Studies on the survivability of the invasive diatom Didymosphenia geminata under a range of environmental and chemical conditions / Cathy Kilroy, Amy Lagerstedt, Andrew Davey, Karen Robinson.

Contributor(s): Kilroy, Cathy. (NIWA. Christchurch) | Lagerstedt, Amy. (NIWA. Christchurch) | Davey, Andrew. (NIWA. Christchurch) | Robinson, Karen. (NIWA. Christchurch) | Biosecurity New Zealand.
Material type: materialTypeLabelBookSeries: NIWA client report ; CHC2006-116; NIWA Project ; MAF06506.Publisher: [Wellington, N.Z.] : MAF Biosecurity New Zealand, 2007Description: 110 p. : ill. ; 30 cm.Subject(s): DIDYMOSPHENIA GEMINATA | RESEARCH PROJECTS | SURVIVAL RATES | BIOLOGICAL INVASIONS | DIATOMS | ENVIRONMENTAL CONDITIONS | RIVERS | CHEMICAL CONTROL | SOUTH ISLAND | LAKES | STREAMSHoldings: Electronic Online resources: Click here to access online | Click here to access online Abstract: Since it was first identified in New Zealand in October 2004, the invasive freshwater diatom Didymosphenia geminata (a single-celled alga) has been recorded in at least seven catchments in the South Island. To date, the species has not been recorded in the North Island. b0s In an effort to contain the spread of D. geminata, within two months of the discovery of the alga in New Zealand, preliminary conservative decontamination methods based on the microbial biosafety literature were identified and promoted by Biosecurity New Zealand for decontaminating risk goods that may have come into contact with the alga. Two months later, in February 2005, the decontamination methods were amended and re-issued based on initial results from experimental studies. In November 2005, an extensive gbsCheck Clean Drygcs behaviour change campaign was launched to further increase public awareness of the decontamination methods. b0s The study reported here is part of Biosecurity New Zealandgass ongoing effort to provide validated information to enable freshwater users to reduce the spread of D. geminata. After previously determining how to quickly kill the alga with decontamination treatments, the next priority was to determine how long D. geminata cells might survive if removed from a river and left untreated. ... - Executive summary.
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"December 2006 (revised May 2007)"

Includes bibliographic references.

Since it was first identified in New Zealand in October 2004, the invasive freshwater diatom Didymosphenia geminata (a single-celled alga) has been recorded in at least seven catchments in the South Island. To date, the species has not been recorded in the North Island. b0s In an effort to contain the spread of D. geminata, within two months of the discovery of the alga in New Zealand, preliminary conservative decontamination methods based on the microbial biosafety literature were identified and promoted by Biosecurity New Zealand for decontaminating risk goods that may have come into contact with the alga. Two months later, in February 2005, the decontamination methods were amended and re-issued based on initial results from experimental studies. In November 2005, an extensive gbsCheck Clean Drygcs behaviour change campaign was launched to further increase public awareness of the decontamination methods. b0s The study reported here is part of Biosecurity New Zealandgass ongoing effort to provide validated information to enable freshwater users to reduce the spread of D. geminata. After previously determining how to quickly kill the alga with decontamination treatments, the next priority was to determine how long D. geminata cells might survive if removed from a river and left untreated. ... - Executive summary.

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