Does Loss of Salt Marsh Vegetation Caused by a Native Grapsid Crab Improve Habitat Suitability for the Atlantic Mud Fiddler (Uca Pugnax)
Does Loss of Salt Marsh Vegetation Caused by a Native Grapsid Crab Improve Habitat Suitability for the Atlantic Mud Fiddler (Uca Pugnax)
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本土草蟹引起的盐沼植被丧失是否会改善大西洋泥提琴手（Uca Pugnax）的栖息地适宜性
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发表时间：
2015
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影响因子：
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通讯作者：
Stephen M. Smith
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作者：
Stephen M. Smith
先前的许多研究表明，大西洋沼泽招潮蟹 Uca pugnax（Smith，1870）的丰富度与植被覆盖呈正相关和负相关。在科德角国家海岸沼泽（美国马萨诸塞州），与健康的植被地区相比，由于 Sesarma reticulatum（Say，1817）（即紫色沼泽蟹）的活动，盐沼植被地区的 U. pugnaxis 丰度已经减少。然而，这种关系尚未经过实验检验。在这项研究中，U. pugnaxburrows 的处理方法包括：1）去除植被和沉积物，2）自然发生的没有植被的顶枯地区，3）通过砍伐去除植被，以及 4）完整植被。结果表明，U. pugnax可能更喜欢开阔、无植被且基质较软的栖息地。因此，S. reticulatum 可能会促进 U. pugnaxin 开放区域的扩散，这会对许多其他生态系统过程产生影响。
The abundance of Uca pugnax(Smith, 1870), the Atlantic marsh fiddler crab, has been shown to be both positively and negatively related to vegetation cover in a number of previous studies. In Cape Cod National Seashore marsh (Massachusetts, USA), it appears that the abundance of U. pugnaxis high in areas where salt marsh vegetation has died back as a result of Sesarma reticulatum(Say, 1817), the purple marsh crab, activity compared with healthy, vegetated areas. However, this relationship has not been experimentally tested. In this study U. pugnaxburrows were enumerated in treatments consisting of 1) vegetation and sediment removal, 2) naturally occurring dieback areas where vegetation is absent, 3) vegetation removal by cutting, and 4) intact vegetation. The results indicate that U. pugnaxmay prefer open, unvegetated habitats with softer substrates. The proliferation of U. pugnaxin open areas could therefore be facilitated by S. reticulatum, which has consequences for a number of other ecosystem processes.