Inductively coupled plasma - optical emission spectrometry of pond sediments, Copper River Delta, AK: collected in 2017, measured in 2022
High-latitude, coastal wetland biogeochemistry is dynamic in response to climate change, and yet we do not understand, and thus cannot fully predict, how crucial aspects of these systems will change in the future. Temperatures in the Northern Hemisphere have disproportionately increased 4° Celsius (...
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Arctic Data Center
2022
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Online Access: | https://doi.org/10.18739/A2804XM3V |
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dataone:doi:10.18739/A2804XM3V |
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Open Polar |
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Arctic Data Center (via DataONE) |
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dataone:urn:node:ARCTIC |
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topic |
ICP-OES Sediment High-latitude Freshwater |
spellingShingle |
ICP-OES Sediment High-latitude Freshwater Jessica Buser Erin Peck Peter Chase Laura Lapham Carmella Vizza Frederick Colwell Inductively coupled plasma - optical emission spectrometry of pond sediments, Copper River Delta, AK: collected in 2017, measured in 2022 |
topic_facet |
ICP-OES Sediment High-latitude Freshwater |
description |
High-latitude, coastal wetland biogeochemistry is dynamic in response to climate change, and yet we do not understand, and thus cannot fully predict, how crucial aspects of these systems will change in the future. Temperatures in the Northern Hemisphere have disproportionately increased 4° Celsius (C) in 30 years causing the rate of deglaciation to increase significantly in global high-latitude river deltas. This will have a prolonged effect on local microbiome metabolism and biodiversity of the subsurface, influencing solid, liquid, and gaseous compounds in the system. Using sediment geochemical analyses, autonomous sampling techniques, and 16S rRNA (Ribosomal ribonucleic acid) gene sequencing, we have identified key processes that occur in the Copper River Delta, AK (Alaska), a model system to study high-latitude watersheds during rapid climate change. We calculated carbon accumulation rates upwards of 520 ± 60 grams (g) C per meter squared per year (m-2 yr-1) in outwash pond sediments nearest to the glaciers, which co-occurred with pronounced suboxic peaks in Iron (Fe) (III) and Manganese (Mn) (II). Sediment microbial communities across the outwash ponds are structured on the basis of total iron and manganese concentrations, proximity to glaciers, and organic matter content. Additionally, we revealed no methane accumulation in the ponds during ice-cover, despite high organic matter content. High-latitude wetland ecosystems are not only influenced by the changing climate, but also have the potential to impact carbon cycling considering high carbon burial rates. These findings show the importance of understanding changing biogeochemical processes in high-latitude wetlands, as they have the potential to influence carbon cycling. |
format |
Dataset |
author |
Jessica Buser Erin Peck Peter Chase Laura Lapham Carmella Vizza Frederick Colwell |
author_facet |
Jessica Buser Erin Peck Peter Chase Laura Lapham Carmella Vizza Frederick Colwell |
author_sort |
Jessica Buser |
title |
Inductively coupled plasma - optical emission spectrometry of pond sediments, Copper River Delta, AK: collected in 2017, measured in 2022 |
title_short |
Inductively coupled plasma - optical emission spectrometry of pond sediments, Copper River Delta, AK: collected in 2017, measured in 2022 |
title_full |
Inductively coupled plasma - optical emission spectrometry of pond sediments, Copper River Delta, AK: collected in 2017, measured in 2022 |
title_fullStr |
Inductively coupled plasma - optical emission spectrometry of pond sediments, Copper River Delta, AK: collected in 2017, measured in 2022 |
title_full_unstemmed |
Inductively coupled plasma - optical emission spectrometry of pond sediments, Copper River Delta, AK: collected in 2017, measured in 2022 |
title_sort |
inductively coupled plasma - optical emission spectrometry of pond sediments, copper river delta, ak: collected in 2017, measured in 2022 |
publisher |
Arctic Data Center |
publishDate |
2022 |
url |
https://doi.org/10.18739/A2804XM3V |
op_coverage |
South central AK Copper River Delta (CRD). The West CRD watershed is approximately 313,600 acres of heterogeneous ecosystems bound by the Eyak River to the West, Chugach mountain range to the North and East, and the Gulf of Alaska to the South (Kesti et al., 2007). The CRD is located on the Prince William Sound Segment of the North American Plate and is subject to massive earthquakes approximately every 600 years as the Pacific plate creates a subduction zone along the Aleutian trench, moving at 55 millimeters (mm) year−1 (Plafker, 1965). In 1964, the CRD and surrounding areas experienced a magnitude 9.2 earthquake, creating areas of uplift between 1 and 4 meters, which caused 1.5 kilometers of CRD intertidal areas to become freshwater wetland that persists today (Thilenius, 1995). The CRD is experiencing a subsidence of 9 mm year−1, creating two distinct freshwater ecosystems composed of outwash ponds and uplift ponds (Tiegs et al., 2013). In addition to active tectonics, glaciers in the watershed contribute over 69% of regional freshwater runoff carrying glacial flour (Neal et al., 2010). The influence of Scott, Sheridan, Sherman, Saddlebag, Miles, Martin, Kushtaka, and Bering glaciers shapes ecosystem establishment along the terraces of the Copper River proper and the delta (Boggs, 2000). In the CRD, outwash plains are the dominant landscape form, and are sustained by summertime melt and subsequent discharge in the form of heavy subsurface and surface flows (Boggs, 2000). The glacial influence also sustains the CRD as monumental sediment loads deposited at the rate of 97 × 106 t year−1 exceeds coastal erosion (Kesti et al., 2007). We have documented the loss of glaciers around the CRD using the U.S. Geological Survey's Earth Resources Observation and Science (EROS) center Landsat Archive images, showing a net retreat from 2013 to 2019. Glacial mass loss and increased regional precipitation will continue to increase Copper River discharge up to 48% by the end of the century (Valentin et al., 2018). ENVELOPE(-145.3205,-145.3205,60.2924,60.2924) BEGINDATE: 2017-01-01T00:00:00Z ENDDATE: 2022-01-01T00:00:00Z |
long_lat |
ENVELOPE(-61.383,-61.383,-70.550,-70.550) ENVELOPE(156.457,156.457,62.260,62.260) ENVELOPE(-145.3205,-145.3205,60.2924,60.2924) |
geographic |
Boggs Eros Gulf of Alaska Pacific |
geographic_facet |
Boggs Eros Gulf of Alaska Pacific |
genre |
eyak glaciers Alaska |
genre_facet |
eyak glaciers Alaska |
op_doi |
https://doi.org/10.18739/A2804XM3V |
_version_ |
1800871681098514432 |
spelling |
dataone:doi:10.18739/A2804XM3V 2024-06-03T18:46:49+00:00 Inductively coupled plasma - optical emission spectrometry of pond sediments, Copper River Delta, AK: collected in 2017, measured in 2022 Jessica Buser Erin Peck Peter Chase Laura Lapham Carmella Vizza Frederick Colwell South central AK Copper River Delta (CRD). The West CRD watershed is approximately 313,600 acres of heterogeneous ecosystems bound by the Eyak River to the West, Chugach mountain range to the North and East, and the Gulf of Alaska to the South (Kesti et al., 2007). The CRD is located on the Prince William Sound Segment of the North American Plate and is subject to massive earthquakes approximately every 600 years as the Pacific plate creates a subduction zone along the Aleutian trench, moving at 55 millimeters (mm) year−1 (Plafker, 1965). In 1964, the CRD and surrounding areas experienced a magnitude 9.2 earthquake, creating areas of uplift between 1 and 4 meters, which caused 1.5 kilometers of CRD intertidal areas to become freshwater wetland that persists today (Thilenius, 1995). The CRD is experiencing a subsidence of 9 mm year−1, creating two distinct freshwater ecosystems composed of outwash ponds and uplift ponds (Tiegs et al., 2013). In addition to active tectonics, glaciers in the watershed contribute over 69% of regional freshwater runoff carrying glacial flour (Neal et al., 2010). The influence of Scott, Sheridan, Sherman, Saddlebag, Miles, Martin, Kushtaka, and Bering glaciers shapes ecosystem establishment along the terraces of the Copper River proper and the delta (Boggs, 2000). In the CRD, outwash plains are the dominant landscape form, and are sustained by summertime melt and subsequent discharge in the form of heavy subsurface and surface flows (Boggs, 2000). The glacial influence also sustains the CRD as monumental sediment loads deposited at the rate of 97 × 106 t year−1 exceeds coastal erosion (Kesti et al., 2007). We have documented the loss of glaciers around the CRD using the U.S. Geological Survey's Earth Resources Observation and Science (EROS) center Landsat Archive images, showing a net retreat from 2013 to 2019. Glacial mass loss and increased regional precipitation will continue to increase Copper River discharge up to 48% by the end of the century (Valentin et al., 2018). ENVELOPE(-145.3205,-145.3205,60.2924,60.2924) BEGINDATE: 2017-01-01T00:00:00Z ENDDATE: 2022-01-01T00:00:00Z 2022-04-18T00:00:00Z https://doi.org/10.18739/A2804XM3V unknown Arctic Data Center ICP-OES Sediment High-latitude Freshwater Dataset 2022 dataone:urn:node:ARCTIC https://doi.org/10.18739/A2804XM3V 2024-06-03T18:18:54Z High-latitude, coastal wetland biogeochemistry is dynamic in response to climate change, and yet we do not understand, and thus cannot fully predict, how crucial aspects of these systems will change in the future. Temperatures in the Northern Hemisphere have disproportionately increased 4° Celsius (C) in 30 years causing the rate of deglaciation to increase significantly in global high-latitude river deltas. This will have a prolonged effect on local microbiome metabolism and biodiversity of the subsurface, influencing solid, liquid, and gaseous compounds in the system. Using sediment geochemical analyses, autonomous sampling techniques, and 16S rRNA (Ribosomal ribonucleic acid) gene sequencing, we have identified key processes that occur in the Copper River Delta, AK (Alaska), a model system to study high-latitude watersheds during rapid climate change. We calculated carbon accumulation rates upwards of 520 ± 60 grams (g) C per meter squared per year (m-2 yr-1) in outwash pond sediments nearest to the glaciers, which co-occurred with pronounced suboxic peaks in Iron (Fe) (III) and Manganese (Mn) (II). Sediment microbial communities across the outwash ponds are structured on the basis of total iron and manganese concentrations, proximity to glaciers, and organic matter content. Additionally, we revealed no methane accumulation in the ponds during ice-cover, despite high organic matter content. High-latitude wetland ecosystems are not only influenced by the changing climate, but also have the potential to impact carbon cycling considering high carbon burial rates. These findings show the importance of understanding changing biogeochemical processes in high-latitude wetlands, as they have the potential to influence carbon cycling. Dataset eyak glaciers Alaska Arctic Data Center (via DataONE) Boggs ENVELOPE(-61.383,-61.383,-70.550,-70.550) Eros ENVELOPE(156.457,156.457,62.260,62.260) Gulf of Alaska Pacific ENVELOPE(-145.3205,-145.3205,60.2924,60.2924) |