Snow Geese and Arctic Habitat Destruction

Snow Geese Overpopulation

The Problem

• Snow geese population has grown rapidly since the 1960s.
• Annual growth rate of 5% is considered staggering.
• Geese consume vast areas of tundra, destroying their habitat.
• "Grubbing" behavior leads to soil erosion and increased salinity.
• Significant percentage of salt marsh areas along James and Hudson Bay coastline has been destroyed.
• Damage may last for decades or longer.

Impact

• Loss of vegetation leads to hypersaline soil conditions.
• Decline in plant diversity, with salt-tolerant species replacing others.
• Goslings suffer from starvation; reduced growth rates are observed.
• Other species, like polar bears and caribou, are also affected.
• Farmers suffer crop damage due to geese feeding on winter wheat.
• Outbreaks of avian cholera increase mortality in flocks.

Research & Monitoring

• Scientists study geese populations and habitat destruction.
• Web tags used to track individual birds and assess growth rates.
• Exclosures protect plant communities to study the effects of geese.

Factors Contributing to Overpopulation

• Refuges provide safe feeding and resting areas during migration.
• Abundant food sources available on migration routes and wintering grounds.

Potential Solutions

• Involve hunters in reducing goose numbers.