Sentences with phrase «natural nitrogen fixation»

Their analysis, which could discern human - derived nitrogen from natural nitrogen fixation, revealed that the oceanic nitrate concentration increased significantly over the last 30 years in surface waters of the North Pacific due largely to the enhanced deposition of nitrogen from the atmosphere.

The enzyme responsible for natural nitrogen fixation is called nitrogenase.

Not exact matches

The ban on synthetically - produced mineral nitrogen in organic agriculture confines the productivity to the natural system limits (i.e. N - fixation) or the limits defined by the annual nutrient balance of the farm, including imported fodder and organic fertilizers.

This anthropogenic addition of nitrogen has reached a magnitude comparable to about half of global ocean nitrogen fixation (the natural process by which atmospheric nitrogen gas becomes a useful nutrient for organisms).

Many gardeners, however, find it well worth the trouble to grow: just like all other legumes, astragalus has the ability to promote nitrogen fixation in the soil, thus enhancing its natural fertility.

These words are: ECOLOGY, BIOSPHERE, BIOTIC FATORS, ABIOTIC FACTORS, POPULATION, BIOLOGICAL COMMUNITY, BIOME, ORGANISM, HABITAT, NICHE, SYMBIOSIS, PREDATION, MUTUALISM, COMMENSALISM, PARASITISM, AUTOTROPH, HETEROTROPH, HERBIVORE, CARNIVORE, OMNIVORE, DETRITIVORES, TROPHIC LEVEL, FOOD CHAIN, FOOD WEB, BIOMASS, MATTER, NUTRIENT BIOCHEMICAL CYCLE, NITROGEN FIXATION, DENITRIFICATION, COMMUNITY, LIMITING FACTOR, TOLERANCE, ECOLOGICAL SUCCESSION, PRIMARY SUCCESSION, CLIMAX COMMUNITY, SECONDARY SUCCESSION, TUNDRA, CLIMATE, LATITUDE, WEATHER, BOREAL FOREST, TEMPERATE FOREST, WOODLANDS, GRASSLAND, DESERT, TROPICAL SAVANNA, TROPICAL SEASONAL FOREST, TROPICAL RAIN FOREST, SEDIMENT, LITTORAL ZONE, PROFUNDAL ZONE, PLANKTON, WETLANDS, ESTUARY, NTERTIDAL ZONE, PHOTIC ZONE, APHOTIC ZONE, BENTHIC ZONE, ABYSSAL ZONE, POPULATION DENSITY, DISPERSION, DENSITY - INDEPENDENT FACTOR, DENSITY - DEPENDENTLY FACTOR, POPULATION GROWTH RATE, EMIGRATION, IMMIGRATION, CARRYING CAPACITY, DEMOGRAPHIC TRANSISTIONS, ZERO POPULATION GROWTH, AGE STRUTURE, EXTINCTION, BIODIVERSITY, GENETIC DIVERSITY, SPECIES DIVERSITY, ECOSYSTEM DIVERSITY, BACKGROUND EXTINCTION, MASS EXTINCTION, NATURAL RESOURCES, OVER EXPLOITATION, HABITAT FRAGMENTATION, BIOLOGICAL MAGNIFICATION, EUTROPHICATION, INTRODUCED SPECIES, RENEWABLE RESOURCES, NONRENEWABLE RESOURCES, NONRENEWABLE RESOURCES, SUSTAINABLE USE, ENDEMIC, BIOLOGICAL AUGMENTATION, BIOREMEDIATION, PRODUCER, CONSUMER, FUNDAMENTAL NICHE, PIONEER SPECIES, REALIZED NICHE, LIMITING FACTOR, PREY, ENERGY PHYRAMIND, PRIMARY CONSUMER, SECONDARY CONSUMER, HOST, GREEN HOUSE EFFECT, POLAR ZONE, TROPICAL ZONE, CANOPY, DECIDUOU, CONIFEROUS, HUMUS

It needs to be replaced with natural leguminous nitrogen fixation or the expanded population will find itself trying to live on one third of present agricultural productivity as oil production passes its peak.

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