Geographic Variability in Salt Marsh Flooding Patterns may Affect Nursery Value for Fishery Species
Geographic Variability in Salt Marsh Flooding Patterns may Affect Nursery Value for Fishery Species
复制标题
DOI：
10.1007/s12237-011-9463-x
复制
发表时间：
2012-03-01
影响因子：
2.7
通讯作者：
Baker, Ronald
中科院分区：
文献类型：
--
作者：
Minello, Thomas J.;Rozas, Lawrence P.;Baker, Ronald
盐沼的泛滥控制了水生生物进入沼泽表面的机会，并可能调节了幼鱼物种栖息地的价值和使用。我们研究了沼泽访问的地理变异性，通过测量在15个互花米草沼泽在美国东南部之间的南德克萨斯州和下切萨皮克湾潮汐洪水的特点。洪水持续时间和洪水频率与平均低水位和潮差的沼泽边缘的海拔高度。2006-2008年，德克萨斯州（阿兰萨斯湾91.5%）和北卡罗来纳州（帕姆利科湾89.3%）的年平均洪水持续时间最长，路易斯安那州廷巴利埃湾（54%）以及下卡罗莱纳州和格鲁吉亚（55-57%）的年平均洪水持续时间最短。我们使用公布的数据，蓝蟹和对虾的密度作为衡量栖息地选择，有一个沼泽选择和洪水持续时间之间的正相关关系。
Flooding of salt marshes controls access to the marsh surface for aquatic organisms and likely regulates the value and use of this habitat for juvenile fishery species. We examined geographic variability in marsh access by measuring tidal flooding characteristics in 15 Spartina alterniflora marshes in the southeastern US between South Texas and lower Chesapeake Bay. Flooding duration and flooding frequency were correlated with the elevation of the marsh edge in relation to mean low water and with the tidal range. Mean annual flooding duration over the years 2006-2008 was highest in Texas (91.5% in Aransas Bay) and North Carolina (89.3% in Pamlico Sound) and lowest in Timbalier Bay, LA (54%) and the lower Carolinas and Georgia (55-57%). We used published data on densities of blue crabs and penaeid shrimps as a measure of habitat selection, and there was a positive relationship between marsh selection and flooding duration.