A 31,000 year record of paleoenvironmental and lake-level change from Harding Lake, Alaska, USA

Finkenbinder, Matthew S.; Abbott, Mark B.; Edwards, Mary E.; Langdon, Catherine; Steinman, Byron A.; Finney, Bruce P.

doi:10.1016/j.quascirev.2014.01.005

Cited by 41 publications

(36 citation statements)

References 46 publications

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“…The proxy data from Burial Lake spanning the early to late Holocene are consistent with regional-wide evidence for high and generally stable lake levels (Abbott et al, 2000;Finkenbinder et al, 2014), soil development and stabilization (Hu et al, 2001), and increasing and higher levels of aquatic and terrestrial productivity (Hu et al, 2001Kaufman et al, 2003;Finney et al, 2012;Finkenbinder et al, 2014). For instance, biogenic silica displays large fluctuations and varies from~6 to~18 (wt.…”

Section: The Early Holocene To the Present (Ad 2010)supporting

confidence: 69%

“…These intermediate sea levels would have reduced the extent of subaerial Bering Sea continental shelf exposure compared with the LGM lowstand. As a result, the transport distance of moisture-laden air masses from the North Pacific Ocean traveling towards Alaska would have been similar to that during the Lateglacial transition (14,000e16,000 cal yr BP) where notable increases in effective moisture and higher lake-levels are reported across interior and northern Alaska (Abbott et al, 2000;Mann et al, 2002;Finkenbinder et al, 2014;Gaglioti et al, 2014).…”

Section: The Mid-wisconsin Interstadial (37200e29600 Cal Yr Bp)mentioning

confidence: 82%

“…Relatively high lake-levels and increased effective moisture levels occur between 12,500 and 11,000 14 C yr BP and after 10,000 14 C yr BP, while falling and lower lake-levels with decreased effective moisture occur between 11,000 and 10,000 14 C yr BP (Mann et al, 2002). In addition, core-transect based lake-level reconstructions from Birch Lake (Abbott et al, 2000) and Harding Lake (Finkenbinder et al, 2014) in the interior of Alaska (Fig. 1) show relatively higher but variable lake-levels with increased effective moisture between 15,000 and 9000 cal yr BP, compared with LGM conditions.…”

Section: The Lateglacial and Early Holocene Thermal Maximum (16500e8mentioning

confidence: 97%

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A multi-proxy reconstruction of environmental change spanning the last 37,000 years from Burial Lake, Arctic Alaska

Finkenbinder

Abbott

Finney

et al. 2015

Quaternary Science Reviews

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a b s t r a c tSediment cores from Burial Lake located in the western Brooks Range in Arctic Alaska record paleoenvironmental changes that span the last 37,000 calendar years before present (cal yr BP). We identified four distinct lithologic subunits based on physical properties (dry bulk density, magnetic susceptibility), sediment composition, and geochemical proxies (organic matter, biogenic silica, C/N, organic matter d 13 C and d 15 N, and elemental data from scanning X-ray fluorescence). The multi-proxy approach and relatively high temporal resolution (at multi-decadal to centennial time scales) of our proxy analysis, compared with previous studies of intermediate water depth cores from Burial Lake, provide new insights into the paleoenvironmental history of the region spanning the period prior to the Last Glacial Maximum. Relatively high lake-levels and gradually decreasing in-lake and terrestrial productivity occur during the mid-Wisconsin interstadial from 37,200 to 29,600 cal yr BP. The subsequent period is defined by falling and lower lake-levels with decreasing effective-moisture, windier conditions, and sustained low aquatic productivity throughout the LGM between 29,600 and 19,600 cal yr BP. The last deglaciation that commenced by 19,600 cal yr BP is characterized by gradual changes in several sediment physical and geochemical proxies, including increasing C/N ratios and terrestrial productivity, decreasing magnetic susceptibility and clastic sediment flux, along with rising and relatively higher lake-levels. A decrease in aeolian activity after 16,500 cal yr BP is inferred from the appearance of fine (very fine sandy silt) sediment, compared to coarse sediments through the LGM and last deglaciation. The highest levels of terrestrial inputs along with increasing and variable aquatic productivity occur during the Lateglacial to early Holocene interval between 16,500 and 8800 cal yr BP. The absence of multi-proxy evidence for a strong climatic reversal during the Younger Dryas from Burial Lake sediments contrasts with some paleorecords showing cooler temperatures and/or dry conditions in northern Alaska at this time. Peak levels of sediment organic content and terrestrial productivity at Burial Lake between 10,500 and 9900 cal yr BP coincide with the early Holocene summer insolation maxima, which likely represents summertime warming and an enhanced flux of watershed derived organic matter from permafrost degradation. The remainder of the Holocene (since 8800 cal yr BP) at Burial Lake is characterized by relatively high and stable lake levels, landscape stabilization, and relatively high and variable levels of aquatic productivity.

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Section: The Early Holocene To the Present (Ad 2010)supporting

confidence: 69%

Section: The Mid-wisconsin Interstadial (37200e29600 Cal Yr Bp)mentioning

confidence: 82%

Section: The Lateglacial and Early Holocene Thermal Maximum (16500e8mentioning

confidence: 97%

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A multi-proxy reconstruction of environmental change spanning the last 37,000 years from Burial Lake, Arctic Alaska

Finkenbinder

Abbott

Finney

et al. 2015

Quaternary Science Reviews

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“…The ratio between rainforest and sclerophyll plant taxa (rainforest:sclerophyll) was calculated from the land‐cover data published in Mariani et al () prior to the elaboration of statistics (see below). From the same data set, Isoëtes , a littoral macrophyte, spore abundances were considered as proxy for aquatic conditions, such as lake level and light penetration variation (Bogotá‐A et al, ; Chappuis et al, ; Finkenbinder et al, ; Pesce & Moreno, ; Simi et al, ).…”

Section: Methodsmentioning

confidence: 99%

Biogeochemical Responses to Holocene Catchment‐Lake Dynamics in the Tasmanian World Heritage Area, Australia

et al. 2018

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Environmental changes such as climate, land use, and fire activity affect terrestrial and aquatic ecosystems at multiple scales of space and time. Due to the nature of the interactions between terrestrial and aquatic dynamics, an integrated study using multiple proxies is critical for a better understanding of climate‐ and fire‐driven impacts on environmental change. Here we present a synthesis of biological and geochemical data (pollen, spores, diatoms, micro X‐ray fluorescence scanning, CN content, and stable isotopes) from Dove Lake, Tasmania, allowing us to disentangle long‐term terrestrial‐aquatic dynamics through the last 12 kyear. We found that aquatic dynamics at Dove Lake are tightly linked to vegetation shifts dictated by regional hydroclimatic variability in western Tasmania. A major shift in the diatom composition was detected at ca. 6 ka, and it was likely mediated by changes in regional terrestrial vegetation, charcoal, and iron accumulation. High rainforest abundance prior ca. 6 ka is linked to increased terrestrially derived organic matter delivery into the lake, higher dystrophy, anoxic bottom conditions, and lower light penetration depths. The shift to a landscape with a higher proportion of sclerophyll species following the intensification of El Niño‐Southern Oscillation since ca. 6 ka corresponds to a decline in terrestrial organic matter input into Dove Lake, lower dystrophy levels, higher oxygen availability, and higher light availability for algae and littoral macrophytes. This record provides new insights on terrestrial‐aquatic dynamics that could contribute to the conservation management plans in the Tasmanian World Heritage Area and in temperate high‐altitude dystrophic systems elsewhere.

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“…Thus, primary succession processes are dominated by accumulation of organic matter during the Holocene (Mourier et al, 2010), and sometimes much longer timescales (Finkenbinder et al, 2014), but the rates and controls of these processes are largely unknown. Trajectories of both eutrophication and dystrophication have been observed on Holocene timescales in sediments of oligotrophic lakes (Oldfield et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Ecosystem development following deglaciation: A new sedimentary record from Devils Lake, Wisconsin, USA

Williams

McLauchlan

Mueller

et al. 2015

Quaternary Science Reviews

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Processes and rates of ecosystem development can be reconstructed using lacustrine sedimentary sequences, but this approach often requires records that contain the start of primary succession. Most lakes in the upper Midwestern U.S. were formed by glaciers at the end of the last Ice Age approximately 11,700 cal yr BP. Devils Lake, Wisconsin is a rare example of a lake from this region whose sediments extend into the Pleistocene and may include the Last Glacial Maximum. Sediment magnetic, geochemical, pollen, and charcoal records were generated from a 10 m core whose basal sediments may be 28,000 years old. Together with a previously published pollen record, these proxies combine to reveal a history of long-term climatic, vegetative and geologic change during the late Pleistocene to Holocene. We identify six sedimentary units that indicate a series of consecutive events rather than a predictable trajectory of ecosystem development at the site. Productivity in the lake was low during the late Pleistocene and increased during the Holocene, as reflected by the sediment lithology, which shows a sudden shift from glacial vivianite-rich and organic-poor clastic-dominated sediments to Holocene diatomaceous sapropels. Several important processes initiated around 17,000 cal yr BP, including the onset of organic matter accumulation and fire in the terrestrial ecosystem. However, the post-glacial landscape was not devoid of vegetation because pollen assemblages indicate that terrestrial vegetation, likely a spruce tundra, survived near the site. A switch to a hardwood forest period during the Holocene also led to a change in the fire regime, with increased frequency of burning. Aquatic ecosystem productivity lagged terrestrial ecosystem productivity throughout the record. Nutrient cycling (as recorded by sedimentary ?15N) was variable but not directional, and appeared to be correlated with climate conditions early in the record, and terrestrial ecosystem processes later in the record. Throughout the Holocene magnetic mineral concentration decreased as productivity increased, and the source of magnetic material shifted from almost exclusively lithogenic to approximately 50% derived from soil or biogenic sources. Magnetic grain size, Ambrosia pollen percentages, and charcoal concentration increased and ?15N decreased in the most recent part of the record, due to anthropogenic influence in the region including agricultural activities.authorsversionPeer reviewe

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A 31,000 year record of paleoenvironmental and lake-level change from Harding Lake, Alaska, USA

Cited by 41 publications

References 46 publications

A multi-proxy reconstruction of environmental change spanning the last 37,000 years from Burial Lake, Arctic Alaska

A multi-proxy reconstruction of environmental change spanning the last 37,000 years from Burial Lake, Arctic Alaska

Biogeochemical Responses to Holocene Catchment‐Lake Dynamics in the Tasmanian World Heritage Area, Australia

Ecosystem development following deglaciation: A new sedimentary record from Devils Lake, Wisconsin, USA

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