Seed rain generated by bats under Cerrado’s pasture remnant trees in a Neotropical savanna

Ragusa-Netto, J.; Santos, Angelo Alberto Pacheco dos

doi:10.1590/1519-6984.22813

Cited by 5 publications

(10 citation statements)

References 63 publications

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“…This may be of concern as the complex interactions involving primary dispersion of large-seeded trees, their secondary dispersers and seed predators is a key step for devising strategies to conserve ecological processes, which are essential for maintaining biodiversity in fragmented landscapes (Silva and Tabarelli, 2000;Cramer et al, 2007;Costa et al, 2012). This is one few studies comparing the secondary removal of bat dispersed seeds in anthropized habitats of Cerrado (see: Ragusa-Netto and Santos, 2015;Wolf, 2015), one of the most endangered biomes in the world. Due to the accelerated Cerrado loss, knowledge concerning regeneration sources in disturbed Cerrado areas may provide useful information to improve strategies for Cerrado management and conservation in view of the increasing over representation of Cerrado edge habitats (Carvalho et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…In these periods those endocarps were often deposited by bats under feeding roosts (Ragusa-Netto and Santos, 2015), while general fruiting pattern highly vary in the dense Cerrado (Ragusa-Netto, 2006). In each habitat type one 1500-m transect was delimited: the edge transect, at 5-10 m from the Cerrado boundary, and the interior transect, 400 m away from the edge.…”

Section: Experimental Designmentioning

confidence: 99%

“…In the tropical vegetation frugivorous bats often use feeding roost either in the interior or edge of Neotropical forest remnants (Arteaga et al, 2006). This also occurs in the fragmented Cerrado (Neotropical savanna; Ribeiro and Walter, 1998), so that under feeding roosts a gradient of seed densities may be generated (Ragusa-Netto and Santos, 2015). Therefore, one may expect differences in the chances of seed survival according to seed densities (Harms et al, 2000;Terborgh, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Seed removal of Dipteryx alata Vog. (Leguminosae: Faboidae) in the edge and interior of Cerrado

Ragusa-Netto

2017

Braz. J. Biol.

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Post-dispersal seed agents of mortality include pathogens, invertebrates, and vertebrates, which may shape tropical tree populations and communities. In this study I experimentally evaluated Dipteryx alata endocarp removal both in the interior and edge of Cerrado vegetation. Specifically, I simulated primary dispersion of endocarps by bats and evaluated secondary removal intensity according to habitat, season, and endocarp number. This study was developed in the Pombo Natural Municipal Park, a large Cerrado remnant with an area of 9,000 ha, located in the Western Brazil. In each of the two habitat types, I set down 45 points in which D. alata piles of 1, 3, 7, 15, and 40 endocarps were positioned. On average, endocarp removal in the interior was higher than in the edge, so that the intensity of removal varied from positive density-dependent (interior: rains), to negative density-dependent (edge: both seasons). Also, at both habitat types and seasons non removed endocarps were intensely attacked by fungus. Indeed, seed mortality by fungus infestation was positive density-dependent. The results indicate high propensity of endocarps to escape from removal in the edge, in principle, a defaunated area. As Dipteryx species strongly rely on caviomorph rodents for their dispersal, the scarcity of these vectors might reduce recruitment chances of D. alata in remnants of Cerrado. This imply in future changes in the vegetation structure from the edge to the interior towards low tree diversity.Keywords: seed predation, seed dispersal, plant-animal interaction, density-dependence, Cerrado fragment, vegetation edge. Remoção de sementes de

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Section: Discussionmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seed removal of Dipteryx alata Vog. (Leguminosae: Faboidae) in the edge and interior of Cerrado

Ragusa-Netto

2017

Braz. J. Biol.

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“…In fragmented landscapes, forest fragments provide havens for many forest species and potential seeds for reforestation [101][102][103]. The proximity of forest fragments close to the reforestation sites facilitates the colonization process of these areas by local species since the majority of non-implanted species will depend on neighboring sources through the dissemination of seeds [104][105][106]. Factors linked to biological flows, such as seed dispersal, interfere with the dynamics of the reforestation process to contribute to the forest system sustainability to be installed [104,105,[107][108][109][110].…”

mentioning

confidence: 99%

“…Factors linked to biological flows, such as seed dispersal, interfere with the dynamics of the reforestation process to contribute to the forest system sustainability to be installed [104,105,[107][108][109][110]. Besides, the distance of seed dispersal has a significant influence on the persistence of species in forest fragments [111], on the vegetation recovery in altered areas [112] and on the migration of vegetation through landscapes fragmented in response to climate change [105,106,113,114]. Thus, the less vulnerable a forest fragment is, the more significant its contribution to reforestation success.…”

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confidence: 99%

Improving Water Sustainability through Modeling Optimum Sites for Riparian Forest Reforestation

Torres

Neto

Santos

et al. 2020

Water

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The margins of Brazilian rivers are considered Permanent Preservation Areas—APPs, due to the riparian forest’s water resource preservation capacity. However, a significant portion of the Brazilian Atlantic Forest biome, in which the Jacaré River basin is located, has suffered increasing deforestation over the past decades. This research aimed to use a methodology integrating Geographic Information System (GIS), fuzzy logic, Analytic Hierarchy Process (AHP), and sensitivity analysis to model the selection of riparian protected area stretches that presents the best successful riparian forest reforestation using a real case, the Jacaré river basin, whose characteristics are often in Brazilian watersheds. To identify the main drivers that influence reforestation success, we carried out a broad and detailed bibliographic research. To establish the relative importance among the drivers, we conducted a survey with experts. The results showed that areas with moderate chances of reforestation prevail in the studied region. Due to the areas’ distribution pattern, a significant portion of the best sites were grouped, forming regions that create environments that favor aquatic and riverside life development and ecological balance maintenance, thus bringing together fundamental characteristics to improve water resources sustainability. The best sites have dystrophic or eutrophic soil, with a slope of up to 15%. Besides, they are mainly covered by grass and are close to forest fragments with low vulnerability.

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The role of feeding roosts in seed dispersal service bats provide in urban areas

da Silveira,

Silveira,

Medeiros

et al. 2024

Biotropica

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In urban ecosystems, bats play an essential role in seed dispersal, which is facilitated by their use of feeding roosts. However, there are several knowledge gaps in this ecosystem service that bats provide in urban areas. We aimed to describe the fruits consumed by bats in an urban area, the selection and use of feeding roosts, and the patterns of seed dispersal by fruit bats in a Brazilian city. We collected and identified the seeds deposited under feeding roosts and tested for differences in the size of the seed of fruits consumed by bats and the seeds of fruits available in the study area. We also captured and identified bats feeding near roosts using mist nets and assessed the vegetation structure and urban variables that might influence the bats' tree choice for roosts. We found that Artibeus lituratus, Artibeus planirostris, and Platyrrhinus lineatus potentially used feeding roosts and preferred the tallest trees, which were located further away from artificial light. The average distance of seed dispersal was 105.5 meters, and the average size of the dispersed seeds did not differ from the seeds of the fruits available in the area, suggesting that bats are not limited to dispersing only tiny seeds. However, the prevalence of exotic seeds raises concerns that bats may spread exotic species, especially in surrounding protected areas. These results highlight the importance of frugivorous bats as significant seed dispersers in urban areas and emphasize the need for further research to understand their role in shaping urban ecosystems.Abstract in Portuguese is available with online material.

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Seed rain generated by bats under Cerrado’s pasture remnant trees in a Neotropical savanna

Cited by 5 publications

References 63 publications

Seed removal of Dipteryx alata Vog. (Leguminosae: Faboidae) in the edge and interior of Cerrado

Seed removal of Dipteryx alata Vog. (Leguminosae: Faboidae) in the edge and interior of Cerrado

Improving Water Sustainability through Modeling Optimum Sites for Riparian Forest Reforestation

The role of feeding roosts in seed dispersal service bats provide in urban areas

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