The nature of dispersal barriers and their impact on regional species pool richness and turnover

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F22%3A00129282" target="_blank" >RIV/00216224:14310/22:00129282 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1111/geb.13517" target="_blank" >https://doi.org/10.1111/geb.13517</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/geb.13517" target="_blank" >10.1111/geb.13517</a>

Result language

angličtina

Original language name

The nature of dispersal barriers and their impact on regional species pool richness and turnover

Original language description

Aim: We document realized and potential global species ranges based on empirically vetted species concepts in conjunction with global climate databases and climate suitability modelling. From this we investigate the nature of dispersal barriers and illustrate how they generate ecological uniqueness. Location: Holarctic. Methods: Fifty-two small body-size (i.e. &lt; 5 mm) land snail taxa within the genera Euconulus, Pupilia and Vertigo were considered. These represent similar to 10% of all small body-size Holarctic land snails and are among the most proficient known passive dispersers. Their potential climatic ranges were determined using Maxent modelling based on 9205 occurrence records. From these we inferred the location, width and nature of isolating barriers and tested for their effects on regional species pool richness and turnover. Results: Use of unvetted traditional taxonomic concepts and unverified occurrence records would have created up to threefold higher or lower estimates of species-specific climatic tolerances than the actual values. Modelling must thus only use high quality occurrence data. All but one taxon were shown at a global scale to possess multiple isolated areas of appropriate climate. While oceans represented the most common barrier (37%), intra-continental barriers were in total almost twice as frequent (inappropriate climate - 29%, habitat/history - 27% and the Greenland ice sheet - 7%). These barriers restricted taxa to only a subset of their potential range, with European taxa possessing approximately twice the global occupancy rates as North American ones (median scores of 62 vs. 34%). As a result, regional taxa pools were three times smaller than their potential sizes, with 50% change in composition occurring over similar to 2600-km distances. Main conclusions: Even for these readily dispersing taxa, isolation barriers prevented species from saturating their potential global range, reduced the size of regional species pools by 2/3, and generated ecological uniqueness between them.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

<a href="/en/project/GA20-18827S" target="_blank" >GA20-18827S: Boreal land snail diversification promoted by isolation through space and time</a><br>

Continuities

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

Publication year

2022

Confidentiality

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

Name of the periodical

Global ecology and biogeography

ISSN

1466-822X

e-ISSN

1466-8238

Volume of the periodical

31

Issue of the periodical within the volume

8

Country of publishing house

US - UNITED STATES

Number of pages

31

Pages from-to

1470-1500

UT code for WoS article

000803073800001

EID of the result in the Scopus database

2-s2.0-85131012402