Ecologist, Joseph Connell showed that when Balanus barnacles are removed from th

Question

Ecologist, Joseph Connell showed that when Balanus barnacles are removed from the intertidal zone. Chthamalus barnacles expanded their range to occupy the space formerly occupied by Balanus. -Which species is the better competitor? Why did you come to this conclusion? -What is the preferred habitat or resource zone for intertidal barnacles? -What do you predict would happen if Chthamalus was removed instead? How many trophic levels are in the terrestrial food web depicted? The aquatic? The majority of the energy is concentrated in the trophic level. Sea otters exhibit top down/bottom up (choose one) control on their communities. What is their impact on community diversity? What is species evenness? Species richness? Species diversity? Sea offers exhibit top down/bottom up (choose one) control on their communities. What is the relationship between species diversity and ecosystem function, stability, and resilience? What is the relationship between diversity and disease?

Explanation / Answer

1 . a) Balanus barnacles are the better competitor owing to the abundance in the upper intertidal zone. Following removal will eventually lead to the space occupation by other barnacles.

B) the preferred habitat for the intertidal barnacles is the coastal areas, as well as on the rocky shore.

C) if Cthlamus is removed, other species of barnacles will occupy the space as there are species of barnacles which occupy lower intertidal areas as well.

2. There are all three trophic levels in the terrestrial habitat as plants are the primary producers, birds and other lower mammals are the secondary producers and at last humans and other big birds are the tertiary producers.same trend follows in the aquatic habitat as well being algae and other microscopic animals are primary producers, arthropods and mollusks are the secondary producers and bigger fishes are the tertiary producer's.

The majority of the energy is concentrated in the primary producers as they are one who manufactures and accumulate energy.

3. Sea otters exhibit top down control on their communities. This effect will enhance the community structure by increasing the diversity of other species. Sea otters prey upon sea urchins which indirectly increases the kelp productivity.

4. Species eveness - it can be defined as, how community of organisms are close enough to each other's. Example, if there are 60 cats and 500 dogs the species eveness is way apart but if there are 60 cats and 65 dogs then we can say the species eveness is close.

Species richness - it is the number of different species living in an ecological community, or landscape or a habitat.

Species diversity - it is based on the both species eveness and species diversity.

5. Top down

6. Species diversity is the number of organisms living in a particular community. Species diversity will significantly affect ecosystem function as the organisms in that particular community will be depending on the presence of each other. Food web and food chain are well connected with the ecosystem and it's managed function. And a well managed ecosystem will be highly stable.

At times more diversity of organisms will lead to wiping out of whole population due to diseases. If the disease not is communicable then it will disorient the entire community and transmit to other organisms of the same community. The evening

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