FN Archimer Export Format
PT J
TI Scaling of processes shaping the clonal dynamics and genetic mosaic of seagrasses through temporal genetic monitoring
BT 
AF BECHELER, Ronan
   BENKARA, Elsa
   MOALIC, Yann
   HILY, Christian
   ARNAUD-HAOND, Sophie
AS 1:1;2:1;3:1;4:2;5:1;
FF 1:PDG-REM-EEP-LEP;2:PDG-REM-EEP-LEP;3:PDG-REM-EEP-LEP;4:;5:PDG-RBE-HM-RHSETE;
C1 IFREMER, DEEP, Ctr Brest, F-29280 Plouzane, France.
   IUEM, Lab Sci Environm Marin, Plouzane, France.
C2 IFREMER, FRANCE
   UBO, FRANCE
SI BREST
   SETE
SE PDG-REM-EEP-LEP
   IUEM
   PDG-RBE-HM-RHSETE
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 3.805
TC 33
UR https://archimer.ifremer.fr/doc/00181/29254/32174.pdf
LA English
DT Article
DE ;clonality;seagrass;spatio-temporal genetic structure;Zostera marina
AB Theoretically, the dynamics of clonal and genetic diversities of clonal plant populations are strongly influenced by the competition among clones and rate of seedling recruitment, but little empirical assessment has been made of such dynamics through temporal genetic surveys. We aimed to quantify 3 years of evolution in the clonal and genetic composition of Zostera marina meadows, comparing parameters describing clonal architecture and genetic diversity at nine microsatellite markers. Variations in clonal structure revealed a decrease in the evenness of ramet distribution among genets. This illustrates the increasing dominance of some clonal lineages (multilocus lineages, MLLs) in populations. Despite the persistence of these MLLs over time, genetic differentiation was much stronger in time than in space, at the local scale. Contrastingly with the short-term evolution of clonal architecture, the patterns of genetic structure and genetic diversity sensu stricto (that is, heterozygosity and allelic richness) were stable in time. These results suggest the coexistence of (i) a fine grained (at the scale of a 20 x 30 m quadrat) stable core of persistent genets originating from an initial seedling recruitment and developing spatial dominance through clonal elongation; and (ii) a local (at the scale of the meadow) pool of transient genets subjected to annual turnover. This simultaneous occurrence of initial and repeated recruitment strategies highlights the different spatial scales at which distinct evolutionary drivers and mating systems (clonal competition, clonal growth, propagule dispersal and so on) operate to shape the dynamics of populations and the evolution of polymorphism in space and time.
PY 2014
PD FEB
SO Heredity
SN 0018-067X
PU Nature Publishing Group
VL 112
IS 2
UT 000331625800004
BP 114
EP 121
DI 10.1038/hdy.2013.82
ID 29254
ER

EF