How important is seed predation to recruitment in stable populations of long-lived perennials?

@article{Andersen2004HowII,
  title={How important is seed predation to recruitment in stable populations of long-lived perennials?},
  author={Alan N. Andersen},
  journal={Oecologia},
  year={2004},
  volume={81},
  pages={310-315}
}
  • A. Andersen
  • Published 1 November 1989
  • Biology, Medicine
  • Oecologia
SummaryThe many evolutionary modifications to seed biology in response to seed predation do not necessarily imply that seed predators have an important impact on population recruitment. This is because competition between individual plants for rare safe sites can cause an ‘oversupply’ of seeds so far as a population is concerned. The importance of seed losses to population recruitment at any point in time is related to the abundance of safe sites (Fig. 1): it is zero when safe sites are absent… Expand
Seed supply limits seedling recruitment of Eucalyptus miniata: interactions between seed predation by ants and fire in the Australian seasonal tropics
TLDR
Results indicate that seedling recruitment in E. miniata is limited by both seed supply and microsite availability, but seed predation by ants reduces the likelihood of seedling establishment from low to virtually zero, which suggests that it plays a potentially important role in the population dynamics of savanna eucalypts. Expand
Seed predators limit plant recruitment in Neotropical savannas
TLDR
The results lend support to the recent hypothesis that herbivores have major and underappreciated impacts in Neotropical savannas, and that top–down factors can influence the demography of plants in this extensive and biodiversity-rich biome in previously unexplored ways. Expand
Seed and microsite limitations of recruitment and the impacts of post-dispersal seed predation at the within population level
TLDR
This study shows that the analysis of seed predation in relation to recruitment limitations at smaller spatial scales within the population provides more insight to understand its impact. Expand
Widespread seed limitation affects plant density but not population trajectory in the invasive plant Centaurea solstitialis
TLDR
Flowering plant density was decoupled from seed production by a strong compensatory response in the surviving plants; seed production was nearly constant in plots across all seed addition levels, and no long-term decline is predicted. Expand
The impacts of environmental change on dispersal of large-seeded forest species by the emu
TLDR
The population dynamics of four large-seeded species within the jarrah (Eucalyptus marginata) forests of southwestern Australia was investigated within areas of contrasting high/low emu abundance, showing that the emu is a highly mobile and effective LDD vector, and could disperse many seeds > 1500 m from the parent plant and up to a maximum dispersal distance of ca. Expand
Seed dynamics of resprouting shrubs in grassy woodlands: Seed rain, predators and seed loss constrain recruitment potential
TLDR
This study suggests that seed predation is a key factor contributing to seed-limited recruitment in grassy woodland shrubs by reducing the number of seeds stored in the soil. Expand
Total annual seed loss on a perennial legume through predation by insects: The importance of within-season seed and seed feeder dynamics
TLDR
This study highlights the potential importance of within-season interactions between plant, seed feeder, natural enemies and environment in determining total seed loss through predation, particularly where seed gain and loss are not synchronous and where insects are multivoltine. Expand
Plant density can increase invertebrate postdispersal seed predation in an experimental grassland community
TLDR
Examination of effects of conspecific density on postdispersal seed predation by invertebrates of three grassland species and the impact of plant species richness and different seed predator communities on total and relative seedpredation highlights the importance of invertebrate seed predations to structure grasslands via density‐dependent effects and differing preferences of consumer groups. Expand
Seed predation under high seed density condition: the palm Euterpe edulis in the Brazilian Atlantic Forest
TLDR
Only rarely has seed predation been studied in very dense stands of a given plant species, and it is noted that at a population scale, a high density of seeds could satiate predators, resulting in a negative correlation between predation and seed density. Expand
Population Dynamics And Environmental Factors Influencing Herbs In Intact And Degraded Florida Rosemary Scrub
Knowledge of seed ecology is important for restoring ecosystems degraded by anthropogenic activities. Current efforts to preserve and reintroduce populations of plant species endemic to Florida areExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 50 REFERENCES
Effects of Seed Predation by Ants on Seedling Densities at a Woodland Site in SE Australia
TLDR
It is suggested that seed predation by ants limits seedling recruitment in the absence of fire, and that predator satiation plays an important role in successful recruitment following fire. Expand
Distribution Ecology: Variation in Plant Recruitment over a Gradient in Relation to Insect Seed Predation
TLDR
It is suggested that indigenous insect seed predators can be a major force controlling the dynamics of a native plant species over its natural distributional range. Expand
Rates of seed removal by ants at heath and woodland sites in southeastern Australia
TLDR
The results suggest that seed predation by ants can substantially deplete seed reserves: however, its actual effect on seedling recruitment is likely to depend on many factors including seed size, crop size, weather, timing and location of seed fall, availability of alternative food sources, patterns of seedling mortality, and fire, none of which have been adequately investigated. Expand
The effect of rodent seed predation on four species of California annual grasses
TLDR
Vertebrate seed predation is discussed as a potentially important factor in the yearly patterns of plant population regulation in California annual grasslands. Expand
SPECIES INTERACTIONS IN A SUCCESSIONAL GRASSLAND. I. SEED RAIN AND SEEDLING RECRUITMENT
TLDR
The poor relationship between seed rain and recruitment for the perennials probably reflects the over-riding importance of adult interference as an influence on seedling establishment in the perennial vegetation. Expand
Aspects of the dynamics of the seed‐banks and seedling populations of Acacia victoriae and Cassia spp. in arid western New South Wales
TLDR
Examination of aspects of the dynamics of the seed-banks and seedling populations of these plants to determine their influence upon recruitment frequency finds that recruitment of these shrubs is intermittent, it is most likely a result of low seedling survival rather than infrequent germination. Expand
Pre‐dispersal seed losses to insects in species of Leptospermum (Myrtaceae)
TLDR
Fruit production by L. myrsinoides was unusually low at most sites during 1984; in each case this coincided with unusually high rates of insect attack, suggesting that predator satiation operates during normal seasons. Expand
Effects of Seed Predation by a Tropical Ant on Competition Among Weeds
The native fire ant, Solenopsis geminata, harvests small-sized seeds, especially grasses, in disturbed habitats in wet tropical areas of Mexico and Central America. When common, this ant can lowerExpand
Immediate and longer‐term effects of fire on seed predation by ants in sclerophyllous vegetation in south‐eastern Australia
TLDR
Results from a nearby heathland site indicated that unusually high rates of seed removal, paralleling increases in abundance of R. tasmaniensis, can persist for at least 2 years following fire, which has potentially important implications for post-fire recruitment. Expand
Seed dynamics in Calluna-Arctostaphylos heath in north-eastern Scotland.
TLDR
Seeds produced by individual species were found to follow the abundance of the species in each stand, though the performance of some species declined as the Calluna canopy closed, and little seed input occurred from surrounding areas into closed or recently burned stands. Expand
...
1
2
3
4
5
...