Academic Journal
Dynamics of alpine treelines: positive feedbacks and global, regional and local controls
| العنوان: | Dynamics of alpine treelines: positive feedbacks and global, regional and local controls |
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| المؤلفون: | Jong-Wook Kim, Jeom-Sook Lee |
| المصدر: | Journal of Ecology and Environment, Vol 38, Iss 1, Pp 1-14 (2015) |
| بيانات النشر: | The Ecological Society of Korea, 2015. |
| سنة النشر: | 2015 |
| المجموعة: | LCC:Science |
| مصطلحات موضوعية: | alpine treeline, alternative stable state theory, global factor, positive feedbacks, regional and local factor, regional, local factor, Science |
| الوصف: | Whilst it is clear that increasing temperatures from global environmental change will impact the positions of alpine treelines, it is likely that a range of regional and local scaled factors will mediate the overall impact of global scale climate drivers. We summarized 12 categories of abiotic and biotic factors as 4 groups determining treeline positions. First, there are global factors related to climate-induced growth limitation and carbon limitation. Second, there are seven regional and local factors related to treeline dynamics including frost stress, topography, water stress, snow, wind, fire and nonfire disturbance. Third, species-specific factors can control treeline dynamics through their influence on reproduction and life history traits. Fourth, there are positive feedbacks in structuring the dynamics of treelines. Globally, the commonly accepted growth limitation hypothesis is that growth at a treeline is limited by temperature. Meanwhile, positive feedbacks between canopy cover and tree establishment are likely to control the spatial pattern and temporal dynamics of many treelines. The presence of non-linear dynamics at treelines has implications for the use of treelines as barometers of climate change because the lagged responses and abrupt shifts inherent in non-equilibrium systems may combine to mask the overall climate trend. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2287-8327 2288-1220 |
| Relation: | https://doaj.org/toc/2287-8327; https://doaj.org/toc/2288-1220 |
| DOI: | 10.5141/ecoenv.2015.001 |
| URL الوصول: | https://doaj.org/article/0e3ebf3874a743e1a656d2cfa3309724 |
| رقم الانضمام: | edsdoj.0e3ebf3874a743e1a656d2cfa3309724 |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 22878327 22881220 |
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| DOI: | 10.5141/ecoenv.2015.001 |