نتایج جستجو برای: subalpine ecosystems
تعداد نتایج: 47057 فیلتر نتایج به سال:
Human activities have transformed a significant proportion of the world's land surface, with profound effects on ecosystem processes. Soil applications of macronutrients such as nitrate, phosphorus, potassium or calcium are routinely used in the management of croplands, grasslands and forests to improve plant health or increase productivity. However, while the effects of continuous fertilizatio...
Subalpine grasslands support biodiversity, agriculture, and tourism but their resilience to extreme climatic events is challenged accelerating vulnerability tipping points. Microbial communities, central in ecosystem functioning, are usually considered more resistant highly resilient albeit functional redundancy strong selection by local harsh conditions. This study explored the soil microbial ...
Alpine and subalpine moorland ecosystems contain unique plant communities, often with many endemic threatened species, some of which depend on insect pollination. Although alpine are vulnerable to climatic change, few studies have investigated flower-visiting insects in such examined the factors regulating plant-pollinator interactions along altitudinal gradients. Here, we explored how patterns...
The plant species in the mountainous regions might be relatively more vulnerable to climate change. Understanding potential effects of change on keystone species, such as Rhododendron subalpine and alpine ecosystems, is critically important for montane ecosystems management conservation. In this study, we used maximum entropy (MaxEnt) model, 53 distribution records, 22 environmental variables p...
Abstract The synergic influence of land use and climate change on future forest dynamics is hard to disentangle, especially in human-dominated ecosystems. Forest gain mountain ecosystems often creates different spatial–temporal patterns between upper lower elevation belts. We analyzed cover over the past 50 years predicted Business as Usual changes an inner subalpine watershed by using maps, de...
Old growth is disappearing globally, with implications for biodiversity, forest resilience, and carbon storage; yet uncertainty remains about how much exists, partly because assessments stratify ecosystems differently, sometimes obscuring relevant patterns. This paper compares portrayals of British Columbia’s (BC) old-growth stratified in two ways: by biogeoclimatic variant, as per policy, rela...
The exploration of mechanisms that enable species coexistence under competition for a sole limiting resource is widespread across ecology. Two examples such facilitative processes are intraspecific and spatial self-organisation. These determine the outcome competitive dynamics in many resource-limited patterned ecosystems, classical which include dryland vegetation patterns, intertidal mussel b...
The balsam woolly adelgid (Adelges piceae (Ratzeburg) (Homoptera: Adelgidae)) (BWA) is a nonnative, invasive insect that threatens Abies species throughout North America. It is well established in the Pacific Northwest, but continues to move eastward through Idaho and into Montana and potentially threatens subalpine fir to the south in the central and southern Rocky Mountains. We developed a cl...
While the upward shift of plant species has been observed on many alpine and nival summits, the reaction of the subalpine and lower alpine plant communities to the current warming and lower snow precipitation has been little investigated so far. To this aim, 63 old, exhaustive plant inventories, distributed along a subalpine-alpine elevation gradient of the Swiss Alps and covering different pla...
What would it be like to walk into a real-life “Holodeck” or “Cerebro” and experience a stunning new world unlike anything seen before? Beyond this, what if we were able to experience hitherto unobservable aspects of nature, as environments into which the body cannot actually venture? In fact, these questions are on the minds of scientists and artists working together, right now, in the AlloSph...
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