Sentences with word «mesopelagic»

«High levels of microplastics found in Northwest Atlantic fish: New study finds microplastics in the stomachs of 73 percent of mesopelagic fish caught in the Northwest Atlantic — one of the highest levels globally.»

Recent studies have detected the presence of significant levels of dioxins in the commercial shrimp Aristeus antennatus [253] and significant levels of persistent organic pollutants in mesopelagic and bathypelagic cephalopods [254].

The significance of the photophores on the underside of mesopelagic fishes has long been thought to provide camouflage against predators swimming below, helping them to blend in with any residual light shining down from the surface.

«The high ingestion rate of microplastics by mesopelagic fish that we observed has important consequences for the health of marine ecosystems and biogeochemical cycling in general.»

The researchers said that an important transition in the deep sea is where the penetration of light ends dividing the relatively vibrant mesopelagic from the dark bathypelagic part of the ocean below approximately 1,000 m.

Pete studies marine fish ecology in the California Current System, with a focus on mesopelagic fishes.

Most mesopelagic species (found at > 200m depth) are either red or black (Johnsen, 2005).

Every year, their factory ships are vacuuming up bigger quantities of small mesopelagic crustaceans such as copepods and krill.

Within the past year, Norway and Pakistan issued licenses to begin mesopelagic fishing operations.

The researchers caught mesopelagic fish at varying depths, then examined their stomachs for microplastics back in the lab.

Despite their important role in marine ecosystems, mesopelagic fish have been relatively understudied in the context of microplastics.

Through these vertical movements, mesopelagic fish play a key role in the cycling of carbon and nutrients from the surface to the deep sea — a process known as biogeochemical cycling.

The study, published today in open - access journal Frontiers in Marine Science, found microplastics in the stomachs of nearly three out of every four mesopelagic fish caught in the Northwest Atlantic — one of the highest levels globally.

Mesopelagic fish serve as a food source for a large variety of marine animals, including tuna, swordfish, dolphins, seals and sea birds.

Lanternfishes, which inhabit the same mid-water, or mesopelagic, area of the ocean, have diversified into more than 250 species.

«Archaeal Dominance in the Mesopelagic Zone of the Pacific Ocean.»

Females feed on squid in the mesopelagic zone, which is below 650 feet it is surmised to avoid their predators.Males do not feed during breeding season.

Females feed on squid in the mesopelagic zone, which is below 650 feet it is surmised to avoid their predators.

Using oxygen sensors on more than 100 profiling floats distributed globally, scientists have assessed, for the first time, oxygen consumption rates in the mesopelagic zone beneath the ocean's surface, where too little sunlight penetrates to support photosynthesis, and the carbon export that fuels this respiration [Hennon et al., 2016].

Fish occupying the ocean's mesopelagic zone (between 200 and 1,000 meters of depth) swim daily between the deep sea, where calcium is abundant, and the surface, where they release the carbonate.

The shifting seafloor turned out to be mesopelagic fish and other animals, making their nightly migration to and from the surface.

Applied Ocean Physics & Engineering Dept., biological pump, Biology Dept., jellies, krill, Marine Chemistry & Geochemistry Dept., mesopelagic, ocean's twilight zone, salps, tag

But the new study, detailed in the April 27 issue of the journal Science, finds that not all of this carbon makes it past the region of the ocean known as the mesopelagic or «the twilight zone» — roughly 300 to 3,000 feet below the surface where there isn't enough light for photosynthesis — which acts as a gateway to the deep ocean below.