Comparison between the macroinfauna of urbanized and protected beaches in Rio de Janeiro State, Brazil

Veloso, Valéria Gomes; Silva, Elen S.; Caetano, Carlos Henrique Soares; Cardoso, Ricardo S.

doi:10.1016/j.biocon.2005.09.027

Cited by 71 publications

(72 citation statements)

References 20 publications

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“…Similarly to the results obtained for E. braziliensis in Barra do Sul, Veloso et al, (2006;, on beaches of Rio de Janeiro, also found lower total densities of juveniles, males and females of this species on urbanized reflective beaches with higher numbers of users. In Barra da Tijuca, Veloso et al, (2011) highlight that human disturbance may be affecting the population of E. braziliensis: 1) directly, through human trampling and/or natural habitat jeopardizing, consequences of the great flux of visitors and urbanization, or 2) indirectly, by the isolation of individuals in the preserved stretch, located between environments subject to intense disturbance.…”

Section: Discussionsupporting

confidence: 82%

“…In Rio de Janeiro, Veloso et al (2006) also found significant differences in the macrobenthic communities of intermediate and reflective beaches, noting low abundances on urbanized beaches. Moreover, Jaramillo et al (1996) concluded that the presence of human beings produces no significant adverse effects on the macroinfauna of reflective beaches.…”

Section: Discussionmentioning

confidence: 86%

“…In the case of the genus Phoxocephalopsis, there is no other evidence regarding the vulnerability of these organisms in the face of human impacts; however, several authors have considered other species of amphipods such as Atlantorchestoidea brasiliensis and Talitrus saltator as bioindicators of anthropogenic and/or tourist activity (WESLAWSKI et al, 2000;NARDI et al, 2003;FANINI et al, 2005;VELOSO et al, 2006;UGOLINI et al, 2008;VELOSO et al, 2008VELOSO et al, , 2009. A. brasiliensis has several interesting features for an indicator species: direct development, distribution in intermediate and upper beach zones, surface burrowing in the sediment, easy visual identification and short life cycle (CARDOSO; .…”

Section: Discussionmentioning

confidence: 99%

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Human impact on the benthic macrofauna of two beach environments with different morphodynamic characteristics in southern Brazil

et al. 2012

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A B S T R A C TPollution, exploitation of resources, erosion and recreational activities produce the most common impacts that somehow alter the natural balance of beach ecosystems. The aim of this study was to compare the richness and abundance of the benthic macrofauna of two sectors, one non-urbanized and the other urbanized, on each of two morphodynamically different beaches. Sectors of each beach were analyzed taking into account morphodynamic, anthropogenic (recreational activities) and ecological aspects. Morphodynamically, one of the beaches presented sediment formed of fine sand with a gentle slope and morphodynamism with dissipative characteristics. The other was of sediment formed of medium sand with a steep profile and of intermediate to reflective morphodynamic characteristics. On both beaches during the summer, the urbanized sector was frequented by a greater number of users than the non-urbanized sector. On the beach with dissipative morphodynamism, negative relationships were observed between user abundance and the species Bledius bonariensis, Donax hanleyanus, Thoracophelia furcifera, Excirolana armata, Phoxocephalopsis sp. and Tholozodium rhombofrontalis. On the beach with intermediate to reflective morphodynamics, low abundances of Atlantorchestoidea brasiliensis and Excirolana braziliensis were recorded in the urbanized sector. Thus the results of this study suggest the use of certain species as indicators of human impacts on beach ecosystems. R E S U M OPoluição, exploração de recursos, erosão e atividades recreativas são os impactos mais comuns que de alguma forma alteram o equilíbrio natural do ecossistema praial. O objetivo deste trabalho foi comparar a riqueza e a abundância da macrofauna bentônica entre um setor não urbanizado e outro urbanizado de duas praias morfodinamicamente distintas. Os setores de cada praia foram analisados levando em consideração aspectos morfodinâmicos, antrópicos (atividades recreativas) e ecológicos. Morfodinamicamente, uma das praias apresentou sedimentos formados por areia fina, suave inclinação e morfodinamismo com características dissipativas. A outra praia apresentou sedimentos formados por areia média, perfil íngreme e características morfodinâmicas entre intermediárias a refletivas. Em ambas as praias, durante o verão, o setor urbanizado apresentou maior abundância de usuários do que o setor não urbanizado. Na praia com morfodinamismo dissipativo, relações negativas foram observadas entre a abundância de usuários e a dos organismos Bledius bonariensis, Donax hanleyanus, Thoracophelia furcifera, Excirolana armata, Phoxocephalopsis sp. e Tholozodium rhombofrontalis. Já na praia com morfodinamismo intermediário a refletivo, foram registradas baixas abundâncias de Atlantorchestoidea brasiliensis e Excirolana braziliensis no setor urbanizado. Assim, os resultados do presente estudo sugerem a utilização de algumas espécies como indicadores de impactos antrópicos nos ecossistemas praiais.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

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Human impact on the benthic macrofauna of two beach environments with different morphodynamic characteristics in southern Brazil

et al. 2012

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“…For instance, some studies illustrated an overall remarkable negative impact on supralittoral species as a result of human beach use (e.g. Fanini et al, 2005;Veloso et al, 2006Veloso et al, , 2008Ugolini et al, 2008) and shoreline modifications such as the construction of seawalls or beach nourishment actions (e.g. Bessa et al, 2013;Dugan and Hubbard, 2006;Fanini et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…In addition, on urbanised coasts (sensu Veloso et al, 2006), management practices such as nourishment and coastal armouring have been intensively used to counteract the erosive evolution of coasts, but the ecological implications of these actions are less considered Schlacher et al, 2006). Superimposed on these trends of coastal impacts is the predicted increase in the frequency and intensity of extreme natural phenomena (e.g.…”

Section: Introductionmentioning

confidence: 99%

Temporal changes in macrofauna as response indicator to potential human pressures on sandy beaches

Bessa

Gonçalves

Franco

et al. 2014

Ecological Indicators

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a b s t r a c tSandy beaches are natural dynamic ecosystems, which are becoming worldwide increasingly disturbed by intensive human direct use, coastal development and erosive evolution. In this study, we have examined whether ten years of potential increased human pressures have resulted in significant changes in the macrofaunal assemblages' structure and composition of two mesotidal sandy beaches (Cabedelourban beach, and Quiaios -rural beach) on the European Atlantic coast (Portugal). Seasonal macrofauna collections were performed at both beaches in two different periods, one in 1999-2000 and another in 2010-2011. The physical variables did not change significantly in both beaches throughout the studied periods, however, the urban beach was subject to an increase of human pressures (tourism and shoreline modifications) over the 10-years interval considered when compared with the rural beach. The univariate community descriptors (total density, species richness and diversity) did not differ significantly among periods for the rural beach. In contrast, temporal differences were found at the most urbanised beach, principally regarding the abundances of the amphipod Talitrus saltator and the isopod Tylos europaeus, two of the most abundant species at both beaches. PERMANOVA tests enhanced these temporal variations and the SIMPER analysis attributed to these species the main differences found between periods in this beach. Since the physical environment was similar in both periods, the ecological changes were most likely attributed to the increased human pressures observed at the urban beach. Nevertheless, this study highlights the need of further robust and effective impact assessments and long-term studies to better discern between natural and human induced changes on sandy beaches.

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Multiple transisthmian divergences, extensive cryptic diversity, occasional long‐distance dispersal, and biogeographic patterns in a marine coastal isopod with an amphi‐American distribution

Hurtado

Mateos

Mattos

et al. 2016

Ecology and Evolution

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Excirolana braziliensis is a coastal intertidal isopod with a broad distribution spanning the Atlantic and Pacific tropical and temperate coasts of the American continent. Two separate regional studies (one in Panama and one in Chile) revealed the presence of highly genetically divergent lineages, implying that this taxon constitutes a cryptic species complex. The relationships among the lineages found in these two different regions and in the rest of the distribution, however, remain unknown. To better understand the phylogeographic patterns of E. braziliensis, we conducted phylogenetic analyses of specimens from much of its entire range. We obtained DNA sequences for fragments of four mitochondrial genes (16S rDNA, 12S rDNA, COI, and Cytb) and also used publicly available sequences. We conducted maximum likelihood and Bayesian phylogenetic reconstruction methods. Phylogeographic patterns revealed the following: (1) new highly divergent lineages of E. braziliensis; (2) three instances of Atlantic–Pacific divergences, some of which appear to predate the closure of the Isthmus of Panama; (3) the distributional limit of highly divergent lineages found in Brazil coincides with the boundary between two major marine coastal provinces; (4) evidence of recent long‐distance dispersal in the Caribbean; and (5) populations in the Gulf of California have closer affinities with lineages further south in the Pacific, which contrasts with the closer affinity with the Caribbean reported for other intertidal organisms. The high levels of cryptic diversity detected also bring about challenges for the conservation of this isopod and its fragile environment, the sandy shores. Our findings underscore the importance of comprehensive geographic sampling for phylogeographic and taxonomical studies of broadly distributed putative species harboring extensive cryptic diversity.

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Comparison between the macroinfauna of urbanized and protected beaches in Rio de Janeiro State, Brazil

Cited by 71 publications

References 20 publications

Human impact on the benthic macrofauna of two beach environments with different morphodynamic characteristics in southern Brazil

Human impact on the benthic macrofauna of two beach environments with different morphodynamic characteristics in southern Brazil

Temporal changes in macrofauna as response indicator to potential human pressures on sandy beaches

Multiple transisthmian divergences, extensive cryptic diversity, occasional long‐distance dispersal, and biogeographic patterns in a marine coastal isopod with an amphi‐American distribution

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