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  1. Climate driven changes to rainfall and streamflow patterns in a model tropical island hydrological system

    Rising atmospheric CO2 and resulting warming are expected to impact freshwater resources in the tropics, but few studies have documented how natural stream flow regimes in tropical watersheds will respond to changing rainfall patterns. To address this data gap, we utilized a space-for-time substitution across a naturally occurring and highly...

    Author(s):
    Ayron M. Strauch; Richard A. MacKenzie; Christian P. Giardina; Gregory L. Bruland
    Year:
    2015
    Keywords:
    Hawai'i, Flow regime, Freshwater ecosystems, Tropical streams, Flash floods, Climate change
    Source:
    Journal of Hydrology. 523: 160-169

  2. Changes in streamflow following timber harvest in southwestern Oregon.

    Changes in size of annual and seasonal yields and instantaneous peak flows were determined on three small, experimental watersheds following three silvicultural methods of timber harvest. Changes are related to changes in forest hydrologic system.

    Author(s):
    R. Dennis Harr; Richard L. Fredriksen; Jack Rothacher
    Year:
    1979
    Keywords:
    Streamflow -)forestry methods, water supply, logging (-hydrology, runoff -)vegetation
    Source:
    Res. Pap. PNW-RP-249. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: 22 p., illustrated

  3. Prescribed Fire: Effects on Water Quality and Forest Nutrient Cycling

    Prescribed fire, a practice applied annually to about 106 hectares of forests in the southeastern United States, had limited effects on soils, nutrient cycling, and hydrologic systems of a coastal plain pine forest. Hydrologic fluxes of nitrogen, phosphorus, sulfur, and basic cations, from burned pine litter to ground and stream waters, are not likely to have...

    Author(s):
    D. D. Richter; C. W. Ralston; W. R. Harms
    Year:
    1982
    Keywords:
    Source:
    Science

  4. An eco-hydrological project on Turkey Creek watershed, South Carolina, U.S.A.

    The low-gradient, forested wetland landscape of the southeastern United States’ Coastal Plain represents an important eco-hydrologic system, yet there is a very little information available on the region’s ecological, hydrological and biogeochemical processes. Long-term hydrologic monitoring can provide the information needed to understand basic hydrologic processes...

    Author(s):
    Devendra Amatya; Carl Trettin
    Year:
    2008
    Keywords:
    Low-gradient, Coastal plain, forested wetlands, water management, water quality, monitoring, modeling, Francis Marion National Forest
    Source:
    Integrated Water Management: Practical Experiences and Case Studies: 115-126

  5. Human alterations of Earth's fresh water

    One of the biggest challenges society faces in this new century is figuring out how to satisfy the water demands of 8 billion people while at the same time protecting the aquatic ecosystems and ecological services that humans and all species depend upon. Since 1950, water demands worldwide have more than tripled, while the scale of our dams and reservoirs, river...

    Author(s):
    Sandra Postel
    Year:
    2000
    Keywords:
    Source:
    In: Proceedings of a Conference on Sustainability of Wetlands and Water Resources, May 23-25, Oxford, Mississippi, eds. Holland, Marjorie M., Warren, Melvin L., Stanturf, John A., p. 1-3

  6. Impacts of wildfire severity on hydraulic conductivity in forest, woodland, and grassland soils (Chapter 7)

    Forest, woodland, and grassland watersheds throughout the world are major sources of high quality water for human use because of the nature of these soils to infiltrate, store, and transmit most precipitation instead of quickly routing it to surface runoff. This characteristic of these wildland soils is due to normally high infiltration rates, porosities, and hydraulic...

    Author(s):
    Daniel G. Neary
    Year:
    2011
    Keywords:
    wildfire, hydraulic conductivity, forest, woodland, and grassland soils, watersheds
    Source:
    In: Elango, Lakshmanan, ed. Hydraulic Conductivity - Issues, Determination and Applications. New York, NY: InTech. p. 123-142.

  7. Changes in soil moisture and pore pressure after harvesting a forested hillslope in northern California

    Abstract - In 1987, a 0.83-ha zero-order swale was instrumented with 58 pierometers and 25 tensiometers along several hillslope transects. Through 1993, soil moisture conditions were measured by pressure transducers connected to a digital data logger recording at 15-minute intervals. In August 1989, the 100-year-old second-growth forest in the swale was felled. Logs...

    Author(s):
    Elizabeth T. Keppeler; Robert R. Ziemer; Peter H. Cafferata
    Year:
    1994
    Keywords:
    PSW4351, Caspar Creek, hillslope hydrology, piezometer, soil moisture, timber harvest, soil piping
    Source:
    In: Marston, Richard A., and Victor R. Hasfurther (eds). Proceedings, Annual Summer Symposium of the American Water Resources Association: Effects of Human-Induced Changes on Hydrologic Systems, 26-29 June 1994, Jackson Hole, Wyoming. American Water Resources Association, Bethesda, Maryland. p. 205-214.

  8. Glaciers as a source of ancient and labile organic matter to the marine environment.

    Riverine organic matter supports of the order of one-fifth of estuarine metabolism. Coastal ecosystems are therefore sensitive to alteration of both the quantity and lability of terrigenous dissolved organic matter (DOM) delivered by rivers. Here we characterize streamwater DOM from 11 coastal watersheds on the Gulf of Alaska that vary widely in glacier coverage. In...

    Author(s):
    Eran Hood; Jason Fellman; Robert G.M. Spencer; Peter J. Hernes; Rick Edwards; David D'Amore; Durelle Scott
    Year:
    2009
    Keywords:
    glaciers, DOM, bioavailability, flux
    Source:
    Nature. 462(24/31): 1044-1048

  9. Hydrologic influences of forest vegetation in a changing world: Learning from Forest Service experimental forests, ranges, and watersheds

    The importance of forests in providing reliable sources of clean water cannot be underestimated. Therefore, there is a pressing need to understand how hydrologic systems function in forested ecosystems, in response to a variety of traditional and novel stressors and environments. Long-term watershed research on Experimental Forests and Ranges (EFRs) of the Forest...

    Author(s):
    Thomas E. Lisle; Mary Beth Adams; Leslie M. Reid; Kelly Elder
    Year:
    2010
    Keywords:
    hydrology, experimental forests, climate change, forestry
    Source:
    In: Adams, Mary Beth; NcNeel, Joe; Rodriguez-Franco, Carlos. 2010. Meeting current and future conservation challenges through the synthesis of long-term silviculture and range management research. Gen. Tech. Rep. WO-84. Washington, DC: U.S. Department of Agriculture, Forest Service: 37-49.

  10. Effects of wildfire on catchment runoff response: a modeling approach to detect changes in snow-dominated forested catchments

    Wildfire is an important disturbance affecting hydrological processes through alteration of vegetation cover and soil characteristics. The effects of fire on hydrological systems at the catchment scale are not well known, largely because site specific data from both before and after wildfire are rare. In this study a modelling approach was employed for change detection...

    Author(s):
    Jan Seibert; Jeffrey J. McDonnell; Richard D. Woodsmith
    Year:
    2010
    Keywords:
    conceptual runoff model, Entiat, land-cover change, runoff change detection, wildfire
    Source:
    Hydrology Research. 41(5): 378-390

  11. Measuring aerobic respiration in stream ecosystems using the resazurin-resorufin system

    The use of smart tracers to study hydrologic systems is becoming more widespread. Smart tracers are compounds that irreversibly react in the presence of a process or condition under investigation. Resazurin (Raz) is a smart tracer that undergoes an irreversible reduction to resorufin (Rru) in the presence of cellular metabolic activity. We quantified the relationship...

    Author(s):
    R. González-Pinzón; R. Haggerty; D.D. Myrold
    Year:
    2012
    Keywords:
    aerobic, respiration, stream, ecosystem, hydrologic, resazurin-resorufin
    Source:
    Journal of Geophysical Research

  12. The role of bedrock groundwater in rainfall-runoff response at hillslope and catchment scales

    Bedrock groundwater dynamics in headwater catchments are poorly understood and poorly characterized. Direct hydrometric measurements have been limited due to the logistical challenges associated with drilling through hard rock in steep, remote and often roadless terrain. We used a new portable bedrock drilling system to explore bedrock groundwater dynamics aimed at...

    Author(s):
    C. Gabrielli; J.J. McDonnell; W.T. Jarvis
    Year:
    2012
    Keywords:
    Hillslope, hydrology, Rainfall, runoff, Bedrock, groundwater, Stormflow
    Source:
    Journal of Hydrology. 450-451: 117-133

  13. A history of watershed research in experimental forests of the Interior Highlands

    The history of watershed research in the Interior Highlands can be divided into four periods: Initial Start and Stumble (1930s–1950s), Reestablishment and Renewal (1960–1980), Partnerships and Expansion (1980–1990), and New Scales and Paths (1990–present). While each of these periods was marked by different societal concerns and scientific questions, experimental...

    Author(s):
    Daniel A. Marion; Donald Turton; Maria Schleidt
    Year:
    2014
    Keywords:
    Interior Highlands · Forest hydrology · Paired watershed · Experimental forest · Research history
    Source:
    USDA Forest Service Experimental Forests and Ranges: Research for the Long-Term” Springer: New York City, pp. 341-366

  14. Overview of geology, hydrology, geomorphology, and sediment budget of the Deschutes River Basin, Oregon.

    Within the Deschutes River basin of central Oregon, the geology, hydrology, and physiography influence geomorphic and ecologic processes at a variety of temporal and spatial scales. Hydrologic and physiographic characteristics of the basin are related to underlying geologic materials. In the southwestern part of the basin, Quaternary volcanism and tectonism has created...

    Author(s):
    Jim E. O'Connor; Gordon E. Grant; Tana L. Haluska
    Year:
    2003
    Keywords:
    Source:
    American Geophysical Union: 7-29

  15. Parameterization guidelines and considerations for hydrologic models

     Imparting knowledge of the physical processes of a system to a model and determining a set of parameter values for a hydrologic or water quality model application (i.e., parameterization) are important and difficult tasks. An exponential...

    Author(s):
     R. W. Malone; G. Yagow; C. Baffaut; M.W  Gitau; Z. Qi; Devendra Amatya; P.B.   Parajuli; J.V. Bonta; T.R.  Green
    Year:
    2015
    Keywords:
    Hydrologic processes, model calibration, multiple criteria, optimization, parameters, validation
    Source:
    Transactions of the ASABE

  16. Climate-forest-water-people relations: Seven system delineations

    In this chapter, we review current scientific understanding and hypotheses at seven system delineations that build up from the level of a ‘tree’ interacting with water, to that of a social-ecological system at the scale of landscapes. A system delineation separates internal entities that interact dynamically from external entities that may have a one-way influence but...

    Author(s):
    Meine van Noordwijk; Irena F. Creed; Julia A. Wei Xiaohua (Adam) Jones; Mark Gush; Juan A. Blanco; Caroline A. Sullivan; Kevin Bishop; Daniel Murdiyarso; Jianchu Xu; Marius Claassen; Steven G. McNulty; David Ellison; Anders Malmer; Leendert A. (Sampurno) Bruijnzeel; Richard J. Harper; Hosea Mwangi; Andrew Hacket-Pain; Chloe Orland
    Year:
    2018
    Keywords:
    Source:
    In:Forest and Water on a Changing Planet: Vulnerability, Adaptation and Governance Opportunities: A Global Assessment Report (I.F. Creed and M. van Noordwijk, eds.). IUFRO World Series

  17. Urban development and environmental degradation

    At the beginning of the 21st century more than 50% of the world’s population lived in cities. By 2050, this percentage will exceed 60%, with the majority of growth occurring in Asia and Africa. As of 2020 there are 31 megacities, cities whose population exceeds 10 million, and 987 smaller cities whose populations are greater than 500 thousand but less than 5 million in...

    Author(s):
    Wayne C. Zipperer; Robert Northrop; Michael Andreu
    Year:
    2020
    Keywords:
    urbanization, megacities, hydrology, deforestation, urban heat island, planning
    Source:
    Oxford Research Encyclopedia of Environmental Science

  18. Climate change vulnerability and adaptation in the North Cascades region, Washington

    The North Cascadia Adaptation Partnership (NCAP) is a science-management partnership consisting of the U.S. Department of Agriculture Forest Service Mount Baker-Snoqualmie and Okanogan-Wenatchee National Forests and Pacific Northwest Research Station; North Cascades National Park Complex; Mount Rainier National Park; and University of Washington Climate Impacts Group....

    Author(s):
    Crystal L. Raymond; David L. Peterson; Regina M. Rochefort
    Year:
    2014
    Keywords:
    Access, adaptation, climate change, fire, forest ecosystems, fisheries, hydrology, North Cascade Range, North Cascadia Adaptation Partnership, roads, science-management partnership, vegetation, wildlife
    Source:
    Gen. Tech. Rep. PNW-GTR-892. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 279 p.
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