Large-scale spatial distribution patterns of echinoderms in nearshore rocky habitats.
Large-scale spatial distribution patterns of echinoderms in nearshore rocky habitats.
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DOI：
10.1371/journal.pone.0013845
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发表时间：
2010-11-05
期刊：
影响因子：
3.7
通讯作者：
Silva A
中科院分区：
文献类型：
--
作者：
Iken K;Konar B;Benedetti-Cecchi L;Cruz-Motta JJ;Knowlton A;Pohle G;Mead A;Miloslavich P;Wong M;Trott T;Mieszkowska N;Riosmena-Rodriguez R;Airoldi L;Kimani E;Shirayama Y;Fraschetti S;Ortiz-Touzet M;Silva A
本研究探讨棘皮动物组合从近岸岩石栖息地的大规模分布模式，特别强调确定纬度的趋势和大的区域热点。根据海洋生物普查NaGISA项目（www.nagisa.coml.org）的标准化采样协议，从12个生态区内的76个全球分布的地点对棘皮动物进行采样。基于样本的物种丰富度总体较低（每个站点<1-5个物种），共有32个小行星，18个海胆，21个蛇类和15个海参类物种。用目视法取样的潮间带组合（1 m2样方中>2 cm的生物）中的丰度和物种丰富度在加勒比海生态区最高，海胆在这些组合中占主导地位，平均为5 ind m−2。相比之下，从0.0625平方米样方的空地收集的潮间带棘皮动物组合在东北太平洋生态区的丰度和丰富度最高，其中小行星和海参占主导地位，平均为14 ind 0.0625 m−2。潮间带组合的丰度和丰富度存在明显的纬度趋势，从北方高纬度的峰值下降。没有纬度的趋势，发现潮下棘皮动物组合与任何采样技术。垂直梯度似乎被区域多样性热点所取代。在这些热点棘皮动物组合可能是由当地和区域的过程，如整体生产力和进化历史。我们还测试了一组14个环境变量（6个自然和8个人为）作为潜在的驱动程序的棘皮动物组合的生态区。自然变量的盐度，海面温度，叶绿素a，初级生产力与棘皮动物组合强烈相关;无机污染和营养污染的人为变量也有助于相关性。我们的研究结果表明，近岸棘皮动物组合似乎是由一个网络的环境和生态过程，并通过不同的反应，不同的棘皮动物类群，近岸岩石栖息地棘皮动物组合的模式难以概括。
This study examined echinoderm assemblages from nearshore rocky habitats for large-scale distribution patterns with specific emphasis on identifying latitudinal trends and large regional hotspots. Echinoderms were sampled from 76 globally-distributed sites within 12 ecoregions, following the standardized sampling protocol of the Census of Marine Life NaGISA project (www.nagisa.coml.org). Sample-based species richness was overall low (<1–5 species per site), with a total of 32 asteroid, 18 echinoid, 21 ophiuroid, and 15 holothuroid species. Abundance and species richness in intertidal assemblages sampled with visual methods (organisms >2 cm in 1 m2 quadrats) was highest in the Caribbean ecoregions and echinoids dominated these assemblages with an average of 5 ind m−2. In contrast, intertidal echinoderm assemblages collected from clearings of 0.0625 m2 quadrats had the highest abundance and richness in the Northeast Pacific ecoregions where asteroids and holothurians dominated with an average of 14 ind 0.0625 m−2. Distinct latitudinal trends existed for abundance and richness in intertidal assemblages with declines from peaks at high northern latitudes. No latitudinal trends were found for subtidal echinoderm assemblages with either sampling technique. Latitudinal gradients appear to be superseded by regional diversity hotspots. In these hotspots echinoderm assemblages may be driven by local and regional processes, such as overall productivity and evolutionary history. We also tested a set of 14 environmental variables (six natural and eight anthropogenic) as potential drivers of echinoderm assemblages by ecoregions. The natural variables of salinity, sea-surface temperature, chlorophyll a, and primary productivity were strongly correlated with echinoderm assemblages; the anthropogenic variables of inorganic pollution and nutrient contamination also contributed to correlations. Our results indicate that nearshore echinoderm assemblages appear to be shaped by a network of environmental and ecological processes, and by the differing responses of various echinoderm taxa, making generalizations about the patterns of nearshore rocky habitat echinoderm assemblages difficult.
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影响因子：
3.7
作者：
Benedetti-Cecchi L;Iken K;Konar B;Cruz-Motta J;Knowlton A;Pohle G;Castelli A;Tamburello L;Mead A;Trott T;Miloslavich P;Wong M;Shirayama Y;Lardicci C;Palomo G;Maggi E
通讯作者：
Maggi E
DOI：
10.1668/0003-1569(2001)041
发表时间：
2001-04-01
期刊：
AMERICAN ZOOLOGIST
影响因子：
--
作者：
Kramer, DL;McLaughlin, RL
通讯作者：
McLaughlin, RL
DOI：
10.1016/j.dsr2.2003.06.003
发表时间：
2004-01-01
影响因子：
3
作者：
Brickley, PJ;Thomas, AC
通讯作者：
Thomas, AC
影响因子：
1.6
作者：
Clarke, A;Aronson, RB;Blake, DB
通讯作者：
Blake, DB
DOI：
10.1073/pnas.0603587103
发表时间：
2006-06-13
影响因子：
11.1
作者：
Allen, Andrew P.;Gillooly, James F.;Brown, James H.
通讯作者：
Brown, James H.