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Which of the following events are necessary to create a phytoplankton bloom in spring in temperate latitude waters? Spring bloom composition affects biogeochemical cycles. The spring bloom results in a net uptake of carbon dioxide and as the phytoplankton sink, Why is there a difference in the steepness of the zooplankton biomass curves during the spring bloom? Taxonomically distinct expressions of carbohydrate-active enzymes (transporters; in particular, TonB-dependent transporters) and phosphate acquisition … Phytoplankton blooms characterize temperate ocean margin zones in spring. Mid Latitudes. During the winter, the lack of sufficient sunlight, too much wind and lower temperatures keep the phytoplankton population at a minimum. In the Arctic, a single summer peak of phytoplankton abundance is followed by a zooplankton maximum (Figure a). At Bermuda, where we have a good record of phytoplankton stocks and production, the bloom occurs in February-March and reaches about 0.5 p.g Presently, boreal planktivorous species at high latitudes deposit lipids during the short spring bloom period and overwinter when phytoplankton production is insufficient for feeding. Why do the dissolved nutrients drop in the spring? Concentrations of nutrients such as nitrate, phosphate, and silicate decline rapidly during spring, when the phytoplankton bloom starts and stay at low levels until autumn, when another phytoplankton bloom … - season, latitude, and transparency of the water column - as the temperate-boreal spring processes, the increasing photoperiod (day) tends to increase the compensation depth to an eventual maximum *compensation depth decreases during a bloom These lines of latitude can be grouped into three different categories as you move away from the equator. Recent research suggests the vigorous winter mixing sets the stage for explosive spring growth by bringing nutrients up from deeper waters into the sunlit layers at the surface and separating phytoplankton from their zooplankton predators. In mid latitudes, the water column is usually well mixed in winter but a shallow seasonal thermocline is formed in summer. the spring "outburst" depend on winter mixed layer depths, surface nutrient levels, and the annual cycles of light and temperature, all of which vary with latitude. Increasing Secchi depth and thus a bigger euphotic zone benefits the growth of phytoplankton. The phytoplankton production lasts as little as 2-4 weeks. Introduction. As global temperatures rise and the Arctic Ocean becomes increasingly sea ice-free, phytoplankton blooms are expanding northward at a rate of 1 degree of latitude — or 69 miles — per decade, moving into waters where they have never been seen before, according to a new study in the journal Geophysical Research Letters.. Phytoplankton, which form the base of the marine food web, have … shows that at polar and subpolar latitudes the annual phytoplankton biomass cycle is dominated by the spring bloom, which occurs in response to increases in mean irradiance of the mixed layer. Primary production is light-limited in winter. This approximately follows, and is also a major contributing factor to, the seasonal variation in plant biomass. In the high arctic, phytoplankton may not be able to grow until there is both enough sunlight per day and until the seasonal retreat of sea ice occurs in the summer. [2] But let’s take a step back to the springtime bloom we mentioned — this is one of the year’s most important biological events for the Gulf of … Phytoplankton species vary in their physiological properties, and are expected to respond differently to seasonal changes in water column conditions. In temperate-boreal waters, as we have discussed, a spring phytoplankton increase is Phytoplankton don’t stay at the water surface in this mixing, which means they don’t have access to as much sunlight—this is why blooms do not occur in the winter. Weak winds were associated with early development of stratification and thus early blooming of phytoplankton, whereas delay in the development of seasonal stratification was associated with strong winds which delayed the start of blooms. universal. Why does the spring phytoplankton bloom start in the spring and die out in the early summer? 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