Historical Aspects of ECOLOGY

SC 225Tue 7:30am – 10:30am

Historical Aspects of

ECOLOGY

Dr. Orbella Laureano

Let’s us Pray

Motivation

Video Presentation

Joelbyn Datu

TheophrastusHe was described the interrelation

between organisms and

their environment .1866 - Ernst Haeckel a German

Zoologist coined the word “ OECOLOGIE” for this relationship.

Early man as HunterThey knew how to make use of

his environment

They developed a detailed knowledge of where to find food and water since his very survival

depended on this.

Due to nomadic ways they would stay in one place and use up the

food and water that could be found there as soon as he

exhausted these resources they would move on to another place

and repeat the same cycle.

Man Changed from nomad to settle

They learned how to weave make pots and manufacture tools.

Man learned to domesticate plants and animals

They learned to shape his environment to fit his need as a result of this learn to cut down

trees and burned forests and this in turn caused soil erosion and

rampant flooding

The Rise of Agriculture He was able to cultivate larger

areas Man planted the same crops

years after year. They know how to fertile the

soil by treating the land with organic matter such as chicken

or cow dung

In the PhilippinesNumerous areas of virgin forest

and land have been denuded under the guise of economic and

cultural development.Infrastructure which aims to enhance the economic and

cultural life of the people have been constructed at the expense

of the environment.

Save Paper to Save Forests

Sheree Ann Marie Casin

Ecology Prior to the Seventeenth Century

Ecological knowledge began with the development of biology

and medicine as scientific disciplines

AristotleThe father of

Biology Classified animals according to their habitats and habits

theophrastus

Systematically studied plant types

and forms in relations to

altitude, moisture and light exposure.

Hippocrates

The father of medicine

emphasized environmental

factors in his “On Airs, water and

Places.

Illustrates the dependence of seed Germination on the soil shows that the

early Hebrews had ecological awareness.

Parable of the Sower

12th Century

Albertus Magnus

A naturalist devoted his work

on plants and their environment

Late 16th Sentury

Robert boyle

Known as the first Modern chemist

related chemistry to vital processes

in plant and animals of low air pressure on various

animal

17th Century -

19th Century

Certain fields of study contributed to the development of ecology as an independent

discipline in the twentieth century.

Precelma Galve

ECOLOGY its Relevance

and Relationships

with other fields

Why do we need to study

Ecology

Studying ecology makes us aware of the problems.

It gives us information about the effects of fertilizers and pesticides on our health and

the ecosystems effects of detergent on bodies of water as well as the dangers and

risks of exposure to radiation.

Make us understand the Greenhouse effect, ozone

depletion and Red tide poisoning.

it impresses on us the impact the growing population

has on our natural resources.

Margielyn Aniñon

Laws of ecology

Application to humans society

Everything is connected to everything

else.

The food chain and food web have always been used to illustrate the

relationship of the different

living components of the ecosystem.

There is strength and ability in the

unity of differences

The ecosystem

has different components, and each is needed for

the ecosystem to

function

Consumption must not exceed

production

Any ecosystem has the capacity to sustain life. This is called its carrying capacity. For an ecosystem to exist, ability to provide for the necessities of life (Carrying capacity) should not be exceed by consumption. In this way homeostasis or balance of future is maintained.

Leslie Padua

Concept of Natural Resources

PHYSICAL ELMENTS OF THE EARTH Weather and Climate Landforms Oceans

Natural Resources

Natural Resources are the material things of economics value such as

water, soil, forests, fisheries, mineral, climate,

topography, geographic locations

NORTON GINSBURG

According to Norton Ginsburg include all the freely given

material phenomena of nature within the zone of man’s

activities plus the additional non- material quality of

situation or location.

Landis synonymous with natural

resources.Is a collection of several items. Its include location size, shape and everything found below on the

surface and above it.

Natural Resources

embrace the whole physical of base in geographic study.