IMIS | Lifewatch regional portal

You are here


[ report an error in this record ]basket (0): add | show Print this page

Assessing the drivers behind structure and diversity of fish assemblages associated with rocky shores in the Galapagos Archipelago
Bruneel, S.; Van Echelpoel, W.; Ho, L.; Raat, H.; Schoeters, A.; De Troyer, N.; Sor, R.; Ponton-Cevallos, J.; Vandeputte, R.; Van der Heyden, C.; De Saeyer, N.; Forio, M.A.E.; Bermúdez, R.; Dominguez-Granda, L.; Luca, S.; Moens, T.; Goethals, P. (2021). Assessing the drivers behind structure and diversity of fish assemblages associated with rocky shores in the Galapagos Archipelago. J. Mar. Sci. Eng. 9(4): 375.
In: Journal of Marine Science and Engineering. MDPI: Basel. ISSN 2077-1312; e-ISSN 2077-1312, more
Peer reviewed article  

Available in  Authors 

Author keywords
    coastal ecosystem; video monitoring; Tropical Eastern Pacific fish assemblage; Galapagos; water quality; anthropogenic pressure

Authors  Top 
  • Sor, R., more
  • Ponton-Cevallos, J., more
  • Vandeputte, R., more
  • Van der Heyden, C.
  • De Saeyer, N., more
  • Forio, M.A.E., more
  • Bermúdez, R.
  • Dominguez-Granda, L.
  • Luca, S., more
  • Moens, T., more
  • Goethals, P., more

    Oceanic islands harbor unique yet fragile marine ecosystems that require evidence-based environmental management. Among these islands, the Galapagos archipelago is well known for its fish diversity, but the factors that structure communities within and between its islands remain poorly understood. In this study, water quality, physical habitats and geographical distance were assessed as potential predictors for the diversity and structure of fish assemblages. Differences in the structure of fish assemblages of the two studied islands (Santa Cruz and Floreana) were most likely driven by temperature and nutrient concentrations. In the relatively highly populated island Santa Cruz, the structure of fish assemblages was more affected by water conditions than physical habitats while the contrary was true for the more pristine area of Floreana. A wide variety of species with different geographical origins were distributed over the different islands, which indicates that most fish species are able to reach the islands of the archipelago. However, temperature gradients and elevated nutrient levels cause large differences in the structure of local fish assemblages. In addition, in Santa Cruz nutrient concentrations were negatively correlated with α diversity. Since pollution is a clear pressure on the fish assemblages of oceanic islands, environmental management of the coastal areas is of paramount importance.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors