![]() La forte proportion de poissons juvéniles (87 %) etĭe crevettes montre l'importance de ces criques comme nourriceries. L'indice de diversité H' est faible (0,9). (Mugilidae), et Anableps anableps (Anablepidae). (Ariidae), Colomesus psittacus (Tetraodontidae), Hexanematichthys herzbergii (Ariidae), Pseudauchenipterus nodosus (Auchenipteridae), la crevette Fenneropenaeus subtilis (Penaeidae), Anchovia clupeoides (Engraulidae), Mugil spp. Des 47 espèces (27 familles), les plus abondantes Zone intertidale, nord du Brésil, ont éte étudiés, enįermant celles-ci au moyen de filets, à marée haute et lors de la Short-term range of tidal ichthyofauna responses, a sample design shouldĬonsider the spring/neap and the day/night cycle.ĭes changements de la structure du necton des criques de la mangrove, en When returning from the intertidal zone at ebb tide. Larger fish withdraw toĭepressions, small fish and juvenile shrimp were abundant near the shallowīanks, suggesting inter- and intraspecific splitting of the migration routes Revealed a high biomass (30 ± 14 g m −2). Beach seining in the subtidal parts at low water Pressure was considered to be low because of the presence of only a few, Strong spring tides yielded extraordinary high nektonĬatches, suggesting that high-water level is an important parameter in the Abundance of 14 species correlated positively with the High-water level influenced the species assemblages, but salinity and water Spring tide-night, spring tide-day, neap tide-night and neap tide-day. Four different species assemblages were identifiedĪs being triggered by factor combinations such as “tide” and “time of day”: When more rare species entered and dominant species increased in ![]() Evenness J' was lowest at spring tide-night The number of species was highest at spring tide-nightĪnd lowest at neap tide-day. (87%) and shrimps point to the importance of intertidal mangrove creeksįor fish nurseries. Mean values of fish density and biomass (± S.E.) (Mugilidae), and Anableps anableps (Anablepidae).ĭiversity H' was low (0.9). (Ariidae), Colomesus psittacus (Tetraodontidae), Hexanematichthys herzbergii (Ariidae), Pseudauchenipterus nodosus (Auchenipteridae), the shrimp Fenneropenaeus subtilis (Penaeidae), Anchovia clupeoides (Engraulidae), Mugil spp. ![]() From a total of 47 species (27 families), the most abundant were:Ĭathorops sp. Institute for Marine Research (IfM), Duesternbrooker Weg 20, 24105Ĭorresponding in nekton community structure in north Brazilian intertidal mangroveĬreeks were studied by setting block nets at high water in the wet seasonġ999. Uwe Krumme 1, Ulrich Saint-Paul 1 and Harald Rosenthal 2Ĭenter for Tropical Marine Ecology (ZMT), Fahrenheitstr. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |