Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Keyword
Articles 1 - 7 of 7
Full-Text Articles in Entire DC Network
Wood And Leaf Anatomy Of Keckiella (Scrophulariaceae): Ecological Considerations, David C. Michener
Wood And Leaf Anatomy Of Keckiella (Scrophulariaceae): Ecological Considerations, David C. Michener
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
Soil Chemistry Relationships Of The Tecate Cypress In The Santa Ana Mountains, California, David E. Sottlemeyer, Earl W. Lathrop
Soil Chemistry Relationships Of The Tecate Cypress In The Santa Ana Mountains, California, David E. Sottlemeyer, Earl W. Lathrop
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
European Corn Borer Parasitoids; Distribution In Southern Minnesota, W. V. Winnie, D. D. Sreenivasam, H. C. Chiang
European Corn Borer Parasitoids; Distribution In Southern Minnesota, W. V. Winnie, D. D. Sreenivasam, H. C. Chiang
Journal of the Minnesota Academy of Science
During the 1940's and 1950's seven exotic parasitoids of the European corn borer (ECB) Ostrinia nubilalis (Hubner), were released in Minnesota. This study was done to determine which introduced parasitoids became established and their distribution in Minnesota. The experiment was conducted during the summer of 1977 and fall of 1977, 78, 79- and 80 in conjunction with the annual ECB population surveys in southern Minnesota by the State Department of Agriculture, Division of Plant Industry. Three introduced parasitoids, Macrocentrus grandii Goidanich, Eriborus Terebrans (Gravenhorst), and Sympiesis viridula (Thomson) and two native parasitoids, lshnus inquisitorius artricollaris (Walsh) and Aplomya caesar (Aldrich) …
Distribution Of Small Mammals On The Apostle Islands, Gail E. Kantak
Distribution Of Small Mammals On The Apostle Islands, Gail E. Kantak
Journal of the Minnesota Academy of Science
Five weeks of small mammal trapping on the Apostle Islands in 1978 yielded few captures. The low capture rate was attributed to low invasion rates and high extinction rates. Distribution records of small mammal species on individual islands were compiled from studies conducted as early as 1917. The distribution of many small mammal species on these islands remains largely undocumented, and further study is desirable before the patterns are disrupted by human activity.
Seasonal Abundance, Movement And Diversity Of Fishes In An Ozark Stream, Michael R. Dewey
Seasonal Abundance, Movement And Diversity Of Fishes In An Ozark Stream, Michael R. Dewey
Journal of the Arkansas Academy of Science
Seasonal fluctuations in fish abundance in Mud Creek occurred throughout the year at all sampling stations. At the two upper stations abundance was high and unstable during winter and early spring and decreased after heavy rainfall in mid-April. Abundance was low throughout the summer months, increasing in the fall due to large numbers of young-of-the-year. However, a different seasonal cycle occurred at the lower station which included deeper pools. Numbers were low and stable throughout the winter and early spring but high and unstable during the summer. Bigeye shiners (Notropis boops) and bluntnose minnows (Pimephales notatus) were the most mobile …
Classification And Protection Status Of Remnant Natural Plant Communities In Arkansas, William F. Pell
Classification And Protection Status Of Remnant Natural Plant Communities In Arkansas, William F. Pell
Journal of the Arkansas Academy of Science
A classification and inventory of Arkansas's remaining tracts of relatively undisturbed vegetation was initiated in 1979. Based on extensive literature surveys and field work, the classification includes five physiognomic classes, 17 cover classes, and 46 cover types, arranged hierarchically. High quality examples of ten of the cover types have been located in designated wilderness or state natural areas, where they are protected by law, while an additional three occur in research natural areas or Forest Service special interest areas. The remaining 33 cover types have no known long-term protection. Lands having wilderness, state natural area, research natural area, or special …
Larval Development Under Laboratory Conditions Of The Xanthid Mud Crab Eurytium Limosum (Say, 1818) (Brachyura: Xanthidae) From Georgia, Hiroshi Kurata, Richard W. Heard, Joel W. Martin
Larval Development Under Laboratory Conditions Of The Xanthid Mud Crab Eurytium Limosum (Say, 1818) (Brachyura: Xanthidae) From Georgia, Hiroshi Kurata, Richard W. Heard, Joel W. Martin
Gulf and Caribbean Research
Larvae of the xanthid mud crab Eurytium limosum were reared in the laboratory from hatching to first crab stage. Four zoeal stages and one megalops staged were obtained and are described. Complete larval development required about 15 days under culture conditions of 26.0° to 28.0°C and 25 ppt sea water. A long antenna and short antennal exopods consign E. limosum to the Group I xanthid zoeae of Rice (1980). The first stage zoea closely resembles that of Panopeus herbstii and is distinguished by having the dorsal spine strongly recurved at the extremity. Stages 2 to 4 are distinguished from Rhithropanopeus …