Comparing census methods for the endangered Kirtland's Warbler

Probst, John R.; Donner, Deahn M.; Worland, Mike; Weinrich, Jerry; Huber, Phillip; Ennis, Kenneth R.

doi:10.1648/0273-8570-76.1.50

Cited by 20 publications

(24 citation statements)

References 19 publications

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“…3). The census is conducted annually along transects from 6 to 15 June when the males are actively singing (Probst et al, 2005). Currently nearly 60,000 ha of jack pine are being managed for the warbler and more than 90% of the population occupies plantations .…”

Section: How Is Endr Being Implemented?mentioning

confidence: 99%

Emulating natural disturbance regimes as a basis for forest management: A North American view

Long

2009

Forest Ecology and Management

160

100

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Section: How Is Endr Being Implemented?mentioning

confidence: 99%

Emulating natural disturbance regimes as a basis for forest management: A North American view

Long

2009

Forest Ecology and Management

160

100

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“…Methods for conducting the Kirtland's Warbler official census are standardized to minimize sources of variation important to monitoring programs (Ryel, 1981). The official census was found to be a reliable index of the regional male population trend (Probst et al, 2005).…”

Section: Suitable Breeding Habitat and Patch Attributesmentioning

confidence: 99%

“…Federal and state forest management stands 3-23 years old are identified and surveyed for singing males from June 6 to 15 (Ryel, 1981;Probst et al, 2005). Management stands are readily discernible from each other because stands often are surrounded by roads, adjacent stands are a different age (i.e., height), or surrounding vegetation is not jack pine.…”

Section: Suitable Breeding Habitat and Patch Attributesmentioning

confidence: 99%

“…Management stands are readily discernible from each other because stands often are surrounded by roads, adjacent stands are a different age (i.e., height), or surrounding vegetation is not jack pine. The location of males is recorded along parallel routes spaced 320-400 m apart along the long axis of a stand and results combined to obtain number of males per stand (Ryel, 1981;Probst et al, 2005). The males' song is loud and can be heard for up to 400 m (Ryel, 1981;Probst et al, 2005).…”

Section: Suitable Breeding Habitat and Patch Attributesmentioning

confidence: 99%

“…The location of males is recorded along parallel routes spaced 320-400 m apart along the long axis of a stand and results combined to obtain number of males per stand (Ryel, 1981;Probst et al, 2005). The males' song is loud and can be heard for up to 400 m (Ryel, 1981;Probst et al, 2005). Bias due to variable detection rate was low because a single covertype with similar structure across regeneration types was censused and multiple observers are involved.…”

Section: Suitable Breeding Habitat and Patch Attributesmentioning

confidence: 99%

See 2 more Smart Citations

Male Kirtland's Warblers’ patch-level response to landscape structure during periods of varying population size and habitat amounts

Donner

Ribic

Probst

2009

Forest Ecology and Management

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Survey and analysis design for wood turtle population monitoring

2017

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Population monitoring is a fundamental component of wildlife management, and is necessary to track site-and regional-level status and recovery of species of conservation concern. The wood turtle (Glyptemys insculpta) is a species of conservation concern for federal and state agencies because of population declines across the species' range. We developed and tested a survey and analysis design to assist agencies in the Upper Midwest, USA, with establishment of long-term monitoring programs for wood turtle populations. In spring of 2016, we conducted 8 replicate population surveys at 8 candidate long-term monitoring sites in northeastern Minnesota, USA. Using field survey data and simulation models, we assessed the influence of distance from river surveyed, number of survey replications, and number of sites on abundance estimates; we also delineated important survey covariates and compared demographic estimates based on distance from river surveyed. We estimated site-level abundances and compared survey designs using a multinomial N-mixture model that included a removal sampling observation process. Mean abundance estimates were similar when surveying 2 transects (i.e., the river-land interface to $25 m inland) or 4 transects (i.e., the river-land interface to $55 m inland), but decreasing the survey distance from river reduced the precision of estimates. Mean abundance estimates were similar with !6 replications. Air temperature was an important predictor of survey-specific detection probability, with maximum detectability at 19À238C. Sex ratio and mean carapace length did not differ based on whether we surveyed 2 or 4 transects, and percentage of individuals by size class was nearly identical between the sampling designs. Simulations indicated that 75% of mean abundance estimates were within AE8% of true abundance when !15 sites were surveyed. The wood turtle survey and analysis design we developed and tested was effective for estimating abundance of wood turtle populations in northeastern Minnesota, and we encourage its use as a template for wood turtle monitoring programs in the Upper Midwest. Ó 2017 The Wildlife Society.

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Comparing census methods for the endangered Kirtland's Warbler

Cited by 20 publications

References 19 publications

Emulating natural disturbance regimes as a basis for forest management: A North American view

Emulating natural disturbance regimes as a basis for forest management: A North American view

Male Kirtland's Warblers’ patch-level response to landscape structure during periods of varying population size and habitat amounts

Survey and analysis design for wood turtle population monitoring

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