1-Intro to Ecology

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Questions and Answers

What is the main characteristic of Odontomachus bauri that distinguishes it in the animal kingdom?

  • Its social structure within colonies
  • Its dietary habits as a predator
  • Its high-speed jaw strike of 145 mph (correct)
  • Its ability to change colors for camouflage

What does the term 'exaptation' refer to in evolutionary biology?

  • The extinction of a species due to environmental changes
  • The process of natural selection favoring traits
  • An adaptation that serves a new function (correct)
  • A genetic mutation that leads to new species

How is ecology best defined?

  • The scientific study of the interactions between organisms and their surroundings (correct)
  • The study of animal behavior in isolated environments
  • The analysis of genetic variations among species
  • The research of human impact on biodiversity

Which of the following aspects is NOT a level of organization in ecological systems?

<p>Species variability (A)</p> Signup and view all the answers

What is an example of how ecological interactions can affect evolutionary processes?

<p>Predation pressure leading to camouflage in prey (C)</p> Signup and view all the answers

Which of the following is considered an abiotic component in an environment?

<p>Light (B)</p> Signup and view all the answers

What is the primary influence of biotic components on their abiotic environment?

<p>They modify the chemical composition. (B)</p> Signup and view all the answers

How do individual differences in tolerance affect survival and reproduction?

<p>They determine the habitat preferences of individuals. (C)</p> Signup and view all the answers

What type of questions do ecologists generally ask?

<p>What happens if we lose biodiversity? (C)</p> Signup and view all the answers

Which scale is NOT typically used in ecological studies?

<p>Climate Zone (B)</p> Signup and view all the answers

Applying the scientific method in ecology can help answer which of the following questions?

<p>What will happen to East African savannas with large mammal extinctions? (D)</p> Signup and view all the answers

Which statement accurately summarizes the results of the experiment regarding animal extinction?

<p>Big and medium-sized animals went extinct. (B)</p> Signup and view all the answers

What impact do large body sizes and high bite forces have on species in an ecosystem?

<p>They can dramatically influence the survival of species. (D)</p> Signup and view all the answers

Which of the following are NOT considered abiotic factors influencing organism survival?

<p>Predation (A)</p> Signup and view all the answers

What is the significance of the phrase 'NO ELEPHANTS' in the experiment?

<p>It indicates a total exclusion of elephants from the study. (B)</p> Signup and view all the answers

Which experimental condition involved no elephants?

<p>Total Exclusion (D)</p> Signup and view all the answers

What percentage of extinction was implied in the experiment results presented?

<p>70% (C)</p> Signup and view all the answers

Which type of animal experienced the most impact from the experimental conditions?

<p>Big animals (D)</p> Signup and view all the answers

What does the upcoming exam on December 4th cover?

<p>Lectures, readings related to class materials, and online materials (C)</p> Signup and view all the answers

What is one of the suggested methods for students to improve their understanding in class?

<p>Talk to your TA about your grades and study with successful peers (B)</p> Signup and view all the answers

Which chapter is dedicated to the introduction to ecology?

<p>Chapter 38 (B)</p> Signup and view all the answers

What are students encouraged to do with their notes as a method of active learning?

<p>Re-write their notes in different ways (B)</p> Signup and view all the answers

Which of the following is NOT a component of 'Your job in this class'?

<p>Avoid making mistakes (D)</p> Signup and view all the answers

Which of the following topics is included in today's itinerary?

<p>Ecology in the news: Fastest jaws in the animal kingdom (A)</p> Signup and view all the answers

Which chapter focuses on community ecology?

<p>Chapter 40-41 (C)</p> Signup and view all the answers

What is emphasized about the structure of the course materials?

<p>Lecture outlines and materials will be posted before class (C)</p> Signup and view all the answers

Flashcards

Ecology Exam Date

The exam is scheduled for Wednesday, December 4th.

Exam Scope

The exam covers lectures, assigned readings, and online materials.

Ecology Topics

The topics include Intro to ecology, climate, biomes, population ecology, community ecology, and ecosystem ecology.

Student Responsibilities

Students should attend class, read assigned texts, ask questions, learn actively, and actively seek assistance from teaching assistants.

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Course Logistics

Lecture outlines, PDFs, and PowerPoint slides are provided before each class.

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Seek Help Now

If struggling, talk to the online teaching assistant (TA) and/or study with successful students immediately.

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Lecture Structure

Each day's lecture includes ecology news, daily learning objectives, practice questions, and the lecture itself.

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Course Goal

The goal is for students to learn about ecology, participate in lessons, ask questions, and actively engage in the process of learning.

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Ecology definition

Ecology is the scientific study how organisms interact with their environment.

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Odontomachus bauri

A Central- and South-American ant with extremely fast jaws.

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Exaptation

An adaptation that now has a different function from its original purpose.

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Ecological interactions

How organisms affect each other in their surroundings.

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"Trap-jaw" ant

A very fast moving ant with a unique jaw mechanism.

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Abiotic component

Non-living parts of an environment, like temperature, light, water, and wind.

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Biotic component

Living organisms in an environment (plants, animals, etc.).

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Scale of ecological study

Different levels of focus in studying nature - from individual organisms to the entire biosphere.

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Organism

A single living thing.

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Population

A group of the same species living in the same area.

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Community

All different species living and interacting in a particular area.

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Scientific method

A systematic approach to studying nature (observation, question, hypothesis, experiment, results, conclusion).

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Extinction Experiment

A study designed to understand the effects of large animal extinctions on ecosystems. It involved removing different groups of animals from a simulated savanna environment and observing the changes in plant life and other smaller animals.

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Total Exclusion Treatment

In the extinction experiment, this involved completely removing all large and medium-sized animals from the simulated savanna environment. This simulates a scenario where large animal extinction has drastically altered the ecosystem.

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Meso Treatment

In the extinction experiment, this involved removing only the largest mammals and allowing medium-sized animals to remain. This represents a more gradual extinction scenario.

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No Elephants Treatment

In the extinction experiment, this treatment only removed elephants, leaving other large and medium-sized animals present. It focuses specifically on the effects of elephant extinction on the environment.

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Open Treatment

In the extinction experiment, this served as the control group. It included all animals, allowing for comparisons to understand the effects of removing different groups.

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Study Notes

Ecology Course Information

  • Professor: Dr. Todd Palmer
  • Office: 411 Carr Hall
  • Office hours: Monday, 12:50-1:40 pm; Wednesday, 12:50-1:40 pm

Exam Information

  • Exam: Wednesday, December 4th
  • Exam 3 is not cumulative for all sections

Logistics

  • Exam will cover: lectures, readings related to in-class material, and online materials
  • Lecture outlines, PDFs, and PowerPoint slides are available before class

Questions for Students

  • "Who are you people?"
  • "How's class going?"

Trouble Shooting

  • Talk to the online Teaching Assistant (TA) about your grades
  • Study with students who are doing well
  • Actively learn by reading text and notes, re-writing them, and asking questions

Daily Itinerary

  • Includes: Ecology news, outline of daily topics and objectives (posted online), practice questions, and points to ponder for each lecture

Topics for the Course

  • Introduction to ecology (climate, biomes)
  • Population ecology
  • Community ecology
  • Ecosystem ecology
  • Biomes

News of the Day

  • Fastest jaws in the animal kingdom (Odontomachus bauri)
  • Example of "exaptation"

Learning Objectives

  • Define "ecology"
  • Give examples of how ecological interactions affect evolutionary processes
  • Describe different levels of organization in ecological systems
  • Describe the steps of the scientific method

What is Ecology?

  • The scientific study of the interactions between organisms and their environment.
  • Includes two components:
    • Abiotic: Non-living factors (chemical & physical factors) that affect organism survival and reproduction. (Examples include temperature, light, and water.)
    • Biotic: Living organisms that influence species survival and reproduction, and can also affect the abiotic environment.

Ecological Interactions

  • How these interactions influence evolutionary processes (e.g., large body size and high bite force)

Types of Questions Ecologists Ask

  • What happens if biodiversity is lost?
  • What happens to African savannas when large animals are lost?

Scales of Ecological Organization

  • Organism, population, community, ecosystem, biosphere. These describe where and how ecological interactions operate.

How Ecologists Study Nature

  • Apply the scientific method (observation, question, hypothesis, analysis, conclusion)

Experiments

  • Experiments on the impact of large animal extinctions on East African savannas described; including a satellite image of experimental areas.

Other

  • Learning Catalytics questions will be available up to Friday at midnight.

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