Seed predation in a human-modified tropical landscape

  title={Seed predation in a human-modified tropical landscape},
  author={Jenny Zambrano and Rosamond Coates and Henry Forbush Howe},
  journal={Journal of Tropical Ecology},
  pages={379 - 383}
Abstract: Contemporary defaunation of fragmented forests potentially alters patterns of seed predation and dispersal. Alternatively, the remaining fauna may compensate for missing animals, resulting in equivalent rates of seed dispersal and predation. In the Los Tuxtlas region of southern Mexico, populations of large terrestrial fruit-eating mammals are diminished or absent from many forest remnants. This study reports fruit removal and seed predation patterns of Poulsenia armata (Moraceae), in… Expand
3 Citations
Seed fates of four rainforest tree species in the fragmented forests of Anamalais in the southern Western Ghats, India
Invertebrate seed predation and seed removal by vertebrate seed predators had a weak relationship with forest type, with higher invertebrateseed predation in the fragments and higher seed removal in the benchmark forests. Expand
Combined effects of seed and soil quality drive seedling performance of a late-successional canopy tree in a tropical forest
The combined effects of maternal habitat and soil conditions determined seedling survival and growth of this tropical tree and Notably, seedlings had restricted plasticity for biomass allocation to roots, limiting the capacity of fragmented populations to compensate for the initial low N content in seeds. Expand
Loss of connectivity in a highly fragmented tropical landscape: use of ecological processes as functional indicators of biodiverity decline
Landscape modification has been increasing in the past few decades. In particular, the biodiversity of tropical rainforests has been threatened by an intensive loss of habitat and changes in land useExpand


Size-Related Differential Seed Predation in a Heavily Defaunated Neotropical Rain Forest
The observed contrasts in germination suggest that under heavy defaunation, small-seeded species are likely to be penalized by the overabundance of small rodents, while large-seeding species escape predation. Expand
Effects of forest fragmentation on the recruitment success of the tropical tree Poulsenia armata at Los Tuxtlas, Veracruz, Mexico
Abstract: Recruitment success of individual plants is limited by an array of biotic and abiotic factors. Seedling survival may experience high mortality due to negative density dependence or alteredExpand
Non flying mammals and landscape changes in the tropical rain forest region of Los Tuxtlas, Mexico
The rapid and extensive conversion of Neotropical rain forests to a landscape consisting of pasture lands and other agricultural habitats has meant the local disappearance fragmentation and isolationExpand
The absence of the two largest cats and the exclusion of poachers from BCI was associated with lower seedling herbivory and higher seed predation than observed on the mainland, and extreme mammal defaunation on the small and medium islands had large and consistent effects on seedling recruitment. Expand
Fruit eating and seed dispersal by howling monkeys (Alouatta palliata) in the tropical rain forest of Los Tuxtlas, Mexico
Howling monkeys created diverse seed shadows in the vicinity of their leaf and fruit sources, and while they dispersed the seeds of some plant species, they also produced a great deal of fruit and seed waste for others. Expand
Species loss in fragments of tropical rain forest: a review of the evidence.
A review of the literature shows that in nearly all cases tropical rain forest fragmentation has led to a local loss of species, with animals that are large, sparsely or patchily distributed, or very specialized and intolerant of the vegetation surrounding fragments, particularly prone to local extinction. Expand
Recruitment of hornbill-dispersed trees in hunted and logged forests of the Indian Eastern Himalaya.
  • P. Sethi, H. Howe
  • Biology, Medicine
  • Conservation biology : the journal of the Society for Conservation Biology
  • 2009
Results are consistent with the idea that disturbance disrupts mutualisms between hornbills and some large-seeded food plants, with the caveat that role redundancy within even small and specialized disperser assemblages renders other tree species less vulnerable to loss of regular dispersal agents. Expand
Observations on Seed Dispersal by Bats in a Tropical Humid Region in Veracruz, Mexico
The study of the seeds rejected during a year by a colony of Artibeus jamaicensis Leach in a cave located in Los Tuxttlas Region of Veracruz, Mexico, gave us information concerning the fruit speciesExpand
Ecology of Seed Dispersal
A general objective of this paper is to explore the degree to which dispersal process and mode are integrated and, in so doing, to catalyze their union. Expand
Postdispersal fruit and seed removal by forest-dwelling rodents in a lowland rainforest in Mexico
Differences in plant species seedling recruitment resulting from small rodent food choices can partially determine long-term forest floristic composition at the Los Tuxtlas rainforest. Expand