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Conservation and management of ecological systems in a changing California

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Abstract

Climate change in California is altering habitat conditions for many species and exacerbating stress from other factors such as alien invasive species, pollution, and habitat fragmentation. However, the current legal and planning framework for species protection does not explicitly take climate change into account. The regulatory framework is primarily reactive, kicking in only after species’ health is gravely threatened. Neither federal nor state regulations require forward-looking, climate-sensitive species or ecosystem protection plans. Habitat planning is poorly funded and often piecemeal. In this context, the wrong lands may be protected, with development allowed to occur in areas that would be most beneficial for species conservation in the future. A more forward-looking approach to habitat conservation is needed, one based on a statewide strategy to identify and protect critical habitat areas, including corridors to enable species migration. The approach would also require development of assessment indicators and assistance strategies not dependent on current habitat structure, and a governance structure to implement regular, periodic updates of management plans in relation to agreed-upon performance indicators. Such a strategy should integrate habitat conservation planning with other state and regional plans and objectives, such as for transportation infrastructure, urban development, and mitigation of climate change.

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Notes

  1. Spawning by the delta smelt occurs within a limited temperature range, with larvae intolerant of water above 20°C. Lower recruitment tends to occur in warmer years, because the number of days suitable for spawning is reduced.

  2. The definition of “take” differs in CESA and ESA. ESA regulations define take to include “harm,” which refers among other things to “significant habitat modification or degradation” that results in death or injury to wildlife. The CESA definition of take includes no such explicit reference to habitat modification, and in general, the California definition of take includes only acts that cause the death of a protected species. The Department of Fish and Game has applied CESA in such a way that habitat removal is prohibited if it is the proximate cause of death. However, in some cases, habitat modification may be considered take under the federal ESA, but not under the California ESA (Cylinder et al. 2004; Manthripragada 2006).

  3. Although not explicitly required by CESA, inter-agency consultation for actions that affect threatened and endangered species is required under the California Environmental Quality Act (CEQA). However, CEQA’s stipulations for requiring mitigation are not as stiff as CESA’s (Manthripragada 2006).

  4. In California, 134 HCPs have been approved and appear in the U.S. Fish and Wildlife Service (2010a) Conservation Plans and Agreements Database, Region 8. Many cover a single species for a short term (5 to 10 years), but many are large-scale multi-species regional HCPs.

  5. NCCP plans are developed cooperatively by federal and state agencies, local governments, and private sector and non-profit stakeholders. There are 24 active, in-progress NCCPs (many of them HCPs as well) covering nearly 10 million acres; 8 have been approved and permitted (California Department of Fish and Game NCCP website, as of June 1, 2010).

  6. DFG has approved 52 conservation mitigation “banks” statewide, allowing for tradable offset credits, most for wetlands projects (California Department of Fish and Game 2010). DFG also oversees various incentive programs to promote conservation on private lands; about 43% of DFG-administered land is managed through easements, leases or other agreements with landowners (California Department of Fish and Game 2009).

  7. The required conservation component of local “general plans” for community development often has been minimal, and adopted measures often have not been implemented. At the project level, environmental review has suffered from lack of capacity for evaluating cumulative impacts of individual projects (Bunn et al. 2007; Hopkins 2004).

  8. The Global Warming Solutions Act (AB 32, Nunez) calls for reducing greenhouse gas emissions to 1990 levels by 2020. In addition, Governor Schwarzenegger signed an executive order (S-3-05) on June 1, 2005, calling for even larger reductions by 2050, to 80% below 1990 levels.

  9. Six different sub-county NCCPs are being developed within San Diego County. Three have been adopted and are being implemented.

  10. According to DFG’s Lands and Facilities Branch, annual land operation management costs for many wildlife areas range from $16 to $100 per acre, with local agencies estimating these costs to be significantly higher. In 2005, the average level of support for DFG’s wildlife areas and ecological reserves was $13 per acre, with one staff person per 10,000 acres (Bunn et al. 2007).

  11. See http://www.climateregistry.org/PROTOCOLS/FP/. The forestry protocols require that pertinent carbon reductions must be in addition to what would have occurred in the absence of a carbon market, and that qualifying projects commit to best management practices, to maintaining and promoting native forest types, and to supporting natural forest management (California Air Resources Board 2007). Qualifying projects must be secured with a permanent conservation easement to a qualified third party, a conservation not-for-profit organization, or a state or local government entity.

  12. NCCP plans must be reviewed by independent scientists, although only as an initial input into plan development and approval. Reserves are required to be large-scale and to provide for diverse landscape gradients and corridor linkages within and beyond their boundaries—design elements all likely to aid species transitions. NCCPs must conserve the ecological integrity of large habitat blocks, ecosystem functions, and biological diversity—although these terms have not been defined in statute. Adaptive management programs must be implemented to “use the results of new information gathered through the monitoring program of the plan and from other sources to adjust management strategies and practices” (California Fish and Game Code § 2805).

  13. The Essential Habitat Connectivity Project was mandated through passage of Assembly Bill 2785 (Ruskin) in 2008. That statute mandated the Department of Fish and Game to identify and compile a database of California’s most critical areas for maintaining habitat connectivity, including wildlife corridors and habitat linkages.

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Acknowledgments

The authors thank the following individuals for discussing issues related to climate adaptation and conservation planning with us either in person or by telephone: Michael Beck, Vicki Campbell, Jim Dempsey, Holly Doremus, Rob Klinger, Robert Leiter, Amy Luers, Connie Millar, Reed Noss, Gail Presley, Steve Ritchie, Brad Samuelson, Rebecca Shaw, Dan Silver, Wayne Spencer, Gregory A. Thomas, and David Zippin. We also thank Ellen Hanak, Louise Bedsworth, Rebecca Shaw, Michael Teitz, and anonymous reviewers for helpful comments, Lynette Ubois for editorial guidance, and Sarah Swanbeck for her assistance with figures. This research was supported by the Public Policy Institute of California, The Nature Conservancy, Next Ten Foundation, and Pacific Gas and Electric Company.

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Barbour, E., Kueppers, L.M. Conservation and management of ecological systems in a changing California. Climatic Change 111, 135–163 (2012). https://doi.org/10.1007/s10584-011-0246-y

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