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首页> 外文期刊>ICES Journal of Marine Science >Responses to changes in sprat abundance of common tern breeding numbers at 12 colonies in the Firth of Forth, east Scotland
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Responses to changes in sprat abundance of common tern breeding numbers at 12 colonies in the Firth of Forth, east Scotland

机译：苏格兰东部福斯峡湾12个殖民地常见燕鸥繁殖数量变化对繁殖的响应

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摘要

Breeding numbers collected in 12 common tern Sterna hirundo colonies in the Firth of Forth, Scotland, along with sprat landings data for the area, were used to investigate how the dynamics of a shared prey resource may affect different colonies in a region. Between 1969 and 2010, breeding numbers fluctuated much more at individual colonies than across the region as a whole, with the largest colonies showing opposite trends, suggesting relocation by birds. This indicates that data from individual colonies may be less useful than regional numbers when using seabirds as indicators. Tern breeding numbers in the region were reduced when the sprat stock (Sprattus sprattus) collapsed in the early 1980s after targeted fishing, but recovered during recent decades when the stock was unfished. This should be considered for reopening the Firth of Forth sprat fishery, as well as in the management of other shared prey stocks.
机译：在苏格兰福斯峡湾的12个常见的斯特纳氏无脊椎动物殖民地中收集的育种编号，以及该地区的鲱鱼着陆数据，用于研究共享猎物资源的动态如何影响该地区的不同殖民地。在1969年至2010年之间，单个殖民地的繁殖数量波动幅度大于整个地区的波动幅度，最大的殖民地呈相反趋势，表明鸟类迁徙。这表明，在使用海鸟作为指标时，来自单个殖民地的数据可能没有区域数字有用。当1980年代初有针对性捕捞的西鲱种群（Sprattus sprattus）倒闭时，该地区的燕鸥繁殖数量减少，但在近几十年未捕捞种群的情况下恢复了。重新开放福斯小插曲渔业以及其他共享猎物种群的管理应考虑这一点。

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