scholarly journals Oyster Aquaculture Impacts on Sediment Nitrogen Cycling and Efficacy as a Nutrient Bioextraction Tool in a Tributary of Chesapeake Bay

2015 ◽  
Author(s):  
Abby Lunstrum
Water ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1961 ◽  
Author(s):  
Richard Tian

The Chester River, a tributary of Chesapeake Bay, provides critical habitats for numerous living species and oyster aquaculture, but faces increasing anthropogenic stresses due to excessive nutrient loading and hypoxia occurrence. An application of the Integrated Compartment Water Quality Model (ICM), coupled with the Finite-Volume Community Ocean Model (FVCOM), was carried out to study the controlling mechanisms and interannual variability in hypoxia occurrence from 2002 to 2011. Our study shows that hypoxia occurs mostly in the main stem in July, followed by August and June. On an interannual scale, 2005 had the highest hypoxia occurrence with an accumulative hypoxia volume of about 10 km3-days, whereas 2008 had the lowest occurrence with an accumulative hypoxia volume of about 1 km3-days. Nutrient loading is the predominant factor in determining the intensity and interannual variability in hypoxia in the Chester River estuary, followed by stratification and saltwater intrusion. Phosphorus has been found to be more efficient in controlling hypoxia occurrence than nitrogen due to their different limiting extent. On a local scale, the Chester River estuary is characterized by several meanders, and at certain curvatures helical circulation is formed due to centrifugal forces, leading to better reaeration and dissolved oxygen (DO) supply to the deeper layers. Our study provides valuable information for nutrient management and restoration efforts in the Chester River.


2015 ◽  
Vol 85 ◽  
pp. 103-120 ◽  
Author(s):  
Timothy R. Williamson ◽  
David R. Tilley ◽  
Elliot Campbell

PLoS ONE ◽  
2019 ◽  
Vol 14 (11) ◽  
pp. e0224768
Author(s):  
Jessica S. Turner ◽  
M. Lisa Kellogg ◽  
Grace M. Massey ◽  
Carl T. Friedrichs

PLoS ONE ◽  
2018 ◽  
Vol 13 (5) ◽  
pp. e0197753 ◽  
Author(s):  
Carter S. Smith ◽  
Minako Ito ◽  
Mizuho Namba ◽  
Masahiro Nakaoka

2020 ◽  
Vol 187 ◽  
pp. 116431 ◽  
Author(s):  
Hao Jiang ◽  
Wenlu Lan ◽  
Tianshen Li ◽  
Zhifang Xu ◽  
Wenjing Liu ◽  
...  

2015 ◽  
Vol 68 ◽  
pp. 35-42 ◽  
Author(s):  
Nicholas E. Ray ◽  
Ji Li ◽  
Patrick C. Kangas ◽  
Daniel E. Terlizzi

Itinerario ◽  
2000 ◽  
Vol 24 (2) ◽  
pp. 146-169 ◽  
Author(s):  
Michael Leroy Oberg

In August of 1587 Manteo, an Indian from Croatoan Island, joined a group of English settlers in an attack on the native village of Dasemunkepeuc, located on the coast of present-day North Carolina. These colonists, amongst whom Manteo lived, had landed on Roanoke Island less than a month before, dumped there by a pilot more interested in hunting Spanish prize ships than in carrying colonists to their intended place of settlement along the Chesapeake Bay. The colonists had hoped to re-establish peaceful relations with area natives, and for that reason they relied upon Manteo to act as an interpreter, broker, and intercultural diplomat. The legacy of Anglo-Indian bitterness remaining from Ralph Lane's military settlement, however, which had hastily abandoned the island one year before, was too great for Manteo to overcome. The settlers found themselves that summer in the midst of hostile Indians.


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