Holocene paleoenvironments in southeastern Minnesota – chasing the prairie-forest ecotone
نویسندگان
چکیده
منابع مشابه
Holocene paleoenvironments in southeastern Minnesota ^ chasing the prairie-forest ecotone
This paper uses a multi-proxy approach involving pollen, plant macrofossils, speleothem isotopes, and alluvial history of streams to reconstruct the history of prairie expansion and contraction along the prairie-forest border of southeastern Minnesota, USA. Early Holocene forests were replaced by prairie along this border, but eastward expansion of prairie stalled for 2000 yr when the prairie-f...
متن کاملResponse of C3 and C4 plants to middle-Holocene climatic variation near the prairie-forest ecotone of Minnesota.
Paleorecords of the middle Holocene (MH) from the North American mid-continent can offer insights into ecological responses to pervasive drought that may accompany future climatic warming. We analyzed MH sediments from West Olaf Lake (WOL) and Steel Lake (SL) in Minnesota to examine the effects of warm/dry climatic conditions on prairie-woodland ecosystems. Mineral composition and carbonate del...
متن کاملPatterns and drivers of Holocene vegetational change near the prairie-forest ecotone in Minnesota: revisiting McAndrews' transect.
Holocene vegetational dynamics along the prairie-forest border of Minnesota were first documented in McAndrews' classic work. Despite numerous subsequent paleo-studies, a number of questions remain unanswered about the vegetation history of the region. Here, pollen, stable-isotope, mineral, and charcoal data are described from three lakes near McAndrews' sites. These data were compared with oth...
متن کاملRapid responses of the prairie-forest ecotone to early Holocene aridity in mid-continental North America
Article history: The prairie-forest transition Received 20 June 2008 Accepted 31 October 2008 Available online 17 November 2008
متن کاملInfluence of resource availability on Juniperus virginiana expansion in a forest–prairie ecotone
Woody plant expansion into grasslands and savannas is a global concern. Rapid expansion of Juniperus virginiana, a tree native to North America, has profound ecological consequences. We used transplanted J. virginiana seedlings to investigate the role of resource availability on J. virginiana expansion following the removal of fire, the factor historically limiting range expansion of this firei...
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ژورنال
عنوان ژورنال: Palaeogeography, Palaeoclimatology, Palaeoecology
سال: 2002
ISSN: 0031-0182
DOI: 10.1016/s0031-0182(01)00354-6