Browsing Tag 'nitrogen'
Overabundance of an essential nutrient creates – by Liza Lester, ESA communications officer. A tractor spreads manure. Excess fertilizer seeping out of fields has a host of consequences for ecological systems and human health. Credit, flickr user eutrophication&hypoxia, 2010. NITROGEN is both an essential nutrient and a pollutant, a byproduct of fossil fuel combustion [...]
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This post contributed by Liza Lester, ESA communications officer. As winter storms pick up along the California coast, a harvest of giant kelp comes ashore with the tides, torn from seafloor anchorages by the rough action of waves. Waves are the most powerful force shaping the kelp forest, superseding the influence of temperature, nutrients, and [...]
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This post contributed by Lindsay Deel, a Ph.D. student in geography at West Virginia University and Intern with ESA’s journal Frontiers in Ecology and the Environment Memorizing diagrams of the nitrogen cycle – complete with all the little arrows flowing between atmospheric sources to uptake by vegetation – is a rite of passage for most [...]
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Vertebrate fertilizer is not the only source of nutrients in the soils of East African savannahs, at least according to a study recently published in the journal Ecology. Alison Brody from the University of Vermont and colleagues found that termites actually had more of an effect on the fruiting success of Acacia trees in Kenya than did dung and urine deposition from ungulate herbivores, such as zebras and gazelles.
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Scientists have provided a rather grim prognosis for global health: the recent increase in nutrient enrichment due to human activities, such as nitrogen pollution through fossil fuel combustion, is likely contributing to several varieties of infectious diseases in humans and wildlife.
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