Meanwhile, I asked ChatGPT,

'To your knowledge is there any namespace abbreviation "eco:" in common use?'

To which it replied,

'I'm not aware of any widely recognized or commonly used namespace abbreviation "eco:" that has a specific or standardized meaning. However, namespace abbreviations can be used in various contexts, such as in XML or RDF documents, and may have specific meanings within those contexts. It's possible that "eco:" is used as a namespace abbreviation within a specific community or domain, but without more information about the context or purpose, it's difficult to determine its meaning.'

Then I asked, by way of gauging it's depth of knowledge,

'What about "envo:"?'

To which it replied,

'Yes, "envo:" is a commonly used namespace abbreviation that refers to the "Environment Ontology" (ENVO), which is a community-driven ontology that provides standard terminology for describing environmental systems. The "envo:" namespace is used to identify terms in the ENVO ontology within various contexts, such as in RDF and OWL documents. The ENVO ontology is widely used in the life sciences, particularly in the fields of ecology, microbiology, and biodiversity research, to enable data integration and interoperability across different datasets and research domains.'

Then,

'And "dwc:"?'

To which it replied:

'Yes, "dwc:" is also a commonly used namespace abbreviation that refers to the "Darwin Core" standard. The Darwin Core is a set of standards for sharing biodiversity and ecological data, and is widely used in the life sciences and natural history communities. The "dwc:" namespace is used to identify terms in the Darwin Core standard within various contexts, such as in RDF and XML documents. The Darwin Core standard provides a set of terms for describing various aspects of biodiversity and ecological data, such as taxonomic names, geographic locations, and measurements of organismal traits. The use of the Darwin Core standard and the "dwc:" namespace abbreviation enables data integration and interoperability across different datasets and research domains.'

So, finally,

'And "ecoinv:"?'