[1] Anthropogenic and environmental pressures on wetland hydrology may trigger changes in carbon (C) cycling, potentially exposing vast amounts of soil C to rapid decomposition. We measured soil CO2 efflux (Rs) continuously from 2009 to 2010 in a lower coastal plain forested wetland in North Carolina, U.S., to characterize its main environmental drivers. To understand and quantify the spatial v...

E€ective control of nonpoint source pollution from contaminants transported by runo€ requires information about the source areas of surface runo€. Variable source hydrology is widely recognized by hydrologists, yet few methods exist for identifying the saturated areas that generate most runo€ in humid regions. The Soil Moisture Routing model is a daily water balance model that simulates the hyd...

We present an approach for process conceptualization in hillslope hydrology. We develop and implement a series of virtual experiments, whereby the interaction between water flow pathways, source and mixing at the hillslope scale is examined within a virtual experiment framework. We define these virtual experiments as ‘numerical experiments with a model driven by collective field intelligence’. ...

Interrelated, biotic (flora and fauna) and abiotic (pedogenesis and hydrology) processes were examined at four sites (30, and approximately 1000–3000, 7000–12 000, and 125 000 years before present) in the northern Mojave Desert. Data collected at each included floral and faunal surveys; soil texture, structure, and morphology; and soil hydraulic properties. Separate measurements were made in sh...

We investigated the hydrologic, geochemical, and biogeochemical controls on stream chemical composition on the Green Lakes Valley and Andrews Creek watersheds using the alpine hydrochemical model (AHM). Both sites had comparable data sets from 1994 and 1996, including high-resolution spatial data and high-frequency time series of hydrology, geochemistry, and meteorology. The model of each water...

Journal of Environmental Hydrology Volume 19 Paper 14 May 2011 1 Restoration of large tracts of cropland to tallgrass prairie in north-central USA suggests that conversion will reduce runoff, infiltration, and groundwater recharge. In northwestern Minnesota, U.S.A., physically similar, adjacent native prairie (control) and cultivated sites were instrumented with time-domain reflectometry probes...

federal lands to facilitate resource extraction, recreation, and transportation (Havlick 2002) – enough to drive to the moon and back. While these roads provide important services, their construction and presence can also influence the hydrology, geomorphology, and ecosystem processes. They can substantially alter hillslope hydrology by reducing soil infiltration, concentrating water through ro...

Extreme rainfall events are the major driver of shallow landslide occurrences in mountainous and steep terrain regions around the world. Subsurface hydrology has a dominant role on the initiation of rainfall-induced shallow landslides, since changes in the soil water content affect significantly the soil shear strength. Rainfall infiltration produces an increase of soil water potential, which i...

Northern Hemisphere permafrost affected land ar­ eas contain abont twice as mnch carbon as the global at­ mosphere. This vast carbon pool is vnlnerable to acceler­ ated losses throngh mobilization and decomposition nnder projected global warming. Satellite data records sparming the past 3 decades indicate widespread redactions ( ~ 0.81.3 days decade “ ̂ ) in the mean aimnal snow cover extent and...

A discrete warming event (December 21, 2001–January 12, 2002) in the McMurdo Dry Valleys, Antarctica, enhanced glacier melt, stream flow, and melting of permafrost. Effects of this warming included a rapid rise in lake levels and widespread increases in soil water availability resulting from melting of subsurface ice. These increases in liquid water offset hydrologic responses to a cooling tren...