Contrasting Effects of Two Burrowing Crabs (Chasmagnathus granulata and Uca uruguayensis) on Sediment Composition and Transport in Estuarine Environments

Botto, Florencia; Iribarne, Oscar

doi:10.1006/ecss.2000.0642

Cited by 213 publications

(128 citation statements)

References 37 publications

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“…It occurs in the West Atlantic Ocean in Brazil (from Rio de Janeiro to Rio Grande do Sul), Uruguay, and Argentina (MELO 1996). This crab species moves great amounts of sediment for feeding purposes and gallery maintenance, influencing substrate quality, penetrability and transportation (BOTTO & IRIBARNE 2000).…”

mentioning

confidence: 99%

Population biology of the burrowing crab Neohelice granulata, (Crustacea: Decapoda: Varunidae) from a tropical mangrove in Brazil

Gregati¹,

Negreiros-Fransozo²

2009

Zoologia (Curitiba, Impr.)

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ABSTRACT. The population biology of the burrowing crab Neohelice granulata (Dana, 1851) from a mangrove in Jabaquara Beach, Paraty, state of Rio de Janeiro, Brazil (23º13'04"S and 44º42'47"W), was studied with respect to the following traits: size-frequency distribution, recruitment, reproductive period, fecundity, and sex ratio. Specimens were sampled monthly from April, 2003 to March, 2004, at the river margins during low tide periods. Size, sex, presence of eggs, and stage of the female gonad were recorded. Ovigerous females had their eggs removed and counted. The reproductive period was continuous and the highest frequency of ovigerous females was recorded in the fall and winter. Mature gonads were found throughout the year and recruitment was continuous but more intense during the summer. The fecundity of N. granulata (30028.3 ± 10861.2 eggs) was high in comparison to studies in other localities. In general, the proportion of males was similar to that of females (1:0.92); however, males were predominant in the fall (1:0.77) and winter (1:0.75). All the information available so far on the reproduction of N. granulata involves populations from subtropical salt marshes; therefore, comparative studies including other habitats, such as mangrove forests, are needed to further understand the environmental influences on the population and reproductive biology of semiterrestrial crabs.

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confidence: 99%

Population biology of the burrowing crab Neohelice granulata, (Crustacea: Decapoda: Varunidae) from a tropical mangrove in Brazil

Gregati¹,

Negreiros-Fransozo²

2009

Zoologia (Curitiba, Impr.)

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“…NOx concentrations were the highest in this layer reaching 4 μmol·L −1 ( Figure 6). In addition, crab burrows, by increasing the surface area of sediment available for diffusive oxygen exchanges, are privileged sites for nitrification [39,57,58]. Within the vegetated stand, i.e., Avicennia and Rhizophora, NH4 + and NOX concentrations in pore-waters were very low at all depths ( Figure 5), probably because they were subject to plant uptake as soon as they were produced.…”

Section: Distribution and Speciation Of Nitrogen Species Along The Mamentioning

confidence: 99%

“…Beneath Rhizophora, redox values decreased rapidly with depth, from 213.9 ± 13 to −92 ± 18 mV. Salt-flat sediments presented the less reducing conditions of the three vegetation stands because of the short tidal inundation associated with desiccation mud cracks that allowed inflow of atmospheric oxygen, and of the presence of crab burrows, which can promote oxygen penetration ( [39,40], Figure 2). The higher OM concentrations in Avicennia sediments led to lower redox values compare to salt-flat (Figure 2).…”

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Concentrations and Fractionation of Carbon, Iron, Sulfur, Nitrogen and Phosphorus in Mangrove Sediments Along an Intertidal Gradient (Semi-Arid Climate, New Caledonia)

Deborde

Marchand

Molnar

et al. 2015

JMSE

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Abstract:In mangrove ecosystems, strong reciprocal interactions exist between plant and substrate. Under semi-arid climate, Rhizophora spp. are usually predominant, colonizing the seashore, and Avicennia marina develops at the edge of salt-flats, which is the highest zone in the intertidal range. Along this zonation, distribution and speciation of C, Fe, S, N, and P in sediments and pore-waters were investigated. From the land-side to the sea-side of the mangrove, sediments were characterized by I/ increase in: (i) water content; (ii) TOC; (iii) mangrove-derived OM; II/ and decrease in: (i) salinity; (ii) redox; (iii) pH; (iv) solid Fe and solid P. Beneath Avicennia and Rhizophora, TS accumulated at depth, probably as a result of reduction of iron oxides and sulfate. The loss of total Fe observed towards the sea-side may be related to sulfur oxidation and to more intense tidal flushing of dissolved components. Except the organic forms, dissolved N and P concentrations were very low OPEN ACCESSJ. Mar. Sci. Eng. 2015, 3 53beneath Avicennia and Rhizophora stands, probably as a result of their uptake by the root systems. However, in the unvegetated salt-flat, NH4 + can accumulate in organic rich and anoxic layers. This study shows: (i) the evolution of mangrove sediment biogeochemistry along the intertidal zone as a result of the different duration of tidal inundation and organic enrichment; and (ii) the strong links between the distribution and speciation of the different elements.

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“…A. Pinheiro exuberância, composição e desenvolvimento arbóreo dos manguezais, que causam alterações subsequentes à densidade populacional dos caranguejos (Matsumasa et al, 1992;Nomann & Pennings, 1998;Amouroux & Tavares, 2005), gerando condições específicas à ocorrência de determinadas espécies desses crustá-ceos (Morrisey et al, 2003). A estrutura populacional de alguns caranguejos também pode ser alterada em função da granulometria e química do sedimento (Ribeiro et al, 2005), podendo se tornar mais arenoso pelo aumento da densidade de caranguejos, ficando, assim, mais suscetível à erosão (Botto & Iribarne, 2000).…”

Section: Introductionunclassified

Protocolos para o monitoramento de habitats bentônicos costeiros - Rede de Monitoramento de Habitat Bentônicos Costeiros - ReBentos

Turra¹,

Denadai²

2015

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Contrasting Effects of Two Burrowing Crabs (Chasmagnathus granulata and Uca uruguayensis) on Sediment Composition and Transport in Estuarine Environments

Cited by 213 publications

References 37 publications

Population biology of the burrowing crab Neohelice granulata, (Crustacea: Decapoda: Varunidae) from a tropical mangrove in Brazil

Population biology of the burrowing crab Neohelice granulata, (Crustacea: Decapoda: Varunidae) from a tropical mangrove in Brazil

Concentrations and Fractionation of Carbon, Iron, Sulfur, Nitrogen and Phosphorus in Mangrove Sediments Along an Intertidal Gradient (Semi-Arid Climate, New Caledonia)

Protocolos para o monitoramento de habitats bentônicos costeiros - Rede de Monitoramento de Habitat Bentônicos Costeiros - ReBentos

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