Blar i Scientific publications på forfatter "Speed, James David Mervyn"
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Late snow melt moderates herbivore disturbance of the Arctic tundra
Anderson, Helen B.; Speed, James David Mervyn; Madsen, Jesper; Pedersen, Åshild Ønvik; Tombre, Ingunn; van der Wal, René (Journal article; Peer reviewed, 2016)Resilience of tundra vegetation to disturbance by herbivores can be low and lead to ecosystem state shifts. Pink-footed geese Anser brachyrhynchus are the most numerous herbivore on Svalbard and disturb vegetation when ... -
Synergies and trade-offs between ecosystem services in an alpine ecosystem grazed by sheep – An experimental approach
Austrheim, Gunnar; Speed, James David Mervyn; Evju, Marianne; Hester, Alison; Holand, Øystein; Loe, Leif Egil; Martinsen, Vegard; Mobæk, Ragnhild; Mulder, Jan; Steen, Harald; Thompson, Des B.A.; Mysterud, Atle (Peer reviewed; Journal article, 2016)Domestic livestock drives ecosystem changes in many of the world’s mountain regions, and can be the dominant influenceon soil, habitat and wildlife dynamics. Grazing impacts on ecosystem services (ES) vary according to ...