. Elements of ecology. Ecology. 428 Succession and Fluctuation dispersal over a period of time. Even non-motile animals and plants are able to extend their ranges with surprising rapidity when condi- tions are suitable. Barriers. Against this insistant pressure for dispersal, barriers exist that retard or prevent the movement of certain species. Ecological r~^s^ ^ ^^J t—> • lY"^ SUMMER 1918 ^-^ '^X WINTER 1916-18 \ \). SUMMER 1921 WINTER 1919-21. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and a
. Elements of ecology. Ecology. 428 Succession and Fluctuation dispersal over a period of time. Even non-motile animals and plants are able to extend their ranges with surprising rapidity when condi- tions are suitable. Barriers. Against this insistant pressure for dispersal, barriers exist that retard or prevent the movement of certain species. Ecological r~^s^ ^ ^^J t—> • lY"^ SUMMER 1918 ^-^ '^X WINTER 1916-18 \ \). SUMMER 1921 WINTER 1919-21. 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 Clarke, George L. (George Leonard), 1905-. New York, Wiley
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Keywords: ., bookcentury1900, bookpublishernewyorkwiley, booksubjectecology
