%0 Journal Article
%T Impacts of burrowing crab on the dissolved inorganic nitrogen exchange at the sediment-water interface in the intertidal flat of the Yangtze estuary<br>蟹类底栖动物对河口潮滩无机氮界面交换的影响
%A LIU Jie
%A CHEN Zhen-lou
%A XU Shi-yuan
%A WANG Dong-qi
%A ZHENG Xiang-min
%A <br>刘杰
%A 陈振楼
%A 许世远
%A 王东启
%A 郑祥民
%J 海洋科学
%D 2008
%I 
%X The burrowing crabs are important bioturbators of intertidal flats. Selecting the Yangtze estuary coastal and island high tidal flat wetland as a study area, based on the integrated method of field investigation and experimental simulation, the impacts of macrobenthos crab Sesarma denaan sp. activities on the DIN exchange in the sediment-water interface and nitrogen biogeochemical cycling of tidal flat are analyzed and discussed simply in this paper. It is revealed that the burrowing benthos crab activities exert an outstanding reconstruction on tidal flat morphology. For example, in high crab dense zone the cave area accounts for 2%-3% of flat and the dry weight of burrowing mound can reach 1 to 1.5 kg per square meter. When high tidal flat is submerged, intensive crab Sesarma denaan sp. activities can cause a very large release of DIN by virtue of excretion, burrowing, bioturbation and sediment resuspension. Developed cave in sediment and continual turnover of sediment by crab can improve an organic matter remineralization and ammonification, consequently reworking the DIN vertical profile in sediment.
%K Yangtze estuary
%K intertidal sediments
%K crab
%K DIN
%K impacts<br>长江口
%K 潮滩沉积物
%K 蟹类底栖动物
%K 无机氮
%K 影响
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=2D9C75573FA3E416&jid=DFE7B94EB76B8F26135C9890832CEF6A&aid=A3A580BBDD244D9925B7A5F7C2A6D238&yid=67289AFF6305E306&vid=9971A5E270697F23&iid=0B39A22176CE99FB&sid=F3090AE9B60B7ED1&eid=7801E6FC5AE9020C&journal_id=1000-3096&journal_name=海洋科学&referenced_num=1&reference_num=17