Editing Percolation theory (section)

=== In ecology ===
Percolation theory has been applied to studies of how environment fragmentation impacts animal habitats<ref>{{Cite journal|last1=Boswell|first1=G. P.|last2=Britton|first2=N. F.|last3=Franks|first3=N. R.|date=1998-10-22|title=Habitat fragmentation, percolation theory and the conservation of a keystone species|journal=Proceedings of the Royal Society of London B: Biological Sciences|language=en|volume=265|issue=1409|pages=1921–1925|doi=10.1098/rspb.1998.0521|issn=0962-8452|pmc=1689475}}</ref> and models of how the plague bacterium ''[[Yersinia pestis]]'' spreads.<ref>{{Cite journal|last1=Davis|first1=S.|last2=Trapman|first2=P.|last3=Leirs|first3=H.|last4=Begon|first4=M.|last5=Heesterbeek|first5=J. a. P.|date=2008-07-31|title=The abundance threshold for plague as a critical percolation phenomenon|journal=Nature|volume=454|issue=7204|pages=634–637|doi=10.1038/nature07053|issn=1476-4687|pmid=18668107|bibcode=2008Natur.454..634D|hdl=1874/29683|s2cid=4425203|hdl-access=free}}</ref>