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EnvironmentOntology / envo

A community-driven ontology for the representation of environments
http://www.environmentontology.org
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ENVO marine oxygen minimum zone lacks defintion #821

Closed kaiiam closed 4 years ago

kaiiam commented 5 years ago

marine oxygen minimum zone currently lacks a definition.

Cross ref to SWEET ISSUE 131

kaiiam commented 5 years ago

First pass at a definition

A marine water mass in which the concentration of dissolved oxygen is low or near zero.

Comment:

Low oxygen rates are typically due to the rate of respiration being greater than the rate of oxygen resupply.
diatomsRcool commented 5 years ago

So if my oceanographic memories are correct, something along the lines of

A marine water mass characterized by having much lower than normal dissolved oxygen concentrations persistently. These low concentrations are NOT due to anthropogenic activity.

kaiiam commented 5 years ago

@diatomsRcool good pass at a definition.

As I specified in the comment, OMZ's are not necessarily directly due to anthropogenic activity but instead to the discrepancy in oxygen consumption and resupply rates.

We could perhaps consider changing the axiom as well? As an OMZ is not necessarily composed primarily of anoxic water. Perhaps we want something like:

decreased concentration and (inheres in some (dioxygen and (part of some sea water)))

mirroring the axiom from the ENVO:concentration of classes.

Thoughts?

pbuttigieg commented 5 years ago

And, just to irk @cmungall, would we want to add this as a true zone (site)?

Unlike the geospatial community, most usages of this term actually refer to the water mass (not the site). But then there's consistency ...

cmungall commented 5 years ago

ENVO_01000065 has causal power so I wouldn't treat it as a bfo:site

Note against relabeled for consistency

Not necessarily opposed to a shadow, but shadows should be added using a defined DP, using an equivalence axiom with a 1:1 (functional/inverseFunctional) object property, explanation coming in a blog post near you soon....