A5026151695- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- Plant and animal studies
- Plant Water Relations and Carbon Dynamics
- Remote Sensing in Agriculture
- Botany and Plant Ecology Studies
- Forest ecology and management
- Rangeland and Wildlife Management
- Rangeland Management and Livestock Ecology
- Plant responses to elevated CO2
- Tree-ring climate responses
- Horticultural and Viticultural Research
- Pasture and Agricultural Systems
- Plant Physiology and Cultivation Studies
- Agroforestry and silvopastoral systems
- Wildlife Ecology and Conservation
- Geology and Paleoclimatology Research
- Soil Carbon and Nitrogen Dynamics
- Remote Sensing and LiDAR Applications
- Plant Parasitism and Resistance
- Mediterranean and Iberian flora and fauna
- Climate change and permafrost
- Forest Ecology and Biodiversity Studies
- Bioenergy crop production and management
- Animal and Plant Science Education
German Centre for Integrative Biodiversity Research
2016-2025
Friedrich Schiller University Jena
2016-2025
Institute for Biodiversity
2025
Goethe University Frankfurt
2009-2021
University of Göttingen
2021
Leuphana University of Lüneburg
2020
Jena Bioscience (Germany)
2020
University of Regensburg
2005-2016
Abstract Within the field of species distribution modelling an apparent dichotomy exists between process‐based and correlative approaches, where processes are explicit in former implicit latter. However, these intuitive distinctions can become blurred when comparing approaches more detail. In this review article, we contrast extremes correlative–process spectrum models with respect to core assumptions, model building selection strategies, validation, uncertainties, common errors questions...
Abstract Aim Biotic interactions – within guilds or across trophic levels have widely been ignored in species distribution models (SDMs). This synthesis outlines the development of ‘species interaction models’ (SIDMs), which aim to incorporate multispecies at large spatial extents using matrices. Location Local global. Methods We review recent approaches for extending classical SDMs biotic interactions, and identify some methodological conceptual limitations. To illustrate possible...
Abstract Plant functional traits can predict community assembly and ecosystem functioning are thus widely used in global models of vegetation dynamics land–climate feedbacks. Still, we lack a understanding how land climate affect plant traits. A previous analysis six observed two main axes variation: (1) size variation at the organ level (2) leaf economics balancing persistence against growth potential. The orthogonality these suggests they differently influenced by environmental drivers. We...
Abstract Aim Numerous studies have reported changes in first flowering day (FFD‐changes) response to climate. However, regarding the direction (advances versus delays) and intensity (number of days/decade) FFD‐changes, species show differences even when observed same location. Here, we examine extent which plant traits can explain phenology trees, shrubs, herbs grasses. Location Eighteen sites distributed over Northern Hemisphere. Methods We compiled data from literature on FFD‐changes...
Tree–grass ecosystems are widely distributed. However, their phenology has not yet been fully characterized. The technique of repeated digital photographs for plant monitoring (hereafter referred as PhenoCam) provide opportunities long-term phenology, and extracting phenological transition dates (PTDs, e.g., start the growing season). Here, we aim to evaluate utility near-infrared-enabled PhenoCam structure (i.e., greenness) physiology gross primary productivity—GPP) at four tree–grass...
Phenology has emerged as key indicator of the biological impacts climate change, yet role functional traits constraining variation in herbaceous species' phenology received little attention. Botanical gardens are ideal places which to investigate large numbers species growing under common conditions. We ask whether interspecific plant is influenced by differences traits. recorded onset, end, duration and intensity initial growth, leafing out, leaf senescence, flowering fruiting for 212...
Abstract Arable fields and mesic meadows have been affected by intensifying agricultural management nutrient input during the 20th century, but direct evidence for long‐term impact of intensification on plant contents remains scarce. Non‐destructive novel spectroscopic methods can produce such data from herbarium specimens, making it possible to investigate how leaf traits, especially nitrogen phosphorus, changed over last what role habitat type practices play. We carried out a resurvey...
Dispersal is a process that determines many aspects in the life‐history of plants. Up to now, however, it difficult quantify. Many studies rather assess as categorical trait, i.e. assuming species dispersed by certain vector or not. Gradual differences dispersal potential between are rarely considered. In this paper we focus on key epizoochory: attachment animal coats. We present two simple models (GLMs) how quantify and predict potentials sheep wool cattle hair from easily measurable seed...
Within the past few years plant functional trait analyses have been widely applied to learn more about processes and patterns of ecosystem development in response environmental changes. These approaches are based on assumption that plants with similar ecologically relevant attributes respond changes comparable ways. Several methods described how analyse a priori defined sets respect environment. Irrespective statistical used contrast responses conditions, each approach depends strongly...
Summary 1. Grassland ecosystems are often used to generate biomass in temperate regions of the world. It is well known that influenced by climate and biodiversity, but relative importance these two factors relation management has not been widely studied. To recommend treatments maximizing yields we aim quantify effects species functional diversity on differently managed grasslands. 2. We studied development over last 37 years a grassland site Germany, with mowing at five frequencies (one...
Abstract Question: Which management treatments are suitable to replace historically applied grazing regimes? How and why does vegetation structure change following changes in management? Location: Semi‐natural calcareous dry grasslands southwest Germany. Methods: We analysed floristic functional composition induced by different (grazing, mowing, mulching, succession) long‐term experimental sites. First, distances between the initial conditions years were determined. Second, we used RLQ...
Abstract Leaf senescence is a major event in plant's life history as autumn marks the end of growing season. The optimal timing leaf crucial to both minimise risks low temperature events and maximise carbon gain during As abiotic conditions are currently changing at unprecedented rates, it important study how different species responding these changes order forecast future season length sequestration potentials. In contrast flowering phenology, data on scarce even more so for herbaceous than...
Abstract Aim Theoretical, experimental and observational studies have shown that biodiversity–ecosystem functioning (BEF) relationships are influenced by functional community structure through two mutually non‐exclusive mechanisms: (1) the dominance effect (which relates to traits of dominant species); (2) niche partitioning [which diversity (FD)]. Although both mechanisms been studied in plant communities experiments at small spatial extents, it remains unclear whether evidence from...
Abstract Whereas temporal variability of plant phenology in response to climate change has already been well studied, the spatial is not understood. Given that phenological shifts may affect biotic interactions, there a need investigate how environmental factors relates herbaceous species’ by at same time considering their functional traits predict general and species-specific responses future change. In this project, we analysed records 148 species, which were observed for single year...
Phenological shifts due to changing climate are often highly species and context specific. Land-use practices such as mowing or grazing directly affect the phenology of grassland species, but it is unclear if plants similarly affected by change in differently managed systems meadows pastures. Functional traits have a high potential explain phenological might help understand species-specific land-use-specific responses changes climate. In large-scale field experiment
Abstract Anthropogenic nitrogen (N) deposition and resulting differences in ecosystem N phosphorus (P) ratios are expected to impact photosynthetic capacity, that is, maximum gross primary productivity (GPP max ). However, the interplay between P availability with other critical resources on seasonal dynamics of remains largely unknown. In a Mediterranean tree–grass ecosystem, we established three landscape‐level (24 ha) nutrient addition treatments: (NT), (NPT), control site (CT). We...
Abstract Changes in phenology induced by climate change occur across the globe with important implications for ecosystem functioning and services, species performance trophic interactions. Much of work on phenology, especially leaf out flowering, has been conducted woody plant species. Less is known about responses herbaceous global even though they represent a large part biodiversity worldwide. A globally coordinated research effort needed to understand drivers such changes predict effects...
Summary Non‐structural carbon (NSC) storage (i.e. starch, soluble sugras and lipids) in tree stems play important roles metabolism growth. Their spatial distribution wood may explain species‐specific differences dynamics, growth survival. However, quantitative information on the of starch lipids is sparse due to methodological limitations. Here we assessed NSC lipid between tropical species with different mortality rates contrasting functional types. We measured sugars cores up 4 cm deep...