Clam population dynamics as an indicator of beach urbanization impacts

Laitano, Marìa Victoria; Chiaradia, Nicolás M.; Núñez, Jesús

doi:10.1016/j.ecolind.2019.02.006

Cited by 10 publications

(7 citation statements)

References 39 publications

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“…These two factors combined show that recruits are possibly the size class most impacted by vehicular traffic, especially in the High Impact sector, where the disturbance was more evident. A similar result was found by Laitano et al (2019) on the Argentine coast, showing that places of (Neves et al 2007, Silva et al 2008. Furthermore, the presence of juveniles, even at low densities, in the post-summer period in these sectors may indicate the relative success in the development of these species in less impacted sectors.…”

Section: Discussionsupporting

confidence: 76%

“…For example, ghost crabs, sandhoppers, cirolanids, polychaetas, nematodes and insects showed lower densities on urbanized beaches (Bessa et al 2014, Costa & Zalmon 2019, Santos et al 2021, Vieira et al 2012. Additionally, the abundance of bivalves decreased on urbanized beaches on the Argentine and Brazilian coastlines (Herrmann et al 2009, Laitano et al 2019, Vieira et al 2012.…”

Section: Discussionmentioning

confidence: 96%

“…These species were chosen because they have high densities and biomass on southern Brazilian beaches, representing an important link between phytoplankton and higher levels of the food chain (Pinotti et al 2014). Furthermore, bivalves have been monitored in studies of recreational impacts on beaches, such as the effects of harvesting and trampling, and the vehicle traffic (Defeo & De Alava 1995, Laitano et al 2019, Schlacher et al 2008b, Vieira et al 2012, since they have a wide distribution range, well-known biology and low mobility, and are considered good bioindicators of impact in these ecosystems (Costa et al 2020).…”

Section: Introductionmentioning

confidence: 99%

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The bivalves Amarilladesma mactroides and Donax hanleyanus as bioindicators of the impact of vehicles on Cassino Beach, southern Brazil

Bom

Colling

2022

An. Acad. Bras. Ciênc.

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Sandy beaches are the main recreational ecosystems of the world, enabling high ecological impacts, especially on the benthic macrofauna, which inhabit the sandy matrix and have a low capacity of locomotion. Cassino Beach, located in southern Brazil, has intense vehicle traffi c during the summer, so the purpose of this study was to evaluate the impact of vehicles on the key species Amarilladesma mactroides and Donax hanleyanus. For this purpose, samplings were performed in three sectors of this beach (High Impact, Moderate Impact and Control) during six periods of the year. The results showed lower densities of both bivalves in the High Impact sector than in to the other sectors in all periods, except in fi rst summer sampling, and a predominance of recruits throughout the study. Thus, it suggests that the two species were infl uenced by the intense vehicle traffi c, especially in the most impacted sector. In this way, we conclude that these bivalves could be used as good indicators of pulse disturbance by vehicle traffi c on this beach and the results can support in management plans regarding the use of Cassino Beach, considering ecological aspects of this ecosystem in addition to economic and cultural demands.

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Section: Discussionsupporting

confidence: 76%

Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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The bivalves Amarilladesma mactroides and Donax hanleyanus as bioindicators of the impact of vehicles on Cassino Beach, southern Brazil

Bom

Colling

2022

An. Acad. Bras. Ciênc.

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“…Diversos estudos têm demonstrado que o crescente grau de urbanização e intensidade de uso têm impactado negativamente os ambientes de praias arenosas no mundo inteiro, resultando em mudanças na estrutura da comunidade e redução nas densidades das espécies (Barros, 2001;Veloso et al, 2006;Ugolini et al, 2008;Defeo et al, 2009;Schlacher & Thompson, 2012;González et al, 2014;Schlacher et al, 2016;Laitano et al, 2019;Orlando et al, 2020). Nesse sentido, é provável que tais diferenças observadas no número de espécies e na densidade da macrofauna possam ser reflexos dos efeitos desse gradiente de urbanização e intensidade de uso ao longo desse arco praial.…”

Section: Discussionunclassified

Macroinfauna Intermareal Das Praias Arenosas Do Litoral De Aracaju, Sergipe, Região Nordeste Do Brasil = Intertidal Macroinfauna of the Aracaju Sandy Beaches, Sergipe, Northeastern Brazil

Rosa

2021

Bol. Lab. Hidrobiol.

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Praias arenosas são ambientes altamente dinâmicos que abrigam uma rica fauna adaptada às condições de instabilidade dos sedimentos. Nesse estudo, a estrutura e a composição da macrofauna de quatro praias arenosas do litoral de Aracaju (Sergipe, NE do Brasil) foram analisadas. As praias foram classificadas, em sua maioria, como dissipativas. O número total de espécies variou entre 14 e 17 espécies, enquanto que a densidade média total variou entre 65,50±9,29 e 169,50±30,52 indivíduos/m², sendo o bivalve Donax gemmula e os poliquetas Hemipodia californiensis e Orbinia sp. as espécies mais abundantes. Diferenças observadas na macrofauna provavelmente refletem os diferentes graus de urbanização e/ou intensidade de uso das praias analisadas. Quando comparado com outras praias do litoral sudeste e sul do Brasil, os valores de riqueza de espécies foram semelhantes, no entanto, os valores de densidade foram extremamente baixos, corroborando com o padrão latitudinal o qual prediz uma redução na abundância das espécies de zonas temperadas em direção à zona tropical.ABSTRACTSandy beaches are highly dynamics environments which harbor a rich fauna adapted to sediment instability. In this study, the number of species and the density of the intertidal macrofauna of the four sandy beaches of the Aracaju coast (Sergipe, NE Brazil) were analyzed. The beaches were classified as dissipative. The number of species ranged from 14 to 17 species, whereas total density ranged from 65.50±9.29 to 169.50±30.52 individuals/m². The bivalve Donax gemmula and the polychaete Hemipodia californiensis and Orbinia sp. were the most abundant species. Observed differences in the intertidal macrofauna probably reflect the different urbanization levels and/or intensity of use of the analyzed beaches. When compared to others beaches of the southern/south region of the Brazil, the number of species values were quite similar. However, density values were extremely lower, corroborating with previous latitudinal patterns, where decrease in the macrofauna abundance from temperate to tropical beaches are expected.

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“…However, previous studies have demonstrated that macrobenthic species are effective indicators for assessing the impact of human activities on beach environments. For example, in Brazil, clams can serve as indicators to evaluate the urbanisation of beaches [59]; in Ghana, ghost crabs are effective indicators for assessing the impact of beach sand mining [60]; and in Italy, Talitrus saltator can serve as an indicator of the effects of human trampling on beaches [61]. However, these studies necessitate long-term investigations and are difficult to generalise due to their broad focus on specific species.…”

Section: Shortcomings Of the Studymentioning

confidence: 99%

Using Benthic Indices to Assess the Ecological Quality of Sandy Beaches and the Impact of Urbanisation on Sandy Beach Ecosystems

Liang,

Shu,

Huang

et al. 2024

JMSE

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As the global population continues to grow, sandy beaches, one of the most valuable ecosystems, have been widely impacted by human activities. Therefore, to develop policies for the conservation and management of sandy beaches, the impact of human activities on sandy beaches must be accurately assessed. We used seven benthic indices to evaluate the ecological quality of sandy beaches in Anmyeon Island, Korea. However, these seven indices were found to either over- or underestimate their ecological quality. Moreover, despite incorporating beach morphodynamics into our study, these indices did not respond to the pressure of urbanisation on beaches. Given the suboptimal performance of benthic indices in reflecting the actual state of Korean beaches, our study indicates that beaches without human interference but with the same morphodynamics must be selected as control groups to further explore the effectiveness of these indices. This is critical for advancing our conservation efforts and managing sandy beach ecosystems under increasing human influence.

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Clam population dynamics as an indicator of beach urbanization impacts

Cited by 10 publications

References 39 publications

The bivalves Amarilladesma mactroides and Donax hanleyanus as bioindicators of the impact of vehicles on Cassino Beach, southern Brazil

The bivalves Amarilladesma mactroides and Donax hanleyanus as bioindicators of the impact of vehicles on Cassino Beach, southern Brazil

Macroinfauna Intermareal Das Praias Arenosas Do Litoral De Aracaju, Sergipe, Região Nordeste Do Brasil = Intertidal Macroinfauna of the Aracaju Sandy Beaches, Sergipe, Northeastern Brazil

Using Benthic Indices to Assess the Ecological Quality of Sandy Beaches and the Impact of Urbanisation on Sandy Beach Ecosystems

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