. The Canadian field-naturalist. 1980 RiNGius: Coastal Marsh Vegetation, James Bay 115. Figure 4. Puccinellia phryganodes in the vicinity of mean daily high tide, showing turf-like habit and invasion of bare ground by production of stolons. soft soils. As a result the contact between them inter- digitated over several hundred metres. In contrast very little overlap occurred on the south transect because of the large "permanent" pool of water below MDHT which excluded Puccinellia phryganodes. Several other taxa were also less frequent below MDHT for this reason (Figure 2). Wet hollows
. The Canadian field-naturalist. 1980 RiNGius: Coastal Marsh Vegetation, James Bay 115. Figure 4. Puccinellia phryganodes in the vicinity of mean daily high tide, showing turf-like habit and invasion of bare ground by production of stolons. soft soils. As a result the contact between them inter- digitated over several hundred metres. In contrast very little overlap occurred on the south transect because of the large "permanent" pool of water below MDHT which excluded Puccinellia phryganodes. Several other taxa were also less frequent below MDHT for this reason (Figure 2). Wet hollows in the vicinity of MDHT supported mixed populations of Scirpus {S. lacustris, S. maritimus var. paludosus) (Bulrush), Eleocharis, Senecio congestus (Marsh- fleabane). Ranunculus cymbalaria (Seaside Crow- foot), and Thglochin palustris. Puccinellia lucida (Goose-grass) was frequent in dry areas on the crest of the second ridge on the north transect. Salicornia europaea (Glasswort) and A triplex patula (Spear- scale) were also present but rare. Carex paleacea (Sedge) occurred dowii to the level of MDHT on the south transect. It was expanding rapidly in this area and appeared to be superseding Puccinellia phryga- nodes. On the north transect Carex paleacea was rare below the level of the third ridge. The interridge vegetation between the second and third ridges was dominated by Carex mackenziei (Sedge). This taxon formed extensive monospecific swards in 3-8 cm of water but in shallower water it was usually overgrown by taller taxa such as Deschampsia caespitosa (Tufted Hairgrass), Carex salina (Sedge), and Carex paleacea. Deeper-water habitats supported dense stands of either Eleocharis or Scirpus with the latter tolerating somewhat deeper water conditions. The third-ridge salt pans and associated vegetation were better developed on the north transect. The pans were either barren or sprinkled with sparse to dense populations oiSalicornia europaea and were typically bordered by Pu
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