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Registros recuperados: 15
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Comparative analysis of tidepool fish species composition on tropical coastal rocky reefs at State of Ceará, Brazil Iheringia, Sér. Zool.
Cunha,Edna A.; Carvalho,Roberto A. A.; Monteiro-Neto,Cassiano; Moraes,Luiz Eduardo S.; Araújo,Maria Elisabeth.
This study compared tidepool fish assemblages within and among habitats at Iparana and Pecém beaches, State of Ceará, Northeast Brazil, using visual census techniques. A total of 8,914 fishes, representing 25 families and 43 species were recorded. The most abundant taxon was Sparisoma spp, followed by Haemulon parra (Desmarest, 1823), Acanthurus chirurgus (Bloch, 1787) and Abudefduf saxatilis (Linnaeus, 1758). Haemulidae was the most abundant family in number of individuals, followed by Scaridae, Acanthuridae and Pomacentridae. Within- and between- site differences in species assemblages probably reflected environmental discontinuities and more localized features, such as pool isolation episodes, or environmental complexity, both acting isolated or...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Visual census; Fish assemblages; Abundance; Biodiversity.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000300013
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Comparison of visual census and high definition video transects for monitoring coral reef fish assemblages ArchiMer
Pelletier, Dominique; Leleu, Kevin; Mou-tham, Gerard; Guillemot, Nicolas; Chabanet, Pascale.
Monitoring fish and underwater habitats, particularly in and around marine protected areas (MPAs) requires non-destructive observation methods. This is generally achieved by divers conducting underwater visual censuses (UVC), but video-based techniques are now being used more often to observe underwater macrofauna and habitats. A comparison of these two techniques is relevant with the development of high-definition (HD) video, which constitutes a substantial improvement over previously available video resolutions at limited extra cost. We conducted a paired observation experiment involving both HD video and UVC in an MPA located in the New Caledonian lagoon, which is a highly diversified coral reef ecosystem. We compared three techniques for counting fish...
Tipo: Text Palavras-chave: Fish assemblages; MPA monitoring; High-definition underwater video; Underwater visual censuses (UVC); Coral reefs.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00031/14192/11470.pdf
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Development of habitat suitability criteria for Neotropical stream fishes and an assessment of their transferability to streams with different conservation status Neotropical Ichthyology
Teresa,Fabrício Barreto; Casatti,Lilian.
We assessed the preference of 10 fish species for depth and velocity conditions in forested streams from southeastern Brazil using habitat suitability criteria (HSC curves). We also tested whether preference patterns observed in forested streams can be transferred to deforested streams. We used data from fish sampled in 62 five-meter sites in three forested streams to construct preference curves. Astyanax altiparanae, A. fasciatus, Knodus moenkhausii, and Piabina argentea showed a preference for deep slow habitats, whereas Aspidoras fuscoguttatus, Characidium zebra, Cetopsorhamdia iheringi, Pseudopimelodus pulcher, and Hypostomus nigromaculatus showed an opposite pattern: preference for shallow fast habitats. Hypostomus ancistroides showed a multimodal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Depth; Fish assemblages; Habitat preference; Riparian forest; Velocity.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000200395
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Effect of introduced species and habitat alteration on the occurrence and distribution of euryhaline fishes in fresh- and brackish-water habitats on Aruba, Bonaire and Curaçao (South Caribbean) Naturalis
Hulsman, H.; Vonk, R.; Aliabadian, M.; Debrot, A.O.; Nijman, V..
We conducted an ichthyological survey during the dry season of 2006 on the semi-arid islands of Aruba, Bonaire and Curaçao to provide information on species composition, richness and distribution in natural and non-natural aquatic habitats. The dry season species assemblages (N = 9 species) comprised less species than the wet seasons, and these data refine our knowledge of the indigenous fish fauna and its refuge localities during phases of drought and ensuing high salinity. A hierarchical cluster analysis reveals that the three islands have different species compositions with Curaçao being the most diverse, probably due to its having the most habitats and freshwaters present throughout the year. Species richness was unrelated to salinity and species...
Tipo: Article / Letter to the editor Palavras-chave: Fish assemblages; Semi-arid islands; Intermittent rivers; Aquatic refugia; Ecological integrity; 42.81.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/269647
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Fish assemblages in a tidal flat BABT
Vendel,Ana Lúcia; Lopes,Sabine Granado; Santos,César; Spach,Henry Louis.
Studies were carried out on fish assemblages in a tidal flat. Samples were obtained monthly at low tide of the half moon in the tidal flat of Paranaguá Bay, Brazil, with two seine nets, one with a 1 mm mesh, 30 m in length and 3 m in height and another with a 10 mm mesh, 65 m in length and 2 m in height. A total of 8,890 fish were captured, comprising 24 families and 53 species. The most abundant species were Harengula clupeola and Atherinella brasiliensis, which represented 63.4% of the total, capture. A seasonal tendency was observed in the abundance of fishes, with less fishes being captured during winter and part of spring. The number of species showed a seasonal pattern, with the gradual decrease through winter and a marked increase in summer. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tidal flat; Fish assemblages; Seasonal variation; Brazil.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000200015
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Fish beta diversity responses to environmental heterogeneity and flood pulses are different according to reproductive guild Neotropical Ichthyology
Gutiérrez C,Ángela; Ortega,Jean Carlo Gonçalves; Agostinho,Angelo Antonio.
ABSTRACT In floodplain communities, beta diversity is influenced by different factors; however, environmental heterogeneity and floods are believed to be particularly influential. The influence of environmental heterogeneity and floods on beta diversity may vary among guilds that present different ecological traits. This study evaluated the correlation between the environmental heterogeneity and flood periods and the beta diversity of trophic and reproductive guilds of fish assemblages. Sampling was conducted quarterly between 2000 and 2012 in the upper Paraná River floodplain. The environmental heterogeneity and period (i.e., dry or flood) were associated with the beta diversity of each guild based on the results of generalized least squares linear...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dissimilarity; Fish assemblages; Flood pulse; Reproductive guilds; Trophic guilds.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400212
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Influence of environmental variables on stream fish fauna at multiple spatial scales Neotropical Ichthyology
Junqueira,Nara Tadini; Macedo,Diego Rodrigues; Souza,Rafael Couto Rosa de; Hughes,Robert Mason; Callisto,Marcos; Pompeu,Paulo Santos.
ABSTRACT Effects of environmental variables at different spatial scales on freshwater fish assemblages are relatively unexplored in Neotropical ecosystems. However, those influences are important for developing management strategies to conserve fish diversity and water resources. We evaluated the influences of site- (in-stream) and catchment-scale (land use and cover) environmental variables on the abundance and occurrence of fish species in streams of the Upper Araguari River basin through use of variance partitioning with partial CCA. We sampled 38 1st to 3rd order stream sites in September 2009. We quantified site variables to calculate 11 physical habitat metrics and mapped catchment land use/cover. Site and catchment variables explained > 50% of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Disturbed sites; Fish assemblages; Land use; Partial CCA; Physical habitat.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000300202
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Riparian ecotones and spatial variation of fish assemblages in Portuguese lowland streams IPB - Escola Superior Agrária
Collares-Pereira, M.J.; Geraldes, Ana Maria; Magalhães, M.F.; Coelho, M.M..
The first results of a long-term study on the role of riparian ecotones on the population and community dynamics of Iberian stream fish are presented and discussed . Riparian and macrophyte cover, bank slope and depth were among the most important variables affecting fish distribution . In general small fish favoured shallow areas with high macrophyte cover, whereas large fish dominated in deep areas with a high riparian cover . Slight spatial changes in terrestrial prey use were found suggesting a minor role for this resource during autumn . Finally, no significant spatial differences were found for linear growth, although some differences were obtained for the condition factor
Tipo: Article Palavras-chave: Riparian ecotones; Fish assemblages; Spatial variation; Iberian streams.
Ano: 1995 URL: http://hdl.handle.net/10198/713
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Second floor, please: the fish fauna of floating litter banks in Amazonian streams and rivers Neotropical Ichthyology
Carvalho,Lucélia Nobre; Fidelis,Luana; Arruda,Rafael; Galuch,André; Zuanon,Jansen.
Floating litter banks are an ephemeral habitat consisting of branches, twigs, flowers, seeds, and fruits that are trapped on the stream water surface by a variety of retention mechanisms. These heterogeneous materials form a deep layer of dead plant matter that is colonized by a variety of organisms, including fish that forage on the aquatic macroinvertebrates found in this unique habitat. In this study, we aimed to characterize which fish species occupy the floating litter banks and their trophic characteristics, as well as determine if fish assemblage composition and species richness can be predicted by the size of the floating litter banks. Fish sampling was conducted in five rivers located in the Amazon basin. Of the 31 floating litter banks sampled...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ephemeral habitats; Fish assemblages; Insectivores; Lotic systems; Trophic structure.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100085
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Spatio-temporal organization patterns of demersal assemblages of the east coast of Corsica (Mediterranean Sea) ArchiMer
Gaertner, Jean-claude; Bertrand, Jacques; Samani, D; Souplet, Arnauld.
The paper deals with the spatio-temporal organization patterns demersal assemblages along the east coast of Corsica. We analysed data collected by the first standardized experimental bottom trawl surveys performed in this region from 1994 to 1999 (MEDITS programme). The use of a multiway table method (STATIS-CoA) showed that the spatial organization pattern of the demersal assemblages of eastern Corsica was highly stable during the period studied. This pattern was structured around three bathymetric areas (i) the continental shelf (between 50 to 200 m depth), (ii) the upper slope (from 200 to 500 m) and (iii) the deeper slope (from 500 to 800 m), but it did not show any heterogeneity in relation with latitude. Along the cast coast of Corsica-characterized...
Tipo: Text Palavras-chave: Corsica; Mediterranean Sea; Stability; Multiway table analysis; Trawl surveys; Fish assemblages; Spatial structures.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-692.pdf
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Spatio-temporal trends in diversity of demersal fish assemblages in the Mediterranean ArchiMer
Farriols, M. Teresa; Ordines, Francesc; Carbonara, Pierluigi; Casciaro, Loredana; Di Lorenzo, Manfredi; Esteban, Antonio; Follesa, Cristina; García-ruiz, Cristina; Isajlovic, Igor; Jadaud, Angelique; Ligas, Alessandro; Manfredi, Chiara; Marceta, Bojan; Peristeraki, Panagiota; Vrgoc, Nedo; Massutí, Enric.
The high species richness, coupled with high proportion of endemism, makes the Mediterranean one of the world’s ‘biodiversity hotspots’. However, the continuous increase in fisheries in the last few decades has led to the overexploitation of their main commercial stocks. Using fishery-independent data collected under the framework of the MEDITS trawl surveys carried out over the last 20 years, we study the demersal fish diversity pattern in the Mediterranean at a large spatial and temporal scale to determine whether it is being affected by the general fishing overexploitation of the demersal resources. The detected diversity trends are compared with the spatio-temporal variation in bottom trawl fishing effort in the Mediterranean. Our results show a...
Tipo: Text Palavras-chave: Biodiversity; Fish assemblages; MEDITS; Bottom trawling; Fishing effort; Mediterranean Sea.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00584/69628/67484.pdf
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Structure and Dynamics of Fish Assemblages in a Tidal Creek Environment BABT
Vendel,Ana Lúcia; Spach,Henry Louis; Lopes,Sabine Granado; Santos,César.
Studies were carried out on structure and dynamics of fish assemblages in the Baguaçu tidal creek, Paranaguá Bay, Brazil. A total of 30,104 fish were captured, comprising 21 families and 47 species. Both in weight and in number, the species Anchoa parva prevailed. Monthly captures in number and weight were largest in the autumn and part of the winter. No seasonal tendency was observed in the indexes of community structure. The dendrogram produced by the classification of the samples separated the 12 months of collection into three groups, reflecting differences in the qualitative and quantitative occurrences of the most important taxa. Some ecological likeness, not only seasonal patterns of abundance, seemed evident in the seasonality of the groupings of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tidal creek; Fish assemblages; Seasonal variation; Brazil.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000300015
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The protected areas system in Brazil as a baseline condition for wetlands management and fish conservancy: the example of the Pantanal National Park Neotropical Ichthyology
Polaz,Carla N. M.; Ferreira,Fabio C.; Petrere Júnior,Miguel.
ABSTRACT Considering the need for the Brazilian government to develop tools for environmental monitoring for biodiversity conservancy purposes in the national protected areas system, this paper focuses on determining reference site metrics (or baselines) for adapting the Index of Biotic Integrity (IBI) based on the fish assemblages in the Pantanal National Park (PNP). The habitats in the PNP were grouped into four categories: main rivers, corixos (channels connecting the floodplain), permanent bays, and temporary bays. Fish samplings were performed at 12 points during the dry season (Oct-Nov 2010 and 2011). 146 fish species were identified from the total 18,954 individuals collected with standardized fishing gear. There was no association between the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conservation unit; Fish assemblages; Floodplain; Index of biotic integrity; Multimetric indices.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000300210
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Trophic structure of fish assemblages in the Lower Miranda River, Pantanal, Mato Grosso do Sul State, Brazil BJB
RESENDE,E. K. de.
Of a total of 101 fish species caught in the Lower Miranda River floodplain, 29 were omnivorous, 16 ichthyophagous, 12 herbivorous, 18 detritivorous, 8 zooplanktophagous, 7 insectivorous, 2 lepidophagous, 4 ichthyophagous/insectivorous and 4 zooplanktophagous/insectivorous. Almost half of the species belong to omnivorous and detritivorous trophic guilds. The same is not true when biomass is considered. The number of fish species by trophic guild didn't change along the year whereas the biomass changed significantly. The frequency of abundant fish species was not the same for the sampled environments.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pantanal; Fish assemblages; Trophic structure.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000300004
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Use of an estuarine environment (Barra do Saí lagoon, Brazil) as nursery by fish Zoologia
Vendel,Ana L.; Chaves,Paulo de T..
Studies were carried out at the Barra do Saí lagoon, on the northern coast of Santa Catarina State, Brazil, to evaluate the function played by this estuary in the life cycle of fish found at the coastal zone. Samplings were performed using beach seine net from December 2000 to November 2001. The continental influence is strong, as showed by the occurrence of freshwater fishes, although most of the 43 species recorded are marine ones. It was verified that around summer, when the temperature of the water is high, the values of salinity decrease and those of turbidity increase. At this time there is also an increase in the abundance of juvenile fish in the lagoon. Because of its average depth of less than 0.7 m, the lagoon is inhabited primarily by juveniles,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coastal lagoon; Fish assemblages; Shallow waters; Recruitment.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000400020
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