Problem 6 - Campbell Biology

Question

Which of the following statements about protected areas established to preserve biodiversity is true? (A) About \(25 \%\) of Earth's land area is now protected. (B) National parks are the only type of protected area. (C) Management of a protected area does not need to be coordinated with management of the surrounding area. (D) It is especially important to protect biodiversity hot spots.

Step-by-Step Solution

Answer

Option (D) is true. It is important to protect biodiversity hot spots.

Step 1: Analyze Option (A)

Option (A) states that about 25% of Earth's land area is now protected. Verify the statistic: Currently, about 15% of the Earth's land area is designated as protected. Therefore, Option (A) is incorrect.

Step 2: Analyze Option (B)

Option (B) claims that national parks are the only type of protected area. Consider other types of protected areas: There are multiple types such as wildlife reserves, nature reserves, and marine protected areas. Hence, Option (B) is incorrect.

Step 3: Analyze Option (C)

Option (C) states that management of a protected area does not need to be coordinated with management of the surrounding area. Good management practices involve coordination with surrounding areas to ensure beneficial outcomes for biodiversity. Thus, Option (C) is incorrect.

Step 4: Analyze Option (D)

Option (D) mentions that it is especially important to protect biodiversity hot spots. Biodiversity hotspots hold significant amounts of endemic species and are under threat, making their preservation crucial. Therefore, Option (D) is correct.

Key Concepts

protected areas

Protected areas are regions designated primarily for the conservation of wildlife and natural resources. They are crucial for safeguarding ecosystems, species, and genetic diversity. Types of protected areas include:

• National Parks: These are set aside for public enjoyment and recreation while conserving the natural environment.
• Wildlife Reserves: Specifically established to protect wildlife species and their habitats.
• Nature Reserves: Areas conserved for their biodiversity value, often with stricter access limits.
• Marine Protected Areas: Parts of the ocean designated to protect marine ecosystems.

Protected areas help maintain ecological processes, provide refuges for threatened species, and support scientific research. Currently, about 15% of the Earth's land area is protected, not 25% as commonly misconceived.

biodiversity hotspots

Biodiversity hotspots are regions that are both rich in endemic species (those found nowhere else in the world) and significantly threatened by human activities. Protecting these areas is especially important due to their unique biodiversity. Key points about biodiversity hotspots include:

• They cover just 2.3% of Earth’s land surface but contain over 50% of the world’s plant species and nearly 43% of bird, mammal, reptile, and amphibian species as endemics.
• Hotspots face severe threats from deforestation, habitat destruction, climate change, and more.
• Protecting these areas helps conserve vast amounts of biodiversity while addressing issues like climate regulation and ecosystem services.

Examples of biodiversity hotspots are the Amazon Rainforest in South America and the Congo Basin in Africa. Preserving these areas is crucial for the overall health of our planet.

conservation management

Conservation management involves practices to maintain and restore natural habitats and protect species. It requires a holistic approach that often includes:

• Coordination with Surrounding Areas: Effective management must align with broader landscape and seascape considerations to be successful. This ensures ecological connections, allowing species to move freely and ecosystems to function properly.
• Adaptive Management: This involves continuous monitoring and updating strategies based on the latest scientific findings and environmental changes.
• Community Involvement: Engaging local communities in conservation efforts ensures sustainable practices and garners public support.
• Legislation and Policy: Robust legal frameworks are necessary to enforce protection and manage protected areas efficiently.

Proper conservation management helps mitigate threats to biodiversity, restore degraded habitats, and support ecosystem services that are vital for human well-being.