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| Registros recuperados: 27 | |
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| 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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| Maire, Eva; Villeger, Sebastien; Graham, Nicholas A. J.; Hoey, Andrew S.; Cinner, Joshua; Ferse, Sebastian C. A.; Aliaume, Catherine; Booth, David J.; Feary, David A.; Kulbicki, Michel; Sandin, Stuart A.; Vigliola, Laurent; Mouillot, David. |
| Determining whether many functionally complementary species or only a subset of key species are necessary to maintain ecosystem functioning and services is a critical question in community ecology and biodiversity conservation. Identifying such key species remains challenging, especially in the tropics where many species co-occur and can potentially support the same or different processes. Here, we developed a new community-wide scan CWS) approach, analogous to the genome-wide scan, to identify fish species that significantly contribute, beyond the socio-environmental and species richness effects, to the biomass and coral cover on Indo-Pacific reefs. We found that only a limited set of species (51 out of approx. 400, = approx. 13%), belonging to various... |
| Tipo: Text |
Palavras-chave: Ecosystem functioning; Biodiversity; Fish community; Key species; Ecosystem services; Coral reefs. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00452/56388/68019.pdf |
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| Vaz, Sandrine; Carpentier, Andre; Coppin, Franck. |
| Multivariate and spatial analyses are used to identify and locate fish, cephalopod, and macrocrustacean species assemblages in the eastern English Channel from 1988 to 2004. Four sub-communities with varying diversity levels were identified in relation to depth, salinity, temperature, seabed shear stress, sediment type, and benthic community nature. From 1997 to 2004, some 25% of overall community structure variance could be related to the available environmental descriptors and 20% to persistent factors such as depth, seabed shear stress, sediment, and macro-invertebrate community type. Although there may be significant interannual shifts in overall community structure and composition, the sub-communities identified persisted over time, reflecting the... |
| Tipo: Text |
Palavras-chave: Structuring environment; Spatial patterns; Fish community; Eastern English Channel; Diversity. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2829.pdf |
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| Pinto,Benjamin Carvalho Teixeira; Peixoto,Magna Galvão; Araújo,Francisco Gerson. |
| This work aims to analyze changes in the fish assemblages along a longitudinal reaches of the rio Paraíba do Sul, one of the most used Brazilian aquatic systems, to assess the river "health" and to identify eventual recovery trends. Standardized monthly samplings were carried out at six sites, from October 1997 to September 1999, using casting, sieves, seine and gill nets. Three zones were searched: upstream (Z I), downstream (Z III) and nearby the source of pollution (Z II). Three univariate distribution methods were used: ABC (abundance-biomass curves), K-dominance curves, and geometric class's distribution. Additionally, cluster analysis was applied to detect eventual patterns. The ABC and K-dominance curves showed Z II with evident indication of stress... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish community; Neotropical fauna; Pollution; Water quality; ABC curves; Cluster analysis. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000200013 |
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| Travers-trolet, Morgane; Coppin, Franck; Cresson, Pierre; Cugier, Philippe; Oliveros-ramos, Ricardo; Verley, Philippe. |
| Modeling the mechanisms underlying trophic interactions between individuals allows the food web structure to emerge from local interactions, which constitutes a prerequisite for assessing how marine ecosystems respond to various anthropogenic pressures. Using a multispecies spatially explicit individual-based model, the emergence of trophic patterns was explored in the eastern English Channel ecosystem, where pelagic-benthic trophic coupling was recently studied empirically. The OSMOSE model was applied to this ecosystem by explicitly representing the life cycle of 13 fish species and one squid group, forced by pelagic and benthic prey fields that are variable over time and space. A matrix defining possible accessibilities between life stages was added to... |
| Tipo: Text |
Palavras-chave: Emergent patterns; Pelagic-benthic coupling; Individual-based model; Food web; Fish community. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00511/62290/66748.pdf |
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| Ravard, David; Brind'Amour, Anik; Trenkel, Verena. |
| Fishing affects fish populations through direct and indirect effects. It can change size structures and/or modify population mean weights. Reference values are thus needed to assess the status of populations in exploited ecosystems. These reference values can either be set by a historical approach, i.e. using information from before the onset of exploitation or overexploitation, or by a simulation approach. Using a model based on life-history parameters, we predicted population mean weights and length structures at equilibrium (in the absence of fishing and for fishing equal to different fishing mortalities) which we compared with contemporary data collected during scientific surveys in the Bay of Biscay. Contemporary mean weights were 88% to 30% smaller... |
| Tipo: Text |
Palavras-chave: Indicators; Fishing impacts; Ecosystem based management; Fish community; Reference points; Northeast Atlantic. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00188/29968/28485.pdf |
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| Desaunay, Yves; Guerault, Daniel. |
| A beam trawl survey of the Bay of Vilaine was conducted from 1981 to 1997. Changes in the commercial fish community were analyzed by comparing the characteristics at the year and decadal scales. The community structure and nursery function of the Bay were steady during the period. However, specific richness, assiduity and distribution indices demonstrated a reduction in the second decade. The global abundance fell from 105.8 ind.ha-1 to 31.3 ind.ha-1. This trend was less marked for the external more marine stratum, which exhibited the lowest densities. The results are discussed in terms of ecological meaning of such a community, compared with the overall demersal fish community. The reasons of the decrease are questioned regarding nursery habitat, local... |
| Tipo: Text |
Palavras-chave: Habitat; Survey; Bay of Vilaine; Fish community; Habitat; Suivi; Baie de Vilaine; Poissons; Peuplement. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/rapport-1288.pdf |
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| Koeck, Barbara; Tessier, Anne; Brind'Amour, Anik; Pastor, Jeremy; Bijaoui, Benjamin; Dalias, Nicolas; Astruch, Patrick; Saragoni, Gilles; Lenfant, Philippe. |
| In the context of growing anthropogenic disturbances that deeply alter marine coastal ecosystems, various management tools are used to protect biodiversity, such as fishing gear limitations, fishing quotas, protected areas or the creation of artificial reefs (ARs). In contrast to the other management tools, ARs require a modification of natural habitats. We used underwater visual censuses to investigate the effect of habitat modification on the structure of fish communities by comparing a natural reef (NR) to ARs with different habitat complexity. Different fish assemblage descriptors were used to assess species- and functional- and community-level aspects of the assemblages. ARs were rapidly colonized by adult fishes and presented community compositions... |
| Tipo: Text |
Palavras-chave: Ecological niche; Fish community; Fisheries management; Functional diversity; Gulf of Lion; Habitat complexity; Mediterranean Sea; Underwater visual census. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00189/30029/28514.pdf |
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| Brind'Amour, Anik; Rouyer, Armelle; Martin, Jocelyne. |
| The development of ecosystem-based indicators requires the broadening of a view of the community, from fish species to all the species (macrobenthic and fish) correctly captured by a given sampling gear. Many scientific surveys already have such integrated databases. The present note aims to demonstrate that existing databases, herein from dedicated coastal nursery surveys, are actually underexploited. Such databases contain information on non-commercial taxa, which could greatly improve our knowledge on the organisation and functioning of coastal ecosystems. Using two datasets, a "complete" dataset composed of commercial and not-commercial epibenthic trawled species (fish and invertebrate) and a "subset" dataset characterized by commercial and routinely... |
| Tipo: Text |
Palavras-chave: Nursery grounds; Functional diversity; Fish community; Coastal surveys; Beam trawl; Bay of Biscay. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6507.pdf |
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| Chaalali, Aurelie; Brind'Amour, Anik; Dubois, Stanislas; Le Bris, Herve. |
| Through their tissues or activities, engineer species create, modify, or maintain habitats and alter the distribution and abundance of many plants and animals. This study investigates key ecological functions performed by an engineer species that colonizes coastal ecosystems. The gregarious tubiculous amphipod Haploops nirae is used as a biological model. According to previous studies, the habitat engineered by H.nirae (i.e., Haploops habitat) could provide food and natural shelter for several benthic species such as benthic diatoms belonging to the gender Navicula, the micrograzer Geitodoris planata, or the bivalve Polititapes virgineus. Using data from scientific surveys conducted in two bays, this study explored whether (1) the Haploops sandy-mud... |
| Tipo: Text |
Palavras-chave: Coastal nurseries; Fish community; Haploops nirae; Isotopic diversity indices; Stable isotopes. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00396/50722/51431.pdf |
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| Paumier, A.; Tatlian, T.; Reveillac, E.; Le Luherne, Emilie; Ballu, S.; Lepage, M.; Le Pape, Olivier. |
| All around the world, an increasing proportion of estuarine systems are facing massive proliferations of green macroalgae, called green tides, in response to nutrient enrichment. The consequences of this perturbation for ichthyofauna that use estuarine systems as essential fish habitats remain understudied. To estimate these consequences, we combined outputs of both macroalgae proliferation and fish community surveys conducted for the European Water Framework Directive in thirteen estuaries in northwestern France, a region where green tides are of great concern. The approach revealed the influence of green tides on estuarine fish communities. The response of each community to the green tides differed according to their functional guild composition. Benthic... |
| Tipo: Text |
Palavras-chave: Fish community; Estuarine ecology; Green tides; Macroalgae; Nursery. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00465/57704/64188.pdf |
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| Cresson, Pierre; Chouvelon, Tiphaine; Bustamante, Paco; Bănaru, Daniela; Baudrier, Jerome; Le Loch, Francois; Mauffret, Aourell; Mialet, Benoit; Spitz, Jérome; Wessel, Nathalie; Briand, Marine; Denamiel, Margaux; Doray, Mathieu; Guillou, Gaël; Jadaud, Angelique; Lazard, Coline; Noûs, Camille; Prieur, Solène; Rouquette, Manuel; Saraux, Claire; Serre, Sandrine; Timmerman, Charles-andre; Verin, Yves; Harmelin-vivien, Mireille. |
| Investigating the drivers of fish assemblage trophic structure is a critical question, in order to better understand ecosystem functioning, predict the effects of perturbations and implement integrated management of exploited marine ecosystems. Ecosystemic surveys enabled the determination of the trophic structure of the fish assemblages in three French marine ecosystems, namely the Eastern English Channel, the Bay of Biscay and the Gulf of Lions, through the simultaneous collection of qualitative (stable isotopes and energy content) and quantitative (biomass) data. In the Bay of Biscay and in the Gulf of Lions, pelagic primary production supported at least 80% of the fish biomass production, and explained the dominance of pelagic species, but with... |
| Tipo: Text |
Palavras-chave: Fish community; Trophodynamics; Food webs; Benthic-pelagic coupling. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00629/74120/73562.pdf |
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| Paiva,Andréa C. G. de; Lima,Marina F. V.; Souza,José R. B. de; Araújo,Maria E. de. |
| The objectives of the present study were to identify species of reef fish that use the Rio Formoso estuary (northeastern Brazil) as a refuge and natural nursery and to describe the spatial distribution of the estuary fish fauna in rainy and dry seasons. A total of 5475 specimens, across 78 species and 39 families, were analyzed; 51.3% of the species were of reef origin. Among these, Eucinostomus melanopterus (Bleeker, 1863), E. gula (Cuvier, 1830), and Sphoeroides testudineus (Linnaeus, 1758), in this order, were the most abundant in the upper estuary; S. greeleyi Gilbert, 1900, E. melanopterus, and Lutjanus synagris (Linnaeus, 1758) were the most abundant in the mid estuary; and E. gula and Albula vulpes (Linnaeus, 1758) in the lower estuary. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Connectivity; Estuary; Fish community; Reef fishes; Spatial variation. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000200009 |
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| Registros recuperados: 27 | |
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