Thethered Calcinus hermit crabs remaining on sand vs. Millepora coral from Virgin Islands National Park in the Great Lameshure Bay, St. John, US Virgin Island from 2010-2011 (St. John LTREB project)

<p>The study was conducted in St. John within the Virgin Islands National Park (VINP). The majority of our analyses focused on the shallow fringing reefs of Great Lameshur Bay and was completed in 2010 and 2011. Surveys in July and August 2010 focused on the natural history of the association by evaluating <em>Millepora</em> spp. for colony size and population density of <em>C. tibicen</em>. Surveys were repeated between June 2011 and August 2011 and expanded to the north and east shores of St. John to test the generality of the observations initially made in 2010. In 2011, manipulative experiments were conducted to test the functional basis of the <em>Millepora</em>-<em>Calcinus</em> association and evaluate whether it could be described as a commensalism.</p>

<p>Related datasets:<br />
<a href=\"http://www.bco-dmo.org/dataset/523358\">crab abundance and coral size</a><br />
<a href=\"http://www.bco-dmo.org/dataset/523441\">crab displacement behavior</a><br />
<a href=\"http://www.bco-dmo.org/dataset/523481\">crab nocturnal surveys</a></p>

<p>These data were published in&nbsp;Brown D, Edmunds PJ. (2013) The hermit crab&nbsp;<em>Calcinus tibicen</em>&nbsp;lives commensally on&nbsp;<em>Millepora</em>&nbsp;spp. in St. John, United States Virgin Islands.&nbsp; Coral Reefs 32.1: 127-135.</p>

<p><a href=\"http://dmoserv3.whoi.edu/data_docs/St_John_LTREB/Millepora_Calcinus_Data _for_2012_CoralReefs_BCODMO.xls\" target=\"_blank\">Download complete data for this publication (Excel file)</a></p>

<p>本研究于美属维尔京群岛国家公园（Virgin Islands National Park, VINP）的圣约翰岛开展。本研究的多数分析聚焦于大拉梅舒尔湾的浅滩边缘礁，相关工作于2010年与2011年完成。2010年7月至8月的调查通过评估多孔螅属（<em>Millepora</em>）物种的群落规模以及泰比森钙寄居蟹（<em>Calcinus tibicen</em>）的种群密度，探究二者共生关系的自然历史特征。2011年6月至8月，研究团队重复了调查工作，并将调查范围扩展至圣约翰岛的北海岸与东海岸，以验证2010年初始观测结果的普适性。2011年，研究人员开展了控制性实验，以验证多孔螅属-钙寄居蟹属（<em>Calcinus</em>）共生关系的功能基础，并评估该关系是否可被归类为共栖关系。</p>
<p>相关数据集:<br />
<a href="http://www.bco-dmo.org/dataset/523358">螃蟹丰度与珊瑚尺寸</a><br />
<a href="http://www.bco-dmo.org/dataset/523441">螃蟹移动行为</a><br />
<a href="http://www.bco-dmo.org/dataset/523481">螃蟹夜间调查</a></p>
<p>本数据集相关研究成果已发表于：Brown D, Edmunds PJ. (2013) 《寄居蟹泰比森钙寄居蟹（<em>Calcinus tibicen</em>）共栖于美属维尔京群岛圣约翰岛的多孔螅属（<em>Millepora</em>）物种之上》，《珊瑚礁》（<em>Coral Reefs</em>）32卷第1期：127-135。</p>
<p><a href="http://dmoserv3.whoi.edu/data_docs/St_John_LTREB/Millepora_Calcinus_Data_for_2012_CoralReefs_BCODMO.xls" target="_blank">下载本研究的完整数据集（Excel文件）</a></p>