Marine Biology Commons^™

Quantitative Reef Assessment Studies In Bermuda: A Comparison Of Methods And Preliminary Results, Richard E. Dodge, Alan Logan, Arnfried Antonius

Marine & Environmental Sciences Faculty Articles

To compare in quantitative terms both ecological characteristics of the stony coral fauna at various reef sites in Bermuda and available assessment methodologies, we present a study of four separate methods at each of three reef sites. Three plotless (Intersected-length, Quarter point, Point) and one quadrat (Belt-quadrat) methods were employed. Each technique gave similar results but had inherent advantages and disadvantages which involve trade-offs in quantity and type of information generated and time required for use.

Pooling of method results revealed that total coral coverage was highest at North Rock (26%), intermediate at Three Hill Shoals (17%), and lowest at …

Notes On Recent Changes In Tanaidacean Terminology, Charles G. Messing

Marine & Environmental Sciences Faculty Articles

no abstract available

Mouthpart Morphology And Feeding Strategies Of The Commensal Amphipod, Anamixis Hanseni Stebbing, James Darwin Thomas, George W. Taylor

Marine & Environmental Sciences Faculty Articles

The lack of the information on the biology of the commensal amphipod family Anamixidae prompted investigations into mouthpart ultrastructure, feeding biology, and host specificity of Anamixis hanseni Stebbing, 1897. Earlier investigators presented conflicting reports on the structural composition of the buccal region and feeding modes in anamixids. Scanning electron microscope analysis of A. hanseni showed a complete set of mouthparts to be present, although much modified and reduced, except for the well-developed maxilliped palps. Feeding is not parasitic (piercing and sucking host tissue) as previously believed but is accomplished while A. hanseni rests inside its host. Minute food particles are …

Seasat Altimetry Adjustment Model Including Tidal And Other Sea Surface Effects, Georges Blaha

Marine & Environmental Sciences Faculty Reports

This study is a part of the on-going effort aimed at improved determinations of the earth's gravity field through the adjustment of satellite altimeter data in the short-arc mode. Until recently the key role in such adjustments has been played by GEOS-3 altimeter data. However, SEASAT altimetry is envisioned as providing a more accurate means for addressing this task.

In view of the improved quality of altimeter data and of the corresponding more stringent requirements for the data reduction, several improvements in the existing altimetry model have been designed and are described herein. For example, the criteria have been established …

Growth Characteristics Of Reef-Building Corals Within And External To A Naval Ordinance Range: Vieques, Puerto Rico, Richard E. Dodge

Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures

The skeletal growth of reef·building corals is known to be sensitive to the environment. In particular, high levels of sedimentation and turbidity lead to decreased growth rate, suppressed growth variation, and, ultimately, coral death because of reduced illumination necessary to zooxanthellae and/or increased energy expenditure by the coral animal to remove impacted sediments.

To assess the effect of Naval Ordnance Range usage at Vieques, Puerto Rico, specimens of Montastrea annulariswere collected from reefs adjacent to and removed from the range area. Growth was measured from annual increments revealed by X-radiography of medial slabs of the coral skeletons. Mean growth …

1979 Hurricane Damage To Coral Reefs Of Vieques, Puerto Rico, Richard E. Dodge, William F. Raymond

Marine & Environmental Sciences Faculty Reports

No abstract provided.

Pagurapseudes (Crustacea: Tanaidacea) In Southeastern Florida: Functional Morphology, Post-Marsupial Development, Ecology And Shell Use, Charles Messing

Oceanography Faculty Theses and Dissertations

Members of the genus Pagurapseudes occupy vacant microgastropod shells. Functional and behavioral convergence with paguridean decapods (hermit crabs) is treated using a combination of gross morphological, histological and scanning electron microscopic analyses, as well as observations of living animals. Post-embryological development is described and compared with that of other tanaidaceans. The proposed life history differs from that of other tanaidaceans in several respects and is the first described for any member of the suborder Monokonophora based on investigations using experimentally reared specimens. Variations in a population over the course of 1.5 years are discussed as are apparent habitat preferences. Preferences …

X-Rays Provide Researchers With Views Of Coral Growth Patterns, Richard E. Dodge

Marine & Environmental Sciences Faculty Articles

No abstract provided.

Atmospheric Forcing Of The Bight Of Abaco, Peter M. Smith

HCNSO Student Theses and Dissertations

No abstract provided.

A New Species Of Cerapus Say, 1817 (Crustacea: Amphipoda) From The Northern Gulf Of Mexico, With Notes On Its Ecology, James Darwin Thomas, Richard W. Heard

Marine & Environmental Sciences Faculty Articles

During research in coastal marshes of the Mississippi Delta region in 1975, a large, undescribed amphipod belonging to the genus Cerapus was discovered in tidal channels. This new species, C. benthophilus, is characterized by its large size and 7-12 segmented antennal flagella. Habitat preference is muddy silt bottoms upon which it constructs conspicuous mats or "tufts" of interwoven tubes in shallow coastal bays and marshes from Louisiana to the panhandle areas of northern Florida.

A Redescription Of The Wood-Rasping Amphipod Trophichelura Gomezi Ortiz, 1976 (Cheluridae) From The Florida Keys, With Notes On Its Distribution And Ecology, James Darwin Thomas

Marine & Environmental Sciences Faculty Articles

The wood-rasping amphipod, Tropichelura gomezi Ortiz, 1976, is redescribed from the Florida Keys to include diagnostic characters omitted in the original description. Morphological characters and distributional patterns of T. gomezi are compared with those of the other member of the genus, Tropichelura insulae (Caiman, 1910). Laboratory studies show that T. gomezi defends its burrow entrance from other members of its species, but tolerates the presence of limnoriid isopods with which it cooccurs. A lectotype for Tropichelura insulae is designated .

Serologic And Hematologic Values Of Bison In Colorado, Edward O. Keith, James Ellis, Robert W. Phillips, Maxine M. Benjamin

Marine & Environmental Sciences Faculty Articles

Recent economic and aesthetic interest in North American bison (Bison bison) has lead to increased interstate transport of these animals. Serologic and hematologic standards for bison are needed to detect disease in transported animals as well as within herds. This paper describes variation in blood physiological parameters in bison caused by variations in diet and season. Blood was taken from six bison and analyzed for serologic and hematologic parameters. Significant variation was found in blood urea nitrogen, chloride, cholesterol, creatinine, eosinophil, glucose, hemoglobin, lactic dehydrogenase, leukocyte, packed cell volume, potassium, serum globulin, serum glutamic oxalacetic transaminase, SGPT, and …

Climatic Implications Of Barbados Coral Growth, Richard E. Dodge, Karl K. Turekian, J. Rimas Vaisnys

Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures

Results from a coral growth band analysis utilizing samples of M. annularis from the Recent Barbados reef and from three fossil raised reefs (Barbados I, II, and III dated at 82,000, 105,000, and 125,000 yrs. B.P.) indicate that in the Barbados II collection both average band width and variability were lower than in the other samples. We suggest the climate during formation of the 105,000 yrs. B.P. reef was significantly different than that of the present.

Coral Populations And Growth Patterns: Responses To Sedimentation And Turbidity Associated With Dredging, Richard E. Dodge, J. Rimas Vaisnys

Marine & Environmental Sciences Faculty Articles

Analysis of coral growth patterns and populations in Bermuda reveals that living coral abundance on the reefs of Castle Harbor, a location where extensive dredging occurred during 1941- 1943, is much reduced in comparison to external North-South reefs. Dead corals, sampled in the harbor, have skeletal patterns of growth which are similar and which show a marked decline in growth for several years prior to death. For the brain coral genus Diploria, both D. strigosa and D. labyrinthiformis are fairly evenly represented on contemporary North-South reefs and in the assemblages of dead corals from Castle Harbor, while D. labyrinthiformis, …

Shell Growth In The Scallop Argopecten Irradians. I. Isotope Incorporation With Reference To Diurnal Growth, Alfred P. Wheeler, Patricia Blackwelder, Karl M. Wilbur

Marine & Environmental Sciences Faculty Articles

1. Incorporation of calcium and carbonate into shell has been studied in the scallop Argopecten irradians using ⁴⁵Ca and ¹⁴C-bicarbonate.

2. The incorporation of ⁴⁵Ca and ¹⁴C-carbonate into shell was linear with time after a lag period of 1 to 2 hours. The shell-forming mantle tissue attained a steady state with respect to ⁴⁵Ca in the sea water medium within 2 hours.

3. The molar ratio of ⁴⁵Ca to ¹⁴C-carbonate deposited in shell was not significantly different from unity during 5 hours.

4. The rate of incorporation of ¹⁴C-carbonate into shell was …