Tag: sustainability

World Water Day: How can research and technology reduce water use in agriculture?

Posted on by janet.crompton
Record breaking temperatures in 2018 led to drought in many European countries. Image credit Wikimedia Domain Mimikry11.

World Water Day draws attention to the global water crisis and addresses why so many people are being left behind when it comes to having access to safe water. The UN estimates that globally 80% of people who have to use unsafe and unprotected water sources live in rural areas. This can leave households, schools, workplaces and farms struggling to survive. On farms water is vital for the production of food and is used in a huge range of processes, including irrigation and watering livestock. In this blogpost I will lightly review the current issues around water in agriculture and highlight some exciting research projects that may offer potential solutions.

What is the water crisis?

The UN Sustainable Development Goal 6 is to ensure that all people have access to sustainable, safe water by 2030. Unfortunately, we’re a long way off achieving this goal as a recent report from UNICEF/WHO estimates that there are currently 2.1 billion people living without access to safe water in their homes and workplaces. Another report estimates that 71% of the global population experiences severe water scarcity during at least one month of the year. In recent years we have seen water risks increase, with severe droughts in Africa, China, Europe, India and the US. In sub-Saharan Africa, the number of record breaking dry months increased by 50% from 1980 to 2013. Unfortunately droughts, floods and rising sea levels are predicted to continue and become more unpredictable under climate change scenario models and as the global population continues to grow, there will be increasing demands on water supplies. Increases in water scarcity are likely to lead to increases in political and economic instability, conflict and migration.

Why is water important to agriculture?

In agriculture, water is vital for growing crops and sustaining livestock. Farmers use water to irrigate, apply pesticides and fertilizer and protect from heat and frost. This heavy reliance means that when water supplies run out, farmers are unable to effectively maintain their crops and livestock, leading to food insecurity. Drought stress can result in yield losses of 64% in rice, 50% in chickpea, 18 – 32% in potato. Drought has particularly devastating effects in tropical and sub-tropical regions, where climate change is predicted to have the biggest impact.

The amount of water it takes to produce food and drink products is pretty shocking. Beef production in particular is associated with high levels of water usage. It is estimated that the global average water footprint of a 150g beef burger is 2350 litres; despite producing just 5% of the world’s food calories, beef production is reported to create 40% of the water scarcity burden. Although there are big variations in the environmental impacts of beef farming, with grassland fed, rotational systems being less intensive than grain fed herds on deforested land.

Where does water used for agriculture come from?

The water that is used in agriculture comes from a range of sources, including surface and ground water supplies, rivers and streams, open canals, ponds, reservoirs and municipal systems. Globally, the FAO estimates that agriculture accounts for 70% of freshwater withdrawals, which is predominately used for irrigation. In many areas the high level of groundwater used for irrigation is unsustainable, leading to depletion. For instance, the OECD estimates that groundwater supplies 60% of India’s agricultural water needs but groundwater sources are suffering from depletion and pollution in 60% of states. A big problem is that irrigation is often highly inefficient; in the US the FAO estimates that the amount of irrigated water that is actually used by plants is only 56%. Large amounts of energy are also needed to withdraw, treat and supply agricultural water, leading to significant greenhouse gas (GHG) emissions.

What happens to agricultural water after use?

As well as depleting freshwater supplies, agriculture can also pollute them, with runoff containing large quantities of nutrients, antibiotics, growth hormones and other chemicals. This in turn has big affects on human health through contamination of surface and ground water with heavy metals, nitrate and pathogens and in the environment; it can cause algal blooms, dead zones and acidification of waterways. Combined these issues mean that better management of water in agriculture has huge potential for improving sustainability, climate resilience and food security, whilst reducing emissions and pollution.

What are the potential solutions?

Thankfully there are many innovative projects that are working to improve issues around water in agriculture. Below are a few examples that I find particularly promising.

How can technology help?

To reduce water wastage on farms, agri-technology is being developed whereby multiple wireless sensors detect soil moisture and evapotranspiration. The sensors feed this information to a cloud-based system that automatically determines precisely how much water to use in different parts of the field, leading to increased yields and saving water. Farmers can get water management recommendations via a smartphone app and the information automatically instructs irrigation systems. At a larger scale, these data systems can feed into a regional crop water demand model to inform decision-making on agricultural policies and management practices, and to provide early warnings of potential flood and drought risks.

Sensor that detects leaf moisture levels. Image credit: Wikimedia Domain Massimiliano Lincetto

Irrigation systems are also being made more efficient; one study found that simply changing from surface sprinklers to drip irrigation that applies water directly to plant roots through low-pressure piping, reduced non-beneficial water wastage by 76%, while maintaining yield production. In arid areas these systems can be used for a technique called partial root drying, whereby water is supplied to alternate side of the roots, the water stressed side then sends signals to close stomatal pores which reduces water lost through evapotranspiration.

These efficient precision irrigation systems are becoming cheaper and easier for farmers to use. However in tropical and sub-tropical areas, the technology can be difficult to apply smallholder farming, where there is often insufficient Internet connectivity, expertise, capital investment, and supply of energy and water. Several precision agriculture projects are working to overcome these challenges to promote efficient use of irrigation water, including in the semi-arid Pavagada region of India, the Gash Delta region of Sudan and São Paulo, Brazil. In Nepal, a Water Resources Information System has been established that collects data to inform river management, whereas in Bangladesh hundreds of solar-fuelled irrigation pumps have been installed that simultaneously reduce reliance on fossil fuels and reduce GHG emissions.

Hydroponic systems whereby plants are grown in water containing nutrients are becoming increasingly popular; the global market for hydroponics is projected to reach £325 million by 2020. Compared with land-based agriculture, hydroponics uses less land; causes less pollution and soil erosion and so these systems are less vulnerable to climate change. Critically they also reduce water use; once the initial water requirements are met, the closed-system recycles water and there is less evapotranspiration. The adoption of these systems is predicted to occur predominately in water stressed regions of the Middle East and Africa and in highly urbanised countries such as Israel, Japan and the Netherlands.

How can researching traditional approaches help?

It’s not just about agri-tech; there are relatively simple, traditional ways to tackle water issues in agriculture. To protect against drought, farmers can harvest and store rainwater during heavy downpours by building ponds and storage reservoirs. To reduce water wastage, farmers can improve the ability of soil to absorb and hold water through reducing tillage and using rotational livestock grazing, compost, mulch and cover crops. Wetlands, grasslands and riparian buffers can be managed to protect against floods, prevent waterlogging of crops and improve water quality. Increasingly these traditional methods valued and research is being done to optimise them. For instance a novel forage grass hybrid has been developed that is more resilient to water stress and can reduce runoff by 43 – 51% compared with conventional grass cultivars.

A small-scale farmer in Kenya who is harvest rainwater. Image credit: Wikimedia Domain Timothy Mburu.

How can crop and livestock breeding help?

In the past, crop and livestock varieties have been selected for high productivity. However, these varieties are often severely affected by changes in climate and extreme weather events such as drought and require high levels of water and nutrients. To improve resilience and sustainability, breeders increasingly need to also select for stress responses and resource use efficiency. In crops, drought resilience and water use efficiency is influenced by many traits, including root and shoot architecture, stomatal density and thickness of the waxy cuticle that covers leaves and reduces evapotranspiration. The complexity of these traits makes breeding crops for drought resilience challenging, as many different groups of genes need to be selected for. To deal with this, the International Rice Research Institute’s Green Super Rice project has been crossing high-yielding parent lines with hundreds of diverse varieties to produce new high-yielding varieties that require less water, fertilisers and pesticides. These varieties are now being delivered to farmers in countries across Asia and Africa. Similarly, climate change resilience is also vital for current and future livestock farming. Projects run by Professor Eileen Wall (SRUC) have identified novel traits and genes associated with drought and heat resilience in UK and African dairy cattle, which can be incorporated into breeding programmes.

What are the incentives?

Although these projects might sound promising, without incentives to drive their uptake it may take a long time for real impacts to come to fruition. Unfortunately, in some countries such as India there can be a lack of monetary incentives that would effectively enable farmers to take up new water management technology and practices. In the EU, the Common Agricultural Policy (CAP) has allocated funds to support farmers in complying with ‘greening rules’ that improve sustainability, preserve ecosystems and efficient use of natural resources, including water. Farmers across the EU receive CAP payments for environmentally friendly farming practices, such as crop diversification and maintaining permanent grassland.

In many European countries, there is increasing consumer demand for sustainably farmed food products. This is driving large and small manufacturers to seek out sustainable suppliers and so farmers are incentivised to improve the sustainability of their farming practices so that they can be certified.  For instance the Sustainable Farming Assurance Programme requires farmers to follow good agricultural and environmental protection practices, including sustainable water use. In the coming years, more food products are likely to have water foot print labels that provide the consumer with information on the amount of water used during production and processing. This places considerable power in the hands of the consumer and large manufacturers are responding. For instance, by 2020 Kellogg has pledged to buy ten priority ingredients (corn, wheat, rice, potatoes, sugar and cocoa) only from farms that prioritise protecting water supplies, as well as using fertilizers safely, reducing emissions, and improving soil health. And Pepsico has created sustainable agriculture sourcing programmes that aim to help farmers improve water and soil resource management, protect water supplies, minimise emissions and improve soil health.

What can we do?

There are ways to take responsibility for reducing our own water footprints, including reducing meat and animal production consumption, reducing food wastage and buying sustainably farmed products. Finally, we can all get involved with communicating and promoting the importance of water in agriculture so that more people are aware of the issues. Head to the World Water Day website to find out about resources and events that may be happening near you.

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This blog is written by Caboteer Dr Katie Tomlinson, who recently completed her PhD at the University of Bristol on cassava brown streak disease. Katie is now an Innovation and Skills manager at the BBSRC and is running the Sustainable Agriculture Research and Innovation Club. Views presented in this blog are her own. You can follow Katie on Twitter: @KatieTomlinson4.

Dr Katie Tomlinson

 

Collecting silences

Posted on by janet.crompton

‘Noise’ is the Greenhouse gas (GHG) emissions which have resulted from fossil-fuel-powered economic growth which is measured as GDP for particular territories. In Figure 1, ‘noise’ is the area below the green line to the left of the vertical dotted line (historical) and below the blue line to the right of the vertical dotted line (projected). ‘Silence’ is the reduction of fossil-fuel use and the mitigation of carbon emissions. In Figure 1, ‘silence’ is the green shaded area above the blue line and below the dotted blue line to the right of the vertical dotted line.

Figure 1

To ensure that we maintain atmospheric GHG emission concentrations conducive to human habitation and the ecosystems that support us, we need to assign less value to ‘noise’ (burning fossil fuels) and more value to ‘silence’ (GHG emission mitigations). Creating a system which assigns value to ‘silences’ by turning them into investable resources requires an effort sharing mechanism to establish demand and organizational capacity alongside accurate measuring, reporting and verification for supply.

Organizational capacity for supplying ‘silences’ depends on the ability of organizations to create, trade and accumulate GHG emission mitigations. Due to the intangible nature of such ‘silences’, turning GHG emissions mitigations into investable sources requires their assetization as quasi-private goods with well-defined and delineated quasi-property rights. As preservations of the intangible commodity of stable atmospheric GHG concentrations through the reduction of pollution, such rights need to protect investment by ensuring that these private goods are definable, identifiable and capable of assumption by third parties. Such rights also require enforcement and protection against political and regulatory risk.

Commodifying GHG emission mitigations as quasi-private goods by assetizing them with well-defined and delineated quasi-property rights therefore provides the basis for the supply of ‘silences’. Rather than ‘internalising’ the cost of stabilising or reducing atmospheric GHG concentrations, this approach assigns value to GHG emission mitigations. Yet, if we want to avoid climate catastrophe according to the most recent IPCC 1.5C report and the UNDP Emissions Gap Report, GHG emission mitigations also require concretization on the demand-side. There are several examples of GHG emission mitigation and energy demand reduction assetization that can help illustrate how such systems of demand and supply can function.

Similar to GHG emission mitigations, energy demand reductions also represent the reduction of an intangible commodity vis-à-vis a baseline. While stable atmospheric GHG emission levels are the intangible commodity in the case of the former, in the case of the latter the intangible commodity is energy supply which fuels economic growth. Both require the assetization of mitgations/reduction to create ‘tangibility’, which provides the basis for assigning value. To illustrate, energy demand reductions are absent on domestic and corporate accounts and subsequently undervalued vis-à-vis increases in revenues.

Market-based instruments that succeed in setting and enforcing targets and creating systems of demand, however, can create ‘tangibility’. Energy demand reductions, for example, are assetized as white certificates representing equal units of energy savings (negawatts) in white certificate markets. Similarly, demand-side response enables the assetization of short-term shifts in energy (non-)use (flexiwatts) to benefit from flexibility and balancing markets. Carbon emission mitigations are assetized under the Clean Development Mechanism (CDM) as Certified Emissions Reductions (CERs).

Crucially, these examples shift the emphasis from the cost of pollution and the need to ‘internalise’ this cost or from turning pollution into a quasi-private good through Emissions Trading Schemes (ETS) towards the positive pricing of energy demand reductions and carbon emission mitigations. Positive pricing turns their respective reduction and mitigation itself into a quasi-private good by turning ‘silences’ into investable resources.

The main technical difficulty of establishing such systems lies in the definition of baselines and measuring, reporting and verification vis-à-vis these baselines. The difficulties inherent in this approach are well documented but improved sensing technology, such as the Internet of Things (IoT), and distributed ledgers promise greatly improved granularity and automated time-stamping of all aspects of energy (non-)use at sub-second intervals. If structures of demand are clearly identified through target-driven market-based instruments and supply is facilitated through the assetization of ‘silences’ as quasi-private goods with clearly defined and enforced quasi-property rights, a clear incentive also exists to ensure that MRV structures are improved accordingly.

Key to the implementation of such target-driven market-based instruments are mechanisms to ensure that efforts are shared among organisations, sectors or countries, depending on the scale of implementation. Arguably, one of the reasons why the CDM failed in many aspects was because of the difficulty of proving additionality. This concept was supposed to ensure that only projects that could prove their viability based on the availability of funds derived from the supply, trade and accumulation of CERs would be eligible for CDM registration.

The difficulty of proving additionally increases cost and complexity. To ensure that new mechanisms no longer require this distinction, a dynamic attribution of efforts is required. A mechanism to dynamically share efforts can also help address rebound effects inherent in energy efficiency and energy demand reduction efforts. Key is the target-driven nature of associated market-based instruments and the equitable distribution of the rebound through a dynamic mechanism which shares any rebounds (i.e. increases in carbon emissions) equitably among organisations, sectors or countries. With an appropriate effort-sharing mechanism in place, the demand and supply of ‘silences’ can be aligned with targets aiming to maintain atmospheric GHG emission concentrations in line with levels conducive to human habitation and the ecosystems that support us.

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This blog is written by Cabot Institute member Dr Colin Nolden, a Vice Chancellor’s Fellow in sustainable city business models. The blog has been reposted with kind permission of World Sustainable Energy Days. If you would like to read more on this topic, you can read Colin’s research paper here.

Colin Nolden

 

Systems thinking: 5 ways to be a more sustainable university

Posted on by janet.crompton
As part of Green Great Britain Week, supported by BEIS, we are posting a series of blogs throughout the week highlighting what work is going on at the University of Bristol’s Cabot Institute for the Environment to help provide up to date climate science, technology and solutions for government and industry.  We will also be highlighting some of the big sustainability actions happening across the University and local community in order to do our part to mitigate the negative effects of global warming. Today our blog will look at ‘Considering the actions businesses can take on climate change’.

Our University is justly famous for the breadth and depth of its work on Sustainability. This ranges from research on the effect of micro plastics on the oceans, through food and farming, to the effect of resource-driven migration. We are also tackling arguably the biggest problem of all: developing the tools and techniques that will help us to fight climate change.

Our Sustainability Policy is clear that we need to walk the talk and demonstrate that we are supporting a sustainable world in our operations and strategies.

The University of Bristol’s Sustainability team co-ordinates sustainability activity across the organisation, continually innovating to find ways of reducing our environmental impact against a backdrop of growing staff and student numbers, increasingly bespoke teaching and ever more complex research requirements. The team has particular responsibility for waste resource management, energy, water and transport, and engages with staff and students in many different ways through community engagement, biodiversity activities, sustainable food and sustainable procurement.

1. A changing landscape

The team is led by Martin Wiles, who has been with the University since 2001. “Innovation is at the heart of what we do,” says Martin. “Everyone in the sector knows that the fundamentals are changing, and that change is accelerating. It’s difficult to see what the pedagogical, economic or political landscape is going to be even a year ahead. So, we see our activities as being guided by three principles: how do we support excellence in teaching, research and the staff and student experience? How do we reduce resource use whilst saving money? How do we ensure that we are compliant with increasingly complex environmental legislation? We also feel that we have a role in distilling our findings and disseminating good practice to the wider sector.”

2. Sustainable Laboratories

A good example of how this thinking is applied in practice is the Sustainable Labs Initiative, which focuses on improving the safety, sustainability and success of our laboratories. Energy manager Chris Jones says, “We had known for a long time that our highly-serviced labs represent only 5% of our floor area but use 40% of our energy. In recent years, controls for air handling have improved immensely and we have started to roll out best practice, starting with our Synthetic Chemistry building. We have been able to reduce electricity consumption by 30% there whilst still delivering the same level of service.” The project has been implemented by Chris, working with Anna Lewis, the Team’s Sustainable Labs officer.  A former Research Technician herself, Anna works closely with academic and research staff to minimise resource use by better management. “Staff understand the issues,” says Anna, “and they are very happy to help. We can usually achieve better environmental performance and better safety through relatively small changes to our way of working.”

3. Closing the loop on waste

This sentiment is echoed by Rose Rooney, the Environmental Management System (EMS) and Circular Economy Manager. “If we treat everything in isolation, the task of compliance becomes unnecessarily expensive and intrusive in people’s work. Adhering to the EMS processes saves time and aids compliance. A good example is waste. If we are informed early and fully that a consignment of waste needs to be removed, we can deal with it cheaply and easily, often finding a route for it to be reused or recycled. We are moving away from the idea of waste to becoming a circular economy, where the output from one process becomes the input for another.”  She cites the University’s popular and successful Re-store programme, which allows furniture and equipment from one group to be used by another, and The Bristol Big Give, where students’ unwanted items that would normally go to waste at the end of term are collected and sent to be sold for charities. Many tonnes of items are now being reused that might otherwise have gone to landfill.

4. Be The Change

Bristol Big Give is just one example of a number of behaviour change initiatives delivered by the team to encourage the sustainable behaviours as part of work, study and home life. Maev Moran, Communications and Campaigns Assistant, oversees the delivery of these initiatives: “We have found that audiences respond more positively and proactively to messages of empowerment than to negative messages.  Be The Change, a scheme we launched in June, has quickly become the most popular ongoing initiative among University staff. It covers all areas of sustainability while making rewarding everyday actions, creating a step-by-step guide towards reducing our environmental impact both at home and in the workplace. The breadth of the scheme also means we can factor wellbeing in to our ability to have a positive impact, particularly as part of a wider community.”

5. Travel and transport

Amy Heritage is responsible for Transport at the University, including managing the University’s travel plan, facilities for people who walk or cycle to work or study, the University’s bus services (Bristol Unibus), including the new U2 bus service to Langford and initiatives/incentives to encourage behaviour change on all other modes of travel. “Our Staff and students are great at making sustainable travel choices. Our job is to make this as easy as possible.” She says that our travel plan is a key part in ensuring we are acknowledged as a good corporate citizen, and her team is looking at ways of improving the management of University vehicles and making it more attractive to replace meetings that would otherwise have required flights with video conferences.

Future plans

The team are starting the new academic year with plans for plans for efficiency savings on heating, laboratory ventilation and lighting, making sure we are compliant with new legislation, and collaborative work with Computer Science staff on how the operation of building services translates to staff and student wellbeing. There are plans for more renewable energy generation, smart controls for buildings, and adding to our electric vehicle fleet. “Once more, it’s a project about reducing our environmental impact while freeing up resources for excellent teaching and research, and staff and student wellbeing,” says Martin Wiles, “and that’s what we’re here to do.”

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This blog is written by John Brenton, Sustainability Manager in the University of Bristol’s Sustainability Team.

Read other blogs in this Green Great Britain Week series:
1. Just the tip of the iceberg: Climate research at the Bristol Glaciology Centre
2. Monitoring greenhouse gas emissions: Now more important than ever?
3. Digital future of renewable energy
4. The new carbon economy – transforming waste into a resource
5. Systems thinking: 5 ways to be a more sustainable university
6. Local students + local communities = action on the local environment

Bristol Future’s magical places: Sustainability through the eyes of the community

Posted on by janet.crompton
Silba Island. Credit Wikimedia Commons.

“What is science? Why do we do it?”. I ask these questions to my students a lot, in fact, I spend a lot of time asking myself the same thing.

And of course, as much as philosophy of science has thankfully graced us with a lot of scholars, academics and researchers who have discussed, and even provided answers to these questions, sometimes, when you are buried under piles of papers, staring at your screen for hours and hours on end, it doesn’t feel very science-y, does it?

As a child I always imagined the scientist constantly surrounded by super cool things like the towers around Nicola Tesla, or Cousteau being surrounded by all those underwater wonders. Reality though, as it often does, may significantly differ from your early life expectations. I should have guessed that Ts and Cs would apply… Because there is nothing magnificent about looking for that one bug in your code that made your entire run plot the earth inside out and upside down, at least not for me.

I know for myself, I spend the biggest part of my day looking at my screen, tilting my head slightly to the right like a puppy and trying to make sense of my figures and results. There are days, the really bad days, where I just ask myself out loud “what is this even?!” or “why am I even doing this?”. Screen never answers by the way; for future reference.

And then, there are other days.

As Bristol Futures has now entered its optional unit development phase, the Sustainable Futures team and myself, had the opportunity to visit an amazing island in Croatia. The island of Silba. The purpose of our visit there was to film three Non-Governmental Organisations (NGOs) that are working on launching an amazing initiative: project S.I.L.B.A (Sustainability Increases Life Benefits for All). This project is targeting several Sustainable Development Goals (SDGs) such as ‘Ethical Consumption and Production’, ‘Life Under Water’, ‘Life on Land’. The goal of the project is to create a waste free, carbon neutral island.

Our amazing cameraman Tim Osgood and myself arrived there thinking we were going to film the three founders of the three NGOs and be on our way. Little did we know about the amazing innovations and initiatives that were already well in place on the island of Silba. So, we decided to film several of the locals as well.

I don’t know what I expected to hear when I asked the locals if they knew ‘what sustainability and sustainable development was’. I guess I just was not prepared for someone like Mio.
Mio used to work in large ships, he used to work the radio. Of course, as technology developed his work wasn’t needed anymore, so he decided to go back to Silba and become a shepherd. For twenty years he has been raising goats and sheep, makes cheese (even vegan cheese from figs!) and sells it all over the world. He also makes and sells honey and olive oil; “sometimes” as he said, when the olive trees have behaved.

We are about to begin the interview; he explains to me that he hasn’t had any alcohol for the last 20 years, but he must smoke.

“Do you know what sustainable development is?”. That was my first question. In retrospect it was probably a very uninformed question.

Mio went away and brought me this very elaborate piece of metal and asked me if I knew what it was. Of course, I didn’t. He explained to me it was a device that helped him stabilize his saw while he would cut the very dry olive tree wood that he needed. All the materials he used for it he had found thrown away in different parts of the island, “this is what sustainable development is” he said.
Quite frankly, I was shocked; and a bit embarrassed.

I come from the Balkans myself. I’ve only lived in the UK and been in academia for 3 years! So how did I forget that of course the communities know what sustainable is? Of course the locals are very aware of all things sustainable, perhaps even more so than someone like myself that now deals these issues from a more theoretical point of view?

It’s funny, well not haha funny, but it is genuinely interesting how once you start dealing with a subject, an issue, a challenge theoretically, how fast and how subtly you can lose contact with what is actually happening out there.

And even the word ‘sustainability’, with all its complexity and definitions (oh the definitions), frameworks and literature, goals and targets, had perhaps slightly lost its meaning until Mio picked up that pile of metals and showed it to me. That’s what it was. Right there. Tangible if slightly scruffy looking.

He either read my face or my mind, so he started talking again and saved me from my own thoughts.
He explained to me the big issues the community of the island is dealing with; water shortage, growing numbers of tourists every year, infrastructure and land use.

“Do you think science can help you? Help this island?” I asked him.

And Mio held my hand and explained to me that what he wants from science, and scientists is to help him solve his problems, his real, everyday problems, and then he can solve the problems of his island; “we can do this, we can clean the island, we dealt with worst issues than plastics on our beaches, but first, first we need water all year round”.

So there you have it; that 70 year old shepherd had just defined both sustainability and science. Right there, in a 20-minute interview.

I came back to the UK feeling better. Better about the piles of papers, the effort, the staring at my screen, the bugs in my code and my screen not answering back; it all didn’t seem like such a big problem anymore.

Because that’s it, that’s what we do. We help Mio, help his island. And there is no better feeling than that.

And I guess this is why I am so very much in love with Bristol Futures at the University of Bristol, for giving us the opportunity to explore those issues, those communities, and ourselves.

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This blog is written by Cabot Institute member Eleni Michalopoulou, a Doctor of Philosophy student in the School of Chemistry at the University of Bristol.
Eleni Michalopoulou

Pollination and International Development: How bees can help us fight poverty and feed the world

Posted on by janet.crompton

Animal pollinators are the industrious workers in the factory of life – transporting pollen from one flower to another to ensure successful fertilisation. 75% of our crop plants benefit from this free service which can increase the yield, quality and even shelf-life of their products. This translates to a US$235-577bn value to global agriculture each year. Many of our favourite foods – strawberries, coffee and cocoa – can end up shrivelled and tasteless without pollination. This ecosystem service is under increasing threat however, as pollinators face the potent cocktail of pressures we have laid upon them, declining in numbers across various parts of the world.

But what has all this got to do with international development? From what we can tell, communities in developing countries [1] are more reliant on pollinators than almost anyone, standing to lose important income, livelihoods, nutrition and cultural traditions if pollinators decline. And yet, although a number of researchers across the developing world have made substantial and important contributions to this field, limited resources and capacity have meant that only a small proportion of pollination research has focused on these regions. In fact, there isn’t even enough data to know what is happening to pollinators in the developing world, let alone how we can best conserve them and their values to human wellbeing.

Over two billion people in developing countries are reliant on smallholder farming and therefore indirectly reliant on pollinators, without necessarily knowing it.  Many valuable cash crops, for example coffee, cocoa and cashews, are highly pollinator dependent and almost exclusively grown in the developing world, providing income for millions of people. In fact the reliance on pollinator-dependent crops has increased faster in the developing world than anywhere else. Reliance on beekeeping for income and livelihoods has also increased and is becoming a common component of sustainable development projects worldwide.

Worryingly, declines in pollination will have deeper consequences than just the loss of crop yields and income. Because many of the most nutritionally important food groups such as fruits, nuts and vegetables are also the most pollinator-dependent, pollinator declines are likely to shift the balance of people’s diets away from these foods. As a result, many millions of people around the world, particularly in developing countries, are expected to become deficient in important micronutrients such as vitamin A, vitamin C, iron and folate, resulting in millions of years of healthy life lost.

So what is being done about all this? In recognition of the importance of pollinators to human welfare and the threats facing them, the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) commissioned a global assessment of Pollinators, Pollination and Food Production, published in 2016. This triggered a great wave of political and media attention and has resulted in the incorporation of the report’s key findings into the Convention on Biological Diversity (CBD). Many governments are now in the process of developing national pollinator strategies, including the developing nations of Brazil, Argentina, Colombia, South Africa and India. On this wave of momentum, the CBD has also requested the UN Food and Agriculture Organisation (FAO) to update their International Pollinator Initiative (IPI) which aims to build greater understanding, management and conservation of pollinators around the world. This international attention won’t last forever though, so it is important that the current momentum is sustained and built upon as soon as possible, ensuring as many countries as possible – particularly in the developing world – are involved.

The UK has a valuable opportunity to contribute to these efforts. As a centre of excellence for pollination science, it is the second largest funder and producer of pollination research after the US. But only c.6% of the £95M we have contributed to pollination research in the last 10 years has any link or collaboration with a developing country (ÜberResearch 2018). As more of the UK’s Official Development Assistance budget is made available for research, there is a shift in emphasis towards research that directly contributes towards international development. New funding programmes are encouraging the UK research community to engage in collaborative projects with researchers in developing countries, building valuable research capacity. With the relevance of pollination and agro-ecology to addressing the UN’s Sustainable Development Goals, these topics may fit into this new funding landscape. However, to be effective and ethical, partners and institutions in developing countries must be involved in the design of, and stand to benefit from these collaborations. See here for a UKCDS report outlining the ways in which academics and funders can help ensure fair partnerships.

As populations in the developing world expand, along with per-capita food demands, these issues become all the more pressing. Food production will need to increase by 70% come 2050 and this cannot be achieved by simply expanding agricultural land or fertilizer input. To ensure people are well-fed, in a way that is sustainable and ethical, we will have to intensify our farming in new ways. Understanding and managing pollination may be an important part of this and is something that researchers, politicians, agriculturalists and development workers will need to engage with sooner rather than later.

[1] For simplicity, we use the term ‘developing countries’ to refer to all countries listed in the Organisation for Economic Co-operation and Development’s (OECD) Development Assistant Committee (DAC) list of Official Development Assistance (ODA) recipients. This includes countries from a range of economic classifications, from ‘Least Developed’ to ‘Upper Middle Income’ which includes the nations of China and Brazil. Whilst we group all these nations under the broad term of ‘developing country’, we acknowledge the great heterogeneity between them in terms of wealth, development and research capacity.


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This blog has been kindly reposted from the UK CDS website.  It is written by Cabot Institute member Thomas Timberlake, a pollination ecology PhD researcher from the University of Bristol who undertook a three month project with the UKCDS looking at the relevance of pollination to international development.

Thomas Timberlake

To find out more about this project you can view the full report, or watch a recording of the UKCDS Pollination and International Development Webinar.

You can also listen to Tom speaking on Nature Xposed, a University of Bristol nature radio station, about the importance of pollinators in developing countries.

If you have any comments about this blog do tweet us @cabotinstitute @UKCDS.

Reliable and sustainable micro-hydropower in Nepal

Posted on by janet.crompton
Rolling hills of Baglung District

Despite massive potential to generate electricity through large scale hydropower, Nepal often faces power cuts and the national grid only reaches around 65% of the population. Much of the non-grid connected population live in rural, hilly and mountainous areas where grid extension is difficult and costly. Micro-hydropower plants (MHPs), which deliver up to 100kW of electrical power, extract water from rivers and use it to drive a generator before returning the water to the same river further downstream. These systems can provide electricity for lighting and productive end uses that can vastly improve people’s quality of life. Since the 1970s, micro-hydro turbines have been manufactured in Nepal. Now there are around 2,500 MHPs installed across Nepal.

When these systems break or run poorly it has an adverse effect on the quality of people’s lives. Through my research, I am hoping to find methods to improve the reliability and sustainability of MHPs in Nepal. The aim of this project was to see how well systems were maintained and interview the people who run, manage and rely on hydropower plants. I hoped that interviews would help me to understand some of the technical and social challenges that MHPs face.  Whilst in Nepal, I was working with a Nepali NGO called the People, Energy and Environment Development Association (PEEDA) who helped me to identify sites, arrange visits and conduct interviews.

A micro-hydropower plant

During my time in Nepal, Prem Karki (from PEEDA) and I visited a total of 17 sites in the neighbouring districts of Baglung and Gulmi. Prem and I spent 12 days in the field, making our way from one site to the next via bumpy jeep rides and on foot. Nepal’s hills make it suitable for hydropower but also make travelling complicated. Many of the roads we travelled on were unpaved and we saw lots of places where landslides had damaged roads during the monsoon. This showed us how difficult it is to move equipment and materials when plants are under construction. At each site, our visual assessment took us on some nerve jangling walks along canals that snaked around cliff edges to reach the intakes. Prem was responsible for interviewing the plant operator, management representative and consumer at each site so we could understand how plants were maintained, managed and their importance to beneficiaries. The local people were very helpful and interested by our work. We were often given free meals and sometimes even a place to stay!

A winding canal

I was able to collect a large amount of information which I am still processing digitally and mentally! In general, I found that micro-hydro sites are often impressive feats of engineering which can make a big impact on people’s lives by powering homes, businesses and services. In challenging environments where the only means of transportation is manpower, the hard work of local people has led to their construction. Several times, we crawled through hand chiselled caves made solely for a hydro project’s canal. The impact of the projects was clear to see. Every interview respondent said that connection to an MHP had made their life easier.

Furthermore, the micro-hydro projects are invaluable to communities as a whole; they power workplaces, shops, health posts and mobile phone masts. In the town of Burtibang, with a population of around 10,000, every home and business is powered by electricity from micro-hydro projects.

This dependence on micro-hydropower makes its reliability very important. I found the quality of maintenance very variable. Some sites were well cared for with an evident daily effort to keep the plant running as best as possible. Other plants had little evidence of regular maintenance and were showing signs of deterioration. Promisingly, I found that sites with formally trained operators tended to be better maintained than those without.

In terms of sustainability, there was a good standard of management. Energy meters allowed accurate measurement of electricity consumption so that consumers were charged according to their use. Consumers are typically given a short window in which to pay and fined for late payment. At most sites, managers said that there was sufficient money collected for the operation of the plant and maintenance costs.

To maintain reliability and sustainability, there are a range of technical and social issues that MHPs must overcome. There were common technical issues in design. Many turbines were leaking, and plant operators mentioned bearing replacement as one of the most common issues. We also saw a big variation in the quality of  installations particularly for the  civil works. It is disappointing that despite the massive effort expended in construction, some features are not fit for purpose. Socially, we found four sites where the original operator had moved abroad for work meaning the present operator had not been trained. Plant managers also commented on the increasing demand from consumers resulting in pressure on operators to deliver more power. These issues develop for social reasons but result in problems which can harm the reliability of the system.
A micro-hydropower turbine
In my further research, I intend to work closely with a turbine manufacturer during the design, manufacture and installation of a micro-hydro project. I hope to identify opportunities to implement greater quality control to prevent the occurrence of the technical issues mentioned. By working in collaboration with governmental and non-governmental organisations in Nepal, I would like to find innovative ways to ensure the longevity of MHPs. As Nepal develops, the role of micro-hydro will change but I believe it still has an important role to play in rural electrification.
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This blog is written by Cabot Institute member Joe Butchers, a PhD student from the Electrical Energy Management Group at the University of Bristol.

Joe Butchers

 

 

Finishing my year as a Cabot Institute Masters Research Fellow

Posted on by janet.crompton

In January 2017, I posted my early reflections on sustainability in the UK. Now, 10 months later, I have been living in England for over a year. I submitted my thesis for the MSc Environmental Policy and Management program last month, and I am working for the Environmental Defense Fund in London. This post will have a few parts to it: a recap of my thesis topic, a reflection on my time in Bristol, and a discussion of what I’m doing now and planning for the future.

I titled my thesis “Compensating Environmental Policies’ Victims: Typologies and Recommendations for Success.” By compensation, I mean of those individuals or demographics, companies or industries that environmental protection policy actually hurts. Think coal miners as policy accelerates the transition to clean energy, or low-income households as a carbon tax raises the price of petrol.

Strong environmental policies are wildly important, but often they impart uneven costs, and few (if any) studies discuss compensation for these costs. Reviewing compensation in theory and across ten cases, I developed a typology by which environmental policies’ uneven costs can be classified. I then presented recommendations for compensation, in general and specific to certain typological classifications. Among my general conclusions, I found that fewer, targeted compensatory mechanisms prove more cost-effective and visible than more, broad ones; exemptions dampen policy incentives, hurting environmental performance; and targeted payments or flexible subsidies, financed with related policy revenue, work well. I developed the following chart, which allows a policymaker to trace through certain characteristics of a policy and find a recommended compensatory package.

I won’t drag on through my thesis in this post, but I am happy to share it with anyone wishing to follow up. I was selected to present it at the Oxford Symposium on Population, Migration, and the Environment in December. The Cabot Institute is generously sponsoring my participation, so expect a post from me about the conference soon.

On to my experience of Bristol: the city became a true second home to me. I returned just a few weekends ago for a visit, and the bittersweet wave of nostalgia washed over me. The city is so dynamic, so lively, and so walkable. I arrived on a Friday evening. The sun had set, and Bristol’s abounding student and young adult population pumped through the streets. As I walked up Park Street, two Bristolians struck up a conversation with me. For a few shared minutes fighting Park Street’s incline, we talked about ourselves, the city, our evening plans. Bristol is a city in its offerings—great food, art, culture, parks, but it is a small town in its accessibility. It is walkable, its people are friendly, and it gives you the impression that you can truly get to know it if you spend some time there. I like to think I know Bristol now, and I will continue to miss it immensely now that I’ve gone.

I’m in London in the short term, interning with the Environmental Defense Fund, a US NGO that expanded to the UK/Europe a couple years ago. I focus on methane emission reduction in the oil and gas sector, helping our organisation to develop a strategy that will work in Europe. Methane is the second most abundant greenhouse gas behind carbon dioxide, and it is over 80-times more potent in warming the Earth than carbon dioxide over a 20-year timespan. By some estimates, it accounts for about a quarter of the warming we’ve felt since the pre-industrial age. The oil and gas sector accounts for at least a fifth of Europe’s methane emissions, not accounting for the embodied methane of the bloc’s imports. These emissions come from across the supply chain, from production of a well, storage, and the natural gas distribution networks in our towns. I advocate for stronger methane policy at the EU level, engage with companies to apply pressure, and work with scientific bodies that help to better count and record these emissions. I am learning a lot and making invaluable connections, and I have a fellow Cabot Masters Fellow, Mireille Meneses Campos, to thank. She connected me with the organisation when they were seeking someone for the role.

I will be in London for a couple more months, then I will return to Houston to work with the management consulting firm Oliver Wyman. The firm works in various industries; I will likely work mostly on projects related to energy and electricity, but as a general consultant my project placements may be broader. I am excited for the skills that consulting will help me build, and to be back in Texas for a time. Texas and US environmental protection can only benefit from more supportive voices, and I plan to be loud. I will have been away just a year and a half, but I return with more knowledge and experience to back my advocacy. The Cabot Institute has played a large part in my acquisition of this knowledge and experience, so I am incredibly grateful. I also wish to thank the US-UK Fulbright Program, which brought me to the UK in the first place.
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This blog is written by Michael Donatti in October 2017. Michael is a Cabot Institute Masters Research Fellow.

Michael Donatti

 

More blogs by Michael Donatti:

Global Environmental Change mini-symposium

Posted on by janet.crompton

At the end of June, the Cabot Institute hosted the Global Environmental Change mini-symposium – a one hour whistle-stop tour showcasing the breadth of research within this theme of the Cabot Institute. Speakers represented different schools from the University that actively work on the spectrum of Global Environmental Change challenges, such as environmental law and policy, biodiversity conservation, biogeochemical cycles, environmental justice and environmental history.

 
Each speaker had time for a very short talk, with some choosing to focus on specific aspects of their work in depth and others instead covering the breadth of research carried out by colleagues in their school. The audience too came from a wide background, with everyone from undergraduate and masters students up to professors represented. Although with five speakers (plus some words from the theme leaders, Jo House and Matt Rigby) there was not much time for questions during the hour of talks, there was plenty of time for discussion over food and drinks afterwards.

Although it was billed as a miniature event, it set out to address grand, ambitious, global challenges. It was a short, punchy reminder of the huge range of research skills found within the Cabot Institute. We might not have solved the Earth’s challenges in an hour or two, but now that the dust has settled we certainly have a good idea of who to ask and how to start taking them on. I look forward to the mini-symposiums for the Cabot Institute’s other five research themes!

The speakers were:
Kath Baldock – Life Sciences
Alice Venn – Social Sciences and Law
Alix Dietzel – SPAIS
Kate Hendry – Earth Sciences
Daniel Haines – History

The event was hosted by:
Jo House – Geographical Sciences
Matt Rigby – Chemistry

Blog post by Press Gang member Alan Kennedy.

Sea and Sky

Posted on by janet.crompton

I’ve always loved the sea. Pursuing a major in oceanography led me to chose a degree in Physics and it was I realised that studying the atmosphere was just as, amazing, if not more so! I therefore decided to pursue a PhD in atmospheric sciences. But once the sea captures you, it never really lets you go. That is how I found myself between the sea and sky.


Several years ago, a group of like-minded friends and I decided to start an NGO, based in Croatia, called Deep Blue Explorers that would focus on marine and atmospheric sciences and research. That task proved to be extremely challenging as getting the funding we needed to start our adventures seemed to be a little harder than we had anticipated. However, we were fortunate enough and, after a very rough first season, we started to collaborate with Operation Wallacea who design and implement biodiversity and conservation management research expeditions with university and high school students from all over the world.


At the same time, we started collaborating with another Croatian NGO called 20.000 Leagues who have over 10 years of experience in marine research. Together, we are running the Adriatic Ecology Course that aims to bring together scientists and experts from all over the world to give international students a hands-on experience of field work and high-quality research. The course takes place in the National Park of Mljet and the research includes fish, sea urchin and sea grass surveys. Additionally, the students conduct boat monitoring in Lokva bay, three times a day, in order to record the pressure of
boats anchoring in the Bay.
 

The expedition is supported by scientific lectures regarding conservation in the Adriatic; the ecosystem and biodiversity of the island of Mljet; sustainability; research methods and global challenges such as marine pollution. The students also have the opportunity to be involved in workshops to discuss conservation and global challenges issues and to take part in personal and professional development training activities that focus on sustainability and protection of marine life.
 

It is an amazing experience for everyone and the students leave the Island with a new understanding and new appreciation of the ecology Island of Mljet, the contribution of the National Park regarding conservation and the need and importance of supporting the National Park’s efforts.
 

As for me, being able to work both with the sea and the sky, I can just say, I have never been happier!


Blog post by Eleni Michalopoulou. Eleni is currently a PhD student in the department of Chemistry and part of the ACRG Group. Her PhD focuses on studying the PFCs CF4 and C2F6. A physicist by training with a major in Oceanography, environment and meteorology she has spend most of her early career working on marine conservation, microplastics oceanography and Atmospheric dynamics.  She is one of the lecturers of the Sustainable Development open unit and one of the lead educators for Bristol Futures and the Sustainable Futures pathway. Her scientific interests cover a variety of topics such as climate change, conservation, sustainability, marine and Atmospheric Sciences.

Environments without Borders

Posted on by janet.crompton
The effects of climate change vary hugely across political borders, and have wide-ranging impacts on different communities and environments. Climate policy responses must recognise this global interconnectedness, and integrate international cooperation with effective
local action. This is why global treaties such as the Paris Agreement are so important in the fight against climate change, but individual nations must also do their bit to achieve the objectives set out in the agreement. In Environments without Borders  (part of Research Without
Borders), a panel debate hosted by Bristol Doctoral College and the Cabot Institute on Wednesday 10th May, we will discuss some of these issues, using examples from our research on particular challenges facing our global ocean and water environments.

 

Iceberg photo taken on a research trip to Antarctica, by
Eric Mackie

Rising Sea Levels

Many climate change impacts require a policy response that balances mitigation with adaptation. Mitigation, by reducing global greenhouse gas emissions to achieve a zero-carbon economy, can drastically reduce some of the worst effects of climate change. However, we are already committed to certain climate change impacts, and these will require humanity to adapt. Sea level rise is a prime example. Global sea level has already risen 20cm since 1900, and the rate of sea level rise is increasing. We know this trend will continue throughout the 21st century and beyond, but the question is, how much will sea level rise, and how fast?
Projections of global sea level rise by 2100 range from a further 30cm, assuming drastic mitigation action, to 1m or more in “business-as-usual” scenarios with increasing carbon emissions. Cutting carbon emissions can hugely reduce the number of people at risk of displacement by sea level rise globally, from up to 760 million in a scenario with 4°C of warming, down to 130 million if warming is limited to 2°C in line with the Paris Agreement. Mitigation is therefore essential if we want to avoid the worst effects, but adaptation is also necessary to ensure humanity is resilient to sea level rise that is already locked in.
A coastal scene taken on a research trip in the South
Pacific, by Alice Venn

Disappearing Islands

The South Pacific is home to some of the world’s states most vulnerable to climate change impacts. Sea-level rise threatens coastal erosion, the widespread displacement of people and the inundation of the lowest-lying islands in Tuvalu, Kiribati and the Marshall Islands, while oceanic warming and acidification threaten the livelihoods of many remote coastal communities. More intense tropical cyclones, Cyclone Pam in 2015 and Winston in 2016, have recently resulted in tragic losses of life and damages in excess of $449 million and $470 million respectively. The devastation facing Small Island Developing States in the region, when juxtaposed with their negligible contribution to global greenhouse gas emissions which is estimated at just 0.03%, serves to illustrate the need for the international community to urgently step up efforts to provide support. Enhanced financial assistance for adaptation is essential, however this must be accompanied by strengthened legal protection for communities, readily accessible compensation for loss and damage, capacity building and a strengthened role for civil society organisations giving voice to community needs and traditional knowledge in policy-making processes.
The Lion Fish is an example of an aggressive invasive fish
in the Caribbean Sea, and has had an impact over native species, ecosystems and
local economies.

Invasive Aliens

Biodiversity in water environments can be adversely affected by invasive fish species, which originate from different sources, including marine ballast, fisheries improvements, and aquaculture. Invasive fish species can cause environmental concerns such as changes in the nutrients cycle, transmission of diseases, competence for resources, displacement and extinction of native species. Success in the establishment of invasive species depends on propagule size, physiology of the proper species, and current biotic and abiotic factors in the invaded system. Invasive species represent a global issue, and when combined with climate change their effects can be sharpened. Some limiting abiotic factors are expected to change as the climate changes, favouring new invasions and the spread of established invasive species to new ranges. Milder winters in northern latitude lakes, worldwide flooding and salinisation of coastal freshwater systems will provide suitable thermal conditions, new pathways for escape and dispersion, and the increase in dominance by invasive fish species adapted to brackish water systems. Deficient planning for future responses in water management can also result in favourable conditions for dispersion of undesirable aquatic organisms. For example, this is the case with the Nile tilapia, an invasive species in tropical ecosystems of southern Mexico and Tanzania, where flooding causes its dispersion but alternative management policies could improve the situation. More information see the Invasive Species Specialists Group.


Sustainable Resource Management

Against the backdrop of climate change, which will exacerbate the impact of human activities on natural resources, today’s environmental challenges require above all a strong and consistent commitment by national governments to better implement ambitious environmental policies that they previously adopted. However, traditional decision making approaches often are not equipped to ensure that precious resources are protected, if not enhanced. Sustainable management of natural resources is without doubt complex and creates conflicts between users that compete for access. For instance, there still seems to be too great a divide between the environmental and the business sector and these policy domains are as yet not fully integrated. Nonetheless, there are good examples of governments (and sub-national governments) that were successful in getting all key policy sectors on board when implementing difficult and ambitious environmental policies. For instance, the Scottish Government’s approach in implementing the Water Framework Directive demonstrates that with a strong political commitment, coupled with very proactive efforts in balancing the decision making towards more inclusive and cooperative policy processes, and with an intense and systematic use of evidence to back up policy proposals, it is possible to build trust between sectors and to act upon the barriers to implementation.

It’s clear that each of these challenges requires imminent action, but what are the right approaches, actors, and requirements to make meaningful progress? Whether you’re a member of the public, a policy maker, or someone working in the field, we invite you to join us at the Environments without Borders event on Wednesday 10 May for a lively and provocative debate about the challenges we face and how, collectively, we can spur action for change.
Blog authors (and panel members): Laura De Vito is a postgraduate researcher in the School of Geographical Sciences. Carlos Gracida Juarez is a postgraduate researcher in the School of Biological Sciences. Alice Venn is a postgraduate researcher in the School
of Social Sciences and Law. Erik Mackie is a postgraduate researcher in the School of Geographical Sciences, working together with the British Antarctic Survey, and kept up a blog during his recent fieldwork in Antarctica. Blog originally posted on the Policy Bristol Blog.
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