Compensatory growth in an aquatic plant mediates exploitative competition between seasonally tied herbivores
The degree to which vertebrate herbivores exploitatively compete for the same food plant may depend on the level of compensatory plant growth. Such compensation is higher when there is reduced density-dependent competition in plants after herbivore damage. Whether there is relief from competition ma...
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ftdatacite:10.6084/m9.figshare.c.3301112 2023-05-15T15:59:45+02:00 Compensatory growth in an aquatic plant mediates exploitative competition between seasonally tied herbivores Hidding, Bert Nolet, Bart A. Thijsde Boer Vries, Peter Pde Klaassen, Marcel 2016 https://dx.doi.org/10.6084/m9.figshare.c.3301112 https://figshare.com/collections/Compensatory_growth_in_an_aquatic_plant_mediates_exploitative_competition_between_seasonally_tied_herbivores/3301112 unknown Figshare https://dx.doi.org/10.1890/08-1218.1 CC-BY http://creativecommons.org/licenses/by/3.0/us CC-BY Environmental Science Ecology FOS Biological sciences Collection article 2016 ftdatacite https://doi.org/10.6084/m9.figshare.c.3301112 https://doi.org/10.1890/08-1218.1 2021-11-05T12:55:41Z The degree to which vertebrate herbivores exploitatively compete for the same food plant may depend on the level of compensatory plant growth. Such compensation is higher when there is reduced density-dependent competition in plants after herbivore damage. Whether there is relief from competition may largely be determined by the life-history stage of plants under herbivory. Such stage-specific compensation may apply to seasonal herbivory on the clonal aquatic plant sago pondweed (Potamogeton pectinatus L.). It winters in sediments of shallow lakes as tubers that are foraged upon by Bewick's Swans ( Cygnus columbianus bewickii Yarrell), whereas aboveground biomass in summer is mostly consumed by ducks, coots, and Mute Swans. Here, tuber predation may be compensated due to diminished negative density dependence in the next growth season. However, we expected lower compensation to summer herbivory by waterfowl and fish as density of aboveground biomass in summer is closely related to photosynthetic carbon fixation. In a factorial exclosure study we simultaneously investigated (1) the effect of summer herbivory on aboveground biomass and autumn tuber biomass and (2) the effect of tuber predation in autumn on aboveground biomass and tuber biomass a year later. Summer herbivory strongly influenced belowground tuber biomass in autumn, limiting food availability to Bewick's Swans. In contrast, tuber predation in autumn by Bewick's Swans had a limited and variable effect on P. pectinatus biomass in the following growth season. Whereas relief from negative density dependence largely eliminates effects of belowground herbivory by swans, aboveground herbivory in summer limits both above- and belowground plant biomass. Hence, there was an asymmetry in exploitative competition, with herbivores in summer reducing food availability for belowground herbivores in autumn, but not the other way around. Article in Journal/Newspaper Cygnus columbianus DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Environmental Science Ecology FOS Biological sciences |
spellingShingle |
Environmental Science Ecology FOS Biological sciences Hidding, Bert Nolet, Bart A. Thijsde Boer Vries, Peter Pde Klaassen, Marcel Compensatory growth in an aquatic plant mediates exploitative competition between seasonally tied herbivores |
topic_facet |
Environmental Science Ecology FOS Biological sciences |
description |
The degree to which vertebrate herbivores exploitatively compete for the same food plant may depend on the level of compensatory plant growth. Such compensation is higher when there is reduced density-dependent competition in plants after herbivore damage. Whether there is relief from competition may largely be determined by the life-history stage of plants under herbivory. Such stage-specific compensation may apply to seasonal herbivory on the clonal aquatic plant sago pondweed (Potamogeton pectinatus L.). It winters in sediments of shallow lakes as tubers that are foraged upon by Bewick's Swans ( Cygnus columbianus bewickii Yarrell), whereas aboveground biomass in summer is mostly consumed by ducks, coots, and Mute Swans. Here, tuber predation may be compensated due to diminished negative density dependence in the next growth season. However, we expected lower compensation to summer herbivory by waterfowl and fish as density of aboveground biomass in summer is closely related to photosynthetic carbon fixation. In a factorial exclosure study we simultaneously investigated (1) the effect of summer herbivory on aboveground biomass and autumn tuber biomass and (2) the effect of tuber predation in autumn on aboveground biomass and tuber biomass a year later. Summer herbivory strongly influenced belowground tuber biomass in autumn, limiting food availability to Bewick's Swans. In contrast, tuber predation in autumn by Bewick's Swans had a limited and variable effect on P. pectinatus biomass in the following growth season. Whereas relief from negative density dependence largely eliminates effects of belowground herbivory by swans, aboveground herbivory in summer limits both above- and belowground plant biomass. Hence, there was an asymmetry in exploitative competition, with herbivores in summer reducing food availability for belowground herbivores in autumn, but not the other way around. |
format |
Article in Journal/Newspaper |
author |
Hidding, Bert Nolet, Bart A. Thijsde Boer Vries, Peter Pde Klaassen, Marcel |
author_facet |
Hidding, Bert Nolet, Bart A. Thijsde Boer Vries, Peter Pde Klaassen, Marcel |
author_sort |
Hidding, Bert |
title |
Compensatory growth in an aquatic plant mediates exploitative competition between seasonally tied herbivores |
title_short |
Compensatory growth in an aquatic plant mediates exploitative competition between seasonally tied herbivores |
title_full |
Compensatory growth in an aquatic plant mediates exploitative competition between seasonally tied herbivores |
title_fullStr |
Compensatory growth in an aquatic plant mediates exploitative competition between seasonally tied herbivores |
title_full_unstemmed |
Compensatory growth in an aquatic plant mediates exploitative competition between seasonally tied herbivores |
title_sort |
compensatory growth in an aquatic plant mediates exploitative competition between seasonally tied herbivores |
publisher |
Figshare |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.3301112 https://figshare.com/collections/Compensatory_growth_in_an_aquatic_plant_mediates_exploitative_competition_between_seasonally_tied_herbivores/3301112 |
genre |
Cygnus columbianus |
genre_facet |
Cygnus columbianus |
op_relation |
https://dx.doi.org/10.1890/08-1218.1 |
op_rights |
CC-BY http://creativecommons.org/licenses/by/3.0/us |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.3301112 https://doi.org/10.1890/08-1218.1 |
_version_ |
1766395665935499264 |