Seasonal variability of photosynthetically active radiation incident on vegetation cover at Vernadsky Station, Galindez Island, Antarctica

LÁSKA, Kamil, Miloš BARTÁK, Pavel PROŠEK, Evgenyi NAKALOV a 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, s. 115-115. ISBN 80-210-3762-8.

Základní údaje

• Originální název: Seasonal variability of photosynthetically active radiation incident on vegetation cover at Vernadsky Station, Galindez Island, Antarctica
• Název česky: Sezónní proměnlivost fotosynteticky aktivního záření dopadajícího na povrch vegetace na stanici Vernadsky, ostrov Galindez, Antarktida
• Autoři: LÁSKA, Kamil (203 Česká republika, garant), Miloš BARTÁK (203 Česká republika), Pavel PROŠEK (203 Česká republika), Evgenyi NAKALOV (804 Ukrajina) a Gennadi MILINEVSKY (804 Ukrajina).
• Vydání: Brno, PHOTOSYNTHESIS AND STRESS, Biophysical and Biochemical methods in Photosynthesis Research, od s. 115-115, 1 s. 2005.
• Nakladatel: Masarykova univerzita, Brno

Další údaje

• Originální jazyk: angličtina
• Typ výsledku: Stať ve sborníku
• Obor: 10500 1.5. Earth and related environmental sciences
• Stát vydavatele: Česká republika
• Utajení: není předmětem státního či obchodního tajemství
• Kód RIV: RIV/00216224:14310/05:00022712
• Organizační jednotka: Přírodovědecká fakulta
• ISBN: 80-210-3762-8
• Klíčová slova anglicky: Antarctic oases; microclimate; global solar radiation; PAR; snow cover; moss carpets; lichens
• Štítky: Antarctic oases, global solar radiation, lichens, microclimate, moss carpets, PAR, Snow Cover
• Příznaky: Mezinárodní význam, Recenzováno

Anotace

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.

Anotace česky

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.

Návaznosti

• MSM 143100007, záměr: Název: Ekologie pobřežní antarktické vegetační oázy

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Ekologie pobřežní antarktické vegetační oázy