Holocene history of Lake of the Woods: Ontario, Manitoba, and Minnesota
01 Jan 2018-Geological Society of America Bulletin (Geological Society of America)-Vol. 130, pp 3-23
About: This article is published in Geological Society of America Bulletin.The article was published on 2018-01-01. It has received 8 citations till now. The article focuses on the topics: Holocene.
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TL;DR: Geomorphic analysis and optically stimulated luminescence (OSL) ages from undated Lake Agassiz beaches and adjacent fluvial sediments on Riding Mountain in Manitoba provide insight into their early history as discussed by the authors.
29 citations
Cites background from "Holocene history of Lake of the Woo..."
...…climate would have resulted in higher moisture contents, (2) the mid-Holocene climate was drier and warmer as indicated by numerous paleoenvironmental studies across the region (e.g., Laird et al., 1996; Last and Teller, 2004; Grimm et al., 2011; Teller et al., 2018), and (3) modern precipitation....
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TL;DR: Anderson et al. as mentioned in this paper introduced the Lake of the Woods (LOW), a waterbody of current and historical significance that spans the borders between Minnesota and the Canadian provinces of Ontario and Manitoba.
Abstract: Anderson JP, Paterson AM, Reavie ED, Edlund MB, Ruhland, KM. 2017. An introduction to Lake of the Woods – from science to governance in an international water body. Lake Reserv Manage. 33:325–334.Lake of the Woods (LOW), a vast lake covering over 3850 km2, is a waterbody of current and historical significance that spans the borders between Minnesota and the Canadian provinces of Ontario and Manitoba. Over the past 2 decades, there has been concern for the water quality of LOW, sparked by anecdotal evidence of increased intensity and frequency of algal blooms by the public and resource managers. Minnesota's waters of LOW were declared impaired in 2008 due to exceedances of eutrophication criteria, initiating a Total Maximum Daily Load study. LOW's impairment declaration spurred several contrasting challenges and opportunities for water quality management across this diverse lake and basin. Governance challenges are emphasized by the large number of government agencies (>25) with land or water autho...
16 citations
Cites background from "Holocene history of Lake of the Woo..."
...Moreover, recent millennial-scale studies suggest that the lake is naturally, moderately productive (Teller et al. 2017)....
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TL;DR: In this article, historical changes in Holocene climate in northeastern Ontario were quantified using analyses of sedimentary pollen, diatoms, and pigments in a small boreal lake.
Abstract: Historical changes in Holocene climate in northeastern Ontario were quantified using analyses of sedimentary pollen, diatoms, and pigments in a small boreal lake. Modern analog reconstructions of a...
7 citations
Cites background from "Holocene history of Lake of the Woo..."
...Clastic or mineral-rich sedimentation is common in the early ontogeny of post-glacial boreal lakes (Liu, 1990; Teller et al., 2018) and is known to interrupt fossil preservation and signals of algal abundance when sedimentary organic matter is extremely low (Bunting et al., 2010; Leavitt and…...
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...Email: 16cacg@queensu.ca in regional hydrology (Klemm et al., 2016; Navarro et al., 2018; Teller et al., 2018)....
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TL;DR: In this paper, a high-resolution sedimentary sequence retrieved near Kenora, Ontario, and spanning at least the past ~11,000 years before present, was analyzed for multiple environmental proxies with an emphasis on diatom assemblage composition and spectrally-inferred chlorophyll a. These biological proxies indicate that northern LOW was relatively nutrient-rich soon after its isolation from glacial Lake Agassiz ~10,000
5 citations
References
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01 Jan 2001
TL;DR: In this article, a closed loop approach for time-lapse seismic monitoring is used for deblended data reconstruction using a closed-loop approach based on time lapse seismic monitoring.
Abstract: datapages browse by date datapages search and discovery 2018 deblended data reconstruction using a closed loop approach for time lapse seismic monitoring tomohide ishiyama mohammed y ali gerrit blacquire and shotaro nakayama 4232
1,153 citations
01 Jan 1964
TL;DR: In this article, the authors present an X-ray analysis of carbonate minerals, including sulfide, sulfate, and carbonate fraction data, and compare them with chemical analyses.
Abstract: -----------------------------------------Introduction.-------------------------------------X-ray analysis ________ --_--_--_----_________ ------Sample preparation and treatment _______________ _ Interpretation---------------------------------Whole rock data ___________________________ _ Carbonate minerals.--------_____ -----_ Disordered cristobalite _________________ _ Total clay minerals __ -------__________ _ Clay fraction data_------------__ ------__ _ Clay minerals present __ ----------------Comparison of X-ray peak sizes _________ _ Estimation of kaolinite and chlorite ______ _ Examples of interpretation __________________ _ ReproducibilitY------------------------------------Long-term reproducibility----__________________ _ Accuracy-comparison with chemical analyses _________ _ Sulfide, sulfate, and carbonate minerals ___________ _ Page
853 citations
TL;DR: This article examined the role that climate-mediated alterations in inter-related lake processes have played on diatom community composition, dynamics and size structure, with particular attention to the recent success of planktonic diatom species relative to heavier tychoplanktonic and small benthic diatoms.
Abstract: Algae, the dominant primary producers in many aquatic ecosystems, are critical to global biogeochemical cycling, and changes in their abundance and composition can cascade throughout aquatic food webs. Diatoms often dominate the algal communities in many freshwater systems. Their population dynamics are affected by a variety of environmental variables, many of which are linked to changes in water column properties and habitat availability, which themselves can be linked to shifts in ice cover, length of the growing season, thermal stability and stratification, vertical mixing patterns, habitat alterations, and the availability of resources such as light and nutrients. Climate has strong moderating controls on all of these fundamental aquatic processes, which can directly and indirectly alter species composition, abundance and seasonal dynamics of both periphytic and planktonic diatoms. In this review, we examine the role that climate-mediated alterations in inter-related lake processes have played on diatom community composition, dynamics and size structure, with particular attention to the recent success of planktonic diatom species relative to heavier tychoplanktonic and small benthic diatoms. We focus primarily on paleolimnological records, but also reference a wide spectrum of limnological and physiological studies to review and discuss how climate-driven shifts in lake properties may affect diatom assemblage reorganization. Understanding the limnological and historical context of these often complex diatom changes is key to making scientifically defensible interpretations of paleolimnological records. We further evaluate the plausibility of alternative explanations (e.g. atmospheric nitrogen deposition) for the recent success of small cyclotelloid species by examining trends in these planktonic diatoms from a large number of sites. Using a weight-of-evidence approach, we conclude that recent climate change is the main driver that has led to ecological tipping points resulting in the recent success of small planktonic diatoms that have been reported in many aquatic systems.
322 citations
TL;DR: In this paper, past lake-water salinity from fossil diatom assemblages were used to infer past climatic conditions at Moon Lake, a climatically sensitive site in the northern Great Plains.
Abstract: Estimates of past lake-water salinity from fossil diatom assemblages were used to infer past climatic conditions at Moon Lake, a climatically sensitive site in the northern Great Plains. A good correspondence between diatom-inferred salinity and historical records of mean annual precipitation minus evapotranspiration (P - ET) strongly suggests that the sedimentary record from Moon Lake can be used to reconstruct past climatic conditions. Century-scale analysis of the Holocene diatom record indicates four major hydrological periods: an early Holocene transition from an open freshwater system to a closed saline system by 7300 B.P., which corresponds with a transition from spruce forest to deciduous parkland to prairie and indicates a major shift from wet to dry climate; a mid-Holocene period of high salinity from 7300 to 4700 B.P., indicating low effective moisture (P - ET); a transitional period of high salinity from 4700 to 2200 B.P., characterized by poor diatom preservation; and a late Holocene period of variable lower salinity during the past 2,200 yr, indicating fluctuations in effective moisture.
213 citations
TL;DR: The lake Agassiz as discussed by the authors was the largest lake in North America during the last period of deglaciation, and the lake extended over a total of 1.5 × 10 6 km 2 before it drained at ca. 7.7 14 C ka (8.4 cal.
Abstract: Lake Agassiz was the largest lake in North America during the last period of deglaciation; the lake extended over a total of 1.5 × 10 6 km 2 before it drained at ca. 7.7 14 C ka (8.4 cal. [calendar] ka). New computer reconstructions—controlled by beaches, isostatic rebound data, the margin of the Laurentide Ice Sheet, outlet elevations, and a digital elevation model (DEM) of modern topographic data—show how variable the size and depth of this lake were during its 4000 14 C yr (5000 cal. yr) history. Abrupt reductions in lake level, ranging from 8 to 110 m, occurred on at least 18 occasions when new outlets were opened, reducing the extent of the lake and sending large outbursts of water to the oceans. Three of the largest outbursts correlate closely in time with the start of large δ 18 O excursions in the isotopic records of the Greenland ice cap, suggesting that those freshwaters may have had an impact on thermohaline circulation and, in turn, on climate.
199 citations