globalchange  > 过去全球变化的重建
DOI: 10.1371/journal.pone.0123995
论文题名:
Primary Succession on a Hawaiian Dryland Chronosequence
作者: Kealohanuiopuna M. Kinney; Gregory P. Asner; Susan Cordell; Oliver A. Chadwick; Katherine Heckman; Sara Hotchkiss; Marjeta Jeraj; Ty Kennedy-Bowdoin; David E. Knapp; Erin J. Questad; Jarrod M. Thaxton; Frank Trusdell; James R. Kellner
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2015
发表日期: 2015-6-12
卷: 10, 期:6
语种: 英语
英文关键词: Ecological succession ; Ecosystems ; Paleopedology ; Paleoecology ; Radioactive carbon dating ; Lidar ; Grasses ; Forests
英文摘要: We used measurements from airborne imaging spectroscopy and LiDAR to quantify the biophysical structure and composition of vegetation on a dryland substrate age gradient in Hawaii. Both vertical stature and species composition changed during primary succession, and reveal a progressive increase in vertical stature on younger substrates followed by a collapse on Pleistocene-aged flows. Tall-stature Metrosideros polymorpha woodlands dominated on the youngest substrates (hundreds of years), and were replaced by the tall-stature endemic tree species Myoporum sandwicense and Sophora chrysophylla on intermediate-aged flows (thousands of years). The oldest substrates (tens of thousands of years) were dominated by the short-stature native shrub Dodonaea viscosa and endemic grass Eragrostis atropioides. We excavated 18 macroscopic charcoal fragments from Pleistocene-aged substrates. Mean radiocarbon age was 2,002 years and ranged from < 200 to 7,730. Genus identities from four fragments indicate that Osteomeles spp. or M. polymorpha once occupied the Pleistocene-aged substrates, but neither of these species is found there today. These findings indicate the existence of fires before humans are known to have occupied the Hawaiian archipelago, and demonstrate that a collapse in vertical stature is prevalent on the oldest substrates. This work contributes to our understanding of prehistoric fires in shaping the trajectory of primary succession in Hawaiian drylands.
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0123995&type=printable
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/21929
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: Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island, United States of America;Institute of Pacific Islands Forestry, United States Department of Agriculture Forest Service, Hilo, Hawaii, United States of America;Department of Global Ecology, Carnegie Institution for Science, Stanford, California, United States of America;Institute of Pacific Islands Forestry, United States Department of Agriculture Forest Service, Hilo, Hawaii, United States of America;Department of Geography, University of California Santa Barbara, Santa Barbara, California, United States of America;United States Department of Agriculture, Forest Service, Northern Research Station, Center for Accelerator Mass Spectrometry–Lawrence Livermore National Laboratory, Livermore, California, United States of America;Department of Botany, University of Wisconsin, Madison, Wisconsin, United States of America;Department of Botany, University of Wisconsin, Madison, Wisconsin, United States of America;Department of Global Ecology, Carnegie Institution for Science, Stanford, California, United States of America;Department of Global Ecology, Carnegie Institution for Science, Stanford, California, United States of America;Department of Biological Sciences, California Polytechnic University, Pomona, California, United States of America;Department of Biological Sciences, Eastern Kentucky University, Richmond, Kentucky, United States of America;United States Geological Survey, Hawaii Volcano Observatory, Volcano, Hawaii, United States of America;Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island, United States of America

Recommended Citation:
Kealohanuiopuna M. Kinney,Gregory P. Asner,Susan Cordell,et al. Primary Succession on a Hawaiian Dryland Chronosequence[J]. PLOS ONE,2015-01-01,10(6)
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