franja-sup-Home franja-sup-UV


Volume 44 - Number 2 - 2009

The hard-bottom intertidal communities before and after removal of an anthropogenic disturbance: A case study in the coast of Puerto Madryn (Patagonia, Argentina)

Américo Torres1 y Guillermo Caille2


1Centro Nacional Patagónico (CONICET), Brown 2915 (9120) Puerto Madryn, Chubut, Argentina
2Fundación Patagonia Natural, Marcos A. Zar 670 (9120) Puerto Madryn, Chubut, Argentina




In spite of the marked growth of the coastal cities in Patagonia, studies on the effects of the urban development upon marine intertidal communities are scarce. We evaluated the rocky-shore intertidal community composition during (June 1998) and after (June 2005) exposure to a sewage discharge which was eliminated in 2001. A perturbed environment and a control site were analyzed. No significant differences were detected in species richness between sites and years. However, the species composition was different between sites in 1998 and similar in 2005. These results suggest the use of combined indicators in diagnostic studies on stressed environments


Key words: Rocky shores, mid intertidal, environmental stress, sewage




1Laboratorio de Zooplancton, Instituto de Ciencias del Mar y Limnología,Universidad Nacional Autónoma de México. A. P. 70-305, 04510 México, D. F. México
atasehir evden eve nakliyat avcilar evden eve nakliyat umraniye evden eve nakliyat beylikduzu evden eve nakliyat sisli evden eve nakliyat bahcelievler evden eve nakliyat