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| Bouchoucha, Marc; Brach-papa, Christophe; Gonzalez, Jean-louis; Lenfant, P.; Darnaude, A. M.. |
| High abundances of juvenile fish in certain ports suggest they might provide alternative nursery habitats for several species. To further investigate this possibility, post-settlement growth, metal uptake and body condition were estimated in 127 juveniles of two seabream species, collected in 2014–15, inside and outside the highly polluted ports of the Bay of Toulon. This showed that differences in local pollution levels (here in Hg, Cu, Pb and Zn) are not consistently mirrored within fish flesh. Muscle metal concentrations, below sanitary thresholds for both species, were higher in ports for Cu, Pb and V only. Otherwise, fish muscle composition principally differed by species or by year. Juvenile growth and condition were equivalent at all sites. Higher... |
| Tipo: Text |
Palavras-chave: Coastal areas; Nursery habitats; Fish; Contamination; Otoliths. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00408/51932/52609.pdf |
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| Brito,Gitá J. S.; Lima,Lidiane G. de; Oliveira,Ronnie E. M. C. C.; Pessanha,André. |
| ABSTRACT We investigated the intraspecific partitioning of food resources of the Brazilian silverside Atherinella brasiliensis in a tropical estuary. A total of 1,099 stomachs were analyzed, and the diet consisted mainly of Gastropoda, Ceratopogonidae larvae, Decapoda larvae, Calanoida, Cyclopoida, Hymenoptera and Brachyura. Ordination of the mean volumetric percentage contribution of preys indicated differences in the dietary compositions between sites and size classes. By SIMPER analysis, we detected high dissimilarity between size classes, suggesting ontogenetic niche shifts: the diet of the early juveniles was based in zooplankton, whereas adults consumed mainly benthic macroinvertebrates. These shifts were related to changes in feeding structures and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal areas; Habitat heterogeneity; Trophic strategies. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000200211 |
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| Bouchoucha, Marc; Pecheyran, C.; Gonzalez, Jean-louis; Lenfant, P.; Darnaude, A. M.. |
| The construction of ports has caused substantial habitat destruction in coastal areas previously used as nursery grounds by many fish species, with consequences to fish stocks. These artificial coastal areas might provide alternative nursery habitats for several species for juvenile fish abundances and growth in ports, although their contribution to adult stocks had never been estimated. The variability of otolith composition in the juveniles of two Diplodus species was investigated in three contrasting port areas and two adjacent coastal juvenile habitats of the Bay of Toulon (northwestern Mediterranean) in order to determine the possible use of otolith fingerprints as natural tags for the identification of juvenile fishes in ports. The global accuracy of... |
| Tipo: Text |
Palavras-chave: Coastal areas; Nursery habitats; Fish; LA-ICPMS; Contamination. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00449/56051/57571.pdf |
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| Andrieux-loyer, Françoise; Aminot, Alain. |
| Phosphorus forms with respect to sediment characteristics, such as grain-size, and major chemical elements, were studied in French coastal marine areas (the Bay of Seine and the Loire and Gironde Estuaries).In the three areas, Fe/Al-bound phosphate (Fe/Al-P) and exchangeable phosphate (exch-P) were significantly related to the proportion of fine fraction (< 63 mum). The special association of these forms with fine particles, as well as the relationships between exch-P, Fe/Al-P and Fe showed that adsorption processes on Fe oxides had taken place. However, for similar Fe concentrations, Bay of Seine sediments showed Fe/Al-P concentrations which were four to five times higher than those found in the Loire and Gironde Estuaries. This was attributed to... |
| Tipo: Text |
Palavras-chave: Coastal areas; Major elements; Phosphorus forms; Grain size; Sediments. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/publication-469.pdf |
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| Bouchoucha, Marc; Darnaude, A. M.; Gudefin, A.; Neveu, R.; Verdoit-jarraya, M.; Boissery, P.; Lenfant, P.. |
| The construction of marinas along the shoreline has caused substantial habitat destruction within the sheltered coastal areas previously used as nursery grounds by many fish species. However, although the negative ecological impacts of these constructions have been reported extensively, their potential roles in the functioning of the coastal zone remain largely unknown. Here, we surveyed the juveniles of 4 Diplodus species in 5 marinas located along the French Mediterranean coast to assess whether rocky fishes can successfully settle inside these artificialized coastal areas. Inter-specific differences in the spatiotemporal use of the various artificial habitats provided by marinas were investigated between April and August over 2 consecutive years. We... |
| Tipo: Text |
Palavras-chave: Coastal areas; Habitat anthropization; Fish juveniles; Sparids; Habitat preferences; Ecological engineering; Biohut. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00334/44501/44196.pdf |
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