Plant species–area relationships are determined by evenness, cover and aggregation in drylands worldwide
Abstract Aim Species–area relationships (also known as “species–area curves” and “species accumulation curves”) represent the relationship between species richness and the area sampled in a given community. These relationships can be used to describe diversity patterns while accounting for the well‐...
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crwiley:10.1111/geb.12849 2024-09-15T17:47:59+00:00 Plant species–area relationships are determined by evenness, cover and aggregation in drylands worldwide DeMalach, Niv Saiz, Hugo Zaady, Eli Maestre, Fernando T. Pither, Jason H2020 European Research Council 2018 http://dx.doi.org/10.1111/geb.12849 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgeb.12849 https://onlinelibrary.wiley.com/doi/pdf/10.1111/geb.12849 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/geb.12849 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Ecology and Biogeography volume 28, issue 3, page 290-299 ISSN 1466-822X 1466-8238 journal-article 2018 crwiley https://doi.org/10.1111/geb.12849 2024-07-18T04:25:36Z Abstract Aim Species–area relationships (also known as “species–area curves” and “species accumulation curves”) represent the relationship between species richness and the area sampled in a given community. These relationships can be used to describe diversity patterns while accounting for the well‐known scale‐dependence of species richness. Despite their value, their functional form and parameters, as well as their determinants, have barely been investigated in drylands. Location 171 drylands from all continents except Antarctica. Time period 2006–2013. Major taxa studied Perennial plants. Methods We characterized species–area relationships of plant communities by building accumulation curves describing the expected number of species as a function of the number of sampling units, and later compared the fit of three functions (power law, logarithmic and Michaelis–Menten). We tested the prediction that the effects of aridity, soil pH on the species–area relationship (SAR) are mediated by vegetation attributes such as evenness, cover and spatial aggregation. Results We found that the logarithmic relationship was the most common functional form ( c . 50%), followed by Michaelis–Menten ( c . 33%) and power law ( c . 17%). Functional form was mainly determined by evenness. Power‐law relationships were found mostly under low evenness, logarithmic relationships peaked under intermediate evenness and the Michaelis–Menten function increased in frequency with increasing evenness. The SAR parameters approximated by the logarithmic model [“small‐scale richness” ( b 0 ) and “accumulation coefficient” ( b 1 )] were determined by vegetation attributes. Increasing spatial aggregation had a negative effect on the small‐scale richness and a positive effect on the accumulation coefficient, while evenness had an opposite effect. In addition, the accumulation coefficient was positively affected by cover. Interestingly, increasing aridity decreased small‐scale richness but did not affect the accumulation coefficient. Main conclusions ... Article in Journal/Newspaper Antarc* Antarctica Wiley Online Library Global Ecology and Biogeography 28 3 290 299 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Aim Species–area relationships (also known as “species–area curves” and “species accumulation curves”) represent the relationship between species richness and the area sampled in a given community. These relationships can be used to describe diversity patterns while accounting for the well‐known scale‐dependence of species richness. Despite their value, their functional form and parameters, as well as their determinants, have barely been investigated in drylands. Location 171 drylands from all continents except Antarctica. Time period 2006–2013. Major taxa studied Perennial plants. Methods We characterized species–area relationships of plant communities by building accumulation curves describing the expected number of species as a function of the number of sampling units, and later compared the fit of three functions (power law, logarithmic and Michaelis–Menten). We tested the prediction that the effects of aridity, soil pH on the species–area relationship (SAR) are mediated by vegetation attributes such as evenness, cover and spatial aggregation. Results We found that the logarithmic relationship was the most common functional form ( c . 50%), followed by Michaelis–Menten ( c . 33%) and power law ( c . 17%). Functional form was mainly determined by evenness. Power‐law relationships were found mostly under low evenness, logarithmic relationships peaked under intermediate evenness and the Michaelis–Menten function increased in frequency with increasing evenness. The SAR parameters approximated by the logarithmic model [“small‐scale richness” ( b 0 ) and “accumulation coefficient” ( b 1 )] were determined by vegetation attributes. Increasing spatial aggregation had a negative effect on the small‐scale richness and a positive effect on the accumulation coefficient, while evenness had an opposite effect. In addition, the accumulation coefficient was positively affected by cover. Interestingly, increasing aridity decreased small‐scale richness but did not affect the accumulation coefficient. Main conclusions ... |
author2 |
Pither, Jason H2020 European Research Council |
format |
Article in Journal/Newspaper |
author |
DeMalach, Niv Saiz, Hugo Zaady, Eli Maestre, Fernando T. |
spellingShingle |
DeMalach, Niv Saiz, Hugo Zaady, Eli Maestre, Fernando T. Plant species–area relationships are determined by evenness, cover and aggregation in drylands worldwide |
author_facet |
DeMalach, Niv Saiz, Hugo Zaady, Eli Maestre, Fernando T. |
author_sort |
DeMalach, Niv |
title |
Plant species–area relationships are determined by evenness, cover and aggregation in drylands worldwide |
title_short |
Plant species–area relationships are determined by evenness, cover and aggregation in drylands worldwide |
title_full |
Plant species–area relationships are determined by evenness, cover and aggregation in drylands worldwide |
title_fullStr |
Plant species–area relationships are determined by evenness, cover and aggregation in drylands worldwide |
title_full_unstemmed |
Plant species–area relationships are determined by evenness, cover and aggregation in drylands worldwide |
title_sort |
plant species–area relationships are determined by evenness, cover and aggregation in drylands worldwide |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/geb.12849 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgeb.12849 https://onlinelibrary.wiley.com/doi/pdf/10.1111/geb.12849 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/geb.12849 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Global Ecology and Biogeography volume 28, issue 3, page 290-299 ISSN 1466-822X 1466-8238 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/geb.12849 |
container_title |
Global Ecology and Biogeography |
container_volume |
28 |
container_issue |
3 |
container_start_page |
290 |
op_container_end_page |
299 |
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1810288632131485696 |