Differences in stable isotope compositions of freshwater snails from surface sediments of two Polish shallow lakes
PBN-AR
Instytucja
Wydział Nauk Geograficznych i Geologicznych (Uniwersytet im. Adama Mickiewicza w Poznaniu)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
LIMNOLOGICA
ISSN
0075-9511
EISSN
Wydawca
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI
URL
Rok publikacji
2015
Numer zeszytu
Strony od-do
95-105
Numer tomu
53
Identyfikator DOI
Liczba arkuszy
1,1
Autorzy
(liczba autorów: 3)
Pozostali autorzy
+ 2
Słowa kluczowe
en
Freshwater molluscs
Native European snails
Potamopyrgus antipodarum
Shells
Carbon isotopes
Oxygen isotopes
Streszczenia
Język
en
Treść
The study reports and discusses the differences in d13C and d18O values of shells between several species of freshwater snails. Shells were derived from sediment samples collected from depths of 0.5, 1, 2 and 3 m along transects in two shallow eutrophic lakes located in mid-western Poland. Mean d13C values of the shells ranged between −7.5 and −3.8‰ in Lake Jarosławieckie and between −8.1 and −5.2‰ in Lake Rosnowskie Duże, whereas mean d18O values ranged between −2.2 and −0.2‰ and between −2.2and 0.4‰ respectively in the studied lakes. A similar order of species in terms of shell isotope values, from least to most 13C and18O-depleted was observed in both lakes and seems to indicate constancy of the factors controlling the stable isotope compositions of snail shells. We postulate that the nearly 4‰difference in the mean carbon stable isotope values between the species was primarily controlled by the amount of metabolic carbon incorporated into the shells and the d13C values of the snail food. Different growth cessation temperatures and microhabitats of the species studied result in temporally and spatially varied DIC d13C values, water d18O values and water temperature of shell precipitation, and may thus differentiate the d13C and d18O values of shells. The range of d13C and d18O values of individual shells from a sediment sample (mean 2.35 and 2.15‰, respectively) is interpreted as reflecting an intraspecific variability of isotope compositions in shells from a population and changes of the ambient conditions during the accumulation of the sediment layer. The species-specificity and intraspecific variability in C and O isotopic compositions of shells allow concluding that in palaeolimnological studies, stable isotope analyses should be performed on a set of mono-specific shells representing mean isotope compositions of the species for the interval studied rather than single shells or multispecific bulk shell material.
Cechy publikacji
discipline:Biologia
discipline:Ekologia
discipline:Geologia
discipline:Biology
discipline:Ecology
discipline:Geology
Original article
Original article presents the results of original research or experiment.
Oryginalny artykuł naukowy
Oryginalny artykuł naukowy przedstawia rezultaty oryginalnych badań naukowych lub eksperymentu.
Inne
System-identifier
PBN-R:671327
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