Ecography
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Evolution of dispersal strategies and dispersal syndromes in fragmented landscapesHabitat fragmentation, an important element of current global change, has profound repercussions on population and species extinction. Landscape fragmentation reduces individual movements between patches (i.e. dispersal) while such movements connecting patches enhance the persistence of metapopulations and metacommunities. Through the recognition of non‐random movements, dispersal has rece... ...
Ecography - Tập 40 Số 1 - Trang 56-73 - 2017
Assembly rules of ectoparasite communities across scales: combining patterns of abiotic factors, host composition, geographic space, phylogeny and traitsWe investigated the role of environmental filtering as an underlying mechanism of assembly of compound communities of fleas parasitic on Palearctic small mammals at two spatial scales; a continental scale (encompassing regions across the entire Palearctic) and a regional scale (across sampling localities within Slovakia). We used the three‐table ordination (the RLQ analysis) and its extend... ...
Ecography - Tập 38 Số 2 - Trang 184-197 - 2015
Hierarchical effects of environmental filters on the functional structure of plant communities: a case study in the French AlpsUnderstanding the influence of the environment on the functional structure of ecological communities is essential to predict the response of biodiversity to global change drivers. Ecological theory suggests that multiple environmental factors shape local species assemblages by progressively filtering species from the regional species pool to local communities. These successive filters shou... ...
Ecography - Tập 36 Số 3 - Trang 393-402 - 2013
Do stream fish track climate change? Assessing distribution shifts in recent decadesUnderstanding the ability of species to shift their distribution ranges in response to climate change is crucial for conservation biologists and resources managers. Although freshwater ecosystems include some of the most imperilled fauna worldwide, such range shifts have been poorly documented in streams and rivers and have never been compared to the current velocity of climate change. Bas... ...
Ecography - Tập 36 Số 11 - Trang 1236-1246 - 2013
Collinearity: a review of methods to deal with it and a simulation study evaluating their performanceCollinearity refers to the non independence of predictor variables, usually in a regression‐type analysis. It is a common feature of any descriptive ecological data set and can be a problem for parameter estimation because it inflates the variance of regression parameters and hence potentially leads to the wrong identification of relevant predictors in a statistical model. Collinearity is ... ...
Ecography - Tập 36 Số 1 - Trang 27-46 - 2013
Food‐web structure varies along environmental gradients in a high‐latitude marine ecosystemLarge‐scale patterns in species diversity and community composition are associated with environmental gradients, but the implications of these patterns for food‐web structure are still unclear. Here, we investigated how spatial patterns in food‐web structure are associated with environmental gradients in the Barents Sea, a highly productive shelf sea of the Arctic Ocean. We compared food w... ...
Ecography - Tập 42 Số 2 - Trang 295-308 - 2019
Modeling of species distributions with Maxent: new extensions and a comprehensive evaluationAccurate modeling of geographic distributions of species is crucial to various applications in ecology and conservation. The best performing techniques often require some parameter tuning, which may be prohibitively time‐consuming to do separately for each species, or unreliable for small or biased datasets. Additionally, even with the abundance of good quality data, users interested in th... ...
Ecography - Tập 31 Số 2 - Trang 161-175 - 2008
spThin: an R package for spatial thinning of species occurrence records for use in ecological niche modelsSpatial thinning of species occurrence records can help address problems associated with spatial sampling biases. Ideally, thinning removes the fewest records necessary to substantially reduce the effects of sampling bias, while simultaneously retaining the greatest amount of useful information. Spatial thinning can be done manually; however, this is prohibitively time consuming for large ... ...
Ecography - Tập 38 Số 5 - Trang 541-545 - 2015
Minimum required number of specimen records to develop accurate species distribution modelsSpecies distribution models (SDMs) are widely used to predict the occurrence of species. Because SDMs generally use presence‐only data, validation of the predicted distribution and assessing model accuracy is challenging. Model performance depends on both sample size and species’ prevalence, being the fraction of the study area occupied by the species. Here, we present a novel method using... ...
Ecography - Tập 39 Số 6 - Trang 542-552 - 2016
Using trait and phylogenetic diversity to evaluate the generality of the stress‐dominance hypothesis in eastern North American tree communitiesThe stress‐dominance hypothesis (SDH) is a model of community assembly predicting that the relative importance of environmental filtering increases and competition decreases along a gradient of increasing environmental stress. Tests of the SDH at limited spatial scales have thus far demonstrated equivocal support and no prior study has assessed the generality of the SDH at continental scal... ...
Ecography - Tập 37 Số 9 - Trang 814-826 - 2014
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