Title:
Long-term changes in organic matter and mercury transport to lakes in the sporadic discontinuous permafrost zone related to peat subsidence
Citation: Korosi, J.B., McDonald, J., Coleman, K.A., Palmer, M.J., Smol, J.P., Simpson, M.J., & Blais, J.M. (2015). Long-term changes in organic matter and mercury transport to lakes in the sporadic discontinuous permafrost zone related to peat subsidence. NWT Discovery Portal. https://nwtdiscoveryportal.enr.gov.nt.ca/geoportal/catalog/search/resource/details.page?uuid=%7BD10610A1-FF6B-4380-9AC1-5A273944FDC5%7D
Study Site: southern Northwest Territories
Purpose: Permafrost-supported peatlands near the southern limit of permafrost are experiencing dramatic landscape changes as a result of recent climate warming, which have the potential to impact aquatic ecosystems through changes in terrestrial run-off. Our objectives were to determine how terrestrial organic matter inputs to aquatic ecosystems in the southern Northwest Territories (Canada) changed as a result of peat subsidence, and whether terrestrial organic matter can be linked to sedimentary mercury.
Abstract: To accomplish this, we analyzed lipid biomarkers, lignin-derived phenols, and other geochemical proxies in sediment cores from two lakes (KAK-1 and TAH-7) affected by recent peat subsidence.
Supplemental Information Summary:
Research:
Further Info: Korosi, J.B., McDonald, J., Coleman, K.A., Palmer, M.J., Smol, J.P., Simpson, M.J., & Blais, J.M. (2015). Long-term changes in organic matter and mercury transport to lakes in the sporadic discontinuous permafrost zone related to peat subsidence. Limnology and Oceanography. doi: 10.1002/lno.10116
Status: Complete
Keywords:
soil carbon,
peat properties,
effects of disturbance,
Climate change,
Permafrost,
metals,
Geographical coordinates: North: 61.3513, South: 59.5357 East: -117.721 West: -121.5051
Bounding Temporal Extent: Start Date: 2012-03-01, End
Date: 2012-03-31
