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We hope you have enjoyed this limited-length demo
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1. Introduction to ecology
- Dr. Daniel B. Botkin
- Species Adaptations and their environment
- Population Ecology
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3. Darwin’s legacy: evolutionary interactions
- Prof. Vassiliki Betty Smocovitis
- Community Ecology
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4. Biogeography: explaining the geographical distribution of organisms
- Prof. Alexandre Antonelli
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5. Why is the world green? Top-down and bottom-up controls on ecosystems
- Prof. Jonathan Shurin
- Ecosystem Ecology
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6. Plant-soil feedbacks
- Dr. Ciska Veen
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7. Ecology of ecosystem services: a case study of riparian systems
- Dr. Isabel M. Rojas
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8. The concept of ecosystem services: contributions, pitfalls and alternatives
- Dr. Sharachchandra Lele
- Macroecology
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9. Macroecology
- Dr. Natalie Cooper
Printable Handouts
Navigable Slide Index
- Introduction
- What you will learn about ecology
- What you will also learn about ecology
- Saving Mono Lake, California
- Saving Mono Lake: what’s at stake
- Ecosystems have food webs: who eats whom
- Saving Mono Lake: also at stake (1)
- Saving Mono Lake: also at stake (2)
- Why Mono Lake became a public issue
- The policy issue
- Mono Lake
- More than an ecologist was needed to solve the Mono Lake problem:
- What our geologist found out
- First findings of the scientific team
- And what our science team concluded
- The results, based on the scientific, ecological, team’s recommendations
- Now we can turn to the basics of ecology
- Ecology is the science that seeks to understand how nature works and what our human role in nature is and could be
- Ecology and Ecosystems
- What must happen for life to sustain
- Life has to have a flow of energy
- As chemical elements cycle, there is some small loss, depending on the characteristics of the ecosystem
- An ecosystem consists of several species and a fluid medium---air, water, or both
- Keys to the role of scientists in environmental issue decision-making
- Living things in an ecosystem are said to form an ecological community
- A view of the wilderness of Isle Royale National Park
- Isle Royale is a wilderness a wonderful natural laboratory to study predators and prey
- Isle Royale food web
- Some food webs are complicated
- The moose and wolf populations have been counted for a long time
- Isle Royale moose and wolf population 1980–2019
- The decline of the wolves presented a difficult decision to the U.S. National Park Service
- Release of wolf on Isle Royale
- Ecologist Lynette Potvin on preparations
- Isle Royale
- Sometimes, ecologists learn things that can help us humans as well
- Biodiversity (1)
- Biodiversity (2)
- Biodiversity is valuable for long-term persistence of life
- Elephants have many competitors to eat vegetation
- Serengeti food web
- What have you learned about ecology?
- Thank you
Topics Covered
- The science of ecology
- Saving Mono Lake: an example of ecology to solve an environmental problem
- The basic concepts of ecology
- Predators and prey: saving the wolves and moose of Isle Royale National Parks
- Biodiversity and its advantages: examples from the African Serengeti
Talk Citation
Botkin, D.B. (2019, December 31). Introduction to ecology [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved October 8, 2024, from https://doi.org/10.69645/GAWI2966.Export Citation (RIS)
Publication History
Financial Disclosures
- There are no commercial/financial matters to disclose.
A selection of talks on Plant & Animal Sciences
Transcript
Please wait while the transcript is being prepared...
0:00
Hello, I'm Daniel Botkin and I'm going to introduce the science of ecology.
Ecology is the science about the relationship between living things,
including us people, and their environment.
I've been an environmental scientist,
we call ourselves ecologists, for many years.
I've been on the faculty of Yale University's School of Forestry and Environmental Studies
and chairman of the environmental studies program,
as well as a professor of biology at the University of California, Santa Barbara.
0:41
Here's a list of what I hope you will learn about ecology from my talk.
First, ecology, as I just said,
is the science about how nature works and where people and all living creatures fit in.
For life to continue,
there must be a cycling of chemical elements and a flow of energy.
The ecosystem is the term that refers to
the basic system that supports life and allows it to persist.
Ecosystems are necessary for chemical cycling and the flow-through of energy.
An ecosystem has a physical medium,
air or water or both,
and the variety of species that allow
chemical cycling and recycling and the flow of energy.
Another term that I hope you'll remember is biodiversity.
That's the number species in any one place at any one time.
High biodiversity is valuable for the long-term persistence of life,
especially as the environment changes.