ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
Communications between two autonomous vehicles has been always an important challenge, especially when one of the vehicles is intended for conducting submerged navigation most of its operational time. Underwater communications become in that case the one most common and feasible way for allowing data ...
The collapse of the Atlantic cod fishery in the 1990s devastated the economies of many coastal Newfoundland communities. While many have survived through a combination of a much reduced fishery, government funding, and off shore or out of province employment, none of these are sustainable long-term ...
As fishing has become more industrialized and wild fish stocks increasingly depleted, aquaculture production has grown rapidly to address the shortfalls in capture fisheries and limitations to long-term aquaculture success. One such shortfall is the need to produce a suitable, sustainable, substitute ...
We review opportunities, impediments, regional scope and principles for a Canadian contribution to an Integrated Atlantic Ocean Observing System (IAOOS) in the context of the Galway Alliance. This contribution should build on what exists, plan ahead for data management and data access, be flexible and ...
National Research Council Canada (NRC) is collaborating with College of the North Atlantic (CNA) to develop an ocean wave-driven pump to supply the CNA shore-based aquaculture centre in Lord's Cove, Newfoundland. NRC provides a combination of physical model testing under controlled laboratory conditions ...
An autonomous underwater vehicle (AUV) ""Slocum Glider"" was deployed on the South coast of Newfoundland to collect oceanographic data from surface to 200 m depth. Between 7 March and 21 March 2012, the CTD mounted on the glider measured temperature, salinity, and dissolved oxygen at different depths ...
Bream (Abramis brama orientalis) is one of the most commercially valuable fish in the Caspian Sea. The aim of this study was to compare levels of genetic polymorphism between wild and farmed Bream populations using seven microsatellite loci. Genetic diversity was investigated by studying samples collected ...
This study was carried out to investigate the genetic diversity and population structure of 90 specimens of Oxynoemacheilus argyrogramma collected from Sepidbarg, Gamasiab and Ghaleji rivers, in the west of Iran. Analyses using three microsatellite loci indicated that the average number of alleles in ...
A remote fish finder system for effective set-net fishery, which enable to visualize as well as recognize catch amount and the fish kind, is proposed in this paper. In order to improve fishing efficiency and obtain the highest possible profit of set-net fishery, set-net monitoring is needed by coastal ...
In this paper, we present a non-invasive method of counting fish in their natural habitat using automated analysis of video data. Our approach uses three modular components to preprocess, detect, and track the fish. The preprocessing reduces noise present in the image while enhancing the fish using ...
Traditionally, fish stock assessment is a time-consuming, expensive, and invasive task, since fish are caught and counted using research vessels. Therefore, in a joint project a non-invasive, acoustic-optical Underwater Fish Observatory (UFO) is proposed and developed. The UFO counts and classifies ...
Development of a new generation of multifunctional sensor systems is underway to address ocean monitoring challenges. These range from more precise monitoring of the marine environment to an improved management of fisheries and, among other things, address improved life cycle cost-efficiency. These ...
This study compared the effectiveness of a low seabed impact footgear versus a traditional rockhopper footgear on identical inshore Vónin shrimp trawls. The experimental trawl used in this study was designed to be low seabed impact through the reduction of contact area of the footgear by replacing ...
Under exploitation and environmental change, it is essential to assess the sensitivity and vulnerability of marine ecosystems to such stress. A species’ response to stress depends on its life history. Sensitivity to harvesting is related to the life history “fast–slow” continuum, where “slow” species ...
Vandalism of data buoys is a common and significant challenge across many buoy arrays. From accidental interference during fishing activities to deliberate desecration, data buoys endure a wide range of physical extremes from human activity, in addition to powerful environmental forces. In regions popular ...
The goal of the work presented here is to influence the overall behaviour of specific animal societies by integrating computational mechatronic devices (robots) into those societies. To do so, these devices should be accepted by the animals aspart of the society and/or as part of the collectively formed ...
Since marine organisms are tightly coupled to the properties of the turbulent ocean fluid, the locations of critical habitat can change rapidly in time and space. Historically it has been difficult to measure these dynamic properties, but advances in ocean observing technologies allow us to measure ...
Gesture-to-sound mapping is generally defined as the association between gestural and sound parameters. This article describes an approach that brings forward the perception–action loop as a fundamental design principle for gesture–sound mapping in digital music instrument. Our approach considers the ...
The United States Integrated Ocean Observing System (IOOS®) is a user-driven, coordinated network of people, organizations, and technology that generate and disseminate continuous data about our coastal waters, Great Lakes, and oceans supported by strong research and development activities. IOOS® is ...
While the genetic basis to plate morph evolution of the three-spined stickleback (Gasterosteus aculeatus) is well described, the environmental variables that select for different plate and spine morphs are incompletely understood. Using replicate populations of three-spined sticklebacks on North Uist, ...