Despite their prevalence, little attention has been given to quantifying arid land soil and ecosystem carbon fluxes over prolonged, annually occurring dry periods. We measured soil [CO2] profiles and fluxes (Fs) along with volumetric soil moisture and temperature in bare interplant canopy soils and …
Journal: Journal Of Geophysical Research: Biogeosciences, Volume 118 (4): 1593-1603 (2013), ISBN . DOI: 10.1002/2013JG002495 Sites: US-Whs
Ecosystem respiration (Reco) is one of the largest terrestrial carbon (C) fluxes. The effect of climate change on Reco depends on the …
Journal: Global Change Biology, Volume 19 (2): 649-661 (2013), ISBN . DOI: 10.1111/gcb.12058 Sites: US-EML
Peatlands and forested wetlands can cover a large fraction of the land area and contain a majority of the regional carbon pool in wet northern temperate landscapes. We used the LANDIS-II forest landscape succession model coupled with a model of plant community …
Journal: Ecosystems, Volume 16 (3): 491-507 (2013), ISBN . DOI: 10.1007/s10021-012-9624-1 Sites: US-Los
Climate-induced changes to permafrost are altering high latitude landscapes in ways that could increase the vulnerability of the vast soil carbon pools of the region. Permafrost thaw is temporally dynamic and spatially heterogeneous because, in addition to the thickening of the active …
Journal: Environmental Research Letters, Volume 8 (3): n/a-n/a (2013), ISBN . DOI: 10.1088/1748-9326/8/3/035016 Sites: US-EML
Permafrost thaw can affect decomposition rates by changing environmental conditions and litter quality. As permafrost thaws, soils warm and thermokarst (ground subsidence) features form, causing some areas to become wetter while other areas become drier. We used a common substrate to measure how permafrost thaw affects decomposition …
Journal: Journal Of Geophysical Research: Biogeosciences, Volume 118 (3): 1133-1143 (2013), ISBN . DOI: 10.1002/jgrg.20089 Sites: US-EML
The binary nature of Northern California’s ecohydrology, in which water is either abundantly available or scarce, should be reflected in the root architecture of the native blue oak. Our objective was to quantify carbon storage and understand how the form of the root system facilitates ecosystem functioning despite the asynchrony …
Journal: Journal Of Geophysical Research: Biogeosciences, Volume 118 (1): 135-147 (2013), ISBN . DOI: 10.1029/2012jg002160 Sites: US-Ton
The energy balance at most surface-atmosphere flux research sites remains unclosed. The mechanisms underlying the discrepancy between measured energy inputs and outputs across the global FLUXNET tower network are still under debate. Recent reviews have identified …
Journal: Agricultural And Forest Meteorology, Volume 171-172: 137-152 (2013), ISBN . DOI: 10.1016/j.agrformet.2012.11.004 Sites: BR-Ma2
Increasing demand for agricultural commodities such as grain for feed and feedstocks for biofuels are driving rapid land use change. We studied the effect of agricultural land-use change on two historical land use types for three different cropping systems using …
Journal: Agricultural And Forest Meteorology, Volume 182-183: 1-12 (2013), ISBN . DOI: 10.1016/j.agrformet.2013.07.015 Sites: US-KL1, US-KL2, US-KL3, US-KM1, US-KM2, US-KM3, US-KM4
Despite the importance of mangrove ecosystems in the global carbon budget, the relationships between environmental drivers and carbon dynamics in these forests remain poorly understood. This limited understanding is partly a result of the challenges associated with in situ flux studies. Tower-based CO2 eddy covariance …
Journal: Biogeosciences, Volume 10 (3): 2145-2158 (2013), ISBN . DOI: 10.5194/bg-10-2145-2013 Sites: US-Skr
Eddy covariance flux towers were used to measure net ecosystem production over three adjacent agricultural fields in Manitoba, Canada, from 2009 to 2011. Two fields were converted from long-term perennial hay/pasture to annual cropping, while the third field served as a control field that was maintained as hay/pasture. One converted …
Journal: Agricultural And Forest Meteorology, Volume 182-183: 67-75 (2013), ISBN . DOI: 10.1016/j.agrformet.2013.07.008 Sites: CA-MA1, CA-MA2, CA-MA3