Editing Antarctic krill (section)

===Ocean acidification===
Another challenge for Antarctic krill, as well as many calcifying organisms (corals, bivalve mussels, snails etc.), is the [[Ocean acidification|acidification of the oceans]] caused by increasing levels of carbon dioxide.<ref name="ACECRC">{{cite journal |author=Antarctic Climate and Ecosystems Cooperative Research Centre |title=Position analysis: CO<sub>2</sub> emissions and climate change: OCEAN impacts and adaptation issues |journal=Position Analysis |issn=1835-7911 |year=2008}}</ref> Krill exoskeleton contains carbonate, which is susceptible to dissolution under low [[pH]] conditions. It has already been shown that increased carbon dioxide can disrupt the development of krill eggs and even prevent the juvenile krill from hatching, leading to future geographically widespread decreases in krill hatching success.<ref>{{cite journal |author1=So Kawaguchi |author2=Haruko Kurihara |author3=Robert King |author4=Lillian Hale |author5=Thomas Berli |author6=James P. Robinson |author7=Akio Ishida |author8=Masahide Wakita |author9=Patti Virtue |author10=Stephen Nicol |author11=Atsushi Ishimatsu |year=2011 |title=Will krill fare well under Southern Ocean acidification? |journal=[[Biology Letters]] |volume=7 |issue=2 |pages=288–291 |doi=10.1098/rsbl.2010.0777 |pmid=20943680 |url=http://www.webpages.uidaho.edu/envs501/downloads/Kawaguchi%20et%20al.%202010.pdf |pmc=3061171 |access-date=2011-05-10 |archive-url=https://web.archive.org/web/20110517112321/http://www.webpages.uidaho.edu/envs501/downloads/Kawaguchi%20et%20al.%202010.pdf |archive-date=2011-05-17 |url-status=dead }}</ref><ref>{{cite journal |author1=So Kawaguchi |author2=Akio Ishida |author3=Robert King |author4=Ben Raymond |author5=N. Waller |author6=A. Constable |author7=Stephen Nicol |author8=Masahide Wakita |author9=Atsushi Ishimatsu |year=2013 |title=Risk maps for Antarctic krill under projected Southern Ocean acidification |journal=[[Nature Climate Change]] |volume=3 |issue=9 |pages=843–847 |url=https://www.researchgate.net/publication/249009598 |format=[[Portable Document Format|PDF]]|bibcode=2013NatCC...3..843K |doi=10.1038/nclimate1937 }}</ref> The further effects of ocean acidification on the krill life cycle however remains unclear but scientists fear that it could significantly impact on its distribution, abundance and survival.<ref>{{cite news |title=Swiss marine researcher moving in for the krill |author=Jill Rowbotham |newspaper=[[The Australian]] |date=September 24, 2008 |url=http://www.theaustralian.news.com.au/story/0,25197,24392216-27703,00.html |access-date=September 28, 2008 |archive-url=https://web.archive.org/web/20081211233233/http://www.theaustralian.news.com.au/story/0,25197,24392216-27703,00.html |archive-date=December 11, 2008 |url-status=dead }}</ref><ref>{{cite journal |author1=James C. Orr |author2=Victoria J. Fabry |author3=Olivier Aumont |author4=Laurent Bopp |author5=Scott C. Doney |author-link5=Scott Doney|year=2005 |title=Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms |journal=[[Nature (journal)|Nature]] |volume=437 |issue=7059 |pages=681–686 |doi=10.1038/nature04095 |pmid=16193043 |bibcode=2005Natur.437..681O|s2cid=4306199 |display-authors=etal|url=http://epic.awi.de/13479/1/Orr2005a.pdf |archive-url=https://ghostarchive.org/archive/20221010/http://epic.awi.de/13479/1/Orr2005a.pdf |archive-date=2022-10-10 |url-status=live }}</ref>