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Less life:Limited phosphorus recycling suppressed early Earth’s biosphere
Less life Limited phosphorus recycling early Earth’s biosphere
2017/12/18
As Earth’s oxygen levels rose to near-modern levels over the last 800 million years, phosphorus levels also increased, according to modeling led by the UW’s Michael Kipp and others. Accordingly, Kipp ...
Phosphorus (P) is fundamental to life, and years of study in marine systems have built a broad understanding of the marine P cycle. Various aspects of marine P biogeochemistry have been reviewed previ...
Revealing the Ocean's Hidden Fertilizer Marine Plants Play Major Role in Phosphorus Cycling
Ocean's Hidden Fertilizer Marine Plants Phosphorus Cycling
2015/5/25
Phosphorus is one of the most common substances on Earth. An essential nutrient for every living organism—humans require approximately 700 milligrams per day—we are rarely concerned about consuming en...
Arsenic and phosphorus biogeochemistry in the ocean: Arsenic species as proxies for P-limitation
Arsenic and phosphorus biogeochemistry the ocean: Arsenic species proxies for P-limitation
2014/4/2
Arsenic and phosphorus are biochemically very similar, and hence arsenate (As5+) is toxic by interfering with the energy metabolism, in particular during P limitation. However, many phytoplankton deto...
Phosphorus loading of mountain lakes: Terrestrial export and atmospheric deposition
Phosphorus loading mountain lakes Terrestrial export atmospheric deposition
2014/4/8
We studied the atmospheric deposition of phosphorus (P) forms along an elevation gradient, and its contribution to the total external P loading of lakes in the Tatra Mountains and the Bohemian Forest,...
Characterization of alkaline phosphatase activity in the North and South Pacific Subtropical Gyres: Implications for phosphorus cycling
alkaline phosphatase activity iin the North South Pacific Subtropical Gyres:phosphorus cycling
2014/4/8
We characterized alkaline phosphatase (AP) activity (APA) and report AP kinetic parameters in the North and South Pacific Subtropical Gyres (NPSG and SPSG, respectively) to evaluate the relative impor...
Production of organic matter by Trichodesmium IMS101 as a function of phosphorus source
Production of organic matter by Trichodesmium IMS101 as a function of phosphorus source
2014/4/17
Herein we present the results of a series of laboratory experiments conducted to delineate the relationship between dissolved organic phosphorus (DOP) utilization and organic matter production by the ...
Dissolved inorganic and organic phosphorus uptake inTrichodesmiumand the microbial community: The importance of phosphorus ester in the Sargasso Sea
Dissolved inorganic organic phosphorus uptake Trichodes mium microbial community phosphorus ester the Sargasso Sea
2014/4/17
The dynamics and relative importance of inorganic phosphate (Pi) and dissolved organic phosphorus (DOP) uptake were examined inTrichodesmiumand the microbial community.Trichodesmium DOP and Pi uptake ...
Polyphosphate inTrichodesmiumfrom the low-phosphorus Sargasso Sea
Polyphosphate Trichodesmium the low-phosphorus Sargasso Sea
2014/4/16
Polyphosphate (polyP) is often considered to be the product of luxury uptake in areas of excess phosphorus(P), but can also accumulate in P-depleted cells in response to P resupply. To test the hypoth...
Upward phosphorus transport by Daphnia diel vertical migration
Daphnia diel vertical migration phosphorus
2014/4/16
In many lakes, zooplankton show a distinct diel vertical migration (DVM) behavior, especially during periods
of stratification. Excretion products of these zooplankton could potentially cause an upwa...
Nitrogen and phosphorus inputs control phytoplankton growth in eutrophic Lake Taihu, China
Nitrogen phosphorus inputs control phytoplankton growth eutrophic Lake Taihu
2014/4/16
Lake Taihu (Taihu) is the third largest freshwater lake in China and an important drinking water, fishing, and tourism resource for Jiangsu Province. Recent toxic cyanobacterial blooms caused by exces...
The effect of temperature on the coupling between phosphorus and growth in lacustrine bacterioplankton communities
The effect of temperature coupling between phosphorus growth in lacustrine bacterioplankton communities
2014/4/18
Phosphorus (P) routinely limits microbial growth in freshwater ecosystems. The growth rate hypothesis (GRH) relates growth to biomass P content mechanistically through changes in ribosomal ribonucleic...
The role of organic acid exudates in liberating phosphorus from seagrass-vegetated carbonate sediments
The role of organic acid exudates liberating phosphorus seagrass-vegetated carbonate sediments
2014/4/21
Sediment-bound phosphorus (P) is a potential nutrient source for P-limited seagrasses inhabiting carbonate sediments. We explored the role of organic acid (OA) exudation by seagrasses in liberating mi...
Assessment of relative phosphorus limitation of Trichodesmium spp. in the North Pacific, North Atlantic, and the north coast of Australia
Assessment of relative phosphorus limitation of Trichodesmium spp. in the North Pacific North Atlantic the north coast of Australia
2014/4/21
Trichodesmium spp. is a colonial diazotrophic cyanobacterium that occurs in the oligotrophic tropics and subtropics. Because of its ability to fix atmospheric N2, it is likely to be growth limited by ...
The influence of dissolved organic carbon on bacterial phosphorus uptake and bacteria-phytoplankton dynamics in two Minnesota lakes
dissolved organic carbon bacterial phosphorus uptake bacteria-phytoplankton dynamics two Minnesota lakes
2014/4/21
The balance of production in any ecosystem is dependent on the flow of limiting nutrients into either the autotrophic or heterotrophic components of the food web. To understand one of the important co...