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How do newly-described diatom species affect biomonitoring? – An example of Gomphonema paratergestinum vs. G. tergestinum

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2018
ba_4647.pdf (1.576Mb)
Authors
Vidaković, Danijela
Krizmanić, Jelena
Levkov, Zlatko
Rakočević, Jelena
Loshkoska, Tatjana
Patceva, Suzana
Kupe, Lirika
Schneider, Susanne
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Abstract
Over the past decade a great number of new diatom taxa was described, as well as re-definitions and delimitations of taxa from different species complexes have been performed. The reasons for the constant increase in the number of described diatom taxa are numerous: unexplored habitats, improved light microscope resolution and digital cameras with accompanying softwares, scanning electron microscopy, molecular studies. For most of the newly-described species only morphological characteristics are known. What about their ecological preferences? OMNIDIA is a widely used software for evaluation of ecological status of water bodies based on diatoms. The database from the first version of the software up to today has grown from 2035 to more than 23.000 diatom taxa. However, for the most newly-described taxa there are no indicator values. In our study we evaluated the ecological status at six sites in lakes Ohrid and Prespa, respectively, based on different biological quality elements (dia...toms, macrozoobenthos and macrophytes) as well as water chemistry. In two out of six sites in lake Ohrid, and five out of six sites in lake Prespa, Gomphonema paratergestinum was a dominant or subdominant species (33.5-69.66 % in Ohrid Lake and 9.95-65.34 % in Prespa Lake). In the OMNIDIA software, there currently are no indicator values for G. paratergestinum. However, the very similar species G. tergestinum has well known indictor values. G. paratergestinum resembles G. tergestinum with respect to some morphological characteristics (e.g. valve outline), but can be differentiated by the stria density. Both species were present in lakes Ohrid and Prespa, however, with dominance of G. paratergestinum. Based on the diatoms recorded at a site, OMNIDIA calculates diatom index values. How could G. paratergestinum with abundances up to 69.66 % influence diatom indices? If we “experiment” and substitute G. paratergestinum with G. tergestinum, the obtained diatom index values indicated a completely different ecological quality class. Every newly-described species is important since it increases our knowledge about diversity, biogeography and distribution of diatoms. However, there still is a gap between taxonomy and biomonitoring. How can we overcome this problem? According to the Botanical Nomenclature Code for algae, fungi, and plants no note or suggestion regarding ecology or ecological preferences of a species is required for description. Maybe, a possible solution could be that in the description of the species ecological data, such as pH, conductivity, total phosphorus, concentrations of different anions etc. should be included. Scientists today join forces to review material and species collected by Kützing, Ehrenberg, Grunow, Van Heurck, Cleve etc... In the same way ecological data of newly-described species could be assembled and their indicator values calculated.

Keywords:
diatoms / ecology / ecological preferences
Source:
Abstracts of the 25th International Diatom Symposium, 2018, 182-182
Publisher:
  • Berlin : Botanic Garden and Botanical Museum, Berlin Freie Universität Berlin

DOI: 10.3372/ids2018

ISBN: 978-3-946292-27-2

[ Google Scholar ]
URI
https://www.botanischer-garten-berlin.de/sites/default/files/25th_international_diatom_symposium_berlin_2018_abstracts.pdf
https://cer.ihtm.bg.ac.rs/handle/123456789/4647
Collections
  • Radovi istraživača pre dolaska u IHTM / Researchers' papers before joining ICTM
Institution/Community
IHTM
TY  - CONF
AU  - Vidaković, Danijela
AU  - Krizmanić, Jelena
AU  - Levkov, Zlatko
AU  - Rakočević, Jelena
AU  - Loshkoska, Tatjana
AU  - Patceva, Suzana
AU  - Kupe, Lirika
AU  - Schneider, Susanne
PY  - 2018
UR  - https://www.botanischer-garten-berlin.de/sites/default/files/25th_international_diatom_symposium_berlin_2018_abstracts.pdf
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4647
AB  - Over the past decade a great number of new diatom taxa was described, as well as re-definitions and delimitations of taxa from different species complexes have been performed. The reasons for the constant increase in the number of described diatom taxa are numerous: unexplored habitats, improved light microscope resolution and digital cameras with accompanying softwares, scanning electron microscopy, molecular studies. For most of the newly-described species only morphological characteristics are known. What about their ecological preferences?
OMNIDIA is a widely used software for evaluation of ecological status of water bodies based on diatoms. The database from the first version of the software up to today has grown from 2035 to more than 23.000 diatom taxa. However, for the most newly-described taxa there are no indicator values.
In our study we evaluated the ecological status at six sites in lakes Ohrid and Prespa, respectively, based on different biological quality elements (diatoms, macrozoobenthos and macrophytes) as well as water chemistry. In two out of six sites in lake Ohrid, and five out of six sites in lake Prespa, Gomphonema paratergestinum was a dominant or subdominant species (33.5-69.66 % in Ohrid Lake and 9.95-65.34 % in Prespa Lake). In the OMNIDIA software, there currently are no indicator values for G. paratergestinum. However, the very similar species G. tergestinum has well known indictor values. G. paratergestinum resembles G. tergestinum with respect to some morphological characteristics (e.g. valve outline), but can be differentiated by the stria density. Both species were present in lakes Ohrid and Prespa, however, with dominance of G. paratergestinum. Based on the diatoms recorded at a site, OMNIDIA calculates diatom index values. How could G. paratergestinum with abundances up to 69.66 % influence diatom indices? If we “experiment” and substitute G. paratergestinum with G. tergestinum, the obtained diatom index values indicated a completely different ecological quality class.
Every newly-described species is important since it increases our knowledge about diversity, biogeography and distribution of diatoms. However, there still is a gap between taxonomy and biomonitoring. How can we overcome this problem? According to the Botanical Nomenclature Code for algae, fungi, and plants no note or suggestion regarding ecology or ecological preferences of a species is required for description. Maybe, a possible solution could be that in the description of the species ecological data, such as pH, conductivity, total phosphorus, concentrations of different anions etc. should be included. Scientists today join forces to review material and species collected by Kützing, Ehrenberg, Grunow, Van Heurck, Cleve etc... In the same way ecological data of newly-described species could be assembled and their indicator values calculated.
PB  - Berlin : Botanic Garden and Botanical Museum, Berlin Freie Universität Berlin
C3  - Abstracts of the 25th International Diatom Symposium
T1  - How do newly-described diatom species affect biomonitoring? – An example of Gomphonema paratergestinum vs. G. tergestinum
SP  - 182
EP  - 182
DO  - 10.3372/ids2018
ER  - 
@conference{
author = "Vidaković, Danijela and Krizmanić, Jelena and Levkov, Zlatko and Rakočević, Jelena and Loshkoska, Tatjana and Patceva, Suzana and Kupe, Lirika and Schneider, Susanne",
year = "2018",
abstract = "Over the past decade a great number of new diatom taxa was described, as well as re-definitions and delimitations of taxa from different species complexes have been performed. The reasons for the constant increase in the number of described diatom taxa are numerous: unexplored habitats, improved light microscope resolution and digital cameras with accompanying softwares, scanning electron microscopy, molecular studies. For most of the newly-described species only morphological characteristics are known. What about their ecological preferences?
OMNIDIA is a widely used software for evaluation of ecological status of water bodies based on diatoms. The database from the first version of the software up to today has grown from 2035 to more than 23.000 diatom taxa. However, for the most newly-described taxa there are no indicator values.
In our study we evaluated the ecological status at six sites in lakes Ohrid and Prespa, respectively, based on different biological quality elements (diatoms, macrozoobenthos and macrophytes) as well as water chemistry. In two out of six sites in lake Ohrid, and five out of six sites in lake Prespa, Gomphonema paratergestinum was a dominant or subdominant species (33.5-69.66 % in Ohrid Lake and 9.95-65.34 % in Prespa Lake). In the OMNIDIA software, there currently are no indicator values for G. paratergestinum. However, the very similar species G. tergestinum has well known indictor values. G. paratergestinum resembles G. tergestinum with respect to some morphological characteristics (e.g. valve outline), but can be differentiated by the stria density. Both species were present in lakes Ohrid and Prespa, however, with dominance of G. paratergestinum. Based on the diatoms recorded at a site, OMNIDIA calculates diatom index values. How could G. paratergestinum with abundances up to 69.66 % influence diatom indices? If we “experiment” and substitute G. paratergestinum with G. tergestinum, the obtained diatom index values indicated a completely different ecological quality class.
Every newly-described species is important since it increases our knowledge about diversity, biogeography and distribution of diatoms. However, there still is a gap between taxonomy and biomonitoring. How can we overcome this problem? According to the Botanical Nomenclature Code for algae, fungi, and plants no note or suggestion regarding ecology or ecological preferences of a species is required for description. Maybe, a possible solution could be that in the description of the species ecological data, such as pH, conductivity, total phosphorus, concentrations of different anions etc. should be included. Scientists today join forces to review material and species collected by Kützing, Ehrenberg, Grunow, Van Heurck, Cleve etc... In the same way ecological data of newly-described species could be assembled and their indicator values calculated.",
publisher = "Berlin : Botanic Garden and Botanical Museum, Berlin Freie Universität Berlin",
journal = "Abstracts of the 25th International Diatom Symposium",
title = "How do newly-described diatom species affect biomonitoring? – An example of Gomphonema paratergestinum vs. G. tergestinum",
pages = "182-182",
doi = "10.3372/ids2018"
}
Vidaković, D., Krizmanić, J., Levkov, Z., Rakočević, J., Loshkoska, T., Patceva, S., Kupe, L.,& Schneider, S.. (2018). How do newly-described diatom species affect biomonitoring? – An example of Gomphonema paratergestinum vs. G. tergestinum. in Abstracts of the 25th International Diatom Symposium
Berlin : Botanic Garden and Botanical Museum, Berlin Freie Universität Berlin., 182-182.
https://doi.org/10.3372/ids2018
Vidaković D, Krizmanić J, Levkov Z, Rakočević J, Loshkoska T, Patceva S, Kupe L, Schneider S. How do newly-described diatom species affect biomonitoring? – An example of Gomphonema paratergestinum vs. G. tergestinum. in Abstracts of the 25th International Diatom Symposium. 2018;:182-182.
doi:10.3372/ids2018 .
Vidaković, Danijela, Krizmanić, Jelena, Levkov, Zlatko, Rakočević, Jelena, Loshkoska, Tatjana, Patceva, Suzana, Kupe, Lirika, Schneider, Susanne, "How do newly-described diatom species affect biomonitoring? – An example of Gomphonema paratergestinum vs. G. tergestinum" in Abstracts of the 25th International Diatom Symposium (2018):182-182,
https://doi.org/10.3372/ids2018 . .

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