Strong fluctuations in aboveground population size do not limit genetic diversity in populations of an endangered biennial species

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F18%3A00493339" target="_blank" >RIV/67985939:_____/18:00493339 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/18:10389662

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00442-018-4152-0" target="_blank" >http://dx.doi.org/10.1007/s00442-018-4152-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00442-018-4152-0" target="_blank" >10.1007/s00442-018-4152-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Strong fluctuations in aboveground population size do not limit genetic diversity in populations of an endangered biennial species

Popis výsledku v původním jazyce

Assessing genetic diversity within populations of rare species and understanding its determinants are crucial for efective species protection. While a lot is known about the relationships between genetic diversity, ftness, and current population size, very few studies explored the efects of past population size. Knowledge of past population size may, however, improve our ability to predict future population fates. We studied Gentianella praecox subsp. bohemica, a biennial species with extensive seed bank. We tested the efect of current, past minimal and maximal population size, and harmonic mean of population sizes within the last 15 years on genetic diversity and ftness. Maximum population size over the last 15 years was the best predictor of expected heterozygosity of the populations and was signifcantly related to current population size and management. Plant ftness was signifcantly related to current as well as maximum population size and expected heterozygosity. The results suggested that information on past population size may improve our understanding of contemporary genetic diversity across populations. They demonstrated that despite the strong fuctuations in population size, large reductions in population size do not result in immediate loss of genetic diversity and reduction of fitness within the populations. This is likely due to the seed bank of the species serving as reservoir of the genetic diversity of the populations. From a conservation point of view, this suggests that the restoration of small populations of short-lived species with permanent seed bank is possible as these populations may still be genetically diverse.

Název v anglickém jazyce

Strong fluctuations in aboveground population size do not limit genetic diversity in populations of an endangered biennial species

Popis výsledku anglicky

Assessing genetic diversity within populations of rare species and understanding its determinants are crucial for efective species protection. While a lot is known about the relationships between genetic diversity, ftness, and current population size, very few studies explored the efects of past population size. Knowledge of past population size may, however, improve our ability to predict future population fates. We studied Gentianella praecox subsp. bohemica, a biennial species with extensive seed bank. We tested the efect of current, past minimal and maximal population size, and harmonic mean of population sizes within the last 15 years on genetic diversity and ftness. Maximum population size over the last 15 years was the best predictor of expected heterozygosity of the populations and was signifcantly related to current population size and management. Plant ftness was signifcantly related to current as well as maximum population size and expected heterozygosity. The results suggested that information on past population size may improve our understanding of contemporary genetic diversity across populations. They demonstrated that despite the strong fuctuations in population size, large reductions in population size do not result in immediate loss of genetic diversity and reduction of fitness within the populations. This is likely due to the seed bank of the species serving as reservoir of the genetic diversity of the populations. From a conservation point of view, this suggests that the restoration of small populations of short-lived species with permanent seed bank is possible as these populations may still be genetically diverse.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Oecologia

ISSN

0029-8549

e-ISSN

—

Svazek periodika

187

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

863-872

Kód UT WoS článku

000436242000024

EID výsledku v databázi Scopus

2-s2.0-85045889917