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Nitrogen in rocks: an overlooked nutrient source in Arctic aquatic ecosystems

General

Organisation
Project start
17.09.2019
Project end
16.09.2021
Type of project
Research
Project theme
Limnic ecosystems
Project topic
Biogeochemistry
Biology
Ecology
Ecosystems, aquatic
Environmental science
Geology
Geoscience
Hydrology
Primary production

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, North-East
Fieldwork location

Geolocation is 74.4694302, -20.5733121

Fieldwork start
15.08.2020
Fieldwork end
15.08.2020

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, North-East
Fieldwork location

Geolocation is 74.4694302, -20.5733121

Fieldwork start
15.06.2021
Fieldwork end
07.07.2021

Project details

05.03.2020
Science / project plan

Nitrogen is a key nutrient and its availability defines structure and function of ecosystems. In the Arctic, extremely low nitrogen concentration is one of the reasons of the limited productivity across ecosystems. Here, we aim to evaluate the role of rocks as potential ecologically meaningful sources of nitrogen in Arctic freshwaters. The dramatic changes in the Arctic are intensifying rock weathering and hydrological fluxes, but the consequences on nitrogen availability to aquatic ecosystems have yet to be explored. We will combine both field and laboratory work, using isotopic and molecular tools, to provide new insight into the amount of rock nitrogen available for aquatic microorganisms. This project will provide essential information on the terrestrial-aquatic biogeochemical linkages in Arctic regions, with major impacts on our understanding of factors influencing global productivity.

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