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Terrestrial and Aquatic Ecology

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Articles 541 - 549 of 549

Full-Text Articles in Aquaculture and Fisheries

Bibliography Of Diseases And Parasites Of Marine Fish And Shellfish (With Emphasis On Commercially Important Species), Carl J. Sindermann Jun 1970

Bibliography Of Diseases And Parasites Of Marine Fish And Shellfish (With Emphasis On Commercially Important Species), Carl J. Sindermann

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

The literature on diseases and parasites of marine animals has been accumulating at an accelerating rate in recent decades, and at a seemingly geometrical rate in the past few years. Reviews of selected aspects of the subject have appeared (Cheng, 1967; Sindermann, 1966; Sindermann and Rosenfield, 1967). References listed in these papers include a significant, but still a small part, of the available literature. With the proliferation of journals in many languages throughout the world, a complete bibliography, even in a narrow area of research, is almost an impossibility. Then too, the daily appearance of new published information represents an …


Effect Of Domestic Effluent On Two Spring Surveys Of Fishes In Lost Creek, Craighead County, Arkansas, John K. Beadles Jan 1970

Effect Of Domestic Effluent On Two Spring Surveys Of Fishes In Lost Creek, Craighead County, Arkansas, John K. Beadles

Journal of the Arkansas Academy of Science

Lost Creek is representative of deltonic streams of the St. Francis Basin possessing characteristics of being turbid. It has a low flow velocity except during the annual spring rains. Lost Creek meanders approximately 18 km. before receiving effluents and empties into Big Creek approximately 4 km. west of Jonesboro, Arkansas. Five collecting stations were studied in 1966 while six stations were sampled in 1970. Some fishes have been found to tolerate moderate amounts of domestic effluents and it is probable that the two species Lepomis cyanellus and Ictalurus melas, collected within the effluents, were more resistant than the other species …


Biological Studies Of Selected Reaches And Tributaries Of The Colorado River, Nelson Thomas, Federal Water Pollution Control Administration Oct 1968

Biological Studies Of Selected Reaches And Tributaries Of The Colorado River, Nelson Thomas, Federal Water Pollution Control Administration

Publications (WR)

This report fulfills the request of the Colorado River Basin Project, Denver, Colorado, to determine the effects of municipal and industrial wastes on the aquatic life in selected waters of the Colorado River Basin. These studies were conducted with the assistance of personnel from the Colorado River Basin Project.


Check List Of The Marine Invertebrates Of Virginia, Marvin L. Wass Jan 1965

Check List Of The Marine Invertebrates Of Virginia, Marvin L. Wass

Reports

This list is the third revision of a preliminary list compiled by Dr. Willis G. Hewatt in 1959. This latest revision has been shortened by the deletion of most oceanic species. Conversely, a number of estuarine species have been added through further work. Those species known from the published work of the Chesapeake Biological Laboratory, Solomons Island, Maryland, have been included.

For several groups the list should be quite complete; for others, such as the amphipods, of which there are 21 unidentified species in the VIMS collection, much taxonomic work remains. Since many species have been identified only by the …


Preliminary Report: Monolayer Behavior Studies, 1959, Bureau Of Reclamation Jan 1960

Preliminary Report: Monolayer Behavior Studies, 1959, Bureau Of Reclamation

Publications (WR)

During the fall of 1959, monolayer behavior studies were made on two lakes in the southwest; Boulder Basin of Lake Mead, Nevada, and Lake Sahuaro near Phoenix, Arizona.

These studies were made to evaluate the effect of geographical and climatological conditions on movement and behavior of monolayers. The Lake Sahuaro tests also were used to provide data for design and development of improved methods of application and maintenance of a film on this lake in anticipation of full scale, evaporation-reduction tests to be performed there during the summer of I960.

The Lake Mead studies produced the following general points of …


Keys To Virginia Invertebrates, Virginia Institute Of Marine Science Jan 1960

Keys To Virginia Invertebrates, Virginia Institute Of Marine Science

Reports

Classification of algae --

  • Key to the free-swimming animals of jelly (less Hydromedusa) of Chesapeake Bay / H. Cones
  • Key to some Virginia hydroids / D. Calder -- Key to sea anemones of Chesapeake Bay / M. Wass --
  • A key to the species of nemerteans of Virginia / W. McCaul --
  • Key to the polychaetes of Virginia ... / M. Wass, J. Melvin, and J. Kerwin --
  • Key to some marine gastropods of Virginia / J. Kraeuter --
  • Key to the pycnogonida of Virginia / J. McCain-
  • Key to some groups of crustacea / J. Curtis --
  • Key to …


Reports On Freshwater Kill Of Oysters In Rappahannock River Caused By Hurricanes Connie And Diana, Jay D. Andrews Jan 1955

Reports On Freshwater Kill Of Oysters In Rappahannock River Caused By Hurricanes Connie And Diana, Jay D. Andrews

Reports

Contains:

  • Memorandum on the future of oyster planting in the upper Rappahannock
  • Mortality of oysters in the Rappahannock River
  • Physical data, oxygen conditions on the Rappahannock River, James River, York River in August and September 1955.
  • Salinities, Gloucester Point
  • Tests for Dermocystidiium marinum


A Biological Survey Of The Rappahannock River, Virginia, William H. Massmann, Ernest C. Ladd, Henry N. Mccutcheon Jan 1952

A Biological Survey Of The Rappahannock River, Virginia, William H. Massmann, Ernest C. Ladd, Henry N. Mccutcheon

Reports

No abstract provided.


A New Method For The Quantitative Determination Of Plankton Hauls, Henry B. Ward Aug 1895

A New Method For The Quantitative Determination Of Plankton Hauls, Henry B. Ward

Studies from the Zoological Laboratory: The University of Nebraska

Only two methods of estimating the quantity of plankton obtained in a haul of the vertical net are known to me. These two may be called the volumetric and the gravimetric. Both have been used by observers in various parts of the world, but so far as I know have never been comparatively tested in order to ascertain the relative value of results obtained by the two. The experience of the past year has shown some disadvantages in the first method, while the second has certain evident objections which rendered its employment in this case out of the question. In …