How to use planktonic in a sentence

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Sentence Examples In addition, the first planktonic graptolites evolved, though some species of graptolites became extinct. Thus, the resultant planktonic cephalopods are probably trapped, either evolutionarily or ontogenetically. It has been argued that stimulable bioluminescence potential is a useful, measurable proxy for planktonic biomass. The marine biostratigraphy is based upon microfaunas and floras, notably planktonic foraminifera and radiolaria. As a rule, there were no significant differences in antibiotic resistance between neustonic and planktonic bacteria. They get their nutrition from planktonic organisms brought in on the sluggish tides where the caves connect with the ocean. Many are planktonic like the diatoms and Sargassum, floating free near the water surface, and being carried along by the surface currents. Corals, some types of mollusk, and tiny planktonic organisms called foraminifers and coccolithophorids could all be affected. The planktonic centric diatom Actinocyclus nonnanhi was the primary vector of tracer nitrogen to benthic and water-column organisms. We describe a simple procedure to allow the broad nature of the organic substrates used for planktonic bacterial growth to be determined. This bacterial strategy is reasonable, since the above-mentioned advantage would be lost if the planktonic cell had peritrichous flagella. The team did not limit themselves to foraminifera but used other planktonic groups such as the coccoliths and radiolaria. Chalk, though it may include shell fragments, is predominantly composed of coccoliths from planktonic algae, forming fine-grained limestone. When the babies hatch, they are the size of a grain of rice. New hatchlings are planktonic for six to nine weeks. The depth is recognized as that of the lower photic zone, the reproductive depth for planktonic foraminifera. The marine life benefits from planktonic nutrients, which means the area is teeming with both Mediterranean and Atlantic species. Based on gastropods, bivalves, and planktonic foraminifera, Kilmer assigned this formation to the Turonian. Many polychaetes hatch into a particular type of planktonic larva, the trochophore, which later metamorphoses into a juvenile annelid. The Gracisce packstones contain a rich foraminiferal assemblage, composed of larger and planktonic foraminifera along with authigenic glauconite. Both adults and juveniles feed on benthic algae as well as on benthic and planktonic crustacea. Show More Sentences Much of this distinctiveness can now be ascribed to the influence of Actinocyclus normanii in both the planktonic and benthic food webs. Thus, the surface to volume ratio should be related to silicic acid flows in size-based biogeochemical models of planktonic ecosystems. Pelagic biogenic sediments consist of the fine-grained skeletal debris of marine planktonic and benthonic organisms. A mid-Albian age has been recorded from marine planktonic microfossils found in limestones at the lower levels of the Las Chilcas Formation. Also, other microfossils such as diatoms, radiolaria, and planktonic and benthic foraminifera are useful in certain parts of the Palaeocene. In the Early Ordovician, many-branched planktonic forms developed from the attached dendroids. Many benthic and nektonic organisms have a larval stage that is planktonic for several months. The bilge water could contain planktonic larvae picked up in Lisbon, Portugal and transported across the Atlantic to North America. The larvae are planktonic for 4 to 5 weeks after which time they metamorphose and settle on suitable substrates to begin their benthic life. This species also feeds on schools of small planktonic crustaceans, fish, squid or crab larvae by either skimming or engulfing. After a barnacle leaves its planktonic stage it crawls around the rocks, head down, feeling its way with a pair of sensory antennae. These larvae will also metamorphose into adults sooner than their long-armed brethren and thus are vulnerable to planktonic predators for a shorter period of time. It feeds on copepods, an abundantly-available planktonic crustacean that is rich in lipids and easy to catch when the sea is cold. Organisms that are planktonic throughout their life cycle are called holoplankton. Neritic waters are penetrated by varying amounts of sunlight, which permits photosynthesis by both planktonic and bottom-dwelling organisms. The major prey for small cod are planktonic crustaceans, notably hyperiid amphipods in the north and euphausiids on the Grand Bank. The biological aspects include descriptions of macrophytic, planktonic and benthic communities, reptiles, fish, marine birds and mammals. Harmful algal blooms can occur because the water flea eats the planktonic size native 'grazers' that would keep such blooms in control. This suggests that ISMN induces the transition of sessile biofilm cells to free-swimming planktonic cells. Like the rest of the world's seas, the Sargasso Sea has a population of the subsurface algae called coccoliths as well as planktonic foraminifera. Show More Sentences Whether we are witnessing an actual global decline or massive changes in planktonic distribution will require more study. The principal threat here, and to similar fisheries, such as that off the west coast of North America, is to planktonic larvae that fish eat. The spread within North America has also been very rapid due to downstream transport of planktonic larvae. These birds are most probably attracted by dense shoals of small pelagic fish feeding off abundant planktonic species. They occurred in low water periods, during summer, and were accompanied by the sudden disappearance of planktonic algae. Water samples were collected from permanent stations in Lake of the Woods for the assessment of water chemistry and the planktonic community. The distance planktonic larvae are transported from their location of hatching depends upon currents. Vendace feeds on planktonic crustaceans and insect larvae and the minerals washed into the area with the river water. I also believe new ideas such as planktonic oceanic seeding, to irreversibly fix CO2 to the ocean bed, need further investigation. The planktonic blooms I just mentioned kill the fish and contaminate the molluscs, making them dangerous for consumption. These include planktonic algae that can absorb very large amounts of CO2 from the atmosphere. It has a varied diet that includes planktonic crustaceans and small, schooling fish, like herring and capelin. The newly released larvae remain planktonic for a period ranging from 3 to 10 weeks, depending on the water temperature. The hyperiids are little crustaceans which are again entirely planktonic but are related to beach fleas and those laterally compressed wriggly things you find under stones. The invertebrate fauna includes many planktonic forms, particularly jellyfish and the stemless crinoid Saccoma, and also nektonic organisms such as cephalopods. The fish feed on planktonic crustaceans and insect larvae. Also, there are rarely planktonic foraminifers including non-keeled Globigerinids. Since it is not stated, it is not possible to determine if gear avoidance resulted in a failure to document the presence of the motile planktonic stages for some species. The Saguenay River merges with the St. Lawrence at the western end of the Laurentian Channel, a tongue of cold seawater that wells up with an enormous quantity of nutrients and planktonic crustaceans. Finally, coral reef POM constitutes a source of OM for planktonic invertebrates and planktonophagous fish. Show More Sentences Tiny shells of planktonic animals rain down from the surface waters of the ocean on to the deep sea-floor. They not only provide a source of food, but also generate nearly half of the oxygen in the atmosphere, derived from the photosynthetic process of planktonic microalgae and nearshore marine angiosperms and macroalgae. The planktonic graptolites remained diverse, with the Diplograptina making their appearance. Although mussels are valued as food, mussel poisoning due to toxic planktonic organisms can be a danger along some coastlines. Once an egg is fertilized, it is then planktonic, which is a collection of microorganisms that drift abundantly in fresh or salt water. These areas contain calcareous nannofossil, planktonic foraminifera, and terrestrial pollen. Biologically, polynyas are thought to be focal points for the intense production of herbivores that ensure the transfer of the solar energy fixed by planktonic and epontic algae to Arctic cod, seals, polar bear and humans. Just to repeat something I said earlier, it's quite a fascinating biological mystery how these infective planktonic stages, tiny little things, manage to find their hosts so effectively. The traditional culture is suited to treat acute infections caused by single cell or planktonic bacteria. And, the same hydraulic effects that form these weedlines also gather planktonic organisms. The study of plankton is termed planktology and a planktonic individual is referred to as a plankter. The adjective planktonic is widely used in both the scientific and popular literature, and is a generally accepted term. This combination of structures enables lobates to feed continuously on suspended planktonic prey. Their results indicated that they feed on various planktonic organisms, but especially microscopic jellyfish. Coregonus vandesius inhabits deep, cold lakes, and uses planktonic crustaceans, such as copepods, as its primary food source. The nektic, nektobenthic and planktonic communities of the East Baltic Silurian. Brachyuran larval culture and subsequent description will lead to correct identification of planktonic zoeae obtained from marine samples. The high content of silicates in maar lake waters favors the growth of unicellular planktonic algae of the Diatoms group, which elaborate a siliceous external skeleton. Most medusae are slow-swimming, planktonic animals. However, the species can tolerate a wide range of temperatures and the free-swimming planktonic larvae can spend up to three weeks in the water column before finding a suitable substrate to settle on. Show More Sentences The eggs hatch after 8 to 12 days in water between 16 and 20 °C. They release a ciliated larva called coracidium which is ingested by a small planktonic aquatic crustacean: the copepod. In this paper we provide results of the taxonomic study of planktonic foraminiferal assemblages from sediments across the KwaZulu-Natal Bight. Most of these two classes occupy a wide diversity of subhabitats, with simple reproductive strategies, external fertilization, and planktonic larvae to effect wide dispersion. Thus, the calcareous oozes include globigerina ooze, containing the shells of planktonic foraminifera, and pteropod ooze, made up chiefly of the shells of pelagic mollusks. In laboratory studies, the planktonic stage was of 4-7 day duration. Though many planktonic species are microscopic in size, plankton includes organisms over a wide range of sizes, including large organisms such as jellyfish. The most conspicuous protistans on the farm are the planktonic suspended algae that undergo seasonal bloom in the lake at the back of the property. He described the Thebes Formation as massive to laminated limestone with flint bands or nodules and marl rich with Nummulites and planktonic foraminifera. The sediments were also examined for palynomorphs, planktonic foraminifera, and calcareous nannofossils, even though few were expected to be found. The comb rows of most planktonic ctenophores produce a rainbow effect, which is not caused by bioluminescence but by the scattering of light as the combs move. Examples from Classical Literature But in all probability the planktonic larva rests on the sea-bottom little if at all before metamorphosing. Find more words! 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Words that rhyme with planktonic What is the adverb for planktonic? What is the adjective for planktonic? What is the noun for planktonic? Use our Sentence Generator Nearby Words plankton planktivorous plank-sheer Planks planks planking planless planned planned cities planned economies planned economy planned obsolescence 10-letter Words Starting With p pl pla plan plank plankt plankto plankton planktoni