Journal
JOURNAL OF APPLIED PHYCOLOGY
Volume 32, Issue 6, Pages 4171-4174Publisher
SPRINGER
DOI: 10.1007/s10811-020-02257-3
Keywords
Ulva ohnoi; Chlorophyta; Chlorophyll content; Optical meter
Funding
- Spanish Ministerio de Ciencia, Innovacion y Universidades [RTI2018-095062-A-C22]
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In situ measurement of chlorophyll concentration, with an optical meter, in the green seaweedUlva ohnoiis presented to estimate the absolute chlorophyll content. The MC-100 optical meter (Apogee Instruments) was used during the study; the optical meter gives chlorophyll content in relative units as Chlorophyll Content Index units (CCI). Absolute chlorophyll content, in mu mol m(-2), was determined by extraction with dimethylformamide, and the chlorophyll concentration was measured with a spectrophotometer. Equations to convert CCI from optical meter to absolute chlorophyll content were presented for total chlorophyll, chlorophylla, and chlorophyllb. Highly linear relationships (r(2)above 0.9,n= 130) were found for total chlorophyll, chlorophylla, and chlorophyllb. In situ non-destructive estimation ofU. ohnoichlorophyll content using the MC-100 portable chlorophyll optical meter was considered convenient, fast, and accurate.
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