Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Publication Year
Articles 541 - 570 of 587
Full-Text Articles in Physical Sciences and Mathematics
Vertical Distribution Of Estuarine Phytoplankton In The Surface Microlayer And At One Meter, And Fluctuations In Abundance Caused By Surface Adsorption Of Monomolecular Films, Victoria R. Gibson
Vertical Distribution Of Estuarine Phytoplankton In The Surface Microlayer And At One Meter, And Fluctuations In Abundance Caused By Surface Adsorption Of Monomolecular Films, Victoria R. Gibson
Dissertations, Theses, and Masters Projects
A quantitative comparison of the phytoplankton in the surface microlayer of an estuary and that a depth of one meter was made using a Garrett-type screen and a Frautschy bottle for sample collection. Results showed that the surface microlayer contained a significantly greater number of phytoplankton cells than the water at one meter. Species diversity at the surface tended to be somewhat lower than one meter, due to a greater number of individuals of the dominant species. Investigation revealed that the presence of a monomolecular film of slick material absorbed onto the water surface resulted in a decrease in the …
Benthic Infauna Of Eelgrass, Zostera Marina, Beds, Robert Joseph Orth
Benthic Infauna Of Eelgrass, Zostera Marina, Beds, Robert Joseph Orth
Dissertations, Theses, and Masters Projects
The infauna of Zostera beds in the Chesapeake Bay-York River estuary and Chincoteague Bay was sampled in March and July using a corer. Sediments were fine sand or very fine sand. Sorting of sediments varied from poorly sorted to moderately well-sorted and was related to the density of Zostera at the respective stations. A total of 17 macroinvertebrate taxa was collected. Species abundance decreased up the estuary and there was a significant interaction in the number of species between stations and seasons. Faunal similarity of the areas sampled, as measured by three indices, indicated that the infauna of most Zostera …
Age, Growth, And Mortality Of The White Perch, Morone Americana (Gmelin), In The James And York Rivers, Virginia, Richard Alan St. Pierre
Age, Growth, And Mortality Of The White Perch, Morone Americana (Gmelin), In The James And York Rivers, Virginia, Richard Alan St. Pierre
Dissertations, Theses, and Masters Projects
More than 750 white perch, Morone americana, were collected from each of two major tributaries of southern Chesapeake Bay to compare the age structures, growth rates, and mortality rates of the two populations.The James River is characterized by heavy domestic and industrial pollution, whereas the York River is only slightly polluted. Maximum ages determined by scale analysis were 7 and 10 years for males and females respectively in each river. Males and females from the James River were larger than those from the York up to ages IV and V, respectively. Older fish were larger in the York . Females …
Survival And Activity Of The Oyster Drill, Urosalpinx Cinerea (Say), Under Conditions Of Fluctuating Salinity, Arthur Zachary
Survival And Activity Of The Oyster Drill, Urosalpinx Cinerea (Say), Under Conditions Of Fluctuating Salinity, Arthur Zachary
Dissertations, Theses, and Masters Projects
No abstract provided.
The Soft Bottom Macrobenthic Community Of Arthur Harbor, Antarctica, James K. Lowry
The Soft Bottom Macrobenthic Community Of Arthur Harbor, Antarctica, James K. Lowry
Dissertations, Theses, and Masters Projects
No abstract provided.
Methods Of Distinguishing Larval Alewife (Alosa Pseudoharengus) From Larval Blueback Herring (A Aestivalis), James Ross Chambers
Methods Of Distinguishing Larval Alewife (Alosa Pseudoharengus) From Larval Blueback Herring (A Aestivalis), James Ross Chambers
Dissertations, Theses, and Masters Projects
No abstract provided.
Faunal Variation On Pelagic Sargassum, Michael L. Fine
Faunal Variation On Pelagic Sargassum, Michael L. Fine
Dissertations, Theses, and Masters Projects
No abstract provided.
Aspects Of The Ecology, Life History, And Host-Parasite Relationship Of Loxothylacus Panopaei (Sacculinidae) In Chesapeake Bay, Seth Jerome Daugherty
Aspects Of The Ecology, Life History, And Host-Parasite Relationship Of Loxothylacus Panopaei (Sacculinidae) In Chesapeake Bay, Seth Jerome Daugherty
Dissertations, Theses, and Masters Projects
No abstract provided.
Taxonomy And Distribution Of Western Atlantic Bittium (Gastropoda: Mesogastropoda), Ella May Thomson Wulff
Taxonomy And Distribution Of Western Atlantic Bittium (Gastropoda: Mesogastropoda), Ella May Thomson Wulff
Dissertations, Theses, and Masters Projects
The genus Bittium in the Western Atlantic was studied to determine the number and distribution of extant species. Shells of adults and juveniles collected from Brazil to Canada, including the type specimens of B. virginicum, were examined and compared on the basis of length, lengthwidth ratio and varix presence or absence. Although intergrades of B. alternatum and B. varium probably existed in the middle Chesapeake Bay, along the Atlantic shores of the Delmarva Peninsula and New Jersey, and in western Long Island Sound prior to 1940, B. alternatum is now found from Shark River, New Jersey, northward and B. varium …
Distribution, Growth And Behavior Of The Spotted Hake In The Chesapeake Bight, Charles A. Barans
Distribution, Growth And Behavior Of The Spotted Hake In The Chesapeake Bight, Charles A. Barans
Dissertations, Theses, and Masters Projects
No abstract provided.
Age And Growth Of The Blueback Herring Alosa Aestivalis (Mitchill), Kenneth Lee Beal
Age And Growth Of The Blueback Herring Alosa Aestivalis (Mitchill), Kenneth Lee Beal
Dissertations, Theses, and Masters Projects
No abstract provided.
The Ecological Significance Of A Ctenophore, Mnemiopsis Leidyi (A. Aggasiz), In A Fish Nursery Ground, Victor G. Burrell
The Ecological Significance Of A Ctenophore, Mnemiopsis Leidyi (A. Aggasiz), In A Fish Nursery Ground, Victor G. Burrell
Dissertations, Theses, and Masters Projects
No abstract provided.
Age And Growth Of The Striped Searobin, John D. Mceachran
Age And Growth Of The Striped Searobin, John D. Mceachran
Dissertations, Theses, and Masters Projects
No abstract provided.
Age And Growth Of The Northern Searobin Prionotus Carolinus (Linnaeus), Robert Seng-Pui Wong
Age And Growth Of The Northern Searobin Prionotus Carolinus (Linnaeus), Robert Seng-Pui Wong
Dissertations, Theses, and Masters Projects
No abstract provided.
Effects Of Small Quantities Of Cornstarch And Dextrose On The Oyster, Crassostrea Virginica (Gmelin), Kenneth Wayne Turgeon
Effects Of Small Quantities Of Cornstarch And Dextrose On The Oyster, Crassostrea Virginica (Gmelin), Kenneth Wayne Turgeon
Dissertations, Theses, and Masters Projects
No abstract provided.
Distribution Of The Midwater Fishes Of The Gulf Of California, Bruce Hammond Robison
Distribution Of The Midwater Fishes Of The Gulf Of California, Bruce Hammond Robison
Dissertations, Theses, and Masters Projects
No abstract provided.
Guide To Estuarine And Inshore Bivalves Of Virginia, Donna Demoranville Turgeon
Guide To Estuarine And Inshore Bivalves Of Virginia, Donna Demoranville Turgeon
Dissertations, Theses, and Masters Projects
No abstract provided.
Studies Of Labyrinthula Spp In Culture, James P. Amon
Studies Of Labyrinthula Spp In Culture, James P. Amon
Dissertations, Theses, and Masters Projects
No abstract provided.
The Effect Of Temperature On The Salinity-Induced Changes In The Free Amino Acid Pool Of Mya Arenaria, William D. Dupaul
The Effect Of Temperature On The Salinity-Induced Changes In The Free Amino Acid Pool Of Mya Arenaria, William D. Dupaul
Dissertations, Theses, and Masters Projects
No abstract provided.
Intertidal Zonation Of Marine Algae At Gloucester Point, Virginia, Barry Lee Wulff
Intertidal Zonation Of Marine Algae At Gloucester Point, Virginia, Barry Lee Wulff
Dissertations, Theses, and Masters Projects
A study was made of the intertidal zone of aged wooden pilings from February to June, 1967 at Gloucester Point Virginia,located in the lower York River estuary. Twenty-six species of marine algae were found grouped into three floristic zones.
Nine species were limited to below mean low water, whichialL.rlted the lowest cone. In this group there were six Rhodophyta and three Chlorophyta. Seven floral levels comprised the middle floristic zone between mean low water to a height of 74 cm above mean low water. These levels ere based on uppermost range extensions of sixteen species (six Cyanophyta, two Rhodophyta,one Phaeophyta …
Aids For Identification Of Bivalve Larvae Of Virginia, Paul Chanley
Aids For Identification Of Bivalve Larvae Of Virginia, Paul Chanley
Dissertations, Theses, and Masters Projects
No abstract provided.
The Distribution And Ecology Of The Gammaridea (Crustacea, Amphipoda) Of The Lower Chesapeake Estuaries, James B. Feeley
The Distribution And Ecology Of The Gammaridea (Crustacea, Amphipoda) Of The Lower Chesapeake Estuaries, James B. Feeley
Dissertations, Theses, and Masters Projects
No abstract provided.
Classification And Structures Of The Tidal Marshes Of The Poropotank River, Virginia, James Arthur Kerwin
Classification And Structures Of The Tidal Marshes Of The Poropotank River, Virginia, James Arthur Kerwin
Dissertations, Theses, and Masters Projects
No abstract provided.
Ecology Of Marine Invertebrate Fouling Organisms In Hampton Roads, Virginia, Dale R. Calder
Ecology Of Marine Invertebrate Fouling Organisms In Hampton Roads, Virginia, Dale R. Calder
Dissertations, Theses, and Masters Projects
Investigations were conducted from 15 May 1964 to 3 January 1966 to determine the incidence, distribution, and abundance of marine invertebrate fouling organisms in Hampton Roads, Virginia. Dredging carried out at seven stations revealed that benthic organisms most likely to be involved in fouling were Thuiaria argentea, Alcyonidium verrilli, Microciona prolifera, Amathia vidovici, and Aeverrillia armata. All of these species occur in the Pier 12 berthing area of the Norfolk Naval Base, with. !· argentea and~- verrilli being most abundant. Detailed studies of the organisms attaching to asbestos fiber test panels were made at Pier 12 of the Naval Base. …
Descriptions Of Fecal Pellets Of Some Common Invertebrates In The Lower York River And Lower Chesapeake Bay, Virginia, John N. Kraeuter
Descriptions Of Fecal Pellets Of Some Common Invertebrates In The Lower York River And Lower Chesapeake Bay, Virginia, John N. Kraeuter
Dissertations, Theses, and Masters Projects
No abstract provided.
Parasitic Copepods Of Some Antarctic And New Zealand Fishes, David E. Zwerner
Parasitic Copepods Of Some Antarctic And New Zealand Fishes, David E. Zwerner
Dissertations, Theses, and Masters Projects
No abstract provided.
The Metabolism Of Krebs Cycle Intermediates And Malonate By Eggs And Early Embryonic Stages Of Arbacia Punctulata, Russell Chancellor Addison
The Metabolism Of Krebs Cycle Intermediates And Malonate By Eggs And Early Embryonic Stages Of Arbacia Punctulata, Russell Chancellor Addison
Dissertations, Theses, and Masters Projects
No abstract provided.
A Study Of The Scup (Stenotomus Chrysops), Based On Data Obtained From Catches Of The 1963-64 Winter Trawl Fishery, Wallace Gibb Smith
A Study Of The Scup (Stenotomus Chrysops), Based On Data Obtained From Catches Of The 1963-64 Winter Trawl Fishery, Wallace Gibb Smith
Dissertations, Theses, and Masters Projects
No abstract provided.
The Effects Of Environmental Salinity On Free Amino Acids Of Crassostrea Virginica, Maurice Patrick Lynch
The Effects Of Environmental Salinity On Free Amino Acids Of Crassostrea Virginica, Maurice Patrick Lynch
Dissertations, Theses, and Masters Projects
No abstract provided.
Effect Of Environmental Salinity On The Amino Acids Of Balanus Improvisus Darwin, Joan L. Faunce
Effect Of Environmental Salinity On The Amino Acids Of Balanus Improvisus Darwin, Joan L. Faunce
Dissertations, Theses, and Masters Projects
No abstract provided.