Identification

Title

History of the Arctic Flora in North America

Alternative title(s)

106.438

Abstract

This dataset in an attempt to increase understanding of how climate cycles of the Quaternary (the last 2.6 million years) impacted divergence in Arctic and alpine tundra flora. Specimens were collected in Beringia and the mountains of western North America, focusing on populations existing within (western and eastern Beringia, and the Pacific Northwest and Rocky Mountains, respectively), as well as sites between those refugia. Briefly, DNA was sequenced from chloroplast and nuclear loci for multiple species of tundra plants that inhabited the entire study region. Target species (Campanula species, Kobresia myosuroides, Lloydia serotina, Pinguicula vulgaris, Poa alpina, Rhodiola species, and Saxifraga species) were phylogenetically diverse and displayed a range of dispersal abilities, making them excellent candidates for evaluating general history of the tundra. Those genetic data make up this Arctic Flora dataset. From the genetic sequence data, gene trees are being reconstructed and used to estimate the patterns and timing of divergence, test which geologic and climatic events most impacted divergence, and infer how the process of genetic divergence differed between Arctic and alpine tundra refugia. The data is archived in nexus files - the standard format for aligned sequence data ready to be used in a phylogenetic analysis. The files are separated by taxon and genetic locus within a given taxon. The nexus format provides details on the data type (DNA), number of samples, and length of sequence. Within a file, all the sequences are aligned but not interleaved, such that the 'sample name' is followed by the entire sequence for that sample. All the specimens that were collected are archived and publicly accessible in the Western Washington University Herbarium.

Resource type

dataset

Resource locator

https://data.eol.ucar.edu//dataset/106.438

protocol: https

name: History of the Arctic Flora in North America homepage

description: Dataset homepage

Unique resource identifier

code

106.438

codeSpace

Dataset language

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

biota

Keywords

Keyword set

keyword value

dataset

originating controlled vocabulary

title

Resource Type

reference date

date type

revision

effective date

2014-10-16

Keyword set

keyword value

Field Surveys

Keyword set

keyword value

Arctic

Vegetation

Biology

Keyword set

keyword value

EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA > ALPINE TUNDRA

EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA > ARCTIC TUNDRA

EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION SPECIES

originating controlled vocabulary

title

Global Change Master Directory (GCMD)

reference date

date type

revision

effective date

2018-02-27

Geographic location

West bounding longitude

-179.00000

East bounding longitude

-100.00000

North bounding latitude

75.00000

South bounding latitude

35.00000

Temporal reference

Temporal extent

Begin position

2007-01-01T00:00:00Z

End position

2012-12-31T23:59:59Z

Dataset reference date

date type

publication

effective date

2013-03-01T16:07:37Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

none

Limitations on public access

none

Responsible organisations

Responsible party

contact position

EOL Data Support

organisation name

UCAR/NCAR - Earth Observing Laboratory

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

https://data.eol.ucar.edu/

name: homepage

responsible party role

pointOfContact

Responsible party

organisation name

Western Washington University

full postal address

516 High St. Biology, Rm. 237

Bellingham

98225

USA

telephone number

360-650-6575

email address

eric.dechaine@wwu.edu

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

contact position

EOL Data Support

organisation name

UCAR/NCAR - Earth Observing Laboratory

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

https://data.eol.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata date

2024-02-07T22:41:57Z

Metadata language

eng; USA