Lark Sparrow (Chondestes grammacus)

Martin, John W.; Parrish, Jimmie R.

doi:10.2173/bna.larspa.02

Cited by 11 publications

(14 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the sample units are approximately the size of a territory, occupancy can be interpreted as abundance or the number of territories (MacKenzie et al 2006). The published accounts of territory size ranged from 0.01 ha to 6.4 ha for the brown creeper (Hejl et al 2002) and 0.01 to 6.0 ha for the lark sparrow (Martin and Parrish 2000). Because the area sampled by the survey stations approached the maximum territory size for the 2 species, we considered small scale occupancy an estimate of the minimum number of occupied territories within the sample unit.…”

Section: Discussionmentioning

confidence: 99%

Hierarchical multi‐scale occupancy estimation for monitoring wildlife populations

Pavlacky¹,

Blakesley²,

White

et al. 2011

J Wildl Manag

105

View full text Add to dashboard Cite

Occupancy estimation is an effective analytic framework, but requires repeated surveys of a sample unit to estimate the probability of detection. Detection rates can be estimated from spatially replicated rather than temporally replicated surveys, but this may violate the closure assumption and result in biased estimates of occupancy. We present a new application of a multi-scale occupancy model that permits the simultaneous use of presence-absence data collected at 2 spatial scales and uses a removal design to estimate the probability of detection. Occupancy at the small scale corresponds to local territory occupancy, whereas occupancy at the large scale corresponds to regional occupancy of the sample units. Small-scale occupancy also corresponds to a spatial availability or coverage parameter where a species may be unavailable for sampling at a fraction of the survey stations. We applied the multi-scale occupancy model to a hierarchical sample design for 2 bird species in the Black Hills National Forest: brown creeper (Certhia americana) and lark sparrow (Chondestes grammacus). Our application of the multi-scale occupancy model is particularly well suited for hierarchical sample designs, such as spatially replicated survey stations within sample units that are typical of avian monitoring programs. The model appropriately accounts for the non-independence of the spatially replicated survey stations, addresses the closure assumption for the spatially replicated survey stations, and is useful for decomposing the observation process into detection and availability parameters. This analytic approach is likely to be useful for monitoring at local and regional scales, modeling multi-scale habitat relationships, and estimating population state variables for rare species of conservation concern. ß 2011 The Wildlife Society.

show abstract

Section: Discussionmentioning

confidence: 99%

Hierarchical multi‐scale occupancy estimation for monitoring wildlife populations

Pavlacky¹,

Blakesley²,

White

et al. 2011

J Wildl Manag

105

View full text Add to dashboard Cite

show abstract

“…41) was the third country record. (Martin & Parrish 2000) and is a vagrant to Central America. A specimen was taken near Alotenango, dpto.…”

Section: Clay-coloured Sparrow Spizella Pallida (D; Vagm)mentioning

confidence: 99%

Full Issue

2018

Bulletin of the British Ornithologists' Club

View full text Add to dashboard Cite

“…Regional variation within the Lark Sparrow has been previously described at the morphological level. In 1827, Swainson distinguished a Western subspecies (C. g. strigatus) from Eastern conspecifics (C. g. grammacus) on the basis of the former's lighter-pigmented head and body plumage (Martin and Parrish 2000). However, Martin and Parrish (2000) expressed doubt that plumage pigmentation alone could signify regional divergence or support subspecies distinctions.…”

Section: Introductionmentioning

confidence: 99%

“…In 1827, Swainson distinguished a Western subspecies (C. g. strigatus) from Eastern conspecifics (C. g. grammacus) on the basis of the former's lighter-pigmented head and body plumage (Martin and Parrish 2000). However, Martin and Parrish (2000) expressed doubt that plumage pigmentation alone could signify regional divergence or support subspecies distinctions. Plumage variation may instead be clinal, given that pigmentation gradually changes where subspecies ranges overlap (Pyle 1997, Martin andParrish 2000).…”

Section: Introductionmentioning

confidence: 99%

“…However, Martin and Parrish (2000) expressed doubt that plumage pigmentation alone could signify regional divergence or support subspecies distinctions. Plumage variation may instead be clinal, given that pigmentation gradually changes where subspecies ranges overlap (Pyle 1997, Martin andParrish 2000). Oberholser (1932) later used morphometric differences to describe the westernmost populations of C. g. strigatus as an ''Oregon'' subspecies (C. g. actitus), though this distinction has received little evaluation and less acceptance (Miller 1941, Martin andParrish 2000).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation