Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.


Basic Biology Chapter 3/4 Ecology

No description

Liana Hennings

on 4 September 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Basic Biology Chapter 3/4 Ecology

Basic Biology
Chapter 3 & 4
Ecology Ecology = the scientific study of interactions among and between organisms and their environment, or surroundings. Levels of Organization (smallest to largest)
A species is a group of organisms that they can breed and produce fertile offspring; (they can have kids that can have kids) A biome is a group of ecosystems that have the same climate and similar dominant communities; ex: tundra, desert
The biosphere contains the combined portions of the planet in which all of life exists; land, air and water. A community is an group of different populations that live in an area
An ecosystem is a collection of all the organisms that live in a particular place and the nonliving, or physical environment Sunlight is the main energy source for life on earth. Energy Flow Producers/Autotrophs – plants, algae, and certain bacteria that can capture energy from sunlight or chemicals and use that energy to produce food Consumers/heterotrophs – organisms that rely on others as their food source and for energy
- herbivores = eat plants
- carnivores = eat animals - omnivores = eat plants and animals
- detritivores = eat dead remains
- decomposers = break down organic matter food chain – steps of energy transfers from producer to consumer
food web – complex interactions of energy transfer in an ecosystem
- 1st trophic level is made of producer, 2nd
herbivores, etc Unlike the one-way flow of energy, matter is recycled within and between ecosystems. Cycles of Matter Chapter 4
Ecosystems and Communities In the atmosphere, temperature, precipitation, and other environmental factors combine to produce weather and climate.
Weather is the day-to-day conditions
Climate is the average year-to-year conditions in a region The Greenhouse Effect - Carbon dioxide, methane, water vapor, and a few other atmospheric gases trap heat energy and maintain Earth’s temperature range.
greenhouse effect is the natural situation in which heat is retained by the layers of greenhouse gases Latitude- Earth is a sphere tilted on its axis and receives sunlight at different angles throughout the year.
Three main climate zones: polar, temperate and tropical
Heat is transferred around Earth by winds and ocean currents. Ecosystems are influenced by biological & physical factors.
biotic factors = biological influences
abiotic factors = physical, nonliving factors habitat = the area in which an organism lives; biotic and abiotic factors; an organism’s address competition – struggle for resources: water, nutrients, light, food, space
predation – predator catches and feeds off of prey Community interactions symbiosis – “living together” Ecological Succession = series of predictable changes that occurs in a community over time… lichens, mosses, grasses, trees and shrubs Major Biomes
Tropical rain forest – hot and wet year round
Tropical dry forest – warm year round; wet and dry season
Tropical savanna – warm with seasonal rainfall; frequent fires
Desert – low precipitation, can be hot or cold Temperate grassland – warm to hot summers, cold winters
Temperate woodland and shrubland – hot dry summers and cool moist winters
Temperate forest – look outside Northwestern coniferous forest – mild temperatures, lots of precipitation
Boreal forest – long, cold winters; short, mild summers
Tundra – long, cold and dark winters A population is a group of individuals of the same species that live in the same area <-- Possums Meerkats - photosynthesis –water and carbon dioxide →sugar and oxygen
- chemosynthesis – break chemical bonds to produce carbohydrates Make a list in the margin of you paper of different producers. tubeworms - chemosynthesis Make a list of what you see outside:
Abiotic Biotic niche = full range of physical and biological conditions and interactions; organism’s occupation - mutualism = both species benefit; flowers and
insects; ants and aphids - commensalism = one member benefits and
other is neither benefited or harmed; barnacles
and whales; orchids and trees - parasitism = parasite lives on or in a host which
generally weakens the host; tapeworms and
mammals; fees, ticks and mites and mammals
Full transcript