نتایج جستجو برای: bottom trawling
تعداد نتایج: 60372 فیلتر نتایج به سال:
This study aimed to investigate otolith in Rachycentron canadum in the Persian Gulf and Oman Sea. Sampling lasted from March 2014 to April 2015 in Khouzestan to Sistan and Baloochestan waters. During this period 30 specimens of R. canadum were caught and studied. Trawling time was 2-2½ hours and trawling depth was considered as 10-100 m daily. All the fish were identified and their otolith was ...
This study aimed to investigate otolith in Rachycentron canadum in the Persian Gulf and Oman Sea. Sampling lasted from March 2014 to April 2015 in Khouzestan to Sistan and Baloochestan waters. During this period 30 specimens of R. canadum were caught and studied. Trawling time was 2-2½ hours and trawling depth was considered as 10-100 m daily. All the fish were identified and their otoli...
The assessment of fish stocks is often dependent on scientific trawl fisheries surveys, which are both invasive and costly. analysis environmental DNA (eDNA) from water samples regarded as a non-invasive cost-effective alternative, but meaningful performance evaluations required for wider application. goal this study was to comparatively analyze newly developed, more sensitive real-time PCR bas...
Biological trait analysis has become a popular tool to infer the vulnerability of benthic species trawling-induced disturbance. Approaches using multiple traits are being developed, but their generic relevance across faunal components and geographic locations remains poorly tested, importance confounding effects recognised. This study integrates biological that responsive instantaneous trawling...
Marine biodiversity stewardship requires costly and time-consuming capture-based monitoring techniques, which limit our understanding of the distribution status marine populations. Here, we reconstruct catch demersal community composition in a set 24 fishing sites central Tyrrhenian Sea by gathering environmental DNA (eDNA) aboard commercial bottom-trawl vessels. We collected genetic material f...
Abstract As industrialized fishing activities have moved into deeper water, the recognition of Vulnerable Marine Ecosystems (VMEs) has become important for protection deep-sea. Our limited knowledge on past and present distribution VMEs hinders our ability to manage bottom fisheries effectively. This study investigated whether accounting intensity (derived from Vessel Monitoring System records)...
The web harbors a large number of communities -groups of content-creators sharing a common interest -each of which manifests itself as a set of interlinked web pages. Newgroups and commercial web directories together contain of the order of 20000 such communities; our particular interest here is on emerging communities -those that have little or no representation in such fora. The subject of th...
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