A5091790054- Species Distribution and Climate Change
- Ecology and Vegetation Dynamics Studies
- Remote Sensing in Agriculture
- Wildlife Ecology and Conservation
- Plant and animal studies
- Land Use and Ecosystem Services
- Remote Sensing and LiDAR Applications
- Plant Water Relations and Carbon Dynamics
- Animal Ecology and Behavior Studies
- Forest ecology and management
- Horticultural and Viticultural Research
- Rangeland and Wildlife Management
- Cryospheric studies and observations
- Plant Pathogens and Fungal Diseases
- Genetic diversity and population structure
- Soil Geostatistics and Mapping
- Vector-Borne Animal Diseases
- Animal Disease Management and Epidemiology
- Primate Behavior and Ecology
- Environmental and Cultural Studies in Latin America and Beyond
- Growth and nutrition in plants
- Remote Sensing and Land Use
- Viral Infections and Vectors
- Data Visualization and Analytics
- Animal Behavior and Welfare Studies
Fryske Akademy
2022-2024
University of Groningen
2010-2024
Universidad de Los Andes
2017-2022
Fondazione Edmund Mach
2015-2020
Université de Picardie Jules Verne
2017-2019
Ecologie et Dynamique des Systèmes Anthropisés
2016-2019
Centre National de la Recherche Scientifique
2016-2019
Understanding the causes and effects of species invasions is a priority in ecology conservation biology. One crucial steps evaluating impact invasive to map changes their actual potential distribution relative abundance across wide region over an appropriate time span. While direct indirect remote sensing approaches have long been used assess invasion plant species, animals mainly based on methods that rely environmental proxies conditions suitable for colonization by particular species. The...
Abstract Questions Niche differentiation is a central explanation for the co‐existence and distribution patterns of numerous tree species in tropical forests, but functional equivalence leading to neutral dynamics has been proposed as an alternative explanation. This niche vs debate fuelled by highly variable results yielded studies association between distributions environmental factors, where some find strong associations others do not. Here, we ask how differences sampling scale...
Alien invasive species can affect large areas, often with wide-ranging impacts on ecosystem structure, function and services. Prunus serotina is a widespread invader of European temperate forests, where it tends to form homogeneous stands limits recruitment indigenous trees. We hypotesized that invasion by P. would be reflected in the nutrient contents native species' leaves respiration invaded plots as efficient resource uptake changes cycling probably underly its aggressive invasiveness....
The accuracy of a map is dependent on the reference dataset used in its construction. Classification analyses thematic mapping can, for example, be sensitive to range sampling and data quality concerns. With particular focus latter, effects land cover classifications from airborne mapper are explored. Variations intensity effort highlighted that widely modelling studies; these may need accounting analyses. labelling was also key variable influencing accuracy. Accuracy varied with amount...
Abstract Aim To propose a species distribution modelling framework and its companion “ iSDM ” R package for predicting the potential realized distributions of invasive within invaded range. Location Northern France. Methods The non‐equilibrium with environment range affects environmental representativeness presence–absence data collected from field introduces uncertainty in observed absences as these may either reflect unsuitable sites or be incidental. address issues, we here an systematic...
The coexistence of numerous tree species in tropical forests is commonly explained by negative dependence recruitment on the conspecific seed and density due to specialist natural enemies that attack seeds seedlings ('Janzen-Connell' effects). Less known whether guilds shared predators can induce a different same plant functional group. We studied 54 plots forest Barro Colorado Island, Panama, with contrasting mature densities three coexisting large seeded predators. Levels predation were...
Background The movement patterns of wild animals depend crucially on the spatial and temporal availability resources in their habitat. To date, most attempts to model this relationship were forced rely simplified assumptions about spatiotemporal distribution food resources. Here we demonstrate how advances statistics permit combination sparse ground sampling with remote sensing imagery generate biological relevant, spatially temporally explicit distributions We illustrate our procedure by...
Ongoing habitat loss and fragmentation alter the functional diversity of forests. Generalising magnitude change in fragmented landscapes its drivers is challenging because multiple scales at which landscape takes place. Here we propose a multi-scale approach to determine whether processes local are reducing trees East Usambara Mountains, Tanzania. We employ structural equation modelling using five key plant traits (seed length, dispersal mode, shade tolerance, maximum tree height, wood...
Fruit abundance is a critical factor in ecological studies of tropical forest animals and plants, but difficult to measure at large spatial scales. We tried estimate variation fruit on relatively scale using low altitude, high‐resolution aerial photography. measured production for all 555 individuals the arborescent palm Astrocaryum standleyanum across 25 ha mapped moist Barro Colorado Island, Panama, by visually counting fruits from ground. Simultaneously, we used photographs map...
Abstract The spatial arrangement of tree species is a key aspect community ecology. Because in tropical forests occur at low densities, it logistically challenging to measure distributions across large areas. In this study, we evaluated the potential use canopy crown maps, derived from high‐resolution aerial digital photographs, as relatively simple method for measuring large‐scale distributions. At Barro Colorado Island, Panama, used photographs (~0.129 m/pixel) identify and map four target...
Abstract Aim Biodiversity monitoring at global scales has been identified as one of the priorities to halt biodiversity loss. In this context, Latin America and Caribbean (LAC), home 60% biodiversity, play an important role in development integrative platform. review, we explore what extent LAC advanced adoption remote sensing for are gaps opportunities integrate local into efforts Location Caribbean. Time period 1995 2022. Taxa studied Terrestrial organisms. Methods We reviewed application...
Páramos host more than 3500 vascular plant species and are crucial water providers for millions of people in the northern Andes. Monitoring distribution at large scales is an urgent conservation priority face ongoing climatic changes increasing anthropogenic pressure on this ecosystem. For first time ecosystem, we explored potential unoccupied aerial vehicles (UAV)-borne red, green, blue wavelengths (RGB) hyperspectral imagery páramo classification by collecting both types images a 10-ha...
Abstract Specimen records are a major source of species information for biodiversity research. However, specimen currently available may be geographically or environmentally biased. Detailed knowledge biases is useful understanding and accounting errors they introduce into analyses patterns. Here we study geographical environmental in online representing the flora Colombian Andes explore their effect on sample completeness at different spatial scales. We found strong sampling bias. Plant...
Species distribution models have become an important tool for biodiversity monitoring. Like all statistical modelling techniques developed based on field data, they are prone to uncertainty due bias in the sampling (e.g. identification, effort, detectability). In this study, we explicitly quantify and map derived from effort bias. With that aim, extracted data widely used GBIF dataset semantic using cartograms.
Páramos, tropical alpine ecosystems, host one of the world’s most diverse floras, account for largest water reservoirs in Andes, and some soil carbon pools worldwide. It is global importance to understand future this extremely carbon-rich ecosystem a warmer world its role on climate feedbacks. This study presents result first situ warming experiment two Colombian páramos using Open-Top Chambers. We evaluated response several balance-related processes, including decomposition, respiration,...
Abstract The distribution of suitable rest sites is considered to be a key determinant spatial patterns in animal activity. However, it not immediately evident which landscape features satisfy site requirements or how these are configured within the home range. We used Global Positioning System ( GPS )/accelerometer telemetry investigate selection at home‐range scale for northern tamanduas T amandua mexicana on B arro C olorado I sland BCI ), P anama. developed models specifying each...