LÁSKA, Kamil, Miloš BARTÁK, Pavel PROŠEK, Evgenyi NAKALOV and Gennadi MILINEVSKY. Seasonal variability of photosynthetically active radiation incident on vegetation cover at Vernadsky Station, Galindez Island, Antarctica. In PHOTOSYNTHESIS AND STRESS, Biophysical and Biochemical methods in Photosynthesis Research. Brno: Masarykova univerzita, Brno, 2005, p. 115-115. ISBN 80-210-3762-8.
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Basic information
Original name Seasonal variability of photosynthetically active radiation incident on vegetation cover at Vernadsky Station, Galindez Island, Antarctica
Name in Czech Sezónní proměnlivost fotosynteticky aktivního záření dopadajícího na povrch vegetace na stanici Vernadsky, ostrov Galindez, Antarktida
Authors LÁSKA, Kamil (203 Czech Republic, guarantor), Miloš BARTÁK (203 Czech Republic), Pavel PROŠEK (203 Czech Republic), Evgenyi NAKALOV (804 Ukraine) and Gennadi MILINEVSKY (804 Ukraine).
Edition Brno, PHOTOSYNTHESIS AND STRESS, Biophysical and Biochemical methods in Photosynthesis Research, p. 115-115, 1 pp. 2005.
Publisher Masarykova univerzita, Brno
Other information
Original language English
Type of outcome Proceedings paper
Field of Study 10500 1.5. Earth and related environmental sciences
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
RIV identification code RIV/00216224:14310/05:00022712
Organization unit Faculty of Science
ISBN 80-210-3762-8
Keywords in English Antarctic oases; microclimate; global solar radiation; PAR; snow cover; moss carpets; lichens;
Tags Antarctic oases, global solar radiation, lichens, microclimate, moss carpets, PAR, Snow Cover
Tags International impact, Reviewed
Changed by Changed by: doc. Mgr. Kamil Láska, Ph.D., učo 17016. Changed: 30/6/2008 15:45.
Abstract
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.
Abstract (in Czech)
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.
Links
MSM 143100007, plan (intention)Name: Ekologie pobřežní antarktické vegetační oázy
Investor: Ministry of Education, Youth and Sports of the CR, Ecology of the coastal vegetation
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