Contributions in geographical exploration . here, instead of being a varied association including Sali-cornia and other plants conspicuously adapted structurallyfor a halophytic existence, the salt marsh is often composedof a pure stand of a single grass, Puccinellia sp. When otherplants occur they are in such small numbers and so scatteredthat they may be considered as accidental rather than asforming definite components of the association. Nov., 1918] Recovery of Vegetation at Kodiak 53 The ash fall around Kodiak effectually buried the saltmarsh vegetation, and the conformation of th
Contributions in geographical exploration . here, instead of being a varied association including Sali-cornia and other plants conspicuously adapted structurallyfor a halophytic existence, the salt marsh is often composedof a pure stand of a single grass, Puccinellia sp. When otherplants occur they are in such small numbers and so scatteredthat they may be considered as accidental rather than asforming definite components of the association. Nov., 1918] Recovery of Vegetation at Kodiak 53 The ash fall around Kodiak effectually buried the saltmarsh vegetation, and the conformation of the ground is suchthat the ash layer does not erode away rai)idly in such places,but rather has been increased by subsequent deijosition. Thishas not only prevented the revival of the original plants, but,by raising the level of the land, has so altered conditions thatconsiderable areas, formerly overflowed by the tide, are nowabove its reach. It is to be doubted, therefore, whethersalt marshes will become so numerous as before the 4 Jt^ mtr Photograph by D. B. ChurchA SALT MARSH STARTING OX AN ASH plants are mostly Puccinellia amongst which may be seen numerous fragmentsof decaying alga^, principally Fucus. (Vegetation Station 47.) It is only at a few places that one can look for the stages intheir return. In one such place examined, numerous seedlingsof Puccinellia Alaskce, together with A triplex Alaskcc, hadstarted, and had reached reproductive maturity. (See cutabove). But the plants stood apart from each other and hadnot made much progress toward the formation of the thickturf characteristic of the original salt marsh. (See page 52).No progress in this direction was shown between 1915 and191G. But this may have been due to the severity of theintervening winter. ^4 The Ohio Journal of Science [Vol. XIX, No. 1, The ash on which the salt marsh plants were starting wasfoul with decaying algae on the surface, and beneath it wasblackened by bacterial action an
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