Sublittoral Macrobenthic Infaunal Assemblages of Two Nearby Embayments from Central Chile
✍ Scribed by Dr. Franklin D. Carrasco; Victor A. Gallardo; Sonia Medrano
- Book ID
- 102869751
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 864 KB
- Volume
- 73
- Category
- Article
- ISSN
- 1434-2944
No coin nor oath required. For personal study only.
✦ Synopsis
The benthic assemblages in two Central Chile nearby enibayments were studied from quantitative samples collected from 15 sites a t depths of 8-65 m. The macrobenthic infauna (-0.5 mni) of both bays was greatly dominated by polychaetes. Some 93 taxa were identified, of which 51 were polychaetes. The average macrofaunal abundance for all stations (15,021 ind. m-2) is very close to the values reported for the neighboring areas. Numerical classification and ordination (DCA) of sites resulted in three site-groups mostly reflecting differences in the bottom sediments: the muddy-bottom stations of Concepci6n Bay and the shelf-associated stations, the sandy-bottom stations of San Vicente Bay and an heavily polluted station a t San Vicente port. Classification of species showed that the muddv-bottom stations and the sandy-bottom sites had charact'eristic species assemblages. The macrofannal assemblages presented high dominance values, which were due to the high numerical abundances of a few species in the collections.