Joern Fischer

• PhD
• Professor (Full) at Leuphana University of Lüneburg

Bending the biodiversity curve and delivering on biodiversity promises from international agreements and laws, including Kunming-Montreal and the EU Restoration Law, requires upscaling ecological restoration from smaller to larger spatial and temporal dimensions and across different spheres of society. Achieving this depends on a strong scientific...

Overall patterns of ecosystem services (ES) supplied by a landscape often hide distributional (in)equalities that condition how the benefits from nature are provided and used by people. This is evident in landscapes dominated by private ownership and composed of a mosaic of property sizes, across which ES supply can vary substantially. So far, the...

Ecosystem restoration is widely recognized as a key strategy to address social-ecological challenges. National governments have pledged to restore millions of hectares of land. However, the ability to accomplish these pledges remains opaque, because restoration efforts are influenced by complex social-ecological factors. We provide a global analysi...

Tackling climate change and biodiversity loss will require government policies to reverse environmental destruction and align economic activity with sustainability goals. Subsidy-based policies feature prominently in current national and international policy discussions about ways to address these challenges. Given this, now is a critical moment to...

Human-driven land use change can result in unequitable outcomes in the provision and appropriation of ecosystem services (ES). To better address equity-related effects of land use change in decision-making, analyses of land use and ES changes under different land use management alternatives should incorporate ecological and social information and t...

Notions of regeneration have entered discourses in several fields that are relevant for sustainability, including, among others, ecology, agriculture, economics, management, sociology, psychology and chemistry. A review of existing work shows that there are interesting parallels between these fields. By carefully defining key concepts, such as rege...

The reality for conservation of biodiversity across our planet is that all ecosystems are modified by humans in some way or another. Thus, biodiversity conservation needs to be implemented in multifunctional landscapes. In this paper we use a fascinating coffee-dominated landscape in southwest Ethiopia as our lens to derive general lessons for biod...

As wildlife habitats become increasingly fragmented, sharing landscapes with wildlife is becoming difficult and complex. Because stakeholders with diverging interests struggle to collaborate to manage human-wildlife interactions, new approaches are needed. Here we reflect on a novel participatory learning program we implemented with farmers in comm...

Integrating biodiversity conservation and food production is vital, particularly in the tropics where many landscapes are highly biodiverse, and where people directly depend on local ecosystems services that are linked to woody vegetation. Thus, it is important to understand how woody vegetation and the benefits associated with it could change unde...

Sustainable livestock management plays a crucial role in food production, climate change mitigation, and cultural preservation. Our study aimed to identify and analyse the diversity of social–ecological conditions that characterize extensive livestock systems in southern Patagonia. We integrated data collected from interviews and secondary sources...

Expanding in both scope and scale, ecosystem restoration needs to embrace complex social–ecological dynamics. To help scientists and practitioners navigate ever new demands on restoration, we propose the “social–ecological ladder of restoration ambition” as a conceptual model to approach dynamically shifting social and ecological restoration goals....

Woody vegetation diversity is declining due to human-induced land-use changes, mainly agricultural expansion and intensification, deforestation, forest degradation and urbanisation. This loss challenges the resilience and sustainability of smallholder farming landscapes, in which woody vegetation plays an important role for the provision of multipl...

Continued pressure and transformation of land-use by humans are key drivers of biodiversity and ecosystem services (ES) loss. To determine the sustainability of possible future land-use practices, it is important to anticipate likely future changes to biodiversity and ES. This can help stakeholders and decision-makers to understand and assess the v...

The restoration of degraded ecosystems is considered a key strategy to contribute to ecological integrity and human well‐being. To support restoration practice, 10 “Principles to guide the UN Decade on Ecosystem Restoration 2021–2030” were conceived through a consultative process and put forward by a group of leading international restoration actor...

Addressing ecosystem destruction and unsustainable development requires appropriate frameworks to comprehensively investigate social-ecological systems. Focusing on woody plant management in southwestern Ethiopia, we combined social-ecological resilience and a leverage points perspective to (1) assess how stakeholders perceive and operationalize re...

This editorial reflects on the history of the conservation movement, the strong continuing influence of its colonial past, and the counter‐emergence of a more pluralistic and respectful worldview. Conservation Letters seeks to support and foster an ethical and inclusive discipline of conservation that discards elements of its colonial and racist hi...

Social-ecological ecosystem restoration involves interacting challenges, including climate change, resource overexploitation and political instability. To prepare for these and other emerging threats, we synthesized key restoration and social-ecological systems literature and derived three guiding themes that can help to enhance the adaptive capaci...

Traditional ecological knowledge (TEK) is gaining prominence among ecologists because it can help inform ecosystem management. Yet, sometimes TEK is maintained not because of positive values about the environment, but because of poverty and a lack of options. We discuss this conundrum and present hypotheses for future research.

Context Deforestation, forest degradation and intensification of farming threaten terrestrial biodiversity. As these land-use changes accelerate in many landscapes, especially in the Global South, it is vital to anticipate how future changes might impact specific aspects of biodiversity. Objectives The objectives of this study were to model woody...

Financial advisers recommend a diverse portfolio to respond to market fluctuations across sectors. Similarly, nature has evolved a diverse portfolio of species to maintain ecosystem function amid environmental fluctuations. In urban planning, public health, transport and communications, food production, and other domains, however, this feature ofte...

Many landscapes in sub-Saharan Africa have undergone rapid changes, often with negative social and ecological impacts. Avoiding (or reversing) such negative impacts requires proactive landscape planning. Scenario planning, a participatory approach that generates narratives of plausible landscape change trajectories in the future, has been widely us...

1. Many landscapes in sub-Saharan Africa have undergone rapid changes, often with negative social and ecological impacts. Avoiding (or reversing) such negative impacts requires proactive landscape planning. Scenario planning, a participatory approach that generates narratives of plausible landscape change trajectories in the future, has been widely...

The Programme on Ecosystem Change and Society (PECS) was established in 2011, and is now one of the major international social-ecological systems (SES) research networks. During this time, SES research has undergone a phase of rapid growth and has grown into an influential branch of sustainability science. In this Perspective, we argue that SES res...

Strategies to address the current unsustainable trajectory of our planet require deep transformations. The leverage points perspective can support such efforts for transformative change by motivating more research combining empirical and theoretical frameworks to understand the dynamics of complex social–ecological systems. We argue that the levera...

p>To understand future land use change, and related ecological and social impacts, scenario planning has become increasinglypopular. We demonstrate an approach for translating scenario narratives into spatially explicit land use maps. Starting from fourpreviously developed scenarios of land use change in southwestern Ethiopia we developed a baselin...

Growing global interconnections facilitate inter-regional flows of ecosystem services (ES). Several studies have focused on the opportunities, risks, and governance of telecoupled ES. However, considerable theoretical, methodological, and empirical gaps exist regarding how future demand for ES will shape trajectories of land use change, the bundles...

The population–environment–food nexus is a sustainability challenge for the Global South, and for Africa in particular, where rapid human population growth typically overlaps with high levels of food insecurity and environmental degradation. In this context, it is important to understand the reasons driving high fertility in these regions. Here, we...

Transformation toward a sustainable future requires an earth stewardship approach to shift society from its current goal of increasing material wealth to a vision of sustaining built, natural, human, and social capital—equitably distributed across society, within and among nations. Widespread concern about earth’s current trajectory and support for...

A leverage points perspective recognises different levels of systemic depth, ranging from the relatively shallow levels of parameters and feedbacks to the deeper levels of system design and intent. Analysing a given social-ecological system for its characteristics across these four levels of systemic depth provides a useful diagnostic to better und...

Social-ecological interactions have been shown to generate interrelated and reoccurring sets of ecosystem services, also known as ecosystem service bundles. Given the potential utility of the bundles concept, along with the recent surge in interest it is timely to reflect on the concept, its current use and potential for the future. Based on our ec...

Most assessments of ecosystem services to date are aggregate assessments. Despite their usefulness as a first approximation of how nature is valuable to people, they can obscure important inter- and intragenerational equity issues, which are vital in a policy context, particularly with regard to sustainability. In this conceptual paper, we aim to s...

Context Human disturbances can have large impacts on forest structure and biodiversity, and thereby result in forest degradation, a property difficult to detect by remote sensing. Objectives To investigate spatial variation in anthropogenic disturbances and their effects on forest structure and biodiversity. Methods In 144 plots of 20 × 20 m dist...

Context Human disturbances can have large impacts on forest structure and biodiversity, and thereby result in forest degradation, a property difficult to detect by remote sensing. Objectives To investigate spatial variation in anthro-pogenic disturbances and their effects on forest structure and biodiversity. Methods In 144 plots of 20 9 20 m distr...

Automated decision making and predictive analytics through artificial intelligence, in combination with rapid progress in technologies such as sensor technology and robotics are likely to change the way individuals, communities, governments and private actors perceive and respond to climate and ecological change. Methods based on various forms of a...

The increasing frequency of extreme events, exogenous and endogenous, poses challenges for our societies. The current pandemic is a case in point; but "once-in-a-century" weather events are also becoming more common, leading to erosion, wildfire and even volcanic events that change ecosystems and disturbance regimes, threaten the sustainability of...

1. Relational values recently emerged as a concept to comprehensively understand and communicate the many values of nature. Relational values can be defined as preferences and principles about human–nature relationships and focus both on human–nature connections and well as human–human connections. 2. Here, drawing on 819 face-to-face questionnaire...

We studied food security and biodiversity conservation from a social-ecological perspective in southwestern Ethiopia. Specialist tree, bird, and mammal species required large, undisturbed forest, supporting the notion of ‘land sparing’ for conservation. However, our findings also suggest that forest areas should be embedded within a multifunctional...

Fostering human–wildlife coexistence requires transdisciplinary approaches that integrate multiple sectors, account for complexity and uncertainty, and ensure stakeholder participation. One such approach is participatory scenario planning, but to date, this approach has not been used in human–wildlife contexts. We devised a template for how partici...

Despite concerted efforts, achieving the goal of universal food security remains challenging. Food security interventions occur at different levels of systemic depth. Some interventions target visible supply-side gaps, while others focus on deeper systemic problems in the food system. Here, we used a leverage points perspective to ask how multiple...

Landscape simplification is a worldwide phenomenon that impacts biodiversity in agricultural landscapes. Humans benefit greatly from nature's contributions to people in both material and immaterial ways, yet landscape simplification can undermine these contributions. Landscape simplification can have negative consequences, for example, for human-na...

Ensuring food security while also protecting biodiversity requires a governance system that can address intra- and intersectoral complexity. In this paper, we sought to explore the governance challenges surrounding food security and biodiversity conservation through an empirical study in Jimma zone, southwestern Ethiopia. We used bottom-up snowball...

Ecosystem services are essential to human well-being. Different mechanisms modify people’s access to the benefits from ecosystem services, but who benefits from which services, and the underlying factors that shape such variability, often remain unclear. To address this, we surveyed current and past ecosystem service flows from forest and farmland...

Projections of human population growth for 2050 indicate that Africa is expected to steadily increase its rural population, raising questions on how to best accommodate people while minimizing impacts on biodiversity. We explored the outcomes of scenarios of rural population growth mediated by housing development. We designed our scenarios based on...

Context Human-dominated landscapes in the tropics need to be managed for biodiversity and the maintenance of ecosystem services (ES). Nevertheless, integrating both biodiversity conservation and ES management remains a challenge. Objectives This study aimed to quantify woody plant species diversity and associated ES in farmland and forests, and in...

Living with wild mammals is a critical challenge globally, especially in mixed-use landscapes such as Transfrontier Conservation Areas that aim to conserve wildlife as well as implement programs to improve livelihoods. The success of such initiatives depends on local communities willingness to tolerate potential costs from wildlife. However, the dr...

Many scientists argue that large-scale value changes are needed for a sustainability transformation. New research shows that such changes might be happening.

ContextThe global trend of landscape simplification for industrial agriculture is known to cause losses in biodiversity and ecosystem service diversity. Despite these problems being widely known, status quo trajectories driven by global economic growth and changing diets continue to lead to further landscape simplification.Objectives In this perspe...

and I. Dorresteijn. 2020. Reconciling food security and biodiversity conservation: participatory scenario planning in southwestern Ethiopia. Ecology and Society 25(3):24. ABSTRACT. Social-ecological systems are complex and involve uncertainties emerging from interactions between biophysical and social system components. In the face of growing compl...

Climate change is reshaping the comparative advantage of regions and hence driving migration flows, principally toward urban areas. Migration has multiple benefits and costs in both origin and destination regions. Coordinated policies that recognize how and why people move can reduce future costs and facilitate adaptation to climate change both wit...

The United Nations (UN) recently declared 2021 to 2030 the Decade on Ecosystem Restoration. Against this background, we review recent social-ecological systems research and summarize key themes that could help to improve ecosystem restoration in dynamic social contexts. The themes relate to resilience and adaptability, ecosystem stewardship and nav...

Human–nature connectedness is hailed as a potential remedy for the current sustainability crisis, yet it is also deeply affected by it. Here, we perform a comprehensive assessment of human–nature connectedness that includes material, experiential, cognitive, emotional, and philosophical dimensions. We show that these dimensions of human–nature conn...

The Kavango‐Zambezi Transfrontier Conservation Area supports large‐scale migrations of wildlife that occur in a mixed agri‐conservation landscape in five Southern African countries. Human–Wildlife Conflict is a key challenge and understanding the drivers of communities' willingness to coexist with wildlife is thus critical. Community based natural...

This is the list of papers included in the systematic review by Lozano et al. (2019) published in Biological Conservation: https://doi.org/10.1016/j.biocon.2019.07.002

Knowledge of vegetation dynamics associated with human land‐use change and environmental variables is crucial for sustainable watershed management. The objective of this study was to analyse woody plant diversity in response to the effects of anthropogenic disturbances, and topographic variables in different land‐cover types. Woody plants ≥5 cm dia...

Transformational research frameworks provide understanding and guidance for fostering change towards sustainability. They comprise stages of system understanding, visioning and co-designing intervention strategies to foster change. Guidance and empirical examples for how to facilitate the process of co-designing intervention strategies in real-worl...

Carnivore and humans live in proximity due to carnivore recovery efforts and ongoing human encroachment into carnivore habitats globally. The American West is a region that uniquely exemplifies these human-carnivore dynamics, however, it is unclear how the research community here integrates social and ecological factors to examine human-carnivore r...

Global discourses on the governance of food security span competing approaches. For example, a neoliberal approach advocates commercialized, industrial agriculture, while food sovereignty and resilience are part of an alternative discourse to food security that prioritizes locally-based agroecological food production. Understanding how global disco...

This is the original database of the paper Lozano J, Olszańska A, Morales-Reyes Z, Castro AJ, Malo AF, Moleón M, Sánchez-Zapata JA, Cortés-Avizanda A, von Wehrden H, Dorresteijn I, Kansky R, Fischer J, Martín-López B (2019) Human-carnivore relations: A systematic review. Biological Conservation 237: 480-492. DOI: https://doi.org/10.1016/j.biocon.2...

We investigated how smallholder farming households in southwestern Ethiopia coped with challenges related to lack in capital assets and food shortage. We focused on interactions between capital assets using, in particular, capital asset substitution as an analytical lens to classify and unpack the interactions. The most commonly mentioned challenge...

We conducted a systematic review of 502 articles, published between 2000 and 2016, to characterize the research on human-carnivore relations according to (i) temporal and geographical distribution, (ii) biology, (iii) relations between carnivores and humans, (iv) social actors, (v) drivers of change, (vi) management, and (vii) applied methods. We p...

Understanding emotions is necessary to analyse underlying motivations, values and drivers for behaviours. In landscapes that are rapidly changing, for example, due to land conversion for intensive agriculture, a sense of powerlessness of the inhabitants can be common, which may negatively influence their emotional bond to the landscape they are liv...

Brazil, home to one of the planet’s last great forests, is currently in trade negotiations with its second largest trading partner, the European Union (EU). We urge the EU to seize this critical opportunity to ensure that Brazil protects human rights and the environment. Brazil’s forests, wetlands, and savannas are crucial to a great diversity of I...

In the context of continuing ecosystem degradation and deepening socio-economic inequality, sustainability scientists must question the adequacy of current scholarship and practice. We argue that pre-occupation with external phenomena and collective social structures has led to the neglect of people’s ‘inner worlds’—their emotions, thoughts, identi...

How transformative processes could be facilitated to improve gender equality and consequently, human well-being, is a key question for moving towards a just and sustainable future. Focusing on southwestern Ethiopia where significant changes in formal institutions related to gender have occurred, we applied the concept of systemic leverage points. W...

Tropical forest ecosystems harbor high biodiversity, but they have suffered from ongoing human-induced degradation. We investigated the conservation value of moist evergreen Afromontane forest sites across gradients of site-level disturbance, landscape context and forest history in southwestern Ethiopia. We surveyed woody plants at 108 randomly sel...

1. Drawing on seminal work by the late Donella Meadows, we propose a leverage points perspective as a hitherto under‐recognized heuristic and practical tool for sustainability science. A leverage points perspective focuses on places to intervene in complex systems to bring about transformative change. 2. A leverage points perspective recognizes in...

Households combine capital assets in a process involving human agency and resourcefulness to construct livelihood strategies and generate well-being outcomes. Here, we (1) characterized types of livelihood strategies; (2) determined how different capital assets are associated with different livelihood strategies; and (3) determined how livelihood s...

In this paper, we present an alternative governance system for managing biodiversity in agricultural landscapes. Focusing primarily on the European Union (EU), we start with the premise that there is a need to rethink biodiversity governance to bring together land managers for collaboration and to close mismatches between levels of governance and e...

Many people in less developed countries depend on woody plants, but sustainable management of woody plants often remains a challenge. We assessed people’s use, perceived property rights and management of woody plants in farmland and forests in a landscape of southwestern Ethiopia. We interviewed 180 households and surveyed woody plants in 192 plots...

Traditional farming landscapes harbour high biodiversity worldwide, but are increasingly threatened by agricultural intensification. Here, we aimed to assess the impact of current and potential future land-use intensification on the avifauna in Transylvania, Romania, one of Europe's most notable traditional farming landscapes. We conducted repeated...

Sustainability issues cannot be separated from their social and biophysical context, and collaborative governance responses to interdependent sustainability issues are inherently complex. Governance gaps emerge when responsible actors fail to recognize how multiple issues and actors are interlinked. Closing governance gaps is particularly challengi...

Calls for humanity to ‘reconnect to nature’ have grown increasingly louder from both scholars and civil society. Yet, there is relatively little coherence about what reconnecting to nature means, why it should happen and how it can be achieved. We present a conceptual framework to organise existing literature and direct future research on human–nat...

Transgenic Golden Rice has been hailed as a practical solution to vitamin A deficiency, but has also been heavily criticized. To facilitate a balanced view on this polarized debate, we investigated existing arguments for and against Golden Rice from a sustainability science perspective. In a structured literature review of peer-reviewed publication...