Until much more advance has been made by ecologists in the investigation of the nature of habitat factors, and until the effect of the factors on the plants has been more closely investigated by physiologists, it will remain impossible to place ecology on a physiological basis: all that is possible at present is to give a physiological bias to certain aspects of ecological research. [Please select]
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Many ecologists and phytogeographers have postulated that savannas are either man made or are examples of a fire climax. [Please select]
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As a result, there is but little concrete information as to the precise boundaries between the forests and grasslands, and opinions differ among ecologists. [Please select]
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Although there were no ecologists among the first settlers in Kansas, occasional glimpses of the region's ecology are afforded by the writings of early residents who mentioned native plant and animal life from time to time. [Please select]
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