Archives: Bibliographies

Title

Phytoplankton responses to biomanipulated grazing pressure and nutrient additions – enclosure studies in unlimed and limed Lake Njupfatet, central Sweden

Publication Type

Journal Article

Year of Publication

2001

Authors

Blomqvist P

Journal

Environmental Pollution

Volume

111

Pagination

333-348

ISBN Number

0269-7491

Keywords

Abstract

URL

Date of Published

2001

Accession Number

WOS:000089978700017

Type of Article

Alternate Journal

Title

Herbivory in variable environments: an experimental test of the effects of vertical mixing and Daphnia on phytoplankton community structure

Publication Type

Journal Article

Year of Publication

2001

Authors

Beisner BE

Journal

Canadian Journal of Fisheries and Aquatic Sciences

Volume

58

Pagination

1371-1379

ISBN Number

0706-652X

Keywords

Daphnia, mesocosm

Abstract

URL

Date of Published

Jul

Accession Number

WOS:000169776600010

Type of Article

Alternate Journal

Title

Pulsing versus constant supply of nutrients (N, P and Si): effect on phytoplankton, mesozooplankton and vertical flux of biogenic matter

Publication Type

Journal Article

Year of Publication

2002

Authors

Svensen C, Nejstgaard JC, Egge JK, Wassman P

Journal

Scientia Marina

Volume

66

Pagination

189-203

ISBN Number

Keywords

nutrient pulsing, new and regenerated production, Gyrodinium aureolum, sedimentation, mesocosm, 27 m3, Espegrend, Bergen, Norway

Abstract

URL

Date of Published

Accession Number

Type of Article

Alternate Journal

Title

Eutrophication and vertical flux: a critical evaluation of silicate addition

Publication Type

Journal Article

Year of Publication

2002

Authors

Svensen C

Journal

Marine Ecology Progress Series

Volume

240

Pagination

21-26

ISBN Number

Keywords

Vertical flux, eutrophication, Silicate, mesocosm, 27 m3, Raunefjord, Bergen, Norway

Abstract

URL

Date of Published

Accession Number

Type of Article

Alternate Journal

Title

Grazing impact of microzooplankton on a diatom bloom in a mesocosm as estimated by pigment specific dilution technique

Publication Type

Journal Article

Year of Publication

2002

Authors

Suzuki K, Tsuda A, Kiyosawa H, Takeda S, Nishioka J, Saino T, Takahashi M, Wong CS

Journal

Journal of Experimental Marine Biology and Ecology

Volume

271

Pagination

99-120

ISBN Number

Keywords

Bloom, mesocosm, microzooplankton, phytoplankton, Pigments, 5 m3, Patricia Bay, Canada

Abstract

URL

Date of Published

Accession Number

Type of Article

Alternate Journal

Title

A risk assessment of pollution: induction of atrazine tolerance in phytoplankton communities in freshwater outdoor mesocosms, using chlorophyll fluorescence as an endpoint

Publication Type

Journal Article

Year of Publication

2002

Authors

Seguin F, LeBihan F, Leboulanger C, Berard A

Journal

Water Research

Volume

36

Pagination

3227-3236

ISBN Number

Keywords

Risk assessment, Aquatic mesocosm, Herbicide, Phytoplankton community tolerance, Fluorescence, mesocosm, Rennes, France, 5 m3

Abstract

We investigated the validity and sensitivity of assessments of the induction of atrazine tolerance in freshwateroutdoor mesocosmic phytoplankton communities, using the in vivo fluorescence of chlorophyll a as an endpoint, formonitoring ecotoxicology and for risk assessment programs applied to phytoplankton contaminated by photosystem IIherbicides. Atrazine inhibits the photosynthetic process, and so the rise in in-vivo fluorescence could be used as aphysiological manifestation of acute toxicity. Short-term tests (1 h) were used, in which increasing concentrations of theherbicide were applied to phytoplankton samples taken every two days from the mesocosms, and used to plot dose–response curves. The concentration at which atrazine increased the fluorescence by 25% relative to control samples wasused to demonstrate the sensitivity of the phytoplankton, and the values found were compared for samples fromdifferent mesocosms (contaminated and non-contaminated). The taxonomic composition of the phytoplankton wasalso determined. The data showed that chronic exposure (25 days) to 30 mg/L of atrazine significantly increased theapparent tolerance of the phytoplankton to further contamination by the same compound. The use of in vivofluorescence of chlorophyll a appears to be a reliable and effective parameter for monitoring the effects of atrazinepollution, and detecting the changes in community tolerance driven by pollution selection pressure. r 2002 ElsevierScience Ltd. All rights reserved.

URL

Date of Published

Accession Number

Type of Article

Alternate Journal

Title

Coccolithovirus (Phycodnaviridae): Characterisation of a new large dsDNA algal virus that infects Emiliana huxleyi

Publication Type

Journal Article

Year of Publication

2002

Authors

Schroeder DC, Oke J, Malin G, Wilson WH

Journal

Archives of Virology

Volume

147

Pagination

1685-1698

ISBN Number

Keywords

Emiliania huxleyi, virus, TEM, mesocosm, Raunefjorden, Espegrend, Bergen, Norway

Abstract

URL

Date of Published

Accession Number

Type of Article

Alternate Journal

Title

The effects of Daphnia on nutrient stoichiometry and filamentous cyanobacteria: a mesocosm experiment in a eutrophic lake

Publication Type

Journal Article

Year of Publication

2002

Authors

Paterson MJ, Findlay DL, Salki AG, Hendzel LL, Hesslein RH

Journal

Freshwater biology

Volume

47

Pagination

1217-1233

ISBN Number

Keywords

cyanobacteria, Canada, Daphnia, eutrophication, stoichiometry, zooplankton grazing, 2 m3, mesocosm, freshwater, experimental lakes area, Ontario

Abstract

URL

Date of Published

Accession Number

Type of Article

Alternate Journal

Title

Grid-generated turbulence in a mesocosm experiment

Publication Type

Journal Article

Year of Publication

2002

Authors

Nerheim S, Stiansen JE, Svensen H

Journal

Hydrobiologia

Volume

484

Pagination

61-73

ISBN Number

Keywords

Turbulence, mesocosm, energy dissipation rate, entrainment, mixing, Raunefjorden, Espegrend, Norway, Bergen, 27 m3

Abstract

URL

Date of Published

Accession Number

Type of Article

Alternate Journal

Title

Micro-optodes in sea ice: a new approach to investigate oxygen dynamics during sea ice formation

Publication Type

Journal Article

Year of Publication

2002

Authors

Mock T, Dieckmann GS, Haas C, Krell A, Tison JL, Belem AL, Papadimitriou S, Thomas DN

Journal

Aquatic Microbial Ecology

Volume

29

Pagination

297-306

ISBN Number

Keywords

Fragilariopsis cylindrus, Oxygen, Methods, Micro-optodes, Sea ice, Biogeochemistry, mesocosm, 4 m3, HSVA test basin, Hamburg, Germany

Abstract

Oxygen micro-optodes were used to measure oxygen dynamics directly within themicrostructure of sea ice by freezing the sensors into the ice during its formation. The experiment wasconducted in a 4 m3 mesocosm filled with artificial seawater and inoculated with a unialgal culture ofthe common Antarctic ice diatom Fragilariopsis cylindrus (Bacillariophyceae) to a final chlorophyll a(chl a) concentration of 11 ?g l–1. Ice growth was initiated 7 d after inoculation by reducing the airtemperature to –10 ± 2°C and terminated 17 d later. The final ice thickness was 27 cm. One optodewas frozen into grease ice and 2 others into the skeletal layer of the growing ice sheet. Increasingoxygen concentrations during ice crystal formation at the water surface and the ice-water interfacerevealed a strong inclusion of oxygen, which was either physically trapped and/or the result ofphotosynthesising diatoms. The major portion of oxygen was present as gas bubbles due to supersaturationas a result of increasing salinity and oxygen production by diatoms. An increase in salinitydue to a concurrent decrease in ice temperatures during subsequent sea ice development reducedthe maximum concentration of dissolved oxygen within brine. Thus, dissolved oxygen concentrationsdecreased over time, whereas gaseous oxygen was released to the atmosphere and seawater. Thesensors are a significant advance on more conventional microelectrodes, because the recordings canbe temperature and salinity compensated in order to obtain precise measurements of oxygen dynamicswith regard to total (dissolved and gaseous) and dissolved oxygen in sea ice. Optodes do notconsume oxygen during measurement over a long period under extreme conditions, which is anotheradvantage for long-term deployment in the field.

URL

Date of Published

Accession Number

Type of Article

Alternate Journal