Female-biased sex ratio despite the absence of spatial and niche segregation between sexes in alpine populations of dioecious Salix lapponum (Salicaceae)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73596575" target="_blank" >RIV/61989592:15310/19:73596575 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007%2Fs00035-018-0213-6" target="_blank" >https://link.springer.com/article/10.1007%2Fs00035-018-0213-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00035-018-0213-6" target="_blank" >10.1007/s00035-018-0213-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Female-biased sex ratio despite the absence of spatial and niche segregation between sexes in alpine populations of dioecious Salix lapponum (Salicaceae)

Popis výsledku v původním jazyce

Dioecious plants often exhibit deviations from expected 1:1 sex ratios. Genus Salix is a notable example of the female-biased sex ratio. Quite surprisingly, there are very few studies retesting observed bias patterns from the different parts of the species range. We have determined whether isolated subalpine populations of Salix lapponum exhibit a biased secondary sex ratio, measured the size of the plants, and tested the spatial and ecological correlations of the bias at fine and broad scales. Males were generally taller than females, suggesting that a different allocation of resources may occur in both sexes. Despite this, we found consistent female bias with females on average twice as common as males in most populations studied. No correlations of sex ratio with elevation as a proxy of environmental harshness and proportion of non-flowering individuals were found. Additionally, no differences in spatial sex segregation and microhabitat preferences were found between males and females at a fine scale within the studied populations. Our results suggest that the biased sex ratio in S. lapponum is not environment-dependent and probably originates during early stages of ontogenetic development (seeds).

Název v anglickém jazyce

Female-biased sex ratio despite the absence of spatial and niche segregation between sexes in alpine populations of dioecious Salix lapponum (Salicaceae)

Popis výsledku anglicky

Dioecious plants often exhibit deviations from expected 1:1 sex ratios. Genus Salix is a notable example of the female-biased sex ratio. Quite surprisingly, there are very few studies retesting observed bias patterns from the different parts of the species range. We have determined whether isolated subalpine populations of Salix lapponum exhibit a biased secondary sex ratio, measured the size of the plants, and tested the spatial and ecological correlations of the bias at fine and broad scales. Males were generally taller than females, suggesting that a different allocation of resources may occur in both sexes. Despite this, we found consistent female bias with females on average twice as common as males in most populations studied. No correlations of sex ratio with elevation as a proxy of environmental harshness and proportion of non-flowering individuals were found. Additionally, no differences in spatial sex segregation and microhabitat preferences were found between males and females at a fine scale within the studied populations. Our results suggest that the biased sex ratio in S. lapponum is not environment-dependent and probably originates during early stages of ontogenetic development (seeds).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Alpine Botany

ISSN

1664-2201

e-ISSN

—

Svazek periodika

129

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

1-9

Kód UT WoS článku

000461390600001

EID výsledku v databázi Scopus

2-s2.0-85054761987