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Long-term impacts of dam construction on plant succession and survival of an endangered species.

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Title: Long-term impacts of dam construction on plant succession and survival of an endangered species.
Authors: Lucas, S. D.1, Wheeler, J. A.2, Atallah, Y. C.1, Walker, S. E.1, Jones, C. E.1, Burk, J. H.1
Source: Ecosphere. May2016, Vol. 7 Issue 5, pn/a-n/a. 22p.
Subject Terms: *Ecological succession, *Vegetation dynamics, *Plant invasions, *Riparian areas, *Habitats, Dam design & construction, Plant succession
Geographic Terms: California
Abstract: This study was conducted to determine what changes have occurred in an arid alluvial riparian shrub habitat in the upper Santa Ana River basin over a 20+-yr period beginning prior to the completion of the Seven Oaks Dam in San Bernardino County, California and continuing until 8 yr after the completion of the dam in 2000 to assess the implications any changes may have on the persistence of the short-lived Santa Ana River Woolly Star ( Eriastrum densifolium ssp. sanctorum, Polemoniaceae). Small-scale habitat changes were determined by comparing non-native annual plant data from 1989 to 2008. Large-scale habitat changes were determined by comparing perennial plant data from 1987 to 2008. The results of this study suggest that annual species, lichen crust, and dead shrubs are increasing, and that bare ground and live shrubs are decreasing. The older sites are also increasing in annual grass cover. Successional changes have occurred since the last significant flood event in 1969 although these changes are gradual and on a continuum, precluding a sharp distinction between different age stages. The data support previously predicted rates of succession indicating ultimate maturity within at least 100 yr. The continuation of these habitat changes will likely contribute to the decline of the Woolly Star population, particularly during future drought periods. [ABSTRACT FROM AUTHOR]
Copyright of Ecosphere is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: GreenFILE
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DbLabel: GreenFILE
An: 115929517
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Long-term impacts of dam construction on plant succession and survival of an endangered species.
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  Data: <searchLink fieldCode="JN" term="%22Ecosphere%22">Ecosphere</searchLink>. May2016, Vol. 7 Issue 5, pn/a-n/a. 22p.
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  Data: This study was conducted to determine what changes have occurred in an arid alluvial riparian shrub habitat in the upper Santa Ana River basin over a 20+-yr period beginning prior to the completion of the Seven Oaks Dam in San Bernardino County, California and continuing until 8 yr after the completion of the dam in 2000 to assess the implications any changes may have on the persistence of the short-lived Santa Ana River Woolly Star ( Eriastrum densifolium ssp. sanctorum, Polemoniaceae). Small-scale habitat changes were determined by comparing non-native annual plant data from 1989 to 2008. Large-scale habitat changes were determined by comparing perennial plant data from 1987 to 2008. The results of this study suggest that annual species, lichen crust, and dead shrubs are increasing, and that bare ground and live shrubs are decreasing. The older sites are also increasing in annual grass cover. Successional changes have occurred since the last significant flood event in 1969 although these changes are gradual and on a continuum, precluding a sharp distinction between different age stages. The data support previously predicted rates of succession indicating ultimate maturity within at least 100 yr. The continuation of these habitat changes will likely contribute to the decline of the Woolly Star population, particularly during future drought periods. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Ecosphere is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/ecs2.1235
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 22
        StartPage: n/a
    Subjects:
      – SubjectFull: Ecological succession
        Type: general
      – SubjectFull: Vegetation dynamics
        Type: general
      – SubjectFull: Plant invasions
        Type: general
      – SubjectFull: Riparian areas
        Type: general
      – SubjectFull: Habitats
        Type: general
      – SubjectFull: Dam design & construction
        Type: general
      – SubjectFull: Plant succession
        Type: general
      – SubjectFull: California
        Type: general
    Titles:
      – TitleFull: Long-term impacts of dam construction on plant succession and survival of an endangered species.
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            NameFull: Wheeler, J. A.
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            NameFull: Atallah, Y. C.
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            NameFull: Walker, S. E.
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              Text: May2016
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              Y: 2016
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              Value: 7
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