Usnea lichen community biomass estimation on volcanic mesas,
James Ross Island, Antarctica

J 2012

Usnea lichen community biomass estimation on volcanic mesas, James Ross Island, Antarctica

BOHUSLAVOVÁ, Olga, Petr SMILAUER and Josef ELSTER

Basic information

Original name

Usnea lichen community biomass estimation on volcanic mesas, James Ross Island, Antarctica

Authors

BOHUSLAVOVÁ, Olga (203 Czech Republic, guarantor, belonging to the institution), Petr SMILAUER and Josef ELSTER

Edition

Polar Biology, New York, Springer, 2012, 0722-4060

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10619 Biodiversity conservation

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Full Text

Impact factor

Impact factor: 2.006

RIV identification code

RIV/00216224:14310/12:00107108

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1007/s00300-012-1197-0

UT WoS

000308331600011

Keywords in English

Non-destructive field methods; Lichen biomass estimation; Usnea species; Maritime Antarctica; Image analysis

Abstract

V originále

Ground macrolichens dominated by several species of fruticose Usnea spp. with foliose Leptogium puberulum constitute an important component of the terrestrial ecosystem of James Ross Island. Long-term monitoring of lichen communities in respect to their reaction to ongoing climatic changes in this part of Antarctica became a research task for scientists in recent years. The non-destructive estimation of lichen biomass provides data necessary for the management and protection of Antarctica. We have developed and tested the methodology of non-destructive estimation of biomass of fruticose Usnea species, which predominate in the ice-free tertiary basalt outcrop areas on James Ross Island. In 38 experimental squares (non-destructive measurements), the density and height of lichen thalli were measured and digital photography with ground cover evaluation was performed. Lichen biomass was harvested from 14 experimental squares and analysed for dry mass, chlorophyll a, b content, and thalli surface area (TSA). Predictive linear models were constructed from available non-destructively measured variables with the aim to maximize predictive accuracy for the destructively measured attributes. A total of 82.3 % of variability in the TSA values was explained (87.5 % for biomass determination). Cross-validated prediction error for lichen TSA estimation was 423 cm(2) (11.5 % of the average TSA). In the case of lichen dry mass determination, cross-validated prediction error was 4.53 g m(-2) (7.3 % of the average dry mass). This study proves that macrolichens in maritime Antarctica can be monitored non-destructively by simple field methods combining digital photography and measurements of lichen thalli in botanical squares.

Citovat

BOHUSLAVOVÁ, Olga, Petr SMILAUER and Josef ELSTER. Usnea lichen community biomass estimation on volcanic mesas, James Ross Island, Antarctica. Polar Biology. New York: Springer, 2012, vol. 35, No 10, p. 1563-1572. ISSN 0722-4060. Available from: https://dx.doi.org/10.1007/s00300-012-1197-0.

@article{1600959,
   author = {Bohuslavová, Olga and Smilauer, Petr and Elster, Josef},
   article_location = {New York},
   article_number = {10},
   doi = {http://dx.doi.org/10.1007/s00300-012-1197-0},
   keywords = {Non-destructive field methods; Lichen biomass estimation; Usnea species; Maritime Antarctica; Image analysis},
   language = {eng},
   issn = {0722-4060},
   journal = {Polar Biology},
   title = {Usnea lichen community biomass estimation on volcanic mesas, James Ross Island, Antarctica},
   url = {https://link.springer.com/content/pdf/10.1007%2Fs00300-012-1197-0.pdf},
   volume = {35},
   year = {2012}
}

TY  - JOUR
ID  - 1600959
AU  - Bohuslavová, Olga - Smilauer, Petr - Elster, Josef
PY  - 2012
TI  - Usnea lichen community biomass estimation on volcanic mesas, James Ross Island, Antarctica
JF  - Polar Biology
VL  - 35
IS  - 10
SP  - 1563-1572
EP  - 1563-1572
PB  - Springer
SN  - 07224060
KW  - Non-destructive field methods
KW  - Lichen biomass estimation
KW  - Usnea species
KW  - Maritime Antarctica
KW  - Image analysis
UR  - https://link.springer.com/content/pdf/10.1007%2Fs00300-012-1197-0.pdf
L2  - https://link.springer.com/content/pdf/10.1007%2Fs00300-012-1197-0.pdf
N2  - Ground macrolichens dominated by several species of fruticose Usnea spp. with foliose Leptogium puberulum constitute an important component of the terrestrial ecosystem of James Ross Island. Long-term monitoring of lichen communities in respect to their reaction to ongoing climatic changes in this part of Antarctica became a research task for scientists in recent years. The non-destructive estimation of lichen biomass provides data necessary for the management and protection of Antarctica. We have developed and tested the methodology of non-destructive estimation of biomass of fruticose Usnea species, which predominate in the ice-free tertiary basalt outcrop areas on James Ross Island. In 38 experimental squares (non-destructive measurements), the density and height of lichen thalli were measured and digital photography with ground cover evaluation was performed. Lichen biomass was harvested from 14 experimental squares and analysed for dry mass, chlorophyll a, b content, and thalli surface area (TSA). Predictive linear models were constructed from available non-destructively measured variables with the aim to maximize predictive accuracy for the destructively measured attributes. A total of 82.3 % of variability in the TSA values was explained (87.5 % for biomass determination). Cross-validated prediction error for lichen TSA estimation was 423 cm(2) (11.5 % of the average TSA). In the case of lichen dry mass determination, cross-validated prediction error was 4.53 g m(-2) (7.3 % of the average dry mass). This study proves that macrolichens in maritime Antarctica can be monitored non-destructively by simple field methods combining digital photography and measurements of lichen thalli in botanical squares.
ER  -

BOHUSLAVOVÁ, Olga, Petr SMILAUER and Josef ELSTER. Usnea lichen community biomass estimation on volcanic mesas, James Ross Island, Antarctica. \textit{Polar Biology}. New York: Springer, 2012, vol.~35, No~10, p.~1563-1572. ISSN~0722-4060. Available from: https://dx.doi.org/10.1007/s00300-012-1197-0.

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