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Composition and temporal dynamics of a temperate rocky cryptobenthic fish assemblage
Beldade, R.; Erzini, K.; Gonçalves, E.J. (2006). Composition and temporal dynamics of a temperate rocky cryptobenthic fish assemblage. J. Mar. Biol. Ass. U.K. 86(5): 1221-1228
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
Peer reviewed article  

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Keywords
    Abundance; Community composition; Marine fish; Species diversity; Temporal variations; Zoobenthos; Gobius paganellus Linnaeus, 1758 [WoRMS]; Gobius xanthocephalus Heymer & Zander, 1992 [WoRMS]; Lepadogaster Goüan, 1770 [WoRMS]; Lepadogaster candolii Risso, 1810 [WoRMS]; Parablennius pilicornis (Cuvier, 1829) [WoRMS]; Tripterygion delaisi Cadenat & Blache, 1970 [WoRMS]; Marine

Authors  Top 
  • Beldade, R.
  • Erzini, K.
  • Gonçalves, E.J.

Abstract
    Temporal variation in a temperate cryptobenthic fish assemblage at the Arrabida Marine Park (Portugal) was assessed by visual surveys during 2002 and 2003. A total of 9596 fish from 11 families and 30 species was recorded. There were no changes in structure or density at the assemblage level between years, whereas diversity changed significantly due to a higher number of abundant species in the second year. A similar seasonal trend was found between years, with a significant overall density increase in autumn. This is partially explained by the arrival of new recruits of some of the most abundant species in the assemblage. Assemblage diversity and structure also changed across seasons. A group of species encompassing Gobius xanthocephalus, Tripterygion delaisi, Parablennius pilicornis, Gobius paganellus, Lepadogaster candollii and Lepadogaster spp. were analysed in detail. The temporal patterns of two of the most abundant species, G. xanthocephalus and T. delaisi, mimicked the overall temporal patterns of the assemblage. We suggest that the inter-annual stability in density of this subtidal fish assemblage may be similar to what has been reported for the intertidal and that strong post-settlement processes are probably shaping this assemblage.

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