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.

2023 | Freshwater | Terrestrial | Planning | Science | Publications & Reports

A resilient and connected network of sites to sustain biodiversity under a changing climate

Mark G. Anderson, Melissa Clark, Arlene P. Olivero, and D. Richard Cameron

In response to biodiversity loss, scientists have called for the protection of well-connected systems of protected areas covering 30 to 50% of the planet. However, as climate change drives shifts in…

2023 | Marine | Science | Publications & Reports

Characterizing state-managed and unmanaged fisheries in coastal marine states and territories of the United States

Michael C. Melnychuk, Charmane E. Ashbrook, Richard J. Bell, Lyall Bellquist, Kate Kauer, Jono R. Wilson, Ray Hilborn, Jay Odell

America’s fisheries provide nearly two million jobs and contribute $117 billion to the national GDP. Although state and territory fisheries account for 40% of the commercial value of U.S. marine…

2023 | Marine | Technology | Science | Publications & Reports

The CALFISH database: A century of California's non-confidential fisheries landings and participation data

Christopher M. Free, Camila Vargas Poulsen, Lyall F. Bellquist, Sophia N. Wassermann, Kiva L. Oken

Commercial and recreational fisheries in California influence a long and dynamic history of coastal economies, cultural heritage, and marine ecosystem health. Fisheries-dependent data sources are…

2023 | Marine | Science | Publications & Reports

Use of management strategy evaluation to understand the value of citizen science in managing an iconic California recreational fishery

Lyall Bellquist, William J. Harford, Frank Hurd, Alexis Jackson, Jeremy D. Prince, Jan Freiwald, Anna Neumann, Jack Likins, Jono Wilson

Conventional fisheries management relies largely on professional sources of scientific data collection, typically from academic or government institutions. Development of community-led data sources…

2023 | Marine | Science | Publications & Reports

Post-release survival and prolonged sublethal effects of capture and barotrauma on deep-dwelling rockfishes (genus Sebastes): implications for fish management and conservation

Nicholas C. Wegner, Elan J. Portner, Drew T. Nguyen, Lyall Bellquist, Andrew P. Nosal, Alena L. Pribyl, Kevin L. Stierhoff, Paul Fischer, Ken Franke, Russell D. Vetter, Philip A. Hastings, Brice X. Semmens, and John R. Hyde

Historical overfishing led to depletion of several groundfish species on the US west coast. Two of these species, Cowcod and Bocaccio, heavily influenced the expansion of groundfish regulations to…

2023 | Marine | Economics | Science | Publications & Reports

Impact of the 2014–2016 marine heatwave on US and Canada West Coast fisheries: Surprises and lessons from key case studies

Christopher M. Free, Sean C. Anderson, Elizabeth A. Hellmers, Barbara A. Muhling, Michael O. Navarro, Kate Richerson, Lauren A. Rogers, William H. Satterthwaite, Andrew R. Thompson, Jenn M. Burt, Steven D. Gaines, Kristin N. Marshall, J. Wilson White, Lyall F. Bellquist

As symptoms of climate change, extreme environmental events (e.g., marine heatwaves) now represent the greatest global threat to the oceans, causing profound ecosystem and socioeconomic impacts. The…

2023 | Marine | Planning | Science | Publications & Reports

U.S. exempted fishing permits: Role, value, and lessons learned for adaptive fisheries management

Lindsay Bonito, Lyall Bellquist, Alexis M. Jackson, Kate Kauer, Mary G. Gleason, Jono Wilson, Stuart Sandin

Experimentation supports adaptive and climate-ready fisheries management in numerous contexts. Exempted Fishing Permits (EFPs) enable fisheries participants, scientists, and managers to…

2023 | Marine | Economics | Science | Publications & Reports

Characterization of a developing recreational deep-drop fishery for swordfish off southern California

Scott A. Aalbers, Michael Wang, Lyall Bellquist, Kate Kauer, Alexis Jackson, Chugey A. Sepulveda

An emerging recreational fishery for swordfish has recently developed in California, outpacing existing fisheries monitoring programs, which prevents accurate estimation of swordfish catch and effort…

2023 | Freshwater | Terrestrial | Planning | Science | Publications & Reports

Nature-Based Solutions for Urban Stormwater Management

Kristina Kreter, Shona Ganguly, Rowan Roderick-Jones, and Kelsey Jessup

New strategies to address urban runoff management with nature-based approaches offer promising solutions to alleviating climate change impacts—like urban heat, water shortages, and…

2023 | Terrestrial | Science | Publications & Reports

Shrub density effects on the presence of an endangered lizard of the Carrizo Plain National Monument, California

Mario Zuliani, Nargol Ghazian, Malory Owen, Michael F. Westphal, H. Scott Butterfield, Christopher J. Lortie

As The Nature Conservancy embarks on restoration planning for its Strategic Restoration Strategy, it needs detailed information on the importance of shrubs to a suite of conservation targets,…

2023 | Freshwater | Microsite

Drought Flows Monitor

Julie Zimmerman, Jennifer Carah, Kirk Klausmeyer, Gabe Rossi, Mia Van Docto, Jeanette Howard, Charlie Schneider, Matt Clifford, Monty Schmitt

Drought conditions are occurring with more frequency, greater severity, and longer duration under climate change. Human water use compounds the effects of drought, further stressing California’s…

2023 | Freshwater | Terrestrial | Planning | Science | Publications & Reports

Expanding the Role of Nature-based Solutions in FEMA’s Hazard Mitigation Assistance Programs: Lessons and Recommendations

The Nature Conservancy, radbridge, Earth Economics

FEMA increasingly recognizes and emphasizes the role of nature-based solutions (NBS) for building community resilience to hazards like flood, wildfire, and drought, and the agency has made remarkable…

2023 | Freshwater | Terrestrial | Marine | Planning | Economics | Publications & Reports

Valuing the Flood Reduction Benefits of Marsh Restoration

Taylor-Burns, R., Heard, S., Beck, M. W.

There is growing evidence for the beneficial role that wetlands can play in reducing flood risk, but in many urban estuaries, coastal development has resulted in dramatic habitat loss and…

2023 | Terrestrial | Planning | Science | Publications & Reports

Cattle Grazing Across The Nature Conservancy in California’s Conservation Estate

Butterfield, H.S., J. Howard, Z. Principe, E. Inlander, S. Sweet, A. Craig, R. Mason, J. Knapp , M. Katkowski

For over 300 years, cattle and sheep have been grazed in California, from the Rancho era continuing to the present day. The Nature Conservancy has a long history in California and across the western…

2023 | Terrestrial | Science | Publications & Reports

Ear mite infection restructures otic microbial networks in conservation–reliant Santa Catalina Island foxes (Urocyon littoralis catalinae)

Jasmine Lu, Emily E. Hamblen, Lara J. Brenner, Julie L. King, Bridgett M. VonHoldt, Alexandra L. DeCandia

Over 50% of federally threatened Santa Catalina Island foxes (Urocyon littoralis catalinae) develop life-threatening ceruminous gland tumors in their ear canals. Previous work suggests that tumors may…

2023 | Terrestrial | Economics | Publications & Reports

Building California’s Forest Resilience Workforce

Sarah Heard, Bradley Franklin

Wildfires in California, and across the western U.S., are increasing in frequency and severity, threatening both ecosystems and communities. Restoration—a combination of ecological thinning and…

2023 | Terrestrial | Science | Publications & Reports

Oren Pollak Memorial Research Fund - 2023 RFP

Brynn Pewtherer

The Oren Pollak Memorial Research Fund was established in 2000 in memory of Dr. Oren Pollak, a leading grassland ecologist and restoration pioneer, as well as an ardent champion and mentor for…

2023 | Freshwater | Terrestrial | Marine | Science | Publications & Reports

Conservation Science Catalyst Fund - 2022 Annual Report

Scott Morrison, Brynn Pewtherer

The Nature Conservancy deploys science to help overcome major challenges facing people and nature. In today’s fast-paced world, turning threats to nature into opportunities for conservation…

2023 | Freshwater | Terrestrial | Technology | Science | Publications & Reports

Floristic patterns and conservation values of Mojave and Sonoran desert springs in California

Naomi S. Fraga, Brian S. Cohen, Andy Zdon, Maura Palacios Mejia, Sophie S. Parker

This paper presents novel botanical inventories of 48 desert springs as part of the Mojave Springs Research Project. The authors assess plant species composition and richness within and between…

2023 | Terrestrial | Marine | Technology | Science | Publications & Reports

Minimizing conservation impacts of net zero energy systems in the western United States

Grace C. Wu, Ryan A. Jones, Emily Leslie, James H. Williams, Andrew Pascale, Erica Brand, Sophie Parker, Brian Cohen, Joseph Fargione, Julia Souder, Maya Batres, Mary G. Gleason, Michael H. Schindel, Charlotte K. Stanley

This paper presents the results of the Power of Place-West project. The authors combined energy modeling with ecosystem and wildlife habitat data to determine the costs and impacts associated with…