Results 171 to 180 of about 1,629 (192)
Granivory in the Chilean matorral: extending the information on arid zones of South America
Ecography, 1995 Comparative studies of granivory intensity across different arid and semi‐and regions of the world have assumed homogeneity of conditions over large geographical areas, despite the existence of evident heterogeneities at local and regional scales For South America, previous evidence from the Monte desert, Argentina, showed that granivory intensity is ...
Rodrigo A Vasquez +2 more
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Granivory and microhabitat use in Australian desert rodents: are seeds important?
Oecologia, 1994The diet and microhabitat use of two species of native Australian desert rodents, the spinifex hoppingmouseNotomys alexis and sandy inland mousePseudomys hermannsburgensis, were studied in the Simpson Desert, south-western Queensland. Contrary to expectation, both species were confirmed from analyses of their stomach contents to be omnivorous.
Brad R, Murray, Chris R, Dickman
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Limited influence of experimentally induced predation risk on granivory in a tropical forest
Journal of Tropical Ecology, 2022AbstractSeed predation by rodents can strongly influence plant recruitment and establishment. The extent to which predation risk indirectly alters plant survival in tropical forests via impacts on granivory is unclear, making it difficult to assess the cascading impacts of widespread predator loss on tree recruitment and species composition ...
Alys Granados +2 more
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Large seeds as a defensive strategy against partial granivory in the Fagaceae
Journal of EcologyAbstract Large seeds interact with a wide range of animals (e.g. predators) and are dispersed via certain small animals' foraging behaviours, such as caching. Some of the most iconic species of large‐seeded plants have long fascinated ecologists studying biotic ...
Alexandre Antonelli, Neng Wei, Can Dai
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Mechanisms for the keystone status of kangaroo rats: graminivory rather than granivory?
Oecologia, 1997Graminivory by kangaroo rats (Dipodomys spp.) was investigated as a potential mechanism for the keystone role of these rodents in the dynamics of desert grasslands. Experiments confirmed that Ord's kangaroo rats (Dipodomys ordii) cut and consumed a large proportion of the tillers of three Chihuahuan Desert tussock-forming grass species.
Graham I H, Kerley +2 more
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The Effects of Herbivory and Granivory on Terrestrial Plant Succession
Oikos, 1993Based on resource availability models of plant defense investment, several authors have predicted and documented that herbivores tend to accelerate the pace of plant community succession. A literature survey of experimental and observational tests of the effects of above-ground, native herbivores on terrestrial plant succession reveals a more complex ...
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The Desert Granivory Experiments at Portal
1998Abstract In 1977 D. W. Davidson, 0. J. Reichman, and I began experimental manipulations in the Chihuahuan Desert near the little town of Portal in southeastern Arizona to study interactions among seed-eating rodents and ants and between these consumers and the annual plants that supply their primary food resources.
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Effect of spatial and temporal heterogeneity on granivory in the Monte Desert, Argentina
Austral Ecology, 2004Abstract An important aspect of arid regions is the spatial heterogeneity resulting from differences among plant communities. There are process differences among different vegetation patches increasing variability in the functioning of the ecosystem. The purpose of this study was to estimate granivory, by studying variation of seed removal rates among
Carlos E Borghi
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Granivory and Competition as Determinants of Annual Plant Diversity in the Chihuahuan Desert
Oikos, 1992In the Chihuahuan Desert of southeastern Arizona, we monitored the responses of three seasonal classes of annual plants (winter, summer and biseasonal species) to experimental removal of seed-eating rodents and ants over a ten-year period (1978 through 1987).
Douglas A. Samson +2 more
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Hierarchical effects of rainfall, nurse plants, granivory and seed banks on cactus recruitment
Journal of Vegetation Science, 2012AbstractAimsPlant facilitation is recognized as an important process, contributing not only to the ecology of individual species, but the diversity, organization and stability of communities as a whole. While decades of studies have enhanced our knowledge of the mechanisms contributing to plant facilitation, greater attention is now being given to the ...
J. Nathaniel Holland +1 more
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