Zobrazeno 1 - 10
of 69
pro vyhledávání: '"PAUL A. DELCOURT"'
Publikováno v:
Quaternary Research. 57:225-233
Holocene sediments from Nelson Lake, on Michigan's eastern Upper Peninsula, provide isotopic, pollen, and charcoal evidence for a two-step sequence of changes in moisture source and increased lake-effect precipitation during the late Holocene. Betwee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adc085f8995cb0e44f8cf46ecf81a756
https://doi.org/10.1006/qres.2001.2308
https://doi.org/10.1006/qres.2001.2308
Autor:
Paul A. Delcourt, Hazel R. Delcourt
The synthesis presented in this volume is a direct outgrowth of our ten-year FORMAP Project (Forest Mapping Across Eastern North America from 20,000 yr B.P. to the Present). Many previous research efforts in paleoecology have used plant-fossil eviden
Publikováno v:
American Antiquity. 63:263-278
Fossil pollen assemblages from Cliff Palace Pond, Kentucky, characterize changes in forest composition through the past 9,500 years of the Holocene. Early-Holocene spruce and northern white cedar stands were replaced by mixed mesophytic forests after
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::168128b4f38c3073e940255d1f67f86d
https://doi.org/10.2307/2694697
https://doi.org/10.2307/2694697
Autor:
Hazel R. Delcourt, Paul A. Delcourt
Publikováno v:
Conservation Biology. 11:1010-1014
Fire suppression in the southern Appalachians is widely considered responsible for decreased regeneration in oak (Quercus) and fire-adapted species such as table mountain pine (Pinus rigida) and pitch pine (Pinus pungens) (Barden & Woods 1976; Harmon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1df28457c4b71367c814e4af683a332a
https://doi.org/10.1046/j.1523-1739.1997.96338.x
https://doi.org/10.1046/j.1523-1739.1997.96338.x
Autor:
Hazel R. Delcourt, Paul A. Delcourt
Publikováno v:
Engineering Geology. 45:219-242
In 1938, Clair A. Brown published his classic paleobotanical discoveries from the Tunica Hills of southeastern Louisiana, indicating ice-age plant migrations of more than 1100 km. Brown collected fossils of both boreal trees such as white spruce (Pic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f95c8a01de502a08dab2581884956b2c
https://doi.org/10.1016/s0013-7952(96)00015-4
https://doi.org/10.1016/s0013-7952(96)00015-4
Autor:
Hazel R. Delcourt, Paul A. Delcourt
Publikováno v:
Landscape Ecology. 11:363-381
General Land Office Survey (GLOS) records from the A.D. 1840s provide data for quantitative characterization of presettlement vegetation across western Mackinac County, Michigan, located within the mixed conifer-northern hardwoods forest region. We a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09ed6c74db71409ebe481e0ec1ddc27e
https://doi.org/10.1007/bf02447523
https://doi.org/10.1007/bf02447523
Publikováno v:
Quaternary Research. 45:321-326
A radiocarbon-dated series of 75 beach ridges, formed at regular intervals averaging 72 yr over the past 5400 yr, provides further support for the existence of a 70-yr oscillation in Northern Hemisphere climate, postulated recently from instrument da
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1462f7d2e9fd4b5d4e0a11dc470af000
https://doi.org/10.1006/qres.1996.0033
https://doi.org/10.1006/qres.1996.0033