Wolf CA, Young HS, Zilliacus KM, Wegmann AS, McKown M, Holmes ND, Tershy BR, Dirzo R, Kropidlowski S, Croll DA
Prior to eradication in 2011, non-native invasive rats were known to be active seed predators on Palmyra Atoll, Central Pacific Ocean. This paper reports on native and non-native tree and palm seedling abundance before and after eradication, with seedling recruitment increasing for five of the six native trees species, particularly Pisonia grandis, a regionally important species. Recruitment of the naturalized coconut palm also increased, indicating future management intervention will be required. These results emphasize the strong effects that a rat eradication can have on tree recruitment, with expected long-term effects on canopy composition, habitat and ecosystem function. View press release here.
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 grassland ecology students. As The Nature Conservancy’s lead ecologist in California in the…
Samuel C. Zipper, Jennifer K. Carah, Christopher Dillis, Tom Gleeson, Ben Kerr, Melissa M. Rohde, Jeanette K. Howard, Julie K.H. Zimmerman
Using a newly developed tool for estimating streamflow depletion from groundwater pumping, this study examined the impacts of ongoing groundwater pumping on streamflow and aquatic ecosystems in the Navarro watershed in rural, coastal California. The study found that common uses of groundwater in the watershed,…
Stephanie Dashiell, Mark Buckley, Dustin Mulvaney
In an effort to address climate change, California enacted a clean energy energy standard that is driving a market for significant amounts of renewable energy. To explore the economic benefits of developing utility-scale solar energy on low biodiversity value land, the authors conducted an analysis…
Melissa M. Rohde, Sara B. Sweet, Craig Ulrich, Jeanette Howard
Groundwater plays an essential role in supporting freshwater species, riparian habitats, and migratory birds. These ecological communities, commonly referred to as groundwater-dependent ecosystems (GDEs), can suffer undesirable impacts from unsustainable pumping practices. This study assessed whether ecosystem health varied with groundwater availability in riparian forests in California’s…
Annalise Taylor, Tanushree Biswas, John M. Randall, Kirk Klausmeyer, Brian Cohen
In Western North America, droughts are expected to increase in frequency and intensity as the region’s climate changes. Over past decades, land managers on Santa Cruz Island, California witnessed mass mortality of conifer forest dominated by bishop pine (Pinus muricata). These pines play a key role within…
Sophie S. Parker, W. Stanley Harpole, Eric W. Seabloom
This paper furthers our understanding of what makes some species rare, and others more common. The authors grew monocultures of 18 California grassland plant species and measured their growth and ability to alter soil properties such as moisture and nutrients. Then they related these metrics…
Gorm E. Shackelford, Rodd Kelsey, William J. Sutherland, Christina M. Kennedy, Stephen A. Wood, Sasha Gennet, Daniel S. Karp, Claire Kremen, Nathaniel E. Seavy, Julie A. Jedlicka, Kelly Gravuer, Sara M. Kross, Deborah A. Bossio, Andrés Muñoz-Sáez, Deirdre G. LaHue, Kelly Garbach, Lawrence D. Ford, Mark Felice, Mark D. Reynolds, Devii R. Rao, Kathleen Boomer, Gretchen LeBuhn, Lynn V. Dicks
Agricultural management practices impacts not only on crops and livestock, but also soil health, water quality, wildlife, and ecosystem services. There is abundant, but disconnected, scientific evidence for the impacts of different practice. But this evidence is often not used in decision making by farmers or…
Heather Tallis, Katharine Kreis, Lydia Olander, Claudia Ringler, David Ameyaw, Mark E Borsuk, Diana Fletschner, Edward Game,, Daniel O Gilligan, Marc Jeuland, Gina Kennedy, Yuta J Masuda, Sumi Mehta, Nicholas Miller, Megan Parker, Carmel Pollino, Julie Rajaratnam, David Wilkie, Wei Zhang, Selena Ahmed, Oluyede C Ajayi, Harold Alderman, George Arhonditsis, Ines Azevedo, Ruchi Badola, Rob Bailis, Patricia Balvanera, Emily Barbour, Mark Bardini, David N Barton, Jill Baumgartner, Tim G Benton, Emily Bobrow, Deborah Bossio, Ann Bostrom, Ademola Braimoh, Eduardo Brondizio, Joe Brown, Benjamin P Bryant, Ryan SD Calder, Becky Chaplin-Kramer, Alison Cullen, Nicole DeMello, Katherine L Dickinson, Kristie L Ebi, Heather E Eves, Jessica Fanzo, Paul J Ferraro, Brendan Fisher, Edward A Frongillo, Gillian Galford, Dennis Garrity, Lydiah Gatere, Andrew P Grieshop, Nicola J Grigg, Craig Groves, Mary Kay Gugerty, Michael Hamm, Xiaoyue Hou, Cindy Huang, Marc Imhoff, Darby Jack, Andrew D Jones, Rodd Kelsey, Monica Kothari, Ritesh Kumar, Carl Lachat, Ashley Larsen, Mark Lawrence, Fabrice DeClerck, Phillip S Levin, Edward Mabaya, Jacqueline MacDonald Gibson, Robert I McDonald, Georgina Mace, Ricardo Maertens, Dorothy I Mangale, Robin Martino, Sara Mason, Lyla Mehta, Ruth Meinzen-Dick, Barbara Merz, Siwa Msangi, Grant Murray, Kris A Murray, Celeste E Naude, Nathaniel K Newlands, Ephraim Nkonya, Amber Peterman, Tricia Petruney, Hugh Possingham, Jyotsna Puri, Roseline Remans, Lisa Remlinger, Taylor H Ricketts, Bedilu Reta, Brian E Robinson, Dilys Roe, Joshua Rosenthal, Guofeng Shen, Drew Shindell, Ben Stewart-Koster, Terry Sunderland, William J Sutherland, Josh Tewksbury, Heather Wasser, Stephanie Wear, Chris Webb, Dale Whittington, Marit Wilkerson, Heidi Wittmer, Benjamin DK Wood, Stephen Wood,, Joyce Wu, Gautam Yadama and Stephanie Zobrist
Although environmental conservation, human health, and sustainable development challenges are interconnected, approaches to these challenges and the evidence used remain disconnected. Creating integrated solutions across these sectors will require better alignment of the methods used to assess the problems and quantifying success. In this review,…
We have an opportunity to apply the principles of economics and finance to demonstrate the value of conservation and create systems that incentivize the protection of nature at scale. In a changing climate, natural landscapes are extremely valuable for the benefits they provide to both…
Sean P. Fitzgerald , Hunter S. Lenihan, Jono R. Wilson, Carolynn S. Culver, Matthew Potoski
This paper highlights the benefits of collaborative fisheries research in the management of wild capture fisheries. The authors teamed up with commercial fishermen in the southern California rock crab fishery and sampled over 45,000 crabs over a two-year period. Using statistical techniques, they compared these data to a study…
Gorm E. Shackelford, Rodd Kelsey, Lynn V. Dicks
As California and other major agricultural regions around the world tackle the challenge of increasing the sustainability of agriculture to improve environmental health, cover crops are increasingly viewed as an important practice to protect soils and contribute to climate change mitigation. In this analysis, the authors…
Hekia Bodwitch, Jennifer Carah, Kent M. Daane, Christy Getz, Theodore E. Grantham, Gordon M. Hickey, Houston Wilson
Cannabis has been an industry in the shadows for many decades and little studied. In partnership with U.C. Berkeley and U.C. Cooperative Extension, Conservancy staff developed the first cannabis growers survey on cultivation practices in California, and also asked questions about grower’s experiences with the…
Houston Wilson, Hekia Bodwitch, Jennifer Carah, Kent Daane, Christy Getz, Theodore E. Grantham, Van Butsic
Cannabis has been an industry in the shadows for many decades and little studied. In partnership with U.C. Berkeley and U.C. Cooperative Extension, the Conservancy staff developed the first cannabis growers survey on cultivation practices in California. The goal of the survey was to understand…
Laura S. Brophy, Correigh M. Greene, Van C. Hare, Brett Holycross, Andy Lanier, Walter N. Heady, Kevin O’Connor, Hiroo Imaki, Tanya Haddad, Randy Dana
The authors of this study generated new maps of current and historical tidal wetlands in 450 estuaries throughout Washington, Oregon, and California. Using laser-mapping technology known as LIDAR combined with water elevation models, the team estimated that West Coast estuaries historically covered nearly 2 million acres.…
Sandi Matsumoto, Melissa M. Rohde, Sarah Heard
Groundwater is a critical water supply around the world and is increasingly under threat from pumping that exceeds natural replenishment. Successful implementation of California's Sustainable Groundwater Management Act (SGMA) depends local agencies working with stakeholders to develop plans and implement projects that reduce groundwater use,…
Rohde MM, Seapy B, Rogers R, Castañeda X, editors
Plant and animal species can rely on groundwater directly or indirectly for water, nutrients, and stable temperatures. The Critical Species LookBook is a compendium of 84 state and federally listed species likely to rely on groundwater in California. This document provides groundwater-relevant information for each…
Samuel C. Zipper, Tom Gleeson, Ben Kerr, Jeanette K. Howard, Melissa M. Rohde, Jennifer Carah, Julie Zimmerman
Reductions in streamflow from groundwater pumping can negatively impact water users and aquatic ecosystems but are challenging to estimate due to the time and expertise required to develop numerical models often used in water management. This paper develops a new approach – a combination of…
