Conservation Science Cheat Sheet

The core ideas of Conservation Science distilled into a single, scannable reference — perfect for review or quick lookup.

PiqCue — piqcue.com/conservation-science/cheatsheet

Quick Reference

Biodiversity

The variety of life at all levels of biological organization, including genetic diversity within species, species diversity within ecosystems, and ecosystem diversity across landscapes. Biodiversity underpins ecosystem resilience, productivity, and the provision of ecosystem services.

Habitat Fragmentation

The process by which large, continuous habitats are divided into smaller, isolated patches by human activities such as agriculture, roads, and urbanization. Fragmentation reduces habitat area, increases edge effects, and isolates wildlife populations, making them more vulnerable to extinction.

Minimum Viable Population (MVP)

The smallest population size of a species that can survive in the wild over a defined time period with a given probability, accounting for demographic, environmental, and genetic stochasticity. Below this threshold, populations face elevated extinction risk.

Ecosystem Services

The benefits that humans derive from ecosystems, categorized as provisioning (food, water, timber), regulating (climate regulation, flood control, pollination), cultural (recreation, spiritual value), and supporting (nutrient cycling, soil formation) services.

Systematic Conservation Planning

A structured, science-driven framework for identifying priority areas for protection that efficiently represent biodiversity targets while minimizing costs and conflicts with competing land uses. It uses spatial analysis and optimization algorithms to design reserve networks.

Extinction Vortex

A downward spiral in which small, declining populations become trapped in reinforcing feedback loops of inbreeding depression, loss of genetic diversity, demographic instability, and increased vulnerability to environmental catastrophes, accelerating the path to extinction.

Keystone Species

A species that has a disproportionately large effect on its ecosystem relative to its abundance. Removing a keystone species triggers cascading changes throughout the food web and can fundamentally alter ecosystem structure and function.

Corridor Ecology

The science of designing and managing habitat corridors that connect isolated patches of natural habitat, allowing wildlife movement, gene flow, and species migration in response to climate change across otherwise fragmented landscapes.

Environmental DNA (eDNA)

Genetic material shed by organisms into their environment through skin cells, mucus, feces, or decomposition. Sampling and analyzing eDNA from water, soil, or air allows researchers to detect species presence without direct observation or capture.

Rewilding

A conservation strategy focused on restoring natural processes and, where appropriate, reintroducing native species, particularly large predators and herbivores, to allow ecosystems to self-regulate and recover ecological complexity without ongoing intensive human management.

Key Terms at a Glance

Adaptive Management:An iterative decision-making process that monitors outcomes and adjusts strategies based on what is learned.

Biodiversity:The total variety of life, encompassing genetic, species, and ecosystem diversity.

Biodiversity Hotspot:A biogeographic region with significant endemic species that has lost most of its original natural habitat.

Captive Breeding:The controlled reproduction of endangered species in facilities like zoos to increase population size for potential reintroduction.

Carrying Capacity:The maximum population size of a species that an environment can sustain indefinitely given available resources.

Community-Based Conservation:Conservation approaches that engage local communities as partners and stakeholders in managing natural resources.

Conservation Genetics:The application of genetics to preserve species as dynamic entities capable of coping with environmental change.

Corridor:A strip of habitat connecting otherwise isolated patches, facilitating wildlife movement and gene flow.

Ecological Footprint:A measure of the biologically productive area required to sustain a population's consumption and absorb its waste.

Ecosystem Services:The direct and indirect benefits that ecosystems provide to humans, including clean water, pollination, and climate regulation.

Edge Effect:Altered environmental conditions and species composition at the boundary between two different habitat types.

Endemic Species:A species found exclusively in a particular geographic area and nowhere else in the world.

Environmental DNA (eDNA):Genetic material released by organisms into the environment, used for non-invasive species detection.

Extinction Debt:The future extinction of species due to past habitat loss that has not yet fully manifested in current species counts.

Flagship Species:A charismatic species used to raise public awareness and funding for broader conservation efforts.

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