Apparent Survival of Snowy Plovers (Charadrius nivosus) Varies with Reproductive Effort and Year and between Sexes Colwell, Mark Dinsmore, Stephen Pearson, Wendy Eberhart-Phillips, Luke Dinsmore, Stephen
dc.contributor.department Natural Resource Ecology and Management 2018-02-15T20:55:17.000 2020-06-30T06:13:34Z 2020-06-30T06:13:34Z Tue Jan 01 00:00:00 UTC 2013 2015-02-27 2013-01-01
dc.description.abstract <p>Life history theory predicts a tradeoff between reproductive effort and survival, which suggests that some management practices aimed at increasing productivity may compromise population growth. We analyzed a 10-year data set of 225 individually marked Snowy Plovers (Charadrius nivosus), a threatened shorebird, to determine whether individual reproductive effort was correlated with low apparent survival. Most adults resided in the population an average of 2 years (range: 1–10 years), during which females laid 3–60 eggs, and both males and females invested considerable time in incubation and brooding. Apparent survival varied annually and was higher for males than for females. Contrary to theory, we found no evidence that increased reproductive effort, either current or cumulative, compromised survival. Instead, apparent survival was correlated positively with incubation time, which may be related to either high-quality individuals having high reproductive rates and high survival or permanent emigration of failed breeders (who incubated for shorter intervals). Although our results suggest that some predator management practices (e.g., nest exclosures) aimed at increasing productivity will not compromise survival in a subsequent year, we caution that these same practices may have serious negative consequences for population growth if (1) reproductive effort does not translate into higher per capita fledging success and (2) direct mortality of adults results from the practice.</p>
dc.description.comments <p>This article is from <em>Auk</em> 130 (2013): 725, doi:10.1525/auk.2013.13147. Poste with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/
dc.identifier.articleid 1032
dc.identifier.contextkey 6742033
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath nrem_pubs/38
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 23:51:58 UTC 2022
dc.source.uri 10.1525/auk.2013.13147
dc.subject.disciplines Natural Resources Management and Policy
dc.subject.disciplines Ornithology
dc.subject.disciplines Population Biology
dc.subject.disciplines Poultry or Avian Science
dc.subject.keywords apparent survival
dc.subject.keywords Charadrius nivosus
dc.subject.keywords incubation
dc.subject.keywords reproductive effort
dc.subject.keywords Snowy Plover
dc.subject.keywords threatened
dc.title Apparent Survival of Snowy Plovers (Charadrius nivosus) Varies with Reproductive Effort and Year and between Sexes
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 93cc6656-8f88-4982-be9c-06bedefca35f
relation.isOrgUnitOfPublication e87b7b9d-30ea-4978-9fb9-def61b4010ae
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