2016
DOI: 10.1590/1809-4392201600493
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Abstract: The diversity and distribution of molluscs from the Amazon Coast of Maranhão State, Brazil, are poorly understood. The aim of this study was to investigate how molluscs in two mangrove creeks (Buenos Aires and Tronco) at the São Marcos Bay, coast of the Maranhão State, respond to spatial and temporal variations in the environment. Sampling was performed in the intertidal area along three zones established using a straight line transect of 100 m. Abiotic variables of water and sediment were measured at each cre… Show more

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Cited by 14 publications
(11 citation statements)
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“…The DO results present values below to the CONAMA Resolution Nº 357 (2005) for brackish water quality conditions, with the concentration should be higher than 5.0 mg L -1 . Low DO contents is a direct result to the decomposition of organic matter by aerobic bacteria (Sakamaki et al, 2006), which the great mangrove forest of the region (Rodrigues et al, 2016) acts as the main source of organic matter to the water column. These DO values may also be a natural condition of the estuarine ecology (Calazans, 2011), such as in estuaries with high temperature and constant tidal variation, as observed in the present study (Azevedo et al, 2008).…”
Section: Discussionmentioning
confidence: 99%
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“…The DO results present values below to the CONAMA Resolution Nº 357 (2005) for brackish water quality conditions, with the concentration should be higher than 5.0 mg L -1 . Low DO contents is a direct result to the decomposition of organic matter by aerobic bacteria (Sakamaki et al, 2006), which the great mangrove forest of the region (Rodrigues et al, 2016) acts as the main source of organic matter to the water column. These DO values may also be a natural condition of the estuarine ecology (Calazans, 2011), such as in estuaries with high temperature and constant tidal variation, as observed in the present study (Azevedo et al, 2008).…”
Section: Discussionmentioning
confidence: 99%
“…SMB has a central channel with depths up to 90 m and a width of ∼55 km, which narrows to 1.5 km at the intersection of Pindaré and Mearim rivers. It has the biggest mangrove area of the country with 5,414.31 km2 (Cavalcanti et al, 2018;Rodrigues et al, 2016). It is characterized by semi-diurnal tidal, with tidal current speeds up to 2.5 m s-1 that influences areas up to 150 km from the coast (Chagas, 2013;De Morais, 1977).…”
Section: Environmental Settingmentioning
confidence: 99%
“…Molluscs were caught by hand and counted within 1 × 1 m 2 plots placed at three zones established using a straight line transect of 100 m perpendicular to the water shoreline in the mangrove vegetated area as mentioned by [25]. Arboreal species were also harvested by hand from roots and stems of mangrove trees [26].…”
Section: Molluscs Samplingmentioning
confidence: 99%
“…Nessa região também existem diferentes populações de organismos aquáticos, tais como crustáceos decápodes (SOUSA et al, 2015) e moluscos de manguezal (RODRIGUES, 2016). Além disso, os peixes constituem uma biodiversidade importante economicamente, como a pescada amarela (Cynoscion acoupa), conforme Almeida et al (2016), os bagres de Sciades herzbergii e Bagre bagre, segundo Sousa; Almeida e Carvalho-Neta (2013), dentre outros.…”
Section: Introductionunclassified