Zobrazeno 1 - 10
of 17
pro vyhledávání: '"J. C. Roff"'
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 49:2412-2422
Bacterial abundance, biomass, and heterotrophic production were measured in the water, sediment, and epilithon of forested and open streams in southern Ontario in summer 1988. Relationships of environmental variables to production were examined. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f57473912bcfbf8af9426d48d82fddf
https://doi.org/10.1139/f92-267
https://doi.org/10.1139/f92-267
Autor:
J. C. Roff, Leslie A. Chisholm
Publikováno v:
Marine Biology. 106:79-89
Weekly samples were collected near Kingston, Jamaica in 27 m vertical hauls, using 200 and 64µm mesh plankton nets, from July 1985 to January 1987. Thirtytwo copepod species were identified; nauplii and all copepodite stages were enumerated. Total c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41aed56a0eb0c14f8016b5d5cfe3d42b
https://doi.org/10.1007/bf02114677
https://doi.org/10.1007/bf02114677
Autor:
J. C. Roff, Leslie A. Chisholm
Publikováno v:
Marine Biology. 106:71-77
Nine genera of neritic tropical copepods were collected near Lime Cay, Jamaica, between July 1985 and January 1987. Length-weight regressions were derived for each genus (R2=0.74 to 0.98), for all calanoids combined (R2=0.88), and all cyclopoids comb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b32c4e16562a7aeb09dad4f0ba1a072
https://doi.org/10.1007/bf02114676
https://doi.org/10.1007/bf02114676
Publikováno v:
Advances in marine biology. 44
We present the most extensive study to date of globally compiled and analysed weight-specific growth rates in marine epi-pelagic invertebrate metazoan zooplankton. Using specified selection criteria, we analyse growth rates from a variety of zooplank
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::3735804a02a3112c542dc97126df58e1
https://pubmed.ncbi.nlm.nih.gov/12846041
https://pubmed.ncbi.nlm.nih.gov/12846041
Autor:
J. B. Foulds, J. C. Roff
Publikováno v:
Canadian Journal of Zoology. 54:377-385
When Mysis relicta was induced to swim at speeds of 1.0 and 1.6 cm/s, which are similar to observed vertical migration rates in Lake Ontario, there was no significant (P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68927cd3f522c3d0184781730355e0af
https://doi.org/10.1139/z76-042
https://doi.org/10.1139/z76-042
Publikováno v:
Canadian Journal of Zoology. 58:1355-1387
Zooplankton samples, usually together with morphometric, physical, and chemical data, were collected from 696 lakes in glaciated eastern North America between 1969 and 1978. Geographical distributions of the 44 Crustacea and 4 Diptera species suggest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78fb7d33e37d3ba1e5c699db0a82dcc3
https://doi.org/10.1139/z80-188
https://doi.org/10.1139/z80-188
Publikováno v:
Canadian Journal of Botany. 59:1793-1810
Phytoplankton samples from 130 stations in Hudson Bay taken during summer 1975 were examined. Diatoms formed the largest group of phytoplankton comprising 27 genera and 59 species, 24 of which are not previously recorded from Hudson Bay. Twelve gener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19018ae482c9a3d13fc9fcb4ebd82481
https://doi.org/10.1139/b81-240
https://doi.org/10.1139/b81-240
Publikováno v:
Journal of the Fisheries Research Board of Canada. 31:637-646
Production of the most abundant zooplankton in a polar lake was studied over 4 yr. Limnocalanus macrurus produced 261 mg m−2 yr−1 ash-free dry weight and Keratella cochlears produced 3 mg m−2 yr−1. Neither population fluctuated violently from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bade61770c66d4a3d610c52cc272d849
https://doi.org/10.1139/f74-095
https://doi.org/10.1139/f74-095
Publikováno v:
Marine Biology. 99:21-30
Ciliates in the waters surrounding the Isles of Shoals, Gulf of Maine were collected from May 1985 to August 1986 in sampling bottles, fixed in Bouin's solution, and quantitatively protargol stained. Cell abundance and biomass were separated into fou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d4be190654ff920d53033e114f41790
https://doi.org/10.1007/bf00644973
https://doi.org/10.1007/bf00644973
Autor:
R. E. Kwiatkowski, J. C. Roff
Publikováno v:
Canadian Journal of Zoology. 55:899-911
The zooplankton and zoobenthos were investigated in six lakes in the Sudbury area of Ontario in which pH values lay between 4.05 and 7.15. Zooplankton showed a significant reduction in species and numbers at the lower pH levels; the Rotifera showed t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a228c3008b4329a23c97c28447f7d344
https://doi.org/10.1139/z77-118
https://doi.org/10.1139/z77-118