Results 61 to 70 of about 43,646 (307)

Radiocarbon analysis of methane emitted from the surface of a raised peat bog [PDF]

, 2012
We developed a method to determine the radiocarbon (14C) concentration of methane (CH4) emitted from the surface of peatlands. The method involves the collection of ~ 9 L of air from a static gas sampling chamber which is returned to the laboratory in a ...
Aravena, C. Murray, Chanton, Chanton, Chanton, Charman, Clymo, Clymo, Forbrich, Garnett, Greenup, Hardie, IPCC, Laing, Langdon, Lassey, Lassey, Levin, Levin, Lowe, Lowry, M.H. Garnett, Marinier, Mastepanov, Quay, S.M.L. Hardie, Schuur, Slota, Strack, Stuiver, Wahlen   +30 more
core   +1 more source

Decoupling climate and human impacts on the nitrogen cycle during the Irish Bronze Age

Journal of Quaternary Science, EarlyView.
ABSTRACT Disentangling climate variability and human activity in past nitrogen cycling is key to understanding ecosystems. Previous studies in Ireland observed a widespread, permanent shift in terrestrial nitrogen cycling during Later Prehistory, potentially linked to intensifying land‐use.
Sarah Ferrandin, Gill Plunkett, Neil Ogle   +2 more
wiley   +1 more source

Impacts of land use, restoration, and climate change on tropical peat carbon stocks in the 21st century: Implications for climate mitigation [PDF]

, 2016
The climate mitigation potential of tropical peatlands has gained increased attention as Southeast Asian peatlands are being deforested, drained and burned at very high rates, causing globally significant carbon dioxide (CO2) emissions to the atmosphere.
Dai, Zhaohua, Frolking, Stephen E., Kurnianto, Sofyan, Warren, Matthew   +3 more
core   +1 more source

Net ecosystem productivity and its uncertainty in a diverse boreal peatland [PDF]

, 1999
Net ecosystem exchange (NEE) of CO2 was measured in four peatlands along plant community, hydrologic, and water chemistry gradients from bog to rich fen in a diverse peatland complex near Thompson, Manitoba, as part of the Boreal Ecosystem-Atmosphere ...
Bubier, Jill L., Crill, P, Frolking, Steve, Linder, Ernst   +3 more
core   +2 more sources

A new, ~4500‐year varve record and high‐resolution tephrochronology from lake Hämälänlampi, eastern Finland, provides age constraints for the Furnas C and the Glen Garry/Askja A‐2000 eruptions

Journal of Quaternary Science, EarlyView.
ABSTRACT The northern European distal cryptotephra framework is constantly developing both in terms of identification of new tephra horizons and improved age constraints for the already well‐established tephra marker horizons. However, many prehistoric tephra layers have only been dated by the radiocarbon method, with its inherent problems.
Maarit Kalliokoski, Veera Erola, Saija Saarni   +2 more
wiley   +1 more source

Informing innovative peatland conservation in light of palaeoecological evidence for the demise of Sphagnum imbricatum: the case of Oxenhope Moor, Yorkshire, UK [PDF]

Mires and Peat, 2016
Actively growing mires have high conservation value and the potential to sequester carbon. However, drainage, burning, overgrazing and atmospheric pollution have led to depauperation of native flora and loss of peat at many peatland sites.
J. McCarroll, F.M. Chambers, J.C. Webb, T. Thom   +3 more
doaj   +1 more source

Restoration of peatlands and greenhouse gas balances [PDF]

, 2008
In this chapter the impact of peatland restoration on greenhouse gas fluxes is discussed based on a literature review. Casestudies are presented covering different peatland types, different regions and different starting ...
Augustin, J., Cagampan, J.P., Drösler, M., Höper, H., Lundin, L., Moors, E.J., Vasander, H., Waddington, J.M., Wilson, D.   +8 more
core   +1 more source

Modeling impacts of changes in temperature and water table on C gas fluxes in an Alaskan peatland [PDF]

, 2015
Northern peatlands have accumulated a large amount of organic carbon (C) in their thick peat profile. Climate change and associated variations in soil environments are expected to have significant impacts on the C balance of these ecosystems, but the ...
Deng, Jia, Frolking, Steve, Li, Changsheng   +2 more
core   +2 more sources

Estimating Soil Compaction Risk at Regional Scales Using Meteorological Data and Soil Spectroscopy

Land Degradation &Development, EarlyView.
ABSTRACT Soil compaction is a significant form of soil degradation in Europe, reducing agricultural productivity, limiting carbon sequestration and increasing greenhouse gases emissions. In response, the forthcoming European Union Soil Monitoring and Resilience Law requires spatial assessment of topsoil and subsoil compaction risk at district, that is,
Felipe Bachion de Santana, Rebecca. L. Hall, Longnan Shi, Owen Fenton, Victoria Lowe, Giulia Bondi, Lilian O'Sullivan, Karen Daly   +7 more
wiley   +1 more source

Impact of Nitrogen Deposition on Carbon and Nitrogen Cycling in Peatlands Under Land‐Use Change

Land Degradation &Development, EarlyView.
ABSTRACT Increasing nitrogen (N) deposition significantly alters carbon and N dynamics in peatlands by affecting microbial processes, enhancing greenhouse gas emissions and nutrient leaching into adjacent waters. However, how peatland conversion for agriculture and forestry influences the fate of added N under elevated atmospheric deposition remains ...
Yujing Deng, Kyle S. Boodoo, Klaus‐Holger Knorr, Stephan Glatzel   +3 more
wiley   +1 more source