Generating best management practices for Avian conservation with a land-sparing agricultural system

Ritterson, Jeffrey D.; King, David I.; Raudales, Raul; Trubey, Richard; Chandler, Richard B.

doi:10.1007/s10457-020-00582-7

Cited by 5 publications

(4 citation statements)

References 46 publications

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“…Marra and Holmes (2001) reported that lower juvenile American redstart Setophaga ruticilla survival could be caused by juveniles being disproportionately displaced into suboptimal habitat. However, the distribution of juveniles among habitats at our sites was similar to that of adults (Ritterson 2015). We also found no difference in among season survival between age classes.…”

Section: Discussionsupporting

confidence: 60%

Habitat‐specific survival of golden‐winged warblers Vermivora chrysoptera during the non‐breeding season in an agricultural landscape

Ritterson

King

Chandler

2021

Journal of Avian Biology

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Nearctic-Neotropical migratory birds are considered priority species for conservation because they are subject to threats at distinct breeding, migratory and stopover locations throughout their annual cycle, and many species have undergone severe population declines. Research during the non-breeding season has focused on identifying the locations and habitats that migrants use, but wintering migrants are known to occupy habitats of both high and low quality, especially when the best sites are saturated by conspecifics. Thus, the presence or abundance of a species may not be a reliable indicator of winter habitat quality. The habitat associations of the golden-winged warbler Vermivora chrysoptera, a Nearctic-Neotropical migrant bird species of elevated conservation concern, are relatively well studied, yet conservation efforts are hindered by lack of information about basic demographic rates. In particular, no published estimates exist for non-breeding season survival, which can be a key vital rate affecting population viability, nor how survival rates vary among habitats, which is important to designing conservation programs to support populations during the winter period. We studied a color-banded population of golden-winged warblers in Costa Rica over a three-year period and estimated overall survival rates, and the effects of habitat characteristics on survival. We found that monthly survival of juveniles (0.881) was lower than adult birds (0.978). Monthly survival during the non-breeding season (0.967) was higher than monthly survival during the rest of the annual cycle (0.930). Survival was negatively related to canopy height, and we observed a significant quadratic effect where survival peaked at intermediate levels of vine tangles and dead hanging leaves, which corresponds to habitat features associated with abundance in prior studies at this same site. Our findings contribute to our existing knowledge about the potential impacts of winter-season events on Nearctic-Neotropical migratory bird populations, and also informs potential conservation strategies for wintering golden-winged warblers.

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Section: Discussionsupporting

confidence: 60%

Habitat‐specific survival of golden‐winged warblers Vermivora chrysoptera during the non‐breeding season in an agricultural landscape

Ritterson

King

Chandler

2021

Journal of Avian Biology

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“…Proponemos que en el caso de las fincas DAI, al presentar una zona boscosa, tanto el sotobosque como el dosel no se ven alterados y por ende pueden albergar diferentes especies de aves dependientes de bosque. Además, los si?os DAIB que estudiamos presentaron mayor área que el tamaño umbral (2.6 ha) que se ha propuesto para sustentar la mayoría de las aves dependientes de bosque (Ri(erson et al 2021).…”

Section: Discussionunclassified

“…Dicho agroecosistema se implementó en Honduras en el departamento de Yoro, en fincas afiliadas a la Coopera?va COMYSUIL con el apoyo del MDI (2020). El agroecosistema DAI ha sido reconocido como una alterna?va de conservación para las aves (Chandler et al 2013, Ri(erson et al 2021. En Costa Rica se determinó que los cul?vos DAI presentan una mayor riqueza de especies de aves dependientes de bosque que los cul?vos sombra (Chandler et al 2013).…”

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Dosel Abierto Integrado (Dai) en Cultivos De Café Coffea Arabica Como Herramienta De Conservación De Aves Migratorias Neártico-Neotropicales Y Aves Residentes en Yoro, Honduras

Murillo,

Alvarado,

Vásquez

et al. 2023

Ornitol. Neotrop.

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Honduras cuenta con 349,510 hectáreas cultivadas con café Coffea arabica, que son en su mayoría cultivos tradicionales (café sombra y café sol), y en menor escala cultivos con sistema Dosel Abierto Integrado (DAI). El sistema de café DAI consiste en plantaciones de café rodeadas por bosque en una proporción ≥ 1:1, lo que permite la preservación y la restauración de ecosistemas nativos. El objetivo de nuestra investigación fue evaluar el sistema DAI en cultivos de café como una alternativa de conservación para las aves migratorias neártico-neotropicales y aves residentes. Evaluamos características ecológicas, como la riqueza y abundancia de especies, entre los meses de noviembre de 2018 a abril de 2019. Establecimos 75 puntos de conteo de radio fijo en una zona cafetalera del departamento de Yoro, Honduras. Estadísticamente no registramos diferencias significativas en la riqueza de aves migratorias entre los sistemas de bosque, café DAI y cultivos de café tradicionales. Sin embargo, la riqueza de especies dependientes de bosque fue mayor en los sistema bosque y cultivos de café DAI que en cultivos tradicionales. Además, algunas especies dependientes de bosque, como Myioborus miniatus y Mionectes oleagineus, fueron más abundantes (P < 0.05) en bosque y cultivos de café DAI que en cultivos de café tradicionales. Nuestros resultados se suman a los reportados en Costa Rica, en donde se introdujo este agroecosistema de cultivo de café, en los que se indica que el café DAI puede ser una alternativa para la conservación de aves migratorias y residentes, en particular para especies dependientes de bosque.

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“…These findings reflect the potential of "land-sharing" and hybrid sharing-sparing conservation strategies (which encourage both forest conservation as well as agroforestry practices) to conserve bird communities in working landscapes. In land-sharing coffee systems, native shade trees are retained within coffee agriculture and where forest patches may be conserved along with shade coffee in the agricultural matrix (Chandler et al 2013, Sánchez-Clavijo et al 2020, Valente et al 2022, Ritterson et al 2021b). In the absence of habitat-specific survival, however, these habitat associations should be considered a first-order indication of habitat quality, since other migratory species (e.g., Wood Thrush) select shade coffee over native forest, yet their site persistence and survival are negatively associated with its use (Bailey and King 2019).…”

Section: Conservation Implicationsmentioning

confidence: 99%

Habitat associations of Golden-winged Warblers and Blue-winged Warblers during the non-breeding season

King¹,

Akresh²,

Murillo³

et al. 2023

ACE

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The Golden-winged Warbler (Vermivora chyrsoptera) and Blue-winged Warbler (Vermivora cyanoptera) are both Neotropical migratory species of elevated conservation concern that overlap in distribution on their Central American wintering grounds, yet the extent to which they overlap in terms of habitat use is unknown, potentially hindering conservation efforts. We surveyed these two species along habitat and elevational gradients within a coffee-growing landscape during 2016 and 2017 in Yoro, Honduras. We used playback with a mobbing track known to enhance detections of female warblers, since examining sexual habitat segregation was another objective of our study. Habitat occupied by these two species differed, with male Golden-winged Warblers occurring in landscapes dominated by humid forest/coffee (forest with some dense shade coffee, which were indistinguishable with remote sensing at our sites) at higher elevations than male Blue-winged Warblers, which were positively associated with the amount of agriculture in the landscape. Six of seven female Golden-winged Warblers were encountered in shade coffee, however, this association was not significant, likely due to small sample size and low detectability. The association between male Golden-winged Warblers and humid forest/coffee and elevation, and contrasts in habitat use between male and female Golden-winged Warblers, are consistent with prior research in the region. Furthermore, the landscape associations of these non-breeding Vermivora species mirror their breeding landscape associations, with Golden-winged Warblers occupying more forested landscapes and Blue-winged Warblers occupying more agricultural landscapes. The use of shade coffee by female Golden-winged Warblers and Blue-winged Warblers suggests agroforestry could be a promising tool for conserving wintering populations of these species, although this result should be viewed with caution given that use of shade coffee is reported to elevate predation risk in other migratory species, and may not provide habitat for forest-dependent resident birds.

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Generating best management practices for Avian conservation with a land-sparing agricultural system

Cited by 5 publications

References 46 publications

Habitat‐specific survival of golden‐winged warblers Vermivora chrysoptera during the non‐breeding season in an agricultural landscape

Habitat‐specific survival of golden‐winged warblers Vermivora chrysoptera during the non‐breeding season in an agricultural landscape

Dosel Abierto Integrado (Dai) en Cultivos De Café Coffea Arabica Como Herramienta De Conservación De Aves Migratorias Neártico-Neotropicales Y Aves Residentes en Yoro, Honduras

Habitat associations of Golden-winged Warblers and Blue-winged Warblers during the non-breeding season

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