Cold hardiness of Lymantria monacha and L. dispar (Lepidoptera: Erebidae) eggs to extreme winter temperatures: implications for predicting climate change impacts

2018 ◽  
Vol 43 (4) ◽  
pp. 422-430 ◽  
Author(s):  
Julia J. J. Fält-Nardmann ◽  
Kai Ruohomäki ◽  
Olli-Pekka Tikkanen ◽  
Seppo Neuvonen
Keyword(s):  
Climate Change ◽  
Cold Hardiness ◽  
Climate Change Impacts ◽  
Lymantria Monacha ◽  
Winter Temperatures

scholarly journals Climate change impacts on snow and streamflow drought regimes in four ecoregions of British Columbia

2020 ◽  
Author(s):  
Jennifer R. Dierauer ◽  
Diana M. Allen ◽  
Paul H. Whitfield
Keyword(s):  
Climate Change ◽  
British Columbia ◽  
Climate Change Impacts ◽  
Winter Precipitation ◽  
Human Needs ◽  
Regime Changes ◽  
Precipitation Decrease ◽  
Winter Temperatures ◽  
The Future ◽  
The Relationship

Abstract. In many regions with seasonal snow cover, summer streamflow is primarily sustained by groundwater that is recharged during the snowmelt period. Therefore, below-normal snowpack (snow drought) may lead to below-normal summer streamflow (streamflow drought). Summer streamflow is important for supplying human needs and sustaining ecosystems. Climate change impacts on snow have been widely studied, but the relationship between snow drought and streamflow drought is not well understood. In this study, a combined investigation of climate change impacts on snow drought and streamflow drought was completed using generic groundwater – surface water models for four headwater catchments in different ecoregions of British Columbia. Results show that, in response to increased precipitation and temperature, the snow drought regime changes substantially for all four catchments. Warm snow droughts, which are caused by above-normal winter temperatures, increase in frequency, and dry snow droughts, which are caused by below-normal winter precipitation, decrease in frequency. The shift toward more frequent and severe temperature-related snow droughts leads to decreased summer runoff, decreased summer groundwater storage, and more extreme low flows in summer. Moreover, snow droughts propagate into summer streamflow droughts more frequently in the future time periods (2050s, 2080s) as compared to the baseline 1980s period. Thus, warm snow droughts not only become more frequent and severe in the future but also more likely to result in summer streamflow drought conditions.

Climate change impacts on crop yields in Ethiopia

2019 ◽  
Author(s):  
International Food Policy Research Institute (IFPRI)
Keyword(s):  
Climate Change ◽  
Crop Yields ◽  
Climate Change Impacts
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