Trophic niche size and overlap in temperate forest land snails
are affected by their lifestyle and body size

J 2023

Trophic niche size and overlap in temperate forest land snails are affected by their lifestyle and body size

NĚMEC, Tomáš, Eva LÍZNAROVÁ a Michal HORSÁK

Základní údaje

Originální název

Trophic niche size and overlap in temperate forest land snails are affected by their lifestyle and body size

Autoři

NĚMEC, Tomáš (203 Česká republika, garant, domácí), Eva LÍZNAROVÁ (203 Česká republika, domácí) a Michal HORSÁK (203 Česká republika, domácí)

Vydání

Contributions to Zoology, Brill Academic Publishers, 2023, 1383-4517

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10613 Zoology

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.200 v roce 2022

Kód RIV

RIV/00216224:14310/23:00134051

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1163/18759866-bja10036

UT WoS

000942136300002

Klíčová slova anglicky

body size; land snails; lifestyle; niche overlap; niche size; stable isotope analysis

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 16. 10. 2023 08:35, Mgr. Marie Šípková, DiS.

Anotace

V originále

Land snails represent a large diversity of species in the forest floor. Some species prefer to stay in the leaf litter, while others like to climb up vegetation. They are considered generalist herbivores/decomposers. Although the exact trophic position of most species is often difficult to determine, a low rate of trophic niche partitioning within an assemblage is assumed. We compared isotopic niche sizes and overlaps between and within four local land snail assemblages using stable isotope Bayesian ellipses. We found significant differences in trophic niche size (expressed by corrected standard ellipse area) as a function of body size and lifestyle. We hypothesised that the larger niche size of smaller and/or arboreal snail species is due to their limited mobility and the presence of spatially structured food resources. In contrast, a broad and similar mixture of leaf litter sources results in a homogeneous diet for individuals of larger, highly mobile, epigean species, i.e., smaller niche size. We documented multiple overlaps of isotopic niches between species within an assemblage, although arboreal species exhibited slightly different niche positions, indicating specific diets. When comparing all pairwise combinations, we found that isotopic niches of species using different lifestyle did not overlap, in contrast to species using similar lifestyle. In addition, the trophic niches of opportunists with respect to lifestyle were intermediate between those of species from the outermost categories. Our results fit the general concept of variable and overlapping trophic niches in co-occurring snail species. However, we were able to demonstrate differences in species that rarely occupy the same microhabitat.

Návaznosti

GA20-18827S, projekt VaV

Název: Diverzifikace boreálních suchozemských plžů podmíněná izolací v prostoru a čase

Investor: Grantová agentura ČR, Boreal land snail diversification promoted by isolation through space and time

Citovat

NĚMEC, Tomáš, Eva LÍZNAROVÁ a Michal HORSÁK. Trophic niche size and overlap in temperate forest land snails are affected by their lifestyle and body size. Contributions to Zoology. Brill Academic Publishers, 2023, roč. 92, č. 1, s. 38-50. ISSN 1383-4517. Dostupné z: https://dx.doi.org/10.1163/18759866-bja10036.

@article{2251029,
   author = {Němec, Tomáš and Líznarová, Eva and Horsák, Michal},
   article_number = {1},
   doi = {http://dx.doi.org/10.1163/18759866-bja10036},
   keywords = {body size; land snails; lifestyle; niche overlap; niche size; stable isotope analysis},
   language = {eng},
   issn = {1383-4517},
   journal = {Contributions to Zoology},
   title = {Trophic niche size and overlap in temperate forest land snails are affected by their lifestyle and body size},
   url = {https://doi.org/10.1163/18759866-bja10036},
   volume = {92},
   year = {2023}
}

TY  - JOUR
ID  - 2251029
AU  - Němec, Tomáš - Líznarová, Eva - Horsák, Michal
PY  - 2023
TI  - Trophic niche size and overlap in temperate forest land snails are affected by their lifestyle and body size
JF  - Contributions to Zoology
VL  - 92
IS  - 1
SP  - 38-50
EP  - 38-50
PB  - Brill Academic Publishers
SN  - 13834517
KW  - body size
KW  - land snails
KW  - lifestyle
KW  - niche overlap
KW  - niche size
KW  - stable isotope analysis
UR  - https://doi.org/10.1163/18759866-bja10036
N2  - Land snails represent a large diversity of species in the forest floor. Some species prefer to stay in the leaf litter, while others like to climb up vegetation. They are considered generalist herbivores/decomposers. Although the exact trophic position of most species is often difficult to determine, a low rate of trophic niche partitioning within an assemblage is assumed. We compared isotopic niche sizes and overlaps between and within four local land snail assemblages using stable isotope Bayesian ellipses. We found significant differences in trophic niche size (expressed by corrected standard ellipse area) as a function of body size and lifestyle. We hypothesised that the larger niche size of smaller and/or arboreal snail species is due to their limited mobility and the presence of spatially structured food resources. In contrast, a broad and similar mixture of leaf litter sources results in a homogeneous diet for individuals of larger, highly mobile, epigean species, i.e., smaller niche size. We documented multiple overlaps of isotopic niches between species within an assemblage, although arboreal species exhibited slightly different niche positions, indicating specific diets. When comparing all pairwise combinations, we found that isotopic niches of species using different lifestyle did not overlap, in contrast to species using similar lifestyle. In addition, the trophic niches of opportunists with respect to lifestyle were intermediate between those of species from the outermost categories. Our results fit the general concept of variable and overlapping trophic niches in co-occurring snail species. However, we were able to demonstrate differences in species that rarely occupy the same microhabitat.
ER  -

NĚMEC, Tomáš, Eva LÍZNAROVÁ a Michal HORSÁK. Trophic niche size and overlap in temperate forest land snails are affected by their lifestyle and body size. \textit{Contributions to Zoology}. Brill Academic Publishers, 2023, roč.~92, č.~1, s.~38-50. ISSN~1383-4517. Dostupné z: https://dx.doi.org/10.1163/18759866-bja10036.

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