Work

Variation in ecophysiological traits of dominant species in open and closed stands of a semiarid sandy grassland

Year: 2005

Type: article

Abstract: Under the continental climate of the Carpathian Basin, semiarid grasslands represent one of the widespread vegetation types.Due to overgrazing and other disturbances, most of the semiarid grasslands in Hungary are the mosaics of more or less degraded patches.Our work has focused on the variations in the ecophysiological traits of the common dominant species in a moderately degraded (vegetation cover 70%) and a strongly degraded stand (vegetation cover 27%) of Potentillo-Festucetum pseudovinae community.As a result of low soil moisture content, species experienced significantly higher leaf water saturation deficit in the open stand.Carotenoid pool was larger for all the species in the strongly degraded stand.The protective xanthophyll cycle pool was also higher in the strongly degraded stand, and reached 30-33% of the total carotenoid content.The potential photochemical efficiency (F v /F m ) was lower for monocot species.There was a decrease in the F v /F m values at noon, which was larger in the strongly degraded stand.

Source: University of Debrecen Electronic Archive (University of Debrecen)

Authors: Szilvia Veres, Orsolya Mile, Réka Láposi, Gyula Lakatos, Ilona Mészáros

Institution: University of Debrecen

Language: English

Topic: Plant Water Relations and Carbon Dynamics

Subfield: Global and Planetary Change

Field: Environmental Science

Domain: Physical Sciences

SDGs: Life on land, Zero hunger

Open Access status: green

Funder: Hungarian Scientific Research Fund

OpenAlex ID: W2188413751

FWCI:

Cites: 8

Cited by:

Related to: 10