Halpern et al, 2019, Scientific Reports, "Recent pace of change in human impact on the world's ocean" Flashcards
What period does the study on cumulative human impacts on oceans cover?
The study covers the period from 2003 to 2013.
What is the primary cause of increasing cumulative human impacts on oceans?
Climate change, along with fishing, land-based pollution, and shipping.
Which ecosystems are most at risk from cumulative human impacts?
Coral reefs, seagrasses, and mangroves.
How was the cumulative human impact (CHI) measured?
By combining high-resolution annual data on 14 human stressors and their impact on 21 marine ecosystems
What percentage of the global ocean experienced increasing cumulative impacts?
59% of the global ocean
What was a significant finding about commercial fishing impacts?
Many countries saw declines in impacts from commercial fishing.
What role do climate change stressors play in cumulative impacts?
They are the dominant drivers, accounting for a significant portion of the increase in CHI.
What data resolution was used in the study?
Data was mapped at a 1 km resolution
How did the study’s results highlight the importance of local management?
By showing that local-scale stressors significantly increase CHI despite global trends.
What is a potential positive outcome indicated by the study?
Regions with declining impacts from some stressors could provide models for effective management.
