Complex sentence: The team/tenure for a particular year may be termed as a Gough Island expedition number-e.g. "Gough Island 58" or just "Gough 58" for 2013 denoting the 58th expedition to Gough Island.
Split into simpler sentences: The team/tenure for a particular year may be termed as a Gough Island expedition number. E.g. "Gough Island 58" or just "Gough 58" for 2013 denoting the 58th expedition to Gough Island.