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Conservation
A sustainable resource is one that is replenished at the same rate it is extracted from the environment, ensuring it does not deplete.
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90 min
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CambridgeIGCSEBiologyHuman influences on ecosystems
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Conservation outcomes9 objectives
- A sustainable resource is one that is replenished at the same rate it is extracted from the environment, ensuring it does not deplete.
- Some resources can be preserved and managed in a sustainable manner, specifically forests and fish populations.
- Organisms may become endangered or extinct due to factors such as climate change, habitat loss, hunting, overexploitation, pollution, and the introduction of non-native species.
- Methods to conserve endangered species include monitoring and protecting their habitats, education initiatives, captive breeding programs, and the establishment of seed banks.
- Forests can be preserved through strategies such as education, the creation of protected areas, implementing quotas, and replanting efforts.
- Fish populations can be conserved by employing education, establishing closed seasons, creating protected areas, using specific types of nets and mesh sizes, setting quotas, and conducting monitoring.
- Conservation programs are important for reasons such as maintaining or enhancing biodiversity, preventing extinction, protecting at-risk ecosystems, and ensuring the functions of ecosystems, including nutrient cycling and the provision of resources like food, medicine, fuel, and genetic material.
- Artificial insemination (AI) and in vitro fertilization (IVF) are techniques used in captive breeding programs to help conserve species.
- A decline in population size can pose risks to a species by decreasing genetic diversity, which can affect its survival and adaptability.
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