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Ecosystems Ecosystems

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Ecosystems Ecosystems Presentation Ecosystems Ecosystems What is an ecosystem? An ecosystem includes all of the living and non-living things in a particular place. An ecosystem is made up of two parts, the biotope and the biocoenosis. Ecosystems biotope biocoenosis It includes all of the non-living It includes all the living things in things in an ecosystem. an ecosystem. Ecosystems What kind of relationships are there in an ecosystem? Intraspecific relationship: Interspecific relationship: exist between individual exist between individual members of the same species members of different species. Trophic relationships What are trophic relationships? Trophic relationships exist between the organisms that eat and the organisms that are eaten. A food chain shows the trophic relationships between organisms that live in the same ecosystem. A food web shows all the different food chains in an ecosystem. Trophic relationships How do we classify living things according to their trophic relationships? Plants are producers: they make their own food. Caterpillar are herbivores. They are primary consumers Praying mantis are carnivores. They are secondary consumers. Owls are carnivore. They are tertiary consumers, they feed on secondary consumers. Fungi and bacteria are decomposers: they break down the remains of dead organisms. The classification of ecosystems How do we classify ecosystems? A natural ecosystem is an ecosystem where no human activity has altered the biotope. Natural ecosystems can be classified into: 1. Terrestrial ecosystems 2. Prairie or savannah ecosystems 3. Forest and woodlands ecosystems 4. Tropical rainforest ecosystem 5. Aquatic ecosystems The classification of ecosystems How do we classify ecosystems? Artificial ecosystems include cities, towns, villages and artificial aquatic ecosystems, such as reservoirs or garden An artificial ecosystem is an ponds. ecosystem where human activity has altered the biotope. The biosphere What is the biosphere? The biosphere is all of the ecosystems of the Earth. It includes oceans, the land, the atmosphere and all the living things in the planet. The biosphere What is the habitat? The habitat is the place where a population lives. There can be many habitats in the same ecosystem. Habitats can be aquatic or terrestrial or a combination of both. The biosphere What is a biome? A biome is a group of ecosystems that share similar geographic and climatic conditions. Changes to ecosystems What causes natural changes? before a fire after a fire Natural changes in ecosystems are caused by variations in environmental conditions, such as seasonal changes or the natural development of ecological communities. Changes to ecosystems What consequences does human activity have? Human activities such as pollution, overfishing, forest fires and deforestation can destroy habitats or entire ecosystems. This destruction can lead to the extinction of many species. Changes to ecosystems What is sustainable development? It is the positive use of the resources that the Earth provide us to keep environment from being destroyed. Changes to ecosystems What is sustainable development? It is the positive use of the resources that the Earth provide us to keep environment from being destroyed. We can help to protect the environment by saving water, saving energy, recycling or respecting nature..
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