| Título: | Trophic structure and energy fluxes around a Mediterranean fish farm |
| Autores: |
Bayle Sempere, Just T. Arreguín Sánchez, Francisco Sánchez Jerez, Pablo Salcido Guevara, Luis A. Fernández Jover, Damián Zetina Rejón, Manuel J. |
| Fecha: |
2012-11-13 2012-11-13 2013-01-10 |
| Publicador: | Elsevier |
| Fuente: |
Ver documento |
| Tipo: | info:eu-repo/semantics/article |
| Tema: |
Aquaculture Impact Mass-balanced models Wild aggregated fishes Management Mediterranean Fish farming Ecopath Zoología |
| Descripción: |
A fish farm in Southeastern Spain was described using an Ecopath mass-balanced model, aimed at characterising its structure, the interactions among ecological groups and the impact of fish farms and fisheries. The model comprised 41 functional groups (including the artificial food input). Comparing consumption and respiration to total system throughput suggests lower energy use in the fish farm, resulting in an accumulation of detritus. The production to total system throughput ratio was low due to the low efficiency of the modelled ecosystem. The connectance and system omnivory indexes were low, typical of a simple or immature food web in terms of structure and dynamics. Artificial food pellets provided energy and nutrients to sustain system function and generate a considerable reserve from which it can draw to meet unexpected perturbations. The study shows the substantial effect the artificial food pellets have on the wild aggregated fishes, which could act to buffer the ecosystem and hence prevent environmental degradation. Conselleria d’Educació, Generalitat Valenciana. MARTORRES. The study forms part of the ACUFISH project (Department of Marine Science and Applied Biology, University of Alicante) and was funded by Spanish Ministry of Science Grant MYCT-REN2003-00794. |
| Idioma: | Inglés |
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