The connection between organisms in nature Water Nitrogen

The connection between organisms in nature

- Water Nitrogen Phosphorous Mineral Nutrients Carbon (to be discussed later) What are we missing?

Looking at the image of a delicious turkey dinner, think about where everything has come from and how energy has flowed. - Where did the carrots come from? - How did the beans grow? - What made the bread? - What fed the turkey? - Why are you eating it? !

The flow of matter (nutrients) and energy in an ecosystem is the result of predator-prey relationships. These relationships establish a long chain of events. They always begin with a producer and end with consumers. Consider the food chain above, in your notes indicate the: a) Producer e) Quaternary (4 th) consumer b) Primary (1 st) consumer f) herbivore c) Secondary (2 nd) consumer g) carnivore d) Tertiary (3 rd) consumer

The SUN!!!!

§ What happens when multiple food chains become interconnected within an ecosystem? § a food web is created! Using the image provided, answer the questions in your notes.

Its time for an activity!

§ Why was there less and less “energy” from one bucket, or trophic level, to the next in our activity? § How is this energy lost? § Where does it go?

At each level in this any food chain, ENERGY is lost. Approximately 90% of the energy consumed by each trophic level and only 10% in passed onto the next. In this case, the 90% of the caterpillar’s energy is used in its day-to-day metabolism, and only 10% can be passed on to the bird who eats it. Energy: 1000 KJ 100 KJ 900 KJ LOST 10 KJ 90 KJ LOST