Non-invasive monitoring of photosynthetic activity and water
content in forest lichens by spectral reflectance data and RGB
colors from photographs

J 2023

Non-invasive monitoring of photosynthetic activity and water content in forest lichens by spectral reflectance data and RGB colors from photographs

BEDNAŘÍKOVÁ, Michaela; Yngvar GAUSLAA a Knut Asbjorn SOLHAUG

Základní údaje

Originální název

Non-invasive monitoring of photosynthetic activity and water content in forest lichens by spectral reflectance data and RGB colors from photographs

Autoři

BEDNAŘÍKOVÁ, Michaela (203 Česká republika, domácí); Yngvar GAUSLAA a Knut Asbjorn SOLHAUG

Vydání

Fungal Ecology, Elsevier, 2023, 1754-5048

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10611 Plant sciences, botany

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.900

Kód RIV

RIV/00216224:14310/23:00131229

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1016/j.funeco.2023.101224

UT WoS

000927430800001

EID Scopus

2-s2.0-85147821610

Klíčová slova anglicky

Chlorophyll fluorescence; Desiccation; Lobaria; NDVI; Peltigera; RGB-colors; Reflectance spectra; Quantum yield; Umbilicaria

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 13. 7. 2023 13:40, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

There is a need for non-invasive monitoring of temporal and spatial variation in hydration and photosynthetic activity of red-listed poikilohydric autotrophs. Here, we simultaneously recorded kinetics in RGB-colors (photos), reflectance spectra, water content, maximal (FV/FM), and effective quantum yield of PSII (phi PSII) during desiccation in foliose lichens differing in cortical characteristics and photobionts. The spectral absorbance peaks of chlorophyll a, phycocyanin, and phycoerythrin were clearly displayed at high hydration levels. Brightness and total RGB colors of the lichens strongly increased during desiccation. The normalized difference vegetation index (NDVI) efficiently estimated hydration level and phi PSII - a proxy for lichen photosynthesis - in all species, including threatened old forest lichens. Color and reflectance indices based on green wavelengths gave good estimates of water content in cephalo- and chlorolichens, but not in cyanolichens with a wider range of photosynthetic pigments. Due to species-specific characteristics, species-wise calibration is essential for noninvasive assessments of lichen functioning.

Návaznosti

LM2015078, projekt VaV

Název: Česká polární výzkumná infrastruktura (Akronym: CzechPolar2)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Czech Polar Research Infrastructure

Citovat

BEDNAŘÍKOVÁ, Michaela; Yngvar GAUSLAA a Knut Asbjorn SOLHAUG. Non-invasive monitoring of photosynthetic activity and water content in forest lichens by spectral reflectance data and RGB colors from photographs. Fungal Ecology. Elsevier, 2023, roč. 62, April, s. 1-8. ISSN 1754-5048. Dostupné z: https://dx.doi.org/10.1016/j.funeco.2023.101224.

@article{2297289,
   author = {Bednaříková, Michaela and Gauslaa, Yngvar and Solhaug, Knut Asbjorn},
   article_number = {April},
   doi = {http://dx.doi.org/10.1016/j.funeco.2023.101224},
   keywords = {Chlorophyll fluorescence; Desiccation; Lobaria; NDVI; Peltigera; RGB-colors; Reflectance spectra; Quantum yield; Umbilicaria},
   language = {eng},
   issn = {1754-5048},
   journal = {Fungal Ecology},
   title = {Non-invasive monitoring of photosynthetic activity and water content in forest lichens by spectral reflectance data and RGB colors from photographs},
   url = {https://doi.org/10.1016/j.funeco.2023.101224},
   volume = {62},
   year = {2023}
}

TY  - JOUR
ID  - 2297289
AU  - Bednaříková, Michaela - Gauslaa, Yngvar - Solhaug, Knut Asbjorn
PY  - 2023
TI  - Non-invasive monitoring of photosynthetic activity and water content in forest lichens by spectral reflectance data and RGB colors from photographs
JF  - Fungal Ecology
VL  - 62
IS  - April
SP  - 1-8
EP  - 1-8
PB  - Elsevier
SN  - 17545048
KW  - Chlorophyll fluorescence
KW  - Desiccation
KW  - Lobaria
KW  - NDVI
KW  - Peltigera
KW  - RGB-colors
KW  - Reflectance spectra
KW  - Quantum yield
KW  - Umbilicaria
UR  - https://doi.org/10.1016/j.funeco.2023.101224
N2  - There is a need for non-invasive monitoring of temporal and spatial variation in hydration and photosynthetic activity of red-listed poikilohydric autotrophs. Here, we simultaneously recorded kinetics in RGB-colors (photos), reflectance spectra, water content, maximal (FV/FM), and effective quantum yield of PSII (phi PSII) during desiccation in foliose lichens differing in cortical characteristics and photobionts. The spectral absorbance peaks of chlorophyll a, phycocyanin, and phycoerythrin were clearly displayed at high hydration levels. Brightness and total RGB colors of the lichens strongly increased during desiccation. The normalized difference vegetation index (NDVI) efficiently estimated hydration level and phi PSII - a proxy for lichen photosynthesis - in all species, including threatened old forest lichens. Color and reflectance indices based on green wavelengths gave good estimates of water content in cephalo- and chlorolichens, but not in cyanolichens with a wider range of photosynthetic pigments. Due to species-specific characteristics, species-wise calibration is essential for noninvasive assessments of lichen functioning.
ER  -

BEDNAŘÍKOVÁ, Michaela; Yngvar GAUSLAA a Knut Asbjorn SOLHAUG. Non-invasive monitoring of photosynthetic activity and water content in forest lichens by spectral reflectance data and RGB colors from photographs. \textit{Fungal Ecology}. Elsevier, 2023, roč.~62, April, s.~1-8. ISSN~1754-5048. Dostupné z: https://dx.doi.org/10.1016/j.funeco.2023.101224.

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