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Author (up) Fertig, B.M.; O’Neil, J.M.; Beckert, K.A.; Cain, C.J.; Needham, D.M.; Carruthers, T.J.B.; Dennison, W.C. doi  openurl
  Title Elucidating terrestrial nutrient sources to a coastal lagoon, Chincoteague Bay, Maryland, USA Type Journal Article
  Year 2013 Publication Estuarine, Coastal and Shelf Science Abbreviated Journal Estuar. Coast. Shelf Sci.  
  Volume 116 Issue Pages 1-10  
  Keywords coastal lagoons; nitrogen; anthropogenic factors; water quality; land use; Maryland; Chincoteague Bay  
  Abstract Long-term non-linear ecosystem-scale changes in water quality and biotic communities in coastal lagoons have been associated with intensification of anthropogenic pressures. In light of incipient changes in Johnson Bay (an embayment of Chincoteague Bay, Maryland-Virginia, USA), examination of nitrogen sources was conducted through synoptic water quality monitoring, stable nitrogen isotope signatures (deltaN-15) of in situ bioindicators, and denitrification estimates. These data were placed in the context of long-term and broader spatial analyses. Despite various watershed protection efforts, multiyear summer time studies (2004-2007) suggested that high levels of terrestrially derived nutrients still enter Johnson Bay. Total nitrogen concentrations in Johnson Bay were 132% the concentrations in the broader Chincoteague Bay during the late 1970s (mean 2004-2007 was 40.0 – 73.2 µM). Comparing total nitrogen concentrations in Johnson Bay to St. Martin River (consistently the most eutrophic region of these coastal bays), Johnson Bay has increased from 62.5% to 82.5% of the concentrations in St. Martin River during the late 1970s. Though specific sources of nitrogen inputs have not yet been definitively identified, the long-term increase in total nitrogen concentrations occurred despite increased and continued conservation and protection measures. We suggest that investigating nutrient sources can reveal potentially ineffective nutrient policies and that this knowledge can be applied towards other coastal lagoons.  
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  Corporate Author Thesis  
  Publisher ACADEMIC PRESS INC ELSEVIER SCIENCE Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number UMCES @ ajones @ Serial 4192  
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