Functional groups affect seedling survival both through a negative soil feedback and changes in abiotic conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F16%3A43890763" target="_blank" >RIV/60076658:12310/16:43890763 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.preslia.cz/P163Smilauerova.pdf" target="_blank" >http://www.preslia.cz/P163Smilauerova.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Functional groups affect seedling survival both through a negative soil feedback and changes in abiotic conditions

Popis výsledku v původním jazyce

Seedling establishment, growth and survival are influenced by the competition from neighbouring plants for resources and their effect on the environment, including plant soil feedback. Do species-level mechanisms operate at the functional group level? We used a long-term removal experiment in a temperate grassland to study seedling survival and growth of two forb species and two species of grass in plots with either, only forb, only grass or mixture of grass and forb plants. The seedlings were followed for 16 months and environmental factors measured. All species survived best and grew larger in plots with plants of the same functional group. The largest differences in seedling survival between grass and forb plots were recorded in winter. We therefore carried out an additional experiment that focused on the effects of above-ground biomass and plant soil feedback on overwintering of seedlings. Removal of above-ground plant biomass at the beginning of winter increased seedling survival of all four species in grass plots, but only of the forb species in forb plots. Negative plant soil feedback was detected only for forbs during the winter experiment. At a finer scale in the main experiment, an increasing abundance of conspecific neighbours (of the same functional group) had a negative effect on seedling survival, but in some cases had a positive effect on seedling size. The environmental conditions measured were generally more favourable for seedling establishment in the forb plots (higher PhAR transmission and R/FR ratio in early spring, lower summer soil-surface temperatures, higher soil moisture throughout the season, higher long-term nitrate flow), but in the grass plots seedling establishment was probably enhanced by a higher spatial heterogeneity.

Název v anglickém jazyce

Functional groups affect seedling survival both through a negative soil feedback and changes in abiotic conditions

Popis výsledku anglicky

Seedling establishment, growth and survival are influenced by the competition from neighbouring plants for resources and their effect on the environment, including plant soil feedback. Do species-level mechanisms operate at the functional group level? We used a long-term removal experiment in a temperate grassland to study seedling survival and growth of two forb species and two species of grass in plots with either, only forb, only grass or mixture of grass and forb plants. The seedlings were followed for 16 months and environmental factors measured. All species survived best and grew larger in plots with plants of the same functional group. The largest differences in seedling survival between grass and forb plots were recorded in winter. We therefore carried out an additional experiment that focused on the effects of above-ground biomass and plant soil feedback on overwintering of seedlings. Removal of above-ground plant biomass at the beginning of winter increased seedling survival of all four species in grass plots, but only of the forb species in forb plots. Negative plant soil feedback was detected only for forbs during the winter experiment. At a finer scale in the main experiment, an increasing abundance of conspecific neighbours (of the same functional group) had a negative effect on seedling survival, but in some cases had a positive effect on seedling size. The environmental conditions measured were generally more favourable for seedling establishment in the forb plots (higher PhAR transmission and R/FR ratio in early spring, lower summer soil-surface temperatures, higher soil moisture throughout the season, higher long-term nitrate flow), but in the grass plots seedling establishment was probably enhanced by a higher spatial heterogeneity.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

<a href="/cs/project/GA13-17118S" target="_blank" >GA13-17118S: Od vlastností druhů k jejich chování v přírodě: odpovědi jedinců a populací</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Preslia : časopis České botanické společnosti

ISSN

0032-7786

e-ISSN

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Svazek periodika

88

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

22

Strana od-do

347-368

Kód UT WoS článku

000387096200002

EID výsledku v databázi Scopus

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