cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.27888720
title: <b>Appendices to IAWA 2298</b>

description: <b>Appendix A.</b> Explanation of Appendix B.<b>Appendix B.</b> Dataset of the native woody species of Southern Africa extracted from the Botanical Database of Southern Africa (BODATSA, Le Roux et al. 2017).<b>Appendix C.</b> Block dimensions and weight ante and post combustion of the specimen samples of BRS. W: weight, L: radial length and D: diameter. The sample set labelled BRS18-2-xx_1 (in green) is stored at the ESI and the sample set labelled BRS18-2-xx_2 (in white) at CEPAM.
DOI: 10.18739/a20k26b93
title: Report for methane monitoring in Arctic Lakes in Northwest Territories, Canada, August 2015

description: The investigators propose to measure methane concentrations in frozen lakes 
continuously throughout the Arctic winter using autonomous sampling devices, to more thoroughly address
 the variability in the methane flux from Arctic lakes to the atmosphere. Methane is a potent
 greenhouse gas, the release of which from Arctic sources is poised to increase with climate
 warming. This project will expand upon a successful pilot study that included the initial testing
 of autonomous continuous fluid sampler and sensor systems. The proposed expansion will
 involve additional capabilities and the deployment of a sampling unit in each of six small lakes
 along a north-south gradient in the Mackenzie River delta in the Canadian Arctic for a ninemonth
 period, spanning the winter season. With these data the investigators aim to characterize
 the physical, chemical, and microbial conditions in the water column to elucidate hydrologic,
 microbial, and weathering processes during the winter season, when methane builds in lake
 water under the ice cover. The investigators hypothesize that sudden (week, days, or even hours)
 releases of methane, following spring flooding and ice cover breakup, produce a distinct
 atmospheric flux from Arctic lakes that would otherwise be missed, since most logistically
 reasonable sampling occurs in the summer months when methane concentrations in these lakes
 are low or below detection.
 The majority of methane flux to the Arctic atmosphere is estimated to come from soils and small
 lakes, although these estimates are based on few direct observations with large uncertainties.
 This proposed study, using in situ samplers and sensors, will allow an extensive microbial, gas
 and ion analytical program coupled with a network of physical and chemical sensor data to
 assess temporal conditions during winter months; to confirm fundamental processes and rates; to
 determine the interplay among microbial, geochemical and physical processes; and to develop a
 plan for a more inclusive study that takes advantage of low cost proxies for significant processes
 that best characterize temporal aspects of lake conditions. The project will enhance infrastructure
 for future research in the Arctic through the development of novel in situ sampling. The project
 will support several undergraduate and graduate students, providing valuable lab-based
 experience for students from non-research-intensive institutions. The investigators also will
 conduct two informal outreach activities to communicate the importance of Arctic climate
 change to primary school students while also teaching them about design and engineering. They
 also intend to work closely with Aurora College and Aurora Research Institute based in Inuvik,
 Canada, to engage First Nations youth.
DOI: 10.18739/a2vt1gq4q
title: Report for methane monitoring in Arctic Lakes in Northwest Territories, Canada, August 2017

description: The primary goal of the August 2017 field program was the recovery of nine year-long
OsmoSampler systems from eight lakes in the Mackenzie River delta and North Richards Island
regions of the Northwest Territories of Canada. Secondary goals for the field program included
collection of water and sediment samples from the same lakes, and deployment of new
OsmoSampler systems in three of the same lakes, as well as new sites of interest in the
Tuktoyaktuk region. Even despite poor weather in the outer delta and a cut line to an
OsmoSampler, all sampling systems that were deployed in August 2016 were successfully
recovered, as were sediment and water samples from the same lakes. These recoveries involved
numerous small boat trips to Inuvik area lakes and three helicopter days (supported by
collaborator Lance Lesack's PCSP award). New OsmoSamplers were deployed in three lakes: Lake 520 in the Inuvik area lakes, Swiss Cheese Lake in the outer delta, and North Head 1 lake
at the northern most point of North Richards Island. An additional OsmoSampler was deployed
in a deep hole by Scott Dallimore during operations off Tuktoyaktuk. During the field program,
the team was joined by freelance journalist Laura Poppick to develop articles related to our
Arctic research.
DOI: 10.18739/a2r20rx1c
title: Making Science Accessible to Inuit, Inughuit, and Iñupiat Arctic Indigenous Communities in Their Own Languages; Qaanaaq, Greenland; Barrow, Alaska; Clyde River, Nunavut, Canada; 2013-2017

description: The Meaning of Ice celebrates Arctic sea ice as it is seen and experienced by the Inuit, Iñupiat, and Inughuit, who for generations have lived with it and thrived on what it offers. With extensive details offered through their own drawings and writings, this book describes the great depth of Inuit, Iñupiat, and Inughuit knowledge of sea ice and the critical and complex role it plays in their relationships with their environment and with one another. Over forty Inuit, Iñupiat, and Inughuit from three different Arctic communities contributed stories, original artwork, hand-drawn illustrations, maps, family photos, and even recipes to this book. Professional and historical photographs, children's artwork, and innovative graphics add more to the story of The Meaning of Ice.

The Meaning of Ice is an important contribution to understanding the Arctic and its people at a time when the region is undergoing profound change, not least in terms of sea ice. It takes readers beyond what sea ice is, to broaden our appreciation of what sea ice means.
DOI: 10.18739/a2mc8rg99
title: Ground Penetrating Radar (GPR) and Global Positioning System (GPS) data from 2011 traverse from Thule to Summit, Greenland

description: This dataset includes Ground Penetrating Radar (GPR) and GPS position data from the 2011 traverse from Thule to Summit, Greenland, as reported in Hawley et al. 2014. We have concatenated the GPR data from the raw files, and collocated the GPS measurements, to generate a series of GPR and GPS measurements with high location accuracy. The GPR data clearly show isochronous layers in the upper 30 meters of the firn, and were used in the above-mentioned paper to generate accumulation estimates.
DOI: 10.18739/a2gm81p61
title: Soil Temperature NIMS grid Atqasuk, Alaska 2015

description: Soil Temperature measurements were taken at each Networked Info-mechanical Systems (NIMS) grid plot. The System Ecology Lab (SEL) Taylor Temperature Probe was used to take measurements between the matted trail and each white board at every meter at about a 10 cm depth throughout the 2015 summer in Atqasuk , Alaska.
DOI: 10.18739/a2bv79w2w
title: Spectral Reflectance Measurements NIMS grid Atqasuk, Alaska 2012

description: Spectral measurements were taken at each meter of the Networked info-mechanical system (NIMS) grid in Atqasuk, Alaska during the summer of 2012. The NIMS grid is situated about 50 meters to the south of the International Tundra Experiment (ITEX) dry sites. Measurements were taken from the edge of each white board located at each meter aimed at the plots. The instrumentation used was a Unispec dual channel (DC) spectrometer with fiber optics as sensors. A manfrotto tri-pod with an arm attachment was used to hold the fibers and sensors in place while taking the spectral measurements. The arm had 2 bubble levels to assist in keeping the sensors as level as possible. The calculated foot print cover is about 50-60 cm using a tri-pod height of 1.62 meters. The sensor angle for each scan is 20 degrees. Extra reference scans were taken on a 100 percent reflective white board surface.
DOI: 10.18739/a2736m28v
title: Soil Temperature NIMS grid Imnavait, Alaska 2012

description: Soil Temperature measurements were taken at each Networked Info-mechanical Systems (NIMS) grid plot. The SEL lab's Taylor Temperature Probe was used to take measurements between the matted trail and each white board at every meter at about a 10 cm depth once on July 25th in the summer of 2012 in Imnavait, Alaska.
DOI: 10.18739/a23b5w837
title: Snow Depth ARCSS grid Barrow, Alaska 2010

description: Snow Depth at each Arctic System Science (ARCSS) grid point was taken on May 26, 2010 in Barrow, Alaska. Each measurement was taken 1 meter to the south of each grid point. 3 measurements were taken at each grid marker and are labeled #1, #2, and #3. The long depth probe from the Systems Ecology Lab (SEL) at the University of Texas El Paso was used (orange tape on the handle). Data have been corrected by subtracting 3cm from measurements made in the field to account for the missing tip of the probe. ARCSS grid coordinates are labelled A thru K and 1 thru 11 for each N-S and E-W row of markers respectively. A11 is in the northwest corner of the grid and K11 is in the southeast corner of the grid.
DOI: 10.18739/a2zk55m93
title: Soil Moisture NIMS grid Atqasuk, Alaska 2013

description: Soil Moisture measurements were taken at each Networked Info-mechanical Systems (NIMS) grid plot. Used the SEL labels older purple TDR 300 soil moisture probe for the measurements which were taken between the matted trail and each white board at every meter throughout the 2013 summer in Atqasuk, Alaska.
DOI: 10.18739/a2tt4ft6f
title: Soil Moisture NIMS grid Barrow, Alaska 2014

description: Soil Moisture measurements were taken at each Networked Info-mechanical Systems (NIMS) grid plot. Used the System Ecology Lab (SEL) at the University of Texas El Paso labels purple TDR 300 soil moisture probe for the measurements which were taken between the matted trail and each white board at every meter throughout the 2014 summer in Barrow, Alaska.
DOI: 10.18739/a2q52fd3c
title: Water Table Depth (WTD) NIMS grid Barrow, Alaska 2011

description: Water table depth (WTD) measurements were taken along the NIMS grid in Barrow, Alaska during the summer of 2011. The Networked Info-mechanical System (NIMS) grid is situated about 200 meters to the north east side of the International Tundra Experiment (ITEX) dry sites. If a uniform representation of the water table within each plot was visible, then a WTD tube was placed there to measure the change in water table throughout the season. For instance if the plot was half saturated and half dry, then that plot was skipped and no tube was placed there. The exact location of WTD tubes are as follows: Between meters 0-1, 2-3, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 18-19, 20-21, 24-25, 26-27, 28-29, 30-31, 32-33, 34-35, 36-37, 38-39, 42-43, 44-45, 47-48, and 49-50. A total of 22 WTD tubes were installed into the NIMS grid in Barrow. Measurements were made every few days during the summer snow free period between mid June and mid August. WTD was calculated as the difference between the depth (cm) of the water table above or below the measuring tube (- Values = water above tube, + Values= water level below the height of the tube) and the height of the top of the measuring tube above the ground level. Measurements were not made (NA in data sheet) if there was persistent snow cover, interference or disturbance from other experimental infrastructure, or if water table depth tubes were dry to the upper surface of the permafrost.
DOI: 10.18739/a2kd1qm0q
title: Active Layer ARCSS grid Atqasuk, Alaska 2013

description: Active Layer measurements were taken on a 30 plot subset within the Arctic System Science (ARCSS) Grid in Atqasuk, Alaska during the 2013 summer field season. Each measurement was taken on the northeastern-most corner of each plot. The chosen subset was located from E2-E6 and J2-J6.
DOI: 10.18739/a2fn10s6b
title: Soil Temperature ARCSS grid Atqasuk, Alaska 2015

description: Soil temperature measurements were taken on a 30 plot subset within the Arctic System Science (ARCSS) grid in Atqasuk, Alaska. Each measurement was taken on the north eastern most corner of each plot. The chosen subset was located from E2-E6 and J2-J6. The System Ecology Lab (SEL) at the University of Texas El Paso Taylor Temperature Probe was used to take measurements at about a 10 cm depth at each plot.
DOI: 10.15468/dl.nkxu2m
title: Occurrence Download

description: A dataset containing 2 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "TaxonKey is one of (Nannoglottis hieraciphylla (Hand.-Mazz.) Y.Ling & Y.L.Chen)"
 ]
}

 The dataset includes 2 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027739-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a29w0902m
title: Soil Moisture NIMS grid Imnavait, Alaska 2012

description: Soil Moisture measurements were taken at each Networked Info-mechanical Systems (NIMS) grid plot. We used the System Ecology Laboratory (SEL) purple TDR 300 soil moisture probe for the measurements which were taken between the matted trail and each white board at every meter once on July 25th in summer 2012 at Imnavait, Alaska
DOI: 10.18739/a2639k574
title: Albedo Line Snow Depths

description: Snow depth measurements recorded every half meter along the transects used for albedo measurements using a GPS magnaprobe. Included in the file are latitude, longitude, and snow depth. The first set of columns are at the south site, the second set are at the north site. Note that the south site was surveyed first along the line every half meter, and then a large dune field north of the line was extensively surveyed. Data Citation: Eicken, H., R. Gradinger, T. Heinrichs, M. Johnson, A. Lovecraft, and M. Sturm. (Nov. 29, 2009, Updated May 9, 2012). Albedo Line Snow Depths (SIZONET). UCAR/NCAR - CISL - ACADIS. http://dx.doi.org/10.5065/D6057CV2
DOI: 10.18739/a22b8vc4g
title: Doctoral Dissertation Improvement Grant: The Archaeological Investigation of Erosion and its Effect on Social Processes in the Arctic

description: This award supports a Doctoral Dissertation Improvement project to investigate the relationship between erosion and economic inequality over the environmentally and socially dynamic first 500 years of Norse settlement in Hegranes, Skagafjörður, Iceland. The agricultural practices of the first settlers of Iceland, ca. 870 CE, caused widespread deforestation and soil erosion. Erosion moves sediments from one place to another, and can lead to either landscape degradation or augmentation. On Hegranes small abandoned farms lie near large successful farms that still operate today, and eroded areas are interspersed with productive grassland. This patchwork landscape allows investigation of erosion as related to farmstead abandonment and the development of social inequality. This research has implication for understanding how coupled human and environmental systems today might affect processes of social change.
 The researcher will use tephrochronology to compare the settlement sequence of small farms with associated environmental sequences of soil erosion and landscape change. The goal is to explore changes in number and distribution of small household farms, document processes of erosion, and investigate whether social reorganization of the landscape corresponds to increases in erosion. Larger, more powerful households likely benefited from abandonment of small farms, and this project will suggest how abandonment was managed to their advantage. This work will contribute to discussions about social and political consequences of human-initiated environmental change, focusing on unequal power relations between households that facilitate environmental degradation and social inequality.
DOI: 10.18739/a2xk84r0z
title: Fornbyli Landscape and Archaeological Survey on Hegranes (FLASH) Interim Report 2016, Iceland

description: In 2016, the Fornbyli Landscape and Archaeological Survey on Hegranes (FLASH) project and the Skagafjordur Church and Settlement Survey (SCASS) continued survey and excavation in and around known outlying ruins and archaeological places (fornbyli) on the farms of As (Naefursstadur), Keflavik (including Kriki and Thraelagerdi), Egg (Minni-Egg), Helluland (Haagerdi and Kotid), and Hamar (Hendilkot) on Hegranes in Skagafjordur, North Iceland. The work was performed to meet the goals of Kathryn Catlin's doctoral dissertation research towards her PhD at Northwestern University as part of the Skagafjordur Church and Settlement Survey (SCASS). Additional coring by SCASS in 2016 at the outlying fields of Gardur (Hegranesthing), Keta, Rip, Utanverdunes, Keflavik, Egg (including Rein), Helluland (including Asgrimsstadir), and Hamar are described in separate reports, along with specific details and analysis of the farmsteads at these major sites.

The FLASH research had two primary purposes: first, to locate, date, and to the extent possible, characterize the nature of the activities performed at the fornbyli locations; and second, to describe and understand the sequences of soil erosion, sediment deposition, and landscape change that have occurred on Hegranes, both near and distant from the fornbyli sites and the major farms, since the settlement of Iceland ca. 870 AD. Coring was employed by FLASH and SCASS to (1) determine the establishment date and extent of the medieval settlements and farmsteads; (2) locate areas of human activity and measure soil depth in the fields immediately surrounding the medieval settlements; and (3) determine the dates, use, and environmental context of fornbyli sites.

Preliminary interpretations of the work suggest that many fornbyli were inhabited early, that the sites were reused after habitation ceased for multiple purposes through the medieval period and later, and that the overall landscape of Hegranes has been subject to significant erosion and alteration over the course of its history. Most of the fornbyli were inhabited prior to ca. 950 AD, and several of them were relatively large during the 10th and 11th centuries, comparable in size to farms that would later become much larger and more successful. Others seem only to have been inhabited for a short time, perhaps as a temporary or seasonal work site. None show evidence of habitation much after ca. 1104, and from that time until after the late 18th century, many of the sites were rebuilt as farm infrastructure for livestock management, only to be finally abandoned and fall to ruin before the 20th century. Preliminary environmental analysis suggests two significant periods of erosion: prior to 1104, and after 1766, roughly corresponding to the periods when the use of the sites was changing. The relationship between mire development and site use will be further investigated in 2017, along with the character and timing of habitation at the remaining sites.
DOI: 10.18739/a2sx6497z
title: Fornbyli Landscape and Archaeological Survey on Hegranes (FLASH) Interim Report 2015, Iceland

description: In 2015, the Fornbyli Landscape and Archaeological Survey on Hegranes (FLASH) project and the Skagafjordur Church and Settlement Survey (SCASS) conducted survey and excavation in and around known outlying ruins, archaeological places (fornbyli), and extensive fields at the farms of As, Keflavik, Egg, Hroarsdalur, Gardur, Helluland, and Keldudalur on Hegranes in Skagafjordur, North Iceland. The work was performed to meet the goals of the Skagafjordur Church and Settlement Survey (SCASS) and for Kathryn Catlin's doctoral dissertation research towards her PhD at Northwestern University.

The FLASH research had two primary purposes: first, to locate, date, and to the extent possible, characterize the nature of the activities performed at the fornbyli locations; and second, to describe and understand the sequences of soil erosion and sediment deposition that have occurred on Hegranes, both near and distant from the fornbyli and the major farms, since the settlement of Iceland ca. 870 AD.

Coring was performed at all seven farms with multiple objectives for both projects. At Keflavik, As, and Keldudalur, coring was employed to (1) determine the establishment date and extent of the medieval farm mounds near the farmstead center; (2) locate areas of human activity and measure soil depth in the fields immediately surrounding the medieval farm mounds; and (3) determine the dates, use, and environmental context of fornbyli at the margins of the modern farms. At Gardur and Hroarsdalur, coring concentrated on (1) the farm mounds and (2) the extensive nearby fields. At Egg and Helluland, coring was only undertaken at (3) two of the fornbyli. This document reports on (2) extensive field coring and (3) coring at the fornbyli. (1) Coring and excavations in the farm mounds fell under the purview of the main SCASS project and are reported elsewhere. Test pits at Minni-As and Tunfotur (on As) targeted the oldest locations of ash middens as determined from coring survey, and additional profiles at Minni-As and Thraelagerdi (on Keflavik) were placed to characterize erosion at a distance from human habitation. Limited finds (primarily faunals) were retrieved. Macrobotanical flotation samples were obtained from all pre-1300 contexts, along with radiocarbon samples when feasible.

Preliminary interpretations of the work suggest that many fornbyli were constructed early and reused for multiple purposes through the medieval period and later, and that the overall landscape of Hegranes has been subject to significant erosion and landscape change over the course of its history. In particular, the timing of transitions from well-drained to boggy soils in low-lying areas will be investigated in 2016 and 2017.