دورية أكاديمية
Immediate effect of intertidal non-mechanised cockle harvesting on macrobenthic communities: a comparative study
| العنوان: | Immediate effect of intertidal non-mechanised cockle harvesting on macrobenthic communities: a comparative study |
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| المؤلفون: | Francisco Miguel Sousa Leitão, Miguel Baptista Gaspar |
| المصدر: | Scientia Marina, Vol 71, Iss 4, Pp 723-733 (2007) |
| بيانات النشر: | Consejo Superior de Investigaciones Científicas, 2007. |
| سنة النشر: | 2007 |
| المجموعة: | LCC:Aquaculture. Fisheries. Angling |
| مصطلحات موضوعية: | cerastoderma edule, cockle, fishing effect, hand dredging, harvesting knife, ria formosa, Aquaculture. Fisheries. Angling, SH1-691 |
| الوصف: | In Ria Formosa cockles (Cerastoderma edule) have traditionally been harvested with a harvesting-knife (HK). However, over the last six years there has been an increase in the use of a hand-dredge (HD) to exploit cockle beds. A comparative study on the impact of these harvesting methods on the benthic macrofauna was undertaken with the aim of evaluating the possible introduction of the hand-dredge in the fishery. Macrofaunal mortality was very low regardless of the gear. However, the total mortality resulting from using the HK was superior to the one observed for the HD. For the same fishing time the hand-dredge covers an area approximately five times greater that the one covered by the knife, with the former yielding 5 times the catch of the latter. Consequently, the use of hand-dredges increases the fishing effort, which may lead to the overexploitation of the cockle populations. Our results revealed that the immediate effect of both gears on macrobenthic communities was similar and minimal. Therefore, we believe that introducing the hand-dredge in the cockle fishery should only be authorised if other management measures, such as daily quotas, closed areas and limiting the number of fishing licenses, are implemented. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 0214-8358 1886-8134 |
| العلاقة: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/226Test; https://doaj.org/toc/0214-8358Test; https://doaj.org/toc/1886-8134Test |
| DOI: | 10.3989/scimar.2007.71n4723 |
| الوصول الحر: | https://doaj.org/article/d056c991fc5e4db38ef34dae16fc7460Test |
| رقم الانضمام: | edsdoj.056c991fc5e4db38ef34dae16fc7460 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 02148358 18868134 |
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| DOI: | 10.3989/scimar.2007.71n4723 |