. Biological survey of the Mount Desert Region. Natural history -- Maine Mount Desert Island. THE INSECT FAUNA OF MOUNT DESERT, MAINE INTRODUCTION The study of the insect fauna of a given section, aside from its purely entomological importance, has great economic value in showing the relative distribution of the injurious species and their parasites. It also presents many biological features of general interest bearing on distribution, variation, the relation of insects to the flora, and other environmental conditions. The value of such a study is often greatly enhanced by being made in a regi
. Biological survey of the Mount Desert Region. Natural history -- Maine Mount Desert Island. THE INSECT FAUNA OF MOUNT DESERT, MAINE INTRODUCTION The study of the insect fauna of a given section, aside from its purely entomological importance, has great economic value in showing the relative distribution of the injurious species and their parasites. It also presents many biological features of general interest bearing on distribution, variation, the relation of insects to the flora, and other environmental conditions. The value of such a study is often greatly enhanced by being made in a region so favorably situated as to show- clearly many of the factors governing distribution. In this respect there are probably few places that equal Mount Desert. Situated on the southern edge of the area defined as the Canadian life zone or the most southern extension of the Boreal region and the most northern extension of the so-called Transitional zone of the Austral region, it forms a meeting- ground of the northern and southern species. As I am endeavoring in this paper to show as far as it is possible the relation of insects to the flora, I will first consider what the botanists say regarding plant distribution.^ "One of the most marked characteristics of the island flora is its not only strongly northern, but arctic character. On its coast, enveloped in cold fogs and washed by waters chilled by the arctic currents, it is no wonder that arctic plants like Montia fontana and Stellaria humifusa should find a congenial home. Moreover this character of the flora is shown by the fact that with one exception, Lycopodium selago, the mountain plants descend to the sea level. Neither on the one hand is the alti- tude of the mountain summits sufficient to develop an alpine ^"A preliminary catalogue of the plants growing on Mount Desert," by Ed- ward L. Eand and John H. Redfield, p. 20, Cambridge, Please note that these images are extracted from scanned page image
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