Microbiological Studies in Schirmacher Oasis, Antarctica Effect of Temperature on Bacterial Populations

Access URI: http://npdc.ncaor.gov.in/npdc/search_mf_data.action?search=freeText&expedition_type=all&parameter=MF13436131&userType=user&freeTextValue=Microbiological+Studies+in+Schirmacher+Oasis%2C+Antarctica+Effect+of+Temperature+on+Bacterial+Populations

Brief Description (Abstract):

Seasonal and site wise variation in size and diversity of bacterial population was observed in Schirmacher Oasis Antarctica. Prevailing soil temperature limited the distribution and abundance of groups of bacteria like psychrophiles psychrotrophs and mesophiles. Pulses in the bacterial cycle were also found in the Basis as a function of daily and seasonal variations in air and soiltemperature. Requirement of growth temperature of individual bacterium is the best physiological marker to work out the survival strategies of micro organisms. Effect of seasonal variations in temperature was directly manifested in diversity index and generation time of micro organisms. In temperature response study organisms like Serratia were found tolerating very low temperatures(-40?C) indicating the physiological adaptation of bacteria to sub freezing temperatures persisting in Schirmacher Oasis during Antarctic winter.

Status: Completed

Purpose: The existence of an extensive microflora in Antarctic soils is well established (Boyd et al 1966Benoit et al 1970 Evans, 1982 and Matondkar et al 1983) Cameron (1972) attempted a microbiological study of Antarctic ice sheet with reference to survival of viable microbes in dry valleys and mountains of the interior. Some information about distribution pattern of endolithic microbes and its environment are also available (Mckay et al 1985). In all these studies mainly distribution and ecology during austral summers were attempted with few exceptions of round the year studies. Wynn-Williams (1980) studied the decomposer activity over a period of one year at Signy Island.

Presentation Format: Documentdigital

Distribution Format: unknown

Distribution Format Version: unknown

Supplemental Information:

TableDigital

Keyword(s): Earth Science-Biological Classification,

Place/Location(s): Schirmacher Oasis, Antarctic,

Project: Microbiological Studies in Schirmacher Oasis,

Topic Category(s): Biota,

Date(s): 2020-08-25 (Creation),

Resource Contact(s):
1. Name : Dr. S G Prabhu Matondkar
    Role : PrincipalInvestigator
    Phone : 8322525515
    E-Mail : ictd [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Distributor Contact(s):
1. Name : Mr. Sakthivel Samy V
    Role : Distributor
    Phone : +91-832-2525515
    E-Mail : vssamy [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Metadata Contact(s):
1. Name : Mr. Sakthivel Samy V
    Role : PointOfContact
    Phone : +91-832-2525515
    E-Mail : vssamy [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Extent:
Start Date : 1983-01-01
End Date   : 1984-12-31