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Hans Shares Tips & Tricks for Life in Isolation

Tips from remote field researchers on life in isolation, tough environments

Clean Waters and SAV: Making the Connection

Dr. Hans Paerl and Dr. Nathan Hall discussed the Status of NC’s estuarine water quality yesterday at the Clean Waters and SAV (submerged aquatic vegetation) workshop. Their presentations focused on existing and developing water quality management strategies, past and present estuarine water quality challenges, and water quality monitoring and assessment. Their participation in this workshop helped provide input for the NC Coastal Habitat Protection Plan revision to develop collaborative management strategies to preserve and improve water quality suitable for SAV growth in NC coastal waters. Click the links below to view their presentations.

Paerl SAV Conference presentation

New Decade, Neuse Blooms

Happy New Year.
The Neuse has kicked off the new decade with an impressive bloom of Prorocentrum minimum. We saw the beginnings of this bloom a month ago in December but it’s a lot more dense now. The surface water at station 100 was actually scummy (see attached photo taken by Melissa LaCroce) and the YSI measured 200 ug/L chl-a at 0.3 m depth. The bloom extended throughout the water column at station 100. Upstream to station 50, the bloom was concentrated just below the surface, and downstream at station 120 the bloom was concentrated along the pycnocline. Subsurface aggregations are really common for Prorocentrum minimum, but in my experience such dense surface scums are less common. However, there is a nice photo from an airplane of a Neuse River P. minimum bloom in Springer et al. (Harmful Algae 2005). P. minimum is not know to be toxic, and despite the high biomass levels there aren’t reports of problems associated with these blooms (e.g. hypoxia, fish kills, etc.). While we await further laboratory measurements, I think it’s safe to assume that such high biomass levels are at least partly the result of physical concentration of highly motile cells along a frontal zone.  Other than the bloom, the river is about 4-6 degrees warmer than normal for this time of year. The river is also quite salty with salinity near 20 at throughout the water column at the lower stations.
Best regards,
Nathan

Hans Talks About HABs

Dr. Hans Paerl spoke with EOS about a new harmful algal bloom study showing that HABs are getting worse with climate change. Click the photo below to read the article or here for the pdf.

2009 HAB on Lake Erie

Photo Credit: NOAA Great Lakes Environmental Research Laboratory

Hans Awarded in China

Dr. Hans Paerl received the International Cooperation Award from the governor of the Jaingsu Province for his work teaching at Hohai University and for the research done on Lake Taihu and other Chinese lake projects. The pictures below  include Dr. Paerl and his colleagues Guangwei Zhu and XuHai (left to right) from the Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing. Also see Dr. Paerl with the African exchange students at Hohai University, where he was teaching an aquatic ecology course last May.

Hans is back in China

Dr. Hans Paerl is back in China collaborating with colleagues from Hohai University and has been busy with bio-assays and water sampling on Lake Taihu! Check out some of the photos and stay tuned for more about his field work there!

NC Museum of Natural Sciences- Lunchtime Discovery 25 Sept 2019

The Case of the Dead Fish, the Missing Oxygen and other Mysteries from the Neuse River Estuary

Dr. Hans Paerl Talks to The News and Observer about Water Quality and Hurricanes

 

 

Hans Talks to N&O

WRAL interviews Dr. Hans Paerl as part of their “Climate in Crisis” focus in partnership with NBC

 

WRAL interviews Dr. Hans Paerl

Dr. Nathan Hall Talks About Algal Blooms in the Cape Fear River

 

Algal Blooms on The Cape Fear River

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