Darius Semmens (Former Employee)
Science and Products
Filter Total Items: 76
Validating a method for transferring social values of ecosystem services between public lands in the Rocky Mountain region Validating a method for transferring social values of ecosystem services between public lands in the Rocky Mountain region
With growing pressures on ecosystem services, social values attributed to them are increasingly important to land management decisions. Social values, defined here as perceived values the public ascribes to ecosystem services, particularly cultural services, are generally not accounted for through economic markets or considered alongside economic and ecological values in ecosystem...
Authors
Benson C. Sherrouse, Darius J. Semmens
Market forces and technological substitutes cause fluctuations in the value of bat pest-control services for cotton Market forces and technological substitutes cause fluctuations in the value of bat pest-control services for cotton
Critics of the market-based, ecosystem services approach to biodiversity conservation worry that volatile market conditions and technological substitutes will diminish the value of ecosystem services and obviate the “economic benefits” arguments for conservation. To explore the effects of market forces and substitutes on service values, we assessed how the value of the pest-control...
Authors
Laura López-Hoffman, Ruscena Wiederholt, Chris Sansone, Kenneth J. Bagstad, Paul M. Cryan, James E. Diffendorfer, Joshua Goldstein, Kelsie LaSharr, John Loomis, Gary McCracken, Rodrigo A. Medellin, Amy Russell, Darius J. Semmens
Quantifying and valuing ecosystem services: An application of ARIES to the San Pedro River basin, USA Quantifying and valuing ecosystem services: An application of ARIES to the San Pedro River basin, USA
A large body of research exists that identifies and values ecosystem services - the benefits that ecosystems provide to humans (MA, 2005) - and their underlying ecological processes. However, the development of software decision support tools that integrate ecology, economics and geography that can be independently used within the public, private, academic and NGO sectors is a more...
Authors
Kenneth J. Bagstad, Darius J. Semmens, Ferdinando Villa, Gary Johnson
Climate change's impact on key ecosystem services and the human well-being they support in the US Climate change's impact on key ecosystem services and the human well-being they support in the US
Climate change alters the functions of ecological systems. As a result, the provision of ecosystem services and the well-being of people that rely on these services are being modified. Climate models portend continued warming and more frequent extreme weather events across the US. Such weather-related disturbances will place a premium on the ecosystem services that people rely on. We...
Authors
Erik J. Nelson, Peter Kareiva, Mary Ruckelshaus, Katie K. Arkema, Gary Geller, Evan Girvetz, Dave Goodrich, Virginia Matzek, Malin Pinsky, Walt Reid, Martin Saunders, Darius J. Semmens, Heather Tallis
Moving across the border: Modeling migratory bat populations Moving across the border: Modeling migratory bat populations
The migration of animals across long distances and between multiple habitats presents a major challenge for conservation. For the migratory Mexican free-tailed bat (Tadarida brasiliensis mexicana), these challenges include identifying and protecting migratory routes and critical roosts in two countries, the United States and Mexico. Knowledge and conservation of bat migratory routes is...
Authors
Wiederholt Ruscena, Laura López-Hoffman, Jon Cline, Rodrigo Medellin, Paul M. Cryan, Amy Russell, Gary McCracken, Jay Diffendorfer, Darius J. Semmens
National valuation of monarch butterflies indicates an untapped potential for incentive-based conservation National valuation of monarch butterflies indicates an untapped potential for incentive-based conservation
The annual migration of monarch butterflies (Danaus plexippus) has high cultural value and recent surveys indicate monarch populations are declining. Protecting migratory species is complex because they cross international borders and depend on multiple regions. Understanding how much, and where, humans place value on migratory species can facilitate market‐based conservation approaches...
Authors
James E. Diffendorfer, John Loomiz, Leslie Ries, Karen Oberhauser, Laura Lopez-Hoffman, Darius J. Semmens, Brice Semmens, Bruce Butterfield, Kenneth J. Bagstad, Josh Goldstein, Ruscena Wiederholt, Brady Mattson, Wayne E. Thogmartin
Non-USGS Publications**
Liu, Y., Mahmoud, M., Hartmann, H., Stewart, S., Wagener, T., Semmens, D., Stewart, R., Gupta, H., Dominguez, D., Hulse, D., Letcher, R., Rashleigh, B., Smith, C., Street, R., Ticehurst, J., Twery, M., van Delden, H., Waldick, R., White, D., and Winter, L., 2008, Formal scenario development for environmental impact assessment studies, in Jakeman, A., A. Voinov, A. E. Rizzoli, and S. Chen, (Eds.) Environmental Modelling, Software and Decision Support, 3. IDEA Book Series, Elsevier, 338 pp.
Kepner, W.G., Hernandez, M., Semmens, D.J., and Goodrich D.C.,2008, The Use of Scenario Analysis to Assess Future Landscape Change on Watershed Condition in the Pacific Northwest (USA), in Use of Landscape Sciences for Environmental Security: NATO Security through Science Series, Springer Publishers, The Netherlands. ISBN 978-1-4020-6588-0, pp. 237-261.
Kepner, W.G., Semmens, D.J., Hernandez, M., and Goodrich, D.C., 2008, Evaluating Hydrological Response to Forecasted Land-use Change, Chapter 15 in Special Issue of Association of American Geographers. North American Land Cover Summit. Washington, DC. pp. 275-292. ISBN 978-0-89291-271-1.
Semmens, D.J., Goodrich, D.C., Unkrich, C.L., Smith, R.E., Woolhiser, D.A., and Miller, S.N., 2008, KINEROS2 and the AGWA modeling framework, in Wheater, H., Sorooshian, S., and Sharma, K.D., eds., Hydrological Modelling In Arid and Semi-Arid Areas: Cambridge University Press, New York, 206pp.
Miller, S.N., Semmens, D.J., Goodrich, D.C., Hernandez, M., Miller, R.C., Kepner, W.G., and Guertin, D.P., 2007, The Automated Geospatial Watershed Assessment tool: Environmental Modeling and Software, v. 22, n. 3, p. 365-377.
Nikolova, M., S. Nedkov, D. Semmens, and S. Iankov, 2007, Environmental quality and landscape-risk assessment in the Yantra River Basin, in W. Kepner, W., Müller, F., Petrosillio, I., Jones, B., Krauze, K., Victorov, S., and Zurlini, G., (eds.), Use of Landscape Sciences for the Assessment of Environmental Security: NATO Security Through Science Series, Springer Publications, p. 202-217.
Kepner, W.G., Semmens, D.J., Basset, S.D., Mouat, D.A., Goodrich, D.C., 2004, Scenario analysis for the San Pedro River, analyzing hydrological consequences for a future environment: Environmental Modeling and Assessment, v. 94, p. 115-127.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 76
Validating a method for transferring social values of ecosystem services between public lands in the Rocky Mountain region Validating a method for transferring social values of ecosystem services between public lands in the Rocky Mountain region
With growing pressures on ecosystem services, social values attributed to them are increasingly important to land management decisions. Social values, defined here as perceived values the public ascribes to ecosystem services, particularly cultural services, are generally not accounted for through economic markets or considered alongside economic and ecological values in ecosystem...
Authors
Benson C. Sherrouse, Darius J. Semmens
Market forces and technological substitutes cause fluctuations in the value of bat pest-control services for cotton Market forces and technological substitutes cause fluctuations in the value of bat pest-control services for cotton
Critics of the market-based, ecosystem services approach to biodiversity conservation worry that volatile market conditions and technological substitutes will diminish the value of ecosystem services and obviate the “economic benefits” arguments for conservation. To explore the effects of market forces and substitutes on service values, we assessed how the value of the pest-control...
Authors
Laura López-Hoffman, Ruscena Wiederholt, Chris Sansone, Kenneth J. Bagstad, Paul M. Cryan, James E. Diffendorfer, Joshua Goldstein, Kelsie LaSharr, John Loomis, Gary McCracken, Rodrigo A. Medellin, Amy Russell, Darius J. Semmens
Quantifying and valuing ecosystem services: An application of ARIES to the San Pedro River basin, USA Quantifying and valuing ecosystem services: An application of ARIES to the San Pedro River basin, USA
A large body of research exists that identifies and values ecosystem services - the benefits that ecosystems provide to humans (MA, 2005) - and their underlying ecological processes. However, the development of software decision support tools that integrate ecology, economics and geography that can be independently used within the public, private, academic and NGO sectors is a more...
Authors
Kenneth J. Bagstad, Darius J. Semmens, Ferdinando Villa, Gary Johnson
Climate change's impact on key ecosystem services and the human well-being they support in the US Climate change's impact on key ecosystem services and the human well-being they support in the US
Climate change alters the functions of ecological systems. As a result, the provision of ecosystem services and the well-being of people that rely on these services are being modified. Climate models portend continued warming and more frequent extreme weather events across the US. Such weather-related disturbances will place a premium on the ecosystem services that people rely on. We...
Authors
Erik J. Nelson, Peter Kareiva, Mary Ruckelshaus, Katie K. Arkema, Gary Geller, Evan Girvetz, Dave Goodrich, Virginia Matzek, Malin Pinsky, Walt Reid, Martin Saunders, Darius J. Semmens, Heather Tallis
Moving across the border: Modeling migratory bat populations Moving across the border: Modeling migratory bat populations
The migration of animals across long distances and between multiple habitats presents a major challenge for conservation. For the migratory Mexican free-tailed bat (Tadarida brasiliensis mexicana), these challenges include identifying and protecting migratory routes and critical roosts in two countries, the United States and Mexico. Knowledge and conservation of bat migratory routes is...
Authors
Wiederholt Ruscena, Laura López-Hoffman, Jon Cline, Rodrigo Medellin, Paul M. Cryan, Amy Russell, Gary McCracken, Jay Diffendorfer, Darius J. Semmens
National valuation of monarch butterflies indicates an untapped potential for incentive-based conservation National valuation of monarch butterflies indicates an untapped potential for incentive-based conservation
The annual migration of monarch butterflies (Danaus plexippus) has high cultural value and recent surveys indicate monarch populations are declining. Protecting migratory species is complex because they cross international borders and depend on multiple regions. Understanding how much, and where, humans place value on migratory species can facilitate market‐based conservation approaches...
Authors
James E. Diffendorfer, John Loomiz, Leslie Ries, Karen Oberhauser, Laura Lopez-Hoffman, Darius J. Semmens, Brice Semmens, Bruce Butterfield, Kenneth J. Bagstad, Josh Goldstein, Ruscena Wiederholt, Brady Mattson, Wayne E. Thogmartin
Non-USGS Publications**
Liu, Y., Mahmoud, M., Hartmann, H., Stewart, S., Wagener, T., Semmens, D., Stewart, R., Gupta, H., Dominguez, D., Hulse, D., Letcher, R., Rashleigh, B., Smith, C., Street, R., Ticehurst, J., Twery, M., van Delden, H., Waldick, R., White, D., and Winter, L., 2008, Formal scenario development for environmental impact assessment studies, in Jakeman, A., A. Voinov, A. E. Rizzoli, and S. Chen, (Eds.) Environmental Modelling, Software and Decision Support, 3. IDEA Book Series, Elsevier, 338 pp.
Kepner, W.G., Hernandez, M., Semmens, D.J., and Goodrich D.C.,2008, The Use of Scenario Analysis to Assess Future Landscape Change on Watershed Condition in the Pacific Northwest (USA), in Use of Landscape Sciences for Environmental Security: NATO Security through Science Series, Springer Publishers, The Netherlands. ISBN 978-1-4020-6588-0, pp. 237-261.
Kepner, W.G., Semmens, D.J., Hernandez, M., and Goodrich, D.C., 2008, Evaluating Hydrological Response to Forecasted Land-use Change, Chapter 15 in Special Issue of Association of American Geographers. North American Land Cover Summit. Washington, DC. pp. 275-292. ISBN 978-0-89291-271-1.
Semmens, D.J., Goodrich, D.C., Unkrich, C.L., Smith, R.E., Woolhiser, D.A., and Miller, S.N., 2008, KINEROS2 and the AGWA modeling framework, in Wheater, H., Sorooshian, S., and Sharma, K.D., eds., Hydrological Modelling In Arid and Semi-Arid Areas: Cambridge University Press, New York, 206pp.
Miller, S.N., Semmens, D.J., Goodrich, D.C., Hernandez, M., Miller, R.C., Kepner, W.G., and Guertin, D.P., 2007, The Automated Geospatial Watershed Assessment tool: Environmental Modeling and Software, v. 22, n. 3, p. 365-377.
Nikolova, M., S. Nedkov, D. Semmens, and S. Iankov, 2007, Environmental quality and landscape-risk assessment in the Yantra River Basin, in W. Kepner, W., Müller, F., Petrosillio, I., Jones, B., Krauze, K., Victorov, S., and Zurlini, G., (eds.), Use of Landscape Sciences for the Assessment of Environmental Security: NATO Security Through Science Series, Springer Publications, p. 202-217.
Kepner, W.G., Semmens, D.J., Basset, S.D., Mouat, D.A., Goodrich, D.C., 2004, Scenario analysis for the San Pedro River, analyzing hydrological consequences for a future environment: Environmental Modeling and Assessment, v. 94, p. 115-127.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.