کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6303940 | 1618414 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of mangrove structure on fish distribution patterns and predation risks
ترجمه فارسی عنوان
اثرات ساختار مانگرو بر الگوهای توزیع ماهی و خطرات شکار
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کلمات کلیدی
آزمایش میدانی، مجموعه ماهی، سحر آمیز ریسک جبرانی، ساختار ریشه،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
چکیده انگلیسی
This study examined the effects of mangrove structure on fish distribution patterns and predation risks in southern Japan, utilizing field experiments in which artificial units mimicked mangrove root structure and canopy shade in a mangrove estuary. Fishes responded strongly to the different levels of root structure complexity but not to canopy shade, fish species richness and abundance being consistently higher in the units with roots than in those without roots, regardless of shade presence/absence. With increasing root density, fish abundance increased considerably, although with decreasing fish body size. A tethering experiment, employing the above units and the most abundant local fish Apogon amboinensis as representative of small fishes, revealed that the predation mortality rates of small fishes decrease with increasing root density. The results suggested that the sheltering effects provided by root structure against predators may be one of the most important factors determining the distribution patterns of mangrove-associated fishes, and at least partly explain the greater abundance of small-sized fishes in microhabitats with greater root densities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Experimental Marine Biology and Ecology - Volume 461, December 2014, Pages 216-225
Journal: Journal of Experimental Marine Biology and Ecology - Volume 461, December 2014, Pages 216-225
نویسندگان
Kusuto Nanjo, Hiroyoshi Kohno, Yohei Nakamura, Masahiro Horinouchi, Mitsuhiko Sano,