Forecasting a 2-methylisoborneol outbreak in a brackish lake

2-Methylisoborneol (2-MIB) is the primary cause of the earthy and musty odor produced by cyanobacteria, which deteriorates the quality of fishery products and tap water. Despite the need for controlling outbreaks, few studies have been conducted on 2-MIB in brackish lakes, where capture fisheries ar...

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Veröffentlicht in:Environmental monitoring and assessment 2021-07, Vol.193 (7), p.379-379, Article 379
Hauptverfasser: Shizuka, Kazunori, Maie, Nagamitsu, Kakino, Wataru, Taruya, Hiroyuki, Tanji, Hajime
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container_end_page 379
container_issue 7
container_start_page 379
container_title Environmental monitoring and assessment
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creator Shizuka, Kazunori
Maie, Nagamitsu
Kakino, Wataru
Taruya, Hiroyuki
Tanji, Hajime
description 2-Methylisoborneol (2-MIB) is the primary cause of the earthy and musty odor produced by cyanobacteria, which deteriorates the quality of fishery products and tap water. Despite the need for controlling outbreaks, few studies have been conducted on 2-MIB in brackish lakes, where capture fisheries are active. This study examined the association between water quality and the outbreak of 2-MIB in a brackish lake using statistical analysis of long-term monitoring data and developed forecasting models for 2-MIB outbreaks. We investigated Lake Ogawara, which is a brackish lake with a cool-temperate climate in Japan, where 2-MIB outbreaks frequently occur between August and December. Logistic regression analyses were performed using the outbreak or non-outbreak of 2-MIB (2-MIB(+ / −)) as the dependent variable and water quality parameters as the independent variables. The results suggested that the density of 2-MIB-producing cyanobacteria was higher when (1) dissolved inorganic nitrogen concentrations were low under the relaxation of phosphorus limitation and/or (2) salinity or micronutrient concentrations were high. In addition, we successfully developed forecasting models with a high predictive power that determined 2-MIB(+ / −) in August–December using only two water quality parameters: dissolved inorganic phosphate and pH in April and total nitrogen/total phosphorous and salinity in May.
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subjects 2-Methylisoborneol
Atmospheric Protection/Air Quality Control/Air Pollution
Capture fisheries
Cyanobacteria
Dependent variables
Drinking water
Earth and Environmental Science
Ecology
Ecotoxicology
Environment
Environmental Management
Environmental monitoring
Environmental science
Fisheries
Fishery products
Forecasting
Independent variables
Lakes
Mathematical models
Monitoring/Environmental Analysis
Nitrogen
Odor
Odour
Outbreaks
Parameters
Phosphates
Phosphorus
Salinity
Salinity effects
Statistical analysis
Statistical analysis of data
Statistical methods
Temperate climates
Water quality
title Forecasting a 2-methylisoborneol outbreak in a brackish lake
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