. Plant succession; an analysis of the development of vegetation. Plant ecology. THE PEAT CLISTASE. 385 of the peat-moors, but apparently is no longer formed. In spite of the calcareous subsoil Sphagnum peat is constantly formed anew in the moors. The Phragmites-Cladium and Carex strida commimities furnish the material for the formation of different kinds of grass-peat. The author has found also two pronounced stmnp-layers in the peat-moors, containii^ for the most part old forest remains. These are regarded as indicating interruptions in the growth of the peat, and are identified with the bor
. Plant succession; an analysis of the development of vegetation. Plant ecology. THE PEAT CLISTASE. 385 of the peat-moors, but apparently is no longer formed. In spite of the calcareous subsoil Sphagnum peat is constantly formed anew in the moors. The Phragmites-Cladium and Carex strida commimities furnish the material for the formation of different kinds of grass-peat. The author has found also two pronounced stmnp-layers in the peat-moors, containii^ for the most part old forest remains. These are regarded as indicating interruptions in the growth of the peat, and are identified with the boreal and sub-boreal periods of Blytt. The first fell in the last part of the Ancylus period, the latter in the lAtorina period. The moist Atlantic period opened the Ldtorina period, and in the uppermost parts of peat-moors are to be found remains of the moist sub-Atlantic period bedded upon the sub-boreal stump-layer. Finally, an exhaustive account is given of the invasion and general development of the vegetation. The latter is shown graphically in figure 40, while the geological periods and the corresponding vegetations are found in the table at the bot- tom of this page. Meny- Carex antnes atricta Forma- Fprm, tjon> formjs Fj Cladtum- Phrag- Schoenua Form. mJtea nigricana Forjn, Form. S. ferru- Carex panlcea Form. Sphagnetom carlcJisriMO. Pinetoro aphagnotizm Blrch-Ptne mtKed foreat Fig. 40.—Adseres of the hydrosere in southern Sweden. After Semandei. Sub-Atlantic period. Litorina age. Sub-boreal period. Oak vegetation. Atlantic period. Boreal period. Ancylus age. Pine vegetation. Cladimn, Iris, Carex, Fseudo- cyperus, etc. Sub-arctic period. Boreal willows, Dryas, Betula nana, etc. Diyas vegetation with Salix polaris. Arctic period. Polar sea Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original wor
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1916
