Chapter 5 Chapter 5 Lesson One: Lesson One:

Interactions in Interactions in an Ecosysteman Ecosystem

EcosystemEcosystemAll the living and All the living and

nonliving things in an nonliving things in an environment, environment, including their including their

interactions with each interactions with each otherother

Abiotic FactorAbiotic Factor

A nonliving part of A nonliving part of an ecosysteman ecosystem

Examples:Examples: water, minerals, sunlight, water, minerals, sunlight, air, climate, and soilair, climate, and soil

Biotic FactorsBiotic Factors

A living part of an A living part of an ecosystemecosystem

Examples:Examples: animals, plants, fungi, animals, plants, fungi,

protists, and bacteriaprotists, and bacteria

PopulationPopulation

All the members of All the members of oneone species in an species in an

areaarea

CommunityCommunity

All the living things All the living things in an ecosystemin an ecosystem

(All the populations (All the populations together)together)

EcologyEcology

The study of how The study of how living and nonliving living and nonliving

things interact things interact

HabitatHabitat

The place where a The place where a plant or animal plant or animal

naturally lives and naturally lives and growsgrows

NicheNiche

The role of an The role of an organism in a organism in a community community

Living Things are Living Things are made up of 50 to made up of 50 to 95 percent water.95 percent water.

ProducersProducers

Examples: Examples: Plants and algaePlants and algae

Definition: Definition: They produce They produce oxygen and food that oxygen and food that animals need animals need

ConsumersConsumersExample: Example: AnimalsAnimals

Definition: Definition: They eat algae, They eat algae, plants, or animals. plants, or animals.

DecomposersDecomposers

Examples: Examples: Fungi and bacteriaFungi and bacteria

Definition: Definition: They breakdown They breakdown dead plants and animals into dead plants and animals into useful things like minerals useful things like minerals that enrich soil.that enrich soil.

NicheNicheFactors: Factors:

a.a. What a species eatsWhat a species eats

b. What eats a speciesb. What eats a species

c. The environment the species c. The environment the species lives inlives in

d. Are they active during the d. Are they active during the day or at nightday or at night