NDLI: A meta-analysis of plant field studies simulating stratospheric ozone depletion

Content Provider	Springer Nature Link
Author	Searles, Peter S. Flint, Stephan D. Caldwell, Martyn M.
Copyright Year	2000
Abstract	The potential effects of increased ultraviolet-B radiation (UV-B, 280–320 nm) simulating stratospheric ozone depletion in field studies with vascular plants have previously been summarized only in narrative literature reviews. In this quantitative synthesis, we have assessed the significance of solar UV-B enhancement for ten commonly measured variables involving leaf pigmentation, plant growth and morphology, and photosynthesis using meta-analytic statistical methods. Of 103 papers published between 1976 and mid-1999 from field studies, more than 450 reports from 62 papers were included in the database. Effects of UV-B were most apparent for the case of UV-B-absorbing compounds with an average increase of approximately 10% across all studies when comparing the ambient solar UV-B control to the treatment (involving ambient UV-B plus a UV-B supplement from special UV lamps). Some morphological parameters such as plant height and leaf mass per area showed little or no response to enhanced UV-B. Leaf photosynthetic processes (leaf gas exchange and chlorophyll fluorescence) and the concentration of photosynthetic pigments (total chlorophylls and carotenoids) were also not affected. Shoot biomass and leaf area showed modest decreases under UV-B enhancement. The reduction in shoot biomass occurred only under very high levels of simulated ozone depletion and leaf area was affected only when studies inappropriately used the plant (i.e., the subreplicate) rather than the plot as the experimental replicate. To the best of our knowledge, this review provides the first quantitative estimates of UV-B effects in field-based studies using all suitable published studies as a database.
Starting Page	1
Ending Page	10
Page Count	10
File Format	PDF
ISSN	00298549
Journal	Oecologia
Volume Number	127
Issue Number	1
e-ISSN	14321939
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2001-03-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ozone depletion Ultraviolet-B Meta-analysis Terrestrial vegetation Ecology Plant Sciences Hydrology/Water Resources
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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