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Porter, Stephen C.; Sauchyn, David J.; Delorme, L. D.

doi:10.1023/a:1008031105186

Cited by 19 publications

(1 citation statement)

References 39 publications

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“…Similarly, linkages among various groups of cyanobacteria, diatoms, and physicochemical variables were observed for primer B in the Qu’Appelle arm (Figure D). As more becomes understood regarding the influence of contemporary environmental variables on co-occurrence patterns in bacterioplankton communities, historical associations derived from seda DNA sequencing can be used to hindcast environmental quality, similar to transfer functions for water quality or temperature based on diatom or aquatic invertebrate calibration data sets. − …”

Section: Resultsmentioning

confidence: 99%

Combining High-Throughput Sequencing of sedaDNA and Traditional Paleolimnological Techniques To Infer Historical Trends in Cyanobacterial Communities

Tse

Doig

Tang

et al. 2018

Environ. Sci. Technol.

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Freshwaters worldwide are under increasing pressure from anthropogenic activities and changing climate. Unfortunately, many inland waters lack sufficient long-term monitoring to assess environmental trends. Analysis of sedimentary ancient DNA ( sedaDNA) is emerging as a means to reconstruct the past occurrence of microbial communities of inland waters. The purpose of this study was to assess a combination of high-throughput sequencing (16S rRNA) of sedaDNA and traditional paleolimnological analyses to explore multidecadal relationships among cyanobacterial community composition, the potential for cyanotoxin production, and paleoenvironmental proxies. DNA was extracted from two sediment cores collected from a northern Canadian Great Plains reservoir. Diversity indices illustrated significant community-level changes since reservoir formation. Furthermore, higher relative abundances in more recent years were observed for potentially toxic cyanobacterial genera including Dolichospermum. Correlation-based network analysis revealed this trend significantly and positively correlated to abundances of the microcystin synthetase gene ( mcyA) and other paleoproxies (nutrients, pigments, stanols, sterols, and certain diatom species), demonstrating synchrony between molecular and more standard proxies. These findings demonstrate a novel approach to infer long-term dynamics of cyanobacterial diversity in inland waters and highlight the power of high-throughput sequencing to reconstruct trends in environmental quality and inform lake and reservoir management and monitoring program design.

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Section: Resultsmentioning

confidence: 99%

Combining High-Throughput Sequencing of sedaDNA and Traditional Paleolimnological Techniques To Infer Historical Trends in Cyanobacterial Communities

Tse

Doig

Tang

et al. 2018

Environ. Sci. Technol.

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Grundlagen zum Marketing, Wettbewerb und deutschen Hochschulsystem

Heiland¹

2001

Marketing Und Wettbewerb Im Deutschen Hochschulsystem

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Quantitative analysis of freshwater ostracode assemblages in southwestern Yukon Territory, Canada

Bunbury

Gajewski

2005

Hydrobiologia

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Relations between modern ostracode assemblages and environmental variables from lakes in the southwest Yukon and northern British Columbia were explored. A total of 29 freshwater species representing 8 genera were identified from the sediments of 36 lakes, with the number of species ranging between 3 and 8 per lake. Species widespread throughout the study area include Cyclocypris ampla, Candona candida, Cypria turneri, Cypria ophtalmica, and Candona protzi. The Mg/Ca ratio is an important factor determining the ostracode species composition of a lake. Species richness is at a maximum when the lake water has intermediate values of conductivity. Lakes in which one species clearly dominates the assemblage (>70% relative abundance) have water saturated with respect to CaCO 3 . Mg/Ca ratio, depth and Sr are the environmental factors that are most highly correlated with species distributions in this region.

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Untitled

Cited by 19 publications

References 39 publications

Combining High-Throughput Sequencing of sedaDNA and Traditional Paleolimnological Techniques To Infer Historical Trends in Cyanobacterial Communities

Combining High-Throughput Sequencing of sedaDNA and Traditional Paleolimnological Techniques To Infer Historical Trends in Cyanobacterial Communities

Grundlagen zum Marketing, Wettbewerb und deutschen Hochschulsystem

Quantitative analysis of freshwater ostracode assemblages in southwestern Yukon Territory, Canada

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