Some characteristics of macrobenthic fauna from the organic-enriched sediments at Talcahuano, Chile
Oyarzún, C.; Carrasco, F.D.; Gallardo, V.A. (1987). Some characteristics of macrobenthic fauna from the organic-enriched sediments at Talcahuano, Chile. Cah. Biol. Mar. 28(3): 429-446
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723; e-ISSN 2262-3094, meer
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| Auteurs | | Top |
- Oyarzún, C.
- Carrasco, F.D.
- Gallardo, V.A.
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| Abstract |
The community structure of the macrobenthic (> 500 mu m) fauna from organic matter enriched-soft bottom of Talcahuano Port, Concepcion Bay, Chile, was studied and compared over other two sites located further away with progressively less organic content. Polychaeta was the main taxon reaching 93.9% of the whole analyzed fauna. The numerical abundances were high (from 26.280 ind. m super(-2) to 63.830 ind. m super(-2)), while the number of species was low (44 species). The species diversity values calculated for the fauna were low, and the same pattern for the evenness was observed. The Talcahuano port benthic station (Cl) was dominated by the great numbers of the small opportunistic spionid polychaete Carraziella carrascoi. The nearby station C2 showed high numbers of the small polychaete, Cossura chilensis and oligochaetes. The more distant site from Talcahuano port (station C3) was dominated by individuals of C. carrascoi and Owenia collaris. |
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