The vegetation in the core region of the North American monsoon (NAM) system changes dramatically after the onset of the summer rains so that large changes may be expected in the surface fluxes of radiation, heat, and moisture. Most of this region lies in the rugged terrain of western Mexico and very few measurements of these fluxes …
Journal: Journal Of Climate, Volume 20 (9): 1810-1820 (2007), ISBN . DOI: 10.1175/jcli4088.1 Sites: US-Whs, US-Wkg
The allometry and partitioning of above- and belowground tree biomass was studied in an age-sequence of four eastern white pine (Pinus strobus L.) forests (2-, 15-, 30-, and 65-year-old) in southern Ontario, Canada. Biomass in each tree component, i.e. foliage, …
Journal: Forest Ecology And Management, Volume 253 (1-3): 68-80 (2007), ISBN . DOI: 10.1016/j.foreco.2007.07.003 Sites: CA-TP1, CA-TP2, CA-TP3, CA-TP4
The age-dependent variability of ecosystem carbon (C) fluxes was assessed by measuring the net ecosystem exchange of C (NEE) in five managed forest stands in northern Wisconsin, USA. The study sites ranged in age from 3-year-old clearcut to mature stands (65 years). All stands, except the clearcut, …
Journal: Ecosystems, Volume 10 (2): 187-203 (2007), ISBN . DOI: 10.1007/s10021-007-9018-y Sites: US-Wi0, US-Wi1, US-Wi2, US-Wi3, US-Wi4, US-Wi6, US-Wi8
We determined concentrations and fluxes of dissolved organic carbon (DOC) in precipitation, throughfall, forest floor and mineral soil leachates from June 2004 to May 2006 across an age-sequence (2-, 15-, 30-, and 65-year-old) of white pine (Pinus strobus L.) forests in southern Ontario, Canada. …
Journal: Biogeochemistry, Volume 86 (1): 1-17 (2007), ISBN . DOI: 10.1007/s10533-007-9138-7 Sites: CA-TP3, CA-TP4
Understanding relationships between canopy structure and the seasonal dynamics of photosynthetic uptake of CO2 by forest canopies requires improved knowledge of canopy phenology at eddy covariance flux tower sites. We investigated whether digital …
Journal: Oecologia, Volume 152 (2): 323-334 (2007), ISBN . DOI: 10.1007/s00442-006-0657-z Sites: US-Bar
Although mature black spruce forests are a dominant cover type in the boreal forest of North America, it is not clear how their carbon (C) budgets vary across the continent. …
Journal: Global Change Biology, Volume 13 (1): 89-107 (2007), ISBN . DOI: 10.1111/j.1365-2486.2006.01281.x Sites: CA-Man, CA-Obs, CA-Qfo
We used a single-beam, first return profiling LIDAR (Light Detection and Ranging) measurements of canopy height, intensive biometric measurements in plots, and Forest Inventory and Analysis (FIA) data to quantify forest structure and ladder fuels (defined as vertical fuel continuity between the understory and canopy) in the New Jersey …
Journal: Remote Sensing Of Environment, Volume 108 (2): 123-129 (2007), ISBN . DOI: 10.1016/j.rse.2006.09.032 Sites: US-Ced, US-Slt
Climate, vegetation cover, and management create finescale heterogeneity in unirrigated agricultural regions, with important but not well-quantified consequences for spatial and temporal variations in surface CO2, water, and heat fluxes. Eddy covariance fluxes were measured in seven agricultural fields—comprising winter wheat, …
Journal: Earth Interactions, Volume 11 (17): 1-21 (2007), ISBN . DOI: 10.1175/EI231.1 Sites: US-ARM
Journal: Tellus, Volume 59B: 223-233 (2007), ISBN . DOI: Sites: US-Uaf
Journal: J. Agric. Meteorol., Volume 63: 171-183 (2007), ISBN . DOI: Sites: US-Uaf