Taxonomic and functional distinctness of the fish assemblages in three coastal environments (bays, coastal lagoons and oceanic beaches) in Southeastern Brazil

Azevedo, Márcia Cristina Costa de; Gomes‐Gonçalves, Rafaela de Sousa; Mattos, Tailan Moretti; Uehara, Wagner; Guedes, Gustavo Henrique Soares; Araújo, Francisco Gerson

doi:10.1016/j.marenvres.2017.05.007

Cited by 26 publications

(7 citation statements)

References 51 publications

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“…In the Tramandaí River Basin three of the lakes studied have brackish waters (strictly coastal lagoons), despite the fact that these lakes are highly interconnected with other lakes. Azevedo et al (2017) also found a higher functional diversity in coastal lagoons compared to bays or beaches (a consequence of the salinity gradient) on the Southeastern coast of Brazil. However, it is important to note that in their study the lagoons evaluated were not interconnected.…”

Section: Discussionmentioning

confidence: 75%

“…These lakes are influenced by both marine and continental processes and were subjected to events of sea retraction and expansion, which connected and disconnected lakes during their formation (Schwarzbold and Schäfer 1984). Azevedo et al (2017) compared distinct types of coastal ecosystems in Southeast Brazil and observed that coastal lakes supported more functionally distinctive fish assemblages than beaches and bays. In highly connected lakes, communities may become functionally homogenized due to the frequent movement of vagile species (Guimarães et al 2014).…”

Section: Introductionmentioning

confidence: 99%

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Influences of the area, shape and connectivity of coastal lakes on the taxonomic and functional diversity of fish communities in Southern Brazil

et al. 2019

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In this study we investigated the influence of landscape variables on the alpha taxonomic and functional diversity of fish communities in coastal lakes. We built an analytical framework that included possible causal connections among variables, which we analyzed using path analysis. We obtained landscape metrics for the area, shape and connectivity (estuary connectivity and primary connectivity to neighboring lakes) of 37 coastal lakes in the Tramandaí River Basin. We collected fish data from 49 species using standardized sampling with gillnets and obtained a set of traits related to dispersal abilities and food acquisition. The model that best explained the taxonomic diversity and functional richness took into account the shape of the lakes. Functional richness was also explained by estuary connectivity. Functional evenness and dispersion were not predicted by area or connectivity, but they were influenced by the abundant freshwater species. This indicates that all lakes support most of the regional functional diversity. The results highlight the importance of the dispersal process in this lake system and allow the conclusion that considering multiple diversity dimensions can aid the conservation of local and regional fish communities.

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Section: Discussionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Influences of the area, shape and connectivity of coastal lakes on the taxonomic and functional diversity of fish communities in Southern Brazil

et al. 2019

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“…Species richness is commonly used as an explanatory variable for ecosystem function because it is easy to measure and sometimes correlates with functional diversity (Rosenfeld, Mall, & British, 2002). However, species composition and richness are poor predictors of the structure and function of the communities (Azevedo et al, 2017). Classifying species into groups based on taxonomic relationship and functional similarity have been shown to be an effective approach to study the influences of anthropogenic and environmental disturbances on ecosystems (Leibold & Chase, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…However, species composition and richness are poor predictors of the structure and function of the communities (Azevedo et al, 2017).…”

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confidence: 99%

Taxonomic and functional distinctness of the fish assemblages differing among different types of reservoirs in south‐eastern Brazil

Mattos

Carvalho

Guerra‐Júnior

et al. 2022

River Research & Apps

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The dynamics of fish assemblages in reservoirs depend on factors such as the morphometry of the catchment, habitat structure, and the uses of the reservoir. In the Paraíba do Sul (PSR) basin in southeastern Brazil, there are several types of reservoirs, some on the main channel, some are cascade reservoirs originated from a diversion of the waters of the PSR, and others are isolated reservoirs from tributaries. This study aimed to evaluate the influences of these three types of reservoirs on the taxonomic and functional distinctness of the fish assemblages. It was hypothesized that reservoirs on the main channel (more inflowing waters and habitat availability) have higher taxonomic and functional distinctness compared to cascade reservoirs, which in turn, have greater distinctness than isolated reservoirs. In addition, we expect assemblage structure to differ among these types of reservoirs because of the close relationship with local environmental conditions and habitat structure. Thirty measurements (26 quantitative and 4 categorical) from 34 fish species representing functional traits associated with locomotion, feeding, life strategy, and habitat use were taken. Fish assemblages differed among the three types of reservoirs, which was probably associated with different environmental and local habitat conditions. Higher taxonomic and functional distinctness were found for the isolated reservoirs, and lower for reservoirs on the main channel. This suggests that the fish fauna in this latter type of reservoir were probably composed of phylogenetically close and morphologically similar species. It is likely that limitation of the available resources induces fish to partition the available niches to coexist, favoring assemblages with species adapted to different functions. Our results demonstrate that assessing fish functional and taxonomic distinctness can be used to advance understanding of fish communities from reservoirs in Neotropical regions.

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“…Decreases in FD reduce the potential of communities to respond to changing environmental conditions in marine (Mouillot et al, 2011) and terrestrial ecosystems (Cadotte et al, 2011; Flynn et al, 2011). Sandy beaches are one of the most vulnerable coastal systems, as prior evidence suggests that few species fulfil key functional roles and may also be the least able to withstand eventual disturbances (Azevedo et al, 2017). Most decision‐making processes, however, have been based on species, habitat or socioeconomic metrics (D’Agata et al, 2014; Mouillot et al, 2011), and FD is often left out of management and conservation assessments (Laikre et al, 2016; von der Heyden, 2017).…”

Section: Introductionmentioning

confidence: 99%

Revealing the drivers of taxonomic and functional diversity of nearshore fish assemblages: Implications for conservation priorities

Esmaeili

Corte

Checon

et al. 2021

Diversity and Distributions

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Aim: Understanding patterns and drivers of biodiversity are essential towards developing effective conservation strategies for shallow marine habitats broadly. However, little is known about the natural and anthropogenic factors that structure fish biodiversity of sandy beaches, one of the largest and most socio-economically valuable nearshore habitats due to their endemic fauna, economic importance and cultural relevance. Here, we investigated how environmental variables and urbanization affect taxonomic and functional diversity of nearshore fish assemblages to provide general biodiversity patterns that can serve as baseline information for management plans when considering conservation prioritization.Location: Southeast Brazil. Methods:We surveyed fish communities at 77 sites along 150 km of coastline with different natural features and degrees of human influence using a combination of seine nets and surf-BRUVS. We used generalized additive models (GAMs) to investigate the influence of environmental variables and urbanization on taxonomic and functional diversity of resident fish assemblages. Main results:We found that significant breaker wave height was the most important environmental variable in explaining the taxonomic and functional diversity of fish assemblages. The effects of increasing wave height were mostly negative, except for piscivorous fishes, which were most abundant at high energy sites, and for benthic and zoobenthivorous species, which were most abundant at sites with intermediate wave exposure. The latter species were also associated with higher chlorophyll-a contributing to increased taxonomic richness and abundance. Further, anthropogenic impacts generally reduced diversity, with highest diversity only observed at the most pristine sites. Main conclusions:Our results demonstrate that both natural environmental variation and human activities structure the fish assemblages of sandy beach surf zones,

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Taxonomic and functional distinctness of the fish assemblages in three coastal environments (bays, coastal lagoons and oceanic beaches) in Southeastern Brazil

Cited by 26 publications

References 51 publications

Influences of the area, shape and connectivity of coastal lakes on the taxonomic and functional diversity of fish communities in Southern Brazil

Influences of the area, shape and connectivity of coastal lakes on the taxonomic and functional diversity of fish communities in Southern Brazil

Taxonomic and functional distinctness of the fish assemblages differing among different types of reservoirs in south‐eastern Brazil

Revealing the drivers of taxonomic and functional diversity of nearshore fish assemblages: Implications for conservation priorities

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