scholarly journals Deciphering seed dispersal decisions: Size, not tannin content, drives seed fate and survival in a tropical forest

Ecosphere ◽  
2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Erin K. Kuprewicz ◽  
Carlos García‐Robledo
Keyword(s):  
Seed Dispersal ◽  
Tropical Forest ◽  
Seed Fate ◽  
Tannin Content

scholarly journals Habitat fragmentation narrows the distribution of avian functional traits associated with seed dispersal in tropical forest

2018 ◽  
Vol 16 (2) ◽  
pp. 90-96 ◽  
Author(s):  
Alex A.A. Bovo ◽  
Katia M.P.M.B. Ferraz ◽  
Marcelo Magioli ◽  
Eduardo R. Alexandrino ◽  
Érica Hasui ◽  
...  
Keyword(s):  
Habitat Fragmentation ◽  
Seed Dispersal ◽  
Tropical Forest ◽  
Functional Traits

The role of great apes in seed dispersal of the tropical forest tree species Dacryodes normandii (Burseraceae) in Gabon

2015 ◽  
Vol 31 (5) ◽  
pp. 395-402 ◽  
Author(s):  
Barbara Haurez ◽  
Kasso Daïnou ◽  
Nikki Tagg ◽  
Charles-Albert Petre ◽  
Jean-Louis Doucet
Keyword(s):  
Seed Dispersal ◽  
Tropical Forest ◽  
Tree Species ◽  
Central Africa ◽  
Great Apes ◽  
Forest Tree ◽  
Sampling Effort ◽  
Predator Species ◽  
High Germination ◽  
Visit Duration

Abstract:The identification of seed dispersers and predators is essential to understand the effect of anthropogenic disturbances, and the associated defaunation process, on tropical forest dynamics in Central Africa. In this study, the animals involved in seed predation and dispersal of Dacryodes normandii (Burseraceae), an endozoochorously dispersed tree species endemic to Gabonese forests, were identified in a site in south-east Gabon using two complementary methods: direct observation and camera-trap monitoring of fruit piles. The combined sampling effort (172 h of direct observations and 796 d of camera trapping) led to the identification of six disperser and eight predator species of D. normandii seeds. With high frequency of consumption (88% and 57% of their visits, respectively) and long visit duration (83 and 23 min, respectively), the western lowland gorilla and central chimpanzee were identified as the main dispersers of this species. Seeds passed through the gorilla gut exhibited high germination success (68%). Rodents were identified as predators of D. normandii seeds, potentially displaying rare secondary dispersal through scatter-hoarding. The results of this study highlight the importance of great apes in the seed dispersal of this tree species.

Effect of rodents on seed fate of five hornbill-dispersed tree species in a tropical forest in north-east India

2009 ◽  
Vol 25 (5) ◽  
pp. 507-514 ◽  
Author(s):  
Nandini Velho ◽  
Aparajita Datta ◽  
Kavita Isvaran
Keyword(s):  
Tropical Forest ◽  
Tree Species ◽  
Camera Traps ◽  
Seed Fate ◽  
Seed Survival ◽  
North East India ◽  
North East ◽  
Wide Range ◽  
Dysoxylum Binectariferum ◽  
Seed Fates

Abstract:Hornbills are important dispersers of a wide range of tree species. Many of these species bear fruits with large, lipid-rich seeds that could attract terrestrial rodents. Rodents have multiple effects on seed fates, many of which remain poorly understood in the Palaeotropics. The role of terrestrial rodents was investigated by tracking seed fate of five hornbill-dispersed tree species in a tropical forest in north-east India. Seeds were marked inside and outside of exclosures below 6–12 parent fruiting trees (undispersed seed rain) and six hornbill nest trees (a post-dispersal site). Rodent visitors and seed removal were monitored using camera traps. Our findings suggest that several rodent species, especially two species of porcupine were major on-site seed predators. Scatter-hoarding was rare (1.4%). Seeds at hornbill nest trees had lower survival compared with parent fruiting trees, indicating that clumped dispersal by hornbills may not necessarily improve seed survival. Seed survival in the presence and absence of rodents varied with tree species. Some species (e.g. Polyalthia simiarum) showed no difference, others (e.g. Dysoxylum binectariferum) experienced up to a 64% decrease in survival in the presence of rodents. The differing magnitude of seed predation by rodents can have significant consequences at the seed establishment stage.

Tri-trophic interactions affect density dependence of seed fate in a tropical forest palm

2011 ◽  
Vol 14 (11) ◽  
pp. 1093-1100 ◽  
Author(s):  
Marco D. Visser ◽  
Helene C. Muller-Landau ◽  
S. Joseph Wright ◽  
Gemma Rutten ◽  
Patrick A. Jansen
Keyword(s):  
Tropical Forest ◽  
Density Dependence ◽  
Trophic Interactions ◽  
Seed Fate

Propagating framework tree species to restore seasonally dry tropical forest: implications of seasonal seed dispersal and dormancy

2002 ◽  
Vol 164 (1-3) ◽  
pp. 31-38 ◽  
Author(s):  
David Blakesley ◽  
Stephen Elliott ◽  
Cherdsak Kuarak ◽  
Puttipong Navakitbumrung ◽  
Sudarat Zangkum ◽  
...  
Keyword(s):  
Seed Dispersal ◽  
Tropical Forest ◽  
Tree Species ◽  
Seasonally Dry Tropical Forest ◽  
Dry Tropical Forest ◽  
Seasonally Dry

scholarly journals Seed dispersal agents of two Ficus species in a disturbed tropical forest

2003 ◽  
Vol 2 (2) ◽  
pp. 119-125 ◽  
Author(s):  
Kelvin S.-H. Peh ◽  
Fong Lin Chong
Keyword(s):  
Seed Dispersal ◽  
Tropical Forest ◽  
Dispersal Agents

Short-term post-dispersal fate of seeds defecated by two small primate species (Saguinus mystaxandSaguinus fuscicollis) in the Amazonian forest of Peru

2009 ◽  
Vol 25 (3) ◽  
pp. 229-238 ◽  
Author(s):  
Laurence Culot ◽  
Marie-Claude Huynen ◽  
Paul Gérard ◽  
Eckhard W. Heymann
Keyword(s):  
Seed Dispersal ◽  
Dung Beetle ◽  
Dung Beetles ◽  
Primate Species ◽  
Seed Fate ◽  
Short Term ◽  
Amazonian Forest ◽  
Saguinus Fuscicollis ◽  
High Quality Seed ◽  
Secondary Seed Dispersal

Abstract:Post-dispersal fate of seeds dispersed by large primates is well studied but little is known about this process in small frugivores like tamarins. This study in the Amazonian forest of Peru aimed at investigating if characteristics related to the defecation patterns of tamarins (Saguinus mystaxandSaguinus fuscicollis) affected short-term post-dispersal seed fate, through secondary seed dispersal by dung beetles and removal by seed predators. Data on dung beetle activity were based on direct observations of 49 defecations while seed fate was studied using semi-controlled experiments (N = 458 for secondary dispersal and N = 398 for predation). Tamarins produce small defecations with a low number of seeds. Thirty-five per cent of defecations were visited by an average of 1.5 dung beetles that usually transport the faeces as pellets. Twenty-four per cent of seeds were buried by beetles at a mean depth of 3.5 cm. With increasing quantities of faecal matter, the probability of secondary seed dispersal increased but not the depth of burial. Seed predation pressure was low (17.6%) after 4 d and higher in faeces ofS. mystaxthan in faeces ofS. fuscicollis. Despite their small size, tamarins could be considered as high-quality seed dispersers, with a potential role for forest regeneration.

Interhabitat variation in diplochory: Seed dispersal effectiveness by birds and ants differs between tropical forest and savanna

2019 ◽  
Vol 38 ◽  
pp. 48-57 ◽  
Author(s):  
Paulo H.S.A. Camargo ◽  
Suelen B.M. Rodrigues ◽  
Augusto J. Piratelli ◽  
Paulo S. Oliveira ◽  
Alexander V. Christianini
Keyword(s):  
Seed Dispersal ◽  
Tropical Forest ◽  
Seed Dispersal Effectiveness ◽  
Dispersal Effectiveness

scholarly journals Animal seed dispersal and the diversity of tropical forest trees

2017 ◽  
Vol 114 (40) ◽  
pp. 10526-10527 ◽  
Author(s):  
Susan Harrison
Keyword(s):  
Seed Dispersal ◽  
Tropical Forest ◽  
Forest Trees
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