Survival and Natal Dispersal of Juvenile Snowy Plovers (Charadrius Alexandrinus) in Central Coastal California

Stenzel, Lynne E.; Page, Gary W.; Warriner, Jane C.; Warriner, John S.; George, Douglas E.; Eyster, Carleton R.; Ramer, Bernadette A.; Neuman, Kristina K.

doi:10.1642/0004-8038(2007)124[1023:sandoj]2.0.co;2

Cited by 42 publications

(57 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The majority (80%) were released after 1 July and before 30 September (range: first week of June to third week of October). This range of release dates was consistent with mid-to late-season fledging dates of wild plovers (Page et al 2009), and fledge date has been determined to have no effect on first year survival (Stenzel et al 2007). The release method was considered a 'hard' release; captive fledglings were released directly onto beaches where conspecifics were present, with no acclimatization to the environment prior to release.…”

supporting

confidence: 79%

“…The apparent survival and detection rates we observed for both wild and captive snowy plovers were consistent with estimates obtained in other west coast studies of the species. Previously obtained true survival and site fidelity rate estimates from the larger Monterey Bay population were 0.46 for firstyear survival and 0.77 for fidelity (Stenzel et al 2007). The product of these rates (true survival × site fidelity) yields an Age 1 yr apparent survival of approximately 0.35 during the previous study at Mon- (2008) report an apparent Age 1 yr survival rate of 0.08 for captive piping plovers, which was significantly lower than that of wild plovers from the Great Lakes, but low site fidelity likely was an important factor in this very low apparent survival estimate.…”

mentioning

confidence: 95%

“…Snowyplover Charadrius nivosus (hereafter plover) nesting was concentrated in sandy beach habitat that was backed by low, sparsely vegetated foredunes and at retired salt ponds on the north shore of Elkhorn Slough. See Stenzel et al (2007) for a more detailed description and map. …”

mentioning

confidence: 99%

“…Young birds seen at ≥28 d of age were considered fledged. Methods are described in greater detail in Warriner et al (1986), Neuman et al (2004) and Stenzel et al (2007Stenzel et al ( , 2011. …”

mentioning

confidence: 99%

See 3 more Smart Citations

Success of captive-rearing for a threatened shorebird

Neuman¹,

Stenzel²,

Warriner³

et al. 2013

Endang. Species. Res.

View full text Add to dashboard Cite

Captive-breeding and -rearing programs have been widely used for the conservation and recovery of imperiled species, and the success of such programs should be rigorously evaluated. In this study, we assessed the success of captive-rearing for a threatened shorebird, the snowy plover Charadrius nivosus, by comparing the survival and reproductive success of captivereared and wild-reared individuals on the central California coast from 2001 to 2010. We used mark-recapture analysis, implemented in the program MARK, to estimate apparent annual survival (ϕ) and encounter occasion detection probability (p) from capture and sighting data of marked plovers. We compared 3 measures of reproductive success (hatch rate, fledge rate and juveniles fledged per year) using stratified randomization tests based on individual breeding histories where captive-and wild-reared plovers were matched for age, sex and year. Captive-and wild-reared snowy plovers had similar apparent survival and reproductive rates and paired with mates of similar age in their first breeding year. The only exception was that captive males after their first breeding year had lower fledging rates than males from the overall population, but this did not affect the annual productivity rate. We conclude that releasing captive-reared individuals is a valuable part of ongoing efforts to restore the snowy plover population in California, and is also useful in cases where plover nests may need to be salvaged to protect them from oil contamination or other catastrophic events.KEY WORDS: Shorebird · Snowy plover · Captive-rearing · Survival · Reproduction 22: 85-94, 2013 Bart et al. 2007). Two plover species are listed under the United States Endangered Species Act, the piping plover Charadrius melodus and the snowy plover Charadrius nivosus; C. nivosus was formerly treated as a conspecific of C. alexandrinus (Chesser et al. 2011), but the World Conservation Union (IUCN 2012) has not yet accepted this change or designated status for C. nivosus. Both the piping and snowy plover have recovery plans recommending captive-rearing programs to support conservation efforts (USFWS 2003(USFWS , 2007. Plovers are ideal candidates for captiverearing programs because their offspring develop rapidly and have limited need of parental care. Resale or republication not permitted without written consent of the publisher FREE REE ACCESS CCESSEndang Species ResCaptive-rearing programs for plovers have largely been ancillary to in situ conservation management or used on an emergency basis. Captive-rearing methods developed with killdeer Charadrius vociferus chicks (Powell & Cuthbert 1993, Powell et al. 1997 were applied to the Great Lakes population of the piping plover, but a subsequent analysis of this program found that the captive plovers had significantly lower apparent survival rates and breeding success than wild plovers (Roche et al. 2008). Similarly, Goossen et al. (2011) reported significantly lower return rates for captive versus wild piping plovers in Saska...

show abstract

supporting

confidence: 79%

mentioning

confidence: 95%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Success of captive-rearing for a threatened shorebird

Neuman¹,

Stenzel²,

Warriner³

et al. 2013

Endang. Species. Res.

View full text Add to dashboard Cite

show abstract

“…During the past 2 years predator management has been implemented in Washington, and very preliminary findings indicate a nest success and fledging success response similar to that seen in Oregon (S. F. Pearson personal communication). Other sites with declining populations may find predator management an effective tool in improving reproductive success (but see Stenzel et al 2007). Among the recovery criteria identified in the Western Snowy Plover Pacific Coast Recovery Plan (USFWS 2007) is an average desired yearly productivity of 1.00 chicks fledged per breeding male.…”

Section: Conservation Implicationsmentioning

confidence: 99%

Factors affecting Snowy Plover chick survival in a managed population

et al. 2017

View full text Add to dashboard Cite

Understanding survival of precocial chicks in the period immediately following hatching has important conservation implications because population growth is often sensitive to post-hatching survival. We studied federally threatened Western Snowy Plover (Charadrius nivosus nivosus) broods at the northern limit of their range in coastal Oregon (n = 1,157) and Washington (n = 84) from 1991 to 2011 in an attempt to understand seasonal, annual, and spatial patterns of chick survival. In Oregon, plover chick survival increased with age, varied between sites, and was greater at sites with predator management. The mean probability of surviving from hatch to fledging at 28 days of age in Oregon was 0.57 (95% CI: 0.50, 0.63). In Washington, where predator management was not employed, we conducted separate analyses using individually banded and unbanded chicks and results indicated that survival generally increased with chick age. The mean estimated probability of surviving from hatch to fledging at 28 days of age in Washington was 0.27 (95% CI: 0.20, 0.35) for individually banded chicks when perfect detection was assumed. This probability increased to 0.67 (95% CI: 0.41, 0.83) when we analyzed unbanded chicks and included detection probability. Our findings confirm the importance of considering age effects in the survival of Snowy Plover chicks and raise questions about the validity of assuming perfect detection of plover chicks during brood checks. This work also highlights the benefit of predator management on chick survival. KeywordsCharadrius nivosus, precocial species, chick survival, Oregon, Snowy Plover, Washington BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Factors affecting Snowy Plover chick survival in a managed populationAuthor (s) ABSTRACT Understanding survival of precocial chicks in the period immediately following hatching has important conservation implications because population growth is often sensitive to post-hatching survival. We studied federally threatened Western Snowy Plover (Charadrius nivosus nivosus) broods at the northern limit of their range in coastal Oregon (n ¼ 1,157) and Washington (n ¼ 84) from 1991 to 2011 in an attempt to understand seasonal, annual, and spatial patterns of chick survival. In Oregon, plover chick survival increased with age, varied between sites, and was greater at sites with predator management. The mean probability of surviving from hatch to fledging at 28 days of age in Oregon was 0.57 (95% CI: 0.50, 0.63). In Washington, where predator management was not employed, we conducted separate analyses using individually banded and unbanded chicks and results indicated that survival generally increased with chick age. The mean estimated probability of surviving from hatch to fledging at 28 days of age in Washington was 0.27 (95% CI: 0.20, 0.35) for individu...

show abstract

Contrasting genetic diversity and population structure among three sympatric Madagascan shorebirds: parallels with rarity, endemism, and dispersal

Eberhart-Phillips

Hoffman

Brede

et al. 2015

Ecology and Evolution

View full text Add to dashboard Cite

Understanding the relative contributions of intrinsic and extrinsic factors to population structure and genetic diversity is a central goal of conservation and evolutionary genetics. One way to achieve this is through comparative population genetic analysis of sympatric sister taxa, which allows evaluation of intrinsic factors such as population demography and life history while controlling for phylogenetic relatedness and geography. We used ten conserved microsatellites to explore the population structure and genetic diversity of three sympatric and closely related plover species in southwestern Madagascar: Kittlitz's plover (Charadrius pecuarius), white-fronted plover (C. marginatus), and Madagascar plover (C. thoracicus). Bayesian clustering revealed strong population structure in the rare and endemic Madagascar plover, intermediate population structure in the white-fronted plover, and no detectable population structure in the geographically widespread Kittlitz's plover. In contrast, allelic richness and heterozygosity were highest for the Kittlitz's plover, intermediate for the white-fronted plover and lowest for the Madagascar plover. No evidence was found in support of the “watershed mechanism” proposed to facilitate vicariant divergence of Madagascan lemurs and reptiles, which we attribute to the vagility of birds. However, we found a significant pattern of genetic isolation by distance among populations of the Madagascar plover, but not for the other two species. These findings suggest that interspecific variation in rarity, endemism, and dispersal propensity may influence genetic structure and diversity, even in highly vagile species.

show abstract

Survival and Natal Dispersal of Juvenile Snowy Plovers (Charadrius Alexandrinus) in Central Coastal California

Cited by 42 publications

References 31 publications

Success of captive-rearing for a threatened shorebird

Success of captive-rearing for a threatened shorebird

Factors affecting Snowy Plover chick survival in a managed population

Contrasting genetic diversity and population structure among three sympatric Madagascan shorebirds: parallels with rarity, endemism, and dispersal

Contact Info

Product

Resources

About