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Titolo:
Environmental influences on patterns of larval replenishment in coral reeffishes
Autore:
Wilson, DT; Meekan, MG;
Indirizzi:
James Cook Univ N Queensland, Dept Marine Biol, Townsville, Qld 4811, Australia James Cook Univ N Queensland Townsville Qld Australia 4811 811, Australia Australian Inst Marine Sci, Townsville, Qld 4810, Australia Australian Inst Marine Sci Townsville Qld Australia 4810 4810, Australia
Titolo Testata:
MARINE ECOLOGY-PROGRESS SERIES
, volume: 222, anno: 2001,
pagine: 197 - 208
SICI:
0171-8630(2001)222:<197:EIOPOL>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
LEE-STOCKING ISLAND; GREAT-BARRIER-REEF; RECRUITMENT PATTERNS; NURSERY HABITATS; PELAGIC STAGES; SETTLEMENT; PACIFIC; BAHAMAS; VARIABILITY; SHOREFISHES;
Keywords:
larval replenishment; light traps; larval fish; environment; water temperature; wind component; time-series;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Wilson, DT Dept Marine & Wildlife Resources, POB 3730, Pago Pago, AS 96799USA Dept Marine & Wildlife Resources POB 3730 Pago Pago AS USA 96799
Citazione:
D.T. Wilson e M.G. Meekan, "Environmental influences on patterns of larval replenishment in coral reeffishes", MAR ECOL-PR, 222, 2001, pp. 197-208

Abstract

Spatial and temporal patterns of larval replenishment to the San Blas Archipelago were measured using 3 light traps in each of 3 habitats (exposed, lagoon and back-reef) over 18 lunar months from December 1996 to June 1998. Traps were sampled for 19 consecutive nights centred on the new moon in each month. The effects of environmental variables (wind speed and wind direction, tidal range, rainfall, solar radiation and water temperature) on catches were examined both in the days immediately prior to settlement and during the entire larval phase using 2 approaches. Firstly, time-series analyseswere used to compare night-to-night patterns in light trap catches of 11 species (Astrapogon puncticulatus, Eucinostomus melanopterus, Lutjanus apodus, L. mahogani, wphioblennius atlanticus, Stegastes dorsopunicans, S. partitus, S. planifrons Synodontidae spp., Thalassoma bifasciatum and an unidentified blenny) with environmental variables. Secondly, modified correlation analysis was used to examine the relationships between environmental variables, averaged over larval durations, and light trap catches of 6 of these species. Time-series analysis detected significant correlations between catches of 8 species and wind direction; however, correlations were often weak and variable in direction. Similarly, there were weak correlations between day-to-day catches of all but 3 species and water temperature, Modified correlation analysis also found that water temperature was correlated with catches of 4 species (Lutjanus mahogani, Stegastes dorsopunicans, S. partitus and S. planifrons), Catches of the remaining species, Ophioblennius atlanticus and Thalassoma bifasciatum, were not correlated with environmental variables in these analyses, Multiple-regression analysis could not detect any combined effects of environmental variables on patterns of light trap catches, although this analysis also identified weak correlations (R-2 = 0.08 to0.29) between catches of Lutjanus mahogani, Ophioblennius atlanticus, Stegastes dorsopunicans, S. partitus, S. planifrons and Thalassoma bifasciatum and water temperature.

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Documento generato il 04/04/20 alle ore 11:50:28