Global land–ocean linkage
Direct inputs of nitrogen to coastal waters via submarine groundwater discharge
Bibliographic Data
| ID | 15548540 |
|---|---|
| Authors | Arthur Beusen (0000-0003-0104-8615, Netherlands Environmental Assessment Agency, corresponding author), A H W Beusen, C P Slomp (0000-0002-7272-0109, Utrecht University), Lex Bouwman (0000-0002-2045-1859, Utrecht University) |
| Year | 2013 |
| Volume | 8 |
| Issue | 3 |
| Pages | 034035-034035 |
| Publication date | 2013-09-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/8/3/034035 |
| OpenAlex | W2152506324 |
| Language | EN |
| Citations received | 1 |
| References cited | 30 |
The role of submarine groundwater discharge (SGD), the leakage of groundwater from aquifers into coastal waters, in coastal eutrophication has been demonstrated mostly for the North American and European coastlines, but poorly quantified in other regions. Here, we present the first spatially explicit global estimates of N inputs via SGD to coastal waters and show that it has increased from about 1.0 to 1.4 Tg of nitrate (NO3-N) per year over the second half of the 20th century. Since this increase is not accompanied by an equivalent increase of groundwater phosphorus (P) and silicon (Si), SGD transport of nitrate is an important factor for the development of harmful algal blooms in coastal waters. Groundwater fluxes of N are linked to areas with high runoff and intensive anthropogenic activity on land, with Southeast Asia, parts of North and Central America, and Europe being hot spots
Algal bloom · Aquifer · Eutrophication · Groundwater · Hydrology (agriculture · Nitrate · Nutrient · Phytoplankton · Submarine groundwater discharge · Surface runoff · Environmental Science · Geology and Paleoclimatology Research · Groundwater and Isotope Geochemistry · Marine and coastal ecosystems · Ecology · Geology · Oceanography
| Citations per year | 0.2 |
|---|---|
| Citation span | 2021 - 2021 (1) |
| Highly cited | No |