Marie-Victorin Herbarium (MT)

Occurrence dataset published by Université de Montréal Biodiversity Centre

  • 151,010

    Occurrences
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Summary

Full Title

Marie-Victorin Herbarium (MT)

Description

The Marie-Victorin Herbarium (MT) is the second largest university herbarium in Quebec, and ranks fourth among all Canadian herbaria. It includes about 680,000+ vascular plants and 50,000+ bryophytes. Half of the material is Canadian, but representation is global. Recently, the WAT herbarium was acquired and is now incorporated within MT, though specimens are still to be cited with the WAT acronym. The MT and WAT datasets are individually shown in the dataset, though they all belong to MT. The current dataset includes the 150,000+ digitized specimens from the collection.

Temporal coverages

Formation period: 1920-present

Language of Data

 

Administrative contact
Luc Brouillet
Curator
Université de Montréal Biodiversity Centre 4101 rue Sherbrooke est H1X2B2 Montreal Quebec Canada
Metadata author
David Shorthouse
Biodiversity Informatics Manager
Université de Montréal Biodiversity Centre 4101 rue Sherbrooke est H1X2B2 Montreal Quebec Canada
Originator
Luc Brouillet
Curator
Université de Montréal Biodiversity Centre 4101 rue Sherbrooke est H1X2B2 Montreal Quebec Canada 514-343-2142

Published by

Université de Montréal Biodiversity Centre

Publication Date

Oct 14, 2014

Registration Date

Dec 13, 2011

Served by

Canadensys repository

Networks

Links

Alternative Identifiers

External Data

Metadata Documents

Taxonomic Coverage

This dataset includes all digitized vascular plants and bryophytes in the collection. The top 3 families are Cyperaceae (15%), Asteraceae (9%) and Poaceae (5%). For more detailed information about the whole collection, see our inventory at http://dataset.canadensys.net/mt-inventory.

KINGDOM
Plantae (Plants)
CLASS
Equisetopsida (Vascular plants)
FAMILY
Cyperaceae, Asteraceae, Poaceae

39,597 Georeferenced data

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Description

Global terrestrial coverage (except Antartica). Over 88% of the specimens in this dataset are collected in Canada, of which 70% in the province Quebec and … more

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Geographic Coverage

Global terrestrial coverage (except Antartica). Over 88% of the specimens in this dataset are collected in Canada, of which 70% in the province Quebec and 19.5% in Newfoundland. 5% of the specimens are from the United States and 3.5% from Cuba. For more detailed information about the whole collection, see our inventory at http://dataset.canadensys.net/mt-inventory.

Project

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Associated parties

Programmer
Christian Gendreau
Programmer
University of Montreal Biodiversity Centre 4101 rue Sherbrooke est H1X2B2 Montreal Quebec Canada
Programmer
David Shorthouse
Biodiversity Informatics Manager
Université de Montréal Biodiversity Centre 4101 rue Sherbrooke est H1X2B2 Montreal Quebec Canada
Content provider
Lucie Fortin
Université de Montréal Biodiversity Centre 4101 rue Sherbrooke est H1X2B2 Montreal Quebec Canada

Methodology

Study extent

Digitization of vascular plant and bryophyte specimens from the Marie-Victorin Herbarium (MT, including WAT)

Sampling description

Originally, data were manually digitized as text from specimen labels, without photography. Currently, digitization still occurs as before for specific projects, but a new process based on specimen photography has been initiated, with the aim of increasing the pace of data capture. The process is: minimal digitization of specimen, photography (photos stored on photo server accessible via URL address), publication of minimally digitized data with photo. This will be followed eventually by full digitization either of targeted collections or via crowd sourcing (in development). All specimens newly acquired by MT and returned loans are digitized (when data are not provided by donor; MT encourages donors to provide digital data used to generate labels) and photographed.

Quality control

Initially, legacy data had been formatted to fit the new database structure and cleaned as well as possible, though they still contain inconsistencies. They are being corrected both opportunistically and in a systematic manner for determinations and geography data. Inaccurate georeferenced data are currently being corrected. New records are entered using controlled vocabularies where relevant and should contain fewer errors. Data from donations are processed via a workbench and compared with the controlled vocabularies to ensure consistency. Specimens are validated by a taxonomist before databasing to ensure identification accuracy.

Method Steps

  1. Examine specimen and annotations labels. Verify and update determination if qualified. Search specimen record in collection database and update where necessary, or create new record and populate fields with the information on the specimen label. Use controlled vocabularies where relevant. Determinations are recorded in a related table (included in this dataset as http://rs.gbif.org/extension/dwc/identification.xml), as are related projects and specimen exchange history.
  2. Verify locality provided on specimen labels with online databases to ensure quality of geographic data. Georeferences provided on labels are validated using online maps and GIS tools and corrected at need, with the addition of a measure of inaccuracy.
  3. Print the newly generated specimen number onto the physical specimen, to be used as reference to the datase and as accession number in the collection.

Specimen Preservation method

Mounted