Sociality and Foraging Behavior of the Cerulean Warbler in Venezuelan Shade-Coffee Plantations

Jones, Jason; Ramoni‐Perazzi, Paolo; Carruthers, Erin H.; Robertson, Raleigh J.

doi:10.1650/0010-5422(2000)102[0958:safbot]2.0.co;2

Cited by 21 publications

(19 citation statements)

References 17 publications

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“…For example, if males and female Cerulean Warblers segregate habitat vertically, as suggested by our data, then tall canopies may provide more opportunity for coexistence than low stature forest. Interestingly, the sexual segregation of habitat that we observed differs from a study on the eastern slopes of Venezuela, where males and females appeared to forage at similar heights (Jones et al 2000). Density of understory vegetation, which consisted of coffee plants, saplings, and shrubs (e.g., A. arborescens) also was positively related to birds that forage in the upper canopy, though canopy openness and understory vegetation density are frequently correlated.…”

Section: Discussioncontrasting

confidence: 84%

“…trees have higher bird species richness and abundance (Parrish and Petit 1996;Greenberg et al 1997b;Johnson 2000;Johnson and Sherry 2001) than plantations lacking these tree species. Although Cerulean Warblers have been reported foraging on Erythrina flowers (Jones et al 2000) neither our study nor a similar effort in Colombia (G. Colorado pers. comm.)…”

Section: Discussionmentioning

confidence: 70%

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Migratory bird use of shade coffee: the role of structural and floristic features

et al. 2011

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Shade coffee plantations support high numbers of Neotropical migratory birds, but relatively little is known about the structural and floristic attributes used by individual species. From 2005 to 2007, we studied the relationship between habitat characteristics and Neotropical migratory birds in shade coffee plantations in the Venezuelan Andes.Our results indicate that density of migrants was significantly related to both structural and floristic attributes of coffee farms. Specifically, upper canopy foragers were positively associated with number of large trees ([38 cm dbh), tree canopy height, and understory vegetation density. Low canopy and ground foragers were positively associated with numbers of small (8-23 cm dbh) and medium (23-38 cm dbh) trees and increased shade cover. Moreover, certain tree species, especially Inga spp., Erythrina spp. and Acnistus arborescens, were important components of habitat for those species that forage in the canopy. For example, our detailed foraging observations showed that Inga trees were used in greater proportion than available throughout plantations by Cerulean Warblers (Dendroica cerulea), a species of high conservation concern. Overall, our research suggests that suitability of coffee plantations for migratory birds may be improved by managing for particular structural and floristic characteristics of plantations.

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Section: Discussioncontrasting

confidence: 84%

Section: Discussionmentioning

confidence: 70%

Migratory bird use of shade coffee: the role of structural and floristic features

et al. 2011

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“…Shade-coffee is widely regarded as a migratory bird-friendly agroecosystem (Jones et al 2000, Wunderle and Latta 2000, BirdLife International 2006, Bakermans et al 2009, Jha et al 2014. However, few studies have directly compared migrant richness and density between shade coffee and natural forest in winter (Bakermans et al 2009) and less so during stopover (but see Gómez et al 2013).…”

mentioning

confidence: 99%

Distribution of Nearctic-Neotropical migratory birds along a South American elevation gradient during spring migration

Gómez

Bayly

2015

The Wilson Journal of Ornithology

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“…Many have documented changes in resource use, foraging behavior, and roost selection based on differences in availability and stability of fruit and floral resources (Carlo et al 2004, Peters & Nibbelink 2011, Bakermans et al 2012, epiphytes (Cruz-Angón et al 2008), and distance to forest fragments (Luck & Daily 2003, Jirinec et al 2011). Coffee farms have been used as laboratories for understanding how sex and age influence bird foraging behavior ( Jones et al 2000) and how foraging strata influence infestation of birds by mite parasites (Dietsch 2008). Furthermore, coffee agroforests have been used to examine differences in foraging behavior in solitary foragers versus members of mixed-species flocks and to test whether flock-related foraging shifts differ with habitat type (Latta & Wunderle 1996, Pomara et al 2003.…”

Section: Competition and Foraging In Bird Assemblagesmentioning

confidence: 99%

Complex Ecological Interactions in the Coffee Agroecosystem

Perfecto

Vandermeer

Philpott

2014

Annu. Rev. Ecol. Evol. Syst.

111

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Coffee agroecosystems have become iconic in the study of how agriculture can contribute to the conservation of biodiversity and how biodiversity can deliver ecosystem services to agriculture. However, coffee farms are also excellent model systems for ecological research. Throughout the tropics coffee farms are cultivated using varying numbers and diversity of shade trees, representing a gradient of diversity and complexity, ranging from forest-like "shade coffee" to intensified shadeless "sun coffee." Here we synthesize ecological research in the coffee agroecosystem focusing on four topics that have received considerable recent attention: (a) trophic interactions (especially vertebrates and ants as predators), (b) trait-mediated indirect interactions, (c) competition and community assembly (mainly birds and ants), and (d ) spatial constraints on interactions.

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Sociality and Foraging Behavior of the Cerulean Warbler in Venezuelan Shade-Coffee Plantations

Cited by 21 publications

References 17 publications

Migratory bird use of shade coffee: the role of structural and floristic features

Migratory bird use of shade coffee: the role of structural and floristic features

Distribution of Nearctic-Neotropical migratory birds along a South American elevation gradient during spring migration

Complex Ecological Interactions in the Coffee Agroecosystem

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