White-Headed Woodpecker Occurrences in Sun Pass State Forest, South-Central Oregon

Lindstrand, Len; Humes, Marcia

doi:10.1898/nwn08-32.1

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…For example, in central Oregon and Washington, Buchanan et al (2003) found that white‐headed woodpeckers selected large‐diameter snags (>50 cm dbh) for nest sites that were primarily in mature ponderosa pine forests with sparse canopy. Managed forests with smaller diameter trees (25–50 cm dbh) are also used during the nesting season (Kozma 2009, Lindstrand and Humes 2009).…”

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confidence: 99%

Habitat suitability and nest survival of white‐headed woodpeckers in unburned forests of Oregon

2011

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We evaluated habitat suitability and nest survival of breeding white‐headed woodpeckers (Picoides albolarvatus) in unburned forests of central Oregon, USA. Daily nest‐survival rate was positively related to maximum daily temperature during the nest interval and to density of large‐diameter trees surrounding the nest tree. We developed a niche‐based habitat suitability model (partitioned Mahalanobis distance) for nesting white‐headed woodpeckers using remotely sensed data. Along with low elevation, high density of large trees, and low slope, our habitat suitability model suggested that interspersion–juxtaposition of low‐ and high‐canopy cover ponderosa pine (Pinus ponderosa) patches was important for nest‐site suitability. Cross‐validation suggested the model performed adequately for management planning at a scale >1 ha. Evaluation of mapped habitat suitability index (HSI) suggested that the maximum predictive gain (HSI = 0.36), where the number of nest locations are maximized in the smallest proportion of the modeled landscape, provided an objective initial threshold for identification of suitable habitat. However, managers can choose the threshold HSI most appropriate for their purposes (e.g., locating regions of low–moderate suitability that have potential for habitat restoration). Consequently, our habitat suitability model may be useful for managing dry coniferous forests for white‐headed woodpeckers in central Oregon; however, model validation is necessary before our model could be applied to other locations. © 2011 The Wildlife Society.

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confidence: 99%

Habitat suitability and nest survival of white‐headed woodpeckers in unburned forests of Oregon

2011

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“…Given their status as a sensitive indicator species, whiteheaded woodpeckers have become the focus of numerous research studies in recent years. Somewhat surprisingly, several of these studies have found white-headed woodpeckers in a variety of disturbed and managed habitats including recent burns (Hanson and North 2008, Saab et al 2009, Wightman et al 2010, Tarbill et al 2015, young (<75 yrs) forests used for timber production and livestock grazing (Lindstrand andHumes 2009, Kozma 2011), and salvage logged burns (Kozma 2012). In some of these areas, nest success and productivity rates were similar to rates in older stands of ponderosa pine (Kozma and Kroll 2012).…”

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confidence: 95%

Space use by white‐headed woodpeckers and selection for recent forest disturbances

et al. 2015

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White-headed woodpeckers (Picoides albolarvatus) are important cavity excavators that recently have become the focus of much research because of concerns over population declines. Past studies have focused on nest site selection and survival but information is needed on factors influencing their space use when away from the nest. We examined space use by white-headed woodpeckers during the nesting (MayJul) and post-nesting (Jul-Oct) periods and compared the role of environmental factors (e.g., landcover) and socio-demographic factors (e.g., age, breeding success) in home range size and selection of location. Average size of 99% kernel home ranges was 125 ha (SD AE 59 ha; n ¼ 19) in the nesting period and 137 ha (SD AE 70 ha; n ¼ 30) in the post-nesting period. Minimum convex polygons were generally comparable to or smaller than ranges reported from previous radio-telemetry studies with this species. Although bird weight and age best explained variation in home range size compared to other factors, neither parameter estimate was significant in our models. Thus, even though weight and age were the most-supported factors in our analysis, home range size was largely influenced by factors that we did not measure. We found that most woodpeckers selected home ranges within forest patches that had undergone a recent disturbance; these areas included forests that had recently been burned with prescribed fire by the United States Forest Service (82%) or subject to disease (16%). Most burned patches in our study were small (approx. 4.8 ha) and occurred within otherwise live forest but had nearly complete mortality of adult trees. We suggest that recent forest disturbances, especially mixed-severity prescribed burns, may have been selected by white-headed woodpeckers because they created snags for nesting and future studies should explore this hypothesis. Because home range size was variable and not linked with productivity, it should not be used as an indication of habitat quality without more detailed studies on causal factors that affect space use in this species. Published 2015. This article is a U.S. Government work and is in the public domain in the USA.

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“…This study adds to the growing body of literature indicating that white-headed woodpeckers successfully occupy and breed in forests with historic and recent timber harvest activity (Kozma and Kroll, 2013;Linden and Roloff, 2015;Lindstrand and Humes, 2009;Lorenz et al, 2015a). While they typically require snags for nesting and roosting -one potential component of old-growth (Garrett et al, 1996) -they are not necessarily dependent on large, old pines for foraging during the breeding season.…”

Section: Management Implicationsmentioning

confidence: 85%

Foraging plasticity by a keystone excavator, the white-headed woodpecker, in managed forests: Are there consequences for productivity?

Lorenz

Vierling

Kozma

et al. 2016

Forest Ecology and Management

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White-Headed Woodpecker Occurrences in Sun Pass State Forest, South-Central Oregon

Cited by 5 publications

References 8 publications

Habitat suitability and nest survival of white‐headed woodpeckers in unburned forests of Oregon

Habitat suitability and nest survival of white‐headed woodpeckers in unburned forests of Oregon

Space use by white‐headed woodpeckers and selection for recent forest disturbances

Foraging plasticity by a keystone excavator, the white-headed woodpecker, in managed forests: Are there consequences for productivity?

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