Projections of water, carbon, and nitrogen dynamics under future climate change in an alpine tundra ecosystem in the southern Rocky Mountains using a biogeochemical model

2019 ◽  
Vol 650 ◽  
pp. 1451-1464 ◽  
Author(s):  
Zheng Dong ◽  
Charles T. Driscoll ◽  
John L. Campbell ◽  
Afshin Pourmokhtarian ◽  
Anne M.K. Stoner ◽  
...  
Keyword(s):  
Climate Change ◽  
Rocky Mountains ◽  
Future Climate ◽  
Alpine Tundra ◽  
Future Climate Change ◽  
Biogeochemical Model ◽  
Carbon And Nitrogen ◽  
Southern Rocky Mountains ◽  
Tundra Ecosystem ◽  
Carbon And Nitrogen Dynamics

scholarly journals Carbohydrates and Secondary Compounds of Alpine Tundra Shrubs in Relation to Experimental Warming

2021 ◽  
Author(s):  
Yumei Zhou ◽  
Ming Yang ◽  
Zhijuan Tai ◽  
Jingjing Jia ◽  
Dongtao Luan ◽  
...  
Keyword(s):  
Seasonal Pattern ◽  
Soluble Sugars ◽  
Secondary Compounds ◽  
Future Climate ◽  
Total Carbon ◽  
Alpine Tundra ◽  
Vegetation Coverage ◽  
Future Climate Change ◽  
Total Phenols ◽  
Tundra Ecosystem

Abstract Background: It is critical to understand the sensitivity, response direction and magnitude of carbohydrates and secondary compounds to warming for predicting the structure and function of the tundra ecosystem towards future climate change. Results: Open-top chambers (OTCs) were used to passively increase air and soil temperatures on Changbai Mountain alpine tundra. After seven years’ continuous warming, the vegetation coverage, nonstructural carbohydrates (soluble sugars and starch) and secondary compounds (total phenols, flavonoids and triterpenes) of leaves and roots in three dominant dwarf shrubs, Dryas octopetala var. asiatica, Rhododendron confertissimum and Vaccinium uliginosum, were investigated during the growing season. Warming did not significantly affect the concentrations of carbohydrates but decreased total phenols for the three species. Carbohydrates and secondary compounds showed significantly seasonal pattern and species-specific variation. No significant trade-off between carbohydrates and secondary compounds was observed. Warming significantly increased the coverage of Dr. octopetala var. asiatica, did not change it for V. uliginosum and decreased it for Rh. confertissimum. Rh. confertissimum had significantly lower carbohydrates and higher secondary compounds investment than the other two species. Enhanced dominance and competitiveness of Dr. octopetala var. asiatica was companied by increased trend in carbohydrate concentrations and decreased ratio of secondary compounds to total carbon in the warming OTCs. Conclusions: We, therefore, predict that Dr. octopetala var. asiatica will continue to maintain dominant status, but the competition ability of V. uliginosum could gradually decrease with warming, leading to changes in species composition and community structure of the Changbai tundra ecosystem under future climate warming.

Responses of Irish Vegetation to Future Climate Change

2006 ◽  
Vol 106 (3) ◽  
pp. 323-334 ◽  
Author(s):  
Michael B. Jones ◽  
Alison Donnelly ◽  
Fabrizio Albanito
Keyword(s):  
Climate Change ◽  
Future Climate ◽  
Future Climate Change

Future climate change and its impacts over small island states

2002 ◽  
Vol 19 ◽  
pp. 179-192 ◽  
Author(s):  
M Lal ◽  
H Harasawa ◽  
K Takahashi
Keyword(s):  
Climate Change ◽  
Future Climate ◽  
Future Climate Change ◽  
Small Island ◽  
Island States ◽  
Small Island States

Supplemental Material to the A&WMA 2008 Critical Review "Prospects for Future Climate Change and the Reasons for Early Action"

2008 ◽  
Vol 58 (6) ◽  
Author(s):  
Sylvia Edgerton ◽  
Michael MacCracken ◽  
Meng-Dawn Cheng ◽  
Edwin Corporan ◽  
Matthew DeWitt ◽  
...  
Keyword(s):  
Climate Change ◽  
Critical Review ◽  
Future Climate ◽  
Future Climate Change ◽  
Early Action
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