کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6459115 | 1421353 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Deer browsing outweighs the effects of site preparation and mechanical release on balsam fir seedlings performance: Implications to forest management
ترجمه فارسی عنوان
مرور گوزن ها اثرات آماده سازی سایت و انتشار مکانیکی بر عملکرد نهال نخبگان را تحت تاثیر قرار می دهد: پیامدهای مدیریت جنگل
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کلمات کلیدی
شاهزاده بلسان، محرومیت گوزن، جنگلداری، گوزن سفید مرور
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
High abundance of large herbivore has major impacts on the composition, structure, and functioning of forest ecosystems, which can result in regeneration failures. Reduction of large herbivore density, however, does not warrant the successful establishment of tree species sensitive to browsing. In such contexts, planting in combination with silvicultural treatments can be used to restore forest cover over large areas. Using an experimental plantation on Anticosti Island (Quebec, Canada), we investigated how white-tailed deer (Odocoileus virginianus) browsing affects the performance of planted balsam fir (Abies balsamea L. Mill.) seedlings following site preparation and mechanical release. After seven growing seasons, seedling height, leader length and ground-level diameter were 30% bigger in fenced plots compared to unfenced ones as a result of cumulative browsing. Seedling survival was low (62%) and unaffected by either silvicultural treatments or deer after the onset of the mechanical release treatment. Site preparation and mechanical release did not improve morphological parameters and did not increase browsing occurrence on fir, likely because they had little influence on surrounding plants that compete for resources and may hide seedlings from deer 7Â years after planting. Selective browsing on neighbouring plants also acted as a release treatment for balsam fir seedlings, allowing them to reach full sunlight at a lower height (125-146Â cm), compared to fir seedlings in deer exclosures (161-184Â cm). We propose that managers aim at target deer densities that promote browsing positive effects. In such context, prescription for site preparation and mechanical release should be based on other considerations than promoting seedling growth, such as facilitating practical reforestation work.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forest Ecology and Management - Volume 405, 1 December 2017, Pages 360-366
Journal: Forest Ecology and Management - Volume 405, 1 December 2017, Pages 360-366
نویسندگان
Maxime Brousseau, Nelson Thiffault, Julien Beguin, Vincent Roy, Jean-Pierre Tremblay,