نتایج جستجو برای: herbaria
تعداد نتایج: 388 فیلتر نتایج به سال:
A National Forest Inventory (NFI) encompassing the entire territory of Brazil is in progress. It is coordinated and promoted by the Brazilian Forest Service of the Ministry of Environment. In each state, the NFI collaborates with local herbaria by receiving collected plant material and performing species identification. Consultants are hired by the NFI and work at the local herbaria under the s...
PREMISE OF THE STUDY Small herbaria represent a significant portion of herbaria in the United States, but many are not digitizing their collections. METHODS At the Arkansas State University Herbarium (STAR), we have created a viable workflow to help small herbaria begin the digitization process, including suggestions for publishing data on the Internet. We calculated hourly rates of each phas...
This paper presents the findings of a research on the genus Isatis L.(Brassicaceae) in Iran. Isatis specimens kept in major herbaria of Iran were examined carefully. Fresh specimens were collected from Tehran, Mazandaran, Semnan, Hamedan, Kurdistan, W. Azarbaijan , E. Azarbaijan, Ardebil and Ghazvin provinces. Images of type or otherwise valid specimens kept in Viena, Munich, Montpollier and Ke...
Effective workflows are essential components in the digitization of biodiversity specimen collections. To date, no comprehensive, community-vetted workflows have been published for digitizing flat sheets and packets of plants, algae, and fungi, even though latest estimates suggest that only 33% of herbarium specimens have been digitally transcribed, 54% of herbaria use a specimen database, and ...
Herbaria around the world store plant samples collected over the last centuries as dried specimens, typically mounted on cardboard. These specimens, if properly analysed and described scientifically, give an important overview of species-level biodiversity. Estimates indicate that around 80% of the Earth’s flowering plant species have already been described, but where should researchers go look...
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