Data gaps and opportunities for comparative and conservation biology.

Area of Science:

• Conservation biology
• Demography
• Ecology

Background:

• Biodiversity loss is a significant global challenge, with extinction rates far exceeding background levels.
• Species conservation policies rely on demographic data, yet accessible information is scarce.
• Understanding population dynamics (birth and death rates) is crucial for species survival and management.

Purpose of the Study:

• To assess the availability of demographic data for described tetrapod species.
• To introduce the Demographic Species Knowledge Index for classifying data accessibility.
• To identify knowledge gaps in demographic information for conservation planning.

Main Methods:

• Compiled demographic data for 32,144 extant mammal, bird, reptile, and amphibian species.
• Developed the Demographic Species Knowledge Index to quantify data availability.
• Analyzed data gaps, particularly for threatened species, and explored methods to improve data collection.

Main Results:

• Only 1.3% of tetrapod species possess comprehensive birth and death rate data.
• Demographic measures, including life span and litter size, are missing for 65% of threatened tetrapods.
• Data from Species360 network (zoos, aquariums) can significantly enhance demographic knowledge.

Conclusions:

• A critical lack of demographic data hinders effective species conservation strategies.
• Digitalizing existing knowledge, data imputation, and utilizing captive population data are vital for filling gaps.
• Prioritizing data collection and improving knowledge accessibility are essential for conserving at-risk taxa.