If the Virginia Department of Transportation won’t maintain adequate drainage from state highway roadside ditches to avoid flooding of private property and timber, maybe they’ll do it to provide adequate oxygen in Chesapeake Bay area waters for the oysters. Following up on yesterday’s post, this one provides information about a Smithsonian Environmental Research Center (SERC) study and where to find it online.
A Smithsonian Institution press release in February 2015 announced publication of an article, Landscape-Level Variation in Disease Susceptibility Related to Shallow-Water Hypoxia. The details may be more than the casual reader wants to absorb, but the bottom line is the SERC study describes how oysters in Chesapeake Bay area waters are more susceptible to disease when they are exposed to episodes of low dissolved oxygen at night. The locations studied had a depth of less than 6.5 feet and salinity levels typical of many of the shellfish waters around Mathews County.
“We usually think of shallow-water habitats as highly productive refuges from deep-water dead zones,” says Denise Breitburg, marine ecologist at SERC and lead author of the study. “But if low oxygen makes even these shallow waters inhospitable for fish and shellfish, the whole system may suffer.”
(2015) Landscape-Level Variation in Disease Susceptibility Related to Shallow-Water Hypoxia. PLoS ONE 10(2): e0116223. doi: 10.1371/journal.pone.0116223