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Publication Type J
Authors Sandoval, C; Edding, M
Author Full Name Sandoval, Carolina; Edding, Mario
Title Effects of UV radiation on photosynthesis of Zostera chilensis, from two location of northern Chile
Source REVISTA DE BIOLOGIA MARINA Y OCEANOGRAFIA
Language Spanish
Document Type Article
Author Keywords Photosynthesis; UV radiation; Zostera; seagrasses
Keywords Plus MARINE MACROPHYTES; POSIDONIA-OCEANICA; CLIMATE-CHANGE; ULTRAVIOLET; PHOTOINHIBITION; MORPHOLOGY; SEAGRASSES; GROWTH
Abstract Solar radiation affects the biological and chemical processes on the earth surface. The effect of ultraviolet radiation has been analyzed in marine ecosystems by decreasing the ozone layer, including effects on marine angiosperms. The seagrass beds are ecologically important and productive ecosystems. In Chile the seagrass studies are limited. The objective was to evaluate the effect of UV radiation on the photosynthetic efficiency of Zostera chilensis. Samples in austral summer and winter in Puerto Aldea (30 degrees S) and Salado Bay (27 degrees S) were collected. The collected material was put on outdoor tanksand using light filters the following conditions were created: PAR + UV; PAR and control (without filter), initial measurements were made and 7 days after final measurements. The daily cycle of photosynthesis in Z. chilensis was also measured. For each treatment and the daily cycle of photosynthesis, the photosynthetic efficiency was evaluated through the Fv/Fm parameter using a portable fluorometer. The results showed no differences in the photosynthetic efficiency of plants excluding UV radiation compared to UV exposed, and with respect to the Fv/Fm initial. In the daily cycle higher Fv/ Fm were observed in the morning and evening, and a decrease of Fv/Fm at noon. Z. chilensis photosynthesis is not sensitive to UV radiation and under high solar radiation, photoinhibition mechanism reducing photosynthetic capacity is developed.
Author Address [Sandoval, Carolina; Edding, Mario] Univ Catolica Norte, Fac Ciencias Mar, Dept Biol Marina, Larrondo 1281, Coquimbo, Chile; [Edding, Mario] Univ Catolica Norte, Fac Ciencias Mar, CIDTA, Larrondo 1281, Coquimbo, Chile
Reprint Address Sandoval, C (reprint author), Univ Catolica Norte, Fac Ciencias Mar, Dept Biol Marina, Larrondo 1281, Coquimbo, Chile.
E-mail Address csm018@ucn.cl
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Cited Reference Count 26
Publisher UNIV VALPARAISO
Publisher City VINA DEL MAR
Publisher Address FACULTAD CIENCIAS MAR RECURSOS NATURALES, CASILLA 5080 - RENACA, VINA DEL MAR, 00000, CHILE
ISSN 0717-3326
29-Character Source Abbreviation REV BIOL MAR OCEANOG
ISO Source Abbreviation Rev. Biol. Mar. Oceanogr.
Publication Date APR
Year Published 2015
Volume 50
Supplement 1
Special Issue SI
Beginning Page 187
Ending Page 192
Page Count 6
Web of Science Category Marine & Freshwater Biology; Oceanography
Subject Category Marine & Freshwater Biology; Oceanography
Document Delivery Number CF3VZ
Unique Article Identifier WOS:000352478300005
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