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.
William T. Bean, H. Scott Butterfield, Jeanette K. Howard, Thomas J. Batter
In this paper, the authors used a variety of habitat suitability modeling approaches to begin to understand where pronghorn may exist in the future in California under different climate change scenarios. This work directly informs The Nature Conservancy's Water for Wildlife projects in and around…
Nicholas A. Povak, Patricia N. Manley, Kristen N. Wilson
This study presents a methodology to integrate spatial assessments of current and future forest conditions to understand the potential to achieve desired conditions under climate change with ongoing disturbances. The output is a strategic (where to go) and tactical (what to do) map to improve…
Claire L. Schollaert, Jihoon Jung, Joseph Wilkins, Ernesto Alvarado, Jill Baumgartner, Julien Brun, Tania Busch Isaksen, Jamie M. Lydersen, Miriam E. Marlier, Julian D. Marshall, Yuta J. Masuda, Charles Maxwell, Christopher W. Tessum, Kristen N. Wilson, Nicholas H. Wolff, June T. Spector
By modeling six scenarios of forest management, wildfire, and health impacts from smoke from 1981-2020, we found that moderate amounts of prescribed fire can decrease harmful particulate matter exposure and reduce asthma related hospitalizations and emergency department visits. This case study from the Tahoe Central…
William T. Bean, H. Scott Butterfield, Craig Fiehler, David Hacker, Jeanette K. Howard, Russell Namitz, Brandon Swanson, Thomas J. Batter
TNC launched a Water for Wildlife project motivated by understanding the importance of standing free water across the season for wildlife in general, but most importantly for those species sensitive to water availability during times of the year when water is typically limiting in California,…
Trish Smith, Cheryl Brehme, Jill Carpenter, Nancy Frost, Megan Jennings, Barbara Kus, Scott Quinnell, Spring Strahm, T. Winston Vickers
The Nature Conservancy and the California Department of Transportation are planning 3 wildlife crossing infrastructure projects along a 3-mile stretch of Interstate 15 (I-15) in the Santa Ana-Palomar Mountains Linkage in southern California. While wildlife crossings are becoming more common, optimal designs that meet the…
Benjamin P. Bryant, Tessa Maurer, Phillip C. Saksa, John D. Herman, Kristen N. Wilson, Edward Smith
The authors of this study analyzed how wildfires and forest restoration, specifically thinning and prescribed fire being implemented in the French Meadows Project in the central Sierra Nevada, could impact streamflow, hydropower generation, and ecological flows for a threatened frog (Foothill yellow legged frogs). By…
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 species, conservation plans based on current biodiversity patterns will become less effective. The authors…
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 collaboratively test new fishing regulations and/or gear types that might advance fishery sustainability, although no evaluation of federal EFP performance had ever been conducted.…
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 floods—and environmental pollution and the loss of natural green space that diminish the quality of life for vulnerable communities. Vegetated…
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 progress on policies and resources to support NBS in a relatively short period. However, anecdotally it remains…
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 fragmentation. In the past several decades, marsh restoration has emerged as a core management objective…
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 United States in using cattle grazing for conservation purposes. In California…
The Nature Conservancy
A 2022 report, Learning to Live with Fire in Forest Communities, highlights the science and benefits of fire-resilient community design. TNC partnered with key stakeholders in the Paradise community to demonstrate how redirecting development and urban growth in the Wildland-Urban Interface (WUI), in tandem with nature-based fire buffers…
The Nature Conservancy, FEMA, Nonlinear Ventures, radbridge, Earth Economics
To address the increasing risk of catastrophic flooding, wildfire and other climate-related threats, communities are pursuing nature-based solutions (NBS) and seeking FEMA hazard mitigation funds to support this work. Of all the required activities, the Environmental & Historic Preservation (EHP) review is often cited as…
Elliot Hall, Bryan DeAngelis
Oyster reefs are one of the most imperiled habitats on earth. However, current rates of restoration are too slow. We must radically increase the pace, scale, and impact of restoration to recover the abundance, resilience and benefits of these invaluable coastal ecosystems. Fortunately, incredible transformations…
Patricia N. Manley, Nicholas A. Povak, Kristen Wilson, Kristen Wilson, Mary Lou Fairweather, Vivian Griffey
The Blueprint is a set of strategy maps that identify opportunities for forest protection and adaptation across a 2.4-million-acre region of the central Sierra Nevada. It uses a novel application of the Ecosystem Management Decision Support (EMDS) tool to evaluate spatial data layers against target…
The Nature Conservancy, Earth Economics
FEMA requires that hazard mitigation projects must be cost-effective to the federal government, as demonstrated in a Benefit-Cost Analysis (BCA), which compares the present value of a project’s future benefits and costs. A BCA is required for the vast majority of FEMA-funded hazard mitigation projects,…
Heather Tallis, Joe Fargione, Edward Game, Rob McDonald, Leandro Baumgarten, Nirmal Bhagabati, Rane Cortez, Bronson Griscom, Jonathan Higgins, Christina M. Kennedy, Joe Kiesecker, Timm Kroeger, Trina Leberer, Jennifer McGowan, Lisa Mandle, Yuta J. Masuda, Scott Morrison, Sally Palmer, Rebecca Shirer, Priya Shyamsundar, Nicholas H.Wolff, and Hugh P. Possingham
Spatial analysis is a powerful tool in conservation planning. Yet it is often under-deployed as a means of elucidating which conservation actions may deliver the highest return on investment. This paper presents a framework for “spatial action mapping” and discusses how it can improve conservation…
James A. Fitzsimons, Simon Branigan, Chris L. Gillies, Robert D. Brumbaugh, Jun Cheng, Bryan M. DeAngelis, Laura Geselbracht, Boze Hancock, Andrew Jeffs, Tein McDonald, Ian M.McLeod, Bernadette Pogoda, Seth J. Theuerkauf, Marine Thomas, Stephanie Westby, Philine S.E. zu Ermgassen
Widespread global declines in shellfish reefs have led to growing interest in their restoration and protection. With restoration projects now occurring on four continents and in at least seven countries, this project developed global restoration guidelines for these ecosystems, developed based on experience over the…
