Data Set Citation

Dataset Originator/Creator: Wanda Quilhot et al Dataset Title: Lichen secondary products and their importance in environmental studies Dataset Release Date: 1998-05-01 Dataset Release Place: Sao Paulo, Brazil Dataset Publisher: Seaward (Eds) Version: 1 Issue Identification: Lichenology in Latin America: history, current knowledge and applications Data Presentation Form: Tables and graphics

Temporal Coverage

Start Date: 1987-02-05

Stop Date: 1989-12-05

Location Keywords

CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR

Science Keywords

BIOSPHERE >TERRESTRIAL ECOSYSTEMS >ALPINE/TUNDRA    [Definition]

BIOLOGICAL CLASSIFICATION >FUNGI >LICHENS    [Definition]

ISO Topic Category

BIOTA

Quality

Mats of Usnea aurantiaco-atra, growing in an open space, were collected monthly -when possible- in the area of Baliza Poisson, Arturo Prat Base, and Greenwich Island from February 1987 to December 1989. The lichenic material was dried at room temperature and was packed until it was taken to the laboratory. Fifteen erect sterile thalli were chosen randomly from two mats per month. The dry weight of each thallus was estimated in an oven at 50 deg. C; then they were macerated in acetone successively for 72 h and 24 h, at room temperature. The extracts were filtered and combined. The quantification of usnic acid was performed though scanning densitometry (HPTLC).

Access Constraints

Public information

Use Constraints

Public information

Keywords

Antarctic lichens

thalli

lichen metabolites

usnic acid

monthly variations

accumulation rates

catabolism

Baliza Poisson

Arturo Prat Base

Greenwich Island

Data Set Progress

COMPLETE

Data Center

Centro Nacional de Datos Antarticos, Instituto Antartico Chileno, Chile    [Information] Data Center URL: http://www.inach.cl/ Data Center Personnel Name: RICARDO JANA Phone: ++56 /61/ 298135 Fax: ++56 /61/ 298149 Email: rjana at inach.cl Contact Address: Plaza Munoz Gamero 1055 XII Region City: Punta Arenas Country: Chile

Personnel

DORIS NATHALIE JORQUERA Role: DIF AUTHOR Email: djorquer at inach.cl Contact Address: Luis Thayer Ojeda 814 Providencia City: Santiago Country: Chile

WANDA QUILHOT Role: TECHNICAL CONTACT Phone: (32) 28 19 52 Email: wquilhot at uv.cl Contact Address: Universidad de Valparaiso Casilla 5001 City: Valparaiso Country: Chile