Impact of herbivory and competition on lake ecosystem structure: underwater experimental manipulation

Abstract Two basic ecological relationships, herbivory and competition, distinctively influence terrestrial ecosystem characteristics, such as plant cover, species richness and species composition. We conducted a cage experiment under natural conditions in an aquatic ecosystem to test the impacts of...

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Autores principales:	Ivana Vejříková, Lukáš Vejřík, Jan Lepš, Luboš Kočvara, Zuzana Sajdlová, Martina Čtvrtlíková, Jiří Peterka
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/be5397a7a9174435a5e99da019861eec
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spelling	oai:doaj.org-article:be5397a7a9174435a5e99da019861eec2021-12-02T11:40:16ZImpact of herbivory and competition on lake ecosystem structure: underwater experimental manipulation10.1038/s41598-018-30598-02045-2322https://doaj.org/article/be5397a7a9174435a5e99da019861eec2018-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-30598-0https://doaj.org/toc/2045-2322Abstract Two basic ecological relationships, herbivory and competition, distinctively influence terrestrial ecosystem characteristics, such as plant cover, species richness and species composition. We conducted a cage experiment under natural conditions in an aquatic ecosystem to test the impacts of two treatments combined in a factorial manner: (i) a pulse treatment – removal of dominant competitors among primary producers (macroalgae Chara sp. and Vaucheria sp.), and (ii) a press treatment – preventing herbivore (fish, crayfish) access to caged plots. The plots were sampled once before the treatments were established and four more times within two years. Both treatments had a significantly positive impact on macrophyte cover and species richness and changed the macrophyte species composition. The effect of the macroalgae removal was immediate with the highest species richness occurrence during the first post-treatment monitoring, but the positive effect vanished with time. In contrast, preventing herbivore access had a gradual but long-lasting effect and reached a more steady-state over time. Two of the most common species showed contrasting responses, the palatable Potamogeton pectinatus was most supported by caging, while the distasteful Myriophyllum spicatum preferred open plots. Our findings may be applicable during the revitalisation of aquatic ecosystems that aims to increase macrophyte biodiversity.Ivana VejříkováLukáš VejříkJan LepšLuboš KočvaraZuzana SajdlováMartina ČtvrtlíkováJiří PeterkaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ivana Vejříková Lukáš Vejřík Jan Lepš Luboš Kočvara Zuzana Sajdlová Martina Čtvrtlíková Jiří Peterka Impact of herbivory and competition on lake ecosystem structure: underwater experimental manipulation
description	Abstract Two basic ecological relationships, herbivory and competition, distinctively influence terrestrial ecosystem characteristics, such as plant cover, species richness and species composition. We conducted a cage experiment under natural conditions in an aquatic ecosystem to test the impacts of two treatments combined in a factorial manner: (i) a pulse treatment – removal of dominant competitors among primary producers (macroalgae Chara sp. and Vaucheria sp.), and (ii) a press treatment – preventing herbivore (fish, crayfish) access to caged plots. The plots were sampled once before the treatments were established and four more times within two years. Both treatments had a significantly positive impact on macrophyte cover and species richness and changed the macrophyte species composition. The effect of the macroalgae removal was immediate with the highest species richness occurrence during the first post-treatment monitoring, but the positive effect vanished with time. In contrast, preventing herbivore access had a gradual but long-lasting effect and reached a more steady-state over time. Two of the most common species showed contrasting responses, the palatable Potamogeton pectinatus was most supported by caging, while the distasteful Myriophyllum spicatum preferred open plots. Our findings may be applicable during the revitalisation of aquatic ecosystems that aims to increase macrophyte biodiversity.
format	article
author	Ivana Vejříková Lukáš Vejřík Jan Lepš Luboš Kočvara Zuzana Sajdlová Martina Čtvrtlíková Jiří Peterka
author_facet	Ivana Vejříková Lukáš Vejřík Jan Lepš Luboš Kočvara Zuzana Sajdlová Martina Čtvrtlíková Jiří Peterka
author_sort	Ivana Vejříková
title	Impact of herbivory and competition on lake ecosystem structure: underwater experimental manipulation
title_short	Impact of herbivory and competition on lake ecosystem structure: underwater experimental manipulation
title_full	Impact of herbivory and competition on lake ecosystem structure: underwater experimental manipulation
title_fullStr	Impact of herbivory and competition on lake ecosystem structure: underwater experimental manipulation
title_full_unstemmed	Impact of herbivory and competition on lake ecosystem structure: underwater experimental manipulation
title_sort	impact of herbivory and competition on lake ecosystem structure: underwater experimental manipulation
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/be5397a7a9174435a5e99da019861eec
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Impact of herbivory and competition on lake ecosystem structure: underwater experimental manipulation

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