Author Correction: A compendium of geochemical information from the Saanich Inlet water column.

In Table 3 of this Data Descriptor the units of Mean_N2O and Mean_CH4 are incorrectly stated as "Nanomolar (µM)". This should instead read "Nanomolar (nM)".

A compendium of multi-omic sequence information from the Saanich Inlet water column.

Marine oxygen minimum zones (OMZs) are widespread regions of the ocean that are currently expanding due to global warming. While inhospitable to most metazoans, OMZs are hotspots for microbial mediated biogeochemical cycling of carbon, nitrogen and sulphur, contributing disproportionately to marine nitrogen loss and climate active trace gas production. Our current understanding of microbial community responses to OMZ expansion is limited by a lack of time-resolved data sets linking multi-omic sequence information (DNA, RNA, protein) to geochemical parameters and process rates. Here, we present six years of time-resolved multi-omic observations in Saanich Inlet, a seasonally anoxic fjord on the coast of Vancouver Island, British Columbia, Canada that undergoes recurring changes in water column oxygenation status. This compendium provides a unique multi-omic framework for studying microbial community responses to ocean deoxygenation along defined geochemical gradients in OMZ waters.

A compendium of geochemical information from the Saanich Inlet water column.

Extensive and expanding oxygen minimum zones (OMZs) exist at variable depths in coastal and open ocean waters. As oxygen levels decline, nutrients and energy are increasingly diverted away from higher trophic levels into microbial community metabolism, resulting in fixed nitrogen loss and production of climate active trace gases including nitrous oxide and methane. While ocean deoxygenation has been reported on a global scale, our understanding of OMZ biology and geochemistry is limited by a lack of time-resolved data sets. Here, we present a historical dataset of oxygen concentrations spanning fifty years and nine years of monthly geochemical time series observations in Saanich Inlet, a seasonally anoxic fjord on the coast of Vancouver Island, British Columbia, Canada that undergoes recurring changes in water column oxygenation status. This compendium provides a unique geochemical framework for evaluating long-term trends in biogeochemical cycling in OMZ waters.

DNA collection from used toothbrushes as a means to decedent identification.

Comparison of DNA profiles is often used in verifying the identification of deceased human beings when other easier, quicker, and less expensive means to identification are not possible. Fifty-five adult subjects divided into 3 groups provided a used toothbrush along with a small bloodstain control for DNA analysis and comparison. Results indicate that there is no significant difference in the quantity and quality of DNA recovered from a toothbrush that has been used for 1 month versus 3 months versus random periods. The results of this study confirm earlier conclusions that a used toothbrush is a reliable source of antemortem DNA from a putative decedent. The use of aviation snips to remove a small portion of the toothbrush head provides an easy, inexpensive method of obtaining a sample for DNA extraction. The authors recommend this method as a standardized technique for use in forensic DNA laboratories.