Climate Change + Life Histories

Biology 1510

Alejandra Arango, Ashley MedlockRyan Evans, John Durham, Jeremy Carmack

GroupA25

IntroductionWhat we will be discussing.

Cause of climate change

Effect of climate change on arctic marine life

Case study - Apherusa glacialis

Future consequences of climate change

Figure 1:http://www.sciencedaily.com/releases/2012/09/120913173030.htm#.UFOdjtawXDA.twitter

Why is this happening?The cause of climate changeBurning fossil fuels introduced to carbon cycle

Greenhouse effect

Expansion of Hadley Cell

Warming of the poles

Figure 2:http://www.earth-policy.org/indicators/C52/carbon_emissions_2010

Figure 3:http://www.theresilientearth.com/?q=content/wetter-world-during-eocene

What is happening?The effect of climate change on arctic marine lifeIncrease in density gradient

Primary consumers not receiving proper nutrients

Figure 4:http://www.bio.utexas.edu/faculty/sjasper/Bio213/aquahab.html

Case StudyApherusa glacialis

Nemo hypothesis – downward vertical migration

Pelagic phase

Ascend during spring algal bloom

Figure 5.

http://rsbl.royalsocietypublishing.org/content/early/2012/09/04/rsbl.2012.0517.full.pdf

Nemo: http://images.catchsmile.com/wp-content/uploads/2011/04/Nemo.jpg

Impending consequencesHow climate change will affect future marine life.

Restructuring of food web

Escape of methane gas in the atmosphere

Major fishing areas decrease in size

Figure 6http://oceansnorth.org/climate-change

Conclusion.Take home message.

NPP decreases

Species richness declines

Organisms adapt or die Figure 7

http://www.worldatlas.com/webimage/countrys/polar/arctic.gif

ReferencesLiterature Cited.

Langford, William. 2009. Poleward Expansionof Hadley Cells. University of Guelph.

J. Berge et al. 2012. Retention of ice-associated amphipods: possible consequences for an ice-free Arctic Ocean. Biology Letters

Moore, S.E., and H.P. Huntington. 2008. Arctic marine mammals and climate change: impacts and resilience. Ecological Applications