Ecoregional, catchment, and reach-scale environmental factors shape functional-trait structure of stream fish assemblages

Pease, Allison A.; Taylor, Jason M.; Winemiller, Kirk O.; King, Ryan S.

doi:10.1007/s10750-015-2235-z

Cited by 47 publications

(50 citation statements)

References 69 publications

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“…Trait‐based studies can provide useful information about the variables that intervene in the assembly of biotic communities. Most trait‐based studies of freshwater fish communities have focused on the patterns of longitudinal zonation of functional diversity and on identifying the spatial and environmental variables that act upon the trait structure of communities at different scales (Cardoso, Rigal, Borges et al., ; Carvalho & Tejerina‐Garro, , ; Pease et al., , ; Strecker et al., ). However, there is still much to explore about the local determinants of trait structure in freshwater fish communities.…”

Section: Discussionmentioning

confidence: 99%

“…Frimpong and Angermeier () define ecological traits as those that reflect an organism's environmental preferences and associated behaviours. Despite the panoply of concepts, the trait‐based approach has contributed greatly to the study of community assembly and is a useful tool to predict the way freshwater fish communities might change due to anthropogenic disturbances (Pease, Taylor, Winemiller, & King, ; Pool, Olden, Whittier, & Paukert, ). For example, it has been evidenced that certain traits of predator fish such as the mouth gape size can influence the composition of the communities in Neotropical floodplains (Montaña, Layman, & Winemiller, ) and likewise that the complexity of mesohabitat structure determines the morphological diversity of fish assemblages (Montaña & Winemiller, ).…”

Section: Introductionmentioning

confidence: 99%

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Fish trait diversity in littorals of two floodplain lakes of the highly biodiverse Caura River, Venezuela

Echevarría

González²

2017

Ecology of Freshwater Fish

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We studied the trait diversity and structure in the fish communities of two floodplain lakes of the Caura River: Aricagua and Paramuto, during one hydrological cycle. We calculated taxonomic and a functional alpha and beta diversities and made comparisons among hydrological seasons and among habitats within each lake based on rarefactions. The trait structure was explored with an RLQ (analysis of a table R of environmental conditions, a table L of abundances of species and a table Q of species traits) analysis, and pairwise relationships between environmental variables and traits were explored with fourth-corner analyses. Despite its smaller extension, Paramuto showed higher alpha taxonomic and trait diversities. The substrates of open sand and those covered by leaf litter were the most diverse habitats in terms of both species and traits. The trait structure of the fish communities was influenced by the hydrological seasons, the lakes as well as water pH and temperature, and in a lesser degree dissolved oxygen, habitat type and total dissolved solids in the water. These factors constitute the habitat templet for the fish community's composition and trait structure. K E Y W O R D Scomponents of beta diversity, fourth-corner analysis, neotropical freshwater fish communities, RLQ analysis

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fish trait diversity in littorals of two floodplain lakes of the highly biodiverse Caura River, Venezuela

Echevarría

González²

2017

Ecology of Freshwater Fish

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“…Undoubtedly, the assembly of fish communities has been intensely studied through different approaches that include the modeling of species abundances (Strange et al 1992), the effect of environmental filters (Mouillot et al 2007, Mouchet et al 2013, Pease et al 2015, trophic eco-morphology (Adlte and Winemiller 1996, Sampaio et al 2013, Blasina et al 2016, the elements of meta-community structure (Fernandes et al 2013, Erős et al 2016), among others. These studies have contributed to the understanding of the influence of environmental factors, landscape, the evolutionary history of the species and biotic interactions in the organization of communities.…”

Section: Introductionmentioning

confidence: 99%

Co-occurrence patterns of fish species in two aquatic habitats of the Arauca River floodplain, Venezuela

Echevarría

Rodrı́guez

2017

Community Ecology

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Abstract:The study of co-occurrence patterns has been extensively applied to propose assembly rules for community organization. Recently, a new interest has grown in the effect of gradients on these patterns and to analyze them through new approximations such as co-occurrence networks, through which keystone species can be identified. Neotropical floodplains represent interesting systems to study such patterns, because of their spatial heterogeneity, temporal variability and their high fish species richness. With this in mind, our goal was to study the co-occurrence patterns of fish in a segment of the Arauca River's floodplain and the influence of the spatial and temporal variability on them. One stream and one floodplain lake were sampled with gill nets during 2014 -2015 across a hydrological cycle and 5 matrices for each 5 sampled months in each water body were prepared to explore the co-occurrence patterns in each water body across months and 2 for the entire period, through a probabilistic pair-wise analysis of species co-occurrence that identified aggregated and segregated species pairs. With the observed cooccurrences × water body × month, the species weighted degrees and betweenness were calculated, and co-occurrence networks were constructed. The networks structures, in terms of the degrees of every species, were compared spatially and temporally through a generalized linear model. The stream showed the highest numbers of aggregated species pairs, and in general showed the most complex networks in terms of nodes, edges and degrees. The habitat type and the hydrological phases significantly influenced the structure of the fish co-occurrence networks. Two species, Loricariichthys brunneus and Pygocentrus cariba were identified as the core of the fish communities of the floodplain and as keystone species because they contribute to the connection of the networks by having a series of links with less frequent species.

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“…, Zeug and Winemiller ) and for riverine species avoiding high flows in channels (Pease et al. , Price et al. ).…”

Section: Discussionmentioning

confidence: 99%

Interactive effects of hydrogeomorphology on fish community structure in a large floodplain river

Thoms

Sorenson

2019

Ecosphere

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Biocomplexity is an emergent property of ecosystems that captures the interplay of structures and processes at multiple scales. These interactions can establish a dynamic habitat template that serves as a filter to define ecological organization across landscapes. Studies of biocomplexity in floodplain rivers typically focus on hydrological variability or geomorphic heterogeneity separately, with their interactions being an output rather than the direct focus of investigations. This study examines the interaction of hydrological variability and geomorphic heterogeneity across 25 off‐channel habitats (OCHs) of the Upper Mississippi River, USA. Questions posed were as follows: What are the interactive effects of hydrological variability and geomorphic heterogeneity shaping the physical habitat template of OCHs? and How does the organization of the physical habitat template influence fish community composition within OCHs? Three distinct OCH groups emerged from this study: where hydrological variability defined Group 1 (Lake group); Group 2 was organized via geomorphic heterogeneity (Backwater group); and a combination of hydrological and geomorphological variables defined Group 3 (Slackwater group). Thus, the differential interaction of hydrology and geomorphology defined the dynamic physical habitat template of OCHs in this riverine landscape. No significant difference between the association matrices of the hydrogeomorphic template and fish community composition for the 25 OCH sites was recorded. A priori grouping of fish into the three OCH groups revealed marked differences in fish community composition. A subset of hydrogeomorphic variables that defined the physical character of the OCHs acted as an environmental filter for the fish community composition of the three OCH groups. A conceptual model explaining hydrogeomorphic–ecological interactions across the OCHs of this floodplain river system is provided.

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Ecoregional, catchment, and reach-scale environmental factors shape functional-trait structure of stream fish assemblages

Cited by 47 publications

References 69 publications

Fish trait diversity in littorals of two floodplain lakes of the highly biodiverse Caura River, Venezuela

Fish trait diversity in littorals of two floodplain lakes of the highly biodiverse Caura River, Venezuela

Co-occurrence patterns of fish species in two aquatic habitats of the Arauca River floodplain, Venezuela

Interactive effects of hydrogeomorphology on fish community structure in a large floodplain river

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