Results 261 to 270 of about 56,076 (305)
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Spatiotemporal variation in predispersal seed predation intensity
Oecologia, 1996The effect of predispersal seed predation by Bruchus atomarius (Bruchidae, Coleoptera) on individual performance and population dynamics of the perennial forest herb, Lathyrus vernus (Leguminosae), was investigated in 11 permanent plots over 4 years. Seed predation and parameters describing intra-specific neighbour distance, plant size, inflorescence ...
Johan Ehrlen
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Annual Review of Ecology and Systematics, 1971
Many plants suffer very heavy preand/or post-dispersal seed predation by animals. A few exemplary studies (2,18,38,52,74,87, 106, 110, 111, 124, 140, 161, 162, 171, 181, 187, 196, 197, 203, 205, 207, 217, 220, 227) and a variety of shorter reports scattered through the agricultural, botanical, and zoological literature suggest a large and important ...
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Many plants suffer very heavy preand/or post-dispersal seed predation by animals. A few exemplary studies (2,18,38,52,74,87, 106, 110, 111, 124, 140, 161, 162, 171, 181, 187, 196, 197, 203, 205, 207, 217, 220, 227) and a variety of shorter reports scattered through the agricultural, botanical, and zoological literature suggest a large and important ...
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Diet and dental topography in pitheciine seed predators
American Journal of Physical Anthropology, 2012AbstractPitheciines (Pithecia,Chiropotes, andCacajao) are a specialized clade of Neotropical seed predators that exhibit postcanine teeth with low and rounded cusps and highly crenulated occlusal surface enamel. Data on feeding ecology show thatPitheciaconsumes proportionally more leaves than other pitheciine species, and comparative studies ...
Justin A, Ledogar +3 more
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Post-dispersal seed predation and seed bank persistence
Seed Science Research, 1998AbstractThis study examines whether post-dispersal seed predators could be an important selective force in determining the seed bank strategies of grassland plants. It tests the hypothesis that species with persistent seed banks should sustain proportionally less predation of buried seeds than species which have transient seed banks and that this ...
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Co-evolution of seed size and seed predation
Evolutionary Ecology, 1998Using the evolutionarily stable strategy (ESS) approach in a model for the co-evolution of seed size and seed predation, I show that seed size variation within individual plants is favoured if there is a trade-off in the predator's attack rate for different seed sizes. A single seed size is not evolutionarily stable because a predator that is optimally
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Seed Predation and Seed Number in Scheelea Palm Fruits
Ecology, 1977Two Scheelea palm populations in Central America were studied: Scheelea rostrata in Costa Rica and Scheelea zonensis in the Panama Canal Zone. Most of the fruits in both populations contained one seed, but small proportions of the fruits on each tree contained two or three seeds.
David F. Bradford, Christopher C. Smith
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Invertebrate Seed Predators Reduce Weed Emergence Following Seed Rain
Weed Science, 2016Weeds are selected to produce overwhelming propagule pressure, and while vertebrate and invertebrate seed predators destroy a large percentage of seeds, their ecosystem services may not be sufficient to overcome germination site limitations. Cover crops are suggested to facilitate seed predation, but it is difficult to disentangle reductions in weed ...
Carmen K. Blubaugh, Ian Kaplan
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Pre-dispersal predation effect on seed packaging strategies and seed viability
Oecologia, 2015An increased understanding of intraspecific seed packaging (i.e. seed size/number strategy) variation across different environments may improve current knowledge of the ecological forces that drive seed evolution in plants. In particular, pre-dispersal seed predation may influence seed packaging strategies, triggering a reduction of the resources ...
Lucía DeSoto +4 more
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Masting, seed dispersal and seed predation in the cycad Macrozamia communis
Oecologia, 1986Little is known about the adaptive value of mast seeding, a common phenomenon in temperate trees and shrubs. Masting is likely to affect both seed dispersal and seed predation. In systems where similar taxa of animals are involved in these two processes, the consequences of mast seeding are likely to be particularly complicated. This study examined the
Ruth T, Ballardie, Robert J, Whelan
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Seed shadows, seed predation and the advantages of dispersal
1986Given the universal prevalence of plant modifications for dispersal, it is appropiate to ask what advantages do these traits provide. In this paper we propose that ecological phenomena that have selected for these ‘adaptations’ are operational at a local scale and argue that for a proper evaluation of dispersal, it is mandatory to explore the ...
Rodolfo Dirzo, César A. Domínguez
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