Approved ISI journal abbreviation sources:

American Ornithologist's Union:
AOU checklist of Middle and North American Birds:
Avibase: the world bird database:

Taylor and Francis CSE citation style notes:

SIL, the International Society of Limnology:

Inland Waters, a journal of the International Society of Limnology (SIL):

North American Lake Management Society (NALMS):

Style Guidelines for Lake and Reservoir Management, the official journal of NALMS: 

University of Missouri: