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Filter Total Items: 3377

Geographic and temporal variation in the diet of Yellow-headed Blackbirds

Yellow-headed Blackbirds (Xanthocephalus xanthocephalus) are presumed predators of sunflower (Helianthus annuus) in the northern Great Plains. Their esophageal contents varied temporally and among three provinces and three states in relation to regional agricultural bases but males contained more sunflower and small grains than females whereas females contained more weed seeds and insects than mal
Authors
Daniel J. Twedt, William J. Bleier, George M. Linz

The measurement of mangrove characteristics in southwest Florida using spot multispectral data

An intensive in situ sampling program near Marco Island, Florida during 19–23 October 1988 collected information on mangrove type, maximum canopy height, and percent canopy closure. These data were correlated with selected vegetation index information derived from analysis of SPOT multispectral (XS) data obtained on 21 October 1988. The Normalized Difference (ND) vegetation index information was t
Authors
John R. Jensen, Hongyue Lin, Xinghe Yang, Elijah Ramsey III, Bruce M. Davis, Chris W. Thoemke

Fishes

No abstract available.
Authors
Noel M. Burkhead, R.E. Jenkins

Additions to the ichthyofauna of the Bahama Islands, with comments on endemic species

Literature records or other documentation are given for 57 species of shorefishes added to the Bahaman ichthyofauna since publication of Fishes of the Bahamas; included are 32 new species described or discovered since 1967. Known distribution is specified for each species, including extralimital ranges of non-endemics. Fourteen species are listed as known only from the Bahamas although some likely
Authors
William F. Smith-Vaniz, Eugenia B. Bohlke

Fire regimes in subtropical south Florida

No abstract available.
Authors
James R. Snyder

Control of pest species: Tree shelters help protect seedlings from nutria

Various methods of nutria preventative techniques were tested in attempts to curb the loss of seedlings due to nutria capturing. The results of testing possibly indicate that tree shelters have real potential for use in forest restoration projects on sites with moderate nutria populations. Tree shelters may even prove effective on sites with high nutria populations, as long as alternative food sup
Authors
J. A. Allen, R. Boykin

Suggestions to authors of the reports of the United States Geological Survey

Suggestions to Authors (STA) is used as the writing style guide for the U.S. Geological Survey (USGS) technical reports and maps. The STA is widely distributed in paper outside of the USGS as a basic scientific writing style guide for scientists, students, and editors. The goal of STA is to help writers present information as clearly as possible explaining punctuation rules, suggesting phrasing, a

Common and scientific names of fishes from the United States and Canada: Appendix 2, Exotic Fishes

Abstract not supplied at this time
Authors
W.R. Courtenay, Dawn P. Jennings, J.D. Williams