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Some Ecological Notes On The Alpine Tundra In The Area Of The Juneau Ice Field, Richard T. Ward
Some Ecological Notes On The Alpine Tundra In The Area Of The Juneau Ice Field, Richard T. Ward
Proceedings of the Iowa Academy of Science
During the summer of 1949 an introductory study of the vegetation of nunataks and peripheral tundra areas of the Juneau Ice Field was made. The field work constituted a part of the Juneau Ice Field Research Project, which in addition to ecology includes investigations in the fields of geology, glaciology, meteorology, seismology, and cartography. Except for a small plant collection made by a reconnaissance party in the previous summer, the vegetation of this ice field was virtually unknown, as were in fact the other scientific aspects. The expedition of 1949 was the first group to spend an entire summer on …
Age And Growth Of River Carpsucker In Des Moines River, Iowa, Marvin Buchholz
Age And Growth Of River Carpsucker In Des Moines River, Iowa, Marvin Buchholz
Proceedings of the Iowa Academy of Science
Although the northern river carpsucker, Carpiodes carpio carpio (Rafmesque), is one of the more abundant species of fish in the Des Moines River, it is not a well known fish. Few laymen are acquainted with it. Precise information on its life history is limited, and its ecological role has not been determined. The river carpsucker is rarely utilized by commercial or sport fishermen and for this reason is usually classified as a rough fish. A few carpsuckers enter the commercial fishery of the Mississippi River (Barnickol and Starrett, 1951) . Some are taken by sport fishermen using extra small hooks …