18.3 A2 Level

Conservation

8 flashcards to master this topic

Key Concept Flip

Explain how climate change can lead to species extinction.

Answer Flip

Climate change alters habitats faster than species can adapt or migrate, leading to habitat loss and mismatches in species interactions.

Example: coral bleaching due to ocean acidification can devastate reef ecosystems, causing the extinction of dependent species.
Key Concept Flip

Outline four reasons why maintaining biodiversity is important.

Answer Flip

Biodiversity provides ecosystem services (

Example: pollination), genetic resources (. for medicine), economic benefits (. tourism), and aesthetic/ethical values. Loss of biodiversity can destabilize ecosystems and reduce resilience to environmental change.
Definition Flip

Describe the role of seed banks in conservation.

Answer Flip

Seed banks preserve genetic diversity by storing seeds of various plant species, particularly endangered ones, under controlled conditions. This provides a backup in case of extinction in the wild or allows for future reintroduction efforts.

Key Concept Flip

Outline two methods of assisted reproduction used to conserve endangered mammals.

Answer Flip

IVF involves fertilizing eggs in vitro and implanting embryos into surrogate mothers. Embryo transfer involves implanting embryos from a high-genetic-value female into a more common surrogate, increasing the reproduction rate of the endangered species.

Key Concept Flip

Explain why it's important to control invasive alien species.

Answer Flip

Invasive species can outcompete native species for resources, disrupt food webs, and transmit diseases, leading to population declines and extinctions. Controlling them helps maintain ecosystem integrity and biodiversity.

Definition Flip

What is the role of the International Union for Conservation of Nature (IUCN) in conservation?

Answer Flip

The IUCN assesses the conservation status of species worldwide (Red List), provides scientific information, and advocates for conservation policies. They support international cooperation and promote sustainable resource management.

Key Concept Flip

How can competition between species lead to extinction?

Answer Flip

If two species occupy the same niche, the more efficient competitor will outcompete the other, potentially driving it to extinction.

Example: the introduction of the grey squirrel in the UK has led to a decline in native red squirrel populations.
Definition Flip

Explain the role of CITES in species conservation.

Answer Flip

CITES (Convention on International Trade in Endangered Species) regulates international trade in endangered plants and animals to prevent overexploitation. It ensures that trade does not threaten the survival of species in the wild through permits and restrictions.

Ready to test yourself?

Practice with MCQ questions to check your understanding of Conservation.

Take Quiz
18.2 Biodiversity continued 19.1 Principles of genetic