کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4541983 1626704 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bioturbation activity by the grapsid crab Helice formosensis and its effects on mangrove sedimentary organic matter
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
پیش نمایش صفحه اول مقاله
Bioturbation activity by the grapsid crab Helice formosensis and its effects on mangrove sedimentary organic matter
چکیده انگلیسی

Grapsid crabs are one of the most abundant and potentially the most important group of macrofauna inhabiting mangrove forests. A field study was conducted in the Manko wetland (Okinawa Island, southern Japan) to investigate how the burrowing crab Helice formosensis affects the sedimentary fatty acid (FA) and physicochemical characteristics of subtropical mangrove sediments. Multi-dimensional scaling (MDS) results from FA profiles revealed clear differences between burrow compartments and sediments with and without crabs. The impacts of burrowing were demonstrated by higher percentages of bacterial, vascular plant, and macroalgal FA markers in the burrow compartments and crab sediment areas. Conductivity and redox potential were significantly higher in sediments of the burrow opening shaft than in the burrow chamber. We found a similar pattern in surface sediments with crabs, but not in surface sediments without crab habitats. These results suggest that H. formosensis significantly influences the physicochemical properties, FA composition, and organic matter profiles of its surrounding environment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Estuarine, Coastal and Shelf Science - Volume 73, Issues 1–2, June 2007, Pages 316–324
نویسندگان
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