Marine Environments
Marine Environments - Related Videos
13:51
Analyzing Gene Expression from Marine Microbial Communities using Environmental Transcriptomics
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Cited by 60 •
2009
We present a method for generating cDNA from environmental mRNA. In general, total RNA is first collected from the environment, rRNA is selectively removed, mRNA is selectively amplified, and cDNA synthesized from the enriched mRNA pool is sequenced. Recovered sequences can be annotated using standard bioinformatics techniques to identify the expressed genes.
11:26
Ecotoxicological Method with Marine Bacteria Vibrio anguillarum to Evaluate the Acute Toxicity of Environmental Contaminants
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Cited by 10 •
2017
This work describes a new protocol to assess the ecotoxicity of pollutants, including emerging contaminants such as nanomaterials, using the marine bacterium Vibrio anguillarum. This method allows for the determination of the LC50, or mortality, the concentration that causes a 50% decrease in bacteria culturability, after a 6 h exposure.
08:43
Aerobic Biodegradation Testing of Materials Using a Natural Marine Seawater Inoculum and Closed Loop Respirometer
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2025
The protocol describes standard operating procedure for testing potentially biodegradable materials both synthetic and natural under aerobic conditions using a natural seawater inoculum and automated closed loop respirometry system.
16:03
A Fish-feeding Laboratory Bioassay to Assess the Antipredatory Activity of Secondary Metabolites from the Tissues of Marine Organisms
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Cited by 6 •
2015
This bioassay employs a model predatory fish to assess the presence of feeding-deterrent metabolites from organic extracts of the tissues of marine organisms at natural concentrations using a nutritionally comparable food matrix.
15:39
Characterization of Calcification Events Using Live Optical and Electron Microscopy Techniques in a Marine Tubeworm
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Cited by 2 •
2017
We demonstrate the use of various microscopy methods that are useful in observing the calcification of a tubeworm, Hydroides elegans, as well as locating and characterizing the first calcified material. Live microscopy and electron microscopy are used together to provide functional and material information that are important in studying biomineralization.
FAQs
Engineering performance depends on how local conditions combine, not on salinity alone. Salinity, temperature, pressure, currents, tides, light availability, and dissolved oxygen can vary with depth and location, changing material behavior and system performance. Engineers therefore match designs to the specific marine setting, whether a coastal zone, estuary, open-ocean site, or seafloor.
Depth changes the environmental demands placed on marine equipment. Pressure becomes a central consideration for subsea vehicles and sensors, while currents, light availability, and dissolved oxygen may differ from conditions nearer the surface. Accounting for these depth-related changes helps engineers predict performance and select systems suited to the intended operating zone.
Corrosion and biofouling can affect marine systems through different pathways, so engineers must consider both rather than treating them as one problem. Corrosion is associated with the saltwater setting and material behavior, whereas biofouling reflects biological accumulation on equipment or structures. Addressing these separate threats supports durable offshore structures, sensors, and energy systems.
Wave loading and changing currents create mechanical demands that differ across marine locations. Offshore structures and coastal defenses must be evaluated against these forces, while subsea vehicles and sensors must operate as conditions shift around them. Linking site conditions to expected loading helps engineers design systems that remain functional in dynamic water environments.
Before selecting a marine engineering system, engineers can characterize the relevant site conditions: salinity, temperature, pressure, currents, tides, light availability, and dissolved oxygen. They then relate those conditions to likely material behavior and system performance, including exposure to corrosion, biofouling, wave loading, and changing currents. This assessment guides design choices and resilience planning.
Marine-environment analysis supports a wide range of engineering applications, including offshore structures, subsea vehicles, coastal defenses, ports, sensors, and marine energy systems. The same environmental assessment can serve different design goals: structural resilience offshore, reliable operation for subsea equipment, and effective infrastructure planning along coasts. This breadth makes marine conditions a core engineering input.
Beyond equipment design, these studies inform sustainable resource use, habitat protection, environmental monitoring, and resilient infrastructure planning. Engineers can use knowledge of local physical conditions and their variation to support decisions that account for both system performance and surrounding marine settings. This broader context connects engineering projects with protection of habitats and long-term coastal and marine resilience.