Variação temporal da macrofauna bentônica sublitoral da praia da Urca (RJ) após a ocorrência de ressacas

Sola, Maria Claudia Rayol; Paiva, Paulo Cesar

doi:10.1590/s1413-77392001000100012

Cited by 7 publications

(7 citation statements)

References 6 publications

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“…Nonetheless, nearshore area as a whole demonstrated a rather temporal stability in community structure. Similar results were observed in exposed shallow water worldwide [102][103][104].…”

Section: Supplementary Materialssupporting

confidence: 88%

Hydrodynamic Conditions Effects on Soft-Bottom Subtidal Nearshore Benthic Community Structure and Distribution

Foulquier

Baills²,

Arraud³

et al. 2020

Journal of Marine Sciences

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This study assesses the impacts of wave action and freshwater outflow on soft-bottom benthic macrofauna spatial distribution and temporal stability along the highly exposed French Basque coast. Sediment characteristics and macrofauna abundance have been seasonally investigated during two years for nine stations located at the same (6 m) depth and spread over three subtidal sites showing distinct exposure levels. Wave climate has been determined through an operational numerical model. A total of 121 taxa were recorded, gathered in three main faunal assemblages, as revealed by classification and ordination methods. Non-parametric multivariate multiple regression (distance-based linear model) showed that the variations in macrofaunal distribution can be explained by hydrodynamic conditions. Wave exposure strongly linked to estuarine inputs were the most relevant abiotic factors influencing distributional patterns and functional structure as described by biological traits analysis. Despite the influence of these abiotic variables affecting sedimentary dynamics, seasonal stability was observed in macrobenthic assemblages composition suggesting an ability to recover from natural disturbances such as (e.g.) winter storms. In this way, these results provide baseline knowledge for future ecosystem and resource management in shallow subtidal areas strongly exposed to swell and freshwater outflow where soft-bottom macrozoobenthic communities are less frequently studied.

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“…Nonetheless, nearshore area as a whole demonstrated a rather temporal stability in community structure. Similar results were observed in exposed shallow water worldwide [102][103][104].…”

Section: Supplementary Materialssupporting

confidence: 88%

Hydrodynamic Conditions Effects on Soft-Bottom Subtidal Nearshore Benthic Community Structure and Distribution

Foulquier

Baills²,

Arraud³

et al. 2020

Journal of Marine Sciences

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“…These effects may promote erosion of the coastline, flooding by storm surge, changes in tidal amplitude, and changes in sedimentary patterns (CALLIARI; KLEIN, 1993;CALLIARI et al, 1998;MUEHE, 2006). These impacts may result in changes to the biota and morphodynamics of beaches in the short and long term as a result of changes in the composition of the sediment, slope, area available for occupation by the organisms, and, in extreme conditions, the loss of intertidal and backshore areas (SOLA; PAIVA, 2001;GALLUCI & NETO, 2004;NEGRELLO FILHO, 2005;COCHOA et al, 2006;ALVES;PEZZUTO, 2009;DEFEO et al, 2009). Variations in rainfall distribution may modify the solid discharge (sediment) from rivers and the volume of fresh water that reaches the oceans, also contributing to changes in the morphodynamics of beaches and the salinity of seawater.…”

Section: Impactsmentioning

confidence: 99%

Brazilian sandy beaches: characteristics, ecosystem services, impacts, knowledge and priorities

et al. 2016

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Sandy beaches constitute a key ecosystem and provide socioeconomic goods and services, thereby playing an important role in the maintenance of human populations and in biodiversity conservation. Despite the ecological and social importance of these ecosytems, Brazilian sandy beaches are significantly impacted by human interference, chemical and organic pollution and tourism, as well as global climate change. These factors drive the need to better understand the environmental change and its consequences for biota. To promote the implementation of integrated studies to detect the effects of regional and global environmental change on beaches and on other benthic habitats of the Brazilian coast, Brazilian marine researchers have established The Coastal Benthic Habitats Monitoring Network (ReBentos). In order to provide input for sample planning by ReBentos, we have conducted an intensive review of the studies conducted on Brazilian beaches and summarized the current knowledge about this environment. In this paper, we present the results of this review and describe the physical, biological and socioeconomics features of Brazilian beaches. We have used these results, our personal experience and worldwide literature to identify research projects that should be prioritized in the assessment of regional and global change on Brazilian sandy beaches. We trust that this paper will provide insights for future studies and represent a significant step towards the conservation of Brazilian beaches and their biodiversity.

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“…This type of study has been conducted by Crocker (1968) and Saloman and Naughton (1977), who examined the effect of hurricanes on the macrofauna of sandy beaches on the east coast of the United States. In Brazil, the only studies dealing with this subject were undertaken by Cochôa et al (2006), who investigated the effect of a meteorological front on the distribution of macrobenthos on a dissipative beach in Paraná, by Sola and Paiva (2001) who evaluated the effect of two storm surges on the nearshore macrofauna of a sandy beach in Rio de Janeiro, and by Gallucci and Netto (2004) who examined the effects of two cold fronts on the macrofauna and meiofauna at a shallow sublittoral site off a sheltered beach in Santa Catarina. However, no studies to date have investigated the effect of the same high energy event on beaches with different morphodynamic states.…”

Section: Introductionmentioning

confidence: 99%

Effect of cold fronts on the benthic macrofauna of exposed sandy beaches with contrasting morphodynamics

Alves

Pezzuto

2009

Braz. j. oceanogr.

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The aim of this study was to determine the short-term environmental changes caused by the simultaneous passage of a high energy event on two sandy beaches with different morphodynamic states and their influence on the richness, abundance and distribution of the benthic macrofauna. Two microtidal exposed sandy beaches with contrasting morphodynamics were simultaneously sampled before, during and after the passage of two cold fronts in Santa Catarina. The reflective beach showed a higher susceptibility to the increase in wave energy produced by the passage of cold fronts and was characterized by rapid and intense erosive processes in addition to a capacity for rapid restoration of the beach profile. As regards the dissipative beach, erosive processes operated more slowly and progressively, and it was characterized further by a reduced capacity for the recovery of its sub-aerial profile. Although the intensity of the environmental changes was distinct as between the morphodynamic extremes, changes in the composition, richness and abundance of macrobenthos induced by cold fronts were not evident for either of the beaches studied. On the other hand, alterations in the distribution pattern of the macrofauna were observed on the two beaches and were related to variations in sea level, position of the swash zone and moisture gradient, suggesting that short-term accommodations in the spatial structure of the macrobenthos occur in response to changes in environmental conditions in accordance with the temporal dynamics characteristic of each morphodynamic state.
Com o objetivo de avaliar as alterações ambientais de curtoprazo causadas pela passagem de um mesmo evento de alta energia em praias com diferentes estágios morfodinâmicos e sua influência na riqueza, abundância e distribuição do macrobentos, duas praias arenosas expostas e pertencentes aos extremos morfodinâmicos foram simultaneamente amostradas antes, durante e após a passagem de duas frentes frias em Santa Catarina. A praia refletiva apresentou maior suscetibilidade ao incremento de onda causado pelos eventos e caracterizou-se por rápidos e intensos processos erosivos, além de apresentar uma rápida capacidade de restauração do perfil praial. Por outro lado, os processos erosivos operaram de forma lenta e progressiva na porção subaérea da praia dissipativa, que caracterizou-se por uma reduzida capacidade de recuperação do perfil . Embora a intensidade das alterações ambientais tenha sido distinta entre os extremos morfodinâmicos, mudanças na composição, riqueza e abundância do macrobentos, induzidos pelas frentes frias, não foram evidentes para nenhuma das praias estudadas. Por outro lado, alterações na distribuição da macrofauna foram verificadas nas duas praias e estiveram relacionadas com as variações do nível do mar, do posicionamento da zona de espraiamento e dos gradientes de umidade daí decorrentes, sugerindo que acomodações de curto prazo na estrutura espacial do macrobentos ocorrem como resposta às alterações nas condições ambientais de acordo com a di...

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Variação temporal da macrofauna bentônica sublitoral da praia da Urca (RJ) após a ocorrência de ressacas

Cited by 7 publications

References 6 publications

Hydrodynamic Conditions Effects on Soft-Bottom Subtidal Nearshore Benthic Community Structure and Distribution

Hydrodynamic Conditions Effects on Soft-Bottom Subtidal Nearshore Benthic Community Structure and Distribution

Brazilian sandy beaches: characteristics, ecosystem services, impacts, knowledge and priorities

Effect of cold fronts on the benthic macrofauna of exposed sandy beaches with contrasting morphodynamics

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