Forcada Aitor, Bayle-Sempere Just T, Valle Carlos, Sánchez-Jerez Pablo
Unidad de Biología Marina, Departamento de Ciencias del Mar y Biología Aplicada, Universidad de Alicante, P.O. Box 99, Edificio Ciencias V, Campus de San Vicente del Raspeig, E-03080 Alicante, Spain.
Mar Environ Res. 2008 Dec;66(5):536-47. doi: 10.1016/j.marenvres.2008.08.003. Epub 2008 Aug 17.
Marine protected areas (MPAs) could be useful as fisheries management tools for the exportation of pelagic eggs, larvae and adult fish. A decreasing gradient of fish biomass across MPAs boundary may indicate export. We determine whether gradients of decreasing biomass of fish assemblage occurred in Tabarca Marine Reserve over two habitats with different continuity across the boundaries, to test if the patchy nature of the marine environment might act as a barrier for the fish export. In general, significant decreasing gradients in total fish biomass and biomass of some species were observed on P. oceanica and rocky substrates, independently of their different continuity through the reserve boundaries. Changes in the multivariate structure of the fish assemblage were correlated with the distance from integral reserve. All of these results support the hypothesis that the exportation of adult fish from Tabarca Marine Reserve occurs, and this process may influence the surrounding fished areas.
海洋保护区（MPAs）作为渔业管理工具，对于远洋鱼卵、幼鱼和成鱼的输出可能是有用的。跨海洋保护区边界鱼类生物量的递减梯度可能表明有输出情况。我们确定了在塔巴卡海洋保护区内，跨越边界的两个具有不同连续性的栖息地中，鱼类群落生物量是否出现递减梯度，以检验海洋环境的斑块性质是否可能成为鱼类输出的障碍。总体而言，在海洋松藻和岩石基质上，观察到总鱼类生物量和某些物种生物量存在显著递减梯度，与它们穿过保护区边界的不同连续性无关。鱼类群落的多变量结构变化与距完整保护区的距离相关。所有这些结果都支持这样的假设，即塔巴卡海洋保护区有成鱼输出，且这一过程可能会影响周边的捕捞区域。
