Stable Isotopes Used To Infer Trophic Position Of Green Turtles (Chelonia Mydas) From Dry Tortugas National Park, Gulf Of Mexico, United States,
2021
U.S. Geological Survey
Stable Isotopes Used To Infer Trophic Position Of Green Turtles (Chelonia Mydas) From Dry Tortugas National Park, Gulf Of Mexico, United States, David C. Roche, Michael S. Cherkiss, Brian J. Smith, Derek A. Burkholder, Kristen M. Hart
Marine & Environmental Sciences Faculty Articles
Evaluating resource use patterns for imperiled species is critical for understanding what supports their populations. Here we established stable isotope (δ13C, δ15N) values for the endangered green sea turtle (Chelonia mydas) population found within the boundaries of Dry Tortugas National Park (DRTO), south Florida, USA. There is little gene flow between turtles sampled at DRTO and in other rookeries in Florida, underscoring the need to study this distinct population. Between 2008 and 2015 we collected multiple sample types (skin [homogenized epidermis/dermis], whole blood, red blood cells, plasma, carapace) from 151 unique green turtles, including …
Effectiveness Against White Sharks Of The Rpela Personal Shark Deterrent Device Designed For Surfers,
2021
Cardno (NSW/ACT) Pty Ltd, St Leonards, New South Wales, Australia
Effectiveness Against White Sharks Of The Rpela Personal Shark Deterrent Device Designed For Surfers, Craig Blount, Dan Pygas, Marcus P. Lincoln Smith, Daryl P. Mcphee, Colby Bignell, Ocean Ramsey
Journal of Marine Science and Technology–Taiwan
Many shark bites to humans, including fatalities, have involved surfers. Various personal shark deterrents are commercially available to surfers, including Rpela v2, which is a battery-powered device fitted to a surfboard. It produces an electric field around the surfer aimed at deterring sharks from approaching or biting by disrupting their electro-reception organs. The device was tested on white sharks (Carcharodon carcharias) at Salisbury Island, Western Australia. In total, 46 trials were done with the Rpela v2 either active or not active to determine the device’s effect on sharks’ response to a floating board with fish bait attached (to tempt a …
Inter-Annual Changes Of Water Temperature In The Southern South China Sea's Continental Shelf: The Influence Of Enso On Malaysian Waters,
2021
Institute of Oceanography and Environment, Universiti Malaysia Terengganu, Malaysia
Inter-Annual Changes Of Water Temperature In The Southern South China Sea's Continental Shelf: The Influence Of Enso On Malaysian Waters, Afifi Johari, Mohd Fadzil Akhir, Muhammad Naim Satar, Zuraini Zainol, Guo Jingsong
Journal of Marine Science and Technology–Taiwan
An extensive amount of data from the World Ocean Database (WOD) that covers the southern South China Sea (SSCS) were analysed to study the long-term trends and variations of the El-Nino Southern Oscillation (ENSO) event. The WOD data were selected from 1951 to 2010, which included the area within 0–10 °N and 100–117 °E. El-Nino and La-Nina anomaly results showed that the sea surface temperature anomalies (SSTa) trend of SSCS was higher during offset-El-Nino years and lower during offset-La-Nina years. Besides, the inter-annual vertical water temperature profile revealed that the deepening of the warmer water temperature occurred in February and …
The Eumedonine Genera Eumedonus H. Milne Edwards, 1834, And Gonatonotus White, 1847 (Crustacea: Brachyura: Pilumnidae) In Taiwan,
2021
Lee Kong Chian Natural History Museum, Faculty of Science, National University of Singapore, Singapore
The Eumedonine Genera Eumedonus H. Milne Edwards, 1834, And Gonatonotus White, 1847 (Crustacea: Brachyura: Pilumnidae) In Taiwan, Peter K. L Ng, Chia-Wei Lin
Journal of Marine Science and Technology–Taiwan
Two species of eumedonine crabs, Eumedonus zebra Alcock, 1895, and Gonatonotus nasutus Chia & Ng, 2000, are recorded from Taiwan, the former for the first time. Both are also new genera records for the island. Notes on variation are noted and their taxonomy briefly treated. The number of eumedonine species, all of which are obligate symbionts on echinoderms, known from the island is now seven genera and seven species.
An Analysis Of Consumer Evaluations Of The “Tagonoura Shirasu” Certification Under The Japan Geographical Indication Protection System,
2021
Department of Environmental Biology and Fisheries Science, National Taiwan Ocean University, 2, Pei-Ning Rd., Keelung, Taiwa
An Analysis Of Consumer Evaluations Of The “Tagonoura Shirasu” Certification Under The Japan Geographical Indication Protection System, Yu-Heng Lu, Takahiro Sajiki
Journal of Marine Science and Technology–Taiwan
Over time, the Geographical Indication (GI) protection system has been independently adopted in more than 100 countries worldwide. In Japan, the GI protection system has been operating since 2015 in response to a growing interest in local brands. Therefore, based on a questionnaire survey, we econometrically analyze the consumer evaluation of Shizuoka Prefecture’s Shirasu “Tagonoura Shirasu,” which is registered under the GI protection system. Shirasu is a collective term for long and narrow larvae such as anchovy (Engraulis japonicus), sardine (Sardinops melanostictus), or red-eye round herring (Etrumeus sadina). Based on the contingent valuation method, we clarified that consumers' additional willingness …
A Two-Stage Approach To Integrate Vessel Geo-Tracking Data And Logbooks For Monitoring Fishing Activity Of Coastal Fisheries In Waters Off Northwestern Taiwan,
2021
Department of Environmental Biology and Fisheries Science, National Taiwan Ocean University, Keelung, Taiwan
A Two-Stage Approach To Integrate Vessel Geo-Tracking Data And Logbooks For Monitoring Fishing Activity Of Coastal Fisheries In Waters Off Northwestern Taiwan, Yi-Jou Lee, Nan-Jay Su, Cheng-Hsin Liao, Wei-Chuan Chiang, Chun-Huei Li
Journal of Marine Science and Technology–Taiwan
Catch and fishing effort data are fundamental information to stock assessment and fisheries management, but difficult to obtain without the support of administration and sound fishery data collection system. This study integrated various sources of data from a simplified vessel geo-tracking system and logbooks from interviews with captains of coastal gillnet fisheries. We developed a two-step approach based on hierarchical cluster analysis to characterize the operation patterns and infer the fishing activities of the fishery. Results showed that the fishing effort in terms of operation duration could be estimated precisely for various vessel sizes, with catch composition and harvest information …
Effect Of Chlorine Dioxide On The Removal Of Sulfadimethoxine And Sulfamethoxazole In Freshwater And Seawater,
2021
Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan
Effect Of Chlorine Dioxide On The Removal Of Sulfadimethoxine And Sulfamethoxazole In Freshwater And Seawater, Zhen-Hao Liao, Dai-Chee Ng, Yu-Sheng Wu, Fan Hua Nan
Journal of Marine Science and Technology–Taiwan
This study aimed to understand the fate of sulfonamides (SAs) under dark condition in a laboratory-scale aquatic system, and evaluate the removal of SAs by using Chlorine dioxide. Based on the mass spectrometry quantification, our results have shown that two sulfonamides were transformed at very slow rate in the dark. The 180 day degradation efficiencies (%) of sulfadimethoxine (SDM) in freshwater and seawater were 6.37 ± 2.56 and 4.38 ± 3.43, respectively, while those of sulfamethoxazole (SMX) in freshwater and seawater were 7.81 ± 2.15 and 6.60 ± 2.69, respectively. In the treatment of Chlorine dioxide for the removal of …
Long-Term Observations Of Interannual And Decadal Variation Of Sea Surface Temperature In The Taiwan Strait,
2021
Center of Excellence for Ocean Engineering, National Taiwan Ocean University, Keelung, Taiwan, R.O.C.
Long-Term Observations Of Interannual And Decadal Variation Of Sea Surface Temperature In The Taiwan Strait, Ming-An Lee, Wei-Po Huang, Yi-Lo Shen, Jinn-Shing Weng, Bambang Semedi, Yi-Chen Wang, Jui-Wen Chan
Journal of Marine Science and Technology–Taiwan
Long-term observations of interannual and decadal variation of sea surface temperature (SST) in the Taiwan Strait (TS) were studied for the period 1870–2018; the climatology data were obtained from the Met Office Hadley Centre, UK. In the study period, the highest annual mean and lowest SST observed were 25.3°C in 1998 and 22.4°C in 1919, respectively. Six distinct regimes were identified. The first regime of fairly stable or slightly cooling SST lasted through the 1920s. The two regime shifts of 1919 to 1945 and 1976–1977 to 1998 led to the two fast warming trends of 2.0°C in 26 years, from …
Experimental Investigation And Modeling Of The Response Surface Methodology For The Optimization Of A Multiloop Heat Pipe,
2021
Department of Navigation, Taipei University of Marine Technology, New Taipei City, Taiwan
Experimental Investigation And Modeling Of The Response Surface Methodology For The Optimization Of A Multiloop Heat Pipe, Dar-Sun Liou
Journal of Marine Science and Technology–Taiwan
Considering thermohydrodynamic instabilities in the design of cooling systems has become a trend, which has led to the evolution of thermal management. However, such instabilities, which cause flow perturbations, are difficult to explain by using physical theories. The aim of this study was to use a parameter-based modeling technique, namely the response surface methodology (RSM), to characterize the dynamics of multiloop heat pipes (MLHPs) under various heat loads. The RSM, which is based on statistics, was used to determine the relationship between the design parameters and thermal responses of MLHPs, which are represented using polynomials. Th aim of our RSM …
Supply Chain Inventory Model With Markov Chain Demand,
2021
Department of industrial engineering and management, National Taipei University and Technology
Supply Chain Inventory Model With Markov Chain Demand, Zhi-Ping Lin, Su-Ping Ho
Journal of Marine Science and Technology–Taiwan
This study aims to develop a new one-vendor multiple-buyers integrated inventory model. We believe that our proposed model can forecast the demand of all buyers in the coming future by using data that have already existed and to minimize the total cost-for both buyers and vendors. In recent days, the Markov chain approach has played one of the critical methods of demand forecasting in the Supply Chain Management (SCM) field. The proposed model of this study is to analysis the demand of all buyers in one specific season that was impacted by the demand in the same season from last …
Fire Resistance Of Steel Connectors Of Precast Lightweight Concrete Walls,
2021
epartment of Fire Science, WuFeng University, Chiayi County, Taiwan, R.O.C.
Fire Resistance Of Steel Connectors Of Precast Lightweight Concrete Walls, Jen-Hao Chi, Maochieh Chi, Yue-Lin Huang
Journal of Marine Science and Technology–Taiwan
In this study the fire test was performed to investigate the mechanic behaviors and failure patterns of precast normal weight concrete (NWC) and lightweight concrete (LWC) walls with three types of commonly used steel connectors, namely dry (61), wet (81), and bearing (56E) connectors. For the LWC wall specimens, on lateral application of tension, the cracking load values of the dry, wet, and bearing-type connectors were 95.1%, 86.3%, and 83.0%, respectively, of the original loads, and their ultimate load values were 81.6%, 90.7%, and 85.0%, respectively, of the original. In the shearing test after the fire resistance test, the cracking …
Differential Evolution Algorithm For Ship Path Planning In Open Waters,
2021
College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, China
Differential Evolution Algorithm For Ship Path Planning In Open Waters, Yu-Tao Kang, Wei-Jiong Chen, Jin-Hui Wang
Journal of Marine Science and Technology–Taiwan
A general approach to the derivation of simple yet accurate formulas for identifying bandpass nonlinear channels in or-thogonal frequency-division multiplexing (OFDM) systems is proposed in this paper. The OFDM is an widely adopted tech-nique for wideband communication applications. An OFDM signal could be highly vulnerable to nonlinearities in a com-munication link. This makes proper estimation of the nonlin-ear channel essential for an OFDM system. A nonlinear bandpass communication channel is commonly described by a complex Voletrra series, in which the task of nonlinear channel identification is to determine the Volterra kernels. This task can become very difficult when the order …
Integrated Simulation Of Virtual Prototypes And Control Algorithms Of Unmanned Surface Vehicles Based On A Robot Operating System,
2021
Research Institute of Marine Systems Engineering, Seoul National University, Seoul, Republic of Korea
Integrated Simulation Of Virtual Prototypes And Control Algorithms Of Unmanned Surface Vehicles Based On A Robot Operating System, Hye-Won Lee, Joo-Hyun Woo, Myung-Il Roh, Seung-Ho Ham, Luman Zhao, Sol Ha, Nak-Wan Kim, Chan-Woo Yu
Journal of Marine Science and Technology–Taiwan
Unmanned surface vehicles (USVs) require autonomous software with a high level of liberalization and automation to complete various missions. Therefore, experimental verification and validation of this software at the initial design stage are essential. However, such experiments are impossible before the actual hardware is developed, and the creation of an external environment for the mission requires substantial cost and time. In this study, virtual prototypes of the mission environment and hardware for the USV are developed. Then, a simulation environment for testing the control algorithms in the autonomous software is constructed. Data communication with the USV hardware is necessary for …
Identification Of Nonlinear Channels In Bandpass Communication Systems With Ofdm Inputs,
2021
Department of Electrical Engineering, National Taiwan Ocean University, Keelung, Taiwan, R.O.C.
Identification Of Nonlinear Channels In Bandpass Communication Systems With Ofdm Inputs, Jen-Ho Cheng, Ching-Hsiang Tseng
Journal of Marine Science and Technology–Taiwan
A general approach to the derivation of simple yet accurate formulas for identifying bandpass nonlinear channels in or-thogonal frequency-division multiplexing (OFDM) systems is proposed in this paper. The OFDM is an widely adopted tech-nique for wideband communication applications. An OFDM signal could be highly vulnerable to nonlinearities in a com-munication link. This makes proper estimation of the nonlin-ear channel essential for an OFDM system. A nonlinear bandpass communication channel is commonly described by a complex Voletrra series, in which the task of nonlinear channel identification is to determine the Volterra kernels. This task can become very difficult when the order …
Recruitment Patterns Of The Fouling Community On Eelgrass In Long Island Sound,
2021
Albion College
Recruitment Patterns Of The Fouling Community On Eelgrass In Long Island Sound, Diana Lancaster
Department of Marine Sciences
Abstract The seagrass Zostera marina (eelgrass) is typically found in shallow protected areas of portions of eastern Long Island Sound (LIS). Although the species and its associated ecosystem have been well studied in many places, work in LIS has been limited. A field study was conducted to assess the fouling communities associated with eelgrass beds around Pine Island, in eastern LIS. Samples were collected from four sites between July and October, 2011. A total of 15 species of fouling organisms were found on eelgrass leaves throughout the study period. Recruitment patterns varied spatially and temporally. Differences in the composition of …
Kelp Morphology And Herbivory Are Maintained Across Latitude Despite Geographic Shift In Kelp-Wounding Herbivores,
2021
University of California - Berkeley
Kelp Morphology And Herbivory Are Maintained Across Latitude Despite Geographic Shift In Kelp-Wounding Herbivores, Nicholas P. Burnett, Eric J. Armstrong, Rosemary Romero, Charlotte C. Runzel, Richelle L. Tanner
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Herbivores can drastically alter the morphology of macroalgae by directly consuming tissue and by inflicting structural wounds. Wounds can result in large amounts of tissue breaking away from macroalgae, amplifying the damage initially caused by herbivores. Herbivores that commonly wound macroalgae often occur over only a portion of a macroalga’s lifespan or geographic range. However, we know little about the influence of these periodic or regional occurrences of herbivores on the large-scale seasonal and geographical patterns of macroalgal morphology. We used the intertidal kelp Egregia menziesii to investigate how the kelp’s morphology and the prevalence of two prominent kelp-wounding herbivores …
Blue Carbon In South Florida's Mangroves: The Role Of Large Roots And Necromass,
2021
Louisiana State University and Agricultural and Mechanical College
Blue Carbon In South Florida's Mangroves: The Role Of Large Roots And Necromass, Zoë I. Shribman
LSU Master's Theses
Blue carbon sequestration and storage in mangroves largely result from belowground biomass allocation in response to flooded anaerobic soil conditions and nutrient availability. Biomass allocation to belowground roots is a major driver of mangrove soil formation and organic matter accumulation leading to blue carbon storage potential. Belowground biomass sampling in mangroves is labor intensive, limiting data availability on biomass stocks, particularly for large roots (>20 mm diameter) and necromass (dead roots). The mangrove nutrient model (NUMAN) uses mostly literature values to parameterize a soil cohort approach to simulate depth distribution of root mass and organic carbon concentration. We evaluated …
Otoliths Of South-Western Australian Fish: A Photographic Catalogue,
2021
Department of Primary Industries and Regional Development, Western Australia
Otoliths Of South-Western Australian Fish: A Photographic Catalogue, Chris Dowling, Kim Smith, Elaine Lek, Joshua Brown
Fisheries Research Reports
Due to the species-specific nature of otoliths and given they are often the only part of the fish preserved when fish die, otolith catalogues can be used in numerous applications, such as diet studies in fish eating animals, including pinnipeds, fish and sea birds; archaeological purposes such as reconstructing indigenous people’s diets from otoliths found in middens or evolutionary history of fish species by comparing fossilized otoliths. Given the unique mixture of subtropical and temperate fish, including many endemic species that occur off the southwest corner of WA having a catalogue for this area is extremely important for people working …
Epiphyte Identification On Commercially Grown Kappaphycus Alvarezii In Eastern Samar, Philippines [Research Note],
2021
Division of Natural Science and Mathematics, University of the Philippines Visayas Tacloban College, Tacloban City, Leyte, Philippines
Epiphyte Identification On Commercially Grown Kappaphycus Alvarezii In Eastern Samar, Philippines [Research Note], Ma. Carla Angelica Deladia, Leni Yap-Dejeto, Kenneth Abuda, Margarita Dela Cruz
The Philippine Agricultural Scientist
The decline in production and quality of Kappaphycus alvarezii is primarily associated with occurrence of "ice-ice" disease and epiphyte infestations. K. alvarezii var. tambalang (brown) in the nursery farms of Balangiga and Lawaan, E. Samar harbored such infestations. This study identified the dominant Epiphytic Filamentous Algae (EFA) on the seaweeds in these farms using microscopic morphological characteristics. Microscopic examinations revealed that the main epiphyte in the farms studied was Melanothamnus apiculatus (Hollenberg) Díaz-Tapia & Maggs (former: Neosiphonia apiculata (Hollenberg) Masuda et Kogame). The epiphytes observed have rhizoids separated from the pericentral cells, unicellular trichoblasts, globose cystocarp and tetrasporangia arranged in …
Connecting Communities To Coastal Resilience: Enhancing Sustainability Through Public Participation In Salt Marsh Management And Restoration In Suffolk County, Ny,
2021
CUNY Graduate Center
Connecting Communities To Coastal Resilience: Enhancing Sustainability Through Public Participation In Salt Marsh Management And Restoration In Suffolk County, Ny, Jennifer L. Mcgivern
Dissertations, Theses, and Capstone Projects
Coastal resiliency is becoming significantly more critical to the livelihood of coastal communities as the frequency and intensity of storm events increases and is exacerbated by rising sea levels due to climate change. In October 2012 Superstorm Sandy impacted the New York-New Jersey area costing over $70 billion in storm damages and 147 lives lost, as storm surges surpassed record highs for the region. Protruding more than 100 miles into the Atlantic Ocean with over 1,000 miles of shoreline, Long Island is particularly vulnerable to the increasingly ferocious and numerous storms as well as the rising sea levels that climate …
