Population Ecology: The Texas Mosquito Mystery - Crash Course Ecology #2

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En bref

Ajouté le

17 mars 2026

Matière et domaine

life-health · population-ecology

Niveaux scolaires

9e année (3e)–12e année (Terminale)

Type de page

Video

Mots-clés

crash course ecology hank green population ecology species texas mosquito west nile virus west nile outbreak dallas disease population individual density birth death dispersion change time population growth fecundity offspring limiting factor food temperature space mates carrying capacity habitat environment science study education learn teach ecologist exponential growth logistic growth ecosystem immigration emigration vlogbrothers

Introduction

Population ecology is the study of groups within a species that interact mostly with each other, and it examines how they live together in one geographic area to understand why these populations are different in one time and place than they are in another. How is that in any way useful to anyone ever? Hank uses the example of the West Nile virus outbreak in Texas to show you in this episode of Crash Course: Ecology.

Table of Contents

  1. Density & Dispersion 02:03
  2. Population Growth 03:07
  3. Limiting Factors 03:45
    a) Density Dependent 06:16
    b) Density Independent 07:11
  4. Exponential & Logistical Growth 08:04
  5. How to Calculate Growth Rate 09:33

References:
http://www.latimes.com/news/nation/nationnow/la-na-nn-west-nile-virus-20120817,0,2506584.story
http://www.dshs.state.tx.us/idcu/disease/arboviral/westnile/information/general/myths/
http://en.wikipedia.org/wiki/Mosquito
http://www.nature.com/scitable/knowledge/library/population-limiting-factors-17059572
Campbell Biology 9th ed.

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