Journal article
Zooplankton dynamics in a highly eutrophic microtidal estuary
Marine Pollution Bulletin, Vol.142, pp.433-451
2019
Abstract
Mesozooplankton was sampled seasonally in a large microtidal estuary (Peel-Harvey) suffering from massive macroalgal growths and cyanobacterial blooms. Comparisons with other estuaries indicate that eutrophication led to copepod abundance declining and macroalgal-associated species increasing. Mesozooplankton species are almost exclusively autochthonous, i.e. spend entire life cycle within the estuary. Meroplanktonic species are virtually absent because main benthic macroinvertebrate species undergo direct benthic rather than planktotrophic development. There are also few abundant holoplanktonic species. Most species are tychoplanktonic, i.e. benthic and transported into plankton through physical disturbance of sediment. Species number, concentration and Simpson's Index are greater during night than day. Annual cyclical changes in species composition are related closely to changes in salinity. At the most degraded site, nematode concentrations were high and the species number and concentration changed markedly during extreme eutrophication, when oxygen concentrations were low, disrupting annual cyclical changes in species composition.
Details
- Title
- Zooplankton dynamics in a highly eutrophic microtidal estuary
- Authors/Creators
- T.H. Rose (Author/Creator)J.R. Tweedley (Author/Creator)R.M. Warwick (Author/Creator)I.C. Potter (Author/Creator)
- Publication Details
- Marine Pollution Bulletin, Vol.142, pp.433-451
- Publisher
- Elsevier BV
- Identifiers
- 991005541342307891
- Copyright
- © 2019 Elsevier Ltd.
- Murdoch Affiliation
- School of Environmental and Conservation Sciences
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.2 Marine Biology
- 3.2.1032 Marine Zooplankton
- Web Of Science research areas
- Environmental Sciences
- Marine & Freshwater Biology
- ESI research areas
- Environment/Ecology