Multiproxy lake sediment records at the northern and southern boundaries of the Aspen Parkland region of Manitoba, Canada
Bibliographic Data
| ID | 12264902 |
|---|---|
| Authors | Rebecca Teed (0000-0002-8570-6015, Earth and Environmental Sciences, Wright State University, Dayton OH 45435, USA, corresponding author), Charles Umbanhower (Department of Biology, Saint Olaf College, Northfield MN, USA), Philip Camill (0000-0002-3167-1582, Bowdoin College) |
| Year | 2009 |
| Volume | 19 |
| Issue | 6 |
| Pages | 937-948 |
| Publication date | 2009-08-14 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | The Holocene (JOURNAL) |
| Journal identifiers | ISSN: 0959-6836 • E-ISSN: 1477-0911 |
| Publisher | SAGE Publishing (PUBLISHER • US) |
| DOI | 10.1177/0959683609336569 |
| OpenAlex | W2058242110 |
| Language | EN |
| Citations received | 6 |
| References cited | 44 |
Aspen parkland in central Canada may change substantially with increased warming and aridity as prairies replace forests, fire return intervals decrease and lake levels decline. We examined the relationships among vegetation, climate, fire and lake-ecosystem properties using lake sediment cores from the current northern and southern boundaries of the aspen parkland in southwestern Manitoba. We analyzed pollen, charcoal, sediment magnetics, biogenic silica, phosphorus, grain size and LOI, and dated the cores using 210 Pb and 14 C (AMS, calibrated). The Jones Lake record, from the southern edge of the parkland, began considerably earlier (~11 000 cal. BP) than the Mallard Pond record at the northern edge (~8600 cal. BP). These sites were characterized as prairie communities with low fire severity and relatively low lake productivity during the warm, dry period from 9000 to 6000 cal. BP. Beginning around 6500 cal. BP at Jones Lake and 3400 cal. BP at Mallard Pond, conditions appeared to get wetter as indicated by arboreal pollen percentage increases from ~30% to 40— 60%, concurrent with a rise in charcoal and proxies for lake productivity (biogenic silica and percent organic phosphorus). Similar to previous studies along the prairie—forest border, we found that charcoal increased during warmer, wetter periods with increased forest cover and fuel loading rather than during warmer, drier periods of prairie dominance. Our results underscore the importance of regional changes in moisture, and its effects on lake levels and forest biomass, as a dominant control of the aspen parkland dynamics
Biogenic silica · Charcoal · Ecosystem · Geography · Hydrology (agriculture · Physical geography · Productivity · Sediment · Vegetation (pathology · Coastal wetland ecosystem dynamics · Environmental Science · Geological formations and processes · Geology and Paleoclimatology Research · Ecology · Geology
Changes in the prairie–forest ecotone in northwest Ontario (Canada) across the Holocene
Early holocene monsoonal fluctuations in the Garhwal higher Himalaya as inferred from multi-proxy data from the Malari paleolake
Pollen and charcoal studies at the Wolf Willow site, Wanuskewin Heritage Park, Saskatoon, Canada
Lakewater paleothermometry from Deep Lake, Minnesota during the deglacial–Holocene transition from combined δ18O analyses of authigenic carbonate and aquatic cellulose
Diatom-based evidence of regional aridity during the mid-Holocene period in boreal lakes from northwest Ontario (Canada)
Holocene human-environment interactions across the Northern American prairie-forest ecotone
Asymmetric vegetation responses to mid-Holocene aridity at the prairie–forest ecotone in south-central Minnesota
Sediment-magnetic signature of land-use and drought as recorded in lake sediment from south-central Minnesota, USA
Piston Corers for Peat and Lake Sediments
Numerical methods in quaternary pollen analysis
Biological evidence of multiple temporal and spatial scales of hydrological variation in the western interior of Canada
Chronology and geochemistry of late Holocene eolian deposits in the Brandon Sand Hills, Manitoba, Canada
Estimating the mass flux of charcoal from sedimentary records
The influence of biotic drivers on North American palaeorecords
Experimental production and analysis of microscopic charcoal from wood, leaves and grasses
Identification of Anthropogenic Burning in the Paleoecological Record of the Northern Prairies
INTCAL98 Radiocarbon Age Calibration, 24,000-0 cal BP
| Citations per year | 0.43 |
|---|---|
| Citation span | 2012 - 2023 (12) |
| Highly cited | No |