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Presented by Sam

Impact of Population Growth on Biodiversity

Ecosystems

Ecosystems

Human activity can influence the biodiversity in an ecosystem. Certain damaging things that the human population does can contaminate the standard of biodiversity today.

Population growth

Farming

Impact of the increasing human population

HUMAN POPULATION RISING

Population Growth

Humans can adapt to the change and rate of agriculture very well however animals aren't as susceptible to change. Over the last 500 years, the years where agriculture developed the most, many animals were affected because of the population boom.

Population Growth

Graph

The human population is increasing every year. This is because the birth rate is higher than the death rate therefore increasing the population greatly. The population of humans on the planet has increased from 3 billion to 7 billion people in the last 50 years . The human population is predicted to reach around 10 billion by 2050.

Farming

As the population increases, the need for more resources increase to feed the growing population.To feed the growing population, intensive farming methods such as the application of chemical fertilisers and the widespread use of pesticides can be put into action. This can increase the quantity of food produced but also has a huge carbon foot print.

Human influence

There are many aspects of our lifestyle that influence biodiversity

Pollution

Pollution

Pollution affects bodiversity by destroying habitats and affecting the ecosystem.

Credits to the Australian academy of science

Sewage

sewage

Untreated sewage contaminates waters high in oxygen preventing any species that need a high oxygen concentration from living.

deforestion

deforestation

Deforestation promotes habitat loss, loss in soil fertility and soil structure. This results in the decrease of biodiversity. Desertification decreases biodiversity because it is the process of a fruitful land mutating to a deserted one.

Pesticides.

pesticides

Pesticides can have a large carbon footprint if they are not biodegradable and environmentally safe. This can also affect the food chain greatly as some organisms have more pesticides than others.

grazing

grazing

The biodiversity at low grazing grasslands is lower because some species dominate others. The statuses are constantly kept in check by predators of grass allowing the recessive grass species to grow at a faster rate therefore restoring its natural place.

Natural disasters

Natural Disasters

Natural disasters either decrease biodiversity by killing animals directly or by destroying their habitats so much that they are forced to die.

Conservation efforts are made by Zoos, wildlife reserves, breeding of captive animals, or passing of laws to limit hunting

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