Problems of Food Chain

Gladys Faith VillanuevaAubrey Gujol

The system that organisms live together is called an ecosystem and all

ecosystem requires energy to function.

Why is energy needed?

• Growth• Repair of cells and

tissues• Reproduction

• Movement • Chemical

production

Where does energy come from?

What is energy pyramid?

frog

insect

plants

What is food chain?

What is food chain?

What is food chain?

What is food chain?

What is food chain?

What is food chain?

What is food chain?

What is food chain?

• Food chain demonstrates the interconnectedness of all living things. The relationships between species are crucial to sustaining an ecosystem. Often the role of a particular species does not become apparent until that species is lost.

• A food chain is a group of living things that depend on one another for energy. Energy is passed along the food chain.

A food web is a more realistic way of looking at the relationships

of plants and animals in an environment. A food web

illustrates the interrelationships between several food chains or

pyramids.

CAUSES

INDUSTRIALIZATION

WATER POLLUTION

AIR POLLUTION

DEFORESTATION

mechanism

How does energy flow?

• Primary • Secondary• Tertiary

ProducerCarnivore Herbivore

Omnivore

Decomposer

EFFECTS

BIO-MAGNIFICATION The increasing concentration of a

substance, such as a toxic chemical, in the tissues of organisms at successively higher levels in a food chain

DESERTIFICATION

"the process of fertile land transforming into desert typically as a result of deforestation, drought or improper/inappropriate agriculture

IMPACTHuman activities affect the balance of food

chain.

Any change in one species will directly affect those who depend on that species.

The impact of climate change affects ecosystem

MITIGATION

A regional ecosystem approach offers a potentially enhanced system for crediting mitigation that can help ensure that regional conservation goals and objectives are accomplish.

• DEFENDERS OF WILDLIFE- a nonprofit organization devoted to the protection of all native wild animals and plants in their natural communities

• INTERNATIONAL CORAL REEF INITIATIVE - In 1994, Australia, the United States and six other

nations founded this organization. to encourage preservation of reefs endangered by pollution, overfishing and other causes. In the future, sanctuaries and international agreements will provide major means of conserving these ecosystems.

• THE INTERNATIONAL MARINE LIFE ALLIANCE- based in the Philippines, is convincing fishermen to catch fish in hand nets, rather than poison or dynamite reefs.

• THE GLOBAL CORAL REEF ALLIANCE- investigating diseases that are afflicting reefs through scientific research

• GREENPEACE INTERNATIONAL- has been active in conducting worldwide surveys of the deterioration of coral reefs.

• Congress of the PhilippinesEleventh Congress

July 30, 2001

REPUBLIC ACT NO. 9147•

AN ACT PROVIDING FOR THE CONSERVATION AND PROTECTION OF WILDLIFE RESOURCES AND THEIR HABITATS, APPROPRIATING FUNDS THEREFOR AND FOR OTHER PURPOSES

CONCLUSION and RECOMMENDATION

• The world environmental situation is likely to be further aggravated by the increasingly rapid, large scale global extinction of species. It occurred in the 20th century at a rate that was a thousand times higher than the average rate during the preceding 65 million years. This is likely to destabilize various ecosystems including agricultural systems.

In a slow extinction, various balancing mechanisms can develop. No one knows what will be the result of this extremely rapid extinction rate. What is known, for sure, is that the world ecological system has been kept in balance through a very complex and multifaceted interaction between a huge numbers of species

.This rapid extinction is therefore likely to precipitate collapses of ecosystems at a global scale. This is predicted to create large-scale agricultural problems, threatening food supplies to hundreds of millions of people. This ecological prediction does not take into consideration the effects of global warming which will further aggravate the situation.