BiodiverCities by 2030(1) is an initiative of the World Economic Forum and the Alexander von Humboldt Biological Resources Research Institute with the Government of Colombia. Together, the organizations gathered a large group of world-renowned experts and professionals from many sectors to use the latest research to improve and have a more inclusive nature-positive urban development. Although there has always been a dichotomy between cities and nature, it is now time to understand and apply nature-positive technologies to urban environments. World statistics show that, by 2030, 60% of the global population will be living in cities (2; 3). The consequences of increasing rural exodus can be positive and negative, ranging from improving lives to exacerbating inequalities and nature degradation. As the world still deals with the COVID-19 pandemic, and the triple planetary crisis of pollution, biodiversity loss, and climate change, it has become increasingly clear how unsustainable our ways of urbanization have been.

In this context, the BiodiverCities by 2030 report states that we must rethink and restructure our cities in a way that rescues nature’s value by bringing harmony and synergy to this dichotomy, and ensuring conservation, sustainability, and health as well as scientific and economic development. In fact, the report finds that investing in nature-based solutions could generate over 59 million jobs in cities around the world and achieve more than $1.5 trillion in annual business value by 2030. One of their key-findings was that the adoption of nature-based solutions is an opportunity that will lead to more resilient and competitive cities.

The report is structured in three main chapters. The first addresses cities’ relationship with nature, covering how the fast expansion of the urban environment has proven to be destructive for the natural environment. They also discuss the importance of cities for the global GDP and  how cities’ impact on nature can also be a critical economic problem, before concluding with a brighter perspective of how the cities of tomorrow can bring healing through nature-positive infrastructure alternatives for urban development. The second covers the economic case for BiodiverCities, advocating further for nature-based urban transformation, showing examples of investment and job opportunities by sector, and how their relevance differs by region. And the third chapter discusses three fundamental systemic shifts towards a nature-positive urban development: urban governance, spatial (re)integration, and investment mobilization. In the end, they conclude with a call for multistakeholder action.

To bring nature forward, respect it, and live in harmony with it should be at the core of our lives and our cities. There, it can only have benefits and growth for the planet, for us, and for future generations. BiodiverCities by 2030 is an incredible initiative with ties to SDG11. Hopefully their message will spread to many nations, improving people’s health and the economy while recognizing planetary boundaries.

The BiodiverCities by 2030 report can be found clicking here. Something to note is that GCE Alumna María Mejía was involved with the BiodiverCities by 2030 Initiative at the National Research Institute of Biodiversity of Colombia. You can read her GCE Alumni interview here.

References

1 BiodiverCities by 2030

2 Destatis – Statistisches Bundesamt (2022)

3 UN Department of Economics and Social Affairs Population Dynamics – World Urbanization Prospects 2018

The post Bringing Nature Forward: The BiodiverCities by 2030 report appeared first on Global Change Ecology.

Why are expectations so high?  

Since Paris, Glasgow is the first conference at which countries must present their updated Nationally Determined Contributions (NDCs), which should include more ambitious emission reductions. So far, only 122 countries have submitted new NDCs. And even with those fresh commitments, the emission gap to reach net-zero greenhouse gas emissions by 2050 stays worryingly large. This means that current commitments are not enough to limit global warming to 1.5°C, as agreed upon in Paris six years ago. To date, 46 countries have not submitted any NDCs at all.  

Many deem COP26 as the very last chance to finally get on track for the big goal of reaching net-zero by 2050. An utterly important milestone to reach this goal is the achievement of a 50% emission reduction until 2030. As the year draws to a close, 2030 is only 9 years away! This is not much time for the vast and systemic changes that must happen.  

Time is running out – this is the main reason COP26 must deliver.  

The Presidency of this year’s COP has identified four main goals which have to be achieved:  

1. This goal sets the scene: As already explained, securing net-zero by 2050 is existential to keeping global warming to 1.5°C and thus of utmost importance. 

2. Mobilising finance: The second most important and probably hottest discussed topic at this year’s conference will be finance. In Copenhagen 2009, wealthy countries committed to providing $100 bn annually from 2020 to 2025 in order to help developing countries finance mitigation and adaptation measures. Countries have fallen short of achieving this goal in 2020. Analyses show that global climate finance flows even need to increase substantially in the coming years.  

3. Adaptation and loss and damage are high on the agenda at this year’s conference. As mitigating climate change will not prevent extreme weather events and long-lasting changes in the earth system from happening, countries and communities need to adapt to the new normal, which will likely be an at least 1.5°C warmer world. Additionally, delegates want to find ways to better support communities, which are so severely affected that adaptation is not enough anymore. This falls under the umbrella of loss and damage, where finally meaningful improvements need to be seen. 

4. All stakeholders, including governments, businesses and the civil society must collaborate and work on solutions together in order to let action follow the promises and tackle the challenge lying ahead. Cooperation is key and indispensable. 

Thanks to our study programme’s support, a group of Global Change Ecology students was selected to participate in this year’s COP. We want to thank our coordination, especially Stephanie Thomas, and our head of course, Carl Beierkuhnlein, for providing this incredible opportunity.  

We will try to share as much of our experiences as possible with you, by posting on our Twitter and Instagram accounts and by publishing more extensive insights here on the GCE blog.  

Feel free to reach out to us in case of any enquiries or questions.  

Week 1 attendees: Kelly Heroux, Christoffer Johansson, Theresa Landwehr, Theresia Romann, Katja Scharrer, Selina Scheer, Sandra Schira, Steffen Schwardmann, Marco Thalhofer, Yun-Yun Tsai, Hannah Weishäupl, Carolin Wicke 

Week 2 attendees: Pia Bradler, Alexis Case, Hannah Pepe, Diana Miriam Pineda Fernández, Veronika Schlosser, Éverton Souza da Silva, Eva Späte, Gabriela Vielma, Ana Letitia Vital, Elena Wiese, Manuela Zindler 

The post Global Change Ecology at COP26 appeared first on Global Change Ecology.

            This summer, I took part in the Potsdam Summer School (PSS). This science school was cooperatively organized by the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), the Helmholtz-Centre Potsdam – GFZ German Research Centre for Geosciences, the Institute for Advanced Sustainability Studies (IASS), the Potsdam Institute for Climate Impact Research (PIK), and the University of Potsdam in partnership with Geo.X and the City of Potsdam. With the Hydrosphere at its core, the eight day long programme covered climate change, the role of the cryosphere, water as a hazard, the interaction between water, land and humans, hydrological modelling, and oceans, as well as economy, management, governance, and stakeholder engagement.

            Virtually united

            This year was the first time that the PSS occurred in an online format due to the restrictions caused by the COVID-19 pandemic. Nevertheless, I have to say that the PSS was a wonderful experience. One could tell that the whole structure of the summer school was carefully planned to provide all the participants with the best experience possible. And they surely succeeded!

            Personally, I was impressed when I logged in for the first on the SCOOCS platform. There, we had the lectures (already available for us two weeks prior to the event!), the weekly schedule, networking tables, participants profile, and study cases. We had to prepare ourselves beforehand by watching the lectures, reading suggested materials, and making our questions for the discussion sessions. The 2021 edition of the school occurred from August 9^th to August 20^th.

            The eight day event kicked-off with a warm welcome from Prof. Dr. Ortwin Renn, scientific director of the IASS. This was followed by an interactive session with Dr. Thomas Bruhn, where we were put in break-out rooms and met our fellow colleagues to talk about ourselves, our backgrounds, and motivations. The afternoon brought a talk by Prof. Dr. Johan Rockström regarding water within planetary boundaries in light of the most recent released IPCC report. We got to have the first meeting of our working groups, to which we were assigned prior to the event.

            I was assigned to the working group about modelling hydrology. Within our working group, we had small lectures which nurtured the discussions in break-out rooms and in the plenary. We also had the opportunity to present our own work related to the study case that we submitted as part of our preparation for the school. This allowed us a place to share our projects, ideas, and different realities, as well as to receive valuable feedback, insights, and suggestions that we could try to implement to further improve our research. At the working groups, we also had the chance to get to know our colleagues further and develop a presentation to be given in the plenary in the last of the school.

            I always was looking forward to the beginning of another day of the summer school. The first moment would always be the welcome and 15-minute interactive session, as well as a moment of reflection within ourselves. After connecting to the others, we began a discussion of the talks. Finally, we joined our working groups. I particularly liked how they structured the programme, the topics covered and how they were presented in light of current research and new technologies. This included bringing awareness to climate change, natural hazards, food-water-energy-ecosystem nexus, international cooperation, and water governance. Another highlight was the importance of the Sustainable Development Goals, how they interact and how they are grounded in four SDGs that are particularly important: SDG 6 (Clean water and sanitation), SDG 13 (Climate action), SDG 14 (Life below water), and SDG 15 (Life on land).

            I feel very grateful for the opportunity to participate in the Potsdam Summer School, for the new knowledge, exchange of information and experience, as well as new insights on current research and even self-discovery. I would like to show my appreciation for everyone that made this summer school possible, and particularly for the organisation team that was always very present, friendly, and helpful. A special shout out to Angela Borowski (IASS) who has always been kind and welcoming to all of us! Thank you!

            There is so much to share about the PSS that a short blog post cannot cover. But you can visit their website (https://potsdam-summer-school.org/ ) and get to know more about the program, the wonderful speakers, and participants of this 2021 PSS Edition. It was a pity that we could not meet in Potsdam for this amazing event, but I myself cannot wait to visit this incredible city! Finally, if you are looking to expand your horizons, have access to current research and networking, I can only recommend this summer school. So, be attentive for the application process that should start in the beginning of next year, good luck, and maybe I will even see you there in 2022(?)!

The post Potsdam Summer School 2021: Water Our Global Common Good appeared first on Global Change Ecology.

In their first-ever collaboration, the IPCC and the IPBES co-sponsored a workshop, bringing 50 climate and biodiversity experts together to study relationships and identify solutions for solving these crises. The result of this meeting was a peer-reviewed workshop report that went live this week! In this blog post, we will discuss some of the workshop’s findings at the intersection of climate, biodiversity, and human society.

Climate-biodiversity-human linkages

How do these factors interplay? Underlying anthropogenic drivers, such as economic production and consumption, give rise to direct impacts like land use change, pollution, and overexploitation of natural systems – all of which contribute to climate change and biodiversity loss. These declines, in turn, can reinforce each other. For instance, climate change effects such as temperature increases, precipitation shifts, or extreme events can cause extinctions and erode ecosystem resilience. Associated biodiversity loss then influences the climate system via changes in nutrient cycling, for example. All of this also gives rise to impacts on human livelihoods and well-being, with consequences to across sectors like public health and food production and security.

Minimal tradeoffs, maximal benefits

Some interventions come with tradeoffs. For instance, a common idea is that the planting of forests stores carbon, thus lowering atmospheric C concentrations and limiting climate change. However, the solution is not quite so simple. Large swaths of monoculture forests can increase the risk of pests and diseases as well as limit productivity and take up space for habitat, damaging biodiversity and ecosystem services. At the same time, solutions exist that can benefit both climate and biodiversity by restoring and protecting carbon- and species-rich ecosystems.

There are ways that we can combine measures in order to both limit tradeoffs and gain benefits. A good example is the use of solar farms to generate clean energy, which is necessary for climate objectives. At the same time, these solar farms use large amounts of land, potentially contributing to the clearing of important habitat. However, by implementing grazing and cropping around panels, we can benefit soil carbon stocks and pollinators, while also providing food (and still gaining clean energy). The integration of climate and biodiversity allow us to support solutions that complement each other by balancing tradeoffs and promoting co-benefits.

Transformative change

It is clear that we need to explicitly consider connections between climate, biodiversity, and people in governance and policy decisions in order to develop the most efficient solutions. However, the report notes that this integration will require transformative change in governance systems and in policies, to support higher levels of intersectoral cooperation and inclusive decision-making as well as to create effective incentives. Ultimately, this coincides with a need for an overall shift in society’s collective values. This can involve, for instance, changing from a focus on “development” defined by ever-increasing economic growth to a focus on just, equitable, and resilient development within planetary boundaries.

For more detailed information on the climate-biodiversity nexus and how this interacts with human well-being, take a look at the full scientific outcome from the workshop!

References:

[1] Pörtner, HO et al. 2021. IPBES-IPCC co-sponsored workshop report on biodiversity and climate change; IPBES and IPCC. DOI:10.5281/zenodo.4782538. Access here, full outcome here.

[2] Images generated by IPCC and IPBES. Access here.

The post Climate and Biodiversity Crises: Two Parts of One Problem appeared first on Global Change Ecology.

Why do we need to talk about the climate?

Covid-19 has shown that we are able to quickly react when our lives are in danger: We highly value human life. With Covid-19, we can see the immediate global impact. Our current actions have an impact on the Earth’s climate system and our future lives. In some regions of Earth, the consequences are drastic while in others the impacts of climate change are not yet apparent. Although already in a climate crisis, it is hard to imagine what future life will be like if we continue as we do. An ambitious climate policy requires a deeply engaged public that supports initiatives that will have an impact on their own behaviour and their lifestyle. Otherwise, if this social mandate is not given and the current governments implement ambitious climate policies, public unrest could be a result and the next government could easily take measures back. So, the public needs to get more engaged but the question is how we can achieve this?

For decades, there has been scientific consensus and we need climate science to assess the state of the Earth’s climate system and other sciences to assess its impact on us. But we do not need more knowledge to “convince” the public to act. We need to reach everyone and get the support by all sectors and all classes. Not everyone is reached through dry facts and scientific language. One way to reach the people you meet every day is by talking about climate change. Here, it is relevant to make sure you know how to successfully talk about this difficult topic. What I mean by “conversations about the climate” is bringing this topic to a more personal level. With the current crisis on top, we need more action, people need to be reminded that climate change needs at least the same attention and political will as Covid-19.

Role of stories and narratives

When communicating about climate change with friends, family or strangers, stories play a pivotal role. By asking more general, open questions like, “What is your experience with climate change?” your conversation partner gets the chance to use their own narrative. This way, you can begin to understand how your dialogue partner perceives climate change and gives you hints on how you can then reply to them.

Psychology

Today, finding solutions often requires interdisciplinary approaches. When we talk about climate change, there is no difference. These communication practices do not just build upon communication research, but research in social sciences and psychology. To be a better communicator, it is necessary to understand some findings of psychosocial research. First and foremost, when someone says something wrong, we sometimes tend to correct them; we want to right a wrong. However, by doing so, we may create a conflict, causing the other person to react defensively. It is not a good way to have a conversation.

Climate change is still a contested topic. Is it because of the way people raise the issue or because it is so difficult to grasp? What do you think is the issue?

Let’s start. Have you talked to a friend, relative, colleague or stranger about climate change before? Do they know your opinion? You can raise the issue by sharing your thoughts and your personal story—why you are personally engaged in climate action or effected by climate change. Are you trying to convince local politicians to implement more ambitious climate change policies because you are afraid of your children’s future? Or, do you want to decarbonize your consumption patterns to become a role model and protect the beauty of nature left to us by our forefathers? Many people have an individual story, but these remain unshared unless you speak out.

Discussing climate change can have surprising effects. You might be surprised that your neighbor is aware of the issue but does not know where to start a personal transformation process such as reducing their carbon footprint. You could team up to support each other. On the other hand, you might provoke a completely different result. Your grandfather or sister is close to you, but it turns out they do not want to change anything. What do you do? Instead of pointing fingers and blaming them, you could first listen. What do they have to say? Let them speak and maybe you can still find some common ground. Even if you do not understand or support their opinion, it is important to remain respectful, and listen; do not try to correct them.

More practical tips to start with. If you are interested in leading conversations about climate change, here are some tips for how to spark a friendly conversation. To avoid ambushing anyone, you can simply ask if your friend is willing to talk about climate change. If the answer is positive, consider starting with an open question that makes clear you are interested in your friend’s story. You want to understand your friend, so just listen and make sure not to interrupt. You will probably learn something new about your friend by just listening.

Climate Outreach, is a British non-profit organization researching better ways of communicating climate change. They have released a handbook on how to talk about climate change. The guide is a result of a citizen science project called #TalkingClimate. For one month, seven-hundred participants from all over the world, including myself, led climate change conversations and filled out a survey about their experiences. Have a look for more guidance and become an activist. Let’s start talking about climate change.

Sources, further reading and videos:

Books:

Adam Corner, Jamie Clarke: Talking Climate: From Research to Practice in Public Engagement

George Marshall: Don’t Even Think About It: Why Our Brains Are Wired to Ignore Climate Change

Talks:

Ted Talk by George Marshall: I have learnt the most about climate change from those who deny it.

Ted Talk by Renée Lertzman: How to turn climate anxiety into action.

The post Do you want to talk about the climate? appeared first on Global Change Ecology.

“This is one of the avalanches returning most frequently at this site”, Walter Gebhard says. He is head of the Wildbach- und Lawinenverbauung Tirol, a section of the ministry for environment and tourism in Austria working on avalanche protection. “There are around 2600 avalanche sites in Tirol, we know that they occur frequently there.” They do not occur every year but in varying intervals of time, depending on the location. “Some have a higher release, others are rarer”, Gebhard says. This year alone, 400-450 avalanches have been documented in the county of Tirol. Avalanches are part of the mountains, the people living there are used to this disturbance. Yet, it is a natural hazard which has to be dealt with. Avalanches often are triggered when high temperatures occur in spring.

In a future not too far away, it is very likely that natural hazards such as avalanches will increase in mountainous areas like the Alps. The reason: global climate change. While the Paris Agreement aims to restrict global temperature rise to 1.5° (or as this is very unlikely to be reached below 2°C), the Alps already face this rise in temperature in some regions. Very likely, these temperature changes will bring some drastic challenges to the Alps. They will seriously impact the lives of people living in that region as well as biodiversity, wildlife and environment in general. Therefore, the Alpine Convention has been founded in 1989 by the neighbouring countries of the Alps (Germany, France, Italy, Liechtenstein, Monaco, Austria, Switzerland and Slovenia) as well as the EU. The Alpine Convention aims to generate sustainable development and protection of the Alps. The Permanent Secretary of the Alpine Convention is in Innsbruck, while the presidency of the Alpine Convention changes every two years.

Squeezing his eyes in the sunlight, Walter Gebhard looks into the clear sky. “Today, we have perfect weather conditions, nobody would expect avalanches when standing in the green areas where the snow has melted.” And yet – they crawl down the mountains like a howling monster, destroying everything that is in their way. In order to protect the people in the Innsbruck area from avalanches coming down the steep mountain chain, various measures are installed.

Firstly, there is a wall of cement which was built in the 1950-60s. Since then it has been renovated and improved several times. Another approach is to release avalanches artificially. Here, small avalanches are triggered helping to avoid big avalanches. “This approach has grown in the past 20 years. It is especially useful for protecting highways and skiing areas”, Gebhard says. This is done via targeted detonations – a huge knowledge base is necessary. “An early release is important. The detonation takes place 1-10 meters above the snow, it is not located directly in the snow”, says Gebhard, looking up the mountain. Over settled areas, the artificial release of avalanches is not allowed as this has caused accidents in the past when avalanches grew bigger than it was expected. Warning and monitoring systems that include the local population and their knowledge are as well a very helpful tool.

Ever since people started to live in the Alps, natural hazards have been part of their life. Due to a changing climate, these hazards are now even more threatening as they are increasing in frequency and becoming less predictable. With extreme events like storms or floods, climate change is putting a heavy weight onto the shoulders of the people living close or in the mountains. If they want to adapt to the new situations and problems, they have to come up with sustainable and adaptable solutions. And it is very likely that they want to adapt – because who would like to see their house buried under trees and snow?

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“In those three days, 245 people have helped us to plant 4719 saplings”, Kun says. The 28-year old GCE student from South Korea had the idea for Klimawald already last year. “I wanted to something on the ground together with my fellow students. To have a good time and plant trees somewhere in Bavaria.” As trees (and plants in general) work as carbon sinks, because they absorb CO2 through their leaves, this would contribute to reducing our carbon footprints. As GCE students travel quite a lot due to conferences, internships and science schools, Klimawald was intended as a compensation measure for this study programme.

He proposed his idea in a project management seminar. First, Nikunj Pathak from India and study colleague of him, wanted to help in the project. “He suggested Bayreuth as a suitable location for this project. Seminar leader Birgit Thies suggested us to have at least one German speaking student in the group as this would make communication with local authorities easier.” At this point, GCE student Theresa Landwehr joined the team for the Klimawald project. Gregor Aas, head of the Ecological-Botanical Garden in Bayreuth (ÖBG) also supported the students with his knowledge.

After various attempts to contact different city departments of Bayreuth, finally the Office for Food, Agriculture and Forestry Bayreuth (AELF Bayreuth) and the City Forestry Bayreuth (Stadtförsterei Bayreuth) showed interest in participating. “Before our first meeting with them, we were not sure how much land we would get. Normally, the landowners use it for timber production and other forestry activities”, Kun, who is originally coming from South Korea, says. The experts from AELF and Stadtförsterei proposed a forested area of one hectare and thousands of saplings. “This was very unexpected, and we were really happy about it. From this point on, there was no way back, we had to do it”, Kun says and laughs. The landowner of the forest area, Hospitalstiftung, agreed with the plans to plant species adapted to climate change.

As a next step, the team had to agree on a date when the Klimawald project should take place. “We had to make sure that students would be back from the semester break. Also, we had to take into account a suitable time for planting. Late April was not ideal, but students were back then”, Kun says. On the site, some older trees got cut down in order to lower competition for the new saplings. “Normally, the most common tree species to be found in this region are pine and spruce. Both species have suffered during the last years due to heat stress, bark beetle outbreaks, storms and droughts”, Kun says. Also, a fence was set up around the site to prevent wildlife from eating the saplings.

When it came to decide which species to plant, the opinions of experts from the city and the county were different from the students’ ones: “They wanted to stay at a scenario with 2°C warming and plant beeches and oaks, which are local native species. But we from the university thought a bit differently, as the average temperature in Bayreuth has already risen by 2°C. Gregor Aas therefore suggested some non-native species which we could merge with the ones proposed by AELF and Stadtförsterei. For example, Turkish hazel and Douglas fir, Turkish and Sicilian firs, and Lebanon cedar as they are more drought tolerant as well as adapted to extreme winters.”

A little smile hushes over Kun’s face as he remembers the workload of the project. “There was so much work involved I hadn’t even thought of. We had to design a website, a logo, organize drinks and food to give to the volunteers. Thankfully, my girlfriend Ahram Chae (Bauhaus-Universität Weimar) joined our team at some point as the designer for the website.” Such projects often bring unexpected turns: During Klimawald, various media teams arrived, interviewing the students – most of all focussing on Theresa as she is the only German speaking team member. “This was really hard for her and we hadn’t thought of this problem before”, Kun says.

In the end, it was worth the effort. People with very different backgrounds and from all age groups participated: high school students, students from various departments of the University of Bayreuth, parents with kids, some professors, parents without their kids. “Even high school students from Bamberg came to plant trees, I heard that the Fridays for Future movement is quite strong there.” Another interesting side fact: around two thirds of the volunteers were women. “This is something, I see often in this field. More women are involved in environmental issues”, Kun says.

What is preoccupying Kun now, one month after the event, is the impact of the planting. “One hectare is nothing.” The forest area in Germany is around 11.4 million hectares and stores 52 million tonnes of CO2 per year. Therefore, the one hectare used for Klimawald accounts for around 4.5 tonnes of stored CO2 annually. Just to compare: Germany emitted 905 million tonnes of CO2 in the year 2017.

“I would like to extend the project, maybe introducing it in other cities, other universities as well”, Kun says. For the next five years, the Klimawald project is going to be continued in Bayreuth. “There will be a planting phase next spring. If it is needed due to droughts, the new trees will be watered once in summer. This is something new in forestry, normally, the plants are let alone.” Probably a “gap filling” is needed in October this year, as the beech saplings were of bad quality and some are likely going to die. This means, that new trees will be planted to replace the dead ones.

Is the result of Klimawald satisfying? Kun thinks for some moments and answers: “My character does not allow me to feel too much self-esteem, but with Klimawald, I was really happy and satisfied. It was a big dream of mine to plant trees for a long time.” His decision to study ecology was inspired when he read a book with the title “The Man Who Planted Trees” by Jean Giono some years ago. “This was something so simple: To plant trees and see change”, he says. And yet, Kun was not satisfied with just leaning over science books, reading through scientific papers and similar aspects of academia. “I started to lose the simplicity of action. Obviously, studying and gaining knowledge is important but I didn’t actually do anything with it yet.” Therefore, Kun decided to plant trees.

The post Klimawald Bayreuth: About planting trees and seeing change appeared first on Global Change Ecology.