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Santos,Douglas Henrique Cavalcanti dos; Silva-Cunha,Maria da Glória Gonçalves; Santiago,Marilene Felipe; Passavante,José Zanon de Oliveira. |
The phytoplankton community was studied around two artificial reefs (shipwrecks Servemar-X and Servemar-I), located off the coast of Pernambuco, northeastern Brazil, aiming to identify and thus, better describe these environments. Water samples were collected with Nansen bottle at three depths (surface, mid-column and bottom) for chlorophyll a analysis and salinity; temperature and water transparency were also measured. To collect phytoplankton samples, a diver using SCUBA equipment carried out phytoplankton hauls with a 20 µm net around the shipwrecks, about 1.5 m from the bottom for approximatly 3 minutes. Chlorophyll a concentrations at the bottom varied between 0.61 and 5.97 mg.m-3, with an average that indicates a mesotrophic environment. Temperature... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorophyll a; Artificial reef; Trichodesmium; Diving. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000400007 |
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Duclerc, Jean; Bertrand, Jacques. |
The laying out of an offshore site in the gulf of Lion has been realized by immersion of concrete structures in 1985. Two complementary studies have been conducted in order to estimate the impact of such artificiel reef. Gillnet fishery surveys have been done in the vicinity of the structures and also on a control site. Moreover the local profcssional fishery has been investigated for two periods of 16 months, one berore and one arter the reef immersion. The results of the gillnet surveys have already been submitted to publication and the present study displays the investigations concerning the local fishery. It has been shown by the gillnet fishing surveys that the artificial reef led in their very close vicinity to variations in marine species... |
Tipo: Text |
Palavras-chave: Récifs artificiels; Méditerranée; Pêcheries; Artificial reef; Mediterranean; Fisheries. |
Ano: 1993 |
URL: https://archimer.ifremer.fr/doc/00003/11416/7959.pdf |
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