1 / 8

Population, Carrying Capacity, Limiting Factors, & Ecological footprint

Population, Carrying Capacity, Limiting Factors, & Ecological footprint. Key Definitions. Population is a summary of all the organisms of the same group or species, who live in the same geographical area, and have the capability of interbreeding Carrying capacity

fai
Télécharger la présentation

Population, Carrying Capacity, Limiting Factors, & Ecological footprint

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Population, Carrying Capacity, Limiting Factors, & Ecological footprint

  2. Key Definitions • Population • is a summary of all the organisms of the same group or species, who live in the same geographical area, and have the capability of interbreeding • Carrying capacity • The maximum population an environment can sustain • Limiting factors • Factors that limit the growth and development of a species or process

  3. Population • There are three important characteristics of population: geographic distribution, density, and growth rate. • These things will determine how successful your population will be.

  4. Population Increase http://www.youtube.com/watch?v=4BbkQiQyaYc Population Crisis https://www.youtube.com/watch?v=8q0uKxiw4Tk Population Growth → • The growth rate of a population depends on demographic transitions and age structure • Add to population: birth and moving into the area (immigration) • Reduce population: death and moving away from the area (emmigration) • Stable populations have an even spread of ages throughout the population • The human population is currently exponentially increasing in size, which is causing a higher demand of resources • Currently, third world and developing countries are adding the most members to the population

  5. Population Growth based on population changes from 2010-2015 Growing Africa Middle East Constant The US Europe South America Shrinking Japan Eastern Europe

  6. Carrying Capacity→ • A population cannot exceed the carrying capacity of an area due to limits in supplies. • The carrying capacity: • is tied to resource availability: food, land, water, and shelter • can vary from year to year. • If you exceed the carrying capacity of your environment you introduce problems such as disease

  7. Limiting Factors → • Populations are impacted by limiting factors • There are two types of limiting factors: 1. Density-independent factors • This factor is not influenced by population size • Unusual weather, natural disasters, seasonal cycles, and human activities 2. Density-dependent factors • This factor depends on the population size → have a greater impact when the ecosystem is densely populated • Types: Competition, Predation, Parasitism, Disease, and crowding

  8. Ecological footprint → • is a measure of the human demand on resources such as water, land, and food • Footprints vary from person to person and region to region • Areas that are industrialized like the US have a larger footprint than other areas because we have a higher demand of resources

More Related