Proactive Conservation Management of an Island-endemic Bird Species in the Face of Global Change

Morrison, Scott; Sillett, T. Scott; Ghalambor, Cameron K.; Fitzpatrick, John W.; Graber, David M.; Bakker, Victoria J.; Bowman, Reed; Collins, Charles T.; Collins, Paul W.; Delaney, Kathleen Semple; Doak, Daniel F.; Koenig, Walter D.; Laughrin, Lyndal; Lieberman, Alan; Marzluff, John M.; Reynolds, Mark; Scott, James M.; Stallcup, Jerre Ann; Vickers, T. Winston; Boyce, Walter M.

doi:10.1525/bio.2011.61.12.11

Cited by 37 publications

(42 citation statements)

References 28 publications

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“…Their evolutionary history within the context of depauperate communities has also played a role in making them more susceptible to the introduction of new species-whether competitors, predators, or pathogens (Blondel 2000). These factors amplify the effects of anthropogenic stressors like habitat loss, invasive species, and climate change; and these effects in turn have necessitated the implementation of many intensive management programs on islands around the world (Wood 2000, Goldman et al 2008, Gonzalez et al 2008, Cruz et al 2009, Morrison et al 2011.…”

mentioning

confidence: 99%

Genetic Diversity of the Japanese Wood Pigeon,Columba janthina, Endemic to Islands of East Asia, Estimated by Newly Developed Microsatellite Markers

Ando

Kaneko

Suzuki³

et al. 2011

Zoological Science

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mentioning

confidence: 99%

Genetic Diversity of the Japanese Wood Pigeon,Columba janthina, Endemic to Islands of East Asia, Estimated by Newly Developed Microsatellite Markers

Ando

Kaneko

Suzuki³

et al. 2011

Zoological Science

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“…Many birds occupy the island, but most relevant to this study is the island scrub-jay (Aphelocoma insularis). The island fox and island scrub-jay have recently been the focus of major conservation efforts (Coonan et al 2010;Morrison et al 2011).…”

Section: Study Areamentioning

confidence: 99%

“…Conservation management of the island has focused on the removal of non-native species, such as sheep, cattle, and pigs. Today all introduced mainland vertebrate species have been eradicated and vegetation has been recovering for the last few decades (Morrison et al 2011). While much of the native vegetation has survived in refugia or returned with the removal of livestock, parts of the island have converted to dense stands of fennel (Foeniculum vulgare), a common California invasive Green et al 1998), (2) a small-footprint waveform LiDAR scanner, and (3) a global positioning system-inertial measurement unit (GPS-IMU) (Asner et al 2007).…”

Section: Study Areamentioning

confidence: 99%

“…In California's Channel Islands, one proposed strategy to reduce the extinction risk of the island scrub-jay is to establish a population of jays on neighboring Santa Rosa Island (SRI; Morrison et al 2011). In 2011 the last of the introduced herbivores were dispatched from SRI, and it has been suggested that the introduction of scrub-jays could hasten re-establishment of native oaks and pines across that island (Morrison et al 2011). Our study suggests that scrub-jays likely do act as 'ecosystem engineers' (Byers et al 2006) in these systems by transporting acorns long distances.…”

Section: Conservation Implicationsmentioning

confidence: 99%

“…Lloret et al 2005) or the conservation of rare or endangered island endemics (e.g. Morrison et al 2011). Recent restoration efforts are changing this paradigm, and now globally there are several protected, recovering mediterranean-type islands or parts of islands, including California's Channel Islands (Channel Islands National Park, www.nps.gov/chis) and South Australia's Investigator Group archipelago (Investigator Group Conservation Park, www.environment.sa.gov.au).…”

Section: Introductionmentioning

confidence: 99%

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Linking vegetation patterns to environmental gradients and human impacts in a mediterranean-type island ecosystem

2014

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Vegetation patterns at the landscape scale are shaped by myriad processes and historical events, and understanding the relative importance of these processes aids in predicting current and future plant distributions. To quantify the influence of different environmental and anthropogenic patterns on observed vegetation patterns, we used simultaneous autoregressive modeling to analyze data collected by the Carnegie Airborne Observatory over Santa Cruz Island (SCI; California, USA). SCI is a large continental island, and its limited suite of species and well documented land use history allowed us to consider many potential determinants of vegetation patterns, such as topography, substrate, and historical grazing intensity. As a metric of vegetation heterogeneity, we used the normalized difference vegetation index (NDVI) stratified into three vegetation height classes using LiDAR (short, medium, and tall). In the SAR models topography and substrate type were important controls, together explaining 8-15 % of the total variation in NDVI, but historical grazing and spatial autocorrelation were also key components of the models, together explaining 17-21 % of the variation in NDVI. Optimal spatial autocorrelation distances in the short and medium height vegetation models (600-700 m) were similar to the home range sizes of two crucial seed dispersers on the island-the island fox (Urocyon littoralis santacruzae) and the island scrub-jay (Aphelocoma insularis)-suggesting that these animals may be important drivers of the island's vegetation patterns. This study highlights the importance of dynamic processes like dispersal limitation and disturbance history in determining presentday vegetation patterns.

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Co‐development of a risk assessment strategy for managed relocation

Karasov-Olson

Schwartz

Skikne

et al. 2021

Ecol Sol and Evidence

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Resource managers face mounting challenges when it comes to the implementation of climate change adaptation strategies. Novel adaptation strategies, such as managed relocation, frequently entail embracing substantial risk of unintended harm to the focal ecosystems, in an effort to alleviate serious threats to biological diversity (e.g. extinction). Assessing ecological risks associated with different adaptation strategies is consistently called for, but the process for doing so is often undefined. Here, we describe a collaboration amongst university researchers, agency scientists and resource managers to create a set of ecological risk assessment protocols for managed relocation decision support. These protocols are designed to foster a rigorous assessment of ecological risk, while simultaneously being flexible and easy to use. We describe a collaborative process through which we developed a structure for assessing risk that includes a suite of 17 risk categories aggregated into six overarching groups, which is placed within a broader decision context for managed relocation (e.g. evaluating feasibility, social acceptability). Our risk scoring includes both scaled estimates of risk and perceived confidence in those estimates. Because of differences in the importance of risk categories, we do not recommend a quantitative summary across risk areas, but suggest decision makers make decisions based on three criteria: overall confidence that a proposed action can be confidently evaluated; low overall level or risk across categories; and no single risk category that is highly likely to result in severe adverse outcomes.

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Proactive Conservation Management of an Island-endemic Bird Species in the Face of Global Change

Cited by 37 publications

References 28 publications

Genetic Diversity of the Japanese Wood Pigeon,Columba janthina, Endemic to Islands of East Asia, Estimated by Newly Developed Microsatellite Markers

Genetic Diversity of the Japanese Wood Pigeon,Columba janthina, Endemic to Islands of East Asia, Estimated by Newly Developed Microsatellite Markers

Linking vegetation patterns to environmental gradients and human impacts in a mediterranean-type island ecosystem

Co‐development of a risk assessment strategy for managed relocation

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