Examination of diatom-based changes from a climatically sensitive prairie lake (Saskatchewan, Canada) at different temporal perspectives

Laird, Kathleen R.; Michels, Astrid; Stuart, C. T.; Wilson, Susan E.; Last, William M.; Cumming, Brian F.

doi:10.1016/j.quascirev.2007.09.009

Cited by 13 publications

(16 citation statements)

References 42 publications

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“…Despite a cooling trend and higher effective moisture, a variety of proxy climate data indicate that severe droughts affected much of the western United States and the Great Plains during the last few thousand years (e.g. Laird et al, 1996Laird et al, , 1998Laird et al, , 2007Woodhouse and Overpeck, 1998;Forman et al, 2001;Daniels and Knox, 2005). The dominant moisture fluctuations documented in this study appear to have affected a large portion of mid-continental U.S. over the last 4000 years.…”

Section: Other Records From the Great Plains And Western Usmentioning

confidence: 58%

A regional-scale climate reconstruction of the last 4000 years from lakes in the Nebraska Sand Hills, USA

Schmieder

Fritz

Swinehart

et al. 2011

Quaternary Science Reviews

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Section: Other Records From the Great Plains And Western Usmentioning

confidence: 58%

A regional-scale climate reconstruction of the last 4000 years from lakes in the Nebraska Sand Hills, USA

Schmieder

Fritz

Swinehart

et al. 2011

Quaternary Science Reviews

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“…Indeed, the planktic diatom Cyclotella meneghiniana, which has a subsaline affinity, is dominant in this group. C. meneghiniana is a common species in the lakes of the NGP throughout the Holocene (Fritz et al, 1993(Fritz et al, , 2000Laird et al, 2007) and has been observed to bloom in the late summer in Kettle Lake (J. E. Saros, personal communication, 2010), presum ably during periods of strong stratification, conditions that are common in this genus (Bradbury, 1988;Winder et al, 2009). C. meneghiniana is also an efficient user of Si and generally has a low Si:P requirement (Tilman and Kilham, 1976).…”

Section: Diatom Groupmentioning

confidence: 99%

Environmental history of a closed-basin lake in the US Great Plains: Diatom response to variations in groundwater flow regimes over the last 8500 cal. yr BP

et al. 2011

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Sediment records from closed-basin lakes in the Northern Great Plains (NGP) of North America have contributed significantly to our understanding of regional paleoclimatology. A high-resolution (near decadal) fossil diatom record from Kettle Lake, ND, USA that spans the last 8500 cal. yr BP is interpreted in concert with percent abundance of aragonite in the sediment as an independent proxy of groundwater flow to the lake (and thus lake water level). Kettle Lake has been relatively fresh for the majority of the Holocene, likely because of the coarse substrata and a strong connection to the underlying aquifer. Interpretation of diatom assemblages in four groups indicative of low to high groundwater flow, based on the percent of aragonite in sediments, allow interpretations of arid periods (and probable meromictic lake conditions) that could not be detected based on diatom-based salinity reconstructions alone. At the centennial–millennial scale, the diatom record suggests humid/wet periods from 8351 to 8088, 4364 to 1406 and 872 to 620 cal. yr BP, with more arid periods intervening. During the last ~ 4500 years, decadal–centennial scale periods of drought have taken place, despite the generally wetter climate. These droughts appear to have had similar impacts on the Kettle Lake hydrology as the ‘Dust Bowl’ era droughts, but were longer in duration.

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“…In northern Illinois, Nelson et al (2006) found two periods of increased aridity and prairie expansion: the first from 9,000 to 7,500 years cal BP, the second after 6,000 cal BP. There is only a single period of prairie expansion in Minnesota, from roughly 8,000 to 4,000 cal BP (Camill et al, 2003;Wright et al, 2004), similar to the period of maximum aridity from ~8,300 and 4,500 cal BP in the Canadian northern Great Plains (Laird et al, 2007). This warm, arid period, the Holocene Thermal Maximum (HTM), began in south-central Canada between ~9000 cal BP (10,500 depending on the site) and ended about 6,000 cal BP (Anderson et al, 1989;Ritchie and Harrison, 1993;Vance et al, 1995;Laird et al, 2007).…”

Section: Introductionmentioning

confidence: 98%

“…There is only a single period of prairie expansion in Minnesota, from roughly 8,000 to 4,000 cal BP (Camill et al, 2003;Wright et al, 2004), similar to the period of maximum aridity from ~8,300 and 4,500 cal BP in the Canadian northern Great Plains (Laird et al, 2007). This warm, arid period, the Holocene Thermal Maximum (HTM), began in south-central Canada between ~9000 cal BP (10,500 depending on the site) and ended about 6,000 cal BP (Anderson et al, 1989;Ritchie and Harrison, 1993;Vance et al, 1995;Laird et al, 2007). The HTM is characterized by lower lake levels regionally (Ritchie and Harrison, 1993), indicating less precipitation than present from autumn to spring (Grimm, 2001).…”

Section: Introductionmentioning

confidence: 98%

Multiproxy lake sediment records at the northern and southern boundaries of the Aspen Parkland region of Manitoba, Canada

2009

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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 210Pb and 14C (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 (~8,600 cal BP). These sites were characterized as prairie communities with low fire severity and relatively low lake productivity during the warm, dry period from 9,000-6,000 cal BP. Beginning around 6,500 cal BP at Jones Lake and 3,400 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.

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Examination of diatom-based changes from a climatically sensitive prairie lake (Saskatchewan, Canada) at different temporal perspectives

Cited by 13 publications

References 42 publications

A regional-scale climate reconstruction of the last 4000 years from lakes in the Nebraska Sand Hills, USA

A regional-scale climate reconstruction of the last 4000 years from lakes in the Nebraska Sand Hills, USA

Environmental history of a closed-basin lake in the US Great Plains: Diatom response to variations in groundwater flow regimes over the last 8500 cal. yr BP

Multiproxy lake sediment records at the northern and southern boundaries of the Aspen Parkland region of Manitoba, Canada

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