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Articles 1 - 30 of 165
Full-Text Articles in Marine Biology
Brody-Bertalanffy Growth Curves From Tag And Recapture Studies On Cabezon (Scorpaenichthys Marmoratus) And Gopher Rockfish (Sebastes Carnatus) Of The Central Coast, Christie Yorke
Biological Sciences
No abstract provided.
Emergent Behavior In A Coupled Economic And Coastline Model For Beach Nourishment, Eli D. Lazarus, D E. Mcnamara, M D. Smith, S Gopalakrishnan, A B. Murray
Emergent Behavior In A Coupled Economic And Coastline Model For Beach Nourishment, Eli D. Lazarus, D E. Mcnamara, M D. Smith, S Gopalakrishnan, A B. Murray
Publications
Developed coastal areas often exhibit a strong systemic coupling between shoreline dynamics and economic dynamics. "Beach nourishment", a common erosion-control practice, involves mechanically depositing sediment from outside the local littoral system onto an actively eroding shoreline to alter shoreline morphology. Natural sediment-transport processes quickly rework the newly engineered beach, causing further changes to the shoreline that in turn affect subsequent beach-nourishment decisions. To the limited extent that this landscape/economic coupling has been considered, evidence suggests that towns tend to employ spatially myopic economic strategies under which individual towns make isolated decisions that do not account for their neighbors. What happens …
Number 53 (December 2011), Southern Fishes Council
Number 53 (December 2011), Southern Fishes Council
Southeastern Fishes Council Proceedings
(December 2011) - Population Status and Environmental Associations of the Rare Striated Darter, Etheostoma striatulum. By Andrew C. Abernathy and Hayden T. Mattingly
Conservation Status of the Longhead Darter, Percina macrocephala, in Kinniconick Creek, Kentucky. By David A. Eisenhour, Audrey M. Richter and Joshua M. Shiering
First Observation of a Natural Hybrid Between Endangered Roanoke Logperch (Percina rex) and Chainback Darter (Percina navisense). By James H. Roberts
Minutes, Business Meeting, 36th Annual Meeting, Southeastern Fishes Council
2010 Treasurer's Report for the Southeastern Fishes Council
Population Status And Environmental Associations Of The Rare Striated Darter, Etheostoma Striatum, Andrew C. Abernathy, Hayden T. Mattingly
Population Status And Environmental Associations Of The Rare Striated Darter, Etheostoma Striatum, Andrew C. Abernathy, Hayden T. Mattingly
Southeastern Fishes Council Proceedings
No abstract provided.
Front Matter, Southeastern Fishes Council
Front Matter, Southeastern Fishes Council
Southeastern Fishes Council Proceedings
No abstract provided.
First Observation Of A Natural Hybrid Between Endangered Roanoke Logperch (Percina Rex) And Chainback Darter (Percina Navisense), James H. Roberts
First Observation Of A Natural Hybrid Between Endangered Roanoke Logperch (Percina Rex) And Chainback Darter (Percina Navisense), James H. Roberts
Southeastern Fishes Council Proceedings
No abstract provided.
2010 Treasurer's Report For The Southeastern Fishes Council, Southeastern Fishes Council
2010 Treasurer's Report For The Southeastern Fishes Council, Southeastern Fishes Council
Southeastern Fishes Council Proceedings
No abstract provided.
Conservation Status Of The Longhead Darter, Percina Macrocephala, In Kinnicock Creek, Kentucky, David A. Eisenhour, Audrey M. Richter, Joshua M. Shiering
Conservation Status Of The Longhead Darter, Percina Macrocephala, In Kinnicock Creek, Kentucky, David A. Eisenhour, Audrey M. Richter, Joshua M. Shiering
Southeastern Fishes Council Proceedings
No abstract provided.
Minutes, Business Meeting, 36th Annual Meeting, Southeastern Fishes Council, Southeastern Fishes Council
Minutes, Business Meeting, 36th Annual Meeting, Southeastern Fishes Council, Southeastern Fishes Council
Southeastern Fishes Council Proceedings
No abstract provided.
Benthic Habitat Characterization For The South Florida Ocean Measurement Facility (Sfomf), David S. Gilliam, Brian K. Walker
Benthic Habitat Characterization For The South Florida Ocean Measurement Facility (Sfomf), David S. Gilliam, Brian K. Walker
Marine & Environmental Sciences Faculty Reports
This report summarizes the distribution and relative abundance of two stony coral species (Acropora cervicornis and Acropora palmata) currently listed as threatened under the US Endangered Species Act (ESA) (Federal Register/Vol. 71, No. 129/Thursday, July 6, 2006 / Rules and Regulations, http://www.gpo.gov/fdsys/pkg/FR-2006-07-06/pdf/06-6017.pdf) and seven additional stony coral species which have been petitioned for listing as endangered or threatened under the ESA (Agaricia lamarcki, Dendrogyra cylindrus, Dichocoenia stokesii, Montastraea annularis, Montastraea faveolata, Montastraea franksi, and Mycetophyllia ferox) (Federal Register/Vol. 75, No. 27/Wednesday, February 10, 2010/Proposed Rules, http://www.nmfs.noaa.gov/pr/pdfs/fr/fr75-6616.pdf). This report also summarizes the abundance and distribution …
Thermal Tolerance Of Age-0 Gulf Of Mexico Striped Bass (Morone Saxatilis): Ontogenetic And Genetic Effects, Corey Robert Anderson
Thermal Tolerance Of Age-0 Gulf Of Mexico Striped Bass (Morone Saxatilis): Ontogenetic And Genetic Effects, Corey Robert Anderson
Master's Theses
Striped bass, Morone saxatilis, were historically abundant in the Gulf of Mexico region but were largely extirpated from most Gulf rivers by the early 1960s. Since 1967 hatchery stocking has supported populations in Mississippi rivers and to date there is no evidence of natural reproduction. Intolerance of striped bass to high water temperature is a potential factor negatively impacting Gulf striped bass survival and reproductive fitness, and may be a limiting factor to reintroduction of the species in Mississippi. This work contributed to restoration efforts by establishing molecular tools necessary for genetic monitoring of striped bass restoration, and evaluating …
Quantifying Rates Of Autocompaction In The Pearl River Marsh, Louisiana, Jeremiah Nicholas Prouhet
Quantifying Rates Of Autocompaction In The Pearl River Marsh, Louisiana, Jeremiah Nicholas Prouhet
Master's Theses
Annual rates of shallow autocompaction (< 1 m) were calculated in the upper ~one meter of sediment from six cores of a transect in the Pearl River Marsh (PRM), Louisiana, in order to determine the most significant sedimentary property controlling this process. Compaction-free wedge cores were sub-sampled at one centimeter intervals to collect the following data: age control, using 137Cs and 210Pb, and sedimentary variables, specifically, particulate organic carbon, bulk density, median grain size, porosity, and water content. An upper and an underlying sedimentary unit (named the 137Cs and 210Pb units) were defined between radiometric datum levels, and their sedimentary properties were statistically tested for significant differences using the non-parametric Mann-Whitney test. Rates of autocompaction were calculated from the model of Williams (2003), and both rates of autocompaction and sedimentation were tested for significant differences between the upper and lower sedimentary units.
The upper unit in the six cores generally had lower bulk density, higher water content, higher porosity, and higher particulate organic carbon than the underlying unit, but with some interesting exceptions. Additionally, annual autocompaction and sedimentation rates were greatest in the overlying unit at stations PR02 (0.39 ± 0.05 cm/y) and PR05 (0.42 ± 0.03 cm/y) and greatest in the underlying unit at stations PR02 (0.22 ± 0.08 cm/y) and PR03 (0.18 ± 0.06 cm/y). Based on Spearman correlations, rates of autocompaction were most strongly correlated to and influenced by rates of sedimentation rather …
Measuring And Comparing Quantum Yield In Two Species Of Marine Diatoms Subjected To Constant And Fluctuating Light Conditions, Matthew Leon Stone
Measuring And Comparing Quantum Yield In Two Species Of Marine Diatoms Subjected To Constant And Fluctuating Light Conditions, Matthew Leon Stone
Master's Theses
A small-scale study was conducted to determine the effects of light fluctuations on the photosynthetic efficiency of marine phytoplankton. Two species, Phaeodactylum tricornutum and Chaetoceros gracile were grown in specialized photobioreactors on a 12-hour:12-hour light:dark cycle. The cultures were diluted 50% daily to attain a specific growth rate of 0.70 d-1. To simulate vertical mixing in high turbidity habitats under various wind conditions, dense cultures were subjected to fluctuating light treatments with frequencies ranging from 0.10 Hz to 2.00 Hz. Parallel experiments subjected the cultures to static light conditions with equal total daily light doses as those of the cultures …
Phytoplankton Abundance And Species Composition In Relation To Environmental Paramenters In Coastal Mississippi Waters, Luz Karime Molina
Phytoplankton Abundance And Species Composition In Relation To Environmental Paramenters In Coastal Mississippi Waters, Luz Karime Molina
Master's Theses
Phytoplankton pigments from Coastal Mississippi waters were measured to determine the spatial and temporal distributions and composition of phytoplankton communities. Concentration of phytoplankton pigments were analyzed using High Performance Liquid Chromatography (HPLC) and the compositional changes in phytoplankton communities were determined with CHEMTAX 1.95. Surface water was collected for two years (September 2007-November 2009) at three sampling sites on a monthly basis. The stations were located at the Bay of St. Louis (station 1), the Mississippi Sound (station 4) and the Mississippi Bight (station 8), following a salinity gradient. A time series of the observations documented the variability of different …
The Use Of Computed Tomography To Measure Biogenic Structures In Recently Hypoxic And Normoxic Sediments On The Louisiana Continental Shelf, Valerie Ann Hartman
The Use Of Computed Tomography To Measure Biogenic Structures In Recently Hypoxic And Normoxic Sediments On The Louisiana Continental Shelf, Valerie Ann Hartman
Master's Theses
Over the past 60 years, seasonal hypoxia in the northern Gulf of Mexico has occurred with increased severity and over a greater area. To determine if biogenic structures in the northern Gulf of Mexico vary in response to hypoxic stress, the seafloor on the continental shelf of Louisiana was analyzed during the spring and fall of 2009 at four provinces of similar sediment type that differ in recent history of bottom water oxygen concentration. Subcores were analyzed by computed tomography (CT) to determine the number, diameter, length, volume, surface area, and depth of biogenic burrow structures in sediments where biogenic …
Environmental Influences On Juvenile Fish Abundances In A River-Dominated Coastal System, Laure Carassou, Brian Dzwonkowski, Frank J. Hernandez, Jr., Sean P. Powers, William M. Graham, Kyeong Park, John Mareska
Environmental Influences On Juvenile Fish Abundances In A River-Dominated Coastal System, Laure Carassou, Brian Dzwonkowski, Frank J. Hernandez, Jr., Sean P. Powers, William M. Graham, Kyeong Park, John Mareska
University Faculty and Staff Publications
We investigated the influence of climatic and environmental factors on variations in juvenile abundances of marine fishes in a river-dominated coastal system of the north-central Gulf of Mexico, where an elevated primary productivity sustains fisheries of high economic importance. Fish were collected monthly with an otter trawl at three stations near Mobile Bay from 1982 to 2007. Fish sizes were used to isolate juvenile stages within the data set, and monthly patterns in juvenile fish abundance and size were then used to identify seasonal peaks for each species. The average numbers of juvenile fish collected during these seasonal peaks in …
Restoring Salt Marsh And Functions To Newly Acquired Shoreline In North Mill Pond, Portsmouth, David M. Burdick
Restoring Salt Marsh And Functions To Newly Acquired Shoreline In North Mill Pond, Portsmouth, David M. Burdick
PREP Reports & Publications
A berm of construction debris used to fill salt marsh and steepen the shoreline along North Mill Pond many decades ago was removed in 2010 after the land was deeded to the City. Removal of the berm reestablished regular tidal flooding to over 2,400 ft2 of tidal marsh. From 2009 to 2011, the fifth grade classes at New Franklin School learned about the project and planted mussels, shrubs and marsh plants at the site. Plant survival was excellent in the low marsh (94%) and good in the high marsh (77%). By September 2011 (Year Two) plant cover increased to 42% …
Invasive Species Management And Buffer Outreach On Goss Farm, Rye, Nh, Rockingham County Conservation District
Invasive Species Management And Buffer Outreach On Goss Farm, Rye, Nh, Rockingham County Conservation District
PREP Reports & Publications
The Goss Farm was permanently protected in November of 2010 with assistance from the USDA, Natural Resources Conservation Service Farm and Ranch Lands Protection Program (FRPP) and is located directly adjacent to the Awcomin Salt Marsh, in Rye, New Hampshire. The Town of Rye Conservation Commission owns the land, and the RCCD holds the conservation easement on the property. The Piscataqua Region Estuaries Partnership (PREP) provided $9,930 in funding assistance to support the Rockingham County Conservation District in its partnership capacity with the Rye Conservation Commission and other natural resource agencies to complete outreach, to plan and complete integrated pest …
Assessment Of Oyster Reefs In Lynnhaven River As A Chesapeake Bay Tmdl Best Management Practice, Mac Sisson, M. Lisa Kellogg, Mark Luckenbach, Rom Lipcius, Allison Colden, Jeff Cornwell, Michael Owens
Assessment Of Oyster Reefs In Lynnhaven River As A Chesapeake Bay Tmdl Best Management Practice, Mac Sisson, M. Lisa Kellogg, Mark Luckenbach, Rom Lipcius, Allison Colden, Jeff Cornwell, Michael Owens
Reports
No abstract provided.
A Comprehensive Method For Fractionating Soil Organic Matter Not Protected And Protected From Decomposition By Physical And Chemical Mechanisms, César Plaza, José M. Fernández, Engil Isadora Pujol Pereira, Alfredo Polo
A Comprehensive Method For Fractionating Soil Organic Matter Not Protected And Protected From Decomposition By Physical And Chemical Mechanisms, César Plaza, José M. Fernández, Engil Isadora Pujol Pereira, Alfredo Polo
School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations
The objective of this work was to describe a method for isolating meaningful and measurable soil organic matter (SOM) pools that differ in the mechanisms by which they are protected from decomposition. The proposed method is appropriate for soil C stabilization and sequestration studies. Unlike previous fractionation schemes, this procedure allows free SOM located between aggregates (unprotected C pool) and SOM occluded within both macroaggregates and microaggregates (C weakly and strongly protected by physical mechanisms, respectively) to be recovered separately, freed from the soil mineral matrix and the mineral-associated SOM pool (C pool protected by chemical mechanisms) and thus well …
Field Ecology Patterns Of High Latitude Coral Communities, Kristi A. Foster
Field Ecology Patterns Of High Latitude Coral Communities, Kristi A. Foster
HCNSO Student Theses and Dissertations
Some climate models predict that, within the next 30-50 years, sea surface temperatures (SSTs) will frequently exceed the current thermal tolerance of corals (Fitt et al. 2001; Hughes et al. 2003; Hoegh-Guldberg et al. 2007). A potential consequence is that mass coral bleaching may take place (i) during warm El Niño-Southern Oscillation (ENSO) events which are predicted to occur in some regions more frequently than the current 3-7 year periodicity (Hoegh-Guldberg 1999; Sheppard 2003) or (ii) perhaps as often as annually or biannually if corals and their symbionts are unable to acclimate to the higher SSTs (Donner et al. 2005, …
Autotomy Of The Posterior Foot In Agaronia Propatula (Caenogastropoda: Olividae) Occurs In Animals That Are Fully Withdrawn Into Their Shells, Samantha D. Rupert, Winfried S. Peters
Autotomy Of The Posterior Foot In Agaronia Propatula (Caenogastropoda: Olividae) Occurs In Animals That Are Fully Withdrawn Into Their Shells, Samantha D. Rupert, Winfried S. Peters
Winfried S. Peters
Protecting A Portion Of The Beaver Dam Heath Conservation Focus Area And Initiating Innovative Conservation Financing In Berwick, Maine, Great Works Regional Land Trust
Protecting A Portion Of The Beaver Dam Heath Conservation Focus Area And Initiating Innovative Conservation Financing In Berwick, Maine, Great Works Regional Land Trust
PREP Reports & Publications
This project permanently protected 28 acres in the Beaver Dam Heath Conservation Focus Area through a bargain sale of the fee simple interest. The Grants Meadow III parcel is 85% wetland. The remainder of the upland lies along Diamond Hill Road with adequate frontage for 2-3 house lots. This project involved outreach to the Town of Berwick for project funding to match the PREP funding awarded. GWRLT also received NAWCA funds to complete the project.
Promoting Land Conservation In The Coastal Watershed Through Local Faces, Special Places, Brian Hart
Promoting Land Conservation In The Coastal Watershed Through Local Faces, Special Places, Brian Hart
PREP Reports & Publications
The Piscataqua Region Estuaries Partnership provided nearly $3,300.00 to support the Southeast Land Trust of New Hampshire’s (SELTNH) promotion of donated conservation easements in the coastal watershed of Rockingham County. The Southeast Land Trust produced three short web-friendly videos, explaining land conservation from the perspective of a tree farmer, vineyard owner, and a community leader. In addition, the Land Trust hosted two workshops in Kingston and Epping for landowners interested in learning more about the tax and financial benefits of land conservation. Workshop invitations were mailed to more than 1,200 current use landowners within the region. Twenty-two landowners attended the …
Development Of Gene Expression Markers Of Acute Heat-Light Stress In Reef-Building Corals Of The Genus Porites, Carly D. Kenkel, Galina Aglyamova, Ada Alamaru, Ranjeet Bhagooli, Roxana Capper, Ross Cunning, Amanda Devillers, Joshua A. Haslun, Laetitia Hédouin, Shashank Keshavmurthy, Kristin Kuehl, Huda Mahmoud, Elizabeth S. Mcginty, Phanor H. Montoya-Maya, Caroline V. Palmer, Raffaella Pantile, Juan A. Sánchez, Tom Schils, Rachel N. Silverstein, Logan B. Squiers, Pei-Ciao Tang, Tamar L. Goulet, Mikhail V. Matz
Development Of Gene Expression Markers Of Acute Heat-Light Stress In Reef-Building Corals Of The Genus Porites, Carly D. Kenkel, Galina Aglyamova, Ada Alamaru, Ranjeet Bhagooli, Roxana Capper, Ross Cunning, Amanda Devillers, Joshua A. Haslun, Laetitia Hédouin, Shashank Keshavmurthy, Kristin Kuehl, Huda Mahmoud, Elizabeth S. Mcginty, Phanor H. Montoya-Maya, Caroline V. Palmer, Raffaella Pantile, Juan A. Sánchez, Tom Schils, Rachel N. Silverstein, Logan B. Squiers, Pei-Ciao Tang, Tamar L. Goulet, Mikhail V. Matz
Department of Biological Sciences
Coral reefs are declining worldwide due to increased incidence of climate-induced coral bleaching, which will have widespread biodiversity and economic impacts. A simple method to measure the sub-bleaching level of heat-light stress experienced by corals would greatly inform reef management practices by making it possible to assess the distribution of bleaching risks among individual reef sites. Gene expression analysis based on quantitative PCR (qPCR) can be used as a diagnostic tool to determine coral condition in situ. We evaluated the expression of 13 candidate genes during heat-light stress in a common Caribbean coral Porites astreoides, and observed strong …
Potential Impacts Of The Deepwater Horizon Oil Spill On Large Pelagic Fishes, Sarah Frias-Torres, Charles R. Bostater
Potential Impacts Of The Deepwater Horizon Oil Spill On Large Pelagic Fishes, Sarah Frias-Torres, Charles R. Bostater
Ocean Engineering and Marine Sciences Faculty Publications
Biogeographical analyses provide insights on how the Deepwater Horizon oil spill impacted large pelagic fishes. We georeferenced historical ichthyoplankton surveys and published literature to map the spawning and larval areas of bluefin tuna, swordfish, blue marlin and whale shark sightings in the Gulf of Mexico with daily satellite-derived images detecting surface oil. The oil spill covered critical areas used by large pelagic fishes. Surface oil was detected in 100% of the northernmost whale shark sightings, in 32.8 % of the bluefin tuna spawning area and 38 % of the blue marlin larval area. No surface oil was detected in the …
The Lobster Bulletin, Fall 2011, Lobster Institute, University Of Maine
The Lobster Bulletin, Fall 2011, Lobster Institute, University Of Maine
Lobster Bulletin
The Lobster Bulletin newsletter includes research updates, and information on lobsters and the lobster industry. The Lobster Institute at the University of Maine is dedicated to protecting and conserving the lobster resource, and enhancing lobstering as an industry and a way of life.
Headlines in the Fall 2011 issue include:
- Lobster Institute to Present Two Workshops at the Massachusetts Lobstermen's Association Weekend
- Number of Right Whales Up in Bay of Fundy
- Coming 2012 The Lobster Institute's 25th Anniversary
- A Full House for the Lobster Institute's Holiday Lobster & Wine Fest
- Research Report: Squid Outweighs Lobster in Rhode Island Fishery
- Research …
Particle Association Of Enterococcus And Total Bacteria In The Lower Hudson River Estuary, Usa, Elizabeth A. Suter, Andrew R. Juhl, Gegory D. O'Mullan
Particle Association Of Enterococcus And Total Bacteria In The Lower Hudson River Estuary, Usa, Elizabeth A. Suter, Andrew R. Juhl, Gegory D. O'Mullan
Faculty Works: Biology, Chemistry, and Environmental Studies
Bacterial particle association has important consequences for water-quality monitoring and modeling. Parti-cle association can change vertical and horizontal transport of bacterial cells, as well as patterns of persis-tence and production. In this study, the abundance and particle association of total bacteria and the fe-cal-indicator, Enterococcus, were quantified between June and October 2008 in the lower Hudson River Es-tuary (HRE). Twelve sites were sampled, including mid-channel, near shore, and tributary habitats, plus a sewage outfall. Total bacterial cell counts averaged 9.2 × 109 ± 6.4 × 109 cell·l–1 (1 standard deviation), com-parable to previous sampling in the HRE. Unlike earlier studies, …
Developing 2010 Impervious Surface Estimates For The Piscataque Region Estuaries Partnership Towns, David G. Justice, Fay A. Rubin
Developing 2010 Impervious Surface Estimates For The Piscataque Region Estuaries Partnership Towns, David G. Justice, Fay A. Rubin
PREP Reports & Publications
Estimates of impervious surface acreage for 2010 were generated for the 59-town region covered by the Piscataqua Region Estuaries Partnership (PREP). The project extended previous work done in the region for the years 1990, 2000, and 2005 and relied on the same satellite-based data sources and image processing methodologies. As a result, standardized impervious surface estimates are now available for a 20-year time period in the PREP region. The current project mapped impervious surfaces (buildings, pavement, etc.) based on a Landsat 5 Thematic Mapper (TM) image acquired on April 24, 2010. Processing used both traditional and sub-pixel image classification techniques, …
Green Marine Construction, Sylvain Pioch, Kirk Kilfoyle, Harold Levrel, Richard E. Spieler
Green Marine Construction, Sylvain Pioch, Kirk Kilfoyle, Harold Levrel, Richard E. Spieler
Marine & Environmental Sciences Faculty Articles
The oceans incorporate three-quarters of the Earth's surface, and most of humanity lives in coastal regions. For example, more than half of the total U.S. population presently lives in coastal areas, and the coastal population is projected to increase by 7 million between now and 2015. Similar projections can be made for other developed countries many of which depend on the coastal zone as a major source of tourism-related income. The long-term ecological health and sustainability of the marine and coastal environments are obviously at risk. Coastal projects such as beach re-nourishment, housing developments, and pipe-line, harbor and marina construction …