Endangered Species | Biology for GCSE/IGCSE - Year 11 PDF Download

Conservation for Endangered Species

• There are several reasons why a species can become endangered.
• The population of the species may fall below a critical level due to hunting, climate change, pollution, loss of habitat, or the introduction of non-native species that outcompete native species.
  • Hunting: Hunting poses a significant threat to wildlife populations, leading to a decline in various species.
  • Climate Change: The altering climate patterns have a profound impact on ecosystems, affecting the survival of many species.
  • Pollution: Contamination of natural habitats by pollutants endangers wildlife through various means such as water and air pollution.
  • Loss of Habitat: Destruction and fragmentation of habitats diminish the living space of wildlife, pushing many species towards extinction.
  • Introduction of Non-Native Species: When non-native species are introduced, they can outcompete native species, disrupting the natural balance of ecosystems.

Reducing Extinction Rates and Protecting Ecosystems

• One crucial objective in conservation is to decrease the extinction rates of plant and animal species.
• It is essential to minimize harm to food chains and webs while safeguarding fragile ecosystems like rainforests.
• Another critical aspect is to safeguard our future food sources and ensure the continuity of nutrient cycles that support life. Additionally, preserving biodiversity could lead to the discovery of new medical treatments and alternative fuel sources.

Examples:

• Reducing Extinction Rates: By implementing measures such as habitat protection and anti-poaching laws, we can prevent the loss of endangered species like the black rhinoceros.
• Protecting Vulnerable Ecosystems: Conservation efforts in the Amazon rainforest not only preserve diverse flora and fauna but also support indigenous communities who rely on the forest for their livelihood.
• Preserving Future Food Supply: Conserving pollinator species like bees is vital for crop pollination, ensuring food security for the growing global population.
• Maintaining Nutrient Cycles: Wetland conservation helps filter pollutants from water, ensuring clean water sources for human consumption and supporting aquatic biodiversity.