Distinct community dynamics at two artificial habitats in a recreational marina.
Distinct community dynamics at two artificial habitats in a recreational marina.
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休闲码头两个人工栖息地的独特群落动态。
DOI：
10.1016/j.marenvres.2016.09.010
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发表时间：
2016
影响因子：
3.3
通讯作者：
G. M. Dias
中科院分区：
文献类型：
--
作者：
F. T. Oricchio;Gabriela Pastro;E. A. Vieira;A. Flores;F. Z. Gibran;G. M. Dias
海岸线上的人造设施改变了水的循环和沉积动态，这可能会影响海洋底栖和远洋群落的结构。为了测试与休闲码头相关的环境异质性如何影响污垢群落的结构和海底-中上层联系，我们进行了一项实验，在两个人工生境中评估了捕食对招募和群落结构的影响：码头内是一个平静的水域，经常受到划船活动的干扰；防波堤是一个更具水动力的区域。我们还利用视觉普查和视频片段描述了这两个地区的捕食压力和捕食者的身份。在码头内，海鞘和锯齿虫的招募在某些情况下受到限制，但苔藓虫不受限制，这可能是因为水循环减少。在这两个区域，捕食主要是由银鱼Diplodusargenteus进行的捕食降低了双壳类海囊类的存活率，但防波堤内的捕食强度是码头内的40倍。虽然这两个人工栖息地不一定支持不同的群落，但低补充量加上码头内的弱捕食和较不活跃的环境，可能意味着较低的复原力和更容易受到干扰。
Man-made facilities along coastlines modify water circulation and sedimentation dynamics which can affect the structure of marine benthic and pelagic communities. To test how environmental heterogeneity associated with a recreational marina affects the structure of the fouling community and the benthic-pelagic link, we conducted an experiment in which predation effects on recruitment and community structure were assessed in two artificial habitats: inside the marina, an area of calm waters and often disturbed by boating activity, and the breakwater, a more hydrodynamic area. Using visual censuses and video footages we also described the predation pressure and the identity of predators on the two areas. Inside the marina, the recruitment of ascidians and serpulids, but not of bryozoans, was restricted in some occasions, possibly due to reduced water circulation. Predation, mainly by the silver porgy fishDiplodusargenteus, reduced the survivor of didemnid ascidians on both areas, but predation intensity was 40 times higher in the breakwater than inside the marina. While the two artificial habitats did not necessarily support distinct communities, low recruitment coupled to weak predation inside the marina, a less dynamic environment, likely imply lower resilience and more susceptibility to disturbance.
影响因子：
4.7
作者：
Joullié,MadeleineM;Leonard,MichaelS;Portonovo,Padma;Liang,Bo;Ding,Xiaobin;LaClair,JamesJ
通讯作者：
LaClair,JamesJ