PP SLIDE #1 - view of tropical lake - http://www.terragalleria.com/images/pacific/samo3874.jpeg

 

PP SLIDE #2 - lake succession - http://www.geography.hunter.cuny.edu/~tbw/wc.notes/15.climates.veg/veg.images/lake.bog.meadow.succession.jpg

 

PP SLIDE #3 - Andean lake, Peru.

 

PP SLIDE #4 - emergence of midges over Lake Victoria; http://www.sel.barc.usda.gov/Diptera/youngent/Images/clouds.gif

 

PP SLIDE #5 - Hippos in pond, Vumbura Camp, Okavango Delta, Botswana.

 

PP SLIDE # 6 - animals near lake; http://www.exzooberance.com/virtual%20zoo/they%20walk/hippopotamus/Hippopotamus%20408004.jpg

 

PP SLIDE #7 - catchment area of lake; http://www.trentu.ca/academic/wsc/images/FF-14_COUTTS%20_EM.jpg

 

PP SLIDE #8 - zones of a lake: http://www.aquatic.uoguelph.ca/lakes/images/zone.gif

 

PP SLIDE #9 - zonation of littoral vegetation; http://www.rix.dial.pipex.com/tooting/marginal.jpg

 

PP SLIDE #10 - variation in lake levels; eol.jsc.nasa.gov/.../Lake_Poopo_water_Levels.htm

 

PP SLIDE #11 - lake turnover; http://www.emc.maricopa.edu/faculty/farabee/biobk/lake_2.gif

 

PP SLIDE #12 - lake stratification; www.aquatic.uoguelph.ca/lakes/season/page1.htm

 

PP SLIDE # 13 - Summary of thermal stratification in lakes:

1.  isolates hypolimnion; gradients in dissolved oxygen, carbon dioxide, and other chemicals

2.  low oxygen concentration in hypolimnion may result in release of nutrients from sediments

3.  stratification restricts movement of nutrients upward towards epilimnion

4.  nutrient limitation in epilimnion can limit primary & secondary production

5.  stratification can lead to habitat limitation for organisms

6.  overturn that moves nutrients upwards and oxygen downwards can increase primary production

7.  extremely deep lakes may trap nutrients in a deep layer that prevents return to photic zone during seasonal turnover

8.  shallow tropical lakes may stratify and overturn on daily basis

 

PP SLIDE #14 - phytoplankton; http://microbes.limnology.wisc.edu/outreach/images/plankton_tow.gif

 

PP SLIDE #15 - photoinhibition in phytoplankton; http://www.esf.edu/EFB/schulz/Limnology/PIdepth.JPG

 

PP SLIDE #16 - zooplankton; http://www.state.sd.us/DENR/DES/Surfacewater/cerdaph.gif

 

PP SLIDE # 17 - mbunas; http://www.drpez.com/~diccio/foto%20mbunas.jpg

 

PP SLIDE #18 - Chaborus life stages; http://proteomics.uwosh.edu/images/prot%20pics/Chaoborus.gif

 

PP SLIDE # 19 - pyramids of numbers, pyramid of biomass; http://www.nicksnowden.net/images/Ecology/pyramids_number_biomass_colourful.gif

 

PP SLIDE #20 - pyramid of energy with efficiencies; cas.bellarmine.edu/.../OCX/FoodChain/flow04.gif

 

PP SLIDE #21 - lacustrine food web; http://www.yvw.com.au/waterschool/seniors/ecology/freshwatereco/cycle.gif

 

PP SLIDE #22 - food chains; http://pack152.net/AcademicsAndSports/WildlifeConservation/FoodChain.gif

 

PP SLIDE #23 - food chain and energy pyramid; www.eduweb.com/.../food/foodweb2.html

 

PP SLIDE #24 - energy loss through food chain; cas.bellarmine.edu/.../OCX/FoodChain/flow04.gif

 

PP SLIDE #25 - Gatun Lake, Panama; 209.15.138.224/inmopanama/lake_atun.htm

& http://www.panamafishingandcatching.com/gatun/Gatun_Lake.jpg

 

PP SLIDE #26 - Cichla ocellaris; search Google Images for several sites that show this animal.

 

PP SLIDE #27 - See figure 5.26, page 163 in textbook.

 

PP SLIDE #28 - see figure 5.27, page 168 in textbook.