cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17632/g6vrmj8rjr
title: The silicon isotope composition of Archaean continental crust from ~3.8 Ga West Greenland rocks

description: Included are locality, XRF, age, and Si isotope data for Eoarchaean orthogneisses, metabasalts, and metasediments from southern West Greenland. Samples were originally collected by Stephen Moorbath and given to Paul Savage at Oxford.

This dataset is in association with a project conducted by me (Madeleine Murphy) at the University of St Andrews from October 2018 to August 2019 towards fulfillment of the requirements for the degree of MSc Geochemistry under the supervision of Dr. Paul Savage. 08/08/2019

For additonal information about the MSc dissertation, please contact me at memurphy1896@gmail.com.

Highlights: 
Updated Si isotope analysis provides characterization of ancient continental crust 
δ30Si of Archaean samples show systematic deviations from modern igneous rocks 
Data suggest Archaean TTGs formed via horizontal tectonics and were heavily weathered 

Abstract:
Studies of the ancient continental crust may illuminate Earth’s differentiation, tectonic regimes through time, and co-evolution of the atmosphere and continents. Though scarce, representative samples include the Archaean tonalite-trondhjemite-granodiorites (TTGs) and metamorphosed lithologies of southern West Greenland. Due to its potential to trace various geologic processes, Si isotope analysis of these rocks could illuminate the mechanisms behind TTG formation, the inputs that contaminated igneous melts, and the extent of ancient continental weathering. Here, we measured the Si isotope composition of ~3.8 Ga TTGs, metabasalts, felsic volcanics, and metasediments from the Itsaq Gneiss Complex, SW Greenland. A large range in Si isotopes was formerly reported for Archaean Greenland rocks to suggest hydrothermal involvement during the earliest crustal genesis. However, Si isotope analytical techniques have improved in the years since these findings, providing the opportunity to re-characterize the δ30Si of Archaean continental crust using an updated alkali fusion and MC-ICP-MS methodology. 

For Archaean TTGs, we report an average δ30Si =－0.13 ± 0.03‰, isotopically heavier than Phanerozoic analogues, which may have resulted from the introduction of a seawater-derived contaminant to the TTG source melt. The fact that Archaean TTG Si signatures are not vastly different than Phanerozoic igneous rocks suggests they could have formed via magmatic differentiation in an arc setting. Our data for metabasalts and felsic volcanics closely parallel the Si signatures for modern analogues, pointing to their genesis in a subduction environment. For metasediments, we report δ30Si values from －0.19‰ to －1.2‰, much lighter than the range for heavily altered modern pelitic sediments, which implies their origin involved significant chemical weathering of a TTG protolith to form clay minerals. Combined, these interpretations suggest the formation of continental crust in the &gt;3.8 Ga Archaean eon may have involved subduction and, crucially, the influence of an early hydrosphere.
DOI: 10.17632/g6vrmj8rjr.1
title: The silicon isotope composition of Archaean continental crust from ~3.8 Ga West Greenland rocks

description: Included are locality, XRF, age, and Si isotope data for Eoarchaean orthogneisses, metabasalts, and metasediments from southern West Greenland. Samples were originally collected by Stephen Moorbath and given to Paul Savage at Oxford.

This dataset is in association with a project conducted by me (Madeleine Murphy) at the University of St Andrews from October 2018 to August 2019 towards fulfillment of the requirements for the degree of MSc Geochemistry under the supervision of Dr. Paul Savage. 08/08/2019

For additonal information about the MSc dissertation, please contact me at memurphy1896@gmail.com.

Highlights: 
Updated Si isotope analysis provides characterization of ancient continental crust 
δ30Si of Archaean samples show systematic deviations from modern igneous rocks 
Data suggest Archaean TTGs formed via horizontal tectonics and were heavily weathered 

Abstract:
Studies of the ancient continental crust may illuminate Earth’s differentiation, tectonic regimes through time, and co-evolution of the atmosphere and continents. Though scarce, representative samples include the Archaean tonalite-trondhjemite-granodiorites (TTGs) and metamorphosed lithologies of southern West Greenland. Due to its potential to trace various geologic processes, Si isotope analysis of these rocks could illuminate the mechanisms behind TTG formation, the inputs that contaminated igneous melts, and the extent of ancient continental weathering. Here, we measured the Si isotope composition of ~3.8 Ga TTGs, metabasalts, felsic volcanics, and metasediments from the Itsaq Gneiss Complex, SW Greenland. A large range in Si isotopes was formerly reported for Archaean Greenland rocks to suggest hydrothermal involvement during the earliest crustal genesis. However, Si isotope analytical techniques have improved in the years since these findings, providing the opportunity to re-characterize the δ30Si of Archaean continental crust using an updated alkali fusion and MC-ICP-MS methodology. 

For Archaean TTGs, we report an average δ30Si =－0.13 ± 0.03‰, isotopically heavier than Phanerozoic analogues, which may have resulted from the introduction of a seawater-derived contaminant to the TTG source melt. The fact that Archaean TTG Si signatures are not vastly different than Phanerozoic igneous rocks suggests they could have formed via magmatic differentiation in an arc setting. Our data for metabasalts and felsic volcanics closely parallel the Si signatures for modern analogues, pointing to their genesis in a subduction environment. For metasediments, we report δ30Si values from －0.19‰ to －1.2‰, much lighter than the range for heavily altered modern pelitic sediments, which implies their origin involved significant chemical weathering of a TTG protolith to form clay minerals. Combined, these interpretations suggest the formation of continental crust in the &gt;3.8 Ga Archaean eon may have involved subduction and, crucially, the influence of an early hydrosphere.
DOI: 10.17632/rtw4r3xgh7
title: High throughput mutational characterization of the GPCR ligand C5a using yeast display and deep sequencing

description: High-throughput mutagenesis platforms are powerful tools to systematically characterize protein functions, and play a crutial role in therapeutic developments. As the largest class of membrane receptors and drug targets, G protein-coupled receptors (GPCRs) have been the focus of these studies. While significant progress has been made in characterizing the receptors, mutagenesis studies on their ligands have lagged behind, because of the challenges in solubilizing the target receptor. In the publication titled "High throughput mutational characterization of the GPCR ligand C5a using yeast display and deep sequencing", we present a novel approach that utilizes lipid vesicles to embed and stabilize target membrane receptors, allowing direct ligand screening. Using this platform, we investigate the anaphylatoxin Complement 5a (C5a) and characterized the mutational impacts on its interactions with the two native GPCRs: complement 5a receptor 1 (C5aR1) and complement 5a receptor 2 (C5L2). The screening provided new insights into the molecular basis of the interaction with the two receptors, and led to the discovery of novel ligands that selectively activate C5L2, but not C5aR1. This highlights the potential of our method to advance our understanding of GPCR ligands and paves the way for designing novel ligands with therapeutically values for this important class of receptors.

The dataset includes the sequencing data and the relevant python code to reproduce the results presented in the manuscript. The sequencing data includes the raw FASTQ files and processed FASTA files obtained from the mutagenesis analysis of C5a binding to its receptors, C5aR1 and C5L2. The FASTQ files are stored under folder "FASTAQ_SSM-C5a_MutagenesisSorting", and the FASTA files are stored under "fasta_files".
DOI: 10.17632/rtw4r3xgh7.1
title: High throughput mutational characterization of the GPCR ligand C5a using yeast display and deep sequencing

description: High-throughput mutagenesis platforms are powerful tools to systematically characterize protein functions, and play a crutial role in therapeutic developments. As the largest class of membrane receptors and drug targets, G protein-coupled receptors (GPCRs) have been the focus of these studies. While significant progress has been made in characterizing the receptors, mutagenesis studies on their ligands have lagged behind, because of the challenges in solubilizing the target receptor. In the publication titled "High throughput mutational characterization of the GPCR ligand C5a using yeast display and deep sequencing", we present a novel approach that utilizes lipid vesicles to embed and stabilize target membrane receptors, allowing direct ligand screening. Using this platform, we investigate the anaphylatoxin Complement 5a (C5a) and characterized the mutational impacts on its interactions with the two native GPCRs: complement 5a receptor 1 (C5aR1) and complement 5a receptor 2 (C5L2). The screening provided new insights into the molecular basis of the interaction with the two receptors, and led to the discovery of novel ligands that selectively activate C5L2, but not C5aR1. This highlights the potential of our method to advance our understanding of GPCR ligands and paves the way for designing novel ligands with therapeutically values for this important class of receptors.

The dataset includes the sequencing data and the relevant python code to reproduce the results presented in the manuscript. The sequencing data includes the raw FASTQ files and processed FASTA files obtained from the mutagenesis analysis of C5a binding to its receptors, C5aR1 and C5L2. The FASTQ files are stored under folder "FASTAQ_SSM-C5a_MutagenesisSorting", and the FASTA files are stored under "fasta_files".
DOI: 10.5281/zenodo.14867431
title: Data from: Ecological niche models based on occurrence records of the amphibian chytrid fungus overestimate lethal chytridiomycosis risk
DOI: 10.34740/kaggle/dsv/14852537
title: SEC EDGAR Filings Index
DOI: 10.5281/zenodo.3967316
title: Aviation wastewater qPCR dataset (US-UK research collaboration)

description: Dataset of qPCR-derived concentrations for seven pathogens detected in aircraft wastewater as part of a joint US-UK research collaboration.

Includes the GNU Octave (version 9.2.0) used to produce heatmap visualisations of the time-series for each pathogen for US- and UK-origin flights.
DOI: 10.15468/dl.zk7csh
title: Occurrence Download

description: A dataset containing 81020 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "TaxonKey is Boloria dia"
 ]
}

 The dataset includes 81020 records from 1390 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021105-260208012135463/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.2yyaah
title: Occurrence Download

description: A dataset containing 27501 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Apis mellifera",
 "Country is Australia",
 "HasCoordinate is true"
 ]
}

 The dataset includes 27501 records from 35 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0004184-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.6u8bq5
title: Occurrence Download

description: A dataset containing 10 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Rhoadsia eigenmanni"
 ]
}

 The dataset includes 10 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0004185-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5281/zenodo.15870717
title: Dataset for study on foveal avascular zone morphology, ganglion cell thickness, and high density perimetry in glaucoma

description: This dataset contains data from a cross-sectional study evaluating foveal avascular zone (FAZ) morphology, macular vascular density (mVD), ganglion cell layer thickness (GCLT), and high density perimetry in glaucoma patients. 

Each row corresponds to one eye, including variables such as age, gender, eye number, axial length, structural metrics (FAZ area, perimeter, circularity; GCLT values), functional measurements from high-density perimetry visual field and standard automated perimetry (mean defect in dB and linear scale, perimetry program used, and classification system such as Brusini). 

All data were used in multivariate analyses exploring relationships between vascular, structural, and functional parameters at the macula. This dataset supports the findings submitted to PLOS ONE.
DOI: 10.15468/dl.6vtudc
title: Occurrence Download

description: A dataset containing 90 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Arabis cypria"
 ]
}

 The dataset includes 90 records from 15 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0004186-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.34740/kaggle/dsv/12451464
title: Peer-to-Peer Boliviano (BOB) Exchange Data
DOI: 10.15468/dl.uef4wj
title: Occurrence Download

description: A dataset containing 2 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Cheirodon eigenmanni"
 ]
}

 The dataset includes 2 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0004189-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.6084/m9.figshare.29553026.v1
title: Long-term decline in montane insects under warming summers. Sockman KW. Data and Statistical Analysis Code.

description: Widespread declines in the abundance of insects portend ill-fated futures for their host ecosystems, all of which require their services to function. For many such reports, human activities have directly altered the land or water of these ecosystems, raising questions about how insects in less impacted environments are faring. I quantified the abundance of flying insects during 15 seasons spanning 2004-2024 on a relatively unscathed, subalpine meadow in Colorado, where weather data have been recorded for 38 years. I discovered that insect abundance declined an average of 6.6% annually, yielding a 72.4% decline over this 20-year period. According to model selection following information theoretic analysis of 59 combinations of weather-related factors, a seasonal increase in insect abundance changed to a seasonal decline as the previous summer’s temperatures increased. This resulted in a long-term decline associated with increasing summer temperatures, particularly daily lows, which have increased 0.8°C per year. However, other factors, such as ecological succession and atmospheric elevation in nitrogen and carbon, are also plausible drivers. In a relatively pristine ecosystem, insects are declining precipitously, auguring poorly for this and other such ecosystems that depend on insects in food webs and for pollination, pest control, and nutrient cycling.
DOI: 10.6084/m9.figshare.29553026
title: Long-term decline in montane insects under warming summers. Sockman KW. Data and Statistical Analysis Code.

description: Widespread declines in the abundance of insects portend ill-fated futures for their host ecosystems, all of which require their services to function. For many such reports, human activities have directly altered the land or water of these ecosystems, raising questions about how insects in less impacted environments are faring. I quantified the abundance of flying insects during 15 seasons spanning 2004-2024 on a relatively unscathed, subalpine meadow in Colorado, where weather data have been recorded for 38 years. I discovered that insect abundance declined an average of 6.6% annually, yielding a 72.4% decline over this 20-year period. According to model selection following information theoretic analysis of 59 combinations of weather-related factors, a seasonal increase in insect abundance changed to a seasonal decline as the previous summer’s temperatures increased. This resulted in a long-term decline associated with increasing summer temperatures, particularly daily lows, which have increased 0.8°C per year. However, other factors, such as ecological succession and atmospheric elevation in nitrogen and carbon, are also plausible drivers. In a relatively pristine ecosystem, insects are declining precipitously, auguring poorly for this and other such ecosystems that depend on insects in food webs and for pollination, pest control, and nutrient cycling.
DOI: 10.15468/dl.bq7gbu
title: Occurrence Download

description: A dataset containing 797 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Bombus terrestris",
 "Country is Australia",
 "HasCoordinate is true"
 ]
}

 The dataset includes 797 records from 11 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0004190-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.yskgmz
title: Occurrence Download

description: A dataset containing 12363065 species occurrences available in GBIF matching the query:
{
 "Country" : [
 "is Ecuador"
 ]
}

 The dataset includes 12363065 records from 2122 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0004159-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.zxz4t4
title: Occurrence Download

description: A dataset containing 11079571 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hemiptera"
 ]
}

 The dataset includes 11079571 records from 6189 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0014336-250515123054153/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.sbmgsg
title: Occurrence Download

description: A dataset containing 137679 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is NHMO Bird collection"
 ]
}

 The dataset includes 137679 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0244352-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.zc95et
title: Occurrence Download

description: A dataset containing 665 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is one of (Human Observation, Specimen)",
 "Country is South Africa",
 "DatasetKey is one of (iNaturalist Research-grade Observations, Millenium Seedbank (MSB))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "TaxonKey is Moraea tripetala (L.f.) Ker Gawl."
 ]
}

 The dataset includes 665 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0255273-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.cu8w5j
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Casuariiformes",
 "HasCoordinate is true",
 "Country is Japan",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0257562-220831081235567/datasets/export for details.
DOI: 10.15468/dl.vsnbdt
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Pacrillum manchuricum Orchymont, 1941",
 "HasCoordinate is true",
 "Country is Japan",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0209008-220831081235567/datasets/export for details.
DOI: 10.15468/dl.e82mvk
title: Occurrence Download

description: A dataset containing 80 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Euonymus alatus Elmer"
 ]
}

 The dataset includes 80 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0248710-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ypgg28
title: Occurrence Download

description: A dataset containing 40171 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Human Observation",
 "Geometry POLYGON((-17.16024 35.086,54.04475 35.086,54.04475 66.61717,-17.16024 66.61717,-17.16024 35.086))",
 "TaxonKey is Acorus calamus L."
 ]
}

 The dataset includes 40171 records from 212 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0286004-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.7ywamy
title: Occurrence Download

description: A dataset containing 159 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((0.66574 41.19433,3.01310 41.19433,3.01310 42.14625,0.66574 42.14625,0.66574 41.19433))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Plantae",
 "Year 2023-2023"
 ]
}

 The dataset includes 159 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0255275-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.y2aaus
title: Occurrence Download

description: A dataset containing 22799 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Mauritius",
 "TaxonKey is Aves"
 ]
}

 The dataset includes 22799 records from 64 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0273987-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.wrr645
title: Occurrence Download

description: A dataset containing 51 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Trachys variolaris Saunders, 1873",
 "HasCoordinate is true",
 "Country is Japan",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 51 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0209009-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.