Introduction to Ecology: ‘Decade of Discovery’

Article from BBC.co.ukworld news website From: Oct. 4, 2010

A new plant species, Aeschynanthus Mendumiae, discovered on the southeastern slopes of Laos' Phuo Yang Mountain, is one of 1,068 new species identified in the Greater Mekong from 1997 to 2007 in the WWF report, "First Contact in the Greater Mekong."

Read more: http://www.cbsnews.com/2300-500142_162-4668710.html#ixzz11fwtSLWh

The Dragon millipede Desmoxytes purpurosea, from Lansak district Uthaithani Province, Thailand. This formidable-looking creature sees off predators first with its spiny bright-pink skin and second with glands that produce cyanide.

Read more: http://www.cbsnews.com/2300-500142_162-4668710-2.html?tag=page#ixzz11fxEQ8Cf

In Cambodia, a new species of rhacophorid frog, Chiromantis samkosensis, was identified in 2007. It is distinguished from other species of Asian Chiromantis by having green blood and turquoise bones

Read more: http://www.cbsnews.com/2300-500142_162-4668710-5.html?tag=page#ixzz11fxWUi2w

• Ecology is the study of the relationships between the natural world and all the living and non-living things in that environment

Levels of organization in Ecology

• Biosphere• Ecosystem• Community• Population• Individual

(species)

SPECIES

• Similar organisms that can successfully reproduce among themselves in their natural environment– THIS MEANS: they

produce offspring that can reproduce as well

Examples: Species of frog: water frog, red-eyed tree frog

• Species of horse: Clydesdale horses, Andalusian horses

POPULATION

• A population is made of many of the SAME KIND of species that live in the same area– Compete with each other for food, mates, water and space

Examples• Population of trout in a river• Population of bats living in a cave• Population of GI students in the

classroom

COMMUNITY

• A community is made of many groups of populations that interact in an area

Examples:• A forest: populations of trees,

populations of mushrooms, populations of birds

• A lake: populations of insects, populations of fish, populations of algae

ECOSYSTEM• An ecosystem includes all

the living organisms in an area and all the non- living things that affect it

Examples:• Forest ecosystem

includes grass, soil, wind, sunlight, animals

• Ocean ecosystem includes fish, coral, rocks at the bottom, temperature of water

BIOSPHERE

• The part of the Earth that supports all organisms, made up of all of the Earth’s ecosystems

Examples:• Made up of the water,

land, living things and air

Levels of Organization

Biosphere

Ecosystem

Community

Population

Species

Science Journal

• SJ: Why do you think the ecological model (in the note today) is a picture of circles within circles?