Structure of a polychaete community in a mangrove in the northern coast of Brazil

Cutrim, Allana Stéphanie Tavares; Sousa, Lorena Karine Santos; Ribeiro, Rannyele Passos; Oliveira, Verônica Maria de; Almeida, Zafira da Silva de

doi:10.15446/abc.v23n3.67245

Cited by 8 publications

(5 citation statements)

References 27 publications

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“…In the survey area, the average density of polychaetes decreased after the end of the rainy season. Some previous studies have reported similar changes [47,48]. This shift shows that a large amount of rainfall affected the benthic ecosystem, which may lead to the development of a new benthic environment [49].…”

Section: Discussionsupporting

confidence: 61%

Effects of Freshwater Inflow during the Rainy Season on the Benthic Polychaete Community in the Geum River Estuary, South Korea

Kim,

Oh,

et al. 2024

Diversity

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In the estuaries of Korea, the freshwater inflow increases rapidly due to the Changma (Korean summer rainy season). To elucidate the effect of this massive freshwater inflow on the benthic polychaete community, a survey was conducted before, during, and after the rainy season. Comparing the environmental characteristics before and after the rainy season, the salinity and dissolved oxygen decreased, the sand content of sediment was significantly reduced, and silt increased. The number of species decreased sharply, and this change was more considerable at sites closer to the estuary. Loimia sp. and Pseudopotamilla sp., the dominant species before the rainy season, were not found after the rainy season. The massive freshwater inflow during the rainy season has been a tremendous stress on the benthic environment and significantly alters the species composition and distribution of benthic polychaetes.

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Section: Discussionsupporting

confidence: 61%

Effects of Freshwater Inflow during the Rainy Season on the Benthic Polychaete Community in the Geum River Estuary, South Korea

Kim,

Oh,

et al. 2024

Diversity

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“…The results point localizations with high organic matter content and low density and richness of lumbrinerid, nereidid, and spionid Polychaeta, comparing with other beaches in the region (Coelho- Costa 2007, Feres et al 2008, Cutrim 2017, Tavares-Cutrim et al 2018. The degree of sediment Wentworth (1992) classification and in the degree of selection from Folk and Ward (1957).…”

Section: Discussionmentioning

confidence: 84%

Spatial-Temporal Distribution of Polychaeta in Urbanized Sandy Beaches of Northeastern Brazil: Tools for Environmental Assessment

2021

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In the last years, the use of Polychaeta as indicators of marine pollution has intensified, due to the sensitivity of these organisms to environmental variations and their significant presence in quantitative and qualitative terms when compared to other benthic fauna organisms. We aimed to analyze the Polychaeta assemblage of two urbanized beaches in São Luís – Maranhão (Brazil), focusing on spatial-temporal distribution and look for the relation of the species sampled and possible contamination to indicate if they are suitable for environmental assessment. Sediment collection was carried out in the intertidal zone of both beaches in dry (September and November/2015) and rainy periods (March and May/2016). The samples were screened for extraction of the species, which were classified at the lowest possible taxonomic level. The samples revealed the following taxa: Lumbrineridae (Scoletoma tetraura), Nereididae (Laeonereis culveri) and Spionidae (Scolelepis sp.). The diversity and abundance of Polychaeta were greater on Caolho Beach. On these beaches, organic enrichment is not the determining variable in the structure of the Polychaeta assembly. Other studies are needed to improve the knowledge on other macrofauna species of the studied areas, comparing the richness among microhabitats and seasons, and thus elaborate conservation strategies for these ecosystems; and to test the hypothesis of the influence of tourism on this assemblage.

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“…Additionally, they are eaten by seabirds, fish, and crustaceans with commercial value. As a result of their abundance, diverse feeding habits, occupation of niches, and the relationship to different sediment types, they play an important role in the structure and functioning of benthic communities [8]. Also, polychaetes are active participants in a variety of marine ecological processes, including bioturbation, nutrient cycling, secondary production, and energy flow [9,10].…”

Section: Introductionmentioning

confidence: 99%

Polychaete Diversity and Functional Trait Composition in Subtropical Mangrove Ecosystems

Miri,

Seyfabadi,

Ghodrati Shojaei

et al. 2023

Diversity

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Polychaetes play a vital role in the structure and functioning of benthic communities in mangrove ecosystems. Nevertheless, our understanding of the diversity and functional structure of polychaete assemblages across different habitats in the mangrove ecosystems along the coast of the Persian Gulf and Gulf of Oman is limited. In this study, we investigated the species and trait composition of polychaetes and environmental variables, in vegetated and mudflat habitats of three subtropical mangroves. The results showed that Neanthes glandicincta was widely distributed across all regions and habitats. The three-factor ANOVA showed that the abundance and taxonomic diversity of polychaetes differed significantly between two habitats and three mangrove ecosystems. The abundance of polychaetes was observed to be higher in mud habitats than in vegetated habitats. There was a significant difference in species and trait composition between different regions and habitats. Vegetated habitats had higher proportions of crawler predatory species that are longer lived (3–5 years), with larger body size (80–100 mm), and are upward conveyors, whereas mudflat habitats had higher proportions of mobile (burrower) omnivore species that are moderately lived (1–3 years), with larger body size (>100 mm), and are biodiffusers. The three-factor ANOVA showed a significant difference in the community weighted mean (CWM) index between two habitats and three mangrove ecosystems. Thus, the species and trait composition of polychaetes depend on the structural complexity of their respective habitats. The DistLM analysis showed that total organic carbon content of the sediment was the main predictor variable influencing species composition, while silt/clay content and salinity were the main predictor variables influencing the traits’ composition. The results showed how the composition of traits and the structure of polychaete communities change in mangrove ecosystems, which can be used for future studies on conservation strategies for mangrove ecosystems throughout the world.

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Structure of a polychaete community in a mangrove in the northern coast of Brazil

Cited by 8 publications

References 27 publications

Effects of Freshwater Inflow during the Rainy Season on the Benthic Polychaete Community in the Geum River Estuary, South Korea

Effects of Freshwater Inflow during the Rainy Season on the Benthic Polychaete Community in the Geum River Estuary, South Korea

Spatial-Temporal Distribution of Polychaeta in Urbanized Sandy Beaches of Northeastern Brazil: Tools for Environmental Assessment

Polychaete Diversity and Functional Trait Composition in Subtropical Mangrove Ecosystems

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