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| North Patagonian Gulfs marine ecoregion | |
|---|---|
 Coast at Golfo San Jorge, Argentina | |
 Marine ecoregion boundaries (red line) | |
| Ecology | |
| Realm | Temperate South America |
| Province | Magellanic province |
| Borders (marine) | Uruguay - Buenos Aires Shelf, Patagonian Shelf |
| Geography | |
| Area | 208,821[1] km2 (80,626 sq mi) |
| Country | Argentina |
The North Patagonian Gulfs marine ecoregion covers the bays and offshore shelf of a portion of the southern coast of Argentina. As the name suggests, the coast lined is indented with major gulfs - San Matías Gulf, Golfo_Nuevo and San Jorge Gulf. The broad, protected areas support abundant fisheries, breeding sites for marine mammals, and extensive seabird colonies. The area is, however, under pressure from over-harvesting of mollusk and crustacean beds, and industrial development.[1]. The entire ecoregion is on the Patagonian Shelf. The ecoregion is part of the Magellanic marine province. It is thus part of the Temperate South America realm. [2] [3] [4] [5].
Physical setting
The northern border of the ecoregion, at 41°S, reaches out for 260 miles into the Atlantic Ocean from the mouth of Río Negro (Argentina). The ecoregion is bounded on the south at 47°S at the southern point of San Jorge Gulf. In between are 1,890 miles of highly indented coastline. The bordering coast is generally low, dry scrub and grassland, characterized by the Argentine Monte ecoregion along the northern coast and Patagonian Desert along the southern.[1]. Few rivers feed the ecoregion; exceptions are the Rio Negro in the north and Chubut River in the south.
The entire ecoregion sits on the continental shelf (the Patagonian Shelf). The deepest point in the ecoregion overall is −216 metres (−709 ft), and the average is −78 metres (−256 ft).[5]
Currents and climate
The cold, nutrient-rich Malvinas Current (MC) (also called the Falkland Current) flows north into the region in a 100-km wide band over the Patagonian Shelf.[6] Measurements of the MC flow rate is highly variable, depending on the location ranging from 10 Sverdrups (Sv) to 88 Sv. The velocity also varies, with a typical surface drift of 40 centimetres per second (0.89 mph). Mean surface temperatures are 6 °C (43 °F).
Animals / Fish
Animals[7]
References
- ^ a b c "Setting Geographic Priorities for Marine Conservation in Latin America and the Caribbean" (PDF). The Nature Conservancy. Retrieved June 30, 2022.
- ^ Spalding, MD; Fox, Helen; Allen, Gerald; Davidson, Nick. "Marine Ecoregions of the World: A Bioregionalization of Coastal and Shelf Areas". Bioscience. Retrieved June 30, 2022.
{{cite web}}: CS1 maint: multiple names: authors list (link) - ^ "North Patagonian Gulfs". MarineRegions.org. Retrieved September 9, 2022.
- ^ "Patagonian Shelf". One Shared Ocean. Retrieved September 9, 2022.
- ^ a b "North Patagonian gulfs". Digital Observatory for Protected Areas (DOPA). Retrieved July 31, 2023.
- ^ "The Malvinas Current". University of Miami. Retrieved March 18, 2023.
- ^ "The Reef-fish Fauna of the Northern Patagonian Gulfs, Argentina, Southwestern Atlantic". The Open Fish Science Journal. Retrieved July 31, 2023.
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