Distribution and abundance of nearctic–neotropical songbird migrants in a forest restoration site in southern Costa Rica

Reid, J. Leighton; Harris, J. Berton C.; Martin, Laura J.; Barnett, Jacob R.; Zahawi, Rakan A.

doi:10.1017/s0266467408005415

Cited by 10 publications

(13 citation statements)

References 22 publications

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“…Additional research demonstrated that mixed-species tree plantations both attracted seed dispersers and improved conditions for seed germination and seedling survival [35]–[40]. Seed dispersal trends were driven by small omnivores [41], [42], and the effects of tree planting varied by feeding guild [24], [26], [43] and habitat associations [44], [45].…”

Section: Introductionmentioning

confidence: 99%

Landscape Context Mediates Avian Habitat Choice in Tropical Forest Restoration

et al. 2014

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Birds both promote and prosper from forest restoration. The ecosystem functions birds perform can increase the pace of forest regeneration and, correspondingly, increase the available habitat for birds and other forest-dependent species. The aim of this study was to learn how tropical forest restoration treatments interact with landscape tree cover to affect the structure and composition of a diverse bird assemblage. We sampled bird communities over two years in 13 restoration sites and two old-growth forests in southern Costa Rica. Restoration sites were established on degraded farmlands in a variety of landscape contexts, and each included a 0.25-ha plantation, island treatment (trees planted in patches), and unplanted control. We analyzed four attributes of bird communities including frugivore abundance, nectarivore abundance, migrant insectivore richness, and compositional similarity of bird communities in restoration plots to bird communities in old-growth forests. All four bird community variables were greater in plantations and/or islands than in control treatments. Frugivore and nectarivore abundance decreased with increasing tree cover in the landscape surrounding restoration plots, whereas compositional similarity to old-growth forests was greatest in plantations embedded in landscapes with high tree cover. Migrant insectivore richness was unaffected by landscape tree cover. Our results agree with previous studies showing that increasing levels of investment in active restoration are positively related to bird richness and abundance, but differences in the effects of landscape tree cover on foraging guilds and community composition suggest that trade-offs between biodiversity conservation and bird-mediated ecosystem functioning may be important for prioritizing restoration sites.

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Section: Introductionmentioning

confidence: 99%

Landscape Context Mediates Avian Habitat Choice in Tropical Forest Restoration

et al. 2014

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“…We may infer that scale-dependent processes (forest patches at the local scale, and movements through the landscape at the regional scale) should be interconnected and interdependent in order to conserve and increase forest areas. Recent studies have highlighted the importance of migratory species for the forest-restoration process (Leighton Reid et al 2008;Lindell et al 2012, among others).…”

Section: Introductionmentioning

confidence: 99%

The Potential Role of Migratory Birds in the Expansion of Araucaria Forest

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et al. 2012

Nat. Conserv.

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The present study assessed the variation in bird species composition, and in the proportion of frugivorous and migratory individuals between areas of continuous forest and patches of Araucaria forests in natural grassland areas of southern Brazil. In the grassland-forest mosaic, 703 individuals of 83 bird species were recorded. The proportion of frugivorous and migratory individuals was significantly higher in forest patches and in the interior of continuous forest, compared to forest edges. We suggest that migratory birds are important for the dispersal of seeds from forest interiors to forest patches within the grassland, highlighting the importance of regional processes for the maintenance of local processes, for ecosystem conservation.

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“…2009) and foraging behavior (Morrison et al . 2010, Morrison & Lindell 2011), but few tropical studies have assessed bird habitat preference at a community level across different restoration treatments (reviewed by Ruiz‐Jaen & Aide 2005, Aerts et al . 2008, Lindell 2008, Reid et al .…”

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“…We found no significant correlations between these structural variables (Spearman's ρ , α =0.05). While distance to old growth forest has been an important explanatory variable for bird community assemblage in some studies ( e.g ., Neilan et al . 2006, Reid et al .…”

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“…Whereas composition denotes what ecosystem functions may be provisioned, relative abundance may be a good predictor of the magnitude of those functions (e.g., total number of seeds dispersed; Pejchar et al 2008). Several studies have documented the effects of tropical forest restoration on bird visitation (Holl 1998, Zahawi & Augspurger 2006, Fink et al 2009) and foraging behavior (Morrison et al 2010, Morrison & Lindell 2011, but few tropical studies have assessed bird habitat preference at a community level across different restoration treatments (reviewed by Ruiz-Jaen & Aide 2005, Aerts et al 2008, Lindell 2008, Reid et al 2008.…”

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Avian Habitat Preference in Tropical Forest Restoration in Southern Costa Rica

2011

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An important question for tropical forest restoration is whether degraded lands can be actively managed to attract birds. We censused birds and measured vegetation structure at 27 stations in young (6–9‐yr old) actively and passively restored pasture and old growth forest at Las Cruces Biological Station in southern Costa Rica. During 481 10‐min point counts, we detected a high diversity—186 species—of birds using the restoration area. Surprisingly, species richness and detection frequency did not differ among habitats, and proportional similarity of bird assemblages to old growth forest did not differ between restoration treatments. Bird detection frequency was instead explained by exotic grass cover and understory stem density—vegetation structures that were not strongly impacted by active restoration. The similarity of bird assemblages in actively and passively restored forest may be attributed to differential habitat preferences within and among feeding guilds, low structural contrast between treatments, or the effect of nucleation from actively restored plots into passively restored areas. Rapid recovery of vegetation in this recently restored site is likely due to its proximity to old growth forest and the lack of barriers to effective seed dispersal. Previous restoration studies in highly binary environments (i.e., open pasture vs. tree plantation) have found strong differences in bird abundance and richness. Our data contradict this trend, and suggest that tropical restoration ecologists should carefully consider: (1) when the benefits of active restoration outweigh the cost of implementation; and (2) which avian guilds should be used to measure restoration success given differential responses to habitat structure.

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Distribution and abundance of nearctic–neotropical songbird migrants in a forest restoration site in southern Costa Rica

Cited by 10 publications

References 22 publications

Landscape Context Mediates Avian Habitat Choice in Tropical Forest Restoration

Landscape Context Mediates Avian Habitat Choice in Tropical Forest Restoration

The Potential Role of Migratory Birds in the Expansion of Araucaria Forest

Avian Habitat Preference in Tropical Forest Restoration in Southern Costa Rica

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