Resource footprints and their ecosystem consequences.

Area of Science:

• Environmental Science
• Ecology
• Environmental Policy

Background:

• Current environmental footprint methods primarily quantify resource pressures (e.*g.*, water use, emissions) driven by consumption.
• These methods often fail to assess the actual ecological consequences of these pressures.
• Policymaking requires a shift from focusing on pressures to understanding environmental consequences.

Purpose of the Study:

• To introduce and evaluate "ecosystem impact footprints" that quantify consequences for biodiversity.
• To compare these new impact footprints with existing multi-regional input-output (MRIO)-based pressure footprints.
• To analyze how this new perspective alters the understanding of national contributions to global environmental impacts.

Main Methods:

• Development and application of the "ecosystem impact footprints" methodology.
• Assessment of biodiversity consequences derived from resource consumption.
• Comparison of results with traditional MRIO-based pressure footprints.

Main Results:

• The new perspective reveals significant shifts in the relative contributions of nations to global environmental footprints.
• Wealthy countries exhibit high pressure footprints in lower-income nations.
• However, their impact footprints often originate in higher-income countries, indicating a complex global supply chain effect.

Conclusions:

• Ecosystem impact footprints provide a more accurate assessment of environmental consequences than pressure footprints.
• The findings highlight the need to reconsider policy responses for biodiversity preservation based on impact origins.
• This approach offers a novel insight into global environmental responsibilities and conservation strategies.