John Wesley Powell Center for Analysis and Synthesis

Publications

Filter Total Items: 104
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Year Published: 2014

Discontinuities, cross-scale patterns, and the organization of ecosystems

Ecological structures and processes occur at specific spatiotemporal scales, and interactions that occur across multiple scales mediate scale-specific (e.g., individual, community, local, or regional) responses to disturbance. Despite the importance of scale, explicitly incorporating a multi-scale perspective into research and management actions...

Nash, Kirsty L.; Allen, Craig R.; Angeler, David G.; Barichievy, Chris; Eason, Tarsha; Garmestani, Ahjond S.; Graham, Nicholas A.J.; Granholm, Dean; Knutson, Melinda; Nelson, R. John; Nystrom, Magnus; Stow, Craig A.; Sandstrom, Shana M.
Discontinuities, cross-scale patterns, and the organization of ecosystems; 2014; Article; Journal; Ecology; Nash, Kirsty L.; Allen, Craig R.; Angeler, David G.; Barichievy, Chris; Eason, Tarsha; Garmestani, Ahjond S.; Graham, Nicholas A. J.; Granholm, Dean; Knutson, Melinda; Nelson, R. John; Nystrom, Magnus; Stow, Craig A.; Sandstrom, Shana M.

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Year Published: 2013

Resilience to stress and disturbance, and resistance to Bromus tectorum L. invasion in cold desert shrublands of western North America

Alien grass invasions in arid and semi-arid ecosystems are resulting in grass–fire cycles and ecosystem-level transformations that severely diminish ecosystem services. Our capacity to address the rapid and complex changes occurring in these ecosystems can be enhanced by developing an understanding of the environmental factors and ecosystem...

Chambers, Jeanne C.; Bradley, Bethany A.; Brown, Cynthia S.; D'Antonio, Carla; Germino, Matthew J.; Grace, James B.; Hardegree, Stuart P.; Miller, Richard F.; Pyke, David A.
Resilience to stress and disturbance, and resistance to Bromus tectorum l. invasion in cold desert shrublands of western North America; 2013; Article; Journal; Ecosystems; Chambers, Jeanne C.; Bradley, Bethany A.; Brown, Cynthia S.; D'Antonio, Carla; Germino, Matthew J.; Grace, James B.; Hardegree, Stuart P.; Miller, Richard F.; Pyke, David A.

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Year Published: 2013

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...

Ruscena, Wiederholt; López-Hoffman, Laura; Cline, Jon; Medellin, Rodrigo; Cryan, Paul M.; Russell, Amy; McCracken, Gary; Diffendorfer, Jay; Semmens, Darius J.
Moving across the border: modeling migratory bat populations; 2013; Article; Journal; Ecosphere; Ruscena, Wiederholt; Lopez-Hoffman, Laura; Cline, Jon; Medellin, Rodrigo; Cryan, Paul; Russell, Amy; McCracken, Gary; Diffendorfer, Jay; Semmens, Darius J.

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Year Published: 2013

Injection-induced earthquakes

Earthquakes in unusual locations have become an important topic of discussion in both North America and Europe, owing to the concern that industrial activity could cause damaging earthquakes. It has long been understood that earthquakes can be induced by impoundment of reservoirs, surface and underground mining, withdrawal of fluids and gas from...

Ellsworth, William L.
Injection-induced earthquakes; 2013; Article; Journal; Science; Ellsworth, William L.

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Year Published: 2013

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...

Diffendorfer, Jay E.; Loomis, John B.; Ries, Leslie; Oberhauser, Karen; Semmens, Darius; Semmens, Brice; Butterfield, Bruce; Bagstad, Ken; Goldstein, Josh; Wiederholt, Ruscena; Mattsson, Brady; Thogmartin, Wayne E.
National valuation of monarch butterflies indicates an untapped potential for incentive-based conservation; 2013; Article; Journal; Conservation Letters; Diffendorfer, Jay E.; Loomis, John B.; Ries, Leslie; Oberhauser, Karen; Semmens, Darius; Semmens, Brice; Butterfield, Bruce; Bagstad, Ken; Goldstein, Josh; Wiederholt, Ruscena; Mattsson, Brady; Thogmartin, Wayne E.

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Year Published: 2013

Tourism values for Mexican free-tailed bat (Tadarida brasiliensis mexicana) viewing

Migratory species provide diverse ecosystem services to people, but these values have seldom been estimated rangewide for a single species. In this article, we summarize visitation and consumer surplus for recreational visitors to viewing sites for the Mexican free-tailed bat (Tadarida brasiliensis mexicana) throughout the Southwestern United...

Bagstad, Kenneth J.; Widerholdt, Ruscena
Tourism values for Mexican free-tailed bat (Tadarida brasiliensis mexicana) viewing; 2013; Article; Journal; Human Dimensions of Wildlife; Bagstad, Kenneth J.; Widerholdt, Ruscena

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Year Published: 2013

Measuring the relative resilience of subarctic lakes to global change: redundancies of functions within and across temporal scales

1. Ecosystems at high altitudes and latitudes are expected to be particularly vulnerable to the effects of global change. We assessed the responses of littoral invertebrate communities to changing abiotic conditions in subarctic Swedish lakes with long-term data (1988–2010) and compared the responses of subarctic lakes with those of more southern...

Angeler, David G.; Allen, Craig R.; Johnson, Richard K.
Measuring the relative resilience of subarctic lakes to global change: redundancies of functions within and across temporal scales; 2013; Article; Journal; Journal of Applied Ecology; Angeler, David G.; Allen, Craig R.; Johnson, Richard K.

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Year Published: 2013

Selection of hyperspectral narrowbands (HNBs) and composition of hyperspectral twoband vegetation indices (HVIs) for biophysical characterization and discrimination of crop types using field reflectance and Hyperion/EO-1 data

The overarching goal of this study was to establish optimal hyperspectral vegetation indices (HVIs) and hyperspectral narrowbands (HNBs) that best characterize, classify, model, and map the world's main agricultural crops. The primary objectives were: (1) crop biophysical modeling through HNBs and HVIs, (2) accuracy assessment of crop type...

Thenkabail, P.S.; Mariotto, I.; Gumma, M.K.; Middleton, E.M.; Landis, D.R.; Huemmrich, K.F.
Selection of hyperspectral narrowbands (HNBs) and composition of hyperspectral twoband vegetation indices (HVIs) for biophysical characterization and discrimination of crop types using field reflectance and Hyperion/EO-1 data; 2013; Article; Journal; IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing; Thenkabail, P. S.; Mariotto, I.; Gumma, M. K.; Middleton, E. M.; Landis, D. R.; Huemmrich, K. F.

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Year Published: 2013

How do migratory species add ecosystem service value to wilderness? Calculating the spatial subsidies provided by protected areas

Species that migrate through protected and wilderness areas and utilize their resources, deliver ecosystem services to people in faraway locations. The mismatch between the areas that most support a species and those areas where the species provides most benefits to society can lead to underestimation of the true value of protected areas such as...

Lopez-Hoffman, Laura; Semmens, Darius J.; Diffendorfer, Jay

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Year Published: 2013

A framework for quantitative assessment of impacts related to energy and mineral resource development

Natural resource planning at all scales demands methods for assessing the impacts of resource development and use, and in particular it requires standardized methods that yield robust and unbiased results. Building from existing probabilistic methods for assessing the volumes of energy and mineral resources, we provide an algorithm for consistent...

Haines, Seth S.; Diffendorfer, James; Balistrieri, Laurie S.; Berger, Byron R.; Cook, Troy A.; Gautier, Donald L.; Gallegos, Tanya J.; Gerritsen, Margot; Graffy, Elisabeth; Hawkins, Sarah; Johnson, Kathleen; Macknick, Jordan; McMahon, Peter; Modde, Tim; Pierce, Brenda; Schuenemeyer, John H.; Semmens, Darius; Simon, Benjamin; Taylor, Jason; Walton-Day, Katherine
A framework for quantitative assessment of impacts related to energy and mineral resource development; 2013; Article; Journal; Natural Resources Research; Haines, Seth S.;Diffendorfer, James;Balistrieri, Laurie S.;Berger, Byron R.;Cook, Troy A.;Gautier, Donald L.;Gallegos, Tanya J.; Gerritsen, Margot; Graffy, Elisabeth; Hawkins, Sarah; Johnson, Kathleen; Macknick, Jordan; McMahon, Peter; Modde, Tim; Pierce, Brenda; Schuenemeyer, John H.; Semmens, Darius; Simon, Benjamin; Taylor, Jason; Walton-Day, Katie

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Year Published: 2013

Megacity megaquakes—Two near misses

Two recent earthquakes left their mark on Santiago de Chile and Tokyo, well beyond the rupture zones, raising questions about the future vulnerability of these and other cities that lie in seismically active regions. Though spared strong shaking, the megacities nevertheless lit up in small quakes, perhaps signaling an abrupt change in the...

Stein, Ross S.; Toda, Shinji
Stein, R.S., Toda S. 2013. Megacity megaquakes: two near misses. Science 341:850-852.

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Year Published: 2013

The PRISM (Pliocene Palaeoclimate) reconstruction: Time for a paradigm shift

Global palaeoclimate reconstructions have been invaluable to our understanding of the causes and effects of climate change, but single-temperature representations of the oceanic mixed layer for data–model comparisons are outdated, and the time for a paradigm shift in marine palaeoclimate reconstruction is overdue. The new paradigm in marine...

Dowsett, Harry J.; Robinson, Marci M.; Stoll, Danielle K.; Foley, Kevin M.; Johnson, Andrew L. A.; Williams, Mark; Riesselman, Christina
Dowsett, H.J., Robinson, M.M., Stoll, D.K., Foley, K.M., Johnson, A.L.A., Williams, M., and Riesselman, C.R., 2013, The PRISM (Pliocene Palaeoclimate) reconstruction: Time for a paradigm shift: Philosophical Transactions of the Royal Society, v. 371, p. 1-24.