Ecology 6,2

• Biologie
• Middelbare school
• vwo
• Leerjaar 3

Ecology 6,2 - Feeding relationships

Today

How wolves change rivers

What are the levels of ecology?

What is a food web?

What is a food chain?

Feeding relations

What examples are given of how wolves change the ecosystem?

How do wolves change rivers?

Assign a food web

Sloths

The sloth from Brazil hangs upside down in the trees of the rainforest for most of its life. It feeds on leaves and young buds. Once a week he descends to relieve himself in a hole. Among other things, dung beetles = mestkevers are attracted to this. Microscopic algae live in the sloth's coat, which gives it its green camouflage color. Between the hairs there are also small insects that live on the algae and hair lice that use the hair as food.

Bacteria and yeast live on the food waste in his intestines.

Use the bold organisms to construct a food web, take a picture and put it on the next slide

upload your food chain here

WHICH OF THESE TERMS CONTAIN BOTH BIOTIC AND ABIOTIC FACTORS.

1. COMMUNITY
2. POPULATION
3. ENVIRONMENT
4. ECOSYSTEM

How many different species does the rabbit eat according to this food web?

1. 1
2. 2
3. 3
4. 4

Why is it always producers that are at the start of a food chain / food web?

Why are decomposers important?

6,3 Cycles

In an ecosystem, every substance goes through it's own cycle.

Water cycle

Carbon cycle

Nitrogen cycle

Study figure 12 and 13 explain how water and carbon are moving through our biosphere

Evapotranspiration