L3
讲座
1. What is the lecture mainly about?
The use of technology in the analysis of ecosystems
The development of the field of ecology
Fieldwork methods in ecology
Early theories about ecological change
2. According to the professor, why was Linnaeus’ theory of ecology from the 1700s
NOT generally accepted by scientists?
It was based on the study of only one ecosystem.
It did not describe nature as a complex system.
It tried to account for too many variables.
It was not based on numerical data.
3. Why does the professor tell the story about Thoreau’s notes?
To show how Thoreau’s early views about nature were different than his later views
To imply that Thoreau received formal training in the sciences
To identify the origin of the term “ecosystem”
To show how Thoreau’s work has contributed to ecological research
4. According to the professor,what was the significance of Frederic Clements’ work?
It gave researchers a quantitative tool to use in studying the environment.
It showed how farming methods could be improved to protect the environment.
It established which variables within an ecosystem are the most important to study.
It pioneered the use of computers to analyze data about the environment.
5. Why does the professor mention chemistry?
To help explain the historical origins of ecology
To contrast two different approaches for studying ecosystems
To emphasize a limitation involved in studying ecology
To point out an advance that improved scientists’ understanding of ecosystems
6. What does the professor say about the use of quadrats in environmental studies?
They have not been used since satellite technology became available.
They provide a means for standardizing some types of environmental observations.
They are more effective for counting animal populations than for counting plants.
They can slow the spread of plant species from one area to another.
