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Registros recuperados: 11
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Benthic Community zonation in a breakwater on the north coast of the state of Rio de Janeiro, Brazil BABT
Masi,Bruno Pereira; Macedo,Isabela Maria; Zalmon,Ilana Rosental.
The present study presents the vertical zonation pattern of the intertidal benthic organisms on granitic boulders in the Farol de São Tomé beach (22º02'S, 41º03'W), Rio de Janeiro State. Four sampling profiles using 20 x 20 cm quadrats through a photo quadrat technique revealed four horizontal bands: (1) Littoral Fringe characterized by empty space and Littorina; (2) Upper eulittoral mainly occupied by Chthamalus and bare rock; (3) Lower eulittoral characterized by Chthamalus, Phragmatopoma, Ulva and Centroceras; and (4) Sublittoral Fringe characterized by Ulva, Phragmatopoma and Hypnea. The high variability in the relative abundance of the dominant species among the profiles may be attributed to the high topographic irregularity, reflecting in different...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Intertidal zonation; Rocky shore; Benthic community; North coast of Rio de Janeiro.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000300016
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Checklist of tidepool fishes from Jericoacoara National Park, southwestern Atlantic, with additional ecological information Biota Neotropica
Machado,Fabiola S.; Macieira,Raphael M.; Zuluaga Gómez,Mario A.; Costa,Alexandra F.; Mesquita,Esther M.C.; Giarrizzo,Tommaso.
Ichthyofauna from 29 tidepools in Jericoacoara National Park (Ceará State, Brazil) was sampled. A total of 733 fishes, comprising 16 species belonging to 12 families, was collected. The three most abundant species were the frillfin goby Bathygobius soporator, the sergeant-majorAbudefduf saxatilis and the molly miller Scartella cristata. An invasive species from the Indo-Pacific, the Muzzled blenny Omobranchus punctatus, was also recorded. The known geographic distribution of the blenny Hypleurochilus fissicornis was extended approximately 2,500 km northward. These findings highlight the lack of knowledge of the rocky intertidal ecosystems along the Brazilian coast, an area that needs more sampling effort and ecological data.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rockpools; Reef; Intertidal zone; Fish community; Rocky shore.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000100205
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Co-occurring morphologically distinct algae support a diverse associated fauna in the intertidal zone of Araçá Bay, Brazil Biota Neotropica
Vieira,Edson A.; Filgueiras,Heloísa Romeu; Bueno,Marília; Leite,Fosca Pedini Pereira; Dias,Gustavo Muniz.
Abstract Species diversity is regulated by historical, neutral and niche processes, with species tolerance, dispersal and productivity guiding diversity at larger scales, while habitat heterogeneity and biotic interactions acts in smaller scales. In rocky shores, several organisms provide secondary substrates for mobile fauna, with macroalgae being the most abundant and diverse ones. The patchiness promoted by different macroalgae hosts enhances small-scale heterogeneity and may increase and maintain the diversity of the mobile organisms, since there is a close relationship between the associated fauna and its hosts. In this study we selected three morphologically different macroalgae that coexist in the same rocky shore height in the Araçá Bay, an area...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rocky shore; Phytal; Peracarids; Structural complexity; Spatial heterogeneity.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000100207
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Crustacea decapoda da praia rochosa da Ilha do Farol, Matinhos, Paraná. I: distribuição temporal de densidade das populações Zoologia
Masunari,Setuko; Oliveira,Edinalva; Kowalczuk,Vânia Graciele Lezan.
A study of the temporal distribution of the decapod populations from a rocky shore at Farol Isle, Matinhos, State of Paraná, Brazil (25o51'S e48o32'W) was carried out. The rocky shore is 13m wide when the tidal level is zero meter and about 8o inclination. In the supralittoral, the rocky basins is mostly covered by a layer of litter coming from the terrestrial environment. In the midlittoral and upper infralittoral, the rocky slope is overlayed by boulders and pebbles and they constitute a highly complex environment of crevices, holes and concavities; the underlayer pebbles are embedded in sand, gravel and mud. In the infralittoral fringe, macrocospic algae grow as a continuous belt. Eight samples were taken by hand, monthly, from May-90 to April-91: two...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Temporal density distribution; Decapod crustacean; Rocky shore; Island of Farol; Paraná; Brazil.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000100020
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Crustacea decapoda da praia rochosa da Ilha do Farol, Matinhos, Paraná: II. Distribuição espacial de densidade das populações Zoologia
Masunari,Setuko; Dubiaski-Silva,Janete.
Decapod crustaceans from rocky shore at Farol Isle, Matinhos, Paraná, Brazil. II. Spatial distribution of population densities. A study of the spatial distribution of the decapod populations from a rocky shore at Farol Isle, Matinhos, State of Paraná, Brazil (25º51'S, 48º32'W) was canied out. In the supralittoral the rocky surface is covered partially by a layer of litter coming from the terrestrial habitats; in the midlittoral boulders and pebbles cover the rocky basin and in the infralittoral, there is a belt of seaweeds. A total of 8 samples were taken by hand, two from each of the following levels: supralittoral (emersion time 8-12 hours), upper midlittoral (4-8), lower midlittoral (0-4) and limit between midlittoral and infralittoral, monthly, from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Decapod crustacean; Spatial density distribution; Zonation; Rocky shore; Farol Isle.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000300010
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Estrutura populacional de Armases angustipes (Dana) (Decapoda, Brachyura, Grapsidae) na Ilha do Farol, Matinhos, Paraná Zoologia
Kowalczuk,Vânia G.L.; Masunari,Setuko.
Annual fluetuation of densities and population strueture of Armases angustipes (Dana, 1852) from a rocky shore at Farol Island, Matinhos, Paraná, Brazil (25º51'S and 48º32'W) were studied. The population strueture was treated in the following aspects: sexual proportion, dial intensity of activities, size composition and its fluetuation, and general condition of the crabs. The collections were made monthly, from January to December 1991. The samples were obtained handly, in the morning and at night, at the supratidal zone during low tides. There were caught 1,139 crabs, among which 34 were juveniles, 544 males, 555 females and 4 ovigerous females. Population density was highest in April (19.56 ind.m"² ) and in October (23.86 ind.m"² ). The sexual proportion...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Armases angustipes; Crabs; Population strueture; Rocky shore; Matinhos; Brazil.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000100001
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Influence of Palythoa caribaeorum (Anthozoa, Cnidaria) zonation on site-attached reef fishes Anais da ABC (AABC)
Mendonça-Neto,José P.; Ferreira,Carlos E.L.; Chaves,Laís C.T.; Pereira,Renato C..
This work aimed to test the influence of Palythoa caribeorum, a widely distributed zoanthid in the Atlantic, on site-attached reef fish in a subtropical rocky shore. Density, richness and vertical distribution of reef fish inside (ID) and outside (OD) previously chosen P. caribaeorum dominance patches were compared through stationary visual censuses along three different periods. Fishes were grouped in different trophic guilds to evidence differences in resources uses in both treatments. A complexity index was estimated by the chain link method and percentage covering of benthic organisms was obtained analyzing random points from replicated photo-quadrats. We observed thirty-eight species of fishes, belonging to twenty-five families. Reef fish communities...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Benthic covering; Habitat complexity; Reef fish community; Rocky shore; Zoanthid.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652008000300010
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Intérêt biogéographique de la côte basque rocheuse ArchiMer
De Casamajor, Marie-noelle; Lalanne, Yann.
During recent decades, works on rocky shore biodiversity have been multiplied in the southern part of the Bay of Biscay and more precisely on intertidal and subtidal area were communities present a great interest. Necessity of conservation of coastal habitats and their communities and a growing pressure on coastal environments explain awareness of services provided by these ecosystems. Those communities are very sensitive to water quality change. Moreover, since the beginning of the XXI century various European directives require a good ecological status of coastal waters and conservation of their communities : Water Framework Directive (WFD), Marine Strategy Framework Directive (MSFD) and conservation of habitats with Directive Habitat Fauna and Flora...
Tipo: Text Palavras-chave: Biodiversité; Substrats rocheux; Côte basque; Changement climatique; Golfe de Gascogne.; Biodiversity; Rocky shore; Basque coast; Climate change; Bay of Biscay..
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00347/45781/45426.pdf
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Recolonization of experimental gaps by the mussels Brachidontes darwinianus and B. solisianus in a subtropical rocky shore BABT
Tanaka,Marcel Okamoto.
In this study, the recolonization speed of the mussels Brachidontes darwinianus and B. solisianus was compared to evaluate their responses to gaps opened by disturbances in the rocky shore. B. darwinianus was much faster than B. solisianus, rapidly closing gaps in the mussel bed. When they co-occurred, distribution patterns of these species were related not only with distinct physiological tolerances but also with responses to disturbance. B. darwinianus was more tolerant to low salinities, dominated estuarine zones generally occuring lower in the midlittoral, and presented a faster response to opened gaps.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bivalve; Intertidal; Rocky shore; Zonation; Mytilidae.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000100015
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Recruitment and colonization of colonial ascidians (Tunicata: Ascidiacea) on intertidal rocks in Northeastern Brazil Iheringia, Sér. Zool.
Gama,Petrônio Bezerra; Leonel,Rosa M. V.; Hernández,Malva I. M.; Mothes,Beatriz.
Recruitment and colonization of colonial ascidians, starting on natural scraped substratum, was observed throughout one year, in quadrats marked on sea- and continental-rock faces in the sublittoral fringe of an exposed beach in the Northeast of Brazil. The species of the Didemnidae, Didemnum duplicatum Monniot, 1983, D. psammathodes Sluiter, 1895, and Polysyncraton amethysteum Van Name, 1902, and an unidentified species of Polycitoridae, Eudistoma sp. 1, were recruited. Presenting continuous recruitment of all species, the density of living and dead recruits and colonies was similar on both faces of the rocks. The highest rainfall during winter, affected significantly the recruits density of D. duplicatum and D. psammathodes. Different permanence periods...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecology; Rocky shore; Didemnidae; Paraíba State.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000200005
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Uma armadilha para captura de Porcellanidae (Crustacea, Decapoda) do mediolitoral de praias rochosas Zoologia
Oliveira,Edinalva; Masunari,Setuko; Sicuro,André Henrique Gaida.
A simple net trap for capturing agile porcelain crabs living amongst superposed stones of the midlittoral rocky shore was developed. About a hundred pebbles and boulders were dislodged from I m² area and Im depth, so that a pit was formed. A sheet net of Im² and Imm mesh size was spread on the bottom of this pit and the stones were replaced again, like the original condition. After a cicle of high tide (about 12 hours), the same stones in the pit were carefully searched by dislodging and by rinsing them. The porcelain crabs were slowly getting out from the handling stones towards the bottom until they found the net sheet. The net border was lifted and the animais captured. The density of population sampled with the aid of the net trap was about 50% higher...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Trap; Porcelain crabs; Midlittoral; Rocky shore.
Ano: 1995 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000200013
Registros recuperados: 11
Primeira ... 1 ... Última
 

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