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• W3104807182 abstract "Abstract In community ecology, it is important to understand the distribution of communities along environmental and spatial gradients. However, it is common for the residuals of models investigating those relationships to be very high (> 50%). It is believed that species’ intrinsic characteristics such as rarity can contribute to large residuals. The objective of this study is to test the relationship among communities and environmental and spatial predictors by evaluating the relative contribution of common and rare species to the explanatory power of models. Our hypothesis is that the residual of partition the variation of community matrix (varpart) models will decrease as rare species get removed. We used several environmental variables and spatial filters as varpart model predictors of fish and Zygoptera (Insecta: Odonata) communities in 109 and 141 Amazonian streams, respectively. We built a repetition structure, in which we gradually removed common and rare species independently. After the repetitions and removal of species, our hypothesis was not corroborated. In all scenarios, removing up to 50% of rare species did not reduce model residuals. Common species are important and rare species are irrelevant for understanding the relationships among communities and environmental and spatial gradients using varpart. Therefore, our findings suggest that studies using varpart with single sampling events that do not detect rare species can efficiently assess general distributional patterns of communities along environmental and spatial gradients. However, when the objectives concern conservation of biodiversity and functional diversity, rare species must be carefully assessed by other complementary methods, since they are not well represented in varpart models." @default.
• W3104807182 created "2020-11-23" @default.
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• W3104807182 date "2020-11-13" @default.
• W3104807182 modified "2023-10-12" @default.
• W3104807182 title "The importance of common and the irrelevance of rare species for partition the variation of community matrix: implications for sampling and conservation" @default.
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• W3104807182 doi "https://doi.org/10.1038/s41598-020-76833-5" @default.
• W3104807182 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7666184" @default.
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