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Leds To Replace Fluorescent Tubes For Growth Of Cultured Algae, Grace Alego, Christopher Bentley, Rebecca Smith, Darian Kelley, Richard Synder 2018 Virginia Institute of Marine Science

Leds To Replace Fluorescent Tubes For Growth Of Cultured Algae, Grace Alego, Christopher Bentley, Rebecca Smith, Darian Kelley, Richard Synder

Reports

Fluorescent bulbs are widely used for algal culture stocks and production in aquaculture operations. Metal halide lamps are also used for production tanks with significant electricity demand and heat production. LED technology promises lower operational costs with less energy waste as heat for equivalent light energy production. Re-tooling algal production facilities with new LED fixtures incurs significant expense that must be recaptured in savings over time. The initial cost, added to concerns over the unknown response of algae to LED light sources may both be factors inhibiting incorporation of this new technology. LED replacement tubes are available to retrofit fluorescent ...


Impacts Of A Multi-Trap Line On Benthic Habitat Containing Emergent Epifauna Within The Mid-Atlantic Bight, Cara C. Schweitzer, Romuald N. Lipcius, Bradley G. Stevens 2018 Virginia Institute of Marine Science

Impacts Of A Multi-Trap Line On Benthic Habitat Containing Emergent Epifauna Within The Mid-Atlantic Bight, Cara C. Schweitzer, Romuald N. Lipcius, Bradley G. Stevens

VIMS Articles

Alteration and degradation of benthic structure by fishing gear can impede efforts to manage fish stock sustainably. Although the impacts of mobile gear are well known, effects of passive gear (e.g. fish traps) upon structure have been little studied. We modified commercial traps for American lobster Homarus americanus and black sea bass Centropristis striata by attaching GoPro (R) cameras to ascertain the degree and nature of impacts to seafloor habitats. Customized traps were included within a line of 20 traps, deployed and retrieved according to standard commercial fishing practice. Less than 5% of traps landed directly on bedforms when ...


Growth Characteristics Of Newly Isolated Indonesian Microalgae Under Diferent Salinity, Michael A. Rice, Wa Iba, Gary H. Wikfors, Lucie Maranda 2018 University of Rhode Island

Growth Characteristics Of Newly Isolated Indonesian Microalgae Under Diferent Salinity, Michael A. Rice, Wa Iba, Gary H. Wikfors, Lucie Maranda

Michael A Rice

The aim of this study was to investigate the growth characteristics of microalgae strains isolated from
Kendari Bay and the Wanggu River estuary, Indonesia. The growth of the isolates, denoted as Kb1-2, Kb1-
3, Kb1-5, and Kb2-6, were evaluated under controlled conditions. A batch culture experiment of these
strains except Kb2-6 was conducted for 15 days under salinity levels of 20, 25, 30 and 35 gL-1. Tetraselmis
chui, Tisochrysis lutea and Chaetoceros neogracile were also culture and used as the growth references. Cell
density was measured every day and cell size was measured from 50 live cells during the logarithmic ...


Freshwater Aquaculture And Its Permitting In Rhode Island: Two Case Studies, Michael A. Rice, Joseph B. Haberek, David Beutel 2018 University of Rhode Island

Freshwater Aquaculture And Its Permitting In Rhode Island: Two Case Studies, Michael A. Rice, Joseph B. Haberek, David Beutel

Michael A Rice

In Rhode Island permits to conduct aquaculture, including freshwater aquaculture, are issued by the Coastal Resources Management Council (CRMC) as the designated lead agency by state law. However, by Rhode Island law, aquaculture is considered a form of agriculture. It is the responsibility and duty of the state aquaculture coordinator in CRMC to receive aquaculture applications and coordinate the review of these applications through the multiple federal, state and local agencies that hold regulatory jurisdiction. Since most freshwater aquaculture is conducted on private lands rather than in public trust waters of the state, there is no leasing review. If the ...


Freshwater Aquaculture And Its Permitting In Rhode Island: Two Case Studies, Michael A. Rice, Joseph B. Haberek, David Beutel 2018 University of Rhode Island

Freshwater Aquaculture And Its Permitting In Rhode Island: Two Case Studies, Michael A. Rice, Joseph B. Haberek, David Beutel

Michael A Rice

In Rhode Island permits to conduct aquaculture, including freshwater aquaculture, are issued by the Coastal Resources Management Council (CRMC) as the designated lead agency by state law. However, by Rhode Island law, aquaculture is considered a form of agriculture. It is the responsibility and duty of the state aquaculture coordinator in CRMC to receive aquaculture applications and coordinate the review of these applications through the multiple federal, state and local agencies that hold regulatory jurisdiction. Since most freshwater aquaculture is conducted on private lands rather than in public trust waters of the state, there is no leasing review. If the ...


Multi-Metric Conservation Assessment For The Imperiled Clinch Dace, Michael James Moore, Donald J. Orth, Eric M. Hallerman 2018 University of Missouri

Multi-Metric Conservation Assessment For The Imperiled Clinch Dace, Michael James Moore, Donald J. Orth, Eric M. Hallerman

Southeastern Fishes Council Proceedings

Planning frameworks allow managers to spatially prioritize actions to promote species conservation. Traditional aquatic conservation planning frameworks are often organized at the ecological community or ecosystem level, which often neglect imperiled taxa occupying species-poor assemblages. In this study, we develop a multi-metric conservation assessment for the 15 geographically distinct candidate conservation areas (CCAs) occupied by the imperiled Clinch Dace (Chrosomus sp. cf. saylori). Clinch Dace habitat is threatened by anthropogenic landscape alterations, especially for coal mining and timber harvest. Our framework used four metrics to assess the conservation value of each subpopulation of Clinch Dace namely: “habitat condition”, “viability”, conservation ...


Iuu Fishing: A Gateway To Transnational Crimes In Jamaica, Judy-Ann Icinda Neil 2018 World Maritime University

Iuu Fishing: A Gateway To Transnational Crimes In Jamaica, Judy-Ann Icinda Neil

World Maritime University Dissertations

No abstract provided.


Compliance And Enforcement For The Exclusive Economic Zone Fisheries Management In The United Republic Of Tanzania, Christian Alphonce Nzowa 2018 World Maritime University

Compliance And Enforcement For The Exclusive Economic Zone Fisheries Management In The United Republic Of Tanzania, Christian Alphonce Nzowa

World Maritime University Dissertations

No abstract provided.


Community-Based Organisations As An Approach To Effective Sustainable Artisan Fishing, Mary Mindi Wabit Epse Ngawana 2018 World Maritime University

Community-Based Organisations As An Approach To Effective Sustainable Artisan Fishing, Mary Mindi Wabit Epse Ngawana

World Maritime University Dissertations

No abstract provided.


Integrated Use Of Drones And Qr Codes As Complementary Components For Monitoring, Control And Surveillance Systems For Artisanal Fishing Vessels In Peru, Eduardo Israel Zamora Chung 2018 World Maritime University

Integrated Use Of Drones And Qr Codes As Complementary Components For Monitoring, Control And Surveillance Systems For Artisanal Fishing Vessels In Peru, Eduardo Israel Zamora Chung

World Maritime University Dissertations

No abstract provided.


Troubled Waters: Threats And Extinction Risk Of The Sharks, Rays And Chimaeras Of The Arabian Sea And Adjacent Waters, Rima W. Jabado, Peter M. Kyne, Riley A. Pollom, David A. Ebert, Colin A. Simpfendorfer, Gina M. Ralph, Shakha S. Al Dhaheri, K. V. Akhilesh, Khadeeja Ali, Mohamud Hassan Ali 2018 Old Dominion University

Troubled Waters: Threats And Extinction Risk Of The Sharks, Rays And Chimaeras Of The Arabian Sea And Adjacent Waters, Rima W. Jabado, Peter M. Kyne, Riley A. Pollom, David A. Ebert, Colin A. Simpfendorfer, Gina M. Ralph, Shakha S. Al Dhaheri, K. V. Akhilesh, Khadeeja Ali, Mohamud Hassan Ali

Biological Sciences Faculty Publications

The extinction risk of sharks, rays and chimaeras is higher than that for most other vertebrates due to low intrinsic population growth rates of many species and the fishing intensity they face. The Arabian Sea and adjacent waters border some of the most important chondrichthyan fishing and trading nations globally, yet there has been no previous attempt to assess the conservation status of species occurring here. Using IUCN Red List of Threatened Species Categories and Criteria and their guidelines for application at the regional level, we present the first assessment of extinction risk for 153 species of sharks, rays and ...


Managing Lake Fertility Within The Guidelines Of A Nutrient Management Plan And Based On Algal Nutrient Limitation, Bradley J. Austin, J. Thad Scott, Brian E. Haggard 2018 University of Arkansas, Fayetteville

Managing Lake Fertility Within The Guidelines Of A Nutrient Management Plan And Based On Algal Nutrient Limitation, Bradley J. Austin, J. Thad Scott, Brian E. Haggard

Technical Reports

The specific objectives were to first, monitor nutrients, algal biomass, and water clarity in lakes Cove, Spring, and Wedington. Second, evaluate whether algal growth in each of the lakes was limited by N, P, or both N and P. This research was conducted to help USFS better manage lake fertilization to maximize algal growth and improve the fisheries within these lakes.


The Effect Of Capture And Handling Stress In Lophius Americanus In The Scallop Dredge Fishery, Amelia M. Weissman, John W. Mandelman, David B. Rudders, James A. Sulikowski, 2018 Virginia Institute of Marine Science

The Effect Of Capture And Handling Stress In Lophius Americanus In The Scallop Dredge Fishery, Amelia M. Weissman, John W. Mandelman, David B. Rudders, James A. Sulikowski,

VIMS Articles

Capture and handling stress studies are considered a primary research priority, particularly for species and fisheries where discard rates are high, and/or for overfished stocks and species of concern. Lophius americanus, a commercially valuable finfish in New England, constitutes the second highest bycatch species within the sea scallop dredge fishery. Despite its commercial importance, no data exists on the capture and handling stress of monkfish for any gear type. Given these shortcomings, our goals were to evaluate the stress response of monkfish captured in scallop dredge gear by evaluating physical, behavioural and physiological responses to scallop fishing practices. While ...


The Trophic Gradient In Lake Powell, Wayne A. Wurtsbaugh, G. Steinhart 2018 Utah State University

The Trophic Gradient In Lake Powell, Wayne A. Wurtsbaugh, G. Steinhart

Wayne A. Wurtsbaugh

From April 21 st to April 25th, 1995 students from Utah State University's FW 462 class sampled the trophic gradient in Lake Powell between Bullfrog (Mile 99) and Hite Marinas (Mile 144). We sampled at 3-12 stations along the gradient, depending on the parameter measured. The purpose of the trip was three-fold. First, the primary objective of the class was to provide field and laboratory experiences in aquatic ecology for the students. Secondly, we wished to provide data on the trophic environment that the endangered razorback sucker larvae from the Colorado River would encounter when the entered the reservoir ...


Snake River Sockeye Salmon Habitat And Limnological Research, David Teuscher, Doug Taki, Wayne A. Wurtsbaugh 2018 Utah State University

Snake River Sockeye Salmon Habitat And Limnological Research, David Teuscher, Doug Taki, Wayne A. Wurtsbaugh

Wayne A. Wurtsbaugh

Historically, thousands of Snake River Sockeye salmon returned to the Sawtooth Valley to spawn. Evermann (1896) reported that the Sawtooth Valley Lakes were teeming with red fish. Bjornn (1968) estimated that 4,360 sockeye returned to Redfish Lake in 1955. These numbers no longer exist. In the 1980's, less than 50 . Snake River sockeye salmon survived to spawn (Bowler 1990). Since 1990, only 14 sockeye have returned. Because of recent declines, the Shoshone-Bannock Tribes (SBT) petitioned the National - Marine Fisheries Service (NMFS) to list · Snake River sockeye as endangered. As a result, Snake River sockeye were listed and the ...


Snake River Sockeye Salmon Habitat And Limnological Research, David Teuscher, Doug Taki, Wayne A. Wurtsbaugh 2018 Utah State University

Snake River Sockeye Salmon Habitat And Limnological Research, David Teuscher, Doug Taki, Wayne A. Wurtsbaugh

Wayne A. Wurtsbaugh

Historically, thousands of Snake River Sockeye salmon returned to the Sawtooth Valley to spawn. Evermann (1896) reported that the Sawtooth Valley Lakes were teeming with red fish. Bjornn (196~) estimated that 4,360 sockeye returned to Redfish Lake in 1955. These numbers no longer exist. In the 1980's, less than 50 Snake River sockeye salmon survived to spawn (Bowler 1990). Since 19-90, only 13 sockeye have returned. Because of recent declines, the Shoshone-Bannock Tribes (SBT) petitioned the National Marine Fisheries Service (NMFS-) to list Snake River sockeye as endangered. As a result, Snake River sockeye were listed and the ...


Hydrogen Sulfide In Farmington Bay And The Great Salt Lake: A Potential Odor-Causing Agent, Wayne A. Wurtsbaugh, Amy Marcarelli 2018 Utah State University

Hydrogen Sulfide In Farmington Bay And The Great Salt Lake: A Potential Odor-Causing Agent, Wayne A. Wurtsbaugh, Amy Marcarelli

Wayne A. Wurtsbaugh

Odors from Farmington Bay and/or the Great Salt Lake frequently impact residents of Salt Lake and Davis counties, but the agent causing the problem and the origin of the odor is uncertain. Hydrogen sulfide (H2S) gas is produced in the deeper layers of water in Farmington Bay and Gilbert Bay in the Great Salt Lake, but these deeper waters are generally part of high salinity deep-brine layers that are resistant to wind mixing. Hydrogen sulfide has a "rotten-egg" odor and is a likely component contributing to the "lake stink." The goals of this study were to determine (1) whether ...


Effect Of Fish Size On Prey Size Selection In Gambusia Affinis, Wayne A. Wurtsbaugh, Joseph J. Cech Jr., James Compton 2018 Utah State University

Effect Of Fish Size On Prey Size Selection In Gambusia Affinis, Wayne A. Wurtsbaugh, Joseph J. Cech Jr., James Compton

Wayne A. Wurtsbaugh

Food size selection of the mosquitofish , Gambusia affinis affinis. was measured in aquaria using juvenile stages of the mosquito, Clllex tarsalb;, as prey. Fish size varied from recently born fry to large adult females. Food size selection was positively correlated with fish size. Mosquitofish fry (6-8 111m standard length) attacked and ate primarily first and second instar larvae. Fry attacked larger instars, but attack success on these was low (0 - 50%). Fish larger than 20 mm attached primarily pupae and third and fourth instar larva. No first instar mosquitoes were eaten. Attack success for these fish was above 65'Yr ...


Comparison Of The Aquatic Ecology Of Side-Canyons And The Main Channel Of Lake Powell, Wayne A. Wurtsbaugh, Kirsten L. Gallo 2018 Utah State University

Comparison Of The Aquatic Ecology Of Side-Canyons And The Main Channel Of Lake Powell, Wayne A. Wurtsbaugh, Kirsten L. Gallo

Wayne A. Wurtsbaugh

From 18-21 April 1996, students in a Utah State University class (Aquatic Ecology Laboratory; FW 560) measured limnological and fisheries characteristics in two side canyons (Halls Creek Bay and Moki Canyon) and the main channel of Lake Powell. Inclement weather precluded sampling of two other side canyons. Most of the sub-projects, directed by indiVIdual students, addressed the following two hypotheses: (1) productivity gradients existed from the inflows of the side canyons toward the main channel and; (2) productivity was higher in the side canyons than in the main channel of the lake. In most cases, parameters were measured at 3-5 ...


A Trophic Gradient Analysis Of Lake Powell: The 1994 Utah State University Aquatic Ecology Laboratory Analyses, Wayne Wurtsbaugh, Megan Barker, Ron Brunson, David Fogle, Scott Hawxhurst, Chad Mellison, Lis Phillips, Felipe Queiroz, Daniel Zamecnik 2018 Utah State University

A Trophic Gradient Analysis Of Lake Powell: The 1994 Utah State University Aquatic Ecology Laboratory Analyses, Wayne Wurtsbaugh, Megan Barker, Ron Brunson, David Fogle, Scott Hawxhurst, Chad Mellison, Lis Phillips, Felipe Queiroz, Daniel Zamecnik

Wayne A. Wurtsbaugh

From 9-11 April, 1994, the Aquatic Ecology Laboratory Class (FW462) of Utah State University sampled the upper reaches of Lake Powell to assess if a trophic gradient existed. We °ampled physical and chemical parameters (temperature, oxygen, conductivity, and total phosphorus), phytoplankton chlorophyll a, littoral and pelagic zooplankton biomass and composition, littoral and profundal benthic invertebrates, and fish abundance measured in the littoral zone (gill nets) and the pelagic zone (hydroacoustics). Data was collected along the upper 50 miles of the reservoir between Bullfrog and the Hite marina near the Colorado River inflow.

Our field trip was done just prior to ...


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