Effect of fragmentation on the Costa Rican dry forest avifauna

Barrantes, Gilbert; Ocampo, Diego; Ramírez-Fernández, José D.; Fuchs, Eric J.

doi:10.7717/peerj.2422

Cited by 13 publications

(14 citation statements)

References 52 publications

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“…Since urban vegetation patches are often patchy and isolated, the spatial context of the patches can influence on the biodiversity within them (Watling and Donnelly 2006 ). The survival and abundance of mammals might depend on numerous habitat variables, including habitat quality, connectivity, and distance between habitat patches (Lindenmayer and Possingham 1995 ; Umapathy and Kumar 2000 ; Chetkiewicz et al 2006 ; Barrantes et al 2016 ). Unfortunately, spatial context of the patches such as proximity, isolation, and isolation were not analyzed in this study.…”

Section: Discussionmentioning

confidence: 99%

“…Species richness and abundance typically decline as a result of habitat fragmentation, at least until populations adjust to the size of the habitat (de Castro and Fernandez 2004 ; Lee et al 2014 ). Moreover, micro- and macro-climatic changes increase in plant mortality, regeneration of vegetation, increase of predation risk, and invasion by other species often occur in response to habitat fragmentation (Umapathy and Kumar 2000 ; Barrantes et al 2016 ). In urban woods, these changes would be expected to influence mammal species and their habitats.…”

Section: Introductionmentioning

confidence: 99%

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Influence of vegetation area and edge length on mammals in urban woods

Lee

Rhim

2017

Animal Cells and Systems

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We investigated the relationships between vegetation area, edge length, and mammals in the urban woods of Daejeon Metropolitan City, South Korea. The vegetation patches included in this study varied from 2.1 to 501.0 ha in size. Surveys were conducted monthly between February and October 2015, with a survey route measuring 1 km in length and 10 m width established in each forest patch. Field signs of 14 species of mammals were recorded in the 33 chosen forest patches over the course of the study period, and the number of species in each patch varied from 2 to 11. Mammal species richness was positively correlated with vegetation area, and field sign frequency was positively correlated with vegetation area and negatively correlated with edge length. The field sign frequencies of large moles Mogera robusta, Siberian chipmunks Tamias sibiricus, leopard cats Prionailurus bengalensis, Korean hares Lepus coreanus, water deer Hydropotes inermis, and wild boars Sus scrofa were positively correlated with vegetation area. Moreover, that of large moles, leopard cats, Korean hares, and water deer were negatively correlated with edge length. Remnant vegetation area and edge length are the primary determinants of mammal species richness and field sign frequency in urban woods, highlighting the importance of vegetation patch size for mammal conservation in fragmented urban landscapes.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of vegetation area and edge length on mammals in urban woods

Lee

Rhim

2017

Animal Cells and Systems

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“…This limits our understanding of important biological processes such as dispersal movement, reproductive success, and effects of isolation, particularly for specialist species. However, the extensive knowledge of forest fragments provides some insights to the approach that should be taken to avoid or at least reduce the depletion of species from the already threatened urban successional habitats (Barrantes, Ocampo, Ramírez-Fernández, & Fuchs, 2016). A priority in this direction will be to protect natural and semi-natural early successional vegetation, and enhance their connectivity.…”

Section: Final Remarksmentioning

confidence: 99%

The forgotten habitats in conservation: early successional vegetation

Sandoval

Morales

Ramírez-Fernández

et al. 2019

RBT

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Conservation efforts in terrestrial environments have focused on preserving patches of natural habitats and restoring disturbed habitats, with the main goal of transforming them into forests or habitats that resemble the original conditions. This approach tends to overlook the importance of conserving early successional vegetation (e.g., riverside vegetation, natural regeneration, young secondary forests), which often includes a large number of species (e.g., plants and animals) associated with or restricted to these habitats. In this paper we want to bring to attention the importance of preserving early successional vegetation, and to encourage scientists to investigate, e.g., the diversity, distribution, and species interactions occurring in these habitats. To address these goals, we focus on two main objectives: (1) to identify the common types of early successional vegetation in the Costa Rican Central Valley; and (2) to use some case studies to draw attention to the importance that such areas have as reservoirs of a large portion of the diversity unique to early successional stages. We first include an example to show the diversity of plants in small forest patches immersed in a large urbanized area. We provide general information on the insects that occur in early successional vegetation in urban areas, and in further detail examples of butterflies. Additionally, we provide examples of birds and mammals that are restricted to early successional vegetation, and how the reduction of this vegetation type affects species conservation. Finally, we encourage scientists to investigate these early successional habitats, particularly those species exclusive to early successional stages. Special attention should be paid to endemic species and those with a restricted distribution. Information of this type will make conservation of the diversity contained in these habitats possible.

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“…Forest fragmentation may lead to fluctuations in population size, operational sex ratios, reproductive success, effective population size, and population viability (Zimmerman and Bierregaard 1986, Caro 1998, Laurance et al 1998, 2011, Fahrig 2003, Fischer and Lindenmayer 2007). Investigators in previous studies have compared the species richness and abundance of forest fragments of different sizes and with different degrees of isolation (Bolger et al 1991, Sisk et al 1997, Peter et al 2015, Stratford and Stouffer 2015, Wolfe et al 2015, Aurélio‐Silva et al 2016, Barrantes et al 2016). However, changes in life‐history traits following habitat alteration suggest behavioral flexibility in fragmented landscapes mediated by individual movement, thus maintaining population viability for some species (Peacock and Smith 1997, Bayne and Hobson 2001, Newman et al 2013) and indicating the need to address mechanisms of behavioral regulation in altered landscapes.…”

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confidence: 99%

Effects of forest fragmentation on the lekking behavior of White‐throated Manakins in Central Amazonia

Tolentino

Anciães

2020

J. Field Ornithol.

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Forest fragmentation can affect various aspects of population dynamics, but few investigators have assessed possible effects on the behavior of a species. Loss of habitat may limit population recruitment and abundance, which may alter breeding dynamics in forest remnants. We examined the lekking behavior of White‐throated Manakins (Corapipo gutturalis) in a fragmented landscape to determine if forest fragmentation affected the spatial distribution of display courts and male behavior at courts. We captured and observed males at 19 courts located in 11 primary forests of different sizes in forest habitats of the Biological Dynamics of Forest Fragments Project area, an experimentally fragmented landscape located in the central Brazilian Amazon, and estimated their spatial distribution as the distance to the nearest court in the landscape. We quantified habitat loss using the proportion of forest cover surrounding courts and their distances to forest edges. No courts were detected in 1‐ha forest fragments, suggesting direct effects from habitat loss following fragmentation that affected connectivity and thus recruitment and persistence of courts in the smallest fragments. The spatial distribution of display courts in forests larger than 10 ha remained unaltered, compared to display courts in continuous forests, but adult males were less numerous on courts with a higher percentage of forest cover and they displayed less on courts closer to forest edges. The spatial distribution of courts also contributed to variation in male social behavior, with more juvenile males present and adult males displaying at lower rates at more isolated courts. Although White‐throated Manakins are locally common, the observed behavioral changes in response to habitat loss may affect their population dynamics. Our results show the importance of assessing behavioral changes in conservation programs and, in particular, of including biologically relevant measures of habitat loss in addressing its possible effects on species persistence in fragmented landscapes.

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Effect of fragmentation on the Costa Rican dry forest avifauna

Cited by 13 publications

References 52 publications

Influence of vegetation area and edge length on mammals in urban woods

Influence of vegetation area and edge length on mammals in urban woods

The forgotten habitats in conservation: early successional vegetation

Effects of forest fragmentation on the lekking behavior of White‐throated Manakins in Central Amazonia

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