Seasonal variability of photosynthetically active radiation incident on vegetation cover at Vernadsky Station, Galindez Island, Antarctica
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F05%3A00022712" target="_blank" >RIV/00216224:14310/05:00022712 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Seasonal variability of photosynthetically active radiation incident on vegetation cover at Vernadsky Station, Galindez Island, Antarctica
Original language description
The possible effect of light regime on physiologically active time of moss and lichens cover was evaluated with using of PAR, global solar radiation, surface and soil temperature data at the both stands. The daily sums of the incoming solar radiations fluctuated greatly according to changes in the weather conditions, and essentially replicated the high variability of the cloudiness. During the summer season (October - March) was determined 57 days with the PAR values higher than 1500 umol.m-2.s-1 and only 13 days with the PAR values exceeded the level of 2000 umol.m-2.s-1. The PAR of 2000 umol.m-2.s-1 and higher often occurred for short-time interval of 10 or 20 min within a day. Only in one case (17 December), the level of 2000 umol.m-2.s-1 had a duration over 40 min. Due to PAR reflection from episodic snow deposition on the vegetation surface during summer season, the true number with high PAR incident on the lichens and mosses was reduced.
Czech name
Sezónní proměnlivost fotosynteticky aktivního záření dopadajícího na povrch vegetace na stanici Vernadsky, ostrov Galindez, Antarktida
Czech description
The possible effect of light regime on physiologically active time of moss and lichens cover was evaluated with using of PAR, global solar radiation, surface and soil temperature data at the both stands. The daily sums of the incoming solar radiations fluctuated greatly according to changes in the weather conditions, and essentially replicated the high variability of the cloudiness. During the summer season (October - March) was determined 57 days with the PAR values higher than 1500 umol.m-2.s-1 and only 13 days with the PAR values exceeded the level of 2000 umol.m-2.s-1. The PAR of 2000 umol.m-2.s-1 and higher often occurred for short-time interval of 10 or 20 min within a day. Only in one case (17 December), the level of 2000 umol.m-2.s-1 had a duration over 40 min. Due to PAR reflection from episodic snow deposition on the vegetation surface during summer season, the true number with high PAR incident on the lichens and mosses was reduced.
Classification
Type
D - Article in proceedings
CEP classification
DG - Atmospheric sciences, meteorology
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2005
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
PHOTOSYNTHESIS AND STRESS, Biophysical and Biochemical methods in Photosynthesis Research
ISBN
80-210-3762-8
ISSN
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e-ISSN
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Number of pages
1
Pages from-to
115-115
Publisher name
Masarykova univerzita, Brno
Place of publication
Brno
Event location
Brno
Event date
Jan 1, 2005
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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