skip to main content
訪客
個人書架
我的帳戶
登出
登入
This feature requires javascript
檢索首頁
圖書館首頁
電子期刊
引用參考文獻查詢
指定參考書查詢
新書通報
標籤查詢
線上輔助
語言:
English
繁體中文
This feature required javascript
This feature requires javascript
Primo Search
館藏+文章
館藏+文章
館藏
查館藏
文章
查文章
機構典藏
機構典藏
Search For:
Clear Search Box
Search in:
文章
Or hit Enter to replace search target
Or select another collection:
Search in:
文章
進階檢索
瀏覽查詢
This feature requires javascript
顯示結果:
查詢種類
criteria input
包含在我的檢索語句內
完全相同
顯示結果:
查詢種類 索引
criteria input
任何地方
題名
ISBN
ISSN
Show Results with:
題名
Show Results with:
任何地方
題名
ISBN
ISSN
This feature requires javascript
Determination of foraging thresholds and effects of application on energetic carrying capacity for waterfowl
Hagy, Heath M ; Kaminski, Richard M Margalida, Antoni
PloS one, 2015-03, Vol.10 (3), p.e0118349-e0118349
[同儕審閱期刊]
可取得全文
引用
被引用
線上檢視
詳細格式
評論和標籤
相關文章推薦
FullText@NUTN
引用次數
This feature requires javascript
傳送到
加入個人書架
從個人書架中移除
E-mail
列印
永久連結
引用
EndNote
導出 RiS
This feature requires javascript
題名:
Determination of foraging thresholds and effects of application on energetic carrying capacity for waterfowl
著者:
Hagy, Heath M
;
Kaminski, Richard M
Margalida, Antoni
主題:
Animal behavior
;
Animals
;
Anseriformes
;
Aquatic birds
;
Birds
;
Carrying capacity
;
Carrying capacity (Ecology)
;
Conservation
;
Conservation of Natural Resources
;
Density
;
Ecology
;
Ecosystem
;
Environmental protection
;
Food
;
Foraging behavior
;
Foraging habitats
;
Habitat conservation
;
Habitats
;
Mathematical models
;
Metabolism
;
Migratory birds
;
Models, Biological
;
Nutrition research
;
Parameter estimation
;
Population ecology
;
Predation
;
Prey
;
Protection and preservation
;
Seasons
;
Seeds
;
Thresholds
;
Tubers
;
Waterfowl
;
Wetlands
;
Wildfowl
;
Wildlife
;
Wildlife habitats
;
Winter
所屬期刊:
PloS one, 2015-03, Vol.10 (3), p.e0118349-e0118349
描述:
Energetic carrying capacity of habitats for wildlife is a fundamental concept used to better understand population ecology and prioritize conservation efforts. However, carrying capacity can be difficult to estimate accurately and simplified models often depend on many assumptions and few estimated parameters. We demonstrate the complex nature of parameterizing energetic carrying capacity models and use an experimental approach to describe a necessary parameter, a foraging threshold (i.e., density of food at which animals no longer can efficiently forage and acquire energy), for a guild of migratory birds. We created foraging patches with different fixed prey densities and monitored the numerical and behavioral responses of waterfowl (Anatidae) and depletion of foods during winter. Dabbling ducks (Anatini) fed extensively in plots and all initial densities of supplemented seed were rapidly reduced to 10 kg/ha and other natural seeds and tubers combined to 170 kg/ha, despite different starting densities. However, ducks did not abandon or stop foraging in wetlands when seed reduction ceased approximately two weeks into the winter-long experiment nor did they consistently distribute according to ideal-free predictions during this period. Dabbling duck use of experimental plots was not related to initial seed density, and residual seed and tuber densities varied among plant taxa and wetlands but not plots. Herein, we reached several conclusions: 1) foraging effort and numerical responses of dabbling ducks in winter were likely influenced by factors other than total food densities (e.g., predation risk, opportunity costs, forager condition), 2) foraging thresholds may vary among foraging locations, and 3) the numerical response of dabbling ducks may be an inconsistent predictor of habitat quality relative to seed and tuber density. We describe implications on habitat conservation objectives of using different foraging thresholds in energetic carrying capacity models and suggest scientists reevaluate assumptions of these models used to guide habitat conservation.
出版者:
United States: Public Library of Science
語言:
英文
識別號:
ISSN: 1932-6203
EISSN: 1932-6203
DOI: 10.1371/journal.pone.0118349
PMID: 25790255
資源來源:
Publicly Available Content Database
Academic Search Premier
Agricultural & Environmental Science Collection
DOAJ Directory of Open Access Journals
連結
View this record in MEDLINE/PubMed
This feature requires javascript
This feature requires javascript
返回到檢索清單
This feature requires javascript
This feature requires javascript
正在檢索遠程資料庫,請稍等
查詢:
在
primo_central_multiple_fe
顯示現有記錄
This feature requires javascript
This feature requires javascript