Zobrazeno 1 - 10
of 15
pro vyhledávání: '"S. I. Guttman"'
Autor:
S. I. Guttman, S. A. Fore
Publikováno v:
Canadian Journal of Botany. 74:1289-1297
We examined the spatial scale of genetic structure of Asclepias verticillata L. (whorled milkweed) populations in a landscape where suitable habitat is fragmented by woodlands to determine if the distance between patches influences genetic differenti
Autor:
R N, Silbiger, A C, Leonard, P, Dimsoski, S, Foré, S I, Guttman, A C, Roth, D A, Gordon, T, Wessendarp, G P, Toth, M K, Smith
Publikováno v:
Environmental toxicology and chemistry. 20(11)
Conservation biology needs sound biological information in order to maintain biological diversity in the face of the current rate of loss. An important component of the information needed is the level of genetic diversity within and between populatio
Publikováno v:
Ecotoxicology (London, England). 10(4)
Population genetic assessments were performed on populations of the mosquitofish, Gambusia affinis, sampled at seven sites along a 10 km reach of the upper San Antonio River in San Antonio, TX. Mosquitofish populations were sampled from the downtown
Autor:
S A, Foré, S I, Guttman
Publikováno v:
American journal of botany. 86(7)
We examined the spatial genetic structure of Helianthus occidentalis Riddell ssp. occidentalis Riddell (western sunflower) to determine whether this species is highly clonal and whether the distance between prairie patches influences genetic differen
Publikováno v:
Ecotoxicology and environmental safety. 30(1)
Biological sampling has been implemented to assess water quality in many states. The purpose of this study was to examine whether genetic diversity and structure of Pimephales notatus could serve as effective biomarkers of exposure to anthropogenic s
Publikováno v:
Ecotoxicology and environmental safety. 30(1)
Biological monitoring programs to assess contaminant-induced impacts in aquatic systems are being developed and implemented by several federal agencies and many states. Genetic diversity and allozyme frequency may be valuable indicators of such impac
Publikováno v:
Evolution. 56:2252
Publikováno v:
Journal of Herpetology. 24:163
Etude de la systematique des salamandres du genre Necturus par electrophorese sur gel d'amidon.L'analyse de 19 locus sur des echantillons de population de cinq especes de Necturus permet de clarifier plusieurs problemes taxonomiques.
Publikováno v:
Evolution. 44:629
Publikováno v:
Canadian Journal of Zoology. 58:1703-1707
Starch gel electrophoresis was used to examine the generic separation of the sphaeriid clams Musculium and Sphaerium. Twenty-five loci from 13 enzyme systems were resolved. Major differences in electrophoretic patterns were observed, and these appear