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Articles 5731 - 5760 of 7426

Full-Text Articles in Marine Biology

Environmental Indicator Report: Species And Habitats, Phil Trowbridge Apr 2003

Environmental Indicator Report: Species And Habitats, Phil Trowbridge

PREP Reports & Publications

During the fall and winter of 2001-2002, the New Hampshire Estuaries Project’s Technical Advisory Committee (TAC) developed a suite of environmental indicators to track progress toward the NHEP’s management goals and objectives. These indicators were fully described in terms of their performance criteria, statistical methods, and measurable goals in the NHEP’s Monitoring Plan, which was most recently updated in March 2003 (NHEP, 2003). The next step is to use these indicators to produce an updated “State of the Estuaries” report by mid-2003. The TAC decided to break this task into three sections: shellfish indicators in the fall of 2002; water …


Past Stony Coral Growth (Extension) Rates On Reefs Of Broward County, Florida: Possible Relationships With Everglades Drainage, Richard E. Dodge, Kevin P. Helmle Apr 2003

Past Stony Coral Growth (Extension) Rates On Reefs Of Broward County, Florida: Possible Relationships With Everglades Drainage, Richard E. Dodge, Kevin P. Helmle

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

No abstract provided.


Restoration Of Coral Reef Habitats Within The National Park System, Jim Tilmant, Linda Canzanelli, Rick Clark, Richard Curry, Bruce Graham, Monika Mayr, Alison L. Moulding, Robert Mulcahy, Shay Viehman, Tamara Whittington Apr 2003

Restoration Of Coral Reef Habitats Within The National Park System, Jim Tilmant, Linda Canzanelli, Rick Clark, Richard Curry, Bruce Graham, Monika Mayr, Alison L. Moulding, Robert Mulcahy, Shay Viehman, Tamara Whittington

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

No abstract provided.


Tracking Bacterial Pollution Sources In Hampton Harbor, Stephen H. Jones, Natalie Landry Apr 2003

Tracking Bacterial Pollution Sources In Hampton Harbor, Stephen H. Jones, Natalie Landry

PREP Reports & Publications

Fecal-borne microorganisms impact many shellfish-growing waters in coastal New Hampshire. Watersheds are often subject to fecal contamination by a variety of sources and efforts to improve water quality are often limited because of lack of information on which contaminant sources are most significant. Ribotyping and other microbial source tracking methods are useful new tools for providing information on the sources of fecal-borne bacterial contaminants in surface waters. New Hampshire has areas of abundant oyster (Crassostrea virginica) and clam (Mya arenaria) resources, the latter being most important in Hampton Harbor. In this study, Escherichia coli isolates (bacteria colonies) were obtained from …


Spring 2003, Nsu Oceanographic Center Apr 2003

Spring 2003, Nsu Oceanographic Center

Currents

No abstract provided.


Tracking Bacterial Pollution Sources In Stormwater Pipes, Stephen H. Jones Apr 2003

Tracking Bacterial Pollution Sources In Stormwater Pipes, Stephen H. Jones

PREP Reports & Publications

The New Hampshire Department of Environmental Services (DES) conducted two rounds of wet weather sampling in the Hampton Harbor watershed during 2002. Samples were collected from stormdrains, tributaries, and harbor stations for bacteria and flow in order to calculate bacteria loads. This information was needed to prioritize pollution sources as part of a Total Maximum Daily Load (TMDL) study of bacteria in Hampton Harbor (Trowbridge, 2003). Two of the 16 monitored stormdrain pipes were selected for microbial source determination using ribotype profiling. Stormdrain pipe selection was based on the bacteria loading data from the first wet weather sampling that occurred …


Chlorophyll Dispersal By Eddy-Eddy Interactions In The Gulf Of Mexico, M. Toner, A. D. Kirwan, A. C. Poje, L. H. Kantha, Frank E. Muller-Karger, C. K. R. T. Jones Apr 2003

Chlorophyll Dispersal By Eddy-Eddy Interactions In The Gulf Of Mexico, M. Toner, A. D. Kirwan, A. C. Poje, L. H. Kantha, Frank E. Muller-Karger, C. K. R. T. Jones

Marine Science Faculty Publications

A Lagrangian analysis of the transport and dispersal of plumes observed in satellite‐derived ocean color images was conducted using a data‐assimilating model of the Gulf of Mexico. The interaction between pervasive cyclonic and anticyclonic eddies in the Gulf generated advective paths that connect remote shelf regions. These paths aligned remarkably well with the plume events recorded with the chlorophyll‐a ocean color product from SeaWiFS. Two such events were studied. In one event material was transported in a thin strip between the northern wall of the Loop Current and an adjacent cyclone, connecting the eastern Campheche shelf (off the Yucatan Peninsula) …


Front Matter, Southeastern Fishes Council Apr 2003

Front Matter, Southeastern Fishes Council

Southeastern Fishes Council Proceedings

No abstract provided.


Minutes, Business Meeting, Southeastern Fishes Council Apr 2003

Minutes, Business Meeting, Southeastern Fishes Council

Southeastern Fishes Council Proceedings

No abstract provided.


Number 45 (April 2003), Southern Fishes Council Apr 2003

Number 45 (April 2003), Southern Fishes Council

Southeastern Fishes Council Proceedings

(April 2003) - An Annotated List of Fishes Known from the Dan River in Virginia and North Carolina (Blue Ridge/Piedmont Provinces). By Fred C. Rohde, Rudolf G. Arndt, David J. Coughlan, and Scott M. Smith

Minutes, Business Meeting, 28th Annual Meeting, Southeastern Fishes Council

Regional Southeastern Fishes Council Reports


An Annotated List Of The Fishes Known From The Dan River In Virginia And North Carolina (Blue Ridge/Piedmont Provinces), Fred C. Rohde, Rudolf G. Arndt, David J. Coughlan, Scott M. Smith Apr 2003

An Annotated List Of The Fishes Known From The Dan River In Virginia And North Carolina (Blue Ridge/Piedmont Provinces), Fred C. Rohde, Rudolf G. Arndt, David J. Coughlan, Scott M. Smith

Southeastern Fishes Council Proceedings

No abstract provided.


Regional Southeastern Fishes Council Reports, Southeastern Fishes Council Apr 2003

Regional Southeastern Fishes Council Reports, Southeastern Fishes Council

Southeastern Fishes Council Proceedings

No abstract provided.


Evaluation Of Automated Ribotyping As A Tool For Bacterial Source Tracking In Aquatic Environments, Tracy L. Idocks Apr 2003

Evaluation Of Automated Ribotyping As A Tool For Bacterial Source Tracking In Aquatic Environments, Tracy L. Idocks

USF Tampa Graduate Theses and Dissertations

An Escherichia coli ribotype profile library was created for the Tampa Bay watershed for application to bacterial source tracking of human or non-human fecal contamination to the bay and surrounding rivers. Bacterial source tracking uses a variety of methods to identify the source of fecal contamination, not just the quantity of the indicator bacteria present, allowing implementation of effective management practices. The 700 confirmed E. coli isolate library was equally distributed among four sources: human, bird, dog and cow. The library was tested for applicability for source tracking within the Tampa Bay watershed. The DuPont Qualicon RiboPrinter® Microbial Characterization System, …


Assessment Of Current And New Methods For Investigating The Occurrence Of Enteric Pathogens In Ambient Waters And Water Sources For Rehydration Of A Floridan Wetland, Walter Quintero-Betancourt Apr 2003

Assessment Of Current And New Methods For Investigating The Occurrence Of Enteric Pathogens In Ambient Waters And Water Sources For Rehydration Of A Floridan Wetland, Walter Quintero-Betancourt

USF Tampa Graduate Theses and Dissertations

Water quality assessment is currently used for determining the risks from contamination with waterborne pathogenic microorganisms. The public health. significance of such microorganisms cannot be fully understood without the application of reliable environmental monitoring techniques that provide efficient recovery as well as information on the infectious potential of specific isolates. This research was carried out to assess the analytical performance of current and new methods for investigating the occurrence of waterborne Cryptosporidium oocysts in samples of surface water, groundwater and reclaimed water used for public access irrigation in the State of Florida.

Method 1623 of the U.S Environmental Protection Agency …


Male Reproductive Dynamics In The Caribbean Spiny Lobster Panulirus Argus, Jamie S. Heisig Apr 2003

Male Reproductive Dynamics In The Caribbean Spiny Lobster Panulirus Argus, Jamie S. Heisig

Biological Sciences Theses & Dissertations

The population size structure of the Caribbean Spiny Lobster, Panulirus argus, in the Florida Keys, Florida (USA) has undergone a dramatic shift as a result of fishing pressure on the large individuals of the population. Male lobsters are affected most by fishing because of sexual dimorphism in size and other studies have shown that male size has direct impacts on reproductive output (i.e., number of fertilized eggs/clutch) that are independent of female size. To assess more precisely the impact of male size on fertilization success, I conducted laboratory experiments and field observations to examine various male reproductive attributes over …


The Ecological Ramifications Of Disease And Density In The Caribbean Spiny Lobster, Panulirus Argus, Donald C. Behringer Jr. Apr 2003

The Ecological Ramifications Of Disease And Density In The Caribbean Spiny Lobster, Panulirus Argus, Donald C. Behringer Jr.

Biological Sciences Theses & Dissertations

In 1999, I discovered the first virus known to be pathogenic to any species of lobster. HLV-PA is a pathogenic herpes-like virus that infects juvenile Caribbean spiny lobster, Panulirus argus, in the waters off south Florida (USA), and it alters the behavior and ecology of this species in fundamental ways. Gross signs of HLV-PA infection are lethargy, morbidity, cessation of molting, and discolored, “milky” hemolymph that does not clot. HLV-PA infects the hemocytes of host lobsters, specifically the hyalinocytes and semi-granulocytes, but not the granulocytes. When hemolymph from infected donors was injected into healthy juvenile lobsters, 90% of the …


Shellfish Outreach Project, Dyanna I. Smith Mar 2003

Shellfish Outreach Project, Dyanna I. Smith

PREP Reports & Publications

The purpose of the Shellfish Outreach project was to disseminate educational information to the greater seacoast community on the value of aquaculture, status and opportunities in shellfishing, and hands-on local conservation strategies in an exciting visual and experiential manner.

The entire project was designed to combine three primary methods of distributing information to the public: traveling programs, curriculum design, and field experience. Audiences for all three programs were to receive maps, updated shellfish-related information, and/or details promoting environmentally sound aquaculture practices. Subject matter covered during these programs was designed to focus on basic shellfish biology and natural history, the history …


Biology And Ecologyof Epigean Crayfish That Inhabit Everglades Environments Procambarus Alleni (Faxon) And Procambarus Fallax (Hagen), Peggy G. Vanarman Mar 2003

Biology And Ecologyof Epigean Crayfish That Inhabit Everglades Environments Procambarus Alleni (Faxon) And Procambarus Fallax (Hagen), Peggy G. Vanarman

HCNSO Student Theses and Dissertations

Two species of epigean crayfish, Procambarus alleni (the Everglades crayfish) and Procambarus fallax (slough crayfish), may be keystone species that inhabit wetlands in south Florida and the Everglades. Recent field studies showed that although these two species occur in sympatric and syntopic distribution, Everglades crayfish prefer shallow water and short hydroperiod conditions, whereas slough crayfish prefer areas that are more permanently flooded (Hendrix 2000). Slough crayfish have invaded some areas within the range occupied by Everglades crayfish, and may be the more successful competitor. Because of their critical role throughout the trophic structure of Everglades wetlands, shifts in relative abundance …


Blue Crab Larval Dispersion And Retention In The Mississippi Bight: Testing The Hypothesis, Harriet M. Perry, Donald R. Johnson, Kirsten M. Larsen, Christine Trigg, Fred Vukovich Mar 2003

Blue Crab Larval Dispersion And Retention In The Mississippi Bight: Testing The Hypothesis, Harriet M. Perry, Donald R. Johnson, Kirsten M. Larsen, Christine Trigg, Fred Vukovich

Faculty Publications

An hypothesis relating physical forcing to dispersion and retention of blue crab larvae was tested in the area of the Mississippi Bight. Seasonal circulation patterns derived from a 3-dimensional, primitive equation, sigma-coordinate model of the Gulf of Mexico (GOM) indicate favorable conditions for offshore dispersal of larvae and their return to nearshore waters as megalopae occur between April and October. Large basin-scale events, such as Loop Current intrusions into the GOM with spin-off eddy generation and anomalies in average wind stress may interrupt this circulation pattern and change the settlement success rate. Meteorological and hydrological factors thought to influence settlement …


Identifying Nursery Areas Used By Inner Bay And Oceanic Pink Snapper ( Pagrus Auratus) To The Effect Of Prawn Trawling On Inner Bay Snapper Stocks - Final Report For Frdc Project 2001/061, D. J. Gaughan, Michael J. Moran, Melinda M. Ranaldi, John R. Watling Mar 2003

Identifying Nursery Areas Used By Inner Bay And Oceanic Pink Snapper ( Pagrus Auratus) To The Effect Of Prawn Trawling On Inner Bay Snapper Stocks - Final Report For Frdc Project 2001/061, D. J. Gaughan, Michael J. Moran, Melinda M. Ranaldi, John R. Watling

Fisheries Research Contract Reports

Final Report for FRDC Project 2001/061

Pink snapper (Pagrus auratus) is the main commercial and recreational finfish (Kailola et al., 1993) in the Shark Bay region. Pink snapper are distributed along much of the temperate and tropical coasts of Western Australia from east of Esperance on the south coast to north of Shark Bay on the west (Paulin 1990). Previous research using genetics (Johnson et al. 1986), tagging (Moran et al. 2004), and otolith microchemistry (Edmonds et al., 1989, 1999) have shown that pink snapper from the innermost parts of Shark Bay do not mix with the ocean fish

Juvenile …


Soft-Sediment Recruitment Dynamics Of Early Blue Crab Stages In Mississippi Sound, Chet F. Rakocinski, Harriet M. Perry, Michael A. Abney, Kristen M. Larsen Mar 2003

Soft-Sediment Recruitment Dynamics Of Early Blue Crab Stages In Mississippi Sound, Chet F. Rakocinski, Harriet M. Perry, Michael A. Abney, Kristen M. Larsen

Faculty Publications

In order to understand the recruitment dynamics of early blue crabs, it is necessary to sample quantitatively across early stages and habitats at appropriate spatio-temporal scales. Few studies of early blue crab recruitment have considered the potential role of soft-sediment habitat or directly related megalopal supply to local densities of early stages. During a 7-wk peak recruitment period, fluctuations in early stages of blue crabs from settlement collectors were significantly cross-correlated between two sites separated by 7.5 km, showing connectivity on this large spatial scale. Moreover, numbers of megalopae from settlement collectors were directly correlated with densities of early juveniles …


Habitat Utilization By Bottlenose Dolphins (Tursiops Truncatus) In Biscayne Bay, Florida, Christine A. Hudak Feb 2003

Habitat Utilization By Bottlenose Dolphins (Tursiops Truncatus) In Biscayne Bay, Florida, Christine A. Hudak

HCNSO Student Theses and Dissertations

Bottlenose dolphins (Tursiops truncatus) exhibit variable distribution patterns, depending upon their geographic location. Habitat utilization patterns in Biscayne Bay, Florida, were examined using the Biscayne Bay Bottlenose Dolphin Photo-ID database obtained from the National Oceanic and Atmospheric Administration (NOAA) Southeast Fisheries Science Center (SEFSC) Miami Laboratory. Habitat coverages in Biscayne Bay were obtained from the Atlas of Marine Resources Version 1.3B CD and the Biscayne Bay National Park CD. Dolphin sightings were overlaid on the habitat coverages using GIS Arcview software.

The effects of habitat, season, behavior, zone (sectioned area of Biscayne Bay), and depth on patterns …


A Loop Current Intrusion Case Study On The West Florida Shelf, Ruoying He, Robert H. Weisberg Feb 2003

A Loop Current Intrusion Case Study On The West Florida Shelf, Ruoying He, Robert H. Weisberg

Marine Science Faculty Publications

The Gulf of Mexico Loop Current intruded upon the West Florida continental shelf in June 2000. In situ currents and hydrography along with satellite temperature and altimetry measurements are used to describe this event and its effects on the shelf. A strong southward current is observed to flow along the shelf slope seaward of the intruded water boundary. This current transported cold, nutrient-rich water from the north, thereby producing anomalous hydrographic features near the shelf break (80-m isobath). An array of moored velocity profilers reveals that the currents landward of the intruded water are independent of the Loop Current and …


Growing Greener Initiative, City Of Dover, Nh Jan 2003

Growing Greener Initiative, City Of Dover, Nh

PREP Reports & Publications

Using funds from this grant, the City of Dover Open Lands Committee worked in conjunction with the Planning Department and Conservation Commission to plan, promote and present a series of workshops. These workshops were designed to educate decision- makers and residents about the economic, aesthetic, and environmental benefits of open space. In addition, the Dover Open Lands Committee developed two brochures and a display to publicize the Open Lands Committee and to encourage further citizen participation.


Abundance Of Amino Sugars And Peptidoglycan In Marine Particulate And Dissolved Organic Matter, Ronald Benner, Karl Kaiser Jan 2003

Abundance Of Amino Sugars And Peptidoglycan In Marine Particulate And Dissolved Organic Matter, Ronald Benner, Karl Kaiser

Faculty Publications

No abstract provided.


Field Evaluation Of Wet Weather Bacteria Loading In Hampton/Seabrook Harbor, Phil Trowbridge Jan 2003

Field Evaluation Of Wet Weather Bacteria Loading In Hampton/Seabrook Harbor, Phil Trowbridge

PREP Reports & Publications

During 2002, in and around Hampton Harbor, the New Hampshire Department of Environmental Services (DES) conducted two rounds of wet weather sampling of stormdrains, tributaries, and harbor stations for bacteria and flow in order to calculate bacteria loads. This information was needed to prioritize pollution sources as part of a Total Maximum Daily Load (TMDL) study of bacteria in Hampton/Seabrook Harbor.


Age And Growth Estimates Of The Winter Skate (Leucoraja Ocellata) In The Western Gulf Of Maine, James A. Sulikowski, Michael D. Morin, Seung H. Suk, William Huntting Howell Jan 2003

Age And Growth Estimates Of The Winter Skate (Leucoraja Ocellata) In The Western Gulf Of Maine, James A. Sulikowski, Michael D. Morin, Seung H. Suk, William Huntting Howell

Biological Sciences

The northwest Atlantic population of thorny skates (Amblyraja radiata) inhabits an area that ranges from Greenland and Hudson Bay, Canada, to South Carolina. Despite such a wide range, very little is known about most aspects of the biology of this species. Recent stock assessment studies in the northeast United States indicate that the biomass of the thorny skate is below the threshold levels mandated by the Sustainable Fisheries Act. In order to gain insight into the life history of this skate, we estimated age and growth for thorny skates, using vertebral band counts from 224 individuals ranging in size from …


An Ecosystem-Based Approach To Management: Using Individual Behaviour To Predict The Indirect Effects Of Antarctic Krill Fisheries On Penguin Foraging, Suzanne H. Alonzo, Paul Switzer, Marc Mangel Jan 2003

An Ecosystem-Based Approach To Management: Using Individual Behaviour To Predict The Indirect Effects Of Antarctic Krill Fisheries On Penguin Foraging, Suzanne H. Alonzo, Paul Switzer, Marc Mangel

Faculty Research & Creative Activity

Summary 1. Changes in species' abundance and distributions caused by human disturbances can have indirect effects on other species in a community. Although ecosystem approaches to management are becoming increasingly prevalent, they require a fuller understand- ing of how individual behaviour determines interactions within and between species. 2. Ecological interactions involving krill are of major importance to many species within the Antarctic. Despite extensive knowledge of the ecosystem that they occupy, there is still incomplete understanding of the links between species and the effect of environmental conditions on these interactions. In this study, we extended a behavioural model used previously …


The Comparative Energetics And Growth Strategies Of Sympatric Antarctic And Sub Antarctic Fur Seal Pups, At Iles Crozet, J Py Arnould, S P. Luque, C Guinet, D P. Costa, J Kingston, Scott A. Shaffer Jan 2003

The Comparative Energetics And Growth Strategies Of Sympatric Antarctic And Sub Antarctic Fur Seal Pups, At Iles Crozet, J Py Arnould, S P. Luque, C Guinet, D P. Costa, J Kingston, Scott A. Shaffer

Faculty Publications, Biological Sciences

The period of maternal dependence is a time during which mammalian infants must optimise both their growth and the development of behavioural skills in order to successfully meet the demands of independent living. The rate and duration of maternal provisioning, post-weaning food availability and climatic conditions are all factors likely to influence the growth strategies of infants. While numerous studies have documented differences in growth strategies at high taxonomic levels, few have investigated those of closely related species inhabiting similar environments. The present study examined the body composition, metabolism and indices of physiological development in pups of Antarctic fur seals …


Percopsiformes (Troutperchers And Relatives), Aldemaro Romero Jr. Jan 2003

Percopsiformes (Troutperchers And Relatives), Aldemaro Romero Jr.

Publications and Research

No abstract provided.