Almost half of the world’s human population lives in coastal areas, and associated coastal development has significantly degraded or destroyed many coastal ecosystems. Burgeoning human populations and rising sea levels only further constrain the availability of habitat that coastal species depend on.

California’s 1,100 mile coast has more than 200 threatened, endangered or rare species living in coastal habitats. There are hundreds of coastal estuaries that provide critical rearing habitat for marine species, and are also important for recreation, water filtration, and carbon sequestration.

Only 10 percent of California’s historic coastal wetlands remain. Without intervention, we are at risk of losing 40 percent of our remaining coastal wetlands to sea level rise over the coming decades. Conservancy scientists are working to reverse these trends. 

Freshwater Systems

California is one of the most hydrologically altered landscapes in the world. As water becomes…>>

Groundwater

In a normal year, groundwater accounts for 40 percent of California’s water supply. That…>>

Surface Flows

Californians have fundamentally altered many of the state’s rivers and streams with dams,…>>

Terrestrial Systems

In California, a day’s drive can take a visitor from record-setting desert heat to glaciated…>>

Wildlands

Nearly half of California is protected in some land status that prevents most kinds of intensive…>>

Harvested Landscapes

A third of California is privately-owned forestland, woodland or grassland. From redwood forests on…>>

Cultivated Landscapes

California is the leading agricultural state in the country and it’s agriculture generates…>>

Urban Areas and Infrastructure

With California’s population on track to reach 50 million people, the demand for energy,…>>

Fisheries

Wild capture fisheries supply food and jobs for hundreds of millions of people across the globe. Yet…>>

Coastal Conservation

Almost half of the world’s human population lives in coastal areas, and associated coastal…>>

Science in Action

Terrestrial | Planning | Technology | Economics

Wildfire and Communities

How can land protection and restoration help protect communities from wildfire?

Terrestrial | Marine | Economics | Science

TNC and FEMA

How do we increase climate resilience in ways that work for people and nature?

2016 | Marine | Economics | Science | Publications & Reports

Market and design solutions to the short-term economic impacts of marine reserves

Daniel Ovando, Dawn Dougherty, Jono R. Wilson

No-take marine reserves are a management intervention that can provide long-term fishery benefits. But, impacts of reserve implementation can negatively affect fishermen profits in the short term.…

2016 | Marine | Technology | Science | Video

Sustainable Management of Abalone Fishery in California

The Nature Conservancy, Jono Wilson

California fisheries, like the red abalone fishery, are facing increasing environmental variation and uncertainty due to climate change, complicating the sustainable management of commercial and…

2016 | Freshwater | Science | Publications & Reports

Benefits and Economic Costs of Managed Aquifer Recharge in California

Debra Perrone, Melissa M. Rohde

Managed aquifer recharge (MAR) projects can play an important role in ensuring California manages its groundwater sustainably. This study, the first to investigate the benefits and economic costs…

2016 | Terrestrial | Science | Publications & Reports

A picture is worth a thousand data points: an imagery dataset of paired shrub-open microsites within the Carrizo Plain National Monument

Taylor J. Noble , Christopher J. Lortie , Michael Westphal, H.Scott Butterfield

This paper presents camera trap data comprising over 425,000 images from the Carrizo Plain National Monument. This unique collection of digital images allowed the authors to capture animal behaviours…

2016 | Terrestrial | Science | Publications & Reports

Inconsistent food safety pressures complicate environmental conservation for California produce growers

Patrick Baur, Laura Driscoll, Sasha Gennet, Daniel Karp

Since a deadly outbreak of pathogenic E. coli in California spinach in 2006, produce growers have been pressured to implement on-farm practices, such as native vegetation removal, in the name of food…

2016 | Terrestrial | Technology | Science | Publications & Reports

Integrating technologies for scalable ecology and conservation

David C. Marvin, Lian Pin Koh, Antony J. Lynam, Serge Wich, Andrew B. Davies, Ramesh Krishnamurthy, Emma Stokes, Ruth Starkey, Gregory P. Asner

Integration of multiple technologies greatly increases the spatial and temporal scales over which ecological patterns and processes can be studied, and threats to protected ecosystems can be…

2016 | Terrestrial | Planning | Technology | Science | Publications & Reports

Spatially explicit analysis of field inventories for national forest carbon monitoring

David C. Marvin, Gregory P. Asner

Policies that incentivize forest conservation by monetizing forest carbon ultimately depend on the accuracy of carbon stock estimates. Often, these estimates are based on field inventory sampling. In…

2016 | Freshwater | Terrestrial | Technology | Science | Publications & Reports

Pop-up wetland habitats benefit migrating birds and farmers

Christopher J. McColl, Katie Andrews, Mark Reynolds, Gregory H. Golet

In response to the decline of wetland habitats for migrating and wintering water birds in California, the Conservancy developed a program called BirdReturns that creates “pop-up”…

2016 | Terrestrial | Science | Publications & Reports

Agricultural practices for food safety threaten pest control services for fresh produce

Daniel S. Karp, Rebekah Moses, Sasha Gennet, Matthew S. Jones, Shimat Joseph, Leithen K. M'Gonigle, Lauren C. Ponisio, William E. Snyder, Claire Kremen

Food safety concerns have led to pressure on farmers to simplify their farms and landscapes, rather than diversify them. This study demonstrates that two practices – elimination of…

2016 | Terrestrial | Publications & Reports

Field-scale habitat complexity enhances avian conservation and avian-mediated pest-control services in an intensive agricultural crop

Sara M. Kross, T. Rodd Kelsey, Chris J. McColl, Jason M. Townsend

Globally, loss of biodiversity and impacts to natural services and human health have been driven to a significant degree by loss of natural habitats due to agricultural land conversion and management…

2016 | Terrestrial | Planning | Publications & Reports

Pajaro Compass

A Network for Voluntary Conservation

The Pajaro Compass—with its interactive maps and tools—supports a group of over 50 stakeholders representing conservation, agriculture, transportation, government and community…

2016 | Freshwater | Terrestrial | Planning | Publications & Reports

Future land-use related water demand in California

Tamara S Wilson, Benjamin M Sleeter, D Richard Cameron

This publication discusses how land use changes in Mediterranean California will drive changes in water use between urban uses and annual vs. perennial crops. The authors used a state-and-transition…

2016 | Terrestrial | Science | Publications & Reports

Contemporary Drought and Future Effects of Climate Change on the Endangered Blunt-Nosed Leopard Lizard, Gambelia sila

Michael F. Westphal, Joseph A. E. Stewart, Erin N. Tennant, H. Scott Butterfield, Barry Sinervo

This paper documents the negative effects of the 2012-2014 drought—the most severe multi-year drought in southwestern North America in the past 1,200 years—on the endangered blunt-nosed…

2016 | Marine | Publications & Reports

Marine and Coastal Impacts of Ocean Desalination in California

Szeptycki, L., E. Hartge, N. Ajami, A. Erickson, W. N. Heady, L. LaFeir, B. Meister, L. Verdone, J.R. Koseff

The drought in California rekindled interest in ocean desalination as a new and reliable water supply option; yet desalination is expensive, energy intensive, potentially emits greenhouse gases,…

2016 | Terrestrial | Science | Publications & Reports

Adaptive divergence despite strong genetic drift: genomic analysis of the evolutionary mechanisms causing genetic differentiation in the island fox

Funk, W.C., R.E. Lovich, P.A. Hohenlohe, C.A. Hofman, S.A. Morrison, T.S. Sillett, C.K. Ghalambor, J.E. Maldonado, T.C. Rick, M.D. Day, T.J. Coonan, K.R. Crooks, A. Dillon, D.K. Garcelon, J.L. King, L.M. Lyren, E.E. Boydston, N. Gould , W.F. Andelt

The genomics revolution provides powerful tools for understanding evolution and advancing conservation. This study applies genomics techniques to examine the evolutionary mechanisms underpinning…