Fungal-mediated mortality explains the different effects of dung leachates on the germination response of grazing increaser and decreaser species

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F16%3A43891359" target="_blank" >RIV/60076658:12310/16:43891359 - isvavai.cz</a>

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S1146609X15300540" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1146609X15300540</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actao.2015.12.004" target="_blank" >10.1016/j.actao.2015.12.004</a>

Result language

angličtina

Original language name

Fungal-mediated mortality explains the different effects of dung leachates on the germination response of grazing increaser and decreaser species

Original language description

Depending on their response to grazing, grassland species can be categorized as grazing increasers or decreasers. Grazing by livestock includes several different activities that can impact species differently. Recent evidence suggest that one of these actions, dung deposition, can reduce the germinative performance of decreaser species, thus favouring increasers. The present study tested the hypothesis that decreased germinative success of decreaser species is caused by a greater activity of fungal pathogens under the influence of dung leachates. We performed a phytotron experiment analysing the germination and fungal infections of fourteen species from Mediterranean grasslands. Species were grouped into phylogenetically-related pairs, composed of an increaser and a decreaser species. Seeds of each species were germinated under four different treatments (control, dung leachate addition, fungicide addition and dung leachate and fungicide addition), and the differences in germination percentage, germination speed and infection rate between each increaser species and its decreaser counterpart were analysed. Decreaser species were more affected by mortality than increaser ones, and these differences were higher under the presence of dung leachates. The differences in germinative performance after excluding the effect of seed mortality did not differ between treatments, showing that the main mechanism by which dung leachates favour increaser species is through increased mortality of the seeds of decreaser species. Drastic reductions in the number of dead seeds in the treatments including fungicide addition further revealed that fungal pathogens are responsible for these differences between species with different grazing response. T

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EH - Ecology - communities

OECD FORD branch

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Project

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Continuities

R - Projekt Ramcoveho programu EK

Publication year

2016

Confidentiality

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

Name of the periodical

Acta Oecologica

ISSN

1146-609X

e-ISSN

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Volume of the periodical

70

Issue of the periodical within the volume

JAN 2016

Country of publishing house

FR - FRANCE

Number of pages

5

Pages from-to

74-78

UT code for WoS article

000370100000010

EID of the result in the Scopus database

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