. Dedication papers : scientific papers presented at the dedication of the laboratory building and plant houses, April 19-21, 1917. the vertical orhistorical succession in the bogs, for he says: While working on theecology of ravines near Ann Arbor, Michigan, I became convincedthat the reactions of plants on their habitat were equally as great andprofound, in some cases, as the influence of edaphic and climatic 412 BROOKLYN BOTANIC GARDEN MEMOIRS factors. In various places the decomposed remains of an earliervegetation led to mechanical and chemical changes in the soil, theextent of which was
. Dedication papers : scientific papers presented at the dedication of the laboratory building and plant houses, April 19-21, 1917. the vertical orhistorical succession in the bogs, for he says: While working on theecology of ravines near Ann Arbor, Michigan, I became convincedthat the reactions of plants on their habitat were equally as great andprofound, in some cases, as the influence of edaphic and climatic 412 BROOKLYN BOTANIC GARDEN MEMOIRS factors. In various places the decomposed remains of an earliervegetation led to mechanical and chemical changes in the soil, theextent of which was more effective toward breaking up the flora into aheterogeneous formation, accompanied by a frequent replacement ofone dominating group by another. There are some bogs without evidence of marl at the reports all the many peat bogs examined by him in Maine asresting on sand, clay or rock bottom, none on marl. Most of thepeat bogs in the Adirondack region of New York have no marl at thebottom. These presumably were from the first supplied by springsof non-alkaline water. Some of the peat bogs of central and western. Fig. 2. Peat bog near McLean, Tompkins Co., N. Y. Chamaedaphne, Andro-meda, Ledum and other heaths together with Sphagnum form the dominant vegeta-tion. New York have great masses of marl under them. Such a one is nearPeterboro in Madison County and another on Gorham Creek in On-tario County. Here it is apparent that some agency changed thecomposition of the water to such an extent that oxylophytes foundconditions congenial. The most extensive marl ponds in the region are in the vicinityof the limestone belt of central New York. They occur at WestJunius in Seneca County and southwest of Rochester, especially atBergen in Genessee County. Isolated and much smaller marl ponds ROWLEE: RELATION OF MARL PONDS AND PEAT BOGS 413 occur at Tully and near Cortland. The limestone outcrop in theseregions accounts for a continuous supply of water impregnated withlime.
Size: 1902px × 1314px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1918
