Partitioning beta diversity of aquatic macrophyte assemblages in a large subtropical reservoir: prevalence of turnover or nestedness?

Boschilia, Solana Meneghel; Oliveira, Edson Fontes de; Schwarzbold, Albano

doi:10.1007/s00027-015-0450-3

Cited by 21 publications

(17 citation statements)

References 45 publications

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“…Our results thus suggest that turnover in species composition primarily accounts for macrophyte beta diversity. Aquatic macrophytes have similarly shown high levels of species turnover at a regional and continental extent (Heegaard, ; Viana et al ., ; Boschilia et al ., ). However, our finding conflicts with previous global extent studies on beta diversity in which nestedness contributed equally or more than species turnover to total diversity of amphibians (Baselga et al ., ), fish (Leprieur et al ., ), macroinvertebrates (Heino et al ., ) and oribatid mites (Gergocs & Hufnagel, ).…”

Section: Discussionmentioning

confidence: 97%

Global variation in the beta diversity of lake macrophytes is driven by environmental heterogeneity rather than latitude

Alahuhta

Kosten

Akasaka

et al. 2017

Journal of Biogeography

137

117

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Aim\ud \ud We studied global variation in beta diversity patterns of lake macrophytes using regional data from across the world. Specifically, we examined (1) how beta diversity of aquatic macrophytes is partitioned between species turnover and nestedness within each study region, and (2) which environmental characteristics structure variation in these beta diversity components.\ud Location\ud \ud Global.\ud Methods\ud \ud We used presence–absence data for aquatic macrophytes from 21 regions distributed around the world. We calculated pairwise-site and multiple-site beta diversity among lakes within each region using Sørensen dissimilarity index and partitioned it into turnover and nestedness coefficients. Beta regression was used to correlate the diversity coefficients with regional environmental characteristics.\ud Results\ud \ud Aquatic macrophytes showed different levels of beta diversity within each of the 21 study regions, with species turnover typically accounting for the majority of beta diversity, especially in high-diversity regions. However, nestedness contributed 30–50% of total variation in macrophyte beta diversity in low-diversity regions. The most important environmental factor explaining the three beta diversity coefficients (total, species turnover and nestedness) was elevation range, followed by relative areal extent of freshwater, latitude and water alkalinity range.\ud Main conclusions\ud \ud Our findings show that global patterns in beta diversity of lake macrophytes are caused by species turnover rather than by nestedness. These patterns in beta diversity were driven by natural environmental heterogeneity, notably variability in elevation range (also related to temperature variation) among regions. In addition, a greater range in alkalinity within a region, likely amplified by human activities, was also correlated with increased macrophyte beta diversity. These findings suggest that efforts to conserve aquatic macrophyte diversity should primarily focus on regions with large numbers of lakes that exhibit broad environmental gradients

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Section: Discussionmentioning

confidence: 97%

Global variation in the beta diversity of lake macrophytes is driven by environmental heterogeneity rather than latitude

Alahuhta

Kosten

Akasaka

et al. 2017

Journal of Biogeography

137

117

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“…One of our main findings was that, in macrophyte communities, the influence of spatial processes on turnover was greater than on nestedness, thus, our first hypothesis that spatial turnover is explained by S more than nestedness was not rejected. A greater contribution of space for turnover than for nestedness is a typical finding for macrophytes (Alahuhta et al., ; Boschilia et al., ; Heegaard, ; Viana et al., ; Zhang, Molinos García, Zhang, & Xu, ) and for other aquatic communities (Heino et al., ; Soininen, Heino, & Wang, ), and the high environmental heterogeneity of floodplain landscapes is a likely explanation (Heino et al., ). Turnover was mainly explained by the H descriptors, while the pure E descriptors were not important.…”

Section: Discussionmentioning

confidence: 97%

“…In river–floodplain systems, habitat heterogeneity sets β‐diversity patterns in macrophytes by favoring some species or functional groups over others (Boschilia, Oliveira, & Schwarzbold, ; Morandeira & Kandus, ; Schneider, Cunha, Marchese, & Thomaz, ). For example, changes in water transparency, from turbid (during floods) to clear (during droughts), can lead to a replacement (turnover) of floating by submerged species.…”

Section: Introductionmentioning

confidence: 99%

The importance of local environmental, hydrogeomorphological and spatial variables for beta diversity of macrophyte assemblages in a Neotropical floodplain

Schneider

Cunha

Espínola

et al. 2019

J Vegetation Science

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Questions Understanding the processes that determine the variation in community composition (β‐diversity) is a major challenge in ecology, evolution, and conservation. Here we assess the importance of abiotic variables associated with local environmental features, hydrogeomorphology, and space to explain β‐diversity patterns in macrophytes by addressing the following questions: (1) Which are the sets of environmental, hydrogeomorphological, and spatial variables that contribute significantly to the spatial variation of macrophytes? (2) Which are their relative contributions to explaining the total β‐diversity, nestedness and turnover of macrophyte assemblages? Study Site Middle Paraná River floodplain, Argentina. Methods We sampled 20 lakes at low and high water levels in the Middle Paraná River floodplain. To investigate the relationship of total β‐diversity, turnover and nestedness with explanatory variables, we used the constrained analysis of principal coordinates (CAP). We used variation partitioning to assess the proportion of the variation related to each subset of variables (environmental, hydrogeomorphological and spatial). Results Among four alternatives considered to explain the spatial structure, the distance between lakes by watercourses best described the spatial organization of β‐diversity. Species turnover was largely explained by hydrogeomorphological variables, followed by spatial descriptors, whereas nestedness was exclusively related to spatial variables. Conclusions In the Middle Paraná River floodplain β‐diversity of macrophyte communities is partly shaped by turnover (mainly driven by the hydrogeomorphology of the floodplain) and nestedness (resulting from dispersal limitation by watercourses), but it also seems to be randomly organized (possibly because of random colonization and extinction, due to disturbances such as floods). Our work indicates that environmental pressures reflect differences between macrophyte communities of lakes with different geomorphological and hydrographical conditions. This suggests that certain ecological processes (such as species sorting) are driven at a higher degree by hydrogeomorphology than by local environment.

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“…Boschilia et al. (2016) found that high beta diversity (due to spatial turnover) in aquatic macrophyte assemblages is correlated with local‐scale environmental factors. Fu, Yuan, Jeppesen, Ge, Li, et al.…”

Section: Discussionmentioning

confidence: 99%

“…In a small‐scale subtropical reservoir, Boschilia et al. (2016) found that landscape configurations, local environmental conditions, and biotic interactions cause high beta diversity (mainly species turnover). In addition, aquatic macrophyte communities exhibit greater seasonal variation in community composition than terrestrial plants.…”

Section: Introductionmentioning

confidence: 99%

Seasonal patterns of taxonomic and functional beta diversity in submerged macrophytes at a fine scale

Wang

Wen

et al. 2021

Ecology and Evolution

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Partitioning beta diversity of aquatic macrophyte assemblages in a large subtropical reservoir: prevalence of turnover or nestedness?

Cited by 21 publications

References 45 publications

Global variation in the beta diversity of lake macrophytes is driven by environmental heterogeneity rather than latitude

Global variation in the beta diversity of lake macrophytes is driven by environmental heterogeneity rather than latitude

The importance of local environmental, hydrogeomorphological and spatial variables for beta diversity of macrophyte assemblages in a Neotropical floodplain

Seasonal patterns of taxonomic and functional beta diversity in submerged macrophytes at a fine scale

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