Interactions 2010-2022 (Hochstetter Forland, NE Greenland)
Fieldwork / Study
Geolocation is 75.158474633769, -19.771638038457
“Interactions Working Group”
Important progress has been made in recent decades to describe and understand how arctic terrestrial vertebrate interact, especially concerning predator-prey interactions.
Indirect interactions between different prey species modulated by shared predators (e.g. Arctic fox) are believed to have important impacts on the structure and/or dynamics of some communities. Yet, our understanding of these types of interactions is still fragmentary.
The operational aim of the project is to promote the implementation of several common protocols that will (1) improve each collaborator’s knowledge at the site level and, more importantly, that will (2) be merged across sites and years to improve our understanding of the functioning and the influence of indirect interactions on arctic vertebrate communities in general.
Five types of data have been identified as being mandatories to answer questions related to this topic. These data sets will be collected using 5 specific protocols described in the following chapters:
- Monitor predation pressure using artificial nests
- Monitor real predation rates on Calidris nests using Tiny Tags thermologgers
- Observations of predators and lemmings
- Assessing lemming (or “rodent”) relative abundance
- Assessing “herbivores” (excl. rodents) relative abundance using “faeces transects”
Since 2016, 12 sites are implementing these protocols in Canada, Alsaka, Russia, Scandinavia and Greenland (3 sites including our own study site at Hochstetter Forland, Karupelv valley on Traill Island and Zackenberg). Seven additional sites (in North America and Svalbard) are implementing some of the protocols since 2018 (see figure).
|Title||Course start date||End date||Organisation||Department||Project study region|
|Peregrine falcons in South Greenland||07.04.2017||07.04.2017||Roskilde University (RUC)||Greenland, South-West|
|Trace gas flux survey of high arctic ecosystems||01.08.2015||22.08.2015||Aarhus University (AU)||Department of Bioscience||Greenland, North-East|
|Distance Sampling||15.07.2017||30.07.2017||Greenland Institute of Natural Resources (GINR)||Department of Birds and Mammals||Greenland, North-West|
|Caribou Jawbones||01.09.2017||15.10.2017||Greenland Institute of Natural Resources (GINR)||Department of Birds and Mammals||Greenland, South-West|
|Eco system patterns and processes at retreating glaciers||24.07.2013||09.08.2013||Aarhus University (AU)||Arctic Research Centre (ARC)||Greenland, South-West|
|Limnic Ecosystem patterns and processes near retreating glaciers – studies||22.07.2013||09.08.2013||Aarhus University (AU)||Arctic Research Centre (ARC)||Greenland, South-West|
|Impacts of shrub expansion and climate gradients on arthropod assemblages||26.06.2013||09.08.2013||Aarhus University (AU)||Arctic Research Centre (ARC)||Greenland, South-West|
|Snow cover in the Godthåbsfjord area 2007-2013||12.03.2013||03.04.2013||Aarhus University (AU)||Arctic Research Centre (ARC)||Greenland, South-West|
|Influence of environmental gradients on arctic plant communities||10.07.2013||09.08.2013||Aarhus University (AU)||Arctic Research Centre (ARC)||Greenland, South-West|
|Climate effects in terrestrial arctic ecosystems in Young Sund||08.07.2014||12.08.2014||Aarhus University (AU)||Arctic Research Centre (ARC)||Greenland, North-East|
|Annual Carbon Balance||15.04.2014||30.04.2014||Aarhus University (AU)||Arctic Research Centre (ARC)||Greenland, North-East|
|Interactions||05.07.2017||10.08.2017||Groupe de Recherche en Ecologie Arctique - ECOPOLARIS||Greenland, North-East|
|Drone- and functional ecological investigations of Tundra change||01.08.2016||23.08.2016||Aarhus University (AU)||Department of Bioscience||Greenland, North-East|
|Arthropod communities along climatic gradients||01.08.2016||21.08.2016||Aarhus University (AU)||Department of Bioscience||Greenland, North-East|
|Diversity and distributions of terrestrial arthropods along climatic gradients in a warming Greenland||15.06.2016||31.08.2016||Aarhus University (AU)||Department of Bioscience||Greenland, Mid-West|