Zobrazeno 1 - 10
of 15
pro vyhledávání: '"R W Mathewes"'
Autor:
R. E. Vance, R. W. Mathewes
Publikováno v:
Canadian Journal of Botany. 72:539-548
Comparisons between current vegetation patterns and deposition of modern pollen and plant macroremains in a saline lake basin on the northern Great Plains are used to assess the value of plant remains as indicators of past local vegetation dynamics a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e4e9b2af042542c8eff60545b9a7c2a
https://doi.org/10.1139/b94-072
https://doi.org/10.1139/b94-072
Autor:
Ian R. Walker, R. W. Mathewes
Publikováno v:
Journal of Paleolimnology. 2:19-22
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::547ce27ca45660207fb4cccffa621c1a
https://doi.org/10.1007/bf00156981
https://doi.org/10.1007/bf00156981
Autor:
R. W. Mathewes, G. E. Rouse
Publikováno v:
Canadian Journal of Earth Sciences. 12:745-756
The postglacial history of vegetation in the Yale area of the lower Fraser River Canyon is described from sediments of two lakes using percentage pollen analysis supplemented with macrofossil evidence and radiocarbon dating. Deposition of postglacial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23ed2e2874af47950ea637bc99ad5c1f
https://doi.org/10.1139/e75-065
https://doi.org/10.1139/e75-065
Autor:
R. W. Mathewes, D. C. Mahon
Publikováno v:
Bulletin of Environmental Contamination and Toxicology. 30:575-581
The aquatic environment is very sensitive to the pertubations which may accompany the mining of metals. Slight alterations in the loading of chemicals in freshwater systems are frequently reflected in large changes in the transfer of contaminants to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::042040dc14b5b7dedb3e2aa2a317886a
https://doi.org/10.1007/bf01610177
https://doi.org/10.1007/bf01610177
Autor:
D. C. Mahon, R. W. Mathewes
Publikováno v:
Canadian Journal of Soil Science. 63:281-290
The accumulation of four naturally occurring radionuclides of the 238U series, uranium, 226Ra, 210Pb and 210Po, in 15 species of native plants was investigated. Of the plants sampled some accumulated, but none concentrated uranium or 226Ra. Grouseber
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::052cf9277729f7caff74e1a45391c8ef
https://doi.org/10.4141/cjss83-028
https://doi.org/10.4141/cjss83-028
Publikováno v:
Canadian Journal of Earth Sciences. 9:1055-1057
Three new radiocarbon dates from two lakes near Yale, B.C. establish that ice-free conditions existed in parts of the Lower Fraser Canyon as early as 11 430 ± 150 B.P. A volcanic ash layer found in both lakes is considered to have come from the Moun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48c63ff184a938feb904287a8f4cb7bf
https://doi.org/10.1139/e72-089
https://doi.org/10.1139/e72-089