In this model framework, existing ecological and biogeochemistry concepts are extended with a balanced approach for assessing nutrient and sediment delivery on the one hand, and nutrient in-stream retention on the other hand.
They have also resulted in severe environmental consequences globally due to nutrient mismanagement, including the great U.S. Dust Bowl of the 1930s, and, more recently, massive plumes of nutrient runoff in areas like the Chesapeake Bay and the Gulf of Mexico, which are creating huge marine dead zones.
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Hydroponics and aeroponics - a type of hydroponics, but rather than growing in nutrient-rich water, grows in the air and the plants get sprayed with nutrients - technology is increasingly being utilised by businesses themselves.
Nature groups like the National Fish and Wildlife Foundation and government-funded research organizations such as Connecticut Sea Grant and the Long Island Sound Study sponsored Mr. Yarish's seaweed project to show how seaweed can keep nutrient pollution in check.
Many supermarket vegetables are already grown hydroponically in nutrient-enriched water, and research indicates this technique could work well in space.
These included soil microbes, which govern the nutrient cycling reactions in soils, and mycorrhizae, root-colonising fungi which help plants to absorb nutrients.
Ocean ecosystems are beset by changes in nutrient levels due to run off near the coasts and by overfishing, which plays havoc with food webs nearly everywhere.
That means building futuristic structures that use wastewater and solar power to produce hydroponic (grown in a nutrient-rich water, without soil) and aeroponic (grown in water-saturated air) crops.
The lab found that there was no appreciable difference in the nutrient profiles of regular versus quick-cooking.
After the lumber industry depleted local forest, the area became designated a protected national park with a coastline famous for spotting resident beluga whales and other species that migrate here to feed in the nutrient-rich waters.
In fact, in the USDA nutrient database, instant oatmeal possesses the same nutritional profile as regular or quick-cooking oatmeal.
"Today everyone is focused on reducing nutrient inputs to the sea in order to reduce eutrophication (the effect of excessive nutrients) in the Baltic, but by helping nature itself to deal with the phosphorus that is discharged we can create a turbo effect in the battle against eutrophication, " said Anders Stigebrandt, of the University of Gothenburg's Department of Earth Sciences.
Living in a zero-gravity environment poses risk of nutrient deficiency and bone loss, so keeping close tabs on food intake in space is crucial.
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Until the 20th Century, the nutrient element only came to Earth in a reactive form that is usable by plants and animals, thanks to certain microbes in soil and water (and to a smaller extent in lightning strikes).
It also ignores the considerable value of services derived from the physical, biological, and chemical processes in natural ecosystems, including nutrient recycling, flood risk reduction, water cleaning and storage, climate regulation, and maintenance of biodiversity.
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Nutrient runoff also is causing toxic algae blooms in the Gulf of Mexico's Barataria Estuary, she said.
Nutrient overloads lead to low levels of dissolved oxygen in the water, which can kill fish.
Lettuces usually shouldn't be planted near lavender: Leafy greens like nutrient-rich soil, while lavenders do better in drier conditions.
Any food with a lot of fat is going to increase the calories and, in essence, make the food less nutrient dense.
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Researchers examined fruit and nutrient intake for 3, 700 children from 98 schools in the north of England during 2004.
Nutritionists say that limiting caloric intake in a compressed time frame can lead to nutrient deficiencies, causing decreased immune function, dry skin and loss of muscle or bone density, for starters.
Nutrient deficiencies, especially of nitrogen, triggered more intense colour in maples as the trees attempted to lessen the effects of sunlight.
Farmers in this new economy play an important role as nutrient stewards.
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It sits in the middle of the Japan current, a nutrient-rich stream that feeds a stunning variety of crustaceans, tropical fish and other sealife.
Researchers don't know why a plant-based diet seems to have a protective effect, but one likely reason is the nutrient profile of vegetarian diets, which tend to be higher in fiber and lower in saturated fat.
There are many areas of overlap between biomimicry and "cradle-to-cradle" particularly in the way that ecosystems present a great model of closed loop systems in which any waste from one organism becomes the nutrient for something else.
The discovery of how to isolate this nutrient that helps the body absorb calcium led to a Nobel Prize in chemistry in 1928.
Yes, the cookie is lower in calories, but it doesn't measure up on the nutrient side.
CNN: Get the biggest bang for your calorie with nutrient-dense food
In an area of a few tens of square kilometres around this tower, the researchers will place further sensors in the soil and in local streams, to measure temperature, carbon-dioxide and nutrient levels, along with rates of root growth and the activities of microbes.
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