This Website offers information and resources for studying
seafloor animals, hydrothermal vents, mid-ocean ridges, axial volcano, lava flow, and tools and technology.
«Cameras have recorded
seafloor animals up to 150 km away from the open sea on Amery ice shelf but only photos of tiny area were taken through drill hole,» Katrin Linse, senior biodiversity biologist with the British Antarctic Survey, told Earther.
«Sunken logs create new worlds for
seafloor animals.»
When
seafloor animals die off, the energy in the ecosystem flows into microbes and jellyfish, a trend Jackson refers to as «the rise of slime.»
Some scientists think that carbon dioxide released by the impact would have acidified the oceans, contributing to the extinctions, so the drill team will look at whether
seafloor animals just after the impact were species that tolerate low pH.
The seafloor animals of the Southern Ocean shelf have long been isolated by the deep ocean surrounding Antarctica and the Antarctic Circumpolar Current, with little scope for southward migration.
«More «losers» than «winners» predicted for Southern Ocean
seafloor animals.»
Not exact matches
The device is an infrared and visible - light camera that will sit on a tripod on the
seafloor, emitting light on a wavelength believed to be invisible to most sea
animals.
The findings are relevant to assessing the possible ecological impacts of
seafloor mining — scientists must account for the uniqueness of local geology and chemistry and not assume that a common supply of
animal larvae will colonize and restore neighboring habitats.
When Antonio Pusceddu of the Marche Polytechnic University in Italy and his colleagues found the Loricifera, they assumed the
animals had fallen to the
seafloor after dying.
For decades, sensors will gather data on water chemistry, currents, photosynthesis,
animal activity, and
seafloor eruptions and earthquakes.
They fished out three of the balls, hollow spheres.2 to.9 inch across, which turned out to consist of a thin layer of invertebrates called bryozoans,
animals that normally live attached to the
seafloor.
The selective extinction of large - bodied
animals could have serious consequences for the health of marine ecosystems, the scientists say, because they tend to be at the tops of food webs and their movements through the water column and the
seafloor help cycle nutrients through the oceans.
Possibilities include the creation of de facto marine reserves as fish cluster under the fields of floating turbines, loss of birds that fly into the turbines, entanglement of sea creatures in cables used to tether the turbines to the
seafloor, and disruption of movement patterns of underwater
animals.
Many researchers blame an asteroid impact, but geologist Gregory Retallack of the University of Oregon has suggested that methane burps from below the
seafloor produced a «postapocalyptic greenhouse» that drained oxygen from the atmosphere, leaving
animals gasping.
Seals diving for their dinner near Antarctica have surfaced with an extra morsel: information, gathered by electronic tags on the
animals» heads, about the shape of the
seafloor there.
Jun - Yuan Chen of the Nanjing Institute of Geology and Paleontology and his colleagues collected and studied samples of Vernanimalcula guizhouena, a microscopic
animal that probably moved along the
seafloor sucking in bacteria for food.
More precisely monitoring dolphins with
seafloor recordings could provide new insight into how these
animals respond to environmental problems such as oil spills and the long - term effects of climate change.
We eat a lot of
animals that live on the
seafloor, such as crabs.
Coral is a stationary
animal that slowly grows on
seafloors over tens and even hundreds of years.
«What keys the
animals might use to time coordinated movement when at the
seafloor, which would lack light at many depths, is... unknown.»
The lack of oxygen on the local
seafloor kept the area free of bottom - dwelling scavengers, and sediment quickly covered the
animals» corpses, preserving them in unprecedented detail.
In the recent studies, researchers showed that this behavior happens for extensive periods of time at or near the
seafloor, that it occurs in the presence of concentrations of sand lance (a preferred prey fish), and that the behavior is accompanied by the expansion of the
animal's ventral (throat) pleats.
The first Ediacaran to begin crawling around would have discovered a world devoid of predatory
animals, with a
seafloor covered either in thick bacterial mats or toxic sediment and, possibly, a climate thawing from a worldwide glaciation event known as «Snowball Earth.»
Finally, they used a
seafloor - crawling robot, the Benthic Rover, to measure the amount of oxygen being consumed by
animals and microbes in the sediment.
A new paper by MBARI researcher Ken Smith and his colleagues shows that population booms of algae or
animals near the sea surface can sometimes result in huge pulses of organic material sinking to the deep
seafloor.
Crittercam footage also showed for the first time a head - to - head orientation for two
animals that were side - rolling at the
seafloor.
The team, which included other geochemists, palaeoecologists and geologists from UCL and the universities of Edinburgh, Leeds and Cambridge, as well as the Geological Survey of Namibia, analysed the chemical elemental composition of rock samples from the ancient
seafloor in the Nama Group - a group of extremely well - preserved rocks in Namibia that are abundant with fossils of early Cloudina, Namacalathus and Namapoikia
animals.
Because of their combined mass, these
animals also play a major role in the global cycling of carbon from the atmosphere to the
seafloor, she added.
Global peaks in abundance and biomass of
animals at mid slope depths occur because this is the depth range where the vertically migrating
animals are most easily captured by fishes that live at or near the
seafloor.
They found that more than half of all the fishes living on the
seafloor get their energy from
animals that otherwise go back to the surface, and not from settling particles.
This photomontage shows some of the small
animals that colonized bundles of acacia wood that sat on the deep
seafloor, 3,200 meters below the surface, for five years (note penny for scale).
Even though all of the bundles contained exactly the same type of wood and were placed on the
seafloor at the same time, within a few tens of meters of each other, there were huge differences in the numbers and types of
animals from one bundle to another.
Thus, this study adds to the growing body of evidence that, although the deep
seafloor may look flat and uniform, its
animal communities often vary considerably over both space and time.
Thus, hard woods or woods containing clam - repellent compounds, might last much longer than soft woods, and might provide less food for
animals on the nearby
seafloor.
Whatever the reason, these differences in colonization from one wood fall to another created a wide variety of habitats and
animal communities over a relatively small patch of
seafloor.
Those ecosystem changes slow decomposition that normally recycles plant and
animal matter back into the ecosystem after organisms die, resulting in more organic matter accumulating in
seafloor sediments, the researchers report February 10 in Science Advances.
Therefore, to be buried in limestone, the
animal must lie on the
seafloor — unusual for a dead bird.
But don't mistake the technosphere's contents for just «stuff»; it also encompasses human organizations and the environments that keep society functioning, like farmlands,
seafloor excavations, domesticated
animals and reservoirs.
«Foraminifera are single - celled
animals that float in the water column and live at the
seafloor.
Prof Joye said that oil and dead
animals coated the
seafloor to a depth of 4» in places.