Hosted by Tiffany Knight

Meta-networks of species diversity and community pollination in the Andes of Colombia

The sabbatical is a very valuable opportunity to train myself in statistical analysis on several aspects of my own data of pollination networks in Andean forest. I expect to share with Prof Tiffany Knight and her team during the stay, to discuss about the optimal method to analyze the data and about the interpretation of results. The main goal of the research is to evaluate to what extent local networks in an Andean forest present a metanetwork structure and identify the combination of functional traits of the plant and insect species participating in central interactions (forming the metanetwork core). The expected products of sabbatical are 1) writing a journal article with the working group of Prof Knight about pollination metanetwoks in Andean forest and 2) processing an inter-institutional agreement to facilitate access to research fund calls and mobility of researchers and students among both institutions.

Hosted by Christiane Roscher and Stan Harpole

Investigating the repeatability of global change field experiments

Doing a sabbatical at iDiv would enable me to accomplish several things. First, I would be able to immerse myself in an intellectual environment where colleagues are doing cutting edge ecological and evolutionary biological theory and research. Second, I would create lasting relationships with scientists at iDiv. Third, I would explore ecological research in Germany more broadly and become familiar to long-term field experiments taking place there. Fourth, I would complete a project analyzing the repeatability of field experiments. There is a need to understand the degree to which experimental outcomes are repeatable, but less than 1% of studies in ecology are fully repeated. Using a large database of field experiments, I will study whether same experimental treatments resulted in the same ecological outcomes at 12 sites. Finally, I would spend 4-5 months in Germany with my family, immersing ourselves in the language and culture and enriching our lives.

Hosted by Nadja Rüger, Christian Wirth, Thorsten Wiegand, Jens Kattge

Demographic diversity in forests and their influence on ecosystem functioning

Forest ecosystems harbor amazing amounts of biodiversity and play a major role in the global carbon cycle. Using a combination of mathematical models, simulations, experiments, and observations, my research aims to achieve a mechanistic and predictive understanding of forest dynamics (1-3). Recently, my research group has uncovered simple mechanisms of forest dynamics that may explain consistencies in emergent patterns of tropical and temperate forest dynamics. Through collaborations with Rüger, Wirth, Wiegand, Kattge, and others, at iDiv, I plan to study and test the role that these mechanisms of forest dynamics play in driving differences in dominant plant strategies and their diversity in forests in both tropical and temperate zones. While at iDiv, I am eager to generate new insights into the drivers of diversity in forests, develop collaborations, engage with students through a short theoretical ecology course, and practice the integration of basic and applied sciences of biodiversity.

Hosted by Jonathan Chase

Effect of degradation and heterogeneity on biodiversity of neotropical vascular epiphytes

During my sabbatical  at iDiv, I wish to investigate the influence of habitat loss and deforestation on neotropical epiphytes using a synthetic dataset on vascular epiphytes across Neotropical sites as well as a meta-analytic approach. In the synthetic data study, I will explore the effects of forest degradation and habitat heterogeneity on epiphyte diversity across  spatial scales. In the meta-analysis, I will compile data and investigate the effect of different land uses on vascular epiphyte diversity. Both studies highlight the importance of understanding the impacts of deforestation on epiphytes, which have a strong dependency on atmospheric climate, since it is their main source of water and nutrients. I expect to have many interactions and collaborations within the iDiv community with scientists from all levels, and hope to leverage this time to develop long term partnerships for future studies.

Hosted by Sonja Knapp, Marten Winter, Christine Fürst, Carsten Meyer, Aletta Bonn

The Role of Historical and Contemporary Socioeconomic, Racial, and Cultural Segregation in Structuring the Spatial Distribution of Nature and Biodiversity in Cities

The proposed sabbatical project will address how the social geography of cities, as shaped by historical and contemporary dynamics of culture, race, ethnicity, socioeconomics, and migration, influences the biogeography of nature and biodiversity in cities. This research will advance understanding of urban socio-ecological systems by more deeply integrating social and cultural processes into a global comparative analysis of cities. The project will develop new collaborations with a number of iDiv researchers, produce coauthored articles, and a book for a broader public. More broadly, the sabbatical will help me learn from the expertise and experience of my hosts and other iDiv scholars to both broaden and deepen the scope of my research and the book now in development. In addition to immersing in the scholarly discourse at iDiv, I will offer lectures, courses/workshops, co-organize conference sessions, and develop a Study Abroad course for North Carolina State University and iDiv students.