Trophic structure of coastal meta-ecosystems in the tropical Southwestern Atlantic

Macedo, Morgana Maria; Angelini, Ronaldo; Silva, VictorE.L. da; Fabré, Nidia Noemí

doi:10.1016/j.ecss.2021.107654

Cited by 12 publications

(1 citation statement)

References 31 publications

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“…Species within these dominant guilds use different habitats according to their life stages [37], presenting physiological and morphological adaptations that allow them to support the challenging condition of these areas, such as high plasticity in their diet [8,60] and wide salinity tolerance [12]. In contrast, marine stragglers enter estuaries in low numbers, often accidentally, and their presence is typically brief, as they tend to lack these adaptations [17,61]. Freshwater species dominated the biomass of the assemblage, although their abundance was extremely low, representing a low number of larger individuals.…”

Section: Fish Assemblages From the Tejo Estuary: Ecological Guild Com...mentioning

confidence: 99%

Changes in the Functional Role of the Tejo Estuary (Portugal, Europe) According to Fish Ecological Guilds

França

2023

Fishes

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Estuaries are extremely productive ecosystems, providing habitats for numerous aquatic species and crucial ecological services. The Tejo estuary, one of the largest European estuaries, has been thoroughly studied, and its important functional role as a nursery for several commercially important fish species is already established. In the present work, a trait-based approach was applied to functionally describe the fish community structure of the Tejo estuary and to enlighten potential changes in the ecosystem functioning at this level, following environmental changes expected to occur. To predict the distribution of species from the two most representative ecological guilds of the Tejo estuary, estuarine residents and marine migrants, species distribution models were built using an ensemble technique (combining forecasts of single models). The predictions obtained were more accurate for the marine migrants and the species distribution was strongly related with salinity, whereas estuarine species, were also influenced by depth, habitat type and river flow. The potential distributions of these ecological guilds showed that marine migrants will tend to use upstream areas in the estuary, where salinity is lower. Nonetheless, salinity is expected to increase as extreme weather events such as droughts tend to occur more frequently, decreasing favorable habitat availability for these species, and thus threatening the crucial role this ecosystem plays for these species.

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Section: Fish Assemblages From the Tejo Estuary: Ecological Guild Com...mentioning

confidence: 99%

Changes in the Functional Role of the Tejo Estuary (Portugal, Europe) According to Fish Ecological Guilds

França

2023

Fishes

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Fish assemblage structure and functional guild composition of Matla Estuary, Indian Sundarbans

Bhutia,

Devadas,

Bella

et al. 2024

Aquat Sci

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Functional and taxonomic β diversity in fish assemblages is structured by turnover in a tropical coastal lagoon

Hernández-Mendoza,

Escalera-Vázquez,

Vega-Cendejas

et al. 2024

Environ Biol Fish

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The study of beta diversity and its turnover and nestedness components allows us to understand the mechanisms that structure biotic communities within an ecosystem, which in turn enables the creation of strategies for their conservation and management. This study analyzed the beta diversity of fish assemblages in a coastal lagoon from two diversity facets: taxonomic and functional. Six bimonthly samplings were conducted by dividing the lagoon into three zones (inlet, mixing, and upper). Three trawls were performed at random points within each zone, and the parameters of dissolved oxygen (DO), pH, total dissolved solids (TDS), salinity, temperature, and depth were determined. A total of 1437 fish were captured and identified, and 14 functional traits related to locomotion and feeding were determined. Additionally, the beta diversity and its components for each diversity facet were determined. Differences in physicochemical parameters between climatic seasons and lagoon zones were identified; the external zone showed a higher number of species. However, the mixing zone exhibited greater functional richness, indicating that species with different functional characteristics converged in this area. Functional beta diversity showed higher values than taxonomic beta diversity, demonstrating functional differentiation of fish in the lagoon. In both facets, the turnover component predominantly contributes to beta diversity. The correlation between diversity and physicochemical parameters suggests that an environmental filter determines the presence of certain species and functions within the lagoon.

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Trophic structure of coastal meta-ecosystems in the tropical Southwestern Atlantic

Cited by 12 publications

References 31 publications

Changes in the Functional Role of the Tejo Estuary (Portugal, Europe) According to Fish Ecological Guilds

Changes in the Functional Role of the Tejo Estuary (Portugal, Europe) According to Fish Ecological Guilds

Fish assemblage structure and functional guild composition of Matla Estuary, Indian Sundarbans

Functional and taxonomic β diversity in fish assemblages is structured by turnover in a tropical coastal lagoon

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