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Grazing by captive Barnacle geese affects graminoid growth and productivity on Svalbard
https://nipr.repo.nii.ac.jp/records/2505
https://nipr.repo.nii.ac.jp/records/25057b047b66-8c5b-45c9-8a98-dd06be7c5096
名前 / ファイル | ライセンス | アクション |
---|---|---|
KJ00004160777 (1.5 MB)
|
Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2006-03-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Grazing by captive Barnacle geese affects graminoid growth and productivity on Svalbard | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | goose herbivory, climatic warming, compensation, High Arctic, tundra grasses | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
論文名よみ | ||||||
その他のタイトル | Grazing by captive Barnacle geese affects graminoid growth and productivity on Svalbard | |||||
著者名(英) |
Cooper,Elisabeth J.
× Cooper,Elisabeth J.× Jonsdottir,Ingibjorg S.× Pahud,Astrid |
|||||
著者所属(英) | ||||||
en | ||||||
The University Centre in Svalbard (UNIS)/The University Centre in Svalbard (UNIS)/The University Centre in Svalbard (UNIS) | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Migratory geese breed in Svalbard in summer and return to Western Europe for the winter, feeding on wetlands and agricultural fields. Recent changes in climate, land use and the implementation of protective measures dramatically improved the birds' ability to survive the winter, increasing population sizes and thus the potential grazing impact on Svalbard. This study measured live leaf length and aboveground productivity of Alopecurus borealis and Dupontia fisheri, widespread forage grasses on Svalbard, in order to make a quantitative assessment of the short term effects of different intensities of goose grazing. In addition we wanted to establish whether warming could enhance graminoid growth and regenerative capacity of grazed grasses. We carried out a factorial experiment of grazing (control, normal and high grazing pressure) using captive wild barnacle geese and temperature manipulation using open top chambers (OTCs) in a mesic and wet habitat in Adventdalen, Svalbard (78°N , 16°E ), following the growth of individual tillers before grazing and up until 20 days after grazing. OTCs enhanced temperatures and growth rates for Alopecurus in the mesic habitat, but slightly decreased belowground temperatures and early season growth for Dupontia in the wet habitat. Grazing stimulated growth rates resulting in increased cumulative leaf length production. The strength of response was greater for Alopecurus than Dupontia. We suggest that nutrients released by goose faeces were taken up by Alopecurus thus enhancing their growth rates, but that the thick layer of mosses prevented the addition of faeces from benefitting Dupontia as much. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 59, p. 1-15, 発行日 2006-03 |