globalchange  > 过去全球变化的重建
DOI: 10.1371/journal.pone.0140162
论文题名:
Global Habitat Suitability and Ecological Niche Separation in the Phylum Placozoa
作者: Omid Paknia; Bernd Schierwater
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2015
发表日期: 2015-11-18
卷: 10, 期:11
语种: 英语
英文关键词: Ecological niches ; Salinity ; Habitats ; Nitrates ; Biogeography ; Chlorophyll ; Mass diffusivity ; Surface temperature
英文摘要: The enigmatic placozoans, which hold a key position in the metazoan Tree of Life, have attracted substantial attention in many areas of biological and biomedical research. While placozoans have become an emerging model system, their ecology and particularly biogeography remain widely unknown. In this study, we use modelling approaches to explore habitat preferences, and distribution pattern of the placozoans phylum. We provide hypotheses for discrete ecological niche separation between genetic placozoan lineages, which may also help to understand biogeography patterns in other small marine invertebrates. We, here, used maximum entropy modelling to predict placozoan distribution using 20 environmental grids of 9.2 km2 resolution. In addition, we used recently developed metrics of niche overlap to compare habitat suitability models of three genetic clades. The predicted distributions range from 55°N to 44°S and are restricted to regions of intermediate to warm sea surface temperatures. High concentrations of salinity and low nutrient concentrations appear as secondary factors. Tests of niche equivalency reveal the largest differences between placozoan clades I and III. Interestingly, the genetically well-separated clades I and V appear to be ecologically very similar. Our habitat suitability models predict a wider latitudinal distribution for placozoans, than currently described, especially in the northern hemisphere. With respect to biogeography modelling, placozoans show patterns somewhere between higher metazoan taxa and marine microorganisms, with the first group usually showing complex biogeographies and the second usually showing “no biogeography.”
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0140162&type=printable
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/21475
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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作者单位: ITZ, Ecology and Evolution, TiHo Hannover, Hannover, Germany;ITZ, Ecology and Evolution, TiHo Hannover, Hannover, Germany;Department of Ecology and Evolutionary Biology, Yale University, New Haven, Connecticut, United States of America;Sackler Institute for Comparative Genomics and Division of Invertebrate Zoology, American Museum of Natural History, New York, New York, United States of America

Recommended Citation:
Omid Paknia,Bernd Schierwater. Global Habitat Suitability and Ecological Niche Separation in the Phylum Placozoa[J]. PLOS ONE,2015-01-01,10(11)
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