Projected climate-driven faunal movement routes.

Area of Science:

• Ecology
• Conservation Biology
• Climate Change Biology

Background:

• Historically, species migrations were driven by climate shifts.
• Modern species movements are increasingly constrained by human land-use patterns.
• Understanding these constraints is vital for effective conservation.

Purpose of the Study:

• To identify critical areas for species movement in the Western Hemisphere under projected climate change.
• To assess the impact of human land-use on potential species migration routes.
• To inform conservation strategies for mitigating climate-driven biodiversity loss.

Main Methods:

• Utilized projected climate-driven shifts for 2903 vertebrate species.
• Integrated current human landscape impacts with species distribution models.
• Applied movement models to predict species' migratory pathways.

Main Results:

• Identified high-density movement areas including the Amazon Basin, southeastern US, and southeastern Brazil.
• Highlighted regions with intact landscapes (e.g., southern Bolivia) and heavily impacted areas (e.g., southeastern US).
• Revealed potential barriers to species movement caused by human land-use activities.

Conclusions:

• Conservation efforts must prioritize protecting lands that facilitate species movement.
• Human land-use patterns pose significant barriers to climate-driven species redistribution.
• Integrated conservation planning is essential to address climate change impacts on biodiversity.