An ex-situ mesocosm study of emergent macrophyte effects on phytoplankton communities

Song, Y; Mowe, MAD; Mitrovic, SM; Tan, HTW; Yeo, DCJ

An ex-situ mesocosm study of emergent macrophyte effects on phytoplankton communities

Song, Y Mowe, MAD Mitrovic, SM Tan, HTW Yeo, DCJ

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Publisher:: E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG
Publication Type:: Journal Article
Citation:: Fundamental and Applied Limnology, 2019, 192, (3), pp. 225-235
Issue Date:: 2019-04-01

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	ILL Article 2 to Scott M_AN EX-SITU MESOCOSM STUDY OF EMERGENT MACROPHYTE EFFECTS ON PHYTOPLANKTON COMMUNITIES. 27.5.20.pdf	Published version	1.14 MB	Adobe PDF	View/Open

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Field	Value	Language
dc.contributor.author	Song, Y
dc.contributor.author	Mowe, MAD
dc.contributor.author	Mitrovic, SM
dc.contributor.author	Tan, HTW
dc.contributor.author	Yeo, DCJ
dc.date.accessioned	2020-05-27T02:46:23Z
dc.date.available	2020-05-27T02:46:23Z
dc.date.issued	2019-04-01
dc.identifier.citation	Fundamental and Applied Limnology, 2019, 192, (3), pp. 225-235
dc.identifier.issn	1863-9135
dc.identifier.issn	2363-7110
dc.identifier.uri	http://hdl.handle.net/10453/140969
dc.description.abstract	© 2019 E. Schweizerbart’sche Verlagsbuchhandlung, Stuttgart, Germany. Although the ability of submerged macrophytes to inhibit phytoplankton growth has been studied extensively, little has been done for emergent macrophytes. We investigated the effects of four emergent macrophyte species (Brachiaria mutica, Ipomoea aquatica, Ischaemum muticum, Ipomoea pes-caprae) on the phytoplankton community of a eutrophic tropical reservoir with cyanobacterial dominance. A mesocosm experiment was conducted over 28 days by growing macrophytes on a substrate of expanded clay pellets with 18 % surface area coverage in tanks filled with water from a reservoir with phytoplankton dominated by cyanobacteria. Nutrient levels (total nitrogen and total phosphorus concentrations), total phytoplankton biomass and the structure of phytoplankton community were compared over the course of the experiment. All four species of macrophytes did not significantly reduce the total nitrogen, total phosphorus, or phytoplankton biomass. The Ipomoea pes-caprae treatment, however, led to a shift in the phytoplankton community structure with an increased abundance of Aphanocapsa sp., a small-celled colonial cyanobacterium often found dominant in post-restoration phytoplankton communities. This study shows that using the current approach and a planting density reflecting natural conditions, the four macrophyte species tested may not necessarily reduce phytoplankton biomass, but their introduction may lead to phytoplankton community changes.
dc.language	English
dc.publisher	E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG
dc.relation.ispartof	Fundamental and Applied Limnology
dc.relation.isbasedon	10.1127/fal/2019/1179
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	04 Earth Sciences, 06 Biological Sciences, 09 Engineering
dc.subject.classification	Marine Biology & Hydrobiology
dc.title	An ex-situ mesocosm study of emergent macrophyte effects on phytoplankton communities
dc.type	Journal Article
utslib.citation.volume	192
utslib.for	04 Earth Sciences
utslib.for	06 Biological Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2020-05-27T02:46:19Z
pubs.issue	3
pubs.publication-status	Published
pubs.volume	192
utslib.start-page	225
utslib.citation.issue	3

Abstract:

© 2019 E. Schweizerbart’sche Verlagsbuchhandlung, Stuttgart, Germany. Although the ability of submerged macrophytes to inhibit phytoplankton growth has been studied extensively, little has been done for emergent macrophytes. We investigated the effects of four emergent macrophyte species (Brachiaria mutica, Ipomoea aquatica, Ischaemum muticum, Ipomoea pes-caprae) on the phytoplankton community of a eutrophic tropical reservoir with cyanobacterial dominance. A mesocosm experiment was conducted over 28 days by growing macrophytes on a substrate of expanded clay pellets with 18 % surface area coverage in tanks filled with water from a reservoir with phytoplankton dominated by cyanobacteria. Nutrient levels (total nitrogen and total phosphorus concentrations), total phytoplankton biomass and the structure of phytoplankton community were compared over the course of the experiment. All four species of macrophytes did not significantly reduce the total nitrogen, total phosphorus, or phytoplankton biomass. The Ipomoea pes-caprae treatment, however, led to a shift in the phytoplankton community structure with an increased abundance of Aphanocapsa sp., a small-celled colonial cyanobacterium often found dominant in post-restoration phytoplankton communities. This study shows that using the current approach and a planting density reflecting natural conditions, the four macrophyte species tested may not necessarily reduce phytoplankton biomass, but their introduction may lead to phytoplankton community changes.

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http://hdl.handle.net/10453/140969