Response of green alder (Alnus viridis subsp. fruticosa) patch dynamics and plant community composition to fire and regional temperature in north-western Canada

2010 ◽  
pp. no-no ◽  
Author(s):  
Trevor C. Lantz ◽  
Sarah E. Gergel ◽  
Greg H. R. Henry
Keyword(s):  
Community Composition ◽  
Plant Community ◽  
Patch Dynamics ◽  
Western Canada ◽  
Plant Community Composition ◽  
Green Alder ◽  
Alnus Viridis ◽  
Regional Temperature ◽  
North Western

scholarly journals Spatial Distribution of Highland Cattle in Alnus viridis Encroached Subalpine Pastures

2021 ◽  
Vol 9 ◽  
Author(s):  
Mia Svensk ◽  
Marco Pittarello ◽  
Ginevra Nota ◽  
Manuel K. Schneider ◽  
Eric Allan ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Community Composition ◽  
Plant Community ◽  
Forage Yield ◽  
Ecological Indicator ◽  
Plant Community Composition ◽  
Gps Collars ◽  
Alnus Viridis ◽  
Pastoral Value ◽  
The Impact

Green alder (Alnus viridis) is a shrub species that has expanded over former pastures in Central Europe due to land abandonment, leading to negative agri-environmental impacts, such as a reduction in forage yield and quality and an increase in nitrate leaching. Robust livestock breeds such as Highland cattle could be used to control A. viridis encroachment. The objectives of this study were to investigate the impact of A. viridis encroachment on plant community composition and diversity and to map the spatial distribution of Highland cattle in A. viridis-encroached pastures. During the summer of 2019, three different Highland cattle herds were placed along an A. viridis encroachment gradient. A total of 58 botanical surveys were carried out before grazing to assess plant community composition, pastoral value, and ecological indicator values. The spatial distribution of cattle was studied during the whole grazing period by monitoring six to eight cows equipped with GPS collars in each herd. Plant species associated with higher pastoral values of the vegetation were found in areas with lower A. viridis cover, while highly encroached areas were dominated by a few nitrophilus and shade-tolerant broad-leaved species and by ferns. Cattle spent more time in areas with higher pastoral value but did not avoid areas with high cover of A. viridis, on steep slopes or far from water. These results show that Highland cattle are able to tolerate harsh environmental conditions and that they can exploit A. viridis-encroached pastures. This suggests that they have a high potential to reduce A. viridis encroachment in the long-term.

scholarly journals Incorporation of mineral nitrogen into the soil food web as affected by plant community composition

2021 ◽  
Author(s):  
Tanja Strecker ◽  
Annette Jesch ◽  
Dörte Bachmann ◽  
Melissa Jüds ◽  
Kevin Karbstein ◽  
...  
Keyword(s):  
Food Web ◽  
Community Composition ◽  
Plant Community ◽  
Mineral Nitrogen ◽  
Plant Community Composition ◽  
Soil Food Web

scholarly journals Plant community composition and species richness in the High Arctic tundra: From the present to the future

2017 ◽  
Vol 7 (23) ◽  
pp. 10233-10242 ◽  
Author(s):  
Jacob Nabe-Nielsen ◽  
Signe Normand ◽  
Francis K. C. Hui ◽  
Laerke Stewart ◽  
Christian Bay ◽  
...  
Keyword(s):  
Species Richness ◽  
Community Composition ◽  
Plant Community ◽  
Arctic Tundra ◽  
High Arctic ◽  
Plant Community Composition ◽  
The Future
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