caa a22 4500 445892129 CHVBK 20180317145619.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10750-011-0715-3 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0715-3 Nutrients in precipitation and the phytoplankton responses to enrichment in surface waters of the Albemarle Peninsula, NC, USA after the establishment of a large-scale chicken egg farm [Elektronische Daten] [Karen Rossignol, Hans Paerl, John Fear, Jeremy Braddy] Nitrogen (N) and phosphorus (P) released in waste from animal feeding operations can stimulate phytoplankton biomass production in local receiving waters. Changes in weekly wet atmospheric N and P were measured from 2005 to 2008 at monitoring stations located 0.8, 7.9, and 10.3km downwind from a new chicken egg production facility on the Albemarle Peninsula, North Carolina. After this farm began operating, there was a significant doubling in mean wet NH4 + concentrations (465-1,022μg l−1) at 0.8km with no change at the other sites. To measure the phytoplankton responses to nutrient enrichment, we conducted seasonal N and P enrichment bioassays from 2006 to 2008 on nearby Phelps Lake and Alligator River. These low-nutrient waters responded to nutrient additions, with the highest increases in phytoplankton primary productivity (14C uptake) and biomass (chlorophyll a) occurring in the combined N and P treatments suggesting co-limitation of N and P. Although we did not find an increased nutrient signal in precipitation at sites >0.8km from the farm, there is the potential for atmospheric deposition of N to these and other waters located N/NE of the farm given prevailing winds and distance that NH4 + aerosols can travel. Furthermore, surface runoff from the farm may impact receiving waters downstream (e.g., Pungo and Pamlico Rivers). In order to prevent excessive phytoplankton productivity and biomass both N and P inputs should be carefully assessed and potentially controlled in these nutrient-sensitive waters. Springer Science+Business Media B.V., 2011 Nitrogen nationallicence Phosphorus nationallicence Water quality nationallicence Precipitation nationallicence Bioassay nationallicence Albemarle nationallicence Rossignol Karen Institute of Marine Sciences, University of North Carolina at Chapel Hill, 28557, Morehead City, NC, USA aut Paerl Hans Institute of Marine Sciences, University of North Carolina at Chapel Hill, 28557, Morehead City, NC, USA aut Fear John North Carolina National Estuarine Research Reserve, North Carolina Division of Coastal Management, 28516, Beaufort, NC, USA aut Braddy Jeremy Institute of Marine Sciences, University of North Carolina at Chapel Hill, 28557, Morehead City, NC, USA aut Hydrobiologia Springer Netherlands 671/1(2011-08-01), 181-191 0018-8158 671:1<181 2011 671 10750 https://doi.org/10.1007/s10750-011-0715-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0715-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rossignol Karen Institute of Marine Sciences, University of North Carolina at Chapel Hill, 28557, Morehead City, NC, USA aut NATIONALLICENCE 700 1- Paerl Hans Institute of Marine Sciences, University of North Carolina at Chapel Hill, 28557, Morehead City, NC, USA aut NATIONALLICENCE 700 1- Fear John North Carolina National Estuarine Research Reserve, North Carolina Division of Coastal Management, 28516, Beaufort, NC, USA aut NATIONALLICENCE 700 1- Braddy Jeremy Institute of Marine Sciences, University of North Carolina at Chapel Hill, 28557, Morehead City, NC, USA aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 671/1(2011-08-01), 181-191 0018-8158 671:1<181 2011 671 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer