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This article explores how nitrogen becomes available to organisms and what changes in nitrogen levels as a result of human activity means to local and global ecosystems.
- Biological Nitrogen Fixation
Nitrogen is the most important, limiting element for plant...
- The Conservation of Mass
Living organisms are primarily made of six elements: oxygen,...
- Biodiversity and Ecosystem Stability
A test of the biodiversity-stability theory: Meta-analysis...
- Food Web: Concept and Applications
Food web is an important conceptual tool for illustrating...
- Biodiversity and Ecosystem Services
Service type : Goods or services provided: Provisional:...
- The Ecology of Carrion Decomposition
Human health effects of a changing global nitrogen cycle....
- Secondary Production, Quantitative Food Webs, and Trophic Position
Secondary production (or the formation of heterotrophic...
- Rivers and Streams: Life in Flowing Water
Wold, A. K. F. & Hershey, A. E. Effects of salmon carcass...
- Biological Nitrogen Fixation
Six major effects of NO x and NH 3 emissions have been cited: [1] 1) decreased atmospheric visibility due to ammonium aerosols (fine particulate matter [PM]); 2) elevated ozone concentrations; 3) ozone and PM affects human health (e.g. respiratory diseases, cancer); 4) increases in radiative forcing and global climate change; 5) decreased ...
Feb 3, 2021 · Disruption of the global nitrogen cycle by humans results primarily from activities associated with food and energy production. Since the middle of the twentieth century, human activities have more than doubled inputs of nitrogen to the Earth’s ecosystems.
- Jerry M. Melillo
- 10.1007/s13280-020-01429-2
- 2021
- Ambio. 2021 Apr; 50(4): 759-763.
As the nitrogen cycle is disrupted, it has knock-on effects across the planet. Despite this, there are a number of ways we can restore the nitrogen cycle and avert an environmental crisis.
In some cases, N r loss to the environment is the key driver of effects (e.g. terrestrial and coastal eutrophication, nitrous oxide emissions), whereas in some other situations nitrogen represents a key contributor exacerbating a wider problem (e.g. freshwater pollution, biodiversity loss).
- Jan Willem Erisman, James N. Galloway, Sybil Seitzinger, Albert Bleeker, Nancy B. Dise, A. M. Roxana...
- 2013
The challenge presented by the scope of the changing nitrogen cycle remains under-appreciated in both policy and scientific circles, but already-observed impacts of such changes on biodiversity, climate and human health provide compelling reasons to exploit more fully options for nitrogen management and policies.1860 1995 Examples of reactive fo...
Jan 16, 2008 · The massive acceleration of the nitrogen cycle as a result of the production and industrial use of artificial nitrogen fertilizers worldwide has enabled humankind to greatly increase food...
