Research Highlight: Increased mobilization of aged carbon to rivers by human disturbance

Novus member Rebecca Barnes (Colorado College) and colleagues recently published an article in Nature Geoscience assessing radiocarbon age of dissolved organic carbon (DOC) in 135 watersheds throughout the globe. DOC ages were compared to land cover, human population, and environmental variables of the surrounding watershed. The study found that age of DOC in rivers increased with increasing human impact on the watershed, and with decreases in annual precipitation, such that 3-9% of the total export of DOC from land to river systems is aged carbon reintroduced to the modern carbon cycle via anthropogenic disturbance of the watershed landscape.

Full citation:
Butman, DE, HF Wilson, RT Barnes, MA Xenopoulos, PA Raymond (2015) Increased mobilization of aged carbon to rivers by human disturbance. Nature Geoscience, 8: 112-116

Advertisements
This entry was posted in Uncategorized and tagged , , , , , , , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s