Red-cockaded woodpecker habitat characteristics associated with partial brood loss in the Upper East Gulf Coastal Plain, USA DOI Creative Commons

E.J. Martin,

Franco N Gigliotti,

PFB Ferguson

et al.

Endangered Species Research, Journal Year: 2023, Volume and Issue: 50, P. 249 - 265

Published: April 19, 2023

Some red-cockaded woodpecker (RCW) Dryobates borealis populations remain understudied. This is notable because management that incorporates population demographics and site characteristics may benefit RCW recovery. The Oakmulgee Ranger District of the Talladega National Forest (Alabama, USA) has no wiregrass Aristida stricta , small forest stand sizes, rolling topography, contains an understudied population. Our goal in was to characterize habitat, possibly identify ways which habitat differed from other regions, estimate associations between reproductive output. We found 70.2 92.5% sampled stands met recovery standard thresholds for large pine basal area (BA) as defined United States Fish Wildlife Service (USFWS) Recovery Plan. While 74.6% longleaf Pinus palustris -dominated threshold overstory hardwood canopy composition, 60.0% loblolly P. taeda did not. Few recommended percentage herbaceous understory (19.8%) or absence midstory. A lower rate partial brood loss associated with a greater pines (≥25.4 cm diameter at breast height; DBH), smaller (≥10 <25.4 larger burned dormant season, higher density. In our models, midstory not influence egg hatchling production. Hardwoods could contribute unfavorable indicated USFWS Plan, well relate variation across RCW’s range. Regions range are understudied, limited staffing funding impede advances understanding conservation.

Language: Английский

When to depart from a stopover site? Time since arrival matters more than current weather conditions DOI
Sébastien Roques, Pierre‐Yves Henry,

Gaétan Guyot

et al.

Ornithology, Journal Year: 2021, Volume and Issue: 139(1)

Published: Sept. 28, 2021

Abstract On the journey to wintering sites, most migratory birds alternate between flights and stopovers, where they rest refuel. In contrast time-minimization strategy commonly assumed drive pre-breeding migration, are rather expected follow an energy minimization during post-breeding migration. It is cumulative duration of stopovers that determines total requirements journey. Since migrating actually spend time at selection minimize amount or spent on migration likely operate effectiveness stopover refueling. Here, we address relative contribution factors acting departure decisions from a site in long-distance songbird. When capture probability low, it impossible measure fattening over entire stopover. To get around this limitation, use since arrival (TSA) as proxy for progressive temporal change occurring internal state individual (i.e. rest, physiological recovery, fuel loading) We develop capture–recapture model respective effects estimated TSA weather conditions probability. Using 20-year dataset Sedge Warblers (Acrocephalus schoenobaenus), show served surrogate important information when deciding depart site, while low humidity rising atmospheric pressure only slightly increase daily Hence, bird would resume mainly according had refuel, then fine-tuning decision conditions. The generality these results needs be assessed by applying modeling framework other species sites times with greater variability.

Language: Английский

Citations

8
Managing for red‐cockaded woodpeckers is more complicated under climate change DOI Creative Commons
Melissa S. Lucash, Shelby A. Weiss, Matthew J. Duveneck

et al.

Journal of Wildlife Management, Journal Year: 2022, Volume and Issue: 86(8)

Published: Sept. 21, 2022

Abstract Open pine ( Pinus spp.) savannas are home to the federally endangered red‐cockaded woodpecker Leuconotopicus borealis ). Frequent fires essential for maintaining open canopy and wiregrass Aristida stricta ) groundcover preferred by these woodpeckers, which face ongoing threats from climate change, hurricanes, land use change. Our objective was project future changes in habitat woodpeckers at Fort Bragg military installation North Carolina, USA, under different scenarios of disturbances 2000 2050. We used a spatially explicit, forest simulation model (LANDIS‐II) simulate management (prescribed fire, thinning, harvesting). examined relative risks change hurricanes quantified capacity practices promote their habitat, given projected climate. Climate had little direct effect on but it reduced managers prescribed as currently practiced. This became more pronounced scenario with low fire frequency, caused 10% decline Hurricanes substantial impact than or management, causing an average extent 41% compared without hurricanes. work suggests that pose greater threat despite threats, overall will likely still increase until 2050, bodes well this species. Deployment burning challenging warming, if trend continues, may threaten conservation efforts over next century.

Language: Английский

Citations

6
Remotely sensed habitat quality index reliably predicts an umbrella species presence but not demographic performance: A case study with open pine forests and red-cockaded woodpeckers DOI Creative Commons
Traci P. DuBose, Gina K. Himes Boor,

Margaret Fields

et al.

Ecological Indicators, Journal Year: 2023, Volume and Issue: 154, P. 110480 - 110480

Published: June 16, 2023

Remote sensing data can be a powerful and cost-effective method for determining the extent, composition, structure of ecosystems across large areas. To use this tool effective conservation individual species, we need to test assumption that remotely sensed habitat indices correspond both patch suitability (i.e., presence) value demographic rates) species reliant on those habitats. We built an open pine quality index (HQI) from spectral identify condition stands. correlated HQI with presence, group size, fledgling production avian (red-cockaded woodpecker, Dryobates (=Picoides) borealis, RCW) associated longleaf (Pinus palustris) using Bayesian logistic regressions structural equation models. The was RCW cavity tree foraging area 10.8 16.0 increased odds presence each unit increase in HQI, respectively. However, not performance. Given RCWs are umbrella currently limited by habitat, successfully identifies areas higher is useful planning. Improving specificity could improve link between performance, but might limit its application RCW, instead entire endemic community. Our study suggests linking generalized possible strengthens justification their cost-effective, large-scale imperiled ecosystems.

Language: Английский

Citations

3
An Ecological Succession Lesson from a Beaver’s Point of View DOI Open Access

Hannah Schmidt,

Kaleb K. Heinrich,

Jennifer L. Reynolds

et al.

The American Biology Teacher, Journal Year: 2022, Volume and Issue: 84(4), P. 229 - 235

Published: April 1, 2022

Ecological succession explored at the secondary and postsecondary level is often limited to terrestrial ecosystems. The emphasis traditionally placed on how deforestation leads ecological succession. However, aquatic just as important allows for many connections be made with other concepts. Succession initiated by beavers (Castor canadensis) in particular links both ecosystems over time. We present a guide an inquiry-based lesson AP Environmental Science undergraduate ecology courses that explores effects of beavers. Specifically, focus its In this lesson, students (1) engage preassessment broad overview succession, (2) explore authentic research data representing beaver ponds, (3) explain using detective activities, (4) elaborate mystery pond, (5) evaluate their new understanding comparing pre- postassessment. This plan meets objectives Biology well core concepts competencies biology education from Vision Change report American Association Advancement 2011.

Language: Английский

Citations

1
Red-cockaded woodpecker habitat characteristics associated with partial brood loss in the Upper East Gulf Coastal Plain, USA DOI Creative Commons

E.J. Martin,

Franco N Gigliotti,

PFB Ferguson

et al.

Endangered Species Research, Journal Year: 2023, Volume and Issue: 50, P. 249 - 265

Published: April 19, 2023

Some red-cockaded woodpecker (RCW) Dryobates borealis populations remain understudied. This is notable because management that incorporates population demographics and site characteristics may benefit RCW recovery. The Oakmulgee Ranger District of the Talladega National Forest (Alabama, USA) has no wiregrass Aristida stricta , small forest stand sizes, rolling topography, contains an understudied population. Our goal in was to characterize habitat, possibly identify ways which habitat differed from other regions, estimate associations between reproductive output. We found 70.2 92.5% sampled stands met recovery standard thresholds for large pine basal area (BA) as defined United States Fish Wildlife Service (USFWS) Recovery Plan. While 74.6% longleaf Pinus palustris -dominated threshold overstory hardwood canopy composition, 60.0% loblolly P. taeda did not. Few recommended percentage herbaceous understory (19.8%) or absence midstory. A lower rate partial brood loss associated with a greater pines (≥25.4 cm diameter at breast height; DBH), smaller (≥10 <25.4 larger burned dormant season, higher density. In our models, midstory not influence egg hatchling production. Hardwoods could contribute unfavorable indicated USFWS Plan, well relate variation across RCW’s range. Regions range are understudied, limited staffing funding impede advances understanding conservation.

Language: Английский

Citations

0