Biodiversity everywhere is ordered by a common ‘hidden’ pattern , PgII.

Key Highlights:

• A new study reveals a universal pattern in biodiversity organization across different biogeographical regions and taxa [including birds, mammals, amphibians, reptiles, rays, dragonflies, and trees].
• The study identified seven repeating biogeographical sectors organized like an onion, with dense, unique biodiversity at the center grading outward towards mixed margins.
• Temperature and rainfall models can predict the biogeographical sector a cell belongs to in 98% of region-taxon combinations.
• The research underscores the importance of understanding species distribution for effective conservation strategies in the face of climate change.

Detailed Insights:

• Biologists have traditionally divided the Earth into biogeographical regions, each with a unique mix of species shaped by its history and climate.
• Researchers analyzed over 30,000 species, using network analysis to group cells with frequently co-occurring species into biogeographical regions.
• The study found that biodiversity is organized in layers, from core hotspots with high richness and endemicity to transition zones with species-poor, wide-ranging generalists.
• Environmental filters like elevation and climate play a crucial role in determining species distribution within these layers.
• Understanding species distribution can aid in making informed decisions about conservation, especially in regions like the Indian Himalayas facing climate change.
• The study highlights the need for region-specific research in biodiversity-rich areas like the tropics and Global South, which are currently underrepresented in global datasets.

Key Concepts Involved:

• Biogeographical Region: A large area of the earth's surface with similar plant and animal life.
• Endemicity: The ecological state of a species being unique to a defined geographic location.
• Taxa: A group of one or more populations of an organism or organisms seen to form a unit.