Partitioning tadpole beta diversity in highland ponds with different hydroperiods

Knauth, Débora Schuck; Moreira, Leonardo Felipe Bairos; Maltchik, Leonardo

doi:10.1086/697926

Cited by 16 publications

(11 citation statements)

References 59 publications

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“…Under a metacommunity structure rationale, although our results indicated that species sorting and spatial processes jointly assembled macrophyte composition, our study indicated a prevalence of species sorting in macrophyte communities, not fully corroborating our main hypothesis. In this context, beta diversity patterns of macrophyte communities were similar to those found by most of the previous studies that investigated the effects of environmental drivers of freshwater communities in temporary ponds (Brendonck, Jocqué, Tuytens, Timms, & Vanschoenwinkel, ; Florencio, Díaz‐Paniagua, & Serrano, ; Florencio et al., ; Knauth, Felipe, Moreira, & Maltchik, ).…”

Section: Discussionsupporting

confidence: 84%

“…To our knowledge, only one study had partitioned beta diversity into its turnover and nestedness components among macrophyte communities in temporary ponds; it found a similar result, although it was conducted in a much more restricted spatial extent (Rolon et al., ). In addition, the predominance of turnover among macrophyte communities followed the pattern detected for other freshwater groups inhabiting temporary ponds, such as macroinvertebrates (Brendonck et al., ; Florencio et al., ) and tadpoles (Brendonck et al., ; Florencio et al., ; Knauth et al., ).…”

Section: Discussionmentioning

confidence: 52%

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Drivers of the beta diversity of aquatic plant communities along a latitudinal gradient in southern Brazilian coastal ponds

Bertuzzi

Pires

Maltchik

2019

J Vegetation Science

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Questions: Is macrophyte beta diversity in temporary ponds generated mainly by turnover along a latitudinal gradient? Is macrophyte beta diversity more strongly correlated with differences in local environmental conditions and climate than geographical distances? Are hydrophytes and helophytes correlated with distinct environmental drivers?Location: Southern Brazilian Coastal Plain. Methods:Macrophyte communities were studied in 24 ponds distributed along a latitudinal gradient. Beta diversity was calculated with the Sorensen dissimilarity index (and further partitioned into turnover and nestedness components). We assessed the individual correspondence of macrophyte beta diversity with local (water quality and habitat structure; after pre-selection procedures on each explanatory matrix) and climatic environmental drivers, as well as with the geographical distances, through Mantel correlation tests. Partial Mantel tests were carried out to assess the correspondence of beta diversity with the climatic drivers and geographical distances while controlling for the effect of each explanatory matrix. Separate assessments were carried out for subsets of hydrophytes and helophytes.Results: Macrophyte beta diversity was mainly generated by turnover. Mantel tests detected significant correlations of macrophyte beta diversity with climatic rather than with local environmental drivers. Partial Mantel tests detected significant relationships only between macrophyte beta diversity and climate (rather than geographical distances). Helophytes were more strongly correlated with climate than hydrophytes, and geographical distances were significantly correlated to hydrophyte beta diversity only. Conclusions:Our results indicate that macrophyte communities in southern Brazilian coastal temporary ponds are mainly assembled by species sorting processes, although the contribution of each assembly mechanism differed between functional groups (spatial processes were more important for hydrophytes than helophytes). The distinct relationships of hydrophytes and helophytes with climate suggest different sensitivity of each functional group to environmental changes in temporary ponds. K E Y W O R D S functional groups, growth forms, helophytes, hydrophytes, macrophytes, metacommunities, nestedness, turnover 282 | Additional supporting information may be found online in the Supporting Information section at the end of the article. Appendix S1 Local environmental drivers measured at each sampling site Appendix S2 Values of the WorldClim bioclimatic variables obtained for each sampling site Appendix S3 Relationships between the bioclimatic variables and the first four axes of the principal component analysis Appendix S4 Workflow of the statistical procedures undertaken for the assessment of the relationships between macrophyte beta diversity and environmental drivers and geographical distances Appendix S5 List of aquatic plant species and their corresponding functional groups recorded in the study Appendix S6 Outputs of the partial multi-variate...

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 52%

Drivers of the beta diversity of aquatic plant communities along a latitudinal gradient in southern Brazilian coastal ponds

Bertuzzi

Pires

Maltchik

2019

J Vegetation Science

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“…There was no indication that any amphibian species had negative associations with beaver dams in the southern Washington Cascades, despite literature indicating that relatively permanent water bodies can feature increased density of amphibian predators or competitors (Drayer & Richter, 2016; Knauth et al., 2018; Woodward, 1983). For example, beaver dams may increase habitat quality for trout, which were observed at many of our study sites, and can have major impacts on some pond‐breeding amphibians by preying on larvae (Pope, 2008; Vredenburg, 2004).…”

Section: Discussionmentioning

confidence: 94%

Beaver dams are associated with enhanced amphibian diversity via lengthened hydroperiods and increased representation of slow‐developing species

et al. 2020

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Land managers are increasingly using beavers to restore hydrological function, provide wildlife habitat, and mitigate the effects of climate extremes on water balances and ecosystems. Although North American beavers (Castor canadensis) and Eurasian beavers (Castor fiber) both hold great potential for landscape‐scale benefits, more information about the interactions between beavers and wildlife is necessary to maximise the ecological benefits and minimise the social and ecological costs of beaver‐centred management. Beaver dams create large, deep pools with long hydroperiods, which could benefit aquatic and semi‐aquatic species, especially pond‐breeding amphibians, which breed in still and slow‐moving water. We studied the relationship between beaver dams and pond‐breeding amphibians in the southern Washington Cascade Range of the north‐west U.S.A. by surveying 29 beaver‐dammed and 20 undammed lentic sites in three mid‐elevation (560–1,010 m) spatial blocks. We found that mean amphibian species richness was 2.7 times higher in dammed sites than in undammed sites (2.4 vs. 0.9 species). This increase in species richness was driven by increased occupancy of slow‐developing species—red‐legged frogs (Rana aurora) and northwestern salamanders (Ambystoma gracile)—which were also more abundant at sites with dams. These two species were detected almost exclusively in beaver‐dammed sites, suggesting that some amphibians rely heavily on beaver‐dammed sites for successful reproduction in areas such as our study blocks where ponds and wetlands with long hydroperiods are otherwise scarce. Species with highly variable development periods—long‐toed salamanders (Ambystoma macrodactylum) and rough‐skinned newts (Taricha granulosa)—showed nonsignificant trends of higher site occupancy and, in the case of newts, higher number of mating events per hectare in dammed sites compared to undammed sites. Compared to undammed sites, dammed ponds were consistently deeper and had longer hydroperiods, consistent with beavers benefitting slow‐developing amphibians primarily by increasing the quality of lentic breeding habitat. We suggest that slow‐developing amphibians and some variable‐rate developers might benefit greatly from beaver restoration, especially in areas where climate change is predicted to reduce summertime water levels. Beavers could therefore be useful and important components of ecosystem‐based restoration, management, and climate adaption, especially in parts of their native ranges in North America or Eurasia predicted to undergo climatic drying.

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“…Although anuran beta diversity has already been addressed in several studies [33, 36, 37], few have used an integrative approach to describe patterns of anuran beta diversity [30]. Although the dominance of environmental predictors over beta diversity has been reported in several studies [26, 29, 37], others have reported considerably greater spatial effects [38], or even a balance between both [30, 33]. These discrepancies occur because the different characteristics of anurans' life histories respond differently to ecological predictors, so that the metacommunity structure may differ between groups occurring in the same region [39].…”

Section: Introductionmentioning

confidence: 99%

Taxonomic and functional anuran beta diversity of a subtropical metacommunity respond differentially to environmental and spatial predictors

2019

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Anurans exhibit limited dispersion ability and have physiological and behavioural characteristics that narrow their relationships with both environmental and spatial predictors. So, the relative contributions of environmental and spatial predictors in the patterns of taxonomic and functional anuran beta diversity were examined in a metacommunity of 33 ponds along the coast of south Brazil. We expected that neutral processes and, in particular, niche-based processes could have similar influence on the taxonomic and functional beta diversity patterns. Distance-based methods (db-RDA) with variation partitioning were conducted with abundance data to examine taxonomic and functional facets and components (total, turnover and nestedness) in relation to environmental and spatial predictors. Processes determining metacommunity structure differed between the components of beta diversity and among taxonomic and functional diversity. While taxonomic beta diversity was further accounted by both environmental and spatial predictors, functional beta diversity responded more strongly to spatial predictors. These two contrasting patterns were different to what we had predicted, suggesting that while there is a taxonomic turnover mediated by environmental filters, the spatial distance promotes the trait dissimilarity between sites. In addition, our data confirm that neutral and niche-based processes operate on anuran metacommunities even at short geographic scales. Our results reinforce the idea that studies aiming to evaluate the patterns of structure in metacommunities should include different facets of diversity so that better interpretations can be achieved.

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Partitioning tadpole beta diversity in highland ponds with different hydroperiods

Cited by 16 publications

References 59 publications

Drivers of the beta diversity of aquatic plant communities along a latitudinal gradient in southern Brazilian coastal ponds

Drivers of the beta diversity of aquatic plant communities along a latitudinal gradient in southern Brazilian coastal ponds

Beaver dams are associated with enhanced amphibian diversity via lengthened hydroperiods and increased representation of slow‐developing species

Taxonomic and functional anuran beta diversity of a subtropical metacommunity respond differentially to environmental and spatial predictors

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