کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4404592 | 1307172 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Short- and Long-Term Influence of Brush Canopy Cover on Northern Bobwhite Demography in Southern Texas
ترجمه فارسی عنوان
تأثیر کوتاه مدت و بلند مدت پوشش سرسبد قلمه بر ضایعات سنگی شمالی در جنوب تگزاس
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم کشاورزی و بیولوژیک (عمومی)
چکیده انگلیسی
Extensive research has been devoted to quantifying the habitat needs and selection of many wildlife species. However, how habitat selection affects the long-term demographic performance of a species largely has been ignored. We used northern bobwhite (Colinus virginianus) and brush canopy coverage-an important habitat component for quail-to evaluate the influence of habitat on short- and long-term demographic performance of this species. We used data from a 5-yr (2001-2005) radiotelemetry study of northern bobwhite in southern Texas to obtain estimates of bobwhite density, survival, and production on three study areas with 5%, 11%, and 32% brush canopy cover. Our objectives were to compare these demographic variables individually among brush canopy cover classes and then simulate their cumulative effect on demographic performance using a simulation model. All demographic parameters were similar among the three brush canopy cover classes. However, simulation modeling indicated that long-term demographic performance was greater on the 11% and 32% brush canopy cover classes. Simulated bobwhite populations were 2-3 times higher in these two cover classes than the 5% brush canopy cover class. In addition, the probability of population persistence was greater in the 11% (0.91) and 32% (1.00) brush canopy cover classes than the 5% cover class (0.54) using a quasi-extinction criterion of â¤â40 birds (â¤â0.05 birdsâ·âha-1). Our study highlights the shortcoming of considering only short-term effects when comparing habitat given that short- and long-term effects of habitat on demographic performance can differ.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Rangeland Ecology & Management - Volume 67, Issue 1, January 2014, Pages 99-106
Journal: Rangeland Ecology & Management - Volume 67, Issue 1, January 2014, Pages 99-106
نویسندگان
Stephen J. DeMaso, Fidel Hernández, Leonard A. Brennan, Nova J. Silvy, William E. Grant, X. Ben Wu, Fred C. Bryant,