The Effect of P Enrichment on Exudate Quantity and Bioavailability - a Comparison of Two Macrophyte Species

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F16%3A43890768" target="_blank" >RIV/60076658:12310/16:43890768 - isvavai.cz</a>

Result on the web

<a href="http://link.springer.com/article/10.1007%2Fs13157-016-0785-0" target="_blank" >http://link.springer.com/article/10.1007%2Fs13157-016-0785-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s13157-016-0785-0" target="_blank" >10.1007/s13157-016-0785-0</a>

Result language

angličtina

Original language name

The Effect of P Enrichment on Exudate Quantity and Bioavailability - a Comparison of Two Macrophyte Species

Original language description

We compared exudation and rhizosphere microbial activity of two macrophytes growing in tropical marshes. Eleocharis spp. are adapted to low nutrient level in phosphorus limited conditions, while Typha domingensis is a strong competitor in nutrient enriched areas. In situ measurements of carbon fluxes from roots to interstitial water and C-13 partitioning after pulse-labelling of the plants in a mesocosm experiment were used to estimate root-derived C fluxes to rhizosphere under P limited and enriched conditions. Root-released compounds collected in the field were analysed for dissolved organic C, dissolved nitrogen and their biodegradability was characterized through microbial respiration, N mineralization and phosphatase activity. Independent of P loading, Eleocharis released more C from roots than T. domingensis, and the released compounds were more biodegradable. The two species responded to P enrichment differently. While Eleocharis invested more assimilated C-13 to the belowground (roots, rhizomes and rhizodepositions) after P fertilization, in T. domingensis the belowground investment decreased. The effect of plant species on belowground C allocation was larger than the effect of P enrichment. Low nutrients adapted Eleocharis invested more carbon into exudation and promotion of its rhizosphere microbial community while competitive T. domingensis spent more fixed carbon on its own growth and metabolism.

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

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

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

Name of the periodical

Wetlands

ISSN

0277-5212

e-ISSN

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Volume of the periodical

36

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

789-798

UT code for WoS article

000385162100001

EID of the result in the Scopus database

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