A5032990851- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- Plant and animal studies
- Botany and Plant Ecology Studies
- Forest Ecology and Biodiversity Studies
- Mycorrhizal Fungi and Plant Interactions
- Rural development and sustainability
- Animal Ecology and Behavior Studies
- Wildlife Ecology and Conservation
University of Pennsylvania
2017-2024
University of Tartu
2013-2017
Summary The arbuscular mycorrhizal (AM) fungi are a globally distributed group of soil organisms that play critical roles in ecosystem function. However, the ecological niches individual AM fungal taxa poorly understood. We collected > 300 samples from natural ecosystems worldwide and modelled realised virtual (VT; approximately species‐level phylogroups). found environmental spatial variables jointly explained VT distribution worldwide, with temperature pH being most important abiotic...
Abstract Native biodiversity decline and non-native species spread are major features of the Anthropocene. Both processes can drive biotic homogenization by reducing trait phylogenetic differences in assemblages between regions, thus diminishing regional distinctiveness biotas likely have negative impacts on key ecosystem functions. However, a global assessment this phenomenon is lacking. Here, using dataset >200,000 plant species, we demonstrate widespread temporal decreases turnover...
Abstract Aim Identifying the factors that drive large‐scale patterns of biotic interaction is fundamental for understanding how communities respond to changing environmental conditions. Mycorrhizal symbiosis a key between fungi and most vascular plants. Whether plants are obligately (OM) or facultatively (FM) mycorrhizal, which mycorrhizal type they form – arbuscular (AM), ectomycorrhizal (ECM), ericoid (ERM) non‐mycorrhizal (NM) can have strong implications plant species distribution at...
Abstract Linking diversity to biological processes is central for developing informed and effective conservation decisions. Unfortunately, observable patterns provide only a proportion of the information necessary fully understanding mechanisms acting on particular population or community. We suggest managers use often overlooked relative species absences pay attention dark (i.e., set that are absent from site but could disperse establish there, in other words, portion habitat‐specific...
Large‐scale biodiversity maps are essential to macroecology. However, between‐region comparisons can be more useful if patterns of observed species richness supplemented by variations in dark diversity – the absent portion pool. We aim quantify and map plant across Europe using a measure that accounts for both diversity. To do this we need delimit suitable pools, evaluate potential limitation large‐scale dataset. used Atlas Florae Europaeae (ca 20% European mapped within 50 × km grid cells)...
Large-scale biodiversity studies can be more informative if observed diversity in a study site is accompanied by dark diversity, the set of absent although ecologically suitable species. Dark methodology still being developed and comparison different approaches needed. We used plant data at two scales (European seven large regions) compared estimates from mathematical methods: species co-occurrence (SCO) distribution modeling (SDM). Atlas Florae Europaeae (50 × 50 km grid cells) European...
For decades, ecologists have been testing for species saturation by using regression analysis to determine the relationship between local and regional richness. The cumulative result of scores studies meta-analyses has led a general consensus that evidence is relatively uncommon. However, bias induced on arbitrary choice area threatened undermine this even proposal abandon method entirely. Nonetheless, use local-regional richness relationships continues. We performed meta-analysis almost 100...
Much ecological research relies on existing multispecies distribution datasets. Such datasets, however, can vary considerably in quality, extent, resolution or taxonomic coverage. We provide a framework for spatially-explicit evaluation of geographical representation within large-scale species using the comparison an occurrence atlas with range dataset as working example. Specifically, we compared maps 3773 taxa from widely-used Atlas Florae Europaeae (AFE) digitised 2049 lesser-known North...
Abstract Aim Previous studies indicate that many plant species present in a surrounding region are absent from potentially suitable sites (i.e. they constitute dark diversity). However, quantitative analyses lacking where and why dispersal limitation occurs within occurrence range at the continental scale. We test if characteristics related to limitation, is, low seed production short potential distance, affect formation of diversity large spatial scales. In addition, we explore how levels...
Abstract Changes in climate and grazing intensity influence plant-community compositions their functional structure. Yet, little is known about possible interactive effects when change mainly has consequences during the growing season occurs off (dormant grazing). We examined contribution of trait plasticity to immediate responses structure plant community due interplay between these two temporally disjunct drivers. conducted a field experiment northern Mongolian steppe, where was...
Abstract Questions We asked how plant community composition responded to experimentally produced warmer and drier climate conditions at the landscape scale with existing variation in local species environmental conditions. aimed identify changes overall greatest response abundance, hypothesized that locally restricted may be more sensitive warming than widespread within based on assumption they have a narrower niche breadth respect Location Semiarid, northern Mongolian steppe. Methods...