Germination Biology and the Ecology of Annual Plants

Rees, Mark; Long, Michael J.

doi:10.1086/285340

Cited by 110 publications

(83 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is consistent with other models for the evolution of dormancy, which are sensitive to annual seed bank survival (Cohen 1966;Rees and Long 1992;Nilsson et al 1994). Even the highest survival used in these models implies a seed bank half-life of approximately 6 years.…”

Section: Discussionsupporting

confidence: 89%

Competition for space can drive the evolution of dormancy in a temporally invariant environment

Satterthwaite

2009

Plant Ecol

View full text Add to dashboard Cite

I present a model for the evolution of a seed bank in the absence of externally driven environmental variation. I use Evolutionarily Stable Strategy (ESS) analyses of both analytic and simulation models to assess the conditions under which a dormant genotype can invade and resist invasion. In my models, plant seeds compete through lottery for discrete safe sites holding one individual each. Analyzing the conditions under which a dormant genotype can invade when rare and resist invasion once established, I conclude that dormancy can be an ESS when some fraction of seeds is retained locally, seed bank survival is high, and mortality in the seed bank is low. The advantage of dormancy stems from the ability of dormant seeds to recapture a lost site and the fact that a plant's offspring are more likely to win the lottery in its own site than in any new site. The advantage of dormancy does not depend on individual fecundity or on low relatedness with the offspring of kin, making this mechanism distinct from earlier models of sib competition.

show abstract

Section: Discussionsupporting

confidence: 89%

Competition for space can drive the evolution of dormancy in a temporally invariant environment

Satterthwaite

2009

Plant Ecol

View full text Add to dashboard Cite

show abstract

“…5C). Similarly, giving the smaller-seeded species the advantage of greater dispersal in time (increased longevity in the seed bank) would not change the results unless we also introduced temporal variability (Rees and Long 1992). This does not conflict with Holmes's and ) and high fecundity ( ).…”

Section: Coexistence In Nonspatial and Spatial Modelsmentioning

confidence: 94%

Coexistence and Relative Abundance in Annual Plant Assemblages: The Roles of Competition and Colonization

Levine

Rees²

2002

The American Naturalist

Self Cite

174

133

View full text Add to dashboard Cite

Article: Levine, J.M. and Rees, M. (2002) Coexistence and relative abundance in annual plant assemblages: The roles of competition and colonization. American Naturalist, 160 (4). pp. [452][453][454][455][456][457][458][459][460][461][462][463][464][465][466][467] eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. abstract: Although an interspecific trade-off between competitive and colonizing ability can permit multispecies coexistence, whether this mechanism controls the structure of natural systems remains unresolved. We used models to evaluate the hypothesized importance of this trade-off for explaining coexistence and relative abundance patterns in annual plant assemblages. In a nonspatial model, empirically derived competition-colonization trade-offs related to seed mass were insufficient to generate coexistence. This was unchanged by spatial structure or interspecific variation in the fraction of seeds dispersing globally. These results differ from those of the more generalized competition-colonization models because the latter assume completely asymmetric competition, an assumption that appears unrealistic considering existing data for annual systems. When, for heuristic purposes, completely asymmetric competition was incorporated into our models, unlimited coexistence was possible. However, in the resulting abundance patterns, the best competitors/poorest colonizers were the most abundant, the opposite of that observed in natural systems. By contrast, these natural patterns were produced by competition-colonization models where environmental heterogeneity permitted species coexistence. Thus, despite the failure of the simple competition-colonization trade-off to explain coexistence in annual plant systems, this trade-off may be essential to explaining relative abundance patterns when other processes permit coexistence.

show abstract

“…In order to realistically model the dynamics of the population in a stochastic environment, it is necessary to include this persistence (e.g. Ellner 1984;Rees & Long 1992). We achieved this by including new parameters in the model for Trifolium de¢ning seed production, the emergence of seed from the seed bank, the proportion of seed that is dormant and the proportion of seed that survives for a year in the seed bank, respectively.…”

Section: (B) Model Developmentmentioning

confidence: 99%

Determinants of the abundance of invasive annual weeds: community structure and non–equilibrium dynamics

Freckleton

Watkinson

Dowling

et al. 2000

Proc. R. Soc. Lond. B

View full text Add to dashboard Cite

The dynamics of an annual pasture community are described from a ¢ve-year experimental and monitoring study. The community was dominated by two grasses (Lolium rigidum and Vulpia bromoides) and a legume (Trifolium subterraneum). Fits of population dynamic models to per capita rates of population change indicate that interactions between the grasses were generally strong, while interactions between the grasses and legumes were weaker. Most, but not all, of the net e¡ects of competition on population growth could be attributed to interactions occurring during plant growth. Phase-plane analysis indicated that, for a constant environment, a joint equilibrium of the two grasses is unstable since interspeci¢c competition between Lolium and Vulpia is stronger than intraspeci¢c competition. Consequently, the community will tend to a mixture of only one or other of the grass species and T. subterraneum, depending on the founding composition of the pasture. Analysis of data taken from a year in which a drought occurred (1993^1994) demonstrated profound e¡ects on all three species. Modelling of the long-term impacts of the e¡ects of repeated droughts showed that disturbance of this form overrides the founder e¡ect observed under constant conditions. Consequently, Vulpia is ultimately able to invade any mixture of the other species in environments where stochastic disturbances occur.

show abstract

Germination Biology and the Ecology of Annual Plants

Cited by 110 publications

References 76 publications

Competition for space can drive the evolution of dormancy in a temporally invariant environment

Competition for space can drive the evolution of dormancy in a temporally invariant environment

Coexistence and Relative Abundance in Annual Plant Assemblages: The Roles of Competition and Colonization

Determinants of the abundance of invasive annual weeds: community structure and non–equilibrium dynamics

Contact Info

Product

Resources

About