Ecosystem Producers and Consumers

Midterm Urban Ecology Fall 2019
1 What are the barriers that limit the distributions of plants and animals?
Climatic factors – temperature, salinity, and humidity.
Soil pH and coarseness.
Geology.
Water availability.
2 Why did initial attempts to plant trees in the Great Plains in the 1930s fail?
Public participation was poor and the rains had failed.
3 Why does the range of the brown pelican end north of Brazil?
4 Give another example of an isolating mechanism that keeps closely related species from interbreeding?
5 Are native insects more likely to eat native plant species or non-native plant species?
They are likely to eat native plant species.
6 What did E O Wilson call insects? Why?
7 Why was 10th Avenue known as "Death Avenue"?
Because many people died on 10th Avenue because of the freight trains.
8 What are the six modes of seed dispersal?
Gravity
Wind
Ballistic or Air
Animals
Water
Fur and feathers
9 What was the steady supply of food that helped sustain house sparrows when they were released in the 19th Century?
10 What...