000 01673nab a22003137u 4500
003 EC-PaCDF
005 20210111095347.0
008 060603t19741974||||||||||||||||||||fre||
040 _aEC-PaCDF
_bspa
_cEC-PaCDF
041 _afre
082 0 4 _a577.699
_223
100 1 _aHouvenaghel, G. T.
_eautor
245 1 0 _aAspects écologiques de la zonation intertidale sur les côtes rocheuses des Îles Galapagos /
_cG.T. Houvenaghel et N. Houvenaghel.
260 3 _c1974.
300 _a: 135-152 p.
520 _aFeatures of the intertidal zonation on the rocky shores of the Galapagos Islands are described and discussed in relation to environmental factors, in particular temperature — which varies with regional hydrology and climatology. Owing to the thermal properties of the coastal waters and to the nature of the substrate (mainly basalt), intertidal organisms are exposed to a wide range of temperatures, which fluctuate with tide, day, and season. As a result, life is mostly restricted to the lowest levels of the shore; the middle- and upper-level populations are sparse. Local variations (biofacies) resulting from water agitation are described. Biota consist of tropical, subtropical, and warm-temperate components. Tropical species dominate in sheltered areas and in middle and upper shores.
546 _aFrancés
550 _a164
653 0 _aHydrology
653 0 _aHidrología
653 0 _aClimatology
653 0 _aClimatología
653 0 _aWaters coastal
653 0 _aAguas costeras
653 0 _aGalapagos
700 1 _aHouvenaghel, N.
_eautor
773 0 _tMarine Biology
_gVol. 26, (1974), p. 135-152.
942 _2ddc
_cARTICLE
999 _c2314
_d2314