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Articles 3061 - 3090 of 7414

Full-Text Articles in Marine Biology

The Phenology Of Sand Crabs, Lepidopa Benedicti (Decapoda: Albuneidae), Zen Faulkes Mar 2017

The Phenology Of Sand Crabs, Lepidopa Benedicti (Decapoda: Albuneidae), Zen Faulkes

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

Albuneid sand crabs are widespread on sandy beaches around the world, but because they conceal themselves by digging in sand and are often found at low densities, little is known about their basic biology. Lepidopa species were collected from the beaches of South Padre Island, Texas, on the western coast of Gulf of Mexico, a location that had previously been suggested to act as a population sink. The site contained Lepidopa benedicti and L. websteri, although the latter was extremely rare (collected three times in 5 years). There was significant variation in abundance across the year, with higher densities …

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Age And Growth Of Whale Sharks (Rhincodon Typus) Near The South Ari Atoll, Maldives, Cameron T. Perry Mar 2017

Age And Growth Of Whale Sharks (Rhincodon Typus) Near The South Ari Atoll, Maldives, Cameron T. Perry

HCNSO Student Theses and Dissertations

The whale shark (Rhincodon typus) has a global distribution in warm to warm temperate oceans, and is a species of high conservation concern currently categorized as Endangered on the International Union for Conservation of Nature (IUCN) Red List. Despite its dire conservation status and concerns about the growing number of ecotourism interactions with this species worldwide, relatively little information is available on key aspects of whale shark biology such as growth rates, reproductive rates, survival rates and breeding habitats. In particular, critical information such as age and growth of whale sharks is needed to improve the management and …

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Justo Sierra Cruise Sample Data, Southern Gulf Of Mexico, 2015, Patrick Schwing Mar 2017

Justo Sierra Cruise Sample Data, Southern Gulf Of Mexico, 2015, Patrick Schwing

C-IMAGE data

This dataset includes CTD data from two cruises aboard the B/O Justo Sierra in 2015. Data are in ACSII and RAW format.

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Minor In Proficiency In Ocean Data Science (Pods), Joanna Burkhardt Mar 2017

Minor In Proficiency In Ocean Data Science (Pods), Joanna Burkhardt

Library Impact Statements

No abstract provided.

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Progression Of Activity And Predator Avoidance In California Grunion Larvae, Callyn E. Shelley Mar 2017

Progression Of Activity And Predator Avoidance In California Grunion Larvae, Callyn E. Shelley

Seaver College Research And Scholarly Achievement Symposium

No abstract provided.

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Nematocyst Distribution Corresponds To Prey Capture Location In Hydromedusae With Different Predation Modes, Marco Corrales-Ugalde, Sean Colin, Kelly R. Sutherland Mar 2017

Nematocyst Distribution Corresponds To Prey Capture Location In Hydromedusae With Different Predation Modes, Marco Corrales-Ugalde, Sean Colin, Kelly R. Sutherland

Arts & Sciences Faculty Publications

Understanding the factors that control predation in pelagic communities can inform predictions of community structure in marine ecosystems. Ubiquitous and selective predators such as cnidarian hydromedusae rely on their nematocysts to capture and retain prey but it is not clear how the density and spatial distribution of these cells relate to predation mode. We examined the relationship between prey capture and nematocyst distribution in the tentacles of Aglantha digitale and Proboscidactyla flavicirrata, which are considered ambush predators, and Clytia gregaria and Mitrocoma cellularia, which are considered feeding-current predators. First, we analyzed video of predator-prey interactions to compare capture locations of …

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Distribution And Conservation Status Of The Freshwater Gastropods Of Nebraska, Bruce J. Stephen Mar 2017

Distribution And Conservation Status Of The Freshwater Gastropods Of Nebraska, Bruce J. Stephen

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

This survey of freshwater gastropods within Nebraska includes 159 sample sites and encompasses the four primary level III ecoregions of the State. I identified sixteen species in five families. Six of the seven species with the highest incidence, Physa gyrina, Planorbella trivolvis, Stagnicola elodes, Gyraulus parvus, Stagnicola caperata, and Galba humilis were collected in each of Nebraska’s four major level III ecoregions. The exception, Physa acuta, was not collected in the Western High Plains ecoregion. Seven indigenous species, Valvata tricarinata, Helisoma anceps, Campeloma decisum, Galba bulimoides, Physa jennessi, Ferrissia rivularis, and …

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Oceanographic Data Integration Ii Ocg 351, Michael Cerbo Mar 2017

Oceanographic Data Integration Ii Ocg 351, Michael Cerbo

Library Impact Statements

No abstract provided.

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Linkage Mapping And Comparative Genomics Of Red Drum (Sciaenops Ocellatus) Using Next-Generation Sequencing, Christopher M. Hollenbeck, David S. Portnoy, Dana Wetzel, Tracy A. Sherwood, Paul B. Samollow, John R. Gold Mar 2017

Linkage Mapping And Comparative Genomics Of Red Drum (Sciaenops Ocellatus) Using Next-Generation Sequencing, Christopher M. Hollenbeck, David S. Portnoy, Dana Wetzel, Tracy A. Sherwood, Paul B. Samollow, John R. Gold

C-IMAGE Publications

Developments in next-generation sequencing allow genotyping of thousands of genetic markers across hundreds of individuals in a cost-effective manner. Because of this, it is now possible to rapidly produce dense genetic linkage maps for nonmodel species. Here, we report a dense genetic linkage map for red drum, a marine fish species of considerable economic importance in the southeastern United States and elsewhere. We used a prior microsatellite-based linkage map as a framework and incorporated 1794 haplotyped contigs derived from high-throughput, reduced representation DNA sequencing to produce a linkage map containing 1794 haplotyped restriction-site associated DNA (RAD) contigs, 437 anonymous microsatellites, …

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Carbon Sequestration By Australian Tidal Marshes, Peter I. Macreadie, Q. R. Oliver, J. J. Kelleway, Oscar Serrano, P. E. Carnell, C. J. Ewers Lewis, T. B. Atwood, J. Sanderman, J. Baldock, R. M. Connolly, C. M. Duarte, Paul Lavery, A. Steven, C. E, Lovelock Mar 2017

Carbon Sequestration By Australian Tidal Marshes, Peter I. Macreadie, Q. R. Oliver, J. J. Kelleway, Oscar Serrano, P. E. Carnell, C. J. Ewers Lewis, T. B. Atwood, J. Sanderman, J. Baldock, R. M. Connolly, C. M. Duarte, Paul Lavery, A. Steven, C. E, Lovelock

Research outputs 2014 to 2021

Australia’s tidal marshes have suffered significant losses but their recently recognised importance in CO2 sequestration is creating opportunities for their protection and restoration. We compiled all available data on soil organic carbon (OC) storage in Australia’s tidal marshes (323 cores). OC stocks in the surface 1 m averaged 165.41 (SE 6.96) Mg OC ha − 1 (range 14 – 963 Mg OC ha − 1). The mean OC accumulation rate was 0.55 ± 0.02 Mg OC ha − 1 yr − 1. Geomorphology was the most important predictor of OC stocks, with fluvial sites having twice the stock of OC …

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Oil Extraction Visible Infrared Imaging Radiometer Suite (Viirs) Imagery, Western Gulf Of Mexico 2005-2013, Mengqiu Wang Mar 2017

Oil Extraction Visible Infrared Imaging Radiometer Suite (Viirs) Imagery, Western Gulf Of Mexico 2005-2013, Mengqiu Wang

C-IMAGE data

This dataset includes MODIS and VIIRS imagery used in the paper "Extracting Oil Slick Features From VIIRS Nighttime Imagery Using a Gaussian Filter and Morphological Constraints" (DOI: 10.1109/LGRS.2015.2444871). For accuracy assessment, the ROI file used as oil slick ground truth, feature extraction results, the VIIRS nighttime imagery used in the test and the final accuracy assessment statistics are also included.

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Chlorophyll Concentration And Optical Absorption Spectra Of Particulate And Dissolved Material, Collected At Several Depths On Deepend Cruises Dp03 And Dp04 From January-December 2016, Chuanmin Hu, Jenifer Cannizzaro, David English Mar 2017

Chlorophyll Concentration And Optical Absorption Spectra Of Particulate And Dissolved Material, Collected At Several Depths On Deepend Cruises Dp03 And Dp04 From January-December 2016, Chuanmin Hu, Jenifer Cannizzaro, David English

DEEPEND Datasets

The optical absorption spectra from seawater’s particulate and dissolved components can be used to compute the penetration of light to various depths, estimate the proportion of living to non-living particulate matter, assess photosynthetic light availability and the type of phytoplankton present, and the validate of satellite or airborne ocean color measurements. Chlorophyll and phaeopigment concentrations are often used to estimate the amount of phytoplankton present, and to allow extrapolation of in situ fluorometric measurements. Water was collected using a CTD rosette near the surface and from several depths at each sampling station occupied by the DEEPEND cruises DP03 & DP04 …

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The Relationship Between Near Shore Hardbottom Exposure And Benthic Community Composition And Distribution In Palm Beach County, Fl, Kristen A. Cumming Mar 2017

The Relationship Between Near Shore Hardbottom Exposure And Benthic Community Composition And Distribution In Palm Beach County, Fl, Kristen A. Cumming

HCNSO Student Theses and Dissertations

Anthropogenic changes to the landscape, storm events and sea level rise are contributing to the erosion of beaches leading to an increase of the sediment load in near shore marine environments. Palm Beach, Florida is host to unique near shore hardbottom habitats. These areas are distinct from the vast expanses of surrounding sediments and play and important role of habitat and shelter for many different species. In this study, remotely sensed images from 2000-2015 were used to look at the movement of sediment and how it contributes to exposure rates of near shore hardbottom habitats in Palm Beach, Florida and …

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Seagrassnet Monitoring In Great Bay, New Hampshire, 2015, Frederick T. Short Mar 2017

Seagrassnet Monitoring In Great Bay, New Hampshire, 2015, Frederick T. Short

PREP Reports & Publications

SeagrassNet is a global monitoring program begun in 2001 and designed to scientifically detect and document seagrass habitat change (Short et al. 2006a, 2014). Monitoring of eelgrass (Zostera marina L.) in the Great Bay Estuary using SeagrassNet was conducted in Portsmouth Harbor between 2001 and 2009 (Short et al. 2006b, Rivers and Short 2007), and in Great Bay starting in 2007 (Short 2009). Results from SeagrassNet 2015, supported by PREP and conducted in Great Bay, are described in this report.

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Eelgrass Distribution In The Great Bay Estuary And Piscataqua River For 2016, Seth Barker Mar 2017

Eelgrass Distribution In The Great Bay Estuary And Piscataqua River For 2016, Seth Barker

PREP Reports & Publications

Eelgrass distribution in Great Bay, Little Bay, and the Piscataqua River Estuary were mapped from aerial photography acquired on August 5, 2016. The total area of eelgrass beds with 10% or greater cover and a polygon area equal to or greater than 100 square meters was 683.42 hectares or 1688.71 acres. Eelgrass polygons were coded for Assessment Zone location and the results reported in Table 1.The largest concentration of eelgrass was found in Great Bay with lesser amounts in the vicinity of Portsmouth Harbor. The total area of eelgrass was nearly identical to that mapped in 2013 though there were …

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Weatherbird Ii Sediment Cruise Sample Data (2016), Patrick Schwing, Steven Murawski Mar 2017

Weatherbird Ii Sediment Cruise Sample Data (2016), Patrick Schwing, Steven Murawski

C-IMAGE data

This dataset includes the locations and allotments of multicore sediment samples, water sample locations, and CTD data from cruises aboard the R/V Weatherbird II from 2016.

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Ixtoc-I Oil Spill Footprints Derived From Coastal Zone Color Scanner And Landsat/Mss Imagery, Shaojie Sun Mar 2017

Ixtoc-I Oil Spill Footprints Derived From Coastal Zone Color Scanner And Landsat/Mss Imagery, Shaojie Sun

C-IMAGE data

This dataset contains Coastal Zone Color Scanner (CZCS) and Landsat/MSS images used to identify the surface oil footprints created by the Ixtoc-I oil spill in 1979. There are two periods of imagery: June 1979-March 1980 is the oil spill period; and Jan. 1981-Dec. 1982 is the reference period. Oil slick surface footprints derived from the images are also included in the dataset. They are either in the format of shapefile or ArcGIS personal geodatabase.

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The Insulin-Like Growth Factor-1 (Igf1) System As A Potential Biomarker For Nutritional Status And Growth Rate In Pacific Rockfish (Sebastes Spp.), Nicole L. Hack Mar 2017

The Insulin-Like Growth Factor-1 (Igf1) System As A Potential Biomarker For Nutritional Status And Growth Rate In Pacific Rockfish (Sebastes Spp.), Nicole L. Hack

Master's Theses

Growth performance in vertebrates is regulated by environmental factors including the quality and quantity of food, which influences growth via endocrine pathways such as the growth hormone (GH) / insulin-like growth factor somatotropic axis. In several teleost fishes, circulating concentrations of insulin-like growth factor-1 (Igf1) correlate positively with growth rate, and it has been proposed that plasma Igf1 levels may serve as an indicator of growth variation for fisheries and aquaculture applications. Here, I tested whether plasma Igf1 concentrations might serve as an indicator of somatic growth in olive rockfish (Sebastes serranoides), one species among dozens of rockfishes …

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A Multivariate Mixed Hidden Markov Model For Blue Whale Behaviour And Responses To Sound Exposure, Stacy L. Deruiter, Roland Langrock, Tomas Skirbutas, Jeremy A. Goldbogen Mar 2017

A Multivariate Mixed Hidden Markov Model For Blue Whale Behaviour And Responses To Sound Exposure, Stacy L. Deruiter, Roland Langrock, Tomas Skirbutas, Jeremy A. Goldbogen

University Faculty Publications and Creative Works

Characterization of multivariate time series of behaviour data from animal-borne sensors is challenging. Biologists require methods to objectively quantify baseline behaviour, and then assess behaviour changes in response to environmental stimuli. Here, we apply hidden Markov models (HMMs) to characterize blue whale movement and diving behaviour, identifying latent states corresponding to three main underlying behaviour states: shallow feeding, travelling, and deep feeding. The model formulation accounts for inter-whale differences via a computationally efficient discrete random effect, and measures potential effects of experimental acoustic disturbance on between-state transition probabilities. We identify clear differences in blue whale disturbance response depending on the …

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Marine Aquarium Trade In India: Challenges And Opportunities For Conservation And Policy, Sanjeevi Prakash, Thipramalai Thangappan Ajith Kumar, Rajeev Raghavan, Andrew L. Rhyne, Michael F. Tlusty, Thanumalaya Subramoniam Mar 2017

Marine Aquarium Trade In India: Challenges And Opportunities For Conservation And Policy, Sanjeevi Prakash, Thipramalai Thangappan Ajith Kumar, Rajeev Raghavan, Andrew L. Rhyne, Michael F. Tlusty, Thanumalaya Subramoniam

Arts & Sciences Faculty Publications

The collection of marine taxa for the aquarium trade continues to demand live animals be extracted from reefs, but in doing so, offers economic benefits for local communities. To improve our understanding of the status of marine aquariumtrade in India, information on harvested species and their volume was gathered at the major collection hubs (Tuticorin, Kilakarai and Mandapam) in the Gulf of Mannar region, and compared to the export data. During one year, 87 species of fish (51% belonging to the family Pomacentridae) and 21 species of invertebrates were harvested for the trade. The conservation status of exploited species revealed …

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Testing Of Great Bay Oysters For Two Protozoan Pathogens, Douglas E. Grout Mar 2017

Testing Of Great Bay Oysters For Two Protozoan Pathogens, Douglas E. Grout

PREP Reports & Publications

Two protozoan pathogens, Haplosporidium nelsoni (MSX) and Perkinsus marinus (Dermo) are known to be present in Great Bay oysters. With funds provided by the Piscataqua Region Estuaries Partnership (PREP), the Marine Fisheries Division of the New Hampshire Fish and Game Department (NHFG) continues to assess the presence and intensity of both of these disease conditions in oysters from the major natural beds within the Great Bay estuarine system. Histological examinations of Great Bay oysters have also revealed other endoparasites

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Recruitment Patterns Of Juvenile Fish At An Artificial Reef Area In The Gulf Of Mexico, Rachel Noel Arney, Catheline Y. M. Froehlich, Richard Kline Mar 2017

Recruitment Patterns Of Juvenile Fish At An Artificial Reef Area In The Gulf Of Mexico, Rachel Noel Arney, Catheline Y. M. Froehlich, Richard Kline

School of Earth, Environmental, & Marine Sciences Faculty Publications

In 2011 the Texas Parks and Wildlife Department and the Coastal Conservation Association of Texas deployed over 4,000 concrete culverts in a designated artificial reef area off Port Mansfield, Texas, to enhance habitat for sport fish species in the Gulf of Mexico. A study was conducted to assess juvenile fish recruitment at varying culvert densities within the artificial reef area. Standard monitoring units for the recruitment of reef fish (SMURFs) were used to sample juvenile fish, and these collections were compared with visual scuba surveys. The 0.027-m3 SMURFs were placed at four different culvert densities (0, 1–50, 51–100, and 101+ …

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Diversity Of Deep-Sea Fishes Of The Easter Island Ecoregion, Erin E. Easton, Javier Sellanes, Carlos F. Gaymer, Naiti A. Morales, Matthias Gorny, Eric Berkenpas Mar 2017

Diversity Of Deep-Sea Fishes Of The Easter Island Ecoregion, Erin E. Easton, Javier Sellanes, Carlos F. Gaymer, Naiti A. Morales, Matthias Gorny, Eric Berkenpas

School of Earth, Environmental, & Marine Sciences Faculty Publications

The Easter Island Ecoregion is in the center of the South Pacific gyre and experiences ultra-oligotrophic conditions that could make it highly susceptible to global change and anthropogenic activities, so it is imperative that these regions are characterized and studied so that conservation and sustainable management strategies can be developed. From the few studies from the region, we know that the coastal areas are relatively depauperate and have relatively high rates of endemism. Here, we present a brief report from the first video observations from this region of the deep-dwelling fishes from ROV exploration of benthic communities from …

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Turning Performance Of Brief Squid Lolliguncula Brevis During Attacks On Shrimp And Fish, Rachel A. Jastrebsky, Ian K. Bartol, Paul S. Krueger Mar 2017

Turning Performance Of Brief Squid Lolliguncula Brevis During Attacks On Shrimp And Fish, Rachel A. Jastrebsky, Ian K. Bartol, Paul S. Krueger

Biological Sciences Faculty Publications

Although squid are generally considered to be effective predators, little is currently known of how squid maneuver and position themselves during prey strikes. In this study, high-speed video and kinematic analyses were used to study attacks by the brief squid Lolliguncula brevis on both shrimp and fish. Squid attack successwas high (>80%) and three behavioral phases were identified: (1) approach, (2) strike and (3) recoil. Lolliguncula brevis demonstrated greater maneuverability (i.e. a smaller length-specific turning radius) and employed more body adjustments (i.e. mantle angle posturing) during approaches toward shrimp versus fish. Squid exhibited higher linear approach/strike velocities and accelerations …

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Conservation Status Of The American Horseshoe Crab, (Limulus Polyphemus): A Regional Assessment, David R. Smith, H. Jane Brockmann, Mark Beekey, Timothy L. King, Michael J. Millard, Jaime Zaldívar-Rae Mar 2017

Conservation Status Of The American Horseshoe Crab, (Limulus Polyphemus): A Regional Assessment, David R. Smith, H. Jane Brockmann, Mark Beekey, Timothy L. King, Michael J. Millard, Jaime Zaldívar-Rae

Biology Faculty Publications

Horseshoe crabs have persisted for more than 200 million years, and fossil forms date to 450 million years ago. The American horseshoe crab (Limulus polyphemus), one of four extant horseshoe crab species, is found along the Atlantic coastline of North America ranging from Alabama to Maine, USA with another distinct population on the coasts of Campeche, Yucatán and Quintana Roo in the Yucatán Peninsula, México. Although the American horseshoe crab tolerates broad environmental conditions, exploitation and habitat loss threaten the species. We assessed the conservation status of the American horseshoe crab by comprehensively reviewing available scientific information on its range, …

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Plasma Metabolites Reveal Changes In Physiological State Of Eared Grebes (Podiceps Nigricollis) During Three Non-Migratory Periods, Allison A. Yoshida Mar 2017

Plasma Metabolites Reveal Changes In Physiological State Of Eared Grebes (Podiceps Nigricollis) During Three Non-Migratory Periods, Allison A. Yoshida

Theses

Energy storage and use during the annual cycle of migratory birds is dynamic especially during migration. However, considerable amounts of the annual cycle are spent not migrating, and the physiological state of birds during these non-migratory periods is not well understood. We compared plasma metabolites (TRIG, BUTY, URIC, GLY) in Eared Grebes (Podiceps nigricollis) residing at three important areas when they are not migrating: fall staging (postbreeding at Mono Lake, California), spring staging (pre-breeding at Great Salt Lake, Utah), and an extended stopover prior to spring staging (Salton Sea, California). Plasma metabolites were also measured in resting and active grebes …

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Deepwater Horizon Incident Oil Slick Morphology Determined From United States Geological Survey Oil Volume Product, May 17 2010, Shaojie Sun Feb 2017

Deepwater Horizon Incident Oil Slick Morphology Determined From United States Geological Survey Oil Volume Product, May 17 2010, Shaojie Sun

C-IMAGE data

This dataset includes original oil volume product download from USGS, post processing file to remove noise and then classified to different oil thickness class file. All the afterward analysis and statistics are based on the classified oil thickness class file. Ascii files of oil slicks' area and length.

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Moderate Resolution Imaging Spectroradiometer (Modis) Surface Oil Products For The Gulf Of Mexico, April - July 2010, Chuanmin Hu, Lian Feng Feb 2017

Moderate Resolution Imaging Spectroradiometer (Modis) Surface Oil Products For The Gulf Of Mexico, April - July 2010, Chuanmin Hu, Lian Feng

C-IMAGE data

This dataset contains the MODIS surface oil products (with thickness of >0 but 8um as thick) for all the golden days between April and July of 2010.

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Weatherbird Ii Sediment Cruise Sample Data 2015, Patrick Schwing Feb 2017

Weatherbird Ii Sediment Cruise Sample Data 2015, Patrick Schwing

C-IMAGE data

This dataset includes the locations and allotments of multicore sediment samples, water sample locations, and CTD data from cruises aboard the R/V Weatherbird II from 2015.

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The Fate Of Carbon In Sediments Of The Xingu And Tapajós Clearwater Rivers, Eastern Amazon, Dailson J. Bertassoli Jr., André O. Sawakuchi, Henrique O. Sawakuchi, Fabiano N. Pupim, Gelvam A. Hartmann, Michael M. Mcglue, Cristiano M. Chiessi, Matthias Zabel, Enno Schefuß, Tatiana S. Pereira, Rudney A. Santos, Samantha B. Faustino, Paulo E. Oliveira, Denise C. Bicudo Feb 2017

The Fate Of Carbon In Sediments Of The Xingu And Tapajós Clearwater Rivers, Eastern Amazon, Dailson J. Bertassoli Jr., André O. Sawakuchi, Henrique O. Sawakuchi, Fabiano N. Pupim, Gelvam A. Hartmann, Michael M. Mcglue, Cristiano M. Chiessi, Matthias Zabel, Enno Schefuß, Tatiana S. Pereira, Rudney A. Santos, Samantha B. Faustino, Paulo E. Oliveira, Denise C. Bicudo

Earth and Environmental Sciences Faculty Publications

The Xingu and Tapajós rivers in the eastern Amazon are the largest clearwater systems of the Amazon basin. Both rivers have “fluvial rias” (i.e., lake-like channels) in their downstream reaches as they are naturally impounded by the Amazon mainstem. Fluvial rias are widespread in the Amazon landscape and most of the sedimentary load from the major clearwater and blackwater rivers is deposited in these channels. So far, little is known about the role of Amazon rias as a trap and reactor for organic sediments. In this study, we used organic and inorganic geochemistry, magnetic susceptibility, diatom, and pollen analyses in …

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