Evaluate Biodiversity Preservation Strategies - Biology

A harvest level that can be maintained without long-term decline. Balances harvest with population's natural regeneration capacity.

Harvest quotas. Sets harvest limits to prevent overexploitation of species.

Harvesting organisms faster than populations can recover. Exceeds natural reproduction rates, causing population decline.

Prevention (biosecurity and early detection). Stopping introductions is cheaper and more effective than removal.

A nonnative species that spreads and harms native ecosystems. Non-natives that outcompete or disrupt native species interactions.

Ecosystem-based management. Protects key species that maintain entire ecosystem stability.

A species with a disproportionately large effect on its ecosystem. Their removal causes ecosystem collapse despite low abundance.

Compact reserve design. Minimizes edge effects by maximizing interior-to-perimeter ratio.

Altered conditions at habitat boundaries that change species survival. Habitat edges experience different microclimate and predation pressures.

Gene flow between separated populations. Allows genetic exchange between isolated habitat patches.

Wildlife corridors. Corridors reconnect fragmented habitats, allowing species movement.

Breaking continuous habitat into smaller, isolated patches. Divides large habitats into smaller pieces, reducing population connectivity.

Maintain ecosystem function and prevent species extinctions. Conservation aims to sustain ecological processes and prevent species loss.

Variation of genes, species, and ecosystems in an area. Encompasses all living diversity at genetic, species, and ecosystem levels.

Unintended capture of non-target species that increases mortality. Accidental catch kills species not targeted by fishing operations.

Selective gear (for example, TEDs and circle hooks). Specialized equipment prevents capture of non-target species.

Contaminants that reduce survival, reproduction, or habitat quality. Chemical and physical pollutants directly harm organisms and ecosystems.

Reducing nitrogen and phosphorus runoff. Excess nutrients cause algal blooms and oxygen depletion.

Nutrient enrichment causing algal blooms and oxygen depletion. Excess nutrients trigger harmful algal blooms and fish kills.

Reducing greenhouse gas emissions to limit habitat and range shifts. Reduces warming that forces species to shift ranges.

Managing ecosystems to increase resilience to changing conditions. Helps ecosystems cope with unavoidable climate impacts.

Protecting species in their natural habitats. Protects species in their original, natural environments.

Protecting species outside natural habitats (zoos, seed banks). Maintains species away from their natural environments for safety.

Seed bank. Seed banks preserve genetic material outside natural habitats.

Genetic diversity of plant species for future restoration. Maintains genetic material for restoration and research purposes.

Breeding threatened species in captivity to increase population size. Increases population size before releasing back to wild.

Releasing captive-bred or relocated organisms into native range. Restores species to areas where they previously existed.

Inbreeding depression. Small populations lose fitness through mating between relatives.

Random allele frequency change that can reduce genetic diversity. Stronger in small populations, reducing adaptive potential.