Zobrazeno 1 - 10
of 32
pro vyhledávání: '"H. E. Welch"'
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 54:1772-1784
The Arctic cod (Boreogadus saida), a key component of the marine food web of Canadian high Arctic waters, occurs at temperatures close to or below zero. We established a complete energy budget for this Arctic fish, based on laboratory measurements of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9071fdeaf7dc0eaca6d5075a065c5acf
https://doi.org/10.1139/f97-086
https://doi.org/10.1139/f97-086
Autor:
H. E. Welch, J. Kalff
Publikováno v:
Journal of the Fisheries Research Board of Canada. 31:621-636
Phytoplankton production of ultraoligotrophic Char Lake and polluted Meretta Lake Oat. 74°42′N; long. 94°50′W) were studied between 1969 and 1972. Phytoplankton production in Char Lake is approximately 4.1 g C m−2 yr−1, making it the most o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9a46e731aa1dc7ca25b3e9792927729
https://doi.org/10.1139/f74-094
https://doi.org/10.1139/f74-094
Publikováno v:
Journal of the Fisheries Research Board of Canada. 31:585-607
Seasonal data for several physical and chemical variables in Char Lake are given. Annual cycles of major solutes are influenced primarily by freeze–thaw cycles. Concentrations of most substances are increased by freezing–out during the winter. Be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b412a565b5c3b97ba1d09eaabdace1fa
https://doi.org/10.1139/f74-092
https://doi.org/10.1139/f74-092
Publikováno v:
Bulletin of Environmental Contamination and Toxicology. 16:508-515
The toxicity of alkyldinitrophenols to juvenile Atlantic salmon increases with increasing octanol-water partition coefficient of these compounds. Some alkyldinitrophenols are extremely toxic to juvenile Atlantic salmon, larvae and adult lobsters, but
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30cfd87d0d3d4d3a1bb12eecc731aea4
https://doi.org/10.1007/bf01685356
https://doi.org/10.1007/bf01685356
Autor:
H. E. Welch, J. Kalff
Publikováno v:
Journal of the Fisheries Research Board of Canada. 31:609-620
Benthic photosynthesis and respiration was measured by in situ oxygen change and correlated with in situ radiation in ultraoligotrophic Char Lake Oat. 74°42′N). Photosynthesis by the moss and deep sediment zones was correlated with light but photo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b2e4e5eabafa17399b6713cf4160eea
https://doi.org/10.1139/f74-093
https://doi.org/10.1139/f74-093
Publikováno v:
Limnology and Oceanography. 25:100-113
The possible USC of buried pipelines to transport natural gas (-99% methane) through the Canadian arctic prompted us to study some of the dynamics of methane metabolism in an arctic lake at 63”38’N lat. The two basins of the lake were separated d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad6585ea4bfe324e6aa640b7886ed37b
https://doi.org/10.4319/lo.1980.25.1.0100
https://doi.org/10.4319/lo.1980.25.1.0100
Autor:
P. Ould, H. E. Welch
Publikováno v:
Canadian Journal of Zoology. 58:228-234
Mallard ducklings given a standardized inoculum of Echinuria uncinata and stressed by crowding or by injecting with cortisone retained greater numbers and larger nematodes at necropsy than infected nontreated controls. Stressed ducklings exhibited si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b44fd396285af4148356be3d1b46d197
https://doi.org/10.1139/z80-026
https://doi.org/10.1139/z80-026
Publikováno v:
Journal of the Fisheries Research Board of Canada. 31:647-662
Sewage from the Department of Transport Airport Base at Resolute Bay has caused increases in phytoplankton standing crop, changes in algal species composition, oxygen depletion, and disappearance of Limnocalanus in Meretta Lake. The annual cycles of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a48d0ab23e586cb773f3f80928b982d
https://doi.org/10.1139/f74-096
https://doi.org/10.1139/f74-096
Autor:
C. E. McKenzie, H. E. Welch
Publikováno v:
Canadian Journal of Zoology. 57:640-646
Seven trematode, three nematode, two cestode, one acanthocephalan, one protozoan, and three acarina species were recovered from 171 muskrats (Ondatra zibethica) taken in Manitoba. Thirty-one muskrats were examined for ectoparasites, 111 for endoparas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c56fa3d252123cbc922d9b8ddca3223
https://doi.org/10.1139/z79-075
https://doi.org/10.1139/z79-075
Autor:
H. E. Welch
Publikováno v:
Journal of the Fisheries Research Board of Canada. 33:227-247
The six common genera of Chironomidae (Diptera) in Char Lake, Resolute, Northwest Territories (74°42′N lat.) were studied intensively from 1969 to 1972. Heterotrissocladius oliveri and a Trissocladius species are characteristic of the sediment zon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7f720d37052c08aad1ec1bbcfa60f02
https://doi.org/10.1139/f76-034
https://doi.org/10.1139/f76-034