Factors affecting enumeration and isolation of actinomycetes from Chesapeake Bay and Southeastern Atlantic Ocean sediments

1975 ◽  
Vol 30 (3) ◽  
pp. 193-201 ◽  
Author(s):  
J. D. Walker ◽  
R. R. Colwell
Keyword(s):  
Atlantic Ocean ◽  
Chesapeake Bay ◽  
Factors Affecting ◽  
Southeastern Atlantic

scholarly journals Tracing water mass mixing and continental inputs in the southeastern Atlantic Ocean with dissolved neodymium isotopes

2020 ◽  
Vol 530 ◽  
pp. 115944 ◽  
Author(s):  
Peer Rahlf ◽  
Ed Hathorne ◽  
Georgi Laukert ◽  
Marcus Gutjahr ◽  
Syee Weldeab ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Water Mass ◽  
Neodymium Isotopes ◽  
Southeastern Atlantic

scholarly journals Factors affecting the abundance of age-0 Atlantic menhaden (Brevoortia tyrannus) in Chesapeake Bay

2016 ◽  
Vol 73 (9) ◽  
pp. 2238-2251 ◽  
Author(s):  
Edward D. Houde ◽  
Eric R. Annis ◽  
Lawrence W. Harding ◽  
Michael E. Mallonee ◽  
Michael J. Wilberg
Keyword(s):  
Environmental Factors ◽  
Primary Production ◽  
Chesapeake Bay ◽  
Primary Productivity ◽  
Atlantic Menhaden ◽  
Strongly Correlated ◽  
Brevoortia Tyrannus ◽  
Factors Affecting ◽  
Chl A ◽  
Low Levels

Abstract The abundance of prerecruit, age-0 Atlantic menhaden (Brevoortia tyrannus), declined to low levels in Chesapeake Bay in the 1990s, after two decades of high abundances in the 1970s–1980s. Environmental factors and trophodynamics were hypothesized to control age-0 menhaden abundance. Data on age-0 menhaden abundance from seine and trawl surveys were analysed with respect to primary productivity, chlorophyll a (Chl a), and environmental variables. Abundance from 1989 to 2004 was strongly correlated with metrics of primary production and euphotic-layer Chl a, especially during spring months when larval menhaden transform into filter-feeding, phytoplanktivorous juveniles. Correlation, principal components, and multiple regression analyses were conducted that identified factors associated with age-0 menhaden abundance. Primary production, Chl a, and variables associated with freshwater flow, e.g. Secchi disk depth and zooplankton assemblages, were correlated with age-0 menhaden abundance. Lengths of age-0 menhaden were positively related to mean levels of annual primary production. However, lengths were negatively related to age-0 menhaden abundance, indicating that growth may be density-dependent. The identified relationships suggest that numbers of menhaden larvae ingressing to Chesapeake Bay and environmental factors that subsequently control primary productivity and food for juveniles within the Bay may control recruitment levels of Atlantic menhaden.

scholarly journals Enhanced dry deposition of nitrogen pollution near coastlines: A case study covering the Chesapeake Bay estuary and Atlantic Ocean coastline

2016 ◽  
Vol 121 (23) ◽  
pp. 14,221-14,238 ◽  
Author(s):  
Christopher P. Loughner ◽  
Maria Tzortziou ◽  
Shulamit Shroder ◽  
Kenneth E. Pickering
Keyword(s):  
Atlantic Ocean ◽  
Chesapeake Bay ◽  
Dry Deposition ◽  
Nitrogen Pollution

scholarly journals Late Pleistocene marginal marine ostracodes from the southeastern Atlantic coastal plain and their paleoenvironmental implications

2010 ◽  
Vol 33 (2) ◽  
pp. 121-173 ◽  
Author(s):  
Thomas M. Cronin
Keyword(s):  
North Carolina ◽  
South Carolina ◽  
Chesapeake Bay ◽  
Late Pleistocene ◽  
Atlantic Coastal Plain ◽  
East Central ◽  
Bay Area ◽  
Pamlico Sound ◽  
Atlantic Coastal ◽  
Southeastern Atlantic

Upper Pleistocene deposits from 21 localities in Maryland, Virginia, South Carolina, North Carolina, and northern Florida yielded 77 ostracode species; virtually all are living today in brackish and marine water. Five late Pleistocene ostracode biofacies signifying lagoonal, oyster bank, estuarine, open sound, and inner sublittoral environments were delineated using Principal Coordinate Analysis. During the late Pleistocene, the Lagoonal and Oyster Bank Biofacies predominated in the Chesapeake Bay area, whereas east-central North Carolina was characterized by an Open Sound Biofacies similar to that in Pamlico Sound today. The Inner Sublittoral Biofacies was present in southeastern Virginia and along the South Carolina coast. The Estuarine Biofacies was found only in the Chesapeake Bay region. Paleoclimates were inferred by a comparison of Holocene and late Pleistocene ostracode zoogeography; apparently the climate during the late Pleistocene was as warm as, and in some areas warmer than at the same latitudes today. Ostracode species are illustrated by scanning electron photomicrographs Cyprideis margarita, Neocaudites atlan-tica, and Microcytherura norfolkensis are described as new species.

The Wiccomiss Indians of Maryland

1938 ◽  
Vol 4 (2) ◽  
pp. 146-152
Author(s):  
William B. Marye
Keyword(s):  
Atlantic Ocean ◽  
Chesapeake Bay ◽  
Delaware Bay ◽  
Eastern Shore ◽  
Freshwater Streams ◽  
Tidal Rivers

That part of Maryland which lies east of the Chesapeake Bay has always, since the founding of the colony (1634), been known as the Eastern Shore; so, too, the Eastern Shore of Virginia. Most of it is a flat country of tidal rivers occupying “drowned valleys” into the heads of which flow sluggish freshwater streams. A low divide, or height of land, separates streams emptying into the Chespeake from streams flowing into the sounds of the Atlantic Ocean, or into Delaware Bay.

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