Habitat use and movement of the mummichog (Fundulus heteroclitus) in a restored salt marsh
Habitat use and movement of the mummichog (Fundulus heteroclitus) in a restored salt marsh
复制标题
修复后的盐沼中木米猪（Fundulusheteroclitus）的栖息地利用和活动
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
K. Able
中科院分区：
文献类型：
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作者：
S. Teo;K. Able
乳鼠是美国东海岸盐沼生态系统中含量最丰富的大型动物之一。1998年4-11月，我们在一个恢复的沼泽(原盐碱干草养殖场)和邻近的一条小溪中，测定了年幼鼠(YoY)和成年鼠的栖息地利用和活动模式，以扩大我们对该物种生态的了解，并评价恢复的成功。在研究地点内，确定了四种主要的鱼类栖息地类型(大型一级自然小溪、二级创造小溪、线性排水沟和沼泽表面)。使用编码线标签的相对丰度和标记和重新捕获的模式被用来确定这些栖息地类型中物种的栖息地利用、潮汐运动、栖息地范围和地点保真度。用钢丝网诱捕和标记了14,784条鱼，从20-100 mm SL不等，重新捕获1,521条鱼(10.3%)。各种渔具被用来试图在所有生境类型中重新捕获鱼类，包括钢丝网陷阱、推网和水獭拖网。根据标记鱼类的丰度和重新捕获，YoY和成鱼主要使用创建的小溪的浅潮下和潮间带区域、潮间带排水沟和恢复的沼泽的沼泽表面，但没有使用更大的一级自然小溪。在退潮时，在形成的小溪的潮下区域发现了大量的细菌；然后这些细菌在洪水泛滥的时候移到了沼泽表面。海拔和水文周期似乎影响了沼泽地表面的微尺度利用。我们估计，涨潮时成体和大型YoY(20-100 mm SL)的栖息地范围为15公顷，比之前量化的范围要大得多。在退潮时，造出的小溪有很强的场地保真度。粘鼠的栖息地利用和运动模式似乎与自然沼泽的报道相似。再加上在这次恢复中对该物种的取食、生长和生产的其他研究结果，该物种似乎对恢复做出了很好的反应。
The mummichog,Fundulus heteroclitus, is one of the most abundant macrofaunal components of salt marsh ecosystems along the east coast of the United States. During April–November 1998, we determined the habitat use and movement patterns of young-of-the-year (YOY) and adult mummichogs in a restored marsh, formerly a salt hay farm, and an adjacent creek in order to expand our understanding of the ecology of the species and evaluate the success of the restoration. Four major fish habitat types (large first-order natural creek, second-order created creek, linear drainage ditch, and marsh surface) were identified within the study site. Patterns of relative abundance and mark and recapture using coded wire tags were used to determine the habitat use, tidal movements, home range, and site fidelity of the species within these habitat types. A total of 14,784 fish, ranging from 20–100 mm SL, were captured with wire mesh traps and tagged, and 1,521 (10.3%) fish were recaptured. A variety of gears were used to attempt to recapture fish across all habitat types, including wire mesh traps, push nets, and otter trawls. Based on abundance and recaptures of tagged fish, the YOY and adults primarily used the shallow subtidal and intertidal areas of the created creek, the intertidal drainage ditches, and the marsh surface of the restored marsh but not the larger, first-order natural creek. At low tide, large numbers were found in the subtidal areas of the created creek; these then moved onto the marsh surface on the flooding tide. Elevation, and thus hydroperiod, appeared to influence the microscale use of the marsh surface. We estimated the home range of adults and large YOY (20–100 mm SL) to be 15 ha at high tide, which was much larger than previously quantified. There was strong site fidelity to the created creek at low tide. The habitat use and movement patterns of the mummichog appeared similar to that reported for natural marshes. Coupled with the results of other studies on the feeding, growth, and production of this species in this restoreh, the species appeared to have responded well to the restoration.