Seed predation
Seed predation of Virola bicuhyba (Schott) Warb. (Myristicaceae) in the Atlantic forest of south-eastern Brazil
... the seed stage was very low in the study area, during the two years of observation, as a consequence of the intense predation by insects and ...the predation of seeds occurred independently to the ...
8
Edge effect on post-dispersal artificial seed predation in the southeastern Amazonia, Brazil
... case, seed predation rates may increase as the activity of generalist predator species, adapted to edge environments, may extend further into the fragment (Wilcove, 1985 ), or decrease, due to edge aversion ...
5
Effect of woodland patch size on rodent seed predation in a fragmented landscape
... A set of three seeds, namely a chestnut Aesculus hippocastanum, an acorn Quercus robur and a sloe Prunus spinosa kernel were placed onto the ground, exactly at each grid point. This was done in the autumns of 1985 (30 ...
6
Crop size infl uences pre-dispersal seed predation in the Brazilian Cerrado
... in seed mass and fiber, and a decrease in starch content decrease seed losses to pre-dispersal seed predators in savannas from Central Venezuela (Ramírez & Traveset ...expectation seed ...
6
Pre-dispersal seed predation and abortion in species of Callisthene and Qualea (Vochysiaceae) in a Neotropical savanna
... and predation are both considered de- terminants of the size and reproductive ecology of plant populations (Janzen 1971a, 1971b; Bradford & Smith 1977; Garcia et ...and predation can further ...
12
PALM HARVESTING AFFECTS SEED PREDATION OF Euterpe edulis, A THREATENED PALM OF THE BRAZILIAN ATLANTIC FOREST
... of seed predation and the dominance of a tree species (Boucher, 1981; Smith, 1987; Smith et ...density, seed predators are satiated by the great amount of seeds produced, thus increasing the mean ...
8
Seed predation by rodents and safe sites for large-seeded trees in a fragment of the Brazilian Atlantic forest
... of seed predation, including large seeds (Adler, 1995; DeMattia et ...as seed predators remains neglected ...of seed harvesting, dispersal and predation by rodents are greatly affected ...
9
Uncoupling the effects of seed predation and seed dispersal by granivorous ants on plant population dynamics.
... seeds), seed predation only affects the individual density of this species, and there is no predation effect on its spatial occupation and ...Moreover, seed dispersal mediated by ants is not ...
11
Empty seeds are not always bad: simultaneous effect of seed emptiness and masting on animal seed predation.
... between seed crop size and the proportion of empty seeds in relation to seed ...that seed predation (proportion of full seeds eaten) decreases as the proportion of empty seeds increases but ...
9
Seed dispersal and predation of Buchenavia tomentosa Eichler (Combretaceae) in a Cerrado sensu stricto, midwest Brazil
... stony seed appears to constrain the consumption by smaller ...in seed predation and have been recognized as important pre-dispersal predators in the neotropical region (Francisco et ...
9
Seed bank estimation and regeneration studies of Calophyllum apetalum Willd., from Western Ghats of Karnataka
... The seed dispersal in tropical rain forests is mediated by several biotic and abiotic agents involving successful establishment of new individuals at various distances from the mother ...of seed bank and ...
7
ECOLOGY, BEHAVIOR AND BIONOMICS
... of predation, with holes from bruchid beetles being the most ...However, predation was three fold higher in nest vicinity ...Precisely, seed predation varied from ...
5
Crop damage of Eriotheca gracilipes (Bombacaceae) by the Blue-Fronted Amazon (Amazona aestiva, Psittacidae), in the Brazilian Cerrado
... increasing seed predation ...of seed survival, suggest a negative density-dependent ...are seed predators which impact on fruit crops is related to factors such as foraging behavior, home ...
7
Using small-scale studies to prioritize threats and guide recovery of a rare hemiparasitic plant: Cordylanthus rigidus ssp. littoralis.
... Senesced C.r.l. showed considerable seed predation by moth larvae (Clepsis sp., Tortricidae). On 3 August 2006 at the peak of flowering and prior to fruit development, 10 pairs of C.r.l. individuals were ...
9
WATER MITE PREDATION ON ZOOPLANKTON OF A TROPICAL LAKE
... Density fluctuations of the mite Krendowskia sp. and of prey in the lake, in 1998/1999, showed that the highest peaks of Chaoborus sp. and Daphnia gessneri coincided with low predator densities (Fig. 2). As the ...
7
The ubiquity of intraguild predation among predatory arthropods.
... to high aphid densities [24-27] a condition that may favour encounters between predators; although high prey abundance may also lead to predator satiation and thereby a reduction in intraguild interactions. Second, by ...
7
Seed quality parameters of three interspecific hybrids of elephant grass x pearl millet
... assess seed quality of these three interspecific hybrids by using tests of: germination; accelerated aging, at 42 ºC; 1,000 seeds weight; drying curves; and sorption and desorption ...
6
MUSKMELON SEED GERMINATION AND SEEDLING DEVELOPMENT IN RESPONSE TO SEED PRIMING
... two osmotic potentials (Table 1). A third osmotic potential for each solution ranging from -0.8 to -0.9 MPa was also used, but these treatments were discarded due to the high number of germinated seeds during the soaking ...
5
SEED TECHNOLOGY RESEARCH IN BRAZIL: EVOLUTION AND PERSPECTIVE
... of seed research in Brazil was the establishment by the Brazilian government of National Seed Plan (PLANASEM) in ...National Seed Plan (AGIPLAN), which involved seed production and research ...
11
Fish predation by semi-aquatic spiders: a global pattern.
... circumstances predation may become highly focussed upon ...fish predation by semi- aquatic pisaurids has been particularly frequently witnessed in shallow freshwater wetlands at many different locations in ...
21