author = "Manzaneda, Antonio J."

Encontrado 27 documentos, página mostrada 1 de 3

Pre- and postdispersal seed predation by rodents: balance of food and safety

Description: Seed presentation and availability for seed predators change during every plant reproductive cycle. We know very little about how those changes impinge on both the ability of seed predators to impact plant populations and the foraging costs associated with seed consumption. Therefore, we conducted...
Language(s): Inglés

Pre- and postdispersal seed predation by rodents: balance of food and safety

Description: Seed presentation and availability for seed predators change during every plant reproductive cycle. We know very little about how those changes impinge on both the ability of seed predators to impact plant populations and the foraging costs associated with seed consumption. Therefore, we conducted...
Language(s): Inglés

Adaptive advantages of myrmecochory: The predator-avoidance hypothesis tested over a wide geographic range

Description: The predator-avoidance hypothesis states that once released from the parent plant, myrmecochorous seeds are rapidly taken by ants to their nests, where they are protected from predators. Previous studies conducted to test this hypothesis have frequently neglected two major aspects necessary for its ...
Language(s): Inglés

Indirect effects of alternative food resources in an ant-plant interaction

Description: The seeds of many plant species present a food body that is consumed by animal dispersers. In theory, if the animals are polyphagous, the availability of alternative food resource other than the diaspore itself may influence its dispersal and survival. We used the myrmecochore Helleborus foetidus L....
Language(s): Inglés

Geographic and temporal variation in the ant-seed dispersal assemblage of the perennial herb Helleborus foetidus L. (Ranunculaceae)

Description: Spatio-temporal variations in the composition of the animal interactive assemblages may result in variations in selective pressures on the plants. In ant-seed dispersal mutualisms, the study of the magnitude of spatial and temporal variation of ant assemblages is rarely studied, limiting inferences ...
Language(s): Inglés

The role of competition by dominants and temperature in the foraging of subordinate species in Mediterranean ant communities

Description: In this paper we test the influence of temperature and interference competition by dominant species on the foraging of subordinate species in Mediterranean ant communities. We have analyzed the changes in resource use by subordinate species in plots with different abundances of dominant ants, and in...
Language(s): Inglés

Geographic variations in seed dispersal by ants: are plant and seed traits decisive?

Description: 5 pages, 2 figures, 1 table.-- PMID: 17119907 [PubMed].-- Available online Nov 22, 2006. , The effect of local ant species on the dispersal success of a myrmecochorous plant, Helleborus foetidus, was analyzed in two populations of the Iberian Peninsula (Caurel and Cazorla, respectively). The contributi...
Language(s): Inglés

Effects of microsite disturbances and herbivory on seedling performance in the perennial herb Helleborus foetidus (Ranunculaceae)

Description: 10 páginas, 3 figuras, 2 tablas. , The impact of small scale disturbances on the early seedling performance components of Helleborus foetidus (Ranunculaceae) was studied through a transplant experiment. The aims of this study were: (i) to determine if the herbivory pattern depends on microsite disturba...
Language(s): Inglés

The role of competition by dominants and temperature in the foraging of subordinate species in Mediterranean ant communities

Description: In this paper we test the influence of temperature and interference competition by dominant species on the foraging of subordinate species in Mediterranean ant communities. We have analyzed the changes in resource use by subordinate species in plots with different abundances of dominant ants, and in...
Language(s): Inglés

Geographic and temporal variation in the ant-seed dispersal assemblage of the perennial herb Helleborus foetidus L. (Ranunculaceae)

Description: Spatio-temporal variations in the composition of the animal interactive assemblages may result in variations in selective pressures on the plants. In ant-seed dispersal mutualisms, the study of the magnitude of spatial and temporal variation of ant assemblages is rarely studied, limiting inferences ...
Language(s): Inglés

Encontrado 27 documentos, página mostrada 1 de 3

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