Suppressing competitive dominants and community restoration with native parasitic plants using the hemiparasitic Rhinanthus alectorolophus and the dominant grass Calamagrostis epigejos

1. Dominance of native or alien competitive plants causes competitive exclusion of subordinate species and represents a major mechanism reducing biodiversity following land-use changes. The successful competitive strategies may, however, be interfered with by parasitic plants, which withdraw resourc...

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Veröffentlicht in:The Journal of applied ecology 2017-10, Vol.54 (5), p.1487-1495
Hauptverfasser: Těšitel, Jakub, Mládek, Jan, Horník, Jan, Těšitelová, Tamara, Adamec, Vojtěch, Tichý, Lubomír
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container_end_page 1495
container_issue 5
container_start_page 1487
container_title The Journal of applied ecology
container_volume 54
creator Těšitel, Jakub
Mládek, Jan
Horník, Jan
Těšitelová, Tamara
Adamec, Vojtěch
Tichý, Lubomír
description 1. Dominance of native or alien competitive plants causes competitive exclusion of subordinate species and represents a major mechanism reducing biodiversity following land-use changes. The successful competitive strategies may, however, be interfered with by parasitic plants, which withdraw resources from other plants' vasculature. Parasitism may strongly reduce the growth of the dominants, which may facilitate regeneration of other species and consequently trigger restoration of natural communities of high diversity. 2. Here, we aim to provide robust empirical evidence demonstrating this restoration potential of parasitic plants. We present a case study testing suppressive effects of hemiparasitic Rhinanthus alectorolophus on competitive grass Calamagrostis epigejos. In recent decades, which is one of the prominent factors causing their biodiversity decline. 3. We conducted three manipulative field experiments testing the effect of sowing of R. alectorolophus in different vegetation types infested by epigejos. Rhinanthus sowing was compared to dif ferent mowing treatments recommended as the 'best practice' management at respective sites. 4. Rhinanthus alectorolophus established itself in most C. epigejos-dominated plots where sow Calamagrostis epigejos was virtually exterminated in 2 years in two of the experiments (dry mea dow and industrial area). In the wet-meadow experiment, the suppressive effect was variable as a result of uneven establishment success of Rhinanthus. In this experiment increased mowing intensity had an additional suppressive effect on C. epigejos. Rhinanthus also increased regeneration potential of other species by a temporary reduction of vegetation density. Restoration of target vegetation composition was, however, dependent on community context. 5. Synthesis and applications. We demonstrated that hemiparasitic Rhinanthus alectoroloph is an accessible and efficient tool for targeted biological control of Calamagrostis epigejos with a great potential to restore infested grassland vegetation. The strong effect of Rhinanthus is caused by interference with the underground storage and clonal growth strategy of Calamagrostis epigejos, which are both traits that underlie its competitive ability. The potential of native parasitic plants should be considered in restoration management of sites infested by competitive dominants, either alien or native.
doi_str_mv 10.1111/1365-2664.12889
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Dominance of native or alien competitive plants causes competitive exclusion of subordinate species and represents a major mechanism reducing biodiversity following land-use changes. The successful competitive strategies may, however, be interfered with by parasitic plants, which withdraw resources from other plants' vasculature. Parasitism may strongly reduce the growth of the dominants, which may facilitate regeneration of other species and consequently trigger restoration of natural communities of high diversity. 2. Here, we aim to provide robust empirical evidence demonstrating this restoration potential of parasitic plants. We present a case study testing suppressive effects of hemiparasitic Rhinanthus alectorolophus on competitive grass Calamagrostis epigejos. In recent decades, which is one of the prominent factors causing their biodiversity decline. 3. We conducted three manipulative field experiments testing the effect of sowing of R. alectorolophus in different vegetation types infested by epigejos. Rhinanthus sowing was compared to dif ferent mowing treatments recommended as the 'best practice' management at respective sites. 4. Rhinanthus alectorolophus established itself in most C. epigejos-dominated plots where sow Calamagrostis epigejos was virtually exterminated in 2 years in two of the experiments (dry mea dow and industrial area). In the wet-meadow experiment, the suppressive effect was variable as a result of uneven establishment success of Rhinanthus. In this experiment increased mowing intensity had an additional suppressive effect on C. epigejos. Rhinanthus also increased regeneration potential of other species by a temporary reduction of vegetation density. Restoration of target vegetation composition was, however, dependent on community context. 5. Synthesis and applications. We demonstrated that hemiparasitic Rhinanthus alectoroloph is an accessible and efficient tool for targeted biological control of Calamagrostis epigejos with a great potential to restore infested grassland vegetation. The strong effect of Rhinanthus is caused by interference with the underground storage and clonal growth strategy of Calamagrostis epigejos, which are both traits that underlie its competitive ability. 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Dominance of native or alien competitive plants causes competitive exclusion of subordinate species and represents a major mechanism reducing biodiversity following land-use changes. The successful competitive strategies may, however, be interfered with by parasitic plants, which withdraw resources from other plants' vasculature. Parasitism may strongly reduce the growth of the dominants, which may facilitate regeneration of other species and consequently trigger restoration of natural communities of high diversity. 2. Here, we aim to provide robust empirical evidence demonstrating this restoration potential of parasitic plants. We present a case study testing suppressive effects of hemiparasitic Rhinanthus alectorolophus on competitive grass Calamagrostis epigejos. In recent decades, which is one of the prominent factors causing their biodiversity decline. 3. We conducted three manipulative field experiments testing the effect of sowing of R. alectorolophus in different vegetation types infested by epigejos. Rhinanthus sowing was compared to dif ferent mowing treatments recommended as the 'best practice' management at respective sites. 4. Rhinanthus alectorolophus established itself in most C. epigejos-dominated plots where sow Calamagrostis epigejos was virtually exterminated in 2 years in two of the experiments (dry mea dow and industrial area). In the wet-meadow experiment, the suppressive effect was variable as a result of uneven establishment success of Rhinanthus. In this experiment increased mowing intensity had an additional suppressive effect on C. epigejos. Rhinanthus also increased regeneration potential of other species by a temporary reduction of vegetation density. Restoration of target vegetation composition was, however, dependent on community context. 5. Synthesis and applications. 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Dominance of native or alien competitive plants causes competitive exclusion of subordinate species and represents a major mechanism reducing biodiversity following land-use changes. The successful competitive strategies may, however, be interfered with by parasitic plants, which withdraw resources from other plants' vasculature. Parasitism may strongly reduce the growth of the dominants, which may facilitate regeneration of other species and consequently trigger restoration of natural communities of high diversity. 2. Here, we aim to provide robust empirical evidence demonstrating this restoration potential of parasitic plants. We present a case study testing suppressive effects of hemiparasitic Rhinanthus alectorolophus on competitive grass Calamagrostis epigejos. In recent decades, which is one of the prominent factors causing their biodiversity decline. 3. We conducted three manipulative field experiments testing the effect of sowing of R. alectorolophus in different vegetation types infested by epigejos. Rhinanthus sowing was compared to dif ferent mowing treatments recommended as the 'best practice' management at respective sites. 4. Rhinanthus alectorolophus established itself in most C. epigejos-dominated plots where sow Calamagrostis epigejos was virtually exterminated in 2 years in two of the experiments (dry mea dow and industrial area). In the wet-meadow experiment, the suppressive effect was variable as a result of uneven establishment success of Rhinanthus. In this experiment increased mowing intensity had an additional suppressive effect on C. epigejos. Rhinanthus also increased regeneration potential of other species by a temporary reduction of vegetation density. Restoration of target vegetation composition was, however, dependent on community context. 5. Synthesis and applications. We demonstrated that hemiparasitic Rhinanthus alectoroloph is an accessible and efficient tool for targeted biological control of Calamagrostis epigejos with a great potential to restore infested grassland vegetation. The strong effect of Rhinanthus is caused by interference with the underground storage and clonal growth strategy of Calamagrostis epigejos, which are both traits that underlie its competitive ability. The potential of native parasitic plants should be considered in restoration management of sites infested by competitive dominants, either alien or native.</abstract><cop>Oxford</cop><pub>John Wiley &amp; Sons Ltd</pub><doi>10.1111/1365-2664.12889</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record>
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source Jstor Complete Legacy; Wiley Online Library; Wiley Online Library Free Content; EZB Electronic Journals Library
subjects Accessibility
Best practice
Biodiversity
Biological control
Business competition
Case studies
clonal plant
Competition
diversity decline
dominance
ecological restoration
ecosystem engineering
Field tests
Grasses
Grasslands
Industrial areas
Interference
Land use
land use change
Management
Mowing
parasitic plant
Parasitic plants
Parasitism
Plants (botany)
Regeneration
Restoration
rhizome
semi‐natural grassland
Species
Species diversity
Storage
Underground storage
Vegetation
title Suppressing competitive dominants and community restoration with native parasitic plants using the hemiparasitic Rhinanthus alectorolophus and the dominant grass Calamagrostis epigejos
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