. Research methods in ecology. Plant ecology. i68 THE FORMATION 208. The chart used is a decimeter square, and the scale is consequently 10 :i. It is outlined on centimeter plotting paper, and the centimeter squares are numbered at the edges to correspond to the intervals of the quadrat, i. e., the top and bottom lines are numbered from left to right, and the side lines from top to bottom. These outlines are ruled in quantity and used as needed, or the forms can be furnished by the printer. In practice, a special quadrat book the size of the chart has been used. The need of a second book may b
. Research methods in ecology. Plant ecology. i68 THE FORMATION 208. The chart used is a decimeter square, and the scale is consequently 10 :i. It is outlined on centimeter plotting paper, and the centimeter squares are numbered at the edges to correspond to the intervals of the quadrat, i. e., the top and bottom lines are numbered from left to right, and the side lines from top to bottom. These outlines are ruled in quantity and used as needed, or the forms can be furnished by the printer. In practice, a special quadrat book the size of the chart has been used. The need of a second book may be avoided lay outlining two charts on the plotting sheet, and filing the latter in the field record book. In the few cases where 2-meter quadrats are desir- able, four charts are used, care being taken to label them so that they can be combined whenever necessary. Ten-meter quadrats are recorded on the deci- meter chart also, each meter interval corresponding to a centimeter, i. e., the scale is Fig. r<l. Permanent chart quadrat, Andosacile, Carex-Campanula- coryphium. 209. Mapping is invariably begun at the upper left-hand corner of the chart, and is carried across the strip marked off by the plotting tape, deci- meter by decimeter. As soon as this strip is completed, a second one is formed by moving the top tape to a position one decimeter below the plotting tape, which then becomes the upper one. This is repeated until the last strip is reached. Little difHculty is experienced in locating each plant exactly, as. 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 Clements, Frederic E. (Frederic Edward), 1874-1945. Lincoln, Neb. , University Pub. Co.
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