Estimated enhancement of fish production resulting from restoring oyster reef habitat: quantitative valuation
Estimated enhancement of fish production resulting from restoring oyster reef habitat: quantitative valuation
复制标题
DOI：
10.3354/meps264249
复制
发表时间：
2003-01-01
影响因子：
2.5
通讯作者：
Powers, SP
中科院分区：
文献类型：
--
作者：
Peterson, CH;Grabowski, JH;Powers, SP
我们回顾了在美国东南部牡蛎礁和附近沉积物栖息地提供鱼类和大型移动的甲壳类动物丰度定量测量的研究。对于每一个物种，我们比较了牡蛎礁和沉积底部的大小（年龄）类的密度，作为一种手段，估计在何种程度上恢复牡蛎礁沉积底部可以增加丰度。通过应用已公布的每个物种的增长率和经验数据和特定年龄的生存公布的信息相结合的信息，我们计算了每单位面积的产量增加的鱼类和大型移动的甲壳类动物预期从牡蛎礁栖息地。对于这个计算，我们给了珊瑚礁栖息地的预期寿命生产的物种，其招聘被判断为限制的牡蛎礁面积的基础上，几乎独家协会的新兵珊瑚礁的充分信贷。对于牡蛎礁丰度仅略有增加的物种，我们使用肠道内容物数据和自然历史信息相结合，将珊瑚礁的产量归功于与珊瑚礁相关的猎物的消费。分析和计算的结合表明，在美国东南部恢复10平方米的牡蛎礁，在珊瑚礁的功能寿命内，预计每年可增加2.6公斤的鱼类和大型移动的甲壳类动物产量。由于珊瑚礁是生物生成的，可以自我维持，因此，不受海底渔具干扰的珊瑚礁的寿命受到强烈风暴或沉积作用的限制。一个持续20至30年的珊瑚礁预计将使鱼类和大型移动的甲壳类动物的产量增加38至50公斤10米（-2）的累积量，折算到今天的价值。这组计算假设牡蛎礁栖息地现在限制了美国东南部与珊瑚礁有关的鱼类和甲壳类动物的生产。这种假设似乎是合理的基础上，紧密的协会，这么多的鱼类与珊瑚礁依赖的猎物，和枯竭的珊瑚礁栖息地在过去的世纪。
We reviewed studies providing quantitative measurements of abundance of fishes and large mobile crustaceans on oyster reefs and on nearby sedimentary habitat in the southeast United States. For each species, we compared density by size (age) class on oyster reefs and sedimentary bottom as a means of estimating the degree to which restoration of oyster reef on sedimentary bottom could augment abundances. By applying published information on growth rates of each species and a combination of empirical data and published information on age-specific survivorship, we calculated the per-unit-area enhancement of production of fishes and large mobile crustaceans expected from the addition of oyster reef habitat. For this calculation, we gave the reef habitat full credit for the expected lifetime production of species whose recruitment was judged to be limited by the area of oyster reefs based on nearly exclusive association of recruits to reefs. For species that were only modestly enhanced in abundance by oyster reefs, we gave the reef credit for the fraction of production that is derived from consumption of reef-associated prey, using a combination of gut content data and natural history information. This combination of analyses and calculations revealed that 10 m(2) Of restored oyster reef in the southeast United States is expected to yield an additional 2.6 kg yr(-1) of production of fish and large mobile crustaceans for the functional lifetime of the reef. Because the reef is biogenic and self-sustaining, the lifetime of a reef protected from bottom-disturbing fishing gear is limited by intense storms or sedimentation. A reef lasting 20 to 30 yr would be expected to augment fish and large mobile crustacean production by a cumulative amount of 38 to 50 kg 10 m(-2), discounted to present-day value. This set of calculations assumes that oyster reef habitat now limits production of reef-associated fish and crustaceans in the southeast United States. This assumption seems reasonable based on the tight associations of so many fishes with reef-dependent prey, and the depletion of reef habitat over the past century.