S.M. Hennekens
A5090614175- Botany and Plant Ecology Studies
- Ecology and Vegetation Dynamics Studies
- Forest Ecology and Biodiversity Studies
- Species Distribution and Climate Change
- Peatlands and Wetlands Ecology
- Plant and animal studies
- Environmental Conservation and Management
- Plant Ecology and Soil Science
- Mediterranean and Iberian flora and fauna
- Forest Management and Policy
- Bryophyte Studies and Records
- Lichen and fungal ecology
- Remote Sensing and LiDAR Applications
- Forest ecology and management
- Wildlife Ecology and Conservation
- Land Use and Ecosystem Services
- Climate change and permafrost
- Animal Ecology and Behavior Studies
- Rangeland and Wildlife Management
- Plant Diversity and Evolution
- Evolution and Paleontology Studies
- Agricultural Economics and Policy
- Remote Sensing in Agriculture
- Geology and Paleoclimatology Research
- Rangeland Management and Livestock Ecology
Wageningen University & Research
2015-2024
Institute of Landscape Ecology of the Slovak Academy of Sciences
2024
Altera (United States)
2019-2020
University of Alaska Fairbanks
2017
Aarhus University
2013
Radboud University Nijmegen
2006-2007
Abstract Aims Vegetation classification consistent with the Braun‐Blanquet approach is widely used in Europe for applied vegetation science, conservation planning and land management. During long history of syntaxonomy, many concepts names units have been proposed, but there has no single system integrating these units. Here we (1) present a comprehensive, hierarchical, syntaxonomic alliances, orders classes syntaxonomy vascular plant, bryophyte lichen, algal communities Europe; (2) briefly...
Abstract. The computer software package TURBOVEG (for Microsoft® Windows®) was developed in Netherlands for the processing of phytosociological data. This comprises an easy‐to‐use data base management system. bank to be managed can divided into several bases which may consist up 100 000 relevés each. program provides methods input, import, selection, and export relevés. In 1994, accepted as standard European Vegetation Survey. Currently it has been installed more than 25 countries throughout...
Abstract The European Vegetation Archive ( EVA ) is a centralized database of vegetation plots developed by the IAVS Working Group Survey. It has been in development since 2012 and first made available for use research projects 2014. stores copies national regional vegetation‐ plot databases on single software platform. Data storage does not affect on‐going independent contributing databases, which remain property data contributors. uses prototype management TURBOVEG 3 joint multiple that...
Abstract Concern about biodiversity loss has led to increased public investment in conservation. Whereas there is a widespread perception that such initiatives have been unsuccessful, are few quantitative tests of this perception. Here, we evaluate whether rates change altered recent decades three European countries (Great Britain, Netherlands and Belgium) for plants flower visiting insects. We compared four 20‐year periods, comparing periods rapid land‐use intensification natural habitat...
Abstract Aim The EUNIS Habitat Classification is a widely used reference framework for European habitat types (habitats), but it lacks formal definitions of individual habitats that would enable their unequivocal identification. Our goal was to develop tool assigning vegetation‐plot records the system, use classify database, and compile statistically‐derived characteristic species combinations distribution maps these habitats. Location Europe. Methods We developed classification expert...
Abstract Aims Vegetation‐plot records provide information on the presence and cover or abundance of plants co‐occurring in same community. data are spread across research groups, environmental agencies biodiversity centers and, thus, rarely accessible at continental global scales. Here we present sPlot database, which collates vegetation plots worldwide to allow for exploration patterns taxonomic, functional phylogenetic diversity plant community level. Results version 2.1 contains from...
Abstract Aims Ellenberg‐type indicator values are expert‐based rankings of plant species according to their ecological optima on main environmental gradients. Here we extend the indicator‐value system proposed by Heinz Ellenberg and co‐authors for Central Europe incorporating other systems (i.e., those using scales compatible with values) developed European regions. Our aim is create a harmonized data set applicable at scale. Methods We collected sets vascular plants selected 13 that used...
The ongoing decline of many plant species in Northwest Europe indicates that traditional conservation measures to improve the habitat quality, although useful, are not enough halt diversity losses. Using recent databases, we show for first time differences between adaptations various dispersal vectors, combination with changes availability these contribute significantly explaining losses 20th century. Species water- or fur-assisted over-represented among declining species, while others...
Functional diversity within communities may influence ecosystem functioning, but which factors drive functional diversity? We hypothesize that assembled from many phylogenetic lineages show large if assembly is random, low controlled by interactions between species lineages. combined > 9000 descriptions of Dutch plant communities, a species-level phylogeny, and information on 16 traits (including eight dispersal traits). found all were conserved lineages, nevertheless showed smaller...
Abstract Aim Woodlands make up a third of European territory and carry out important ecosystem functions, yet comprehensive overview their invasion by alien plants has never been undertaken across this continent. Location Europe. Methods We extracted data from 251,740 vegetation plots stored in the recently compiled Vegetation Archive. After filtering (resulting 83,396 plots; 39 regions; 1970–2015 time period), we analysed species pool frequency vascular with respect to geographic origin...
Abstract Motivation Assessing biodiversity status and trends in plant communities is critical for understanding, quantifying predicting the effects of global change on ecosystems. Vegetation plots record occurrence or abundance all species co‐occurring within delimited local areas. This allows absences to be inferred, information seldom provided by existing datasets. Although many vegetation have been recorded, most are not available research community. A recent initiative, called ‘sPlot’,...
Abstract Aims We introduce ReSurveyEurope — a new data source of resurveyed vegetation plots in Europe, compiled by collaborative network scientists. describe the scope this initiative, provide an overview currently available data, governance, contribution rules, and accessibility. In addition, we outline further steps, including potential research questions. Results includes from all habitats. Version 1.0 contains 283,135 observations (i.e., individual surveys each plot) 79,190 sampled 449...
Abstract This article describes FloraVeg.EU, a new online database with open‐access information on European vegetation units (phytosociological syntaxa), vegetated habitats, and plant taxa. It consists of three modules. (1) The Vegetation module includes 149 phytosociological classes, 378 orders 1305 alliances an updated version the EuroVegChecklist modified based decisions Classification Committee. dominated by vascular plants are characterized country‐based distribution maps data dominant...
Abstract Aim Data from vegetation plots can be used for the assessment of past change in three ways: (1) comparison old and new records permanent established monitoring; (2) revisiting historical phytosociological subsequent records; (3) large sets same area but different plots. Option would cheapest regions where vegetation‐plot databases are available, there is a risk incorrect results due to spatial mismatch Here we assess accuracy such analyses. Methods We data C zech mountain bogs D...
Aims: An Arctic Vegetation Classification (AVC) is needed to address issues related rapid Arctic-wide changes climate, land-use, and biodiversity.Location: The 7.1 million km 2 tundra biome.Approach conclusions: purpose, scope conceptual framework for an Archive (AVA) were developed during numerous workshops starting in 1992.The AVA AVC are modeled after the European vegetation archive (EVA) classification (EVC).The will use Turboveg data management.The a Braun-Blanquet...
Abstract Aim Vegetation types of Mediterranean thermophilous pine forests dominated by Pinus brutia , halepensis pinaster and pinea were studied in various areas. However, a comprehensive formal vegetation classification these based on detailed data analysis has never been developed. Our aim is to provide the first broad‐scale large set plots. Location Southern Europe, North Africa, Levant, Anatolia, Crimea Caucasus. Methods We prepared European forest selected 7,277 plots cold‐sensitive...
Abstract Aims To create a comprehensive, consistent and unequivocal phytosociological classification of European marsh vegetation the class Phragmito‐Magnocaricetea . Location Europe. Methods We applied Cocktail method to data set 249,800 plots. identified main purposes attributes on which base classification, defined assignment rules for plots, prepared formal definitions all associations, alliances orders using logic. Each formula consists combination “functional species groups”, cover...
Abstract Question: How does semi‐natural grassland diversify after 65 years of differential application Ca, N, P, and K fertilizers? Is fertilizer adequately reflected by the Ellenberg indicator values (EIVs)? Location: Eifel Mountains, West Germany. Methods: The Rengen Grassland Experiment (RGE) was established in an oligotrophic 1941. Six treatments (Ca, CaN, CaNP, CaNP‐KCl, CaNP‐K 2 SO 4 , unfertilized control) were applied annually five complete randomized blocks. Species composition...
Species distribution models (SDMs) are routinely applied to assess current as well future species distributions, for example impacts of environmental change on biodiversity or underpin conservation planning. It has been repeatedly emphasized that SDMs should be evaluated based not only their goodness fit the data, but also realism modeled ecological responses. However, possibilities latter hampered by limited knowledge true responses a lack quantitative evaluation methods. Here we compared...