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Diploid And Polyploid Cytotype Distribution In Melampodium Cinereum And M. Leucanthum (Asteraceae, Heliantheae), Tod F. Stuessy, Hanna Weiss-Schneeweiss, David J. Keil
Diploid And Polyploid Cytotype Distribution In Melampodium Cinereum And M. Leucanthum (Asteraceae, Heliantheae), Tod F. Stuessy, Hanna Weiss-Schneeweiss, David J. Keil
Biological Sciences
Previous chromosomal studies within Melampodium (Asteraceae, Heliantheae) of Mexico and Central America have documented chromosome numbers n = 9, 10, 11, 12, 18, 20, 23, 25 ± 1, 27, 30, and 33. Some species also have been shown to exhibit infra-and interpopulational polyploidy. The presence of cytotype mixtures is especially pronounced in the white-rayed complex, which occurs in the southwestern United States and adjacent Mexico. This group includes M. cinereum (n = 10 and 20), M. leucanthum (n = 10 and 20), and M. argophyllum (n = 30). Cytotype distribution has been newly analyzed in 415 plants from 152 populations …
Prehistoric Marine Mammal Overkill In The Northeastern Pacific: A Review Of New Evidence, Terry L. Jones, William R. Hildebrandt, Douglas J. Kennett, Judith F. Porcasi
Prehistoric Marine Mammal Overkill In The Northeastern Pacific: A Review Of New Evidence, Terry L. Jones, William R. Hildebrandt, Douglas J. Kennett, Judith F. Porcasi
Social Sciences
A model of prehistoric marine mammal overexploitation advanced by Hildebrandt and Jones (1992) for the northeastern Pacific has been challenged by Colten (1995) and Colten and Arnold (1998) who argue that diachronic patterns in faunal remains from California’s Channel Islands reflect climatically-induced decline in marine productivity and local socio-cultural developments not over predation. In this paper, we point out that some Channel Islands faunal trends are consistent with overexploitation, while others reflect methodological variation between studies. Newly available paleoenvironmental data raise questions about previous characterizations of late Holocene marine productivity, while new zooarchaeological findings from Monterey Bay, San Miguel and …
Grants And Contracts Awarded In Fiscal Year 2004, Grants Development Office
Grants And Contracts Awarded In Fiscal Year 2004, Grants Development Office
Grants Development Office Reports
No abstract provided.
Dietary Patterns And Prostate Cancer Risk In The National Health And Nutrition Examination Survey Epidemiological Follow-Up Study Cohort, Marilyn Tseng, Rosalind A. Breslow, Robert F. Devillis, Regina G. Ziegler
Dietary Patterns And Prostate Cancer Risk In The National Health And Nutrition Examination Survey Epidemiological Follow-Up Study Cohort, Marilyn Tseng, Rosalind A. Breslow, Robert F. Devillis, Regina G. Ziegler
Kinesiology and Public Health
Ecological studies implicate a “Western” diet in prostate cancer development, but whether dietary patterns measured in individuals are associated with risk has not been studied previously. We examined this issue using prospective data from the nationally representative United States Health Examination Epidemiological Follow-up Study. Among 3,779 men followed from 1982– 84 to 1992, 136 incident cases were identified. Using principal component analysis on responses to a 105-item dietary questionnaire, the following three distinct patterns were identified: a vegetable-fruit pattern; a red meat-starch pattern characterized by red meats, potatoes, cheese, salty snacks, and desserts; and a Southern pattern characterized by such …