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首页> 外文期刊>ICES Journal of Marine Science >Stalked barnacle (Pollicipes pollicipes) harvesting in the Berlengas Nature Reserve, Portugal: temporal variation and validation of logbook data
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Stalked barnacle (Pollicipes pollicipes) harvesting in the Berlengas Nature Reserve, Portugal: temporal variation and validation of logbook data

机译：葡萄牙贝伦加斯自然保护区收获的茎藤壶（Pollicipes pollicipes）：时空变化和记录数据的验证

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摘要

Stalked barnacle {Pollicipes pollicipes) exploitation at the Berlengas Nature Reserve, Portugal, by professional harvesters has been subject to specific regulation since 2000. The only available information on barnacle exploitation there comes from catch reports (logbooks) provided by the harvesters. We evaluated the quality of the logbook information, described the temporal patterns of P. pollicipes fishing effort from 2000 to 2006 based on the logbook data, and modelled the daily fishing effort in relation to variability in oceanographic conditions. Results suggest different levels of reliability for the information contained in the logbooks: (ⅰ) information on the date of harvest seems to be reliable because 83% of the observed harvest dates were also declared; (ⅱ) information on the quantity harvested shows a large discrepancy (mean = 31.8%) between declared and observed amounts, but we believe it can be used to analyse temporal patterns of exploitation, because there was no systematic bias (under- and overreporting was to the same extent). The total quantity of barnacles harvested between 2000 and 2006 (～16 t year~(-1)) was closely related to the effort applied. Daily harvesting effort was considered a function of two predictive variables (significant wave height and tidal range) and of their interaction. Neither the harvesting activity nor the resource itself seems to be at risk of collapse if such levels of pressure are maintained, but efforts should be made to increase surveillance and monitoring within the marine protected area.
机译：自2000年以来，专业收割者在葡萄牙Berlengas自然保护区对茎藤壶（Pollicipes pollicipes）的开采进行了专门的监管。那里有关藤壶开采的唯一可用信息来自收割机提供的渔获报告（日志）。我们评估了航海日志信息的质量，根据航海日志数据描述了2000年至2006年间的体育虾捕捞活动的时间模式，并模拟了与海洋条件变化相关的日常捕捞努力。结果表明，日志中所含信息的可靠性水平不同：（ⅰ）收获日期的信息似乎是可靠的，因为还宣布了83％的观察到的收获日期； （ⅱ）关于收获数量的信息显示，宣布的数量与观察到的数量之间存在很大差异（均值= 31.8％），但我们认为该信息可用于分析开采的时间模式，因为没有系统性的偏见（报告不足和报告过多）在相同程度上）。 2000年至2006年（〜16 t年〜（-1））收获的藤壶总数与所应用的努力密切相关。每天的收获量被认为是两个预测​​变量（显着的波高和潮差）及其相互作用的函数。如果维持这种压力水平，捕捞活动或资源本身似乎都没有崩溃的风险，但应努力加强对海洋保护区的监视和监测。

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  • 来源
    《ICES Journal of Marine Science》 |2010年第1期|19-25|共7页
  • 作者

    David Jacinto; Teresa Cruz; Teresa Silva; Joao J. Castro;

  • 作者单位

    Laboratorio de Ciencias do Mar (CIEMAR), Univenidade de Evora, Apartado 190, 7520-903 Sines, Portugal, and Centro de Oceanografia, Faculdade de Ciencias da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal;

    Laboratorio de Ciencias do Mar (CIEMAR), Univenidade de Evora, Apartado 190, 7520-903 Sines, Portugal, and Centro de Oceanografia, Faculdade de Ciencias da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal Departamento de Biologia, Universidade de Evora, 7002-554 Evora Portugal;

    Laboratorio de Ciencias do Mar (CIEMAR), Univenidade de Evora, Apartado 190, 7520-903 Sines, Portugal, and Centro de Oceanografia, Faculdade de Ciencias da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal;

    Laboratorio de Ciencias do Mar (CIEMAR), Univenidade de Evora, Apartado 190, 7520-903 Sines, Portugal, and Centro de Oceanografia, Faculdade de Ciencias da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal Departamento de Biologia, Universidade de Evora, 7002-554 Evora Portugal;

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  • 关键词

    berlengas; fishery; harvesting; marine reserve; pollicipes; portugal; stalked barnacle;

    机译：贝伦加斯渔业;收获海洋保护区;花粉葡萄牙;藤壶茎;

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