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MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser
 

Summary: MARINE ECOLOGY PROGRESS SERIES
Mar Ecol Prog Ser
Vol. 265: 7783, 2003 Published December 31
INTRODUCTION
Species with a mixed mode of reproduction may ex-
hibit wide variation among locations in the relative con-
tribution of sexual and asexual reproduction within
populations (Ashton & Mitchell 1989, Eckert & Barrett
1992, Eriksson 1996). Furthermore, asexual reproduc-
tion has been shown to be more important at a species
geographical margin when compared to central popu-
lations (reviewed in Eckert 2002) and to be related to
lower sexual reproduction via flowers, fruits and
seedling recruitment (Eriksson 1989, 1996). For exam-
ple, populations of Decodon verticillatus (an aquatic
plant) in the central portion of its range exhibited prodi-
gious seed production, whilst those at the northern geo-
graphical limit showed severely reduced seed produc-
tion (Eckert & Barrett 1995, Dorken & Eckert 2001).
Levels of sexual and asexual reproduction within

  

Source: Alberto, Filipe - Centro de Ciencias do Mar, Universidade do Algarve

 

Collections: Environmental Sciences and Ecology; Biology and Medicine