Results 21 to 30 of about 6,846,802 (336)

Species abundance distributions should underpin ordinal cover‐abundance transformations [PDF]

open access: yesApplied Vegetation Science, 2019
Abstract Questions The cover and abundance of individual plant species have been recorded on ordinal scales for millions of plots world‐wide. Ordinal cover data often need to be transformed to a quantitative form (0%–100%), especially when scrutinising summed cover of multiple species ...
McNellie, Megan J   +2 more
openaire   +1 more source

Environmental and ichthyofaunistic characteristics of Amazonian streams with and without fish farm [PDF]

open access: yesBrazilian Journal of Biology, 2023
The environmental impacts caused by fish farming can lead to changes in aquatic ecosystems, especially in fish communities. In this study, we investigated possible changes in water quality, in the number of species and individuals of the same species ...
S. M. Santos   +6 more
doaj   +1 more source

Global warming will affect the maximum potential abundance of boreal plant species [PDF]

open access: yes, 2020
Forecasting the impact of future global warming on biodiversity requires understanding how temperature limits the distribution of species. Here we rely on Liebig's Law of Minimum to estimate the effect of temperature on the maximum potential abundance ...
Hiirisalmi H.   +11 more
core   +1 more source

Improving species distribution model predictive accuracy using species abundance: Application with boosted regression trees

open access: yes, 2020
Auxiliary information in the form of species abundance is frequently available as part of data collected for ecological investigations, yet when modeling distributions of species over large regions, species presence (and sometimes absence) are typically ...
Hao Yu, A. Cooper, D. Infante
semanticscholar   +1 more source

A quantitative review of abundance-based species distribution models

open access: yesbioRxiv, 2021
The contributions of species to ecosystem functions or services depend not only on their presence in a given community, but also on their local abundance.
C. Waldock   +7 more
semanticscholar   +1 more source

Taking species abundance distributions beyond individuals [PDF]

open access: yesEcology Letters, 2009
AbstractThe species abundance distribution (SAD) is one of the few universal patterns in ecology. Research on this fundamental distribution has primarily focused on the study of numerical counts, irrespective of the traits of individuals. Here we show that considering a set of Generalized Species Abundance Distributions (GSADs) encompassing several ...
Morlon, H.   +14 more
openaire   +5 more sources

Long-term species richness-abundance dynamics in relation to species departures and arrivals in wintering urban bird assemblages [PDF]

open access: yes, 2019
Temporal dynamics of local assemblages depend on the species richness and the total abundance of individuals as well as local departure and arrival rates of species. We used urban bird survey data collected from the same 31 study plots and methods during
Jokimaki, Jukka, Suhonen, Jukka
core   +2 more sources

The influence of land drainage on the abundance and species composition of small mammals

open access: yesTheriologia Ukrainica, 2022
The article is devoted to the research on the abundance and species composition of small mammals in the territory of central Ukraine (Cherkasy, Poltava, and Kyiv oblasts) affected by land development by drainage.
Andriy Vyskushenko   +2 more
doaj   +1 more source

How selection structures species abundance distributions [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2012
How do species divide resources to produce the characteristic species abundance distributions seen in nature? One way to resolve this problem is to examine how the biomass (or capacity) of the spatial guilds that combine to produce an abundance distribution is allocated among species.
Magurran, Anne E., Henderson, Peter A.
openaire   +4 more sources

Modeling large scale species abundance with latent spatial processes [PDF]

open access: yes, 2009
Modeling species abundance patterns using local environmental features is an important, current problem in ecology. The Cape Floristic Region (CFR) in South Africa is a global hot spot of diversity and endemism, and provides a rich class of species ...
Chakraborty, Avishek   +4 more
core   +1 more source

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