Brian Walker

A safe operating space for humanity

Planetary Boundaries: Exploring the Safe Operating Space for Humanity

"Anthropogenic pressures on the Earth System have reached a scale where abrupt global environmental change can no longer be excluded. We propose a new approach to global sustain...

Global Biodiversity Scenarios for the Year 2100

Scenarios of changes in biodiversity for the year 2100 can now be developed based on scenarios of changes in atmospheric carbon dioxide, climate, vegetation, and land use and th...

Biotic Control over the Functioning of Ecosystems

Changes in the abundance of species — especially those that influence water and nutrient dynamics, trophic interactions, or disturbance regime — affect the structure and functio...