Ecosystem and Species Diversity
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Questions and Answers

Which of the following best describes habitat diversity?

  • The range of different habitats in an ecosystem or biome. (correct)
  • The total number of different species in an ecosystem.
  • The genetic variability within a single population.
  • The relative proportions of different species in a community.

Richness, by itself, is a complete measure of biodiversity because it accounts for ecosystem stability.

False (B)

What are the two components that species diversity encompass?

richness and evenness

Genetic mutations are ______ changes to an organism's DNA.

<p>random</p> Signup and view all the answers

Match the following diversity types with their descriptions:

<p>Habitat Diversity = Range of different habitats in an ecosystem or biome Genetic Diversity = Range of genetic material present in a population of a species Species Diversity = Number of species (richness) and their relative proportions (evenness)</p> Signup and view all the answers

Why is sexual reproduction considered an energy-intensive process?

<p>It involves the combination of genetic material from two individuals, involving complex processes that demand significant energy. (D)</p> Signup and view all the answers

A population of frogs in a pond exhibits high genetic diversity - some are resistant to a common fungal infection, while others are not. If the fungal infection spreads rapidly, what is the likely outcome for the frog population?

<p>The frog population will likely survive, with the infection-resistant individuals becoming more prevalent. (A)</p> Signup and view all the answers

Imagine a remote island ecosystem characterized by a single, dominant tree species that provides food and shelter for nearly all other organisms. A newly introduced, highly aggressive insect pest begins to decimate the tree population at an alarming rate. Which of the following scenarios would most critically determine the long-term resilience of this island ecosystem?

<p>The extent of genetic variation within the dominant tree species, specifically traits conferring resistance to the insect pest. (D)</p> Signup and view all the answers

Which of the following is an example of a direct threat to biodiversity?

<p>Over-harvesting (A)</p> Signup and view all the answers

Invasive alien species are native to the ecosystem they now inhabit.

<p>False (B)</p> Signup and view all the answers

What is the term for illegally hunting or catching game on land that is not one's own?

<p>poaching</p> Signup and view all the answers

The exploiting of a natural resource until its supply is so diminished that its exploitation is no longer sustainable, is known as ______.

<p>over-harvesting</p> Signup and view all the answers

Match the following categories from the IUCN Red List with their respective descriptions:

<p>EX = Species no longer exists LC = Species is widespread and abundant</p> Signup and view all the answers

Which factor is NOT used to determine the conservation status of a species according to the IUCN?

<p>Political stability of its habitat (C)</p> Signup and view all the answers

Assigning a global conservation status hinders the efforts of governments and NGOs.

<p>False (B)</p> Signup and view all the answers

Name one species that has gone extinct due to human activity, as mentioned in the text.

<p>Passenger Pigeon</p> Signup and view all the answers

Areas that contribute significantly to the global persistence of biodiversity are known as Key Biodiversity ______.

<p>Areas</p> Signup and view all the answers

Which of the following best defines 'sustainable development'?

<p>Development that meets the needs of the present without compromising the ability of future generations to meet their own needs. (B)</p> Signup and view all the answers

What was Charles Darwin's specific reason for keeping and breeding fancy pigeons?

<p>As part of his study of evolution. (A)</p> Signup and view all the answers

The tragedy of the commons arises from the alignment of individual self-interest and shared benefits of sustainable development.

<p>False (B)</p> Signup and view all the answers

Seed banks contribute to maintaining biodiversity by preserving seeds for potential future use during disasters.

<p>True (A)</p> Signup and view all the answers

In the context of Bako-Buntal Bay, what is a major economic driver that contributes to habitat loss?

<p>Palm oil</p> Signup and view all the answers

The geological timescale is divided into eons, which are further classified into what three units?

<p>eras, periods, and epochs</p> Signup and view all the answers

The __________ explosion occurred about 539.8 million years ago, marking the appearance of many new fossils with mineralized skeletons.

<p>Cambrian</p> Signup and view all the answers

Weak land-use policies, corruption, and inconsistent enforcement related to palm oil production are issues related to ______.

<p>governance</p> Signup and view all the answers

Which statement describes an 'insanely difficult' aspect of the palm oil conflict in Key Biodiversity Areas?

<p>Aligning the economic needs of smallholder farmers, the profit motives of large corporations, and the conservation goals of environmental groups requires navigating complex socio-economic and ecological factors with no singular, universally accepted solution. (B)</p> Signup and view all the answers

Match the following mass extinction causes with their descriptions:

<p>Tectonic plate movements = Can cause habitat changes and volcanic activity. Super-volcanic eruptions = Release massive amounts of gases and ash, altering climate. Climatic changes = Include drought, ice ages, and shifts in temperature. Meteorite impact = Can cause widespread destruction and environmental changes.</p> Signup and view all the answers

RSPO certification guarantees complete oversight and sustainability in palm oil production, eliminating all environmental impacts.

<p>False (B)</p> Signup and view all the answers

What primarily characterizes the proposed geological epoch known as the Anthropocene?

<p>Rapid environmental change and species extinction due to human activity. (C)</p> Signup and view all the answers

The existence and start date of the Anthropocene epoch are universally agreed upon by scientists.

<p>False (B)</p> Signup and view all the answers

Changes caused by human impacts will be detectable in what record over time?

<p>geological</p> Signup and view all the answers

Environmental laws specifically refer to the rules about how human beings use and impact ________ ________.

<p>natural resources</p> Signup and view all the answers

What does environmental justice primarily advocate for?

<p>The right of all people to live in a pollution-free environment, with equitable access to natural resources. (B)</p> Signup and view all the answers

Lobbying refers to attempts by individuals or private interest groups to influence government decisions.

<p>True (A)</p> Signup and view all the answers

Effective enforcement of environmental laws requires what type of institutions?

<p>strong administrative and legal</p> Signup and view all the answers

Sweden’s Environmental Code was enacted in what year?

<p>1999</p> Signup and view all the answers

In environmental constitutionalism, what does the introduction of environmental rights and obligations into the constitution achieve?

<p>It legally represents the environmental ideals of a state, becoming fundamental laws. (D)</p> Signup and view all the answers

Match the following countries with their pioneering environmental constitutional efforts:

<p>Ecuador = Recognizes the constitutional rights of nature. Brazil = Recognizes the constitutional rights of nature. Sweden = Has a Climate Act to achieve net-zero emissions by 2045 New Zealand = Gave legal personhood to Whanganui River</p> Signup and view all the answers

What does a higher value of 'D' signify in Simpson's Reciprocal Index?

<p>Greater biodiversity (C)</p> Signup and view all the answers

Evolution refers to small changes in the heritable characteristics of a population or species.

<p>False (B)</p> Signup and view all the answers

What is the driving mechanism behind evolutionary change, as proposed by Charles Darwin?

<p>Natural selection</p> Signup and view all the answers

Natural selection relies on genetic diversity to create ______ within a population.

<p>Variation</p> Signup and view all the answers

Match the concept of natural selection with its description:

<p>Variation = Genetic differences within a population. Adaptation = Fitter individuals in a population. Overproduction = More offspring are produced than can survive. Descent with Modification = Offspring inherit genes that give an advantage.</p> Signup and view all the answers

Which factor has NOT significantly led to evolutionary changes in species?

<p>Stable ecosystem conditions (A)</p> Signup and view all the answers

Speciation can occur when a population of a species faces identical environmental conditions.

<p>False (B)</p> Signup and view all the answers

What natural barrier separates bonobos and chimpanzees, contributing to their speciation?

<p>Congo River</p> Signup and view all the answers

Unlike natural selection, ______ selection relies on human intervention to select and breed organisms with desired traits.

<p>Artificial</p> Signup and view all the answers

What distinguishes artificial selection from natural selection?

<p>Artificial selection is driven by human desires, and natural selection is driven by environmental pressues. (C)</p> Signup and view all the answers

The formation of the Isthmus of Panama led to the merging of species from the Pacific Ocean and the Caribbean Sea.

<p>False (B)</p> Signup and view all the answers

Which of the following human activities has not directly influenced the evolution of species through artificial selection?

<p>Unintentional spread of invasive species through global trade (B)</p> Signup and view all the answers

Explain why genetic variation is essential for natural selection to occur.

<p>Without genetic variation, there would be no differences among individuals in a population for selection to act upon, making adaptation and evolution impossible.</p> Signup and view all the answers

The gradual evolution of extravagant features in birds of paradise, like vibrant plumage, exemplifies the concept of descent with ______.

<p>Modification</p> Signup and view all the answers

An apple maggot population originally only laid eggs on hawthorn apples, but now some lay eggs on domestic apples. What evolutionary process is this an example of?

<p>Speciation due to changing food source (B)</p> Signup and view all the answers

What problem does the 'tragedy of the commons' primarily highlight?

<p>The overuse of resources when property rights are not clearly defined. (C)</p> Signup and view all the answers

Traditional Indigenous approaches to land management are always sustainable, regardless of external factors.

<p>False (B)</p> Signup and view all the answers

What is one way we can reverse the decline in biodiversity?

<p>Conservation and regeneration measures (C)</p> Signup and view all the answers

Ecotourism always benefits all members of a local community equally.

<p>False (B)</p> Signup and view all the answers

What are two possible effects of increased foot traffic from tourists in protected areas?

<p>Soil erosion and vegetation loss</p> Signup and view all the answers

Economic arguments for conservation include considerations of ecotourism, genetic resources, and the natural ______.

<p>capital</p> Signup and view all the answers

Match the conservation strategy with its description:

<p>In-situ conservation = Protecting species in their natural habitat Ex-situ conservation = Relocating species to protected areas outside their natural habitat Habitat-based conservation = Conserving, protecting, and restoring habitats Species-based conservation = Focusing on conserving individual species</p> Signup and view all the answers

The precautionary principle mandates action be taken if there is a ______ risk of harm to humans and the environment, even without complete scientific proof.

<p>suspected</p> Signup and view all the answers

Match the environmental perspective with its conservation approach:

<p>Ecocentric = Focuses on low-intervention 'in situ' strategies for the intrinsic value of biodiversity Anthropocentric/Technocentric = Embraces scientific interventions like zoos, gene banks and ecotourism, driven by economic and societal value</p> Signup and view all the answers

Which of the following is the BEST example of an ecological argument for species preservation?

<p>The role of the species in maintaining ecosystem balance. (D)</p> Signup and view all the answers

Which economic sector might be negatively impacted as local communities shift their focus to tourism-related jobs?

<p>Fishing and Farming (D)</p> Signup and view all the answers

CITES only focuses on protecting plant species from international trade.

<p>False (B)</p> Signup and view all the answers

The economic value of biodiversity is always simple to determine.

<p>False (B)</p> Signup and view all the answers

What is the primary purpose of selecting a 'flagship species' in conservation?

<p>to appeal to the public and protect other species</p> Signup and view all the answers

Name two potential disruptions to wildlife caused by tourism activities.

<p>Altered behavior and habitat abandonment</p> Signup and view all the answers

The Convention on Biological Diversity was opened for signature at the UN Earth Summit in ______.

<p>Rio de Janeiro</p> Signup and view all the answers

Which of the following is NOT a listed disadvantage of the flagship conservation approach?

<p>They always guarantee sufficient funding for conservation efforts. (D)</p> Signup and view all the answers

If a local government sets visitor limits for a protected site, what is a challenge that might undermine this conservation effort?

<p>High demand during peak seasons (A)</p> Signup and view all the answers

Appendix I of CITES allows for the international trade of species threatened by extinction under strict regulations.

<p>False (B)</p> Signup and view all the answers

____ can alter animal behavior, causing some species to avoid certain areas or abandon nests.

<p>The presence of tourists</p> Signup and view all the answers

What is the main difference between in-situ and ex-situ conservation strategies?

<p>location of conservation effort: natural habitat vs protected areas</p> Signup and view all the answers

Which international organization publishes the Red List of threatened species?

<p>IUCN (B)</p> Signup and view all the answers

A conservation approach that considers both habitats and particular species, often using flagship or keystone species, is known as a ______ approach.

<p>mixed</p> Signup and view all the answers

Insanely Difficult: Imagine a scenario where a local community's traditional hunting grounds fall within a newly established national park. The park aims to protect a keystone species, but restrictions on hunting are causing severe food shortages for the community. Which ethical framework would BEST address this complex situation, balancing conservation needs with human well-being?

<p>Develop a collaborative, adaptive management plan that integrates traditional ecological knowledge, sustainable hunting practices, and alternative livelihood options for the community, ensuring both ecological integrity and social justice. (D)</p> Signup and view all the answers

Which characteristic is generally true of governmental organizations (GOs) involved in conservation?

<p>They are branches of local or national governments. (C)</p> Signup and view all the answers

Intergovernmental organizations (IGOs) always have legally binding agreements under international law.

<p>False (B)</p> Signup and view all the answers

What is an ecotone in the context of conservation area design?

<p>an area where two habitats meet</p> Signup and view all the answers

In a UNESCO Biosphere Reserve, the area where communities foster sustainable economic activities is called the _______ area.

<p>transition</p> Signup and view all the answers

Match the following conservation strategies with their descriptions:

<p>Rewilding = Restoring an environment to its state before human impact. Habitat Restoration = The process of assisting the recovery of a degraded, damaged, or destroyed ecosystem. Ecotourism = Tourism directed toward threatened natural environments, intended to support conservation efforts. No Mow May = Cessation of agriculture and resource harvesting.</p> Signup and view all the answers

Which of the following is NOT typically associated with the concept of rewilding?

<p>Extensive landscaping to introduce non-native species (D)</p> Signup and view all the answers

Positive feedback loops in ecosystems always lead to desirable outcomes for biodiversity conservation.

<p>False (B)</p> Signup and view all the answers

What is the primary goal of 'No Mow May' as a rewilding strategy?

<p>allowing the return of wildflowers and grasses</p> Signup and view all the answers

The shape of a conservation area is important, with a _______ shape being preferred to minimize edge effects.

<p>round</p> Signup and view all the answers

What is the role of a 'corridor' in the design of effective conservation areas?

<p>To provide safe passage between protected areas (B)</p> Signup and view all the answers

Reducing the financial resources available to non-governmental organizations (NGOs) generally increases their effectiveness in conservation efforts.

<p>False (B)</p> Signup and view all the answers

Name two factors, aside from financial resources, that affect the effectiveness of organizations involved in conserving ecosystems and biodiversity.

<p>media, speed of response, diplomatic constraints, political influence</p> Signup and view all the answers

A self-amplifying feedback loop that destabilizes an ecosystem is known as a _______ feedback loop.

<p>positive</p> Signup and view all the answers

According to the UNESCO biosphere reserve model, which area is strictly protected for conservation purposes?

<p>Core area (C)</p> Signup and view all the answers

Rewilding projects always receive immediate and universal support from local communities.

<p>False (B)</p> Signup and view all the answers

Flashcards

Biodiversity

The total diversity of living systems at various levels.

Habitat Diversity

The range of different habitats in an ecosystem or biome.

Genetic Diversity

The range of genetic material present in a population of a species.

Species Diversity

A product of species richness and their evenness in a community.

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Richness

The number of different species in a community.

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Evenness

The relative abundance of different species in a community.

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Genetic Mutations

Random changes to an organism's DNA that can generate new variants.

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Biodiversity Hotspots

Areas with a high proportion of rare and endangered species.

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Geological Timescale

A system dividing Earth's history into eons, eras, periods, and epochs based on geological and biological events.

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Cambrian Explosion

A significant event around 539.8 million years ago with an appearance of many new fossils during the early Paleozoic eon.

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Mass Extinctions

Periods in Earth's history when a large number of species went extinct due to various catastrophic events.

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The Anthropocene

A proposed epoch characterized by significant human impact on the Earth's geology and ecosystems.

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Environmental Laws

Regulations governing how humans interact with the environment to promote sustainability and reduce pollution.

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Environmental Justice

The right of all people to live in a clean environment, ensuring fair access to natural resources.

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Carbon Taxation

A policy where a fee is imposed on industries for the carbon emissions they produce, encouraging reduced pollution.

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Sweden's Environmental Code

A comprehensive legal framework for environmental protection enacted in 1999 to promote sustainable development.

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Climate Act (Klimatlagen)

A Swedish law established in 2018 binding the government to achieve net-zero greenhouse gas emissions by 2045.

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Environmental Constitutionalism

Incorporation of environmental rights and obligations into a nation's constitution.

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Geological Record

The historical record of Earth’s geological and biological changes observed over time.

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Seed Banks

Facilities that preserve seeds to maintain biodiversity for future use during disasters.

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Fossils

Preserved remains of extinct species used to study evolutionary history and determine the age of species.

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Human Impacts

Consequences of human activity affecting the Earth’s ecosystems and biodiversity over time.

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Effective Enforcement

The implementation of environmental laws through strong institutions, support, and public acceptance.

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Ecotourism

Tourism that supports conservation and local economies, reducing harm to the environment.

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Endangered Species

Species at risk of extinction, often due to loss of habitat or human activity.

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Environmental Degradation

Deterioration of the environment through depletion of resources, pollution, and loss of biodiversity.

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Carrying Capacity

The maximum number of individuals that an environment can sustain without degradation.

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Waste Management

The collection, transport, and disposal of garbage, especially plastic waste impacting wildlife.

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Social Inequalities from Tourism

Economic disparities caused by tourism, benefiting larger businesses over local communities.

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Ecocentric Perspective

An environmental view valuing biodiversity's intrinsic worth, favoring natural preservation.

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Anthropocentric Perspective

A human-centered view focusing on the economic and societal benefits of biodiversity.

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Precautionary Principle

A strategy to minimize harm to the environment when risks are suspected but not confirmed.

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Species Disruption by Tourism

Changes in animal behavior due to human presence, such as avoiding or abandoning nests.

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Government Organizations (GOs)

Branches of government responsible for regulating and enforcing laws related to conservation.

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Intergovernmental Organizations (IGOs)

Entities formed by multiple countries to address issues like conservation; agreements are often non-binding.

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Non-Governmental Organizations (NGOs)

Private organizations that operate independently from government, focusing on conservation and biodiversity.

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Edge Effect

Differences in ecosystem structure occurring at the border between two habitats, affecting biodiversity.

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Corridors in Conservation

Areas that connect different habitats, allowing safe passage for wildlife between protected lands.

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Proximity of Protected Areas

The closeness of conservation areas to each other enhances their effectiveness.

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UNESCO Biosphere Reserve Components

Three sections: core areas, buffer zones, and transition areas for effective biodiversity conservation.

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Rewilding

Restoration of natural environments to their pre-human disturbance state.

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Cessation of Agriculture

Stopping farming practices to allow natural flora to return in a disturbed ecosystem.

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Positive Feedback Loops in Conservation

Self-amplifying processes that enhance biodiversity and ecosystem resilience after disturbances.

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Ecotourism Benefits

Tourism that supports local economies and funding for conservation through engagement with ecosystems.

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Economic Benefits of Ecotourism

Job creation and economic growth for local communities derived from tourism.

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Funding for Conservation Efforts

Monies collected from entrance fees that support ecosystem protection and monitoring.

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Transition Area in Biosphere Reserves

Region where sustainable human activities coexist with conservation efforts for local communities.

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Designing Effective Conservation Areas

Creating reserves involves considering size, shape, edge effects, and proximity to enhance biodiversity.

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Direct Threats to Biodiversity

Factors that directly harm biodiversity, like over-harvesting and poaching.

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Indirect Threats to Biodiversity

Factors that adversely affect biodiversity indirectly, like pollution and climate change.

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Pollution

The introduction of harmful substances into the environment.

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Invasive Alien Species

Non-native species that disrupt local ecosystems after being introduced.

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Over-harvesting

Exploiting natural resources unsustainably until supply is depleted.

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Poaching

Illegally hunting or capturing wildlife.

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Illegal Pet Trade

The unauthorized capture and sale of wild animals for pets.

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The IUCN Red List

A catalog of threatened species, ranging from Least Concern to extinct.

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Population Size

The number of breeding individuals in a species' population.

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Breeding Potential

The capacity of a species to reproduce under ideal conditions.

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Geographic Range

The area where a species is found and its habitat fragmentation.

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Conservation Importance

Publicizing species' vulnerability to prioritize conservation efforts.

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Tragedy of the Commons

Outcomes from shared, unrestricted resource use leading to depletion.

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Sustainable Development

Development that meets current needs without compromising future generations.

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Key Biodiversity Areas (KBAs)

Sites critically important for global biodiversity persistence.

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Simpson’s Reciprocal Index

A measure of species diversity, indicating richness and evenness.

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Biodiversity (D)

A quantitative measure of biological diversity in a given area.

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Natural Selection

The process where organisms better adapted to their environment tend to survive and produce more offspring.

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Evolution

The cumulative change in heritable characteristics of a population across generations.

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Variation in Species

Differences among individuals within the same species often due to genetic diversity.

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Adaptation

The process by which a species becomes better suited to its environment.

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Overproduction

The phenomenon where organisms produce more offspring than can survive, leading to competition.

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Descent with Modification

The passing of advantageous traits from parents to offspring leading to evolutionary changes.

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Speciation

The formation of new and distinct species in the course of evolution.

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Artificial Selection

The intentional breeding of organisms for desired traits by humans.

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Isolated Populations

Populations that have become separated and evolve independently due to barriers.

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Impact of Human Activity

Human actions that affect evolutionary processes and species' survival.

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Congo River Isolation

The natural barrier that separates bonobos and chimpanzees, leading to different adaptations.

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Birds of Paradise

An example of natural selection where males evolve bright traits to attract mates.

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Traditional Indigenous Approaches

Sustainable land management methods used by Indigenous peoples, facing modern challenges.

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Arguments for Conservation

Reasons for preserving species and habitats, including aesthetic and ethical justifications.

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Economic Reasons for Preservation

Arguments based on the financial benefits of preserving ecosystems, like ecotourism.

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Ecological Reasons for Preservation

Arguments related to maintaining ecosystems and environmental balance.

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Species-Based Conservation

Focuses on preserving individual species both in their natural and controlled environments.

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Habitat-Based Conservation

Conservation practices aimed at protecting entire ecosystems and their habitats.

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Mixed Conservation Approach

Combines both species and habitat conservation methods for better outcomes.

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Flagship Species

Charismatic species used to garner support for conservation efforts.

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Convention on Biological Diversity

An international treaty aimed at the conservation of biological diversity.

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CITES

Convention on International Trade in Endangered Species of Wild Fauna and Flora.

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In-Situ Conservation

Protection of endangered species in their natural habitat.

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Ex-Situ Conservation

Conservation by relocating species to controlled environments for protection.

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Study Notes

3.1 Biodiversity and Evolution

  • Biodiversity encompasses habitat, genetic, and species diversity.
  • Habitat diversity refers to the variety of habitats within an ecosystem or biome.
  • Genetic diversity is the variation in genetic material within a species population.
  • Species diversity is the richness (number of species) and evenness (relative proportions) of species in a community. Simpson's Reciprocal Index quantifies species diversity.
  • Genetic mutations are random changes to DNA, potentially creating new gene variants from this random process.
  • Sexual reproduction, while energy-intensive, is the dominant method in eukaryotes.
  • Biodiversity contributes to ecosystem resilience. Genetic diversity allows organisms to adapt to threats (diseases or predators). Habitat diversity provides alternative components if one habitat is lost.
  • Biodiversity is unevenly distributed, with certain areas possessing high concentrations of species.
  • Simpson’s Reciprocal Index calculates species diversity (higher values indicate greater diversity). The formula is essential for comparing different ecosystems.
  • Evolution is the cumulative change in heritable characteristics in a population or species.
  • Natural selection is the mechanism of evolution; variation, overproduction, competition, and adaptation are integral. Natural variation is required for natural selection to function.
  • Fitter individuals (better adapted) are more likely to reproduce and transfer advantageous genes to offspring. This results in the evolution of advantageous traits over time and generations.
  • Natural variation is influenced by natural genetic diversity, which enables organisms to adjust to environmental pressures, thus driving evolution.
  • Genes, made of DNA sequences located on chromosomes, are fundamental units of heredity.
  • Speciation is the development of new species from existing ones, often due to isolation and adaptation to different environments.
  • The Isthmus of Panama's formation isolated species, leading to speciation in some cases.
  • The Congo River separates chimpanzees and bonobos, influencing divergence.
  • Artificial selection occurs when humans selectively breed organisms possessing desired traits.
  • Natural selection is driven by environmental pressures while artificial selection is guided by human preferences.
  • Fossils document extinct species and help determine their age, using the geological timescale.
  • The geological timescale is divided into eons, eras, periods, and epochs. The Cambrian explosion is a significant marker.
  • Mass extinctions, with diverse causes (tectonic movements, volcanic eruptions, climate change, meteorite impacts, and sea level changes), have shaped biodiversity.
  • The Anthropocene is a proposed geological epoch marked by rapid environmental change and species extinction due to human activity.
  • Human activities influence selective forces, leading to evolutionary changes in species.
  • Examples include climate change, hunting, and habitat modification.

3.2 Human Impact on Biodiversity

  • Human activities directly and indirectly impact biodiversity.
  • Direct impacts include over-harvesting, poaching, and the illegal wildlife trade. Overharvesting depletes resources, poaching illegally hunts/captures, and illegal wildlife trade targets endangered species illegally.
  • Indirect impacts include habitat loss, climate change, pollution, and invasive alien species. Habitat loss and degradation destroy vital environmental spaces.
  • Pollution degrades air, water, and soil.
  • Invasive alien species disrupt ecosystems.
  • The IUCN Red List classifies species risk levels (extinct to Least Concern).
  • Factors used to determine conservation status include population size, trend, breeding potential, range, and threats.
  • Global conservation status helps prioritize conservation efforts.
  • Key Biodiversity Areas (KBAs) hold significant biodiversity, often prioritizing species and habitats for conservation.
  • Conflicts in KBA's are due to competition between economic activities (e.g., palm oil plantations) and conservation efforts.
  • Sustainable development and conservation address the conflict between individual needs and the environment's well-being. The Tragedy of the Commons describes this challenge where individuals exploit shared resources without considering the long-term impact, ultimately leading to its depletion.
  • Traditional Indigenous approaches to land management can be sustainable but face challenges from factors like population growth, economic development, and climate change.
  • Environmental justice emphasizes equitable access to resources and pollution-free environments for all.

3.3 Conservation and Regeneration

  • Conservation can be justified based on aesthetic, ecological, economic, ethical, and social reasons. Economic reasons may include ecotourism. Ecological reasons can be related to ecosystem integrity. Ethical arguments may cite the intrinsic value of biodiversity. Social arguments focus on the well-being of humans.
  • Species-based conservation focuses on protecting species, both in situ (natural habitats) and ex situ (captive breeding).
  • Habitat-based conservation protects habitats through reserves, national parks, and marine protected areas.
  • A mixed conservation approach prioritizes both species and habitats. Flagship species attract public support, while keystone and umbrella species help maintain crucial habitats.
  • The Convention on Biological Diversity promotes conservation and sustainable use of biodiversity.
  • In-situ conservation protects species within their natural environments. Ex-situ conservation is the preservation of species outside their original habitat.
  • Effective conservation requires detailed knowledge of target species and effective area design.
  • Key criteria for conservation area design include size (larger = better), shape, edge effects (reducing edge is optimal), corridors (safe passage), and proximity (close proximity is more effective).
  • UNESCO Biosphere Reserves emphasize a balance between conservation and sustainable human activities. Rewilding aims to restore natural environments, reduce human impact, and restore biodiversity.
  • Positive feedback loops can enhance biodiversity through rewilding.
  • Ecotourism can support conservation efforts through funding and community involvement. However, overtourism and uncontrolled growth can negatively impact the environment.
  • Biodiversity planetary boundaries outline the conservation targets required to maintain a safe operating space for humans.
  • Environmental perspectives influence conservation and regeneration strategies. Anthropocentric (human-centered) and ecocentric (environment-centered) perspectives may favor different methods.
  • Evaluating conservation projects determines their success through several criteria.

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Test your knowledge of biodiversity, habitat richness, and species diversity. Explore genetic mutations, sexual reproduction, and ecosystem resilience. Understand the factors that impact species survival and ecosystem stability.

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