A General Framework for Setting Quantitative Population Objectives for Wildlife Conservation

Dybala, Kristen E.; Clipperton, Neil; Gardali, Thomas; Golet, Gregory H.; Kelsey, Rodd; Lorenzato, Stefan; Melcer, Ronald; Seavy, Nathaniel E.; Silveira, Joseph G.; Yarris, Gregory S.

doi:10.15447/sfews.2017v15iss1art8

Cited by 5 publications

(5 citation statements)

References 51 publications

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“…For some major bird groups, quantitative conservation objectives have not yet been defined. Thus, although the bird conservation objectives described here will likely require updating as new information becomes available, they still provide a sense of the magnitude of the conservation challenge at hand (Dybala et al 2017c). These objectives can be readily incorporated into conservation planning and restoration goals in the Delta, and existing restoration projects can make important contributions toward meeting these objectives.…”

Section: Additional At-risk Species and Habitat Needsmentioning

confidence: 99%

Getting Our Heads Above Water: Integrating Bird Conservation in Planning, Science, and Restoration for a More Resilient Sacramento–San Joaquin Delta

Dybala

Gardali

Melcer

2020

SFEWS

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The Sacramento–San Joaquin Delta is an important region for bird conservation in California, particularly as part of a large, productive estuary on the Pacific Flyway. The Delta currently provides habitat to an abundant, diverse community of birds, but it is likely only a small fraction of what the Delta’s bird community once was. Meeting the goal of restoring a healthy Delta ecosystem is legislatively required to include providing habitat for birds among the conservation goals and strategies in the Delta Plan, yet birds and their habitat needs are often not addressed in science syntheses, conservation planning, and large-scale restoration initiatives in the Delta. In this essay, the authors provide an avian perspective on the Delta, synthesizing recent scientific work to describe factors that contribute to the Delta’s current importance for birds, and the conservation needs of the diverse array of bird species that call the Delta home.

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Section: Additional At-risk Species and Habitat Needsmentioning

confidence: 99%

Getting Our Heads Above Water: Integrating Bird Conservation in Planning, Science, and Restoration for a More Resilient Sacramento–San Joaquin Delta

Dybala

Gardali

Melcer

2020

SFEWS

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“…The long-term population objectives are based on general hypotheses for the orders of magnitude required to achieve genetically robust, self-sustaining, and resilient populations (Dybala et al 2017, this volume; Table 2). They are based on principles of conservation biology and are derived from the best available data, but may require revision if new species-or population-specific information becomes available ( Figure 1E).…”

Section: March 2017mentioning

confidence: 99%

Population and Habitat Objectives for Avian Conservation in California’s Central Valley Riparian Ecosystems

Dybala¹,

Clipperton²,

Gardali³

et al. 2017

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Riparian ecosystems provide important ecosystem services and recreational opportunities for people, and habitat for wildlife. In California's Central Valley, government agencies and private organizations are working together to protect and restore riparian ecosystems, and the Central Valley Joint Venture provides leadership in the formulation of goals and objectives for avian conservation in riparian ecosystems. We defined a long-term conservation goal as the establishment of riparian ecosystems that provide sufficient habitat to support genetically robust, self-sustaining, and resilient bird populations. To achieve this goal, we selected a suite of 12 breeding riparian landbird focal species as indicators of the state of riparian ecosystems in each of four major Central Valley planning regions. Using recent bird survey data, we estimated that over half of the regional focal species populations are currently small (< 10,000) and may be vulnerable to extirpation, and two species have steeply declining population trends. For each focal species in each region, we defined long-term (100-year) population objectives that are intended to be conservation endpoints that we expect to meet the goal of genetically robust, self-sustaining, and resilient populations. We then estimated the long-term species density and riparian restoration objectives required to achieve the longterm population objectives. To track progress toward the long-term objectives, we propose short-term (10-year) objectives, including the addition of 12,919 ha (31,923 ac) of riparian vegetation in the Central Valley (by planning region: 3,390 ha in Sacramento, 2,390 ha in Yolo-Delta, 3,386 ha in San Joaquin, and 3,753 ha in Tulare). We expect that reaching these population, density, and habitat objectives through threat abatement, habitat restoration, and habitat enhancement will result in improvements to riparian ecosystem function and resilience that will benefit other wildlife populations and the people of the Central Valley and beyond.

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“…In addition, two modifiers indicate populations that are "steeply declining" or "resilient." Steeply declining populations are at high risk of extirpation or extinction regardless of population size, whereas resilient populations have multiple self-sustaining sub-populations in the planning area to guard against environmental catastrophes in one part of the range (see Dybala et al 2017, this volume, for more information). We applied this framework to each focal species population in each focus area, and we…”

Section: Central Valley Grassland and Oak Savannah Ecosystemsmentioning

confidence: 99%

Population and Habitat Objectives for Avian Conservation in California’s Central Valley Grassland–Oak Savannah Ecosystems

DiGaudio¹,

Dybala²,

Seavy³

et al. 2017

SFEWS

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A General Framework for Setting Quantitative Population Objectives for Wildlife Conservation

Cited by 5 publications

References 51 publications

Getting Our Heads Above Water: Integrating Bird Conservation in Planning, Science, and Restoration for a More Resilient Sacramento–San Joaquin Delta

Getting Our Heads Above Water: Integrating Bird Conservation in Planning, Science, and Restoration for a More Resilient Sacramento–San Joaquin Delta

Population and Habitat Objectives for Avian Conservation in California’s Central Valley Riparian Ecosystems

Population and Habitat Objectives for Avian Conservation in California’s Central Valley Grassland–Oak Savannah Ecosystems

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