Tag: food systems

Closing the loop – making food systems circular

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This blog post was written by Kimberly Spirito, intern at SLU Global. It was first published at SIANI, Swedish International Agricultural Network Initiative.

Photo: Igrinz/Pizabay

We have all heard about the idea of creating circular systems and how they could create sustainable societies. But what would it take to transform our current linear systems into circular ones? This question was at the heart of one of the themed panel discussions at the Agri4D conference, which took place 28-30 September 2021.

The online conference brought together researchers, practitioners, policymakers, and an insightful audience to discuss food systems for new realities. The platform Coeo, on which the conference was held, offered the possibility of interacting with people working with sustainable transformation of food systems from all over the world. Panel discussions and presentations of the latest research were held, and the conference moderators brought everything together beautifully through a livestream on stage. It was like we were physically present at a conference, while having the perk of saving CO2 emission from not having to travel. New knowledge was generated, and new connections were made despite the pandemic.

Six topics were discussed during the conference. This blogpost will highlight my experiences and key takeaways from the panel discussions regarding topic 4 on circular food systems.

Rethinking waste management

Today, waste is produced at every step of the process from farm to fork, Matthias Eriksson highlighted that we have come pretty far in reintegrating waste into production chains and recycling it into new products and services. However, we can go further in terms of closing the loop.

What we want and what we see now is that there are a lot of initiatives to make these loops smaller so we can recirculate the waste directly back to the food supply chains and make it more efficient. But the problem is that there is a risk that we might just circulate everything without actually gaining the whole purpose of food, that it should be eaten.”- Matthias Eriksson, SLU 

The second speakers’ presentation continued with addressing the risk that reintegrating food waste into a system might not lead to the generation of more food being eaten. Charity Mashegde and Isheanesu Murwira, two representatives from the organisation Knowledge Exchange Hub, spoke about how they adopt the philosophy of “food is never waste” in their work. They proposed that using the food that could not be sold in markets to cultivate Black Soldier Fly larvae as protein for animal feed, but also as food for human consumption, could be a way of closing the loop and minimizing food waste. Black Soldier Fly larvae have lower environmental impact than other protein sources, and have high fat, protein and mineral content, more iron and zinc than lean meats, as well as more calcium than milk.

Another crucial topic discussed is that a lot of research and innovation in terms of waste management seems focused on the urban-to-urban or rural-to-urban loops. There is a shortage of interest in rural-to-rural circular systems, specifically within sanitation research. There is potential within this topic according to Linus Dagerskog, who presented a resource flow mapping tool for rapid assessment of rural recycling opportunities. It is a participatory tool where the community is involved in generating a waste management system that suits their needs best. This presentation showed the potential for the impact of research when conducted in close collaboration with the people who will benefit from it. A collective takeaway from the conference was that research needs to be conducted in collaboration with other actors and with the people who are to benefit from it.

Recirculating nutrients from waste

The potential of sanitation waste came up several times. PhD Student Aline Paiva Moreira’s talk on Human urine as a fertilizer for sustainable food systems highlighted a lack of diverse research on the topic of linking energy, sanitation, and agriculture. Most research on the topic is conducted in Europe or by European scholars. Aline pointed out that the solutions that fit the European context are not universal. Linking energy, sanitation, and agriculture is a way to create a sustainable circular system, but it needs to be country and context specific for it to be sustainable.

Researcher Chea Eliyan also spoke about the potential for nutrients and energy retrieval from faecal sludge specifically in the case of Phnom Penh. Nitrogen, phosphorus, and energy could be recovered from it. The talks by Aline and Chea highlighted the need for more sustainable sanitation systems and the real potential it could have for closing the loop when combined with agriculture and energy.

More effective use of animal waste within aquaculture was also discussed. According to Da Chau Ti, who spoke about a research project conducted in Vietnam, pond sediments from seafood production could be used as organic fertilizer for vegetable cultivation. Farmers could produce both fish and vegetables, generating food and income security by having multiple sources of income/food sources. There can also be less environmental impact and soil health can be improved over the years when pond sediments are incorporated as a fertilizer.

Circular system initiatives

Food insecurity is a real threat in our reality of climate change. Finding efficient and sustainable ways of producing food will ensure availability of food. Horticulture, hydroponics, and aquaponics present solutions for sustainable circular food production. Researchers Karl Johan Bergstrand and Sammar Khalil from SLU spoke about indoor food production and energy production from food waste and human waste after it’s been through biological treatment. Their research has revealed that bioremediation with fungi, nitrification, and dilution makes it possible to separate nutrients from harmful or unwanted substances within food waste and human waste in a safe way. High contents of Sodium, Chlorine, Ammonium, heavy metals, and micropollutants such as pesticides can be removed with these methods. The nutrients from the waste can then be used in hydroponics, aquaponics, and horticulture.

Another way of creating circular systems, besides recirculating waste into production, is to harness renewable energy. Yasmina Ganse presented how the company Spowdi works with enabling smallholder farmers to transition from fossil fuel to solar-powered irrigation pumps with no running costs. Spowdi is short for “solar-powered water distribution” and their technology is called Spowdi Mobile Pro. The technology helps farmers produce more food with less energy use and less water and thus helps to reduce the CO2 emissions and water consumption.

Many initiatives are trying to transform our current linear systems into circular ones, many targeting food systems. However, they face real challenges. The last speaker Jennifer McConville presented her ideas of how to best overcome these challenges, saying that it is important from the start to have a good understanding of the socio-technical landscape/regime before initiating projects for transformation. The systems we have today are based on linear process design. Implementing circular niches within current linear systems requires involvement from several actors, such as end users, service providers, users of products, politicians and regulators, and other sectors such as the building sector, energy sector and food sector.

If we want niche innovations to lead to circular solutions that work, we need to understand how we can play around with functions such as current functionality of technology, socio-cultural norms, legal and regulatory frameworks, existing skills and capacity, financial arrangements, and institutional arrangements within socio-technical landscapes. It is not enough to only consider the potential utility of a technology.

Food for thought

For me, as a student of Global Studies, the topic of nutrient and energy recovery from waste is not something I have thought about when thinking of circular systems. Hearing about the benefits of linking energy, sanitation, and agriculture was an eyeopener to the potential of food systems and sanitation systems to contribute to sustainability.

Following the panel discussions about circular systems within food systems has really given me food for thought. There are several things I take away from it, but the thoughts I take to heart are “food is never waste” and that implementing circular innovations where linear systems exist requires a comprehensive understanding of the bigger picture. To me, they encompass everything else said during the panel discussions and broadly answer the question of what it would take to transform our linear systems into circular.

To summarise, I quote Sara GrÀslund, head of SLU Global,

“It is important to work from farm to fork, but just as important to work from fork back to farm.”

Read another blog from Agri4D on innovations for food systems transformation.

More connections: Sustainable livestock opportunities and new food system realities

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Shirley Tarawali, assistant director general of the International Livestock Research Institute (ILRI) and chair of the Global Agenda for Sustainable Livestock, made a keynote presentation at an Agri4D online conference, Food Systems for New Realities, held 28–30 Sep 2021. The conference was organized by SLU Global and the Swedish International Agriculture Network Initiative (SIANI), with support from the Swedish International Development Cooperation Agency (Sida). This blog post was first published by ILRI 4 Oct 2021. 

Tarawali’s remarks, ‘More connections: Sustainable livestock opportunities and new food system realities’, pulled examples from the livestock sector to illustrate the importance of existing, new and diverse connections to deliver on the future sustainable, inclusive, resilient and inclusive food systems we all aspire to.

A transcript of her remarks follows.

As I considered the theme of this conference, Food systems for new realities, and the core question it addresses, as I brainstormed with colleagues—and I particularly want to acknowledge ILRI’s Susan MacMillan and David Aronson in this regard—I found myself circling back again and again to the new connections that have arisen recently, and more connections that are needed to address—and to influence—the new realities.

Of course, food connects us all! We all need to eat. We all have preferences. We all like to make choices—especially about food!

But when it comes to food—especially milk, meat and eggs—let’s be careful that the wealthier ones of us don’t allow our choices or the voices about our choices to impact on those who have little or no choice and for whom these foods would make an immense difference to their wellbeing.

There are some connections that relate to this overall theme and which are part of those new realities—new connections that influence and deliver.

Food system connections

  • With ‘more food’ needed to feed ‘more people’, we need to better connect how food is produced, transported, processed, marketed and consumed
  • We need to understand the connections among the many ways that foods are produced and their impacts on the environment
  • We need to understand and address the multiple trade-offs as well as connections involved in making our food systems truly sustainable

For small- and medium-sized livestock enterprises in low- and middle-income countries, where the people–livestock connections are still very close and where demand for milk, meat and eggs is growing fastest, the oft-cited connections now are between livestock and the environment and livestock and human health.

But let’s not forget other connections:

  • Livestock provide livelihoods, jobs and incomes for more than a billion people
  • Women, who in lower-income countries make up two-thirds of all mixed crop-and-livestock farmers, have a unique intersection with livestock
  • Household stock are often the only asset that women can own
  • Farm animals may be the only means for a girl to go to school
  • Cattle, buffaloes, camels, sheep, goats, pigs and poultry and their many products provide women with nutritious food, or, if they sell those foods, with the income needed to buy other foods, to feed their families
  • And germane to today’s topics is livestock’s role in ‘agroecology’ and the ‘circular bioeconomy’ (‘closing the loop’). Because small and medium production enterprises often take the form of integrated crop-livestock systems, they are already operating as a circular bioeconomy, albeit one that needs improved efficiency and productivity. Or these enterprises take the form of pastoral herding systems, which play essential roles in, and present new opportunities for, environmental stewardship of the world’s vast rangelands.

Globally, we have the UNFSS (United Nations Food Systems Summit), COP26 (United Nations Climate Change Conference), N4G (Nutrition for Growth global pledge drive) and CBD (United Nations Convention on Biological Diversity) all being held in just in the last quarter of 2021. These meetings are connecting people, conversations, ideas, commitments and investments.

Pandemic lessons about connections

  • The pandemic has painfully but usefully reminded us just how globally connected we all are. Perhaps Dr Tedros’ pandemic mantra—‘No one is safe until we are all safe’—needs to be expanded to global food systems—‘No one is fed or nourished until we are all fed and nourished’
  • We’ve seen how ‘connected science’ delivered (spectacular) vaccine solutions
  • And we’ve seen how vaccines alone will not suffice; we need similarly focused connections within and among institutions, policymakers, government officials and socio-economists
  • And, of course, the pandemic has underscored the need to understand the connections between people, animals and environments within a ‘One Health’ paradigm

Let me now turn to three connections that still must be established, developed and strengthened—three connections that are themselves interconnected!

Three new food system connections needed

Connections to diversity

  • Reality for each of us depends very much on our local context, which very much differs depending on where and how we live. This is particularly true of livestock, which globally play multiple and very different roles, involve very different species, and are raised to produce a range of commodities in very different environments and under very different circumstances.
  • Because these different realities are often overlooked, debates about the roles of livestock, for example, can get polarized, with contrasting views about whether livestock are part of the solution, or part of the problem, in addressing the new food system realities.

I’m as guilty as anyone of having this kind of polarized (unconnected) viewpoint. Working in the developing world, I have thought that the ‘livelihoods’ livestock provide are more important in poor than in rich countries. I was wrong of course. People in wealthier countries employed in livestock production, processing, trading, retailing, etc. are just as dependent on livestock as the millions raising farm animals in poorer countries. That to me just emphasizes the need for very different pathways to reach a united goal to improve our food systems.

Or think, for example, of the pathways needed in the developing world for a smallholder mixed farmer, or a medium‑sized dairy cooperative member, or a pastoral herder, or a female head of household, or a traditional village elder or a young urban entrepreneur, and think of the many traders and processors of livestock foods and the many people providing feed and veterinary and other inputs and services to livestock farmers. Think of the variety of animal husbandry practices: from massive dairies in China to medium‑sized enterprises raising a few hundred pigs in the emerging economies of Asia, to family farms raising one or two cows and a handful of goats and chickens in Africa. What this huge diversity tells me is that a sustainable development trajectory—and the actions and science needed to drive it—will differ greatly depending on where one starts from, and with what resources.

Connections to science

While global food trends right now are heading in the wrong direction—with increasing numbers of people descending into poverty and hunger—our globalized world has, paradoxically, more new knowledge, more science and innovation, more enabling technologies than ever before.

As the pandemic has shown us, ‘connected science’ can deliver miracles such as rapidly developed vaccines against a new pathogen. But to make a bigger, and more equitable, difference in a diverse world, that science must be connected to, and contextualized within, a broad and diverse set of institutional, policy and social environments.

Connections to investments

We heard last week at the UNFSS of several large financial commitments to realizing the better food systems we aspire to. We must make those financial connections also work for these ‘new realities’, even when those realities are challenging, conflicting, confusing or paradoxical. By connecting people from different worlds, donors from different countries, ideas from different disciplines, innovations from different communities with a wealth of new science and knowledge, we can make the difference that makes the difference.

Let’s connect!

Let’s deliver!

Watch a video of Tarawali’s short (7-minute) talk here: https://youtu.be/QOJlSeY0kxE

What’s cooking at CGIAR?

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Photo credit: UN Sustainable Development Goals

SLU has a long tradition of partnerships with the CGIAR, both at the institutional and individual scientist-level. The CGIAR is the world’s largest agricultural research and innovation network with 8 000 staff globally, focused on agriculture in low and middle income countries.

The CGIAR is currently reorganizing and has launched a new research and innovation strategy with the aim to transform food, land and water systems in a climate crisis. The One CGIAR vision for 2030 is a world with sustainable and resilient food, land and water systems that deliver diverse, healthy, safe, sufficient and affordable diets, and ensure improved livelihoods and greater social equality, within planetary and regional environmental boundaries. Climate change and the climate crisis is at the forefront of the new strategy that describes the food systems challenges in the contexts of six major regions across Africa, Latin America and the Caribbean, South Asia and Southeast Asia and the Pacific.

The strategy targets multiple Sustainable Development Goals (SDGs) and strives to achieve measurable benefits across five Impact Areas: (1) Nutrition, health and food security, (2) Poverty reduction, livelihoods and jobs, (3) Gender equality, youth and social inclusion, (4) Climate adaptation and mitigation, and (5) Environmental health and biodiversity. Three-year investment plans are set up for 2022-2024 and a number of CGIAR Initiatives (research programs) are under development. These initiatives will replace the previous Research Programs (CRPs).

The CGIAR will work with regional and national partners including universities and research institutes, business actors, and international partners. Scientists at SLU together with partners in low- and middle income countries from collaborations in research and capacity development are well positioned to contribute to this work. SLU’s global policy for Agenda 2030 points to several opportunities for cooperation between SLU and the CGIAR to contribute to the SDGs. To facilitate and support the dialogue between scientist at SLU and the CGIAR, a one page capacity statement based on SLU’s policy and the CGIAR strategy is made available here.

For more information, please contact the authors:
Ingrid Öborn, Professor at the Department of Crop Production Ecology, ingrid.oborn@slu.se
Ulf Magnusson, Professor at the Department of Clinical Sciences’, ulf.magnusson@slu.se
Sara GrÀslund, Head of SLU Global, sara.graslund@slu.se