کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9481816 | 1327237 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modifications to a plumb staff beam trawl for sampling uneven, complex habitats
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Modifications to a plumb staff beam trawl for sampling uneven, complex habitats Modifications to a plumb staff beam trawl for sampling uneven, complex habitats](/preview/png/9481816.png)
چکیده انگلیسی
A small (5.1Â m footrope) plumb staff beam trawl was modified to sample demersal fauna in uneven, complex habitats. Several SCUBA dives were made to observe and measure the modified trawl while being towed. Additionally, an underwater camera system was used to observe footrope contact with the bottom at varying amounts of scope ratio on several bottom types including pure sand, mixed sand with emergent biotic structure, sand with shell fragments, mud with shell fragments, and gravel and shell bedforms. Net modification tests were followed by field collections at 55 stations in which 49 species of fish were captured. The modified beam trawl appears to be an effective tool for sampling demersal fishes in a variety of habitats, including those with emergent biotic structure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fisheries Research - Volume 71, Issue 2, February 2005, Pages 247-254
Journal: Fisheries Research - Volume 71, Issue 2, February 2005, Pages 247-254
نویسندگان
Alisa A. Abookire, Craig S. Rose,