Consulta: subjectFacets:"Patterns"
Registros recuperados: 5
Data/hora: 01/06/2024 04:46:27

Diurnal temporal patterns of the diversity and the abundance of reef fishes in a branching coral patch in New Caledonia
Provedor de dados: 5
Autores: Mallet, Delphine; Vigliola, Laurent; Wantiez, Laurent; Pelletier, Dominique.
Small-scale spatial and temporal variability in animal abundance is an intrinsic characteristic of marine ecosystems but remains largely unknown for most animals, including coral reef fishes. In this study, we used a remote autonomous unbaited video system and recorded reef fish assemblages during daylight hours, 10 times a day for 34 consecutive days in a branching coral patch of the lagoon of New Caledonia. In total, 50 031 fish observations belonging to 114 taxa, 66 genera and 31 families were recorded in 256 recorded videos. Carnivores and herbivore-detritus feeders dominated the trophic structure. We found significant variations in the composition of fish assemblages between times of day. Taxa richness and fish abundance were greater in the early...
Tipo: Text
Palavras-chave: Coral reef fish; High-frequency sampling; Patterns; Temporal variation; Underwater video.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00326/43755/45787.pdf

Classic and novel brominated flame retardants (BFRs) in common sole (Solea solea L.) from main nursery zones along the French coasts
Provedor de dados: 5
Autores: Munschy, Catherine; Moisan, Karine; Tixier, Celine; Boulesteix, Lara; Morin, Jocelyne.
Brominated flame retardants (BFRs) were investigated in juvenile common sole from nursery zones situated along the French coast in 2007, 2008 and 2009. Extensive identification was performed with regard to PBDEs, novel BFRs 1.2-bis(2,4,6-tribromophenoxy)ethane (BTBPE) and decabromodiphenylethane (DBDPE), and other non-PBDE BFRs, namely, hexabromobenzene (HBB) and 2,2',4,4',5,5'-hexabromobiphenyl (BB-153). Polybrominated diphenyl ether (PBDE) concentrations (E 14 congeners) ranged from 0.01 ng/g to 0.16 ng/g wet weight (ww) in muscle, and 0.07 ng/g to 2.8 ng/g ww in liver. Concentrations were in the lower range of those reported in the literature in other European locations. Lower PBDE concentrations, condition indices and lipid contents were observed in...
Tipo: Text
Palavras-chave: Polybrominated diphenyl ethers (PBDEs); Novel brominated flame retardants (NBERs); French coastal nurseries; Benthic fish; Sole; Patterns.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00048/15967/13490.pdf

Levels and trends of the emerging contaminants HBCDs (hexabromocyclododecanes) and PFCs (perfluorinated compounds) in marine shellfish along French coasts
Provedor de dados: 5
Autores: Munschy, Catherine; Marchand, Philippe; Venisseau, A.; Veyrand, B.; Zendong, Z.
The levels and congener patterns of HBCDs (hexabromocyclododecanes) and PFCs (perfluorinated compounds) were determined in filter-feeding molluscs collected in 2008 and 2010 along the coasts of mainland France. alpha-HBCD and PFOS (perfluorooctane sulfonate) were detected in all samples, revealing widespread contamination of the coastal environment by these emerging contaminants. The spatial distribution of Sigma-HBCD concentrations showed higher median levels in samples from the Mediterranean Sea and English Channel respectively, i.e. 0.19 ng g(-1) wet weight (ww) and 0.08 ng g(-1) ww, related to high anthropogenic pressure from urban and industrial activities, while the median concentration was 0.05 ng g(-1) ww in samples from the Atlantic coast. Among...
Tipo: Text
Palavras-chave: Persistent organic pollutants; Environment specimen banking; Coastal marine environment; Concentrations; Patterns; Temporal trends.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00176/28765/27297.pdf

Distributional patterns of the American Peiratinae (Heteroptera: Reduviidae)
Provedor de dados: 16
Autores: Morrone, J.J.; Coscarón, M. del C.
Based on distributional data of 40 species of Peiratinae, historical relationships of five Amazonian areas (Paranaense, Atlantic, Pacific, Amazonian, and Cerrado) and two Chacoan areas (Chaco and Caatinga), were investigated through a parsimony analysis of endemicity (PAE). The resulting area cladogram indicates the following sequence of area fragmentation: (Cerrado (Caatinga (Chaco, ((Pacific, Amazonian), (Atlantic, Paranaense))))). It is proposed that these results reflect the gradual development of a diagonal of open formations (Chaco-Cerrado-Caatinga), which separated the former continuous tropical forest into two parts, namely, northwestern (Pacific plus Amazonian) and southeastern (Paranaense plus Atlantic).
Tipo: Article / Letter to the editor
Palavras-chave: Heteroptera; Reduviidae; Peiratinae; Distribution; Patterns; Parsimony analysis; Endemicity; 42.75.
Ano: 1996
URL: http://www.repository.naturalis.nl/record/318686

Strategies of the small-scale fisheries on the Central Amazon floodplain
Provedor de dados: 36
Autores: FREITAS,Carlos Edwar de Carvalho; BATISTA,Vandick da Silva; INHAMUNS,Antonio José.
A multivariate approach was applied to data of small-scale fisheries developed in Central Amazon, using information about catch composition, environment, fishing gear and season of the hydrological cycle. The correspondence analysis demonstrated to be a good tool for the analysis related multispecies fisheries. The analysis identified patterns of use of fisheries resources by the riverine communities, showing the correlation between the environmental factors and the fishing strategy for the capture of target fish species, indicating the high level of empiric knowledge about the environment and fisheries.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Small-scale fisheries; Central Amazon; Multivariate analysis; Patterns.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672002000100101