Question

gorongosa national park food webs and energy pyramids creating a food web food chains are simple models that show only a single set of energy transfer relationships. in nature, most organisms get food energy from many different sources at lower trophic levels. species then provide energy to several higher level consumers in turn. a food web illustrates these more complex interactions and is a more accurate model of how energy moves through an ecological community. 1. start with the organisms in the food chain you made originally. then select 1 more producer and 4 more consumer cards. you may change these cards later if you need to. 2. construct a food web that shows how energy flows through the ecosystem they share. □ label each species indicating their trophic level/s. □ in a food web you can have more than one arrow leading to and from each organism. does your web show all possible relationships? □ make sure your food web model is neat and legible. 3. discuss with your partner any patterns that you notice in the relationships between organisms in different trophic levels. write 1 - 2 sentences describing the patterns you noticed. 4. do any organisms occupy more than one trophic level? discuss with your partner whether this is possible and explain your reasoning citing examples in 1 - 2 sentences.

Explanation:

1. For constructing a food - web: Select the required producer and consumer cards. Then, draw arrows to represent the flow of energy from one organism to another. Label each species with its trophic level (e.g., primary producer, primary consumer, secondary consumer, etc.). Check if all possible feeding relationships are shown.
2. Patterns in trophic - level relationships: Generally, energy decreases as we move up the trophic levels. Producers form the base, supporting a larger number of primary consumers, which in turn support fewer secondary consumers, and so on.
3. Organisms in multiple trophic levels: Yes, some organisms can occupy more than one trophic level. For example, humans can be primary consumers when eating plants and secondary consumers when eating meat.

Answer:

1. Follow the steps described above to construct the food - web.
2. Energy decreases with increasing trophic levels; lower levels support higher levels.
3. Yes, e.g., humans can be primary and secondary consumers.