The effect of sample size and resolution on palaeomalacological
interpretations: a case study from calcareous-fen deposits

k 2015

The effect of sample size and resolution on palaeomalacological interpretations: a case study from calcareous-fen deposits

MOUTELÍKOVÁ, Jitka a Michal HORSÁK

Základní údaje

Originální název

The effect of sample size and resolution on palaeomalacological interpretations: a case study from calcareous-fen deposits

Autoři

MOUTELÍKOVÁ, Jitka a Michal HORSÁK

Vydání

Molluscan Forum, London, 2015

Další údaje

Jazyk

angličtina

Typ výsledku

Prezentace na konferencích

Obor

10600 1.6 Biological sciences

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Označené pro přenos do RIV

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

sample size, resolution, methodology, palaeoecology

Změněno: 15. 1. 2017 17:00, Mgr. Jitka Frodlová, Ph.D.

Anotace

V originále

Traditionally, in central Europe, quaternary mollusc successions are almost exclusively approached on the basis of dug pits, with samples of larger volumes and rather coarser resolution. Although several studies have dealt with the effect of sampling design on palaeoecological interpretation (mainly in palynology), in palaeomalacology this effect has not yet been investigated. We aim to test (1) if and to what extent smaller sample size impoverishes species richness and (2) if fine resolution sampling is worth the effort. We studied fossiliferous sediments of the Holocene age excavated at the Mituchovci spring fen (the White Carpathian Mts, SW Slovakia). Three molluscan successions, differing in sample size (100 ml vs 350 ml) and resolution (5 cm vs ~15 cm), were collected at this single site during 2010 and 2012. A total number of more than 36 thousand specimens of 76 species were determined. Using rarefaction method, we noticed that differences in volume sizes did not have a significant effect on the species richness in this type of environment. Hence, 100 ml samples are sufficient for the analyses in tufa deposits. Although the thickness of sampled layers had no influence on the palaeoecological interpretation, we observed a shift in molluscan diversity peak when different resolutions were applied. Furthermore, the layers of finer resolution allowed a detailed radiocarbon dating and better understanding of trends in species dynamics.

Návaznosti

GAP504/11/0429, projekt VaV

Název: Gradienty prostředí, vegetační dynamika a krajinné změny v Západních Karpatech od pozdního glaciálu po současnost (Akronym: PALAEO-CARPATHIANS)

Investor: Grantová agentura ČR, Environmental gradients, vegetation dynamics and landscape changes in the West Carpathians from the Late Glacial up to the present time

Citovat

MOUTELÍKOVÁ, Jitka a Michal HORSÁK. The effect of sample size and resolution on palaeomalacological interpretations: a case study from calcareous-fen deposits. In Molluscan Forum, London. 2015.

@proceedings{1318387,
   author = {Moutelíková, Jitka and Horsák, Michal},
   booktitle = {Molluscan Forum, London},
   keywords = {sample size, resolution, methodology, palaeoecology},
   language = {eng},
   title = {The effect of sample size and resolution on palaeomalacological interpretations: a case study from calcareous-fen deposits},
   year = {2015}
}

TY  - CONF
ID  - 1318387
AU  - Moutelíková, Jitka - Horsák, Michal
PY  - 2015
TI  - The effect of sample size and resolution on palaeomalacological interpretations: a case study from calcareous-fen deposits
KW  - sample size, resolution, methodology, palaeoecology
N2  - Traditionally, in central Europe, quaternary mollusc successions are almost exclusively approached on the basis of dug pits, with samples of larger volumes and rather coarser resolution. Although several studies have dealt with the effect of sampling design on palaeoecological interpretation (mainly in palynology), in palaeomalacology this effect has not yet been investigated. We aim to test (1) if and to what extent smaller sample size impoverishes species richness and (2) if fine resolution sampling is worth the effort. We studied fossiliferous sediments of the Holocene age excavated at the Mituchovci spring fen (the White Carpathian Mts, SW Slovakia). Three molluscan successions, differing in sample size (100 ml vs 350 ml) and resolution (5 cm vs ~15 cm), were collected at this single site during 2010 and 2012. A total number of more than 36 thousand specimens of 76 species were determined. Using rarefaction method, we noticed that differences in volume sizes did not have a significant effect on the species richness in this type of environment. Hence, 100 ml samples are sufficient for the analyses in tufa deposits. Although the thickness of sampled layers had no influence on the palaeoecological interpretation, we observed a shift in molluscan diversity peak when different resolutions were applied. Furthermore, the layers of finer resolution allowed a detailed radiocarbon dating and better understanding of trends in species dynamics.
ER  -

MOUTELÍKOVÁ, Jitka a Michal HORSÁK. The effect of sample size and resolution on palaeomalacological interpretations: a case study from calcareous-fen deposits. In \textit{Molluscan Forum, London}. 2015.

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