Products

We identify issues and uncertainties that pose obstacles to conservation and then—in collaboration with internal and external colleagues—develop science products that help overcome those obstacles.

2016 | Terrestrial | Science | Publications & Reports

Historic and Recent Winter Sandhill Crane Distribution in California

Gary L. Ivey, Caroline P. Herziger, David A. Hardt, Gregory H. Golet

Understanding the geographic distribution and long-term dynamics of Sandhill Crane (Grus canadensis) foraging areas and night roost sites is fundamental to their conservation and management. The…

2015 | Terrestrial | Publications & Reports

The Unintended Ecological and Social Impacts of Food Safety Regulations in California's Central Coast Region

Daniel S. Karp, Patrick Baur, Edward R. Atwill, Kathryn De Master, Sasha Gennet, Alastair Iles, Joanna L. Nelson, Amber R. Sciligo, Claire Kremen

In 2006, an E. coli outbreak linked to spinach grown in California’s Central Coast region catalyzed reforms in vegetable production. Without evidence, wildlife was targeted as a disease vector…

2015 | Terrestrial | Planning | Publications & Reports

Conservation Planning for Offsetting the Impacts of Development: A Case Study of Biodiversity and Renewable Energy in the Mojave Desert

Jason Kreitler, Carrie A. Schloss, Oliver Soong, Lee Hannah, Frank W. Davis

In the past, mitigation to address impacts from development have lacked a regional planning perspective resulting in efficient design across a set of sites for a suite of impacts. This paper…

2015 | Freshwater | Terrestrial | Publications & Reports

The benefits of crops and field management practices to wintering waterbirds in the Sacramento-San Joaquin River Delta of California

W. David Shuford , Matthew E. Reiter, Khara M. Strum, Michelle M. Gilbert , Catherine M. Hickey, Greg Golet

Although agricultural intensification is one of the largest contributors to the loss of global biodiversity, agricultural landscapes can provide valuable habitat for birds. Recognizing this, wildlife…

2015 | Freshwater | Terrestrial | Technology | Publications & Reports

Abundance models improve spatial and temporal prioritization of conservation resources

Johnston, A., D. Fink, M. D. Reynolds, W. M. Hochachka, B. L. Sullivan, N. E. Bruns, E. Hallstein, M. S. Merrifield, S. Matsumoto, S. Kelling

Global declines in migratory species in response to accelerating habitat destruction and climate change challenge the scope and scale of conservation efforts. The ability to pinpoint where and when…

2015 | Terrestrial | Science | Publications & Reports

Testing the effects of ant invasions on non-ant arthropods with high-resolution taxonomic data

Cause Hanna, Ida Naughton, Christina Boser, David Holway

Ecological invasions can shift species composition and even alter ecosystem function. Ant invasions generate a broad spectrum of ecological effects but there is controversy about the extent of these…

2015 | Terrestrial | Publications & Reports

Comanaging fresh produce for nature conservation and food safety

Daniel S. Karp, Sasha Gennet , Christopher Kilonzo, Melissa Partyka, Nicolas Chaumont, Edward R. Atwill, Claire Kremen

In 2006, a high profile outbreak of E. coli in spinach was traced to California’s Central Coast. After that outbreak, produce growers were pressured to minimize potential presence of wild…

2015 | Terrestrial | Publications & Reports

Carbon Implications of Fuel Reduction and Ecological Restoration Treatments in Sierra Nevada Forests

Derek Young

A century of fire suppression has dramatically altered the structure and composition of western U.S. forests. When dense, fire-suppressed forests experience wildfire, they often burn severely. To…

2015 | Terrestrial | Science | Publications & Reports

Survival and mortality of pumas (Puma concolor) in a fragmented, urbanizing landscape

Vickers, T.W., J. N. Sanchez, C. Johnson, S.A. Morrison, R. Botta, T. Smith, B.S. Cohen, P. Huber, W.M. Boyce

Conservation of wide-ranging species like mountain lions is especially difficult in highly fragmented landscapes, such as coastal southern California. Research into their populations can provide…

2015 | Terrestrial | Publications & Reports

High Time for Conservation: Adding the Environment to the Debate on Marijuana Liberalization

Jennifer K. Carah, Jeanette K. Howard, Sally E. Thompson, Anne G. Short Gianotti, Scott D. Bauer, Stephanie M. Carlson, David N. Dralle, Mourad W. Gabriel, Lisa L. Hulette, Brian J. Johnson, Curtis A. Knight, Sarah J. Kupferberg, Stefanie L. Martin, Rosamond L. Naylor, Mary E. Power

Marijuana cultivation can have significant negative collateral effects on the environment that are often unknown or overlooked. This study focuses on California, where by some estimates, 60–70%…

2015 | Terrestrial | Planning | Economics | Science | Publications & Reports

Integrating Land Conservation and Renewable Energy Goals in California: A Study of Costs and Impacts Using the Optimal Renewable Energy Build-Out (ORB) Model

The Nature Conservancy: Erica Brand, Laura Crane, Dick Cameron, Energy and Environmental Economics: Grace C. Wu, Nick Schlag

Integrating ecological data into long-term energy planning is critical to meet both California’s long term energy and conservation goals. This report assesses the potential trade-offs associated…

2015 | Terrestrial | Planning | Publications & Reports

Case studies of conservation plans that incorporate geodiversity

M.G. Anderson, P.J. Comer, P. Beier, J.J. Lawler, C.A. Schloss, S. Buttrick, C. M. Albano, D. P. Faith

Incorporating geodiversity into conservation plans to ensure conservation actions are more resilient to climate change is appealing because it addresses the threat of climate change while avoiding the…

2015 | Terrestrial | Planning | Publications & Reports

Incorporating geodiversity into conservation decisions

Patrick J. Comer, Robert L. Pressey, Malcolm L. Hunter Jr., Carrie A. Schloss, Steven C. Buttrick, Nicole E. Heller, John M. Tirpak, Daniel P. Faith, Molly S. Cross, Mark L. Shaffer

The protection of biodiversity in a changing climate is a key challenge for conservation planners. Conserving a diversity of geophysical settings makes species and systems more resilient to climate…

2015 | Terrestrial | Planning | Publications & Reports

Land-use impacts on water resources and protected areas: applications of state-and-transition simulation modeling of future scenarios

Tamara S. Wilson, Jason Sherba, Dick Cameron, Benjamin M Sleeter

Human land use will increasingly contribute to habitat loss and water shortages in California, given future population projections and associated land-use demand. Understanding how land-use change may…

2015 | Terrestrial | Planning | Publications & Reports

Monitoring the Impact of Grazing on Rangeland Conservation Easements Using MODIS Vegetation Indices

Miriam Tsalyuk, Maggi Kelly, Kevin Koy, Wayne M. Getz, H. Scott Butterfield

Monitoring the effects of grazing on rangelands is crucial for ensuring sustainable rangeland ecosystem function and maintaining conservation values. Residual dry matter (RDM), the dry grass…

2015 | Terrestrial | Science | Publications & Reports

Islands within an island: Repeated adaptive divergence in a single population

Langin, K.M., T.S. Sillett , W.C. Funk, S.A. Morrison, M.A. Desrosiers, C.K. Ghalambor

Islands are renowned laboratories for discovery into natural selection. This study looked at “islands” of habitat within a single island and remarkably found that the Island Scrub-Jay…

2015 | Terrestrial | Science | Publications & Reports

Mitochondrial genomes suggest rapid evolution of dwarf California Channel Islands foxes (Urocyon littoralis)

Hofman, C.A., T. C. Rick, M. T. R. Hawkins, W. C. Funk, K. Ralls, C. L. Boser, P. W. Collins, T. J. Coonan, J. L. King, S.A. Morrison, S. D. Newsome, T. S. Sillett, R. C. Fleischer, J. E. Maldonado

Genomics techniques provide powerful means of understanding evolutionary history. This paper examines the evolution of the island fox, which occurs on six of the California Channel Islands. Insights…