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首页> 外文期刊>African Journal of Aquatic Science >Nature and pattern of lagoon fisheries resource utilisation and their implications for waterbird management in coastal Ghana
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Nature and pattern of lagoon fisheries resource utilisation and their implications for waterbird management in coastal Ghana

机译：加纳沿海泻湖渔业资源利用的性质和模式及其对水鸟管理的影响

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摘要

Seasonal patterns in human fisheries resource utilisation and the capture characteristics of fish, swimming crabs and land crabs harvested from four coastal lagoons in Ghana between September 2005 and August 2007 are described. These are discussed in relation to sustainable management of the lagoons' fisheries for both human and waterbird use. With the exception of small pelagic foraging fish-eating birds, human fishing practices in the lagoons were in direct competition with crab- and fish-eating birds, because of the overlap of same-sized fish and crabs, and also in indirect competition because many of the exploited fish and crabs were immature. Fishing practices were also in direct competition with food foraging by invertebrate-eating birds. Intense exploitation of swimming crabs was linked to the use of drag nets, in comparison to the exclusive use of cast nets in some lagoons. In order to reduce the incidence of waterbird-human interactions and conflict during the energy-demanding phase of the birds' non-breeding season, it is recommended that the practice of closed seasons be extended to include crab fisheries and be strictly enforced at all Ramsar sites on the Ghanaian coast.
机译：描述了2005年9月至2007年8月期间从加纳的四个沿海泻湖收获的人类渔业资源利用的季节性模式以及捕获的鱼类，游泳蟹和陆地蟹的捕获特征。讨论了有关泻湖渔业对人类和水鸟的可持续管理。除了小型中上层觅食的食鱼鸟类外，泻湖中的人类捕捞活动与同食蟹和食鱼鸟类直接竞争，因为同等大小的鱼和蟹重叠，并且由于许多食蟹蟹的重叠而间接竞争被剥削的鱼和蟹中有一半未成熟。捕捞活动也与无脊椎动物鸟类的觅食直接竞争。与在一些泻湖中专门使用铸网相比，对游泳蟹的大规模开发与拖网的使用有关。为了减少在鸟类非繁殖季节的能量需求阶段水鸟与人的互动和冲突的发生率，建议将休渔季节的做法扩大到包括蟹类渔业，并在所有拉姆萨尔邦严格执行加纳海岸上的遗址。

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