Editing Extinction (section)

=== Coextinction ===
{{Main|Coextinction}}
[[File:Giant Haasts eagle attacking New Zealand moa.jpg|thumb|The large [[Haast's eagle]] and [[moa]] from New Zealand]]

Coextinction refers to the loss of a species due to the extinction of another; for example, the extinction of [[parasitism|parasitic]] insects following the loss of their hosts. Coextinction can also occur when a species loses its [[pollinator]], or to [[predator]]s in a [[food chain]] who lose their prey. "Species coextinction is a manifestation of one of the interconnectednesses of organisms in complex ecosystems&nbsp;... While coextinction may not be the most important cause of species extinctions, it is certainly an insidious one."<ref name="Koh">{{cite journal |last1=Koh |first1=Lian Pin |last2=Dunn |first2=Robert R. |last3=Sodhi |first3=Navjot S. |last4=Colwell |first4=Robert K. |last5=Proctor |first5=Heather C. |last6=Smith |first6=Vincent S. |title=Species Coextinctions and the Biodiversity Crisis |journal=Science |date=10 September 2004 |volume=305 |issue=5690 |pages=1632–1634 |doi=10.1126/science.1101101 |pmid=15361627 |bibcode=2004Sci...305.1632K |s2cid=30713492}}</ref> Coextinction is especially common when a [[keystone species]] goes extinct. Models suggest that coextinction is the most common form of [[biodiversity loss]]. There may be a cascade of coextinction across the [[trophic level]]s. Such effects are most severe in [[mutualism (biology)|mutualistic]] and parasitic relationships. An example of coextinction is the [[Haast's eagle]] and the [[moa]]: the Haast's eagle was a predator that became extinct because its food source became extinct. The moa were several species of flightless birds that were a food source for the Haast's eagle.<ref>{{cite journal |last1=Dunn |first1=Robert R. |last2=Harris |first2=Nyeema C. |last3=Colwell |first3=Robert K. |last4=Koh |first4=Lian Pin |last5=Sodhi |first5=Navjot S. |title=The sixth mass coextinction: are most endangered species parasites and mutualists? |journal=Proceedings of the Royal Society B: Biological Sciences |date=7 September 2009 |volume=276 |issue=1670 |pages=3037–3045 |doi=10.1098/rspb.2009.0413 |pmid=19474041 |pmc=2817118}}</ref>