期刊
REGIONAL STUDIES IN MARINE SCIENCE
卷 7, 期 -, 页码 63-71出版社
ELSEVIER
DOI: 10.1016/j.rsma.2016.05.007
关键词
Littoral zone; Diversity; Tides; Wrack; Pocket beaches; Light
资金
- Scotland Island Community
This study targets surface activity of mobile macrofauna on pocket tidal beaches, undergoing different human use. We considered two beaches in Pittwater (NSW, Australia): Tennis beach on Scotland Island features artificial structures and provided with artificial lighting, while Portuguese beach (Ku-Ring-Gai Chase National Park) is only accessible by boat and has no artificial structures. At each site we placed pitfall traps across the littoral zone, with replicates at an opposite tidal period. Traps were kept active for 24 hours and emptied every three hours. The beach-hopper Platorchestia smithi was dominant in abundance at both sites; however Portuguese had a higher species number, including the burrowing isopod Actaecia bipleura. Circular summaries and behavioural models were calculated for abundant species. Wefound two different activity peaks for adults (nocturnal) and juveniles (sunrise) of P. smithi, consistent across sites, and a complex, tide-related pattern for A. bipleura. We also remarked the relevance of wrack presence on the littoral: this factor was found to modulate the activities of specific categories of macrofauna, such as females and juveniles of P. smithi, and A. bipleura. Results finally indicated no effect of artificial lighting on surface activity of abundant beach species. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据