A5079623812- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Wildlife Ecology and Conservation
- Species Distribution and Climate Change
- Animal Ecology and Behavior Studies
- Land Use and Ecosystem Services
- Ecosystem dynamics and resilience
- Forest ecology and management
- Rangeland Management and Livestock Ecology
- Wildlife-Road Interactions and Conservation
- Botany and Plant Ecology Studies
- African Botany and Ecology Studies
- Forest Management and Policy
- Forest Ecology and Biodiversity Studies
- Rangeland and Wildlife Management
- Mycorrhizal Fungi and Plant Interactions
- Insect and Arachnid Ecology and Behavior
- Turtle Biology and Conservation
- Plant Water Relations and Carbon Dynamics
- Plant Parasitism and Resistance
- Conservation, Biodiversity, and Resource Management
- Animal Behavior and Reproduction
- Tree-ring climate responses
- Marine and fisheries research
- Remote Sensing and LiDAR Applications
Helmholtz Centre for Environmental Research
2016-2025
German Centre for Integrative Biodiversity Research
2016-2025
Ecological Society of America
2020
John Wiley & Sons (United States)
2020
Chinese Academy of Sciences
2013
University of Freiburg
2013
University of Göttingen
2013
University of Buenos Aires
2006-2012
Consejo Nacional de Investigaciones Científicas y Técnicas
2012
Agricultural Plant Physiology and Ecology Research Institute
2012
A large number of methods for the analysis point pattern data have been developed in a wide range scientific fields. First‐order statistics describe large‐scale variation intensity points study region, whereas second‐order characteristics are summary all point‐to‐point distances mapped area and offer potential detecting both different types scales patterns. Second‐order based on Ripley's K‐function is increasingly used ecology to characterize spatial patterns develop hypothesis underlying...
Summary Fundamental ecological research is both intrinsically interesting and provides the basic knowledge required to answer applied questions of importance management natural world. The 100th anniversary British Ecological Society in 2013 an opportune moment reflect on current status ecology as a science look forward high‐light priorities for future work. To do this, we identified 100 important fundamental pure ecology. We elicited from ecologists working across wide range systems...
Summary The spatial pattern of tree species retains signatures factors and processes such as dispersal, available resource patches for establishment, competition demographics. Comparison the different size classes can thus help to reveal importance characteristics underlying processes. However, dynamics may be masked by large‐scale heterogeneous site conditions, e.g. when restricting regeneration sites superimposes emergent patterns. Here we ask how environmental heterogeneity influence...
Abstract. Question: In semi‐arid systems, rainfall gradients can cause plant‐plant interactions to shift from negative positive or vice versa. However, the importance of a second major abiotic factor, soil nutrients, has rarely been considered. We consider different combinations both factors and ask: do net adult‐seedling become less competitive more facilitative with increasing overall harshness? Location: Succulent Karoo, Western Cape, South Africa. Methods: examined between seedlings...
The mysterious ‘fairy circles’ are vegetation‐free discs that cover vast areas along the pro‐Namib Desert. Despite 30 yr of research their origin remains unknown. Here we adopt a novel approach focuses on analysis spatial patterns fairy circles obtained from representative 25‐ha aerial images north‐west Namibia. We use point pattern to quantify different features structures and then critically inspect existing hypotheses with respect ability generate observed circle patterns. Our working...
Over the last two decades spatial point pattern analysis (SPPA) has become increasingly popular in ecological research. To direct future work this area we review studies using SPPA techniques ecology and related disciplines. We first summarize key elements of (i.e. data types, summary statistics their estimation, null models, comparison consideration heterogeneity); second, how ecologists have used these elements; finally, identify practical difficulties that are still commonly encountered...
Significance Pattern-formation theory predicts that vegetation gap patterns, such as the fairy circles of Namibia, emerge through action pattern-forming biomass–water feedbacks and patterns should be found elsewhere in water-limited systems around world. We report here exciting discovery fairy-circle remote outback Australia. Using fieldwork, sensing, spatial pattern analysis, mathematical modeling, pattern-formation we show Australian share with their Namibian counterparts same...
Abstract Stochasticity is a core component of ecology, as it underlies key processes that structure and create variability in nature. Despite its fundamental importance ecological systems, the concept often treated synonymous with unpredictability community studies tend to focus on single forms stochasticity rather than taking more holistic view. This has led multiple narratives for how mediates dynamics. Here, we present framework describes different (notably demographic environmental...
Large areas of tropical forests have been lost through deforestation, resulting in fragmented forest landscapes. However, the dynamics fragmentation are still unknown, especially critical edge areas, which sources carbon emissions due to increased tree mortality. We analyzed changes for entire tropics using high-resolution cover maps. found that area from 27 31% total just 10 years, with largest increase Africa. The number fragments by 20 million consequences connectivity Simulations suggest...
The search for simple principles that underlie the spatial structure and dynamics of plant communities is a long-standing challenge in ecology1–6. In particular, relationship between species coexistence distribution plants challenging to resolve species-rich communities7–9. Here we present comprehensive analysis patterns 720 tree 21 large forest plots their consequences coexistence. We show with low abundance tend be more spatially aggregated than abundant species. Moreover, there...
We suggest that the conscious use of information is “hidden” in distinct structures nature itself and data extracted from (=pattern) during process modeling (=pattern‐oriented modeling) can substantially improve models ecological application conservation. Observed patterns, such as time‐series patterns spatial presence/absence habitat patches, contain a great deal on scales, site‐history, parameters processes. Use these provides criteria for aggregating biological model, relates model...
While the successional dynamics and large‐scale structure of Douglas‐fir forest in Pacific Northwest region is well studied, fine‐scale spatial characteristics at stand level are still poorly understood. Here we investigated on Vancouver Island, order to understand how three dominant species, Douglas‐fir, western hemlock, redcedar, coexist partition space along a chronosequence comprised immature, mature, old‐growth stands. We quantified changes distribution association species using...
We used point pattern analysis to examine the spatial distribution of 46 common tree species (diameter at breast height >10 cm) in a fully mapped $$500\times 500$$‐m tropical forest plot Sinharaja, Sri Lanka. aimed disentangle effect interactions (second‐order effects) and environment (first‐order on species’ distributions. To characterize first‐order associations (segregation, overlap), we developed classification scheme based Ripley’s K nearest‐neighbor statistics. subsequently...
Summary Although many reintroduction schemes for the Eurasian lynx Lynx in Germany have been discussed, implications of connectivity between suitable patches not assessed. We introduce an individual‐based, spatially explicit dispersal model to assess probability a dispersing animal reaching another patch complex heterogeneous German landscape, with its dense transport system. The was calibrated using telemetric data from Swiss Jura and based on map potential habitat. Most could be...
We construct and explore a general modeling framework that allows for systematic investigation of the impact changes in landscape structure on population dynamics. The essential parts are generator with independent control over composition physiognomy, an individual-based spatially explicit model simulates dynamics within heterogeneous landscapes, scale-dependent indices depict aspects interact dispersal demographic processes. Landscape maps represented by grid [Formula: see text] cells...
Abstract: We used a spatially explicit population model that was generalized to produce nine ecological profiles of long‐lived species with stable home ranges and natal dispersal investigate the effects habitat loss fragmentation on dynamics. simulated dynamics in landscapes composed three types (good‐quality ranging from 10–25%, poor‐quality 10–70%, matrix). Landscape structures varied highly fragmented completely contiguous. The specific aims our were (1) under which biological...
Clustering at multiple critical scales may be common for plants since many different factors and processes cause clustering. This is especially true tropical rain forests which theories explaining species coexistence community structure rest heavily on spatial patterns. We used point pattern analysis to analyze the of Shorea congestiflora, a dominant in 25-ha forest dynamics plot Sinharaja World Heritage Site (Sri Lanka), apparently shows clustering several scales. developed cluster...
Summary After an absence of almost 100 years, the Eurasian lynx Lynx is slowly recovering in Germany along German–Czech border. Additionally, many reintroduction schemes have been discussed, albeit controversially, for various locations. We present a habitat suitability model as basis further management and conservation efforts aimed at recolonization population development. developed statistical using logistic regression to quantify factors that describe home ranges fragmented landscape. As...
Mounting theoretical and empirical evidence shows that matrix heterogeneity may have contrasting effects on metapopulation dynamics by contributing to patch isolation in nontrivial ways. We analyze the movement properties during interpatch dispersal a of Iberian lynx (Lynx pardinus). On daily temporal scale, habitat selection defines two types habitats where individuals move: open (avoided used as available, respectively). There was strong complex impact at several scales (hourly...