Effects of Vegetation, Interspecific Competition, and Brood Parasitism on Golden-Winged Warbler (Vermivora chrysoptera) Nesting Success

Confer, John L.; Larkin, Jeffery L.; Allen, Paul E.

doi:10.2307/4090148

Cited by 28 publications

(55 citation statements)

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“…We found both habitat covariates useful for modeling whether a habitat patch would be mixed (both GWWA and BWWA) or pure GWWA and both willow cover (negatively) (Lee et al 2005, Stromberg andRychener 2010) and grassland cover (positively) (Higgins et al 1989, Telfer 2000 are affected by fire. Our results are consistent with Klaus and Buehler (2001) and Confer et al (2003) who demonstrated a negative relationship between canopy cover and GWWA nest site selection and fledging success respectively. Patton et al (2010) demonstrated a positive relationship between grassland cover and GWWA habitat use.…”

Section: Discussionsupporting

confidence: 81%

“…Several studies have reported GWWA habitat use or selection compared to that of BWWAs (Confer and Knapp 1981, Confer et al 2003, Patton et al 2010. We chose to limit our study to pure GWWA and mixed sites because our study objective was examination of reproductive barri- Grassland habitat classes and cover types are the same with the exception of brush prairie, which was further divided (cover types) by canopy cover.…”

Section: Classifying Habitat Patchesmentioning

confidence: 99%

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Fire created habitat partitioning and isolation between hybridizing warblers

King¹,

Boysen²,

Brenneman³

et al. 2015

Ecosphere

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Abstract. Hybridization or the breakdown of reproductive barriers has perplexed conservationists for centuries. Hybridization between the golden-winged warbler (Vermivora chrysoptera) and blue-winged warbler (Vermivora cyanoptera) has received extensive study across North America for more than a century and indicates widespread, bi-directional genetic introgression. We found evidence fire is creating habitat conditions leading to isolation between nesting golden-winged warblers and blue-winged warblers. This effect is likely the result of fire's ability to promote grass cover and suppress woody plants, leading to habitat use partitioning between golden-winged warblers and blue-winged warblers. In addition to minimizing contact between the species, fire is creating habitat conditions on mixed sites that greatly favors golden-winged warblers over blue-winged warblers. Fire provides a plausible explanation for the original split in these sister species and its near elimination from eastern North America provides at least a partial explanation for the golden-winged warbler's extensive range-wide decline. Fire also provides a potential conservation tool by isolating golden-winged warbler and blue-winged warbler nesting populations. If nesting populations can be isolated, relatively rapid phenotypic sorting can be achieved, which could lead to a clearer distinction between the taxa as well as species preservation.

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Section: Discussionsupporting

confidence: 81%

Section: Classifying Habitat Patchesmentioning

confidence: 99%

Fire created habitat partitioning and isolation between hybridizing warblers

King¹,

Boysen²,

Brenneman³

et al. 2015

Ecosphere

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“…We predicted that warbler abundance would have a quadratic relationship to time since harvest Buehler 2001, Bulluck andBuehler 2008). Furthermore, we expected that warbler abundance would be positively related to herbaceous cover (Klaus and Buehler 2001, Confer et al 2003, Bulluck and Buehler 2008, Aldinger 2010, sapling density Lutz 2004, Martin et al 2007), and shrub cover (Confer et al 2003, Martin et al 2007, Aldinger and Wood 2014 but negatively related to distance to a microedge, i.e., patchy conditions (Rossell et al 2003, Buehler et al 2007). We predicted a positive or quadratic response between warbler numbers and residual basal area (Rossell 2001, Roth et al 2014).…”

Section: Analysesmentioning

confidence: 99%

Stand and within-stand factors influencing Golden-winged Warbler use of regenerating stands in the central Appalachian Mountains

Bakermans¹,

Smith²,

Jones³

et al. 2015

ACE

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ABSTRACT. The Golden-winged Warbler (Vermivora chrysoptera) is currently being considered for protected status under the U.S. Endangered Species Act. The creation of breeding habitat in the Appalachian Mountains is considered a conservation priority for this songbird, which is dependent on extensively forested landscapes with adequate availability of young forest. We modeled abundance of Golden-winged Warbler males in regenerating harvested forest stands that were 0-17 years postharvest at both mid-Appalachian and northeast Pennsylvania regional scales using stand and within-stand characteristics of 222 regenerating stands, 2010-2011. Variables that were most influential at the mid-Appalachian scale were different than those in the northeast region. Across the mid-Appalachian ecoregion, the proportion of young forest cover, i.e., shrub/scrub cover, within 1 km of regenerating stands best explained abundance of Golden-winged Warblers. Golden-winged Warbler response was best explained by a concave quadratic relationship in which abundance was highest with 5-15% land in young forest cover. We also found evidence that the amount of herbaceous cover, i.e., the amount of grasses and forbs, within a regenerating stand positively influenced abundance of Golden-winged Warblers. In northeastern Pennsylvania, where young forest cover is found in high proportions, the distance to the nearest regenerating stand best explained variation in abundance of Golden-winged Warblers. Abundance of Golden-winged Warblers was <1 male per survey when another regenerating stand was >1500 m away. When modeling within-stand features in the northeast region, many of the models were closely ranked, indicating that multiple variables likely explained Golden-winged Warbler response to within-stand conditions. Based on our findings, we have proposed several management guidelines for land managers interested in creating breeding habitat for Golden-winged Warblers using commercial timber operations. For example, we recommend when managing for Golden-winged Warblers in the central Appalachian Mountains that managers should strive for 15% young forest in a heavily forested landscape (>70% forest cover) and cluster stands within 1-2 km of other young forest habitats.Caractéristiques de peuplements et intra-peuplements ayant une influence sur l'utilisation de peuplements en régénération par la Paruline à ailes dorées dans le secteur centre des Appalaches RÉSUMÉ. La Paruline à ailes dorées (Vermivora chrysoptera) est présentement sur la liste des espèces candidates pour l'obtention d'un statut de protection en vertu de la Endangered Species Act (loi sur les espèces en péril) aux États-Unis. La création de milieux de nidification dans les Appalaches est vue comme une priorité de conservation pour ce passereau, qui dépend de vastes paysages boisés pourvus de jeunes forêts adéquates. Nous avons modélisé l'abondance de Parulines à ailes dorées mâles dans des peuplements forestiers en régénération après récolte, âgés de 0 à 17 ans, à l'échelle régionale des...

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“…Confer et al 2003), and habitat use by chrysoptera and pinus across their geographic ranges appears to vary considerably (e.g. Bent 1953;Ewert 1981;Will 1986;Freeh and Confer 1987;Confer 1992;Canterbury et al 1993Canterbury et al ,1996Kelly 1996;Gill et al 2001;Hanowski 2002;Confer et al 2003). Thus, effects of habitat succession can provide, at best, only a partial explanation for the decline of chrysoptera.…”

Section: Introductionmentioning

confidence: 99%

“…More importantly, although availability of earlysuccessional habitat in eastern North America has decreased dramatically during the past century (Hunter et al 2001), chrysoptera declines have been noted even where apparently suitable habitat remains (e.g. Confer et al 2003), and habitat use by chrysoptera and pinus across their geographic ranges appears to vary considerably (e.g. Bent 1953;Ewert 1981;Will 1986;Freeh and Confer 1987;Confer 1992;Canterbury et al 1993Canterbury et al ,1996Kelly 1996;Gill et al 2001;Hanowski 2002;Confer et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Reciprocal Introgression between Golden-Winged Warblers (Vermivora chrysoptera) and Blue-Winged Warblers (V. pinus) in Eastern North America

Shapiro¹,

Canterbury²,

Fleischer³

2004

The Auk

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ABSTRACT.• Golden-winged Warblers (Vermivora chrysoptera) and Blue-winged Warblers (V: pinus) are small, brightly colored Neotropical migrant birds that breed in eastern North America. Wherever the two species occur together, they hybridize to a limited degree, producing distinctive hybrid phenotypes. In recent decades, chrysoptera has experienced dramatic population declines across much of its range. Those declines have often been correlated with establishment and increase of pinus in the same areas, but it remains uncertain what, if any, role pinus has played in driving the decline of chrysoptera. In a first attempt at molecular genetic analysis of chrysoptera-pinus population dynamics. Gill (1997) reported cryptic, completely asymmetric, and possibly very rapid introgression of pinus mitochondrial DNA (mtDNA) into chrysoptera, causing what he termed "local cytonuclear extinction" of chrysoptera. As Gill (1997) noted, however, those results were based on relatively small samples from a single area in Pennsylvania. To begin to investigate the generality of Gill's findings and to establish a baseline for long-term genetic and ecological studies, we intensively sampled one new study area (in southern West Virginia) and also sampled more broadly across two other areas (in Michigan and Ohio) that have experienced pinus invasions and chrysoptera declines. In southern West Virginia, introgression of mtDNA appeared to be roughly symmetrical: 15% (11 of 72) of pinus phenotypes possessed chrysoptera mtDNA, and 12% (17 of 137) of chrysoptera phenotypes possessed pinus mtDNA. Results from much smaller samples from Michigan and Ohio also failed to show any evidence of asymmetric mitochondrial introgression. The results we report here, based on mtDNA and plumage phenotype information for 337 birds representing much of the range of the two species, indicate that previous genetic results and inferences from Pennsylvania may not be broadly applicable to the many areas of contact between chrysoptera and pinus in eastern North America.

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Effects of Vegetation, Interspecific Competition, and Brood Parasitism on Golden-Winged Warbler (Vermivora chrysoptera) Nesting Success

Cited by 28 publications

References 8 publications

Fire created habitat partitioning and isolation between hybridizing warblers

Fire created habitat partitioning and isolation between hybridizing warblers

Stand and within-stand factors influencing Golden-winged Warbler use of regenerating stands in the central Appalachian Mountains

Reciprocal Introgression between Golden-Winged Warblers (Vermivora chrysoptera) and Blue-Winged Warblers (V. pinus) in Eastern North America

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