- Coal mining and stream insects: Researchers explore the TDS connectionPosted 2 days ago
- NexSens CB-Series coastal buoys offer flexibility in monitoring system designPosted 3 days ago
- Ohio State University’s experimental wetland research park seeks scientistsPosted 6 days ago
- Monitoring network offers rare insight into King Harbor fish killPosted 9 days ago
- Q&A with John Lenters: Lake observing systems from Alaska to NebraskaPosted 10 days ago
- Monitoring network tracks Rio Grande cutthroat trout’s shrinking habitatPosted 10 days ago
- Monitoring Lake Mead: Scientists track reservoir through water quality highs and lowsPosted 12 days ago
- FloWav Pipeline PSA-AV flow meter resists raggingPosted 12 days ago
2012 Gulf of Mexico dead zone among smallest recorded
Drought throughout the Midwest has led to the fourth-smallest Gulf of Mexico dead zone since 1985, according to the federal National Centers for Coastal Ocean Science.
A mid-summer hypoxia survey carried out by the Louisiana Universities Marine Consortium found a 2,889-square-mile dead zone, which is less than half the area covered in 2010 and 2011.
The smaller dead zone is likely the result of drought in the Mississippi River watershed, which led to a smaller dose of nutrients washing into the Gulf to fuel algae growth.
The drought also cut the volume of water flowing through the Mississippi, which limited the hypoxia-promoting stratification that occurs when fresh water enters the Gulf and forms a layer atop the denser ocean water, which prevents mixing.