Spatial and temporal patterns in barnacle settlement rate along a southern California rocky shore
Spatial and temporal patterns in barnacle settlement rate along a southern California rocky shore
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南加州岩石海岸藤壶沉降率的时空模式
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发表时间：
1994
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影响因子：
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通讯作者：
J. Pineda
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作者：
J. Pineda
在美国加利福尼亚州拉霍亚的 Dike Rock 的 5 个相距 50 至 250 米的地点监测藤壶沉降。 Chthamalus spp.和聚合足足的沉降在这些地点具有空间相关性。在地点内，两个物种的定居是相关的。这些结果支持所有地点和两个物种的共同陆上幼虫运输事件的假设。其他时空模式形成鲜明对比：1 个峰值占聚合物沉降的大部分，而 Chthamalus spp 有 5 个类似大小的峰值。在 2 个地点，在潮间带的 2 个高度处安装了沉降板； Chthamalus spp.两个高度处的沉降量相似，而各站点的沉降量差异相对较大。这种空间模式可能是由影响聚合物沉降的更强的行为成分造成的。这些结果表明，在 100 m 的尺度上，沉降率的时间变化可能与幼虫池和物理运输过程有关，而空间可利用性可能与行为反应和基质可用性有关。 Chthamalus spp.在岩石被不合适的沙质基质包围的地点沉降较高，可能是因为可用基质上的沉降加剧，而适宜沉降总面积相对较少。为了测试这一点，在另一个适宜基质也稀缺的地点安装了板，正如预测的那样，两个地点的沉降都较高。在墨西哥梅迪奥卡米诺的另一项研究中，在海岸线部分被沙子淹没后，沿着岩石海岸的定居点变得更加可预测，进一步支持了这一假设。 Chthamalus spp. 未变态定居者相对于总定居者的比例似乎在月球周期的特定日期达到峰值，并且在 5 个地点具有空间相关性。峰值的周期性接近 14.75 d spnng-to-neap 周期，表明这些峰值可能与周期性短浸时间有关，不允许附着的藻类变态。最近变态 (5 l d) Chthamalus spp 的死亡率。物理伤害引起的口角在空间上是可变的。
Barnacle settlement was monitored at 5 sites separated by 50 to 250 m a t Dike Rock, La Jolla, California, USA. Chthamalus spp. and Pollicipes polymerus settlement were spatially correlated at those sites. Within sites, settlement of the 2 species were correlated These results support the hypothesis of common onshore larval transport events for all sites and both species. Other spatiotemporal patterns were contrasting: 1 peak accounted for most of P polymerus settlement, while there were 5 peaks of similar magnitude for Chthamalus spp. At 2 sites, settlement plates were installed at 2 heights in the intertidal; Chthamalus spp. settlement was similar at the 2 heights, while P polyn~erus settlement was relatively different at the sites. Such spatial patterns may have resulted from a stronger behavioral component affecting settlement in P polymerus. These results suggest that, at scales of 100 m, temporal variability in settlement rate may be related to larval pool and physical transport processes, while spatial vanabllity may be associated with behavioral response and substrate availability. Chthamalus spp. settlement was hlgher at sites where rocks were surrounded by unsuitable sandy substrate, possibly because settlement on available substrate is intensified where total suitable settlement area is relatively scarce To test this, plates were installed at another site where suitable substrate was also scarce, as predicted, settlement was higher at both sites. At another study slte in Medio Camino, Mexico, settlement became more predictable anlong sites along the rocky shore after the shoreline had been partially inundated by sand, further supporting this hypothesis. The proportion of unmetamorphosed settlers of Chthamalus spp., relative to total settlement, appeared to peak on particular days of the lunar cycle and was spatially correlated at the 5 sites. The periodicity of the peaks was close to the 14.75 d spnng-to-neap cycle, suggesting that these peaks may be related to periodic shortimmersion hmes that did not allow the attached cypnds to metamorphose. Mortality of recently metamorphosed (5 l d ) Chthamalus spp. spat by physical damage was spatially vanable.