Use of regenerating clearcuts by late-successional bird species and their young during the post-fledging period

Marshall, Matthew R.; DeCecco, Jennifer A.; Williams, Alan; Gale, George; Cooper, Robert J.

doi:10.1016/s0378-1127(03)00101-4

Cited by 91 publications

(83 citation statements)

References 31 publications

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“…In the eastern United States, fledglings of a variety of species move into different habitat upon attaining independence (Anders et al 1998, Marshall et al 2003, Vitz and Rodewald 2006, and sometimes adults use different habitats during or after nesting (Vega Rivera et al 1998, Pagen et al 2000. In western North America, the occurrence of molt-migration in some species results in migration from the nesting grounds to a molting area farther south but still in the temperate zone (Pyle 1997, Carlisle et al 2005.…”

Section: Conservation Strategiesmentioning

confidence: 99%

Conserving migratory land birds in the New World: Do we know enough?

Faaborg

Holmes

Anders³

et al. 2010

Ecological Applications

326

281

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Abstract. Migratory bird needs must be met during four phases of the year: breeding season, fall migration, wintering, and spring migration; thus, management may be needed during all four phases. The bulk of research and management has focused on the breeding season, although several issues remain unsettled, including the spatial extent of habitat influences on fitness and the importance of habitat on the breeding grounds used after breeding. Although detailed investigations have shed light on the ecology and population dynamics of a few avian species, knowledge is sketchy for most species. Replication of comprehensive studies is needed for multiple species across a range of areas.Information deficiencies are even greater during the wintering season, when birds require sites that provide security and food resources needed for survival and developing nutrient reserves for spring migration and, possibly, reproduction. Research is needed on many species simply to identify geographic distributions, wintering sites, habitat use, and basic ecology. Studies are complicated, however, by the mobility of birds and by sexual segregation during winter. Stable-isotope methodology has offered an opportunity to identify linkages between breeding and wintering sites, which facilitates understanding the complete annual cycle of birds.The twice-annual migrations are the poorest-understood events in a bird's life. Migration has always been a risky undertaking, with such anthropogenic features as tall buildings, towers, and wind generators adding to the risk. Species such as woodland specialists migrating through eastern North America have numerous options for pausing during migration to replenish nutrients, but some species depend on limited stopover locations. Research needs for migration include identifying pathways and timetables of migration, quality and distribution of habitats, threats posed by towers and other tall structures, and any bottlenecks for migration. Issues such as human population growth, acid deposition, climate change, and exotic diseases are global concerns with uncertain consequences to migratory birds and even lesscertain remedies. Despite enormous gaps in our understanding of these birds, research, much of it occurring in the past 30 years, has provided sufficient information to make intelligent conservation efforts but needs to expand to handle future challenges.

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Section: Conservation Strategiesmentioning

confidence: 99%

Conserving migratory land birds in the New World: Do we know enough?

Faaborg

Holmes

Anders³

et al. 2010

Ecological Applications

326

281

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show abstract

“…Juvenile Swainson's Thrush (Catharus ustulatus) move from riparian areas to mixed-hardwood forests and coastal scrub after fledging, searching for ripening fruit (White et al 2005). Recent netting studies within clearcuts in eastern deciduous forest have expanded the list of forest-breeding species that appear to use second-growth vegetation in late summer, but these studies did not show if such habitats were required by these species (Marshall et al 2003, King et al 2006, Vitz and Rodewald 2006; J. Faaborg, P. A. Porneluzi, R. Brito-Aguilar, and R. L. Clawson, unpublished manuscript). These post-breeding habitats may be critical to both the juvenile and adult survival components of breeding-season fitness, but they have not been studied in depth (Ahlering andFaaborg 2006, Whittaker andMarzluff 2009).…”

Section: Habitat Selection and Suitabilitymentioning

confidence: 99%

Recent advances in understanding migration systems of New World land birds

Faaborg

Holmes

Anders

et al. 2010

Ecological Monographs

291

259

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Abstract. Our understanding of migratory birds' year-round ecology and evolution remains patchy despite recent fundamental advances. Periodic reviews focus future research and inform conservation and management; here, we take advantage of our combined experiences working on Western Hemisphere avian migration systems to highlight recent lessons and critical gaps in knowledge. Among topics discussed are: (1) The pipeline from pure to applied researchers leaves room for improvement. (2) Population limitation and regulation includes both seasonal and between-season interactions. (3) The study of movements of small-bodied species remains a major research frontier. (4) We must increase our understanding of population connectivity. (5) With few exceptions, population regulation has barely been investigated. (6) We have increasingly integrated landscape configuration of habitats, large-scale habitat disturbances, and habitat quality impacts into models of seasonal and overall demographic success. (7) The post-breeding season (late summer for latitudinal migrants) is increasingly appreciated for its impacts on demography. (8) We recognize the diverse ways that avian brood parasites, nest predators, and food availability affect demography. (9) Source-sink and meta-population models help us understand migratory avian distributions among fragmented habitats. (10) Advances in modeling have improved estimates of annual survival and fecundity, but for few species. (11) Populations can be limited by ecological conditions in winter, but habitat needs are poorly known for most species at this time. (12) Migration tends to occupy broad spatial fronts that may change seasonally or when migrants cross major barriers. En route conditions can limit migrant populations; linking migration habitat quality indicators to fitness or population consequences presents a major challenge. (14) A variety of intra-tropical Neotropical migration patterns are recognizable, but almost nothing is known about these systems beyond descriptions of a few typical species' movements. (15) Global climate change scenarios predict range and phenology shifts of Neotropical migrant bird populations that must be considered in conservation plans. Future studies will depend on new technologies and the integration of modeling with sophisticated, large-spatial-scale measurement and parameter estimation; whether the pace of research and management involving migratory birds can match the growth of environmental threats remains to be seen.

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“…To date, most research investigating songbirds during the post-fledging period has taken place in temperate deciduous forests (e.g., Vega Rivera et al 1998, Pagen et al 2000, Marshall et al 2003, Vitz and Rodewald 2007. These studies suggest that individuals readily inhabit patches of regenerating clearcut land cover (Pagen et al 2000, Marshall et al 2003, Vitz and Rodewald 2007, likely owing to the relative availability of both food and shelter (Anders et al 1998, Vega Rivera et al 1998.…”

Section: Introductionmentioning

confidence: 99%

“…These studies suggest that individuals readily inhabit patches of regenerating clearcut land cover (Pagen et al 2000, Marshall et al 2003, Vitz and Rodewald 2007, likely owing to the relative availability of both food and shelter (Anders et al 1998, Vega Rivera et al 1998. However, given lower soil productivity and rates of succession at more northern latitudes, we might not expect to observe similar patterns in the boreal forest.…”

Section: Introductionmentioning

confidence: 99%

Movement of Juvenile Songbirds in Harvested Boreal Forest: Assessing Residency Time and Landscape Connectivity

Mitchell¹,

Warkentin²,

Taylor³

2009

ACE

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ABSTRACT. Little is known about juvenile songbird movement in response to timber harvest, particularly in the boreal forest. If clearcut land cover facilitates movement, the availability of resources may increase. However, if clearcut land cover impedes movement, important post-fledging resources may be rendered inaccessible. Using radio telemetry, we tested the hypothesis that regenerating clearcut land cover would affect the movement of recently independent Yellow-rumped Myrtle Warblers (Dendroica coronata coronata) and Blackpoll Warblers (Dendroica striata) differently than forested land cover owing to intrinsic differences in each land-cover type or in how they are perceived. We found that both species moved extensively before migration. We also found that Blackpoll Warblers were quick to exit local areas composed of clearcut land cover and that both species were quick to exit neighborhoods composed of large proportions of clearcut land cover. However, if individuals encountered clearcut land cover when exiting the neighborhood, movement rate was slowed. Effectively, residency time decreased in clearcut neighborhoods and landscape connectivity was impeded by clearcut land cover. Our results suggest that clearcut land cover may represent low-quality habitat for both species during the post-fledging period. Further research is needed to determine if changes in movement behavior associated with landscape structure affect individual condition and higher-level ecological processes.RÉSUMÉ. On connait peu de choses en ce qui concerne le déplacement des jeunes passereaux suite à la récolte forestière, particulièrement en forêt boréale. Dans le cas où un parterre de coupe à blanc favorise les déplacements, l'accessibilité aux ressources peut augmenter. Toutefois, si le parterre de coupe à blanc nuit aux déplacements, des ressources importantes après l'envol pourraient devenir inaccessibles. À l'aide de la radio-télémétrie, nous avons testé l'hypothèse selon laquelle l'effet d'un parterre de coupe à blanc en régénération est différent de celui d'un couvert forestier sur le déplacement de Parulines à croupion jaune (Dendroica coronata coronata) et de Parulines rayées (Dendroica striata) ayant tout juste acquis leur indépendance, à cause des différences intrinsèques relatives à chaque type de couvert ou de la perception qu'en ont les oiseaux. Nous avons trouvé que les deux espèces de paruline se déplacent considérablement avant la migration. Nous avons également constaté que la Paruline rayée quittait rapidement les secteurs locaux constitués de parterres de coupe à blanc et que les deux espèces quittaient rapidement les secteurs voisins qui comportaient une grande proportion de parterre de coupe à blanc. Cependant, si un individu atteignait un parterre de coupe à blanc au moment de quitter le voisinage, son taux de déplacement était ralenti. Dans les faits, le temps de passage diminuait dans le voisinage des parterres de coupe à blanc et ces derniers réduisaient la connectivité du paysage. Nos résultats donnent à pense...

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Use of regenerating clearcuts by late-successional bird species and their young during the post-fledging period

Cited by 91 publications

References 31 publications

Conserving migratory land birds in the New World: Do we know enough?

Conserving migratory land birds in the New World: Do we know enough?

Recent advances in understanding migration systems of New World land birds

Movement of Juvenile Songbirds in Harvested Boreal Forest: Assessing Residency Time and Landscape Connectivity

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