Warming waters, evolution, and the future for fisheries policy

By Neema Tavakolian, 2021 IIASA Science Communication Fellow 

Young Scientists Summer Program (YSSP) participant Lyndsie Wszola explores how human interactions with warming freshwater systems have affected the evolution of fish species through the lens of the North American walleye. 

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The effects of climate change have intensified over the past few years, especially in our oceans, and human based activities contributing to it are now being taken more seriously. While the warming of our oceans is indeed troubling, many forget that freshwater systems are also being influenced, and that this is affecting the growth and evolution of the species that reside in them.

2021 YSSP participant Lyndsie Wszola wants to explore changes in freshwater systems using human-natural modeling systems at IIASA.

© Lyndsie Wszola

Growing up with a conservation officer father, Wszola is a second-generation conservationist. Knowing she wanted to enter this field at an early age, she realized that she had to get into research and academia first. Her main interests while studying at the University of Nebraska have been the interactions between humans and wildlife.

While researching the relationships between hunters and ring-necked pheasants, she discovered an affinity for quantitative research. This curiosity went even further after she discovered literature on harvest induced evolution and mathematical ecology specifically pertaining to fish populations. Together, this initial desire to explore human and wildlife interactions and her newfound interest in mathematical ecology, led Wszola to take a closer look at North American freshwater systems and how we as humans are influencing its ecology. Her research specifically delves into the growth and evolutionary changes seen in the North American walleye (Sander vitreus) – a popular fish in Canada and the United States. The reason for its fame is its palatable taste as a freshwater fish and its status among anglers, making it both a commercially and recreationally fished species.

Walleye was chosen as the subject of Wszola’s research for many reasons. First, walleye, like many fish, are ectotherms meaning that their body processes and behaviors are directly linked to their body temperature, which is in turn directly linked to the temperature of the water. Unlike other fish however, there is already plenty of research and data on the relationship between the walleye’s growth and temperature. This information makes it much easier to simulate the walleye’s eco-evolutionary growth dynamics in the context of human driven harvests in warming waters. Wszola will also be working with very large datasets spanning multiple latitudes ranging from Ontario, Canada down to Nebraska, USA. The datasets include up to six million fish with four million of those being walleye.

“My goal is to model the influence of temperature on fish harvests based on size. Due to their ectotherm nature, we can observe the changes in body size in annual harvests. As waters warm, walleye grow much faster. We also know that intensely harvested fish often evolve to reach maturation at smaller sizes. When coupled with rising temperatures, this relationship between harvest induced and temperature induced evolution can be fascinating, as we now have two sources working together to change the growth evolution of this fish,” she explains.

Due to warming temperatures, many natural resources are at stake with some of the most sensitive being aquatic in nature. Research like this is important as it allows us to look at our relationships with the environment to be able to react accordingly.

“I hope that the research I do yields fascinating enough results so that from a practical standpoint, future fisheries policies can include climate change dynamics in addition to fish and human dynamics,” Wszola concludes.

Note: This article gives the views of the author, and not the position of the Nexus blog, nor of the International Institute for Applied Systems Analysis.

Why we need basic sciences for sustainable development more than ever

By Michel Spiro, President of the International Union of Pure and Applied Physics (IUPAP) and President of the Steering Committee for the proclamation of the International Year of Basic Sciences for Sustainable Development in 2022 (IYBSSD 2022)

A consortium of international scientific unions and scientific organizations’ plans to declare 2022 the International Year of Basic Sciences for Sustainable Development are underway. Michael Spiro makes the case for why the world needs this now more than at any time in the past.

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For almost a year and a half now, the world has been disrupted by the COVID-19 pandemic caused by the SARS-CoV-2 virus. But how much worse could the situation have been without the progress and results produced for decades, even centuries, by curiosity-driven scientific research?

We deplore the many deaths due to COVID-19, and the future is still very uncertain, especially with the detection of new variants, some of which are spreading more quickly. But how could we have known that the infection was caused by a virus, what this virus looks like and what its genetic sequence and variations are without basic research?

Viruses were discovered at the beginning of the 20th century, thanks to the work of Frederick Twort, Félix d’Hérelle, and many others. The first electron microscope was built in the 1930s by Ernst Ruska and Max Knoll; and DNA sequencing began in the mid-1970s, notably with research by the groups of Frederick Sanger and Walter Gilbert.

Such a list could of course go on and on, with basic research at the root of countless tests, treatments, vaccines, and epidemiological modeling exercises. We even owe high-speed, long-distance communications, which allow us to coordinate the fight against the pandemic and reduce interruptions in education, economic activities, and even the practice of science, to the discovery and study of electromagnetic waves and optic fibers during the 19th century, and the development of algorithms and computers codes during the 20th century. The COVID-19 pandemic is a reminder (so harsh and brutal that we would have preferred to have been spared) of how much we rely on the continuous development of basic sciences for a balanced, sustainable, and inclusive development of the planet.

On many other issues, basic sciences have an important contribution to make to progress towards a sustainable world for all, as outlined in Agenda 2030 and its 17 Sustainable Development Goals, adopted in September 2015 by the United Nations General Assembly. They provide the essential means to address major challenges such as universal access to food, energy, and sanitation. They enable us to understand the impacts of the nearly eight billion people currently living on the planet, on the climate, life on Earth, and on aquatic environments, and to act to limit and reduce these impacts.

Indeed, unlike our use of natural resources, the development of the basic sciences is sustainable par excellence. From generation to generation, it builds up a reservoir of knowledge that subsequent generations can use to apply to the problems they will face, which we may not even know about today.

The International Year of Basic Sciences for Sustainable Development (IYBSSD) will focus on these links between basic sciences and the Sustainable Development Goals. It is proposed to be organized in 2022 by a consortium of international scientific unions and scientific organizations* led by the International Union of Pure and Applied Physics (IIUPAP) with the recommendation of a resolution voted by the UNESCO General Conference during its 40th session in 2019. Over 50 national and international science academies and learned societies and around 30 Nobel Prize laureates and Fields Medalists also support this initiative. The Dominican Republic has agreed to propose a resolution for the promulgation of the IYBSSD during the 76th session of the United Nations General Assembly, beginning in September 2021.

We very much hope that scientists, and all people interested in basic science, will mobilize around the planet and take this opportunity to convince all stakeholders – the general public, teachers, company managers, and policymakers – that through a basic understanding of nature, inclusive (especially by empowering more women) and collaborative well-informed actions will be more effective for the global common interest. As IIASA is one of the consortium’s founding partners, we especially invite all IIASA scientists, alumni, and colleagues they are collaborating with to create or join national IYBSSD 2022 committees to organize events and activities during this international year.

More information, as well as communication material, can be found at www.iybssd2022.org. This will also be shared through social media accounts (look for @iybssd2022 on Facebook, Twitter, LinkedIn and Instagram). You are also invited to subscribe to the Newsletter here.

* Consortium members

The International Union of Crystallography (IUCr); the International Mineralogical Association (IMA); the International Mathematical Union (IMU); the International Union of Biological Sciences (IUBS); the International Union of Geodesy and Geophysics (IUGG); the International Union of Pure and Applied Chemistry (IUPAC); the International Union of History and Philosophy of Science and Technology (IUHPST); the International Union of Materials Research Societies (IUMRS); the International Union for Vacuum Science, Technique, and Applications (IUVSTA); the European Organization for Nuclear Research (CERN); the French Research Institute for Development (IRD); the International Institute for Applied Systems Analysis (IIASA); the European Physical Society (EPS); the Joint Institute for Nuclear Research (JINR); the Nuclear Physics European Collaboration Committee (NuPECC); the International Centre for Theoretical Physics (ICTP); the International Science Council (ISC); Rencontres du Vietnam; the Scientific Committee on Oceanic Research (SCOR); the Square Kilometre Array Organization (SKAO); and  SESAME (Synchrotron-light for Experimental Science and Applications in the Middle East).

Note: This article gives the views of the author, and not the position of the Nexus blog, nor of the International Institute for Applied Systems Analysis.

Enhancing science systems and bouncing forward sustainably from COVID-19

By Husam Ibrahim, International Science Council (ISC)

The IIASA-ISC Consultative Science platform has engaged transdisciplinary global thought leaders to produce four reports that focus on a more sustainable pathway to a post COVID-19 world. This blog post looks at the report on Strengthening Science Systems.

Credit: Adam Islaam – IIASA

Science has spoken reason to power and politics, expanded open science practices, and found a vaccine in record time during this pandemic, yet perceptions of how science has responded overall to the current crisis still vary. There is a broad consensus that there is considerable room for improvement in science systems in the general context of rapidly evolving global exogenous shocks.

“The COVID-19 pandemic is a cautionary tale about the importance and necessity of science: we will face crisis, we know that, and we will best address it through science, but science itself stumbles along and science needs to be more humble, be better educated and not only communicate their knowledge but also communicate the limitation of their knowledge so that science systems can move towards a better frontier.”

– David Kaplan, Senior Research Specialist, ISC 

In 2020, IIASA and the International Science Council (ISC) combined their strengths and expertise to define and design sustainability pathways that will help all levels of global governance be better prepared and more resilient in protecting from future systemic shocks.

In these testing times, policymakers and the general public have looked to science for insight, reliable solutions, and actionable advice. The Strengthening Science Systems report addresses how science systems can be better prepared when an inevitable crisis hits again.

The report puts forward a large number of recommendations, grouped under five interrelated major transformative changes:

Strengthen transdisciplinary research and networking on critical risks and systems resilience

As seen with the COVID-19 pandemic, risks can spread globally regardless of their origin. It is in the interests of all countries to work together and provide support to one another. Most notably, developed countries need to help further strengthen scientific capacities with financial support, technology support and technology transfer for developing countries.

On the other hand, while risks may be global, the manner in which they play out and particularly the way in which different societies respond, show considerable variation. Local scientific capacity has the ability to address the local context and develop effective strategies to address risk. This will allow local scientists to put knowledge on disaster risks at the core of disaster risk reduction policies.

Enhance communication of scientific knowledge, public understanding, and trust in science

Trust in science and in the recommendations emanating from scientists are key to the effectiveness of science-based policies. This is especially important as science denial and misinformation have increased during the pandemic. Communication, transparency, and broad public understanding of how science works are three foundations which will enhance trust in science.

Scientists themselves should therefore be incentivized to play a more active role in combating misinformation in their fields, as they are best equipped with the facts. Alongside that, easily accessible sources of scientific results that are simpler for a mass audience to understand should be created in a wider array of languages.

Enhance knowledge diffusion within the science system

Peer-review systems have been shown to be somewhat inadequate in the face of the COVID-19 pandemic. Peer-review systems need to be more agile, international, rigorous, and inclusive in terms of access and avoiding bias if science is to meet the challenges of future crises.

International organizations of science, including the ISC and UNESCO, can take a lead in devising a more effective system of peer review through dialogue with international disciplinary bodies, national academies, publishers, and national research councils.

Increase the capacity of the science system to respond rapidly to crises with high-quality research

Some countries lack adequate disaster research institutions. These institutes cannot be created in a short period of time and need prior infrastructural efforts, so there needs to be ample support and funding of smaller research institutions in advance of possible disasters. Collaborative efforts between big and small research institutes on a global and local scale are highly recommended. Governments also need researchers who can be on standby and they need to allocate funds that are easy to access during a crisis.

Improve the quality and efficacy of science-policy interfaces at national, regional, and global levels

Science advice has moved to center stage when dealing with policies to respond to the COVID-19 pandemic, which has challenged national science–policy systems. Lessons have been learned about how science can become a more effective input into policy. This involves further international scientific cooperation among institutions engaged in science-policy advice, to enhance the quality of science inputs to policy.

International collaboration allows for sharing of evidence and the emergence of a scientific consensus. This consensus can then be communicated to policymakers who, in turn, need to interact more with the wider academic community to systematically review their country’s policies.

These are some of the conclusions from the five lessons on interrelated transformative changes for the science system cited in the report. They show three axes of improvement that are required to ensure that science can react more efficiently to such exogenous shocks: increased agility, enhanced reliability, and a more effective science-policy-society interface. The main overarching objective is to simultaneously improve all three axes, thereby moving science systems to a new frontier.


Strengthening Science Systems

Read the full report

Read the one-page summary

 

You can also watch the discussion on Strengthening Science Systems as part of the launch event for the Bouncing Forward Sustainably: Pathways to a post-COVID World, which explores the key themes of Sustainable Energy, Governance for Sustainability, Strengthening Science Systems and Resilient Food Systems.

 

This blog post was first published on the website of the International Science Council. Read the original article here.

Note: This article gives the views of the author, and not the position of the Nexus blog, nor of the International Institute for Applied Systems Analysis.

Learning from COVID-19 and upgrading sustainable governance

By Husam Ibrahim, International Science Council (ISC)

The IIASA-ISC Enhancing Governance for Sustainability Report identifies the lessons learnt from the ongoing COVID-19 pandemic in relation to upgrading risk governance.

Credit: Adam Islaam – IIASA

As some governments and their administrations, individuals, and science systems begin to adapt to COVID-19, the struggle still continues in many countries. With that, the world is slowly leveraging the insights this pandemic has offered, standing at the cusp of a new world, which faces multiple stressors and is in need of more resilient governance.

Globally, national governments were put under the microscope. Some, such as Singapore and South Korea, succeeded with evidence-based, swift national leadership coupled with clear crisis communication. This proved useful for containing the spread of the COVID-19 virus and with it brought necessary recovery initiatives. In other countries, such as the United States, tackling the crisis has been characterized by governance challenges, including crisis plans with layers of shared responsibility being ignored in favor of “management by panic” approaches.

The pandemic has highlighted the flaws of neoliberal governance that prioritizes economic growth, deregulation and a separation between people and nature ahead of policies centered around human and ecosystem health and wellbeing.

To this effect, the IIASA-ISC Enhancing Governance for Sustainability Report goes beyond just considering the roles and responsibilities of governments, and adopts a broader definition of governance as, “the totality of actors, rules, conventions, processes, and mechanisms concerned with how relevant…information is collected, analyzed and communicated, and how management decisions are taken”.

In a world confronted with future risks such as spiraling climate change, ecosystem collapse and dwindling resources, global governance needs to be reformed.

The report states that the global community needs to engage in multi-directional and more integrated learning, problem identification and decision making. This should enable the shift towards more sustainable and equitable development in an ever-riskier world.

A disease with no respect for borders requires a collective response, said Volkan Bozkir, President of the United Nations General Assembly, adding that, “COVID-19 is a practice test that exhibits our weaknesses; we must build resilience now for whatever comes tomorrow.”

The pandemic highlighted widespread global fragmentation, which was initially observed through uncoordinated and sometimes competing actions. The report explains that organizations and agencies with similar objectives fought over resources, when instead they should have been bridging their divides and working cooperatively to eliminate competition. In the meantime, as the divide is bridged, special crisis provisions should be established for activation in case urgent action is needed again.

The report also recommends strengthening science–policy interactions to enable evidence-based decision-making, in which science systems collaborate with governments at all governance levels. Global and regional collaboration is especially important given the uneven scientific capabilities across countries and the need to tackle the pandemic everywhere to achieve health outcomes for all.

Working effectively at the interface of science and policy has been a challenge for many countries, which warrants further investigation. However, scientists have tried to step up to the challenges in some unprecedented ways.

For example, online repositories started publishing COVID-19 studies as pre-prints so that their findings could be used by all scientists quickly. As a result, researchers have identified and shared hundreds of viral genome sequences, and several hundreds of clinical trials have been launched, bringing together hospitals and laboratories around the globe.

Mukhisa Kituyi, the Secretary-General of the United Nations Conference on Trade and Development, referred to international scientific collaboration in reference to COVID-19, as the “engine of global science” and said, “It is thus crucial that scientific responses are based on international collaboration that brings together the best minds and available data from different countries for the benefit of all”

Therefore, to reform global governance, evidence-sharing arrangements need to be centered on a global level with reliable evidence, which must be made available swiftly in times of crises. In order for this to happen, the report recommends the creation of specialized advisory bodies that offer consultations on a regular and on-demand basis. The report also suggests involving diverse stakeholder perspectives in these consultations.

Another key point to enhancing sustainable governance is risk reduction management, which should be a fundamental component of decision-making and a part of the investment in sustainable development. The report states that a global socio-ecological resilience and risk dialogue should be launched, engaging policymakers, civil society, the private sector, and the scientific community in mapping risks and their drivers at different scales and discussing their implications for risk governance, prevention and preparedness. Such an engagement process would increase the understanding and communication of the compound, systemic nature of risks driven by infectious diseases, climate change, and other socio-ecological stressors.

“A more holistic approach to risk that better takes into account the many intricate links between nature and people is sorely needed if we are to achieve the Sustainable Development Goals.”

– Anne-Sophie Stevance, ISC

Unifying fragmented global organizations and governance, forming scientific evidence-based policies with the help of science systems, and enhancing levers pertaining to risk management are only some of the recommendations in the report. For more information on upgrading risk governance read the IIASA-ISC Enhancing Governance for Sustainability Report.

You can also watch the discussion on Learning from COVID-19 and upgrading sustainable governance as part of the launch event for the Bouncing Forward Sustainably: Pathways to a post-COVID World initiative, which explores the key themes of Sustainable Energy, Governance for Sustainability, Strengthening Science Systems, and Resilient Food Systems.

 

This blog post was first published on the website of the International Science Council. Read the original article here.

Note: This article gives the views of the author, and not the position of the Nexus blog, nor of the International Institute for Applied Systems Analysis.

How to reverse global wildlife declines by 2050

IIASA researchers Michael Obersteiner, David Leclère, and Piero Visconti discuss the findings of their latest paper, which proposes pathways to reverse the current trend of biodiversity loss and shows that the next 30 years will be pivotal for the Earth’s wildlife.

Species are going extinct at an unprecedented rate. Wildlife populations have fallen by more than two-thirds over the last 50 years, according to a new report from the World Wildlife Fund. The sharpest declines have occurred throughout the world’s rivers and lakes, where freshwater wildlife has plummeted by 84% since 1970 – about 4% per year.

But why should we care? Because the health of nature is intimately linked to the health of humans. The emergence of new infectious diseases like COVID-19 tend to be related to the destruction of forests and wilderness. Healthy ecosystems are the foundation of today’s global economies and societies, and the ones we aspire to build. As more and more species are drawn towards extinction, the very life support systems on which civilization depends are eroded.

Even for hard-nosed observers like the World Economic Forum, biodiversity loss is a disturbing threat with few parallels. Of the nine greatest threats to the world ranked by the organization, six relate to the ongoing destruction of nature.

© Chris Van Lennep | Dreamstime.com

Economic systems and lifestyles which take the world’s generous stocks of natural resources for granted will need to be abandoned, but resisting the catastrophic declines of wildlife that have occurred over the last few decades might seem hopeless. For the first time, we’ve completed a science-based assessment to figure out how to slow and even reverse these trends.

Our new paper in Nature featured the work of 60 coauthors and built on efforts steered by the Intergovernmental Panel on Biodiversity and Ecosystem Services. We considered ambitious targets for rescuing global biodiversity trends and produced pathways for the international community to follow that could allow us to meet these goals.

Bending the curve

The targets of the UN Convention on Biological Diversity call for global trends of terrestrial wildlife to stop declining and start recovering by 2050 or earlier. Changes in how land is used – from pristine forest to cropland or pasture – rank among the greatest threats to biodiversity on land worldwide. So what are the necessary conditions for biodiversity to recover during the 21st century while still supporting growing and affluent human societies?

Two key areas of action stand out from the rest. First, there must be renewed ambition from the world’s governments to establish large-scale conservation areas, placed in the most valuable hotspots for biodiversity worldwide, such as small islands with species found nowhere else. These reserves, in which wildlife will live and roam freely, will need to cover at least 40% of the world’s land surface to help bend the curve from decline to recovery for species and entire ecosystems.

The location of these areas, and how well they are managed, is often more important than how big they are. Habitat restoration and conservation efforts need to be targeted where they are needed most – for species and habitats on the verge of extinction.

The next 30 years will prove pivotal for Earth’s biodiversity. Leclère et al. (2020) © IIASA

Second, we must transform our food systems to produce more on less land. If every farmer on Earth used the best available farming practices, only half of the total area of cropland would be needed to feed the world. There are lots of other inefficiencies that could be ironed out too, by reducing the amount of waste produced during transport and food processing, for example. Society at large can help in this effort by shifting towards healthier and more sustainable diets, and reducing food waste.

This should happen alongside efforts to restore degraded land, such as farmland that’s becoming unproductive as a result of soil erosion, and land that’s no longer needed as agriculture becomes more efficient and diets shift. This could return 8% of the world’s land to nature by 2050. It will be necessary to plan how the remaining land is used, to balance food production and other uses with the conservation of wild spaces.

Without a similar level of ambition for reducing greenhouse gas emissions, climate change will ensure the world’s wildlife fares badly this century. Only a comprehensive set of policy measures that transform our relationship with the land and rapidly scale down pollution can build the necessary momentum. Our report concludes that transformative changes in our food systems and how we plan and use land will have the biggest benefits for biodiversity.

But the benefits wouldn’t end there. While giving back to nature, these measures would simultaneously slow climate change, reduce pressure on water, limit nitrogen pollution in the world’s waterways and boost human health. When the world works together to halt and eventually reverse biodiversity loss, it’s not only wildlife that will thrive.

This article originally appeared on The Conversation. Read the original article here.

Note: This article gives the views of the authors, and not the position of the Nexus blog, nor of the International Institute for Applied Systems Analysis.