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FIGURE 55. Halimione sprigs being dug from the nursery area at
lie Grande.
Invasion of Plantings by Other Plants
Observations at lie Grande and Kerlavos indicate that other marsh
plants invade our experimental plantings more rapidly than they
colonize areas that still lack vegetation cover as a result of cleanup
operations. In one of our May 1979 experimental plantings of
Puccinellia at Kerlavos (Figs. 56, 57, 58), 97% of the transplants in
the 60 m^ area had been invaded by at least one other species by May
1981 (Fig. 59). Of these transplants which had been invaded, 66% were
invaded by two or more other species. The most abundant invader was an
annual species of Salicornia which was present in 94% of the
transplants sampled. Other invading genera in the order of their
percentage of presence per transplant sampled were Cochleria (49%),
Halimione (24%), Spergularia (10%), and Armeria (1%).
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