Biology Ecosystem Part 1
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Transcript of Biology Ecosystem Part 1
1
Energy Flow Through An Ecosystem
Part 1
Ecosystem
A community and its physical environment treated together as a functional system or A biological community together with abiotic environment,
characterized by the flow of energy and the cycling of inorganic nutrients
Biotic organisms:Living organisms, including animals, plants, fungi, bacteria, viruses etc.
Abiotic components
Non-living things in the environment e.g. light, gasses (air), water, soil, temperature.
Ecosystem Types?
Micro
Macro
NOT Makro
Types of Energy:All organisms require energy…
Solar energy
Mechanical energy (+gravitational energy, etc.)
Chemical energy = energy stored inmolecular
bonds
ALL BEGINS WITH THE SUN!
The chemical reaction by which green plants use water and carbon dioxide and light from the sun to make glucose
ENERGY is stored in glucose; glucose is stored as starch
Organisms that can make glucose during photosynthesis are called: PRODUCERS
(Autotrophs)
Producers use cellular respiration to supply the energy they need to live
CELLULAR RESPIRATION is the chemical reaction that releases
the energy in glucose. 6O2 + C6H12O6 --> 6H2O + 6CO2 +
energy
Organisms that cannot make their own energy are called Heterotrophs.
Erwinia Carotovora Carcharodon carcharias
Two Types of Heterotrophs Decomposers and Consumers
Heterotrophs-Consumers / Decomposers Decomposers utilize complex compounds in dead
protoplasm.
Bacteria and fungi are the main groups of decomposers.
Bacteria are the main feeders on animal material.
Fungi feed primarily on plants, although bacteria also are important in some plant decomposition processes.
References: Mrs Williamson- Slide show Ecosystems Chapter 52 – Campbell and Reece, 2011 Mr Swart slide show Edenvale High http://www.slideshare.net/medgar9/honors-biolog
y-ecosystems-1011?qid=d55c21a4-f6ee-4697-9966-26aeaf386554&v=qf1&b=&from_search=4
http://www.slideshare.net/medgar9/biology-ecosystems-and-communities-1112?qid=d55c21a4-f6ee-4697-9966-26aeaf386554&v=qf1&b=&from_search=2
http://www.slideshare.net/biologyteacher60/chapter-2-biology?qid=d55c21a4-f6ee-4697-9966-26aeaf386554&v=qf1&b=&from_search=9
Reference list pictures: http://
xaxor.com/photography/27544-animals-in-nature-beautiful-photos.html
http://www.forwallpaper.com/wallpaper/virus-bacteria-636760.html
http://www.showziji.com/alps-mountains-hd-wallpaper/awesome-french-alps-snow-mountain-hd-wallpaper-2048x1152/
http://www.pinterest.com/pin/275282595946891764/ Mr Swart slide show Edenvale High Mrs Williamson- Slide show Ecosystems