Chapter+5+Questions

1a. One example of competition on New Zealand is between a bird called the Moa, which is a huge bird that lived on the island and animals such as the deer and antelope. Because of lack of predators on the island at that time the bird was flightless. 1b. Recently, a new parasite has been found in New Zealand. It is an exotic pest called the Nosema ceranae which in infests the middle of a beehive and kills the bees. It is well-established and widespread. There have been many tests but so far it is unknown how they got here or how long they have been there. 1c. An example of commensalism in New Zealand is the birds and ants. As the ants are together in 'raids' they stir up insects that fly up to eat the ants and the birds eat those insects. The birds help the ants being protected and the ants help the birds get food. 1d. An example of predator-prey relationships in New Zealand is a cat and the birds. The country is largely populated by birds and so the cats and other large mammals have a wide variety of prey to feed on. 1e. An example of mutualism is a bee and a flower. The bee pollinates the flower so the bee can make honey and the flower can then reproduce.

2a. The moa bird lives in populations 2b. The parasites live in clumps 2c. The birds live in populations 2d. The cats live in populations 2e. The bee lives in clumps

3. Two examples of K-selected species are the kiwi in new zealand as well as the Silver Fern. Two examples of R-selected Species are rats and New Zealand cicadas. Both the kiwi and the Silver Fern are slow to repopulate and it takes a long time for them to fully grow. The rats and cicadas on the other hand grow quickly and reproduce very quickly as well. They also have multiple offspring in one pregnancy.

4. New Zealands north island faces primary succession after the three active volcanoes have erupted multiple times. Known as the 'ring of fire' the three volcanoes have erupted more than 70 times since European settlement. Ancient craters still line the country all the way to the sub-antarctic islands.

5. I believe that the stability of New Zealands ecosystem is due to resilience. The country has survived many volcanic eruptions from their three valcanoes and continue to come back and thrive. They have a very rich biodiversity and their country has a very successful tourist business, and wouldn't have that if it weren't for the fact that there are so many things that people can see. They have many different species of birds that have evolved into birds of flight since other mammals were introduced into the country.