Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2023
Authors
Isabell EischeidAbstract
No abstract has been registered
Authors
Isabell Eischeid Jesper Madsen Rolf Anker Ims Bart A. Nolet Åshild Ønvik Pedersen Kees H.T. Schreven Eeva Marjatta Soininen Nigel Gilles Yoccoz Virve RavolainenAbstract
Arctic tundra vegetation is affected by rapid climatic change and fluctuating herbivore population sizes. Broad-billed geese, after their arrival in spring, feed intensively on belowground rhizomes, thereby disturbing soil, mosses, and vascular plant vegetation. Understanding of how springtime snowmelt patterns drive goose behavior is thus key to better predict the state of Arctic tundra ecosystems. Here, we analyzed how snowmelt progression affected springtime habitat selection and vegetation disturbance by pink-footed geese (Anser brachyrhynchus) in Svalbard during 2019. Our analysis, based on GPS telemetry data and field observations of geese, plot-based assessments of signs of vegetation disturbance, and drone and satellite images, covered two spatial scales (fine scale: extent 0.3 km2, resolution 5 cm; valley scale: extent 30 km2, resolution 10 m). We show that pink-footed goose habitat selection and signs of vegetation disturbance were correlated during the spring pre-breeding period; disturbances were most prevalent in the moss tundra vegetation class and areas free from snow early in the season. The results were consistent across the spatial scales and methods (GPS telemetry and field observations). We estimated that 23.4% of moss tundra and 11.2% of dwarf-shrub heath vegetation in the valley showed signs of disturbance by pink-footed geese during the study period. This study demonstrates that aerial imagery and telemetry can provide data to detect disturbance hotspots caused by pink-footed geese. Our study provides empirical evidence to general notions about implications of climate change and snow season changes that include increased variability in precipitation.
Authors
Chloé GrieuAbstract
No abstract has been registered
Authors
Erlend Hustad Honningdalsnes Helge Bonesmo Erik Stensrud Marstein Steve Völler Heine Nygard RiiseAbstract
No abstract has been registered
Authors
Erlend Hustad Honningdalsnes Helge Bonesmo Erik Stensrud Marstein Steve Völler Heine Nygard RiiseAbstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Einar StrandAbstract
No abstract has been registered
Authors
Till SeehusenAbstract
No abstract has been registered
Authors
Lars T. HavstadAbstract
No abstract has been registered
Authors
Lars T. HavstadAbstract
No abstract has been registered