Spatial variability and temporal dynamics of cyanobacteria blooms and water quality parameters in Missisquoi Bay (Lake Champlain)

Content Provider	Semantic Scholar
Author	Melendez-Pastor, Ignacio Isenstein, Elizabeth M. Navarro-Pedreño, Jose Park, M-H.
Copyright Year	2019
Abstract	Cyanobacteria bloom events have been associated with eutrophication processes, along with hydrologic and climate factors. Missisquoi Bay is a portion of Lake Champlain (USA–Canada) that is highly eutrophic and prone to cyanobacteria blooms and cyanotoxins. This study assessed the spatial–temporal influence of nutrients, turbidity and temperature in cyanobacteria distributions during a bloom event in the summer of 2006. Correlations, generalized linear models (GLMs), geostatistics and local indications of spatial association (LISA) autocorrelation analysis tested the influence of nutrient and non-nutrient explanatory variables in cyanobacteria biovolume. Total phosphorus exhibited a high direct correlation with cyanobacteria biovolume. The best performing GLMs included total phosphorus, total nitrogen, Secchi depth (as turbidity) and temperature as explanatory variables of cyanobacteria biovolume. Variogram analysis of those variables resulted in a better understanding of the underlying spatial variation process of the cyanobacteria bloom event. The LISA test revealed a moderate but stable autocorrelation between cyanobacteria biovolume and total phosphorus from 180 to 1,000 m of weight distance, suggesting the possibility of up-scaling the current results to coarse-resolution satellite imagery for more frequent monitoring of bloom events. The LISA test also revealed the spatial–temporal dynamic (movement of cyanobacteria scums) of high cyanobacteria blooms with high total phosphorus concentration. doi: 10.2166/ws.2019.017 om https://iwaponline.com/ws/article-pdf/19/5/1500/570897/ws019051500.pdf 2019 I. Melendez-Pastor (corresponding author) J. Navarro-Pedreño Department of Agrochemistry and Environment, University Miguel Hernandez (UMH), Av/ Universidad s/n, Edificio Alcudia, 03202 Elche, Spain E-mail: imelendez@umh.es E. M. Isenstein Department of Civil and Environmental Engineering, University of Massachusetts Amherst (UMASS), 130 Natural Resources Road, Amherst, Massachusetts 01003, USA M-H. Park Department of Civil and Environmental Engineering, University of California, Los Angeles, USA
Starting Page	1500
Ending Page	1506
Page Count	7
File Format	PDF HTM / HTML
Volume Number	19
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Alternate Webpage(s)	https://doi.org/10.2166/ws.2019.017
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article