Effect of sample size and resolution on palaeomalacological interpretation: a case study from Holocene calcareous-fen deposits

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F18%3A00100787" target="_blank" >RIV/00216224:14310/18:00100787 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985939:_____/18:00490294

Výsledek na webu

<a href="http://onlinelibrary.wiley.com/doi/10.1002/jqs.2999/full" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/jqs.2999/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/jqs.2999" target="_blank" >10.1002/jqs.2999</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of sample size and resolution on palaeomalacological interpretation: a case study from Holocene calcareous-fen deposits

Popis výsledku v původním jazyce

This study investigates the effects of sample volume, resolution and accumulation time on the interpretation of a mollusc record from terrestrial deposits. We tested (i) if, and to what extent, small sample sizes impoverish the reconstructed mollusc species richness, and (ii) whether fine-resolution sampling is worth the effort. We analysed three mollusc sequences, covering continuously the entire Holocene, which were collected in a tufa-forming spring fen and differed in sample size and resolution. More than 36 000 specimens of 76 species were processed. Using a rarefaction method, we observed that different sample volumes had a significant effect on the recorded species richness in this type of environment, and 100-cm3 samples seemed to be sufficient for a reliable reconstruction in tufa deposits. Although the thickness of the sampled layers had no influence on the palaeoecological interpretation, we observed a shift in the mollusc diversity peak once different resolutions were applied. Furthermore, the layers of finer resolution allowed detailed radiocarbon dating and better understanding of trends in species dynamics. We also observed significant confounding relationships among the number of species, number of specimens and accumulation time that can be disentangled if a precise depth–age model is available.

Název v anglickém jazyce

Effect of sample size and resolution on palaeomalacological interpretation: a case study from Holocene calcareous-fen deposits

Popis výsledku anglicky

This study investigates the effects of sample volume, resolution and accumulation time on the interpretation of a mollusc record from terrestrial deposits. We tested (i) if, and to what extent, small sample sizes impoverish the reconstructed mollusc species richness, and (ii) whether fine-resolution sampling is worth the effort. We analysed three mollusc sequences, covering continuously the entire Holocene, which were collected in a tufa-forming spring fen and differed in sample size and resolution. More than 36 000 specimens of 76 species were processed. Using a rarefaction method, we observed that different sample volumes had a significant effect on the recorded species richness in this type of environment, and 100-cm3 samples seemed to be sufficient for a reliable reconstruction in tufa deposits. Although the thickness of the sampled layers had no influence on the palaeoecological interpretation, we observed a shift in the mollusc diversity peak once different resolutions were applied. Furthermore, the layers of finer resolution allowed detailed radiocarbon dating and better understanding of trends in species dynamics. We also observed significant confounding relationships among the number of species, number of specimens and accumulation time that can be disentangled if a precise depth–age model is available.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10600 - Biological sciences

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Quaternary Science

ISSN

0267-8179

e-ISSN

—

Svazek periodika

33

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

68-78

Kód UT WoS článku

000423222600003

EID výsledku v databázi Scopus

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