Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Robin L. Vannote"'
Publikováno v:
Journal of the North American Benthological Society. 16:46-50
AND F. H. BORMANN. 1989. Changes in the chemistry of surface waters. Environmental Science & Technology 23:137-143. FEDERER, C. A., L. D. FLYNN, C. W. MARTIN, J. W. HORNBECK, AND R. S. PIERCE. 1990. Thirty years of hydrometeorologic data at the Hubba
Publikováno v:
Journal of the North American Benthological Society. 13:3-18
Many mayfly species have synchronous univoltine life histories over broad geographic ranges, but the life-history adaptations underlying their seasonality remain unidentified. We investigated whether simple adaptations in the response of development
Autor:
G. Wayne Minshall, James R. Sedell, Robin L. Vannote, Robert C. Petersen, Thomas L. Bott, Colbert E. Cushing, Kenneth W. Cummins
Publikováno v:
Journal of the North American Benthological Society. 11:111-137
Studies were conducted at three locations in the Lower Salmon River, Idaho (USA) and at one Upper Salmon "calibration" site to extend results of previous research (headwater through 5-6th-order [1-814 links] streams) to an 8th-order (15,000 links) ri
Publikováno v:
Journal of the North American Benthological Society. 5:253-262
The population genetic structure of two species of mayflies was studied using protein electrophoresis at eight locations in the headwater region of the Delaware River drainage basin. Study sites were located upstream and downstream from two large res
Autor:
Bernard W. Sweeney, Robin L. Vannote
Publikováno v:
Ecology. 62:1353-1369
Comparative data are presented on feeding, growth, respiration, mortality, adult emer- gence and fecundity, egg development, and calorimetry for Ephemerella subvaria, E. dorothea, E. verisimilis, E. funeralis, E. serrata, and E. deficiens in White Cl
Publikováno v:
Annals of the Entomological Society of America. 80:600-612
We evaluated genetic variation in 40 populations (five species) of ephemerellid mayflies collected from streams in the Atlantic and Gulf drainages of eastern North America. The principal study species included Eurylophella funeralis (McDunnough), Eur
Autor:
Robin L. Vannote, Bernard W. Sweeney
Publikováno v:
The American Naturalist. 115:667-695
Adult body size and fecundity of several species of hemimetabolous aquatic insects were shown to depend largely on thermal conditions during larval growth. We suggest that an "optimum" thermal regime exists where adult size and fecundity are maximize
Autor:
Robin L. Vannote, Joanne W. Patterson
Publikováno v:
Environmental Entomology. 8:665-669
The generation time for most individuals of a Heteroplectron americanum population in a Delaware coastal plain stream is one yr. Full-grown male and female larvae attain a mean dry weight of 6.5 and 16.1 mg, respectively, by mid-Apr. Pupation period
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 37:130-137
From headwaters to mouth, the physical variables within a river system present a continuous gradient of physical conditions. This gradient should elicit a series of responses within the constituent populations resulting in a continuum of biotic adjus
Autor:
Robin L. Vannote, Bernard W. Sweeney
Publikováno v:
Ecology. 67:1396-1410
The natural influx of leaf litter from a hardwood forest to sections of two spring seeps and a spring brook was excluded for two years and replaced with equivalent amounts of leaves from speeific tree species. Larval growth, mortality, and productivi