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Can a seed bank maintain the genetic variation in the above ground plant population?

Olivier Honnay, Beatrijs Bossuyt UGent, Hans Jacquemyn, Ayako Shimono and Kentaro Uchiyama (2008) OIKOS. 117(1). p.1-5
abstract
There are indications that a persistent seed bank can protect small and isolated plant populations from local extinction. Genetic mechanisms contributing to this phenomenon are the increase of local effective population size - and hence the decrease of genetic drift - through a reservoir of persistent seeds, and the accumulation of intergenerational genetic diversity in the seed bank. To find evidence for these mechanisms, we conducted two formal meta-analyses. First, we analyzed 42 published habitat fragmentation studies and investigated whether the degree of genetic differentiation between fragmented plant populations was mediated by seed longevity. Second, we reviewed 13 published studies reporting the genetic diversity of both the seed bank and the above ground plants, aiming at comparing genetic diversity contained in the seed bank with the above ground vegetation. We conclude that a persistent seed bank may indeed mitigate the consequences of habitat fragmentation and protect a species from genetic drift and population genetic differentiation. We found no evidence, however, of high levels of genetic diversity accumulating in the soil seed bank. If genetic differences are present between the standing crop and the seed bank, they are very likely the result of local selection acting either directly or indirectly as a filter on the alleles present in the seed bank. We finally suggest that 1) the role of the seed bank should not be neglected in habitat fragmentation studies and 2) it is not very fruitful to continue comparing seed bank genetic diversity with above ground plant genetic diversity, unless this is performed under different selection regimes.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
keyword
DESERT MUSTARD, PATTERNS, CONSEQUENCES, DIVERSITY, DYNAMICS, SIZE, FRAGMENTATION, CONSERVATION, LESQUERELLA-FENDLERI, LIFE-HISTORY TRAITS
journal title
OIKOS
OIKOS
volume
117
issue
1
pages
1 - 5
Web of Science type
Article
Web of Science id
000251387000001
JCR category
ECOLOGY
JCR impact factor
2.97 (2008)
JCR rank
35/124 (2008)
JCR quartile
2 (2008)
ISSN
0030-1299
DOI
10.1111/j.2007.0030-1299.16188.x
language
English
UGent publication?
yes
classification
A1
id
744359
handle
http://hdl.handle.net/1854/LU-744359
date created
2009-09-09 09:01:36
date last changed
2009-10-26 14:23:06
@article{744359,
  abstract     = {There are indications that a persistent seed bank can protect small and isolated plant populations from local extinction. Genetic mechanisms contributing to this phenomenon are the increase of local effective population size - and hence the decrease of genetic drift - through a reservoir of persistent seeds, and the accumulation of intergenerational genetic diversity in the seed bank. To find evidence for these mechanisms, we conducted two formal meta-analyses. First, we analyzed 42 published habitat fragmentation studies and investigated whether the degree of genetic differentiation between fragmented plant populations was mediated by seed longevity. Second, we reviewed 13 published studies reporting the genetic diversity of both the seed bank and the above ground plants, aiming at comparing genetic diversity contained in the seed bank with the above ground vegetation. We conclude that a persistent seed bank may indeed mitigate the consequences of habitat fragmentation and protect a species from genetic drift and population genetic differentiation. We found no evidence, however, of high levels of genetic diversity accumulating in the soil seed bank. If genetic differences are present between the standing crop and the seed bank, they are very likely the result of local selection acting either directly or indirectly as a filter on the alleles present in the seed bank. We finally suggest that 1) the role of the seed bank should not be neglected in habitat fragmentation studies and 2) it is not very fruitful to continue comparing seed bank genetic diversity with above ground plant genetic diversity, unless this is performed under different selection regimes.},
  author       = {Honnay, Olivier and Bossuyt, Beatrijs and Jacquemyn, Hans and Shimono, Ayako and Uchiyama, Kentaro},
  issn         = {0030-1299},
  journal      = {OIKOS},
  keyword      = {DESERT MUSTARD,PATTERNS,CONSEQUENCES,DIVERSITY,DYNAMICS,SIZE,FRAGMENTATION,CONSERVATION,LESQUERELLA-FENDLERI,LIFE-HISTORY TRAITS},
  language     = {eng},
  number       = {1},
  pages        = {1--5},
  title        = {Can a seed bank maintain the genetic variation in the above ground plant population?},
  url          = {http://dx.doi.org/10.1111/j.2007.0030-1299.16188.x},
  volume       = {117},
  year         = {2008},
}

Chicago
Honnay, Olivier, Beatrijs Bossuyt, Hans Jacquemyn, Ayako Shimono, and Kentaro Uchiyama. 2008. “Can a Seed Bank Maintain the Genetic Variation in the Above Ground Plant Population?” Oikos 117 (1): 1–5.
APA
Honnay, O., Bossuyt, B., Jacquemyn, H., Shimono, A., & Uchiyama, K. (2008). Can a seed bank maintain the genetic variation in the above ground plant population? OIKOS, 117(1), 1–5.
Vancouver
1.
Honnay O, Bossuyt B, Jacquemyn H, Shimono A, Uchiyama K. Can a seed bank maintain the genetic variation in the above ground plant population? OIKOS. 2008;117(1):1–5.
MLA
Honnay, Olivier, Beatrijs Bossuyt, Hans Jacquemyn, et al. “Can a Seed Bank Maintain the Genetic Variation in the Above Ground Plant Population?” OIKOS 117.1 (2008): 1–5. Print.