Southwest Indian Seamounts Marine Protected Area

Southwest Indian Seamounts Marine Protected Area
Southwest Indian Seamounts Marine Protected Area
	Southwest Indian Seamounts MPA location
Location	South of the continental shelf of South Africa
Nearest city	Stilbaai
Coordinates	36°46′S 22°40′E
Area	7,500 km2 (2,900 sq mi)
Established	2019

The Southwest Indian Seamounts Marine Protected Area is an offshore conservation region in the exclusive economic zone of South Africa

🌍
Southwest Indian Seamounts MPA location

History

Fossilised bones from extinct whale species have been recovered from the terraced continental slope from depths beyond 900 m (3,000 ft) in this area.[1]

Purpose

A marine protected area is defined by the IUCN as "A clearly defined geographical space, recognised, dedicated and managed, through legal or other effective means, to achieve the long-term conservation of nature with associated ecosystem services and cultural values".[2]

This MPA is specifically intended to protect rocky shelf edge, seamount and associated deep sea biodiversity and ecosystems.[3] It is split to allow petroleum exploration in areas between those of more ecologically important areas, which include untrawled rocky shelf edge with coral gardens in the shallower 200 to 300 m (980 ft) depths and reef-building cold-water corals in the 900 to 1,200 m (3,000 to 3,900 ft) depth range. The deeper areas protect continental slope and abyssal habitats in the 3,800 to 4,200 m (12,500 to 13,800 ft) depth range, and a seamount.[1]

Extent

This offshore MPA is in the 1,200 to 500 m (3,900 to 1,600 ft) depth range about 93 nautical miles south of Stilbaai in the Western Cape. The MPA protects the water column, the seabed and the subsoil within the boundaries.[3] The area of ocean protected is 7,500 km² (2,900 sq mi).[4]

Boundaries

The MPA comprises three separate areas:

Restricted area 1 has boundaries:[3][1]

Northern boundary: S35°53’, E21°40’ to S35°53’, E22°37’
Eastern boundary: S35°53’, E22°37’ to S36°22’, E22°37’
Southern boundary: S36°22’, E22°37’ to S36°22’, E21°40’
Western boundary: S36°22’, E21°40’ to S35°53’, E21°40’

Controlled area 2 has boundaries:[3][1]

Northern boundary: S36°10’, E23°14’ to S36°10’, E23°40’
Eastern boundary: S36°10’, E23°40’ to S36°35’, E23°14’
Southern boundary: S36°35’, E23°14’ to S36°35’, E23°14’
Western boundary: S36°35’, E23°14’ to S36°10’, E23°14’

Restricted area 3 has boundaries:[3][1]

Northern boundary: S37°10’, E22°0’ to S37°10’, E22°35’
Eastern boundary: S37°10’, E22°35’ to S37°40’, E22°35’
Southern boundary: S37°40’, E22°35’ to S37°45’, E22°0’
Western boundary: S37°45’, E22°0’ to S37°10’, E22°0’

Zonation

The two western component areas are zoned as restricted areas, and the eastern is a controlled area.[1]

Management

The marine protected areas of South Africa are the responsibility of the national government, which has management agreements with a variety of MPA management authorities, which manage the MPAs with funding from the SA Government through the Department of Environmental Affairs (DEA).[2]

The Department of Agriculture, Forestry and Fisheries is responsible for issuing permits, quotas and law enforcement.[5]

Use

Geography

Climate

Seasonal variations in sea conditions

Ecology

Marine ecoregions of the South African Exclusive Economic Zone: Southwest Indian Seamounts Marine Protected Area is in the Southwest Indian ecoregion

The MPA is in the warm temperate Southwest Indian ecoregion to the east of Cape Point which extends eastwards to the border of Mozambique. There are some species endemic to South Africa in this region.[6]

Three major habitats exist in the sea in this region, two of them distinguished by the nature of the substrate. The substrate, or base material, is important in that it provides a base to which an organism can anchor itself, which is vitally important for those organisms which need to stay in one particular kind of place. Rocky shores and reefs provide a firm fixed substrate for the attachment of plants and animals. Sandy beaches and bottoms are a relatively unstable substrate and cannot anchor many of the larger benthic organisms. Finally there is open water, above the substrate and clear of the kelp forest, where the organisms must drift or swim. Mixed habitats are also frequently found, which are a combination of those mentioned above.[7]

Rocky shores and reefs There are rocky reefs and mixed rocky and sandy bottoms. For many marine organisms the substrate is another type of marine organism, and it is common for several layers to co-exist.[7]^:Ch.2

The type of rock of the reef is of some importance, as it influences the range of possibilities for the local topography, which in turn influences the range of habitats provided, and therefore the diversity of inhabitants. Sandstone and other sedimentary rocks erode and weather very differently, and depending on the direction of dip and strike, and steepness of the dip, may produce reefs which are relatively flat to very high profile and full of small crevices. These features may be at varying angles to the shoreline and wave fronts. There are fewer large holes, tunnels and crevices in sandstone reefs, but often many deep but low near-horizontal crevices.

Sedimentary bottoms (including silt, mud, sand, shelly, pebble and gravel bottoms) Sediment bottoms at first glance appear to be fairly barren areas, as they lack the stability to support many of the spectacular reef based species, and the variety of large organisms is relatively low. The sediment may be moved around by water action, to a greater or lesser degree depending on weather conditions and exposure of the area. This means that sessile organisms must be specifically adapted to areas of relatively loose substrate to thrive in them, and the variety of species found on a sediment bottom will depend on all these factors. Unconsolidated sediment bottoms have one important compensation for their instability, animals can burrow into the sand and move up and down within its layers, which can provide feeding opportunities and protection from predation. Other species can dig themselves holes in which to shelter, or may feed by filtering water drawn through the tunnel, or by extending body parts adapted to this function into the water above the sand.[7]^:Ch.3

The open sea The pelagic water column is the major part of the living space at sea. This is the water between the surface and the top of the benthic zone, where living organisms swim, float or drift, and the food chain starts with phytoplankton, the mostly microscopic photosynthetic organisms that convert the energy of sunlight into organic material which feeds nearly everything else, directly or indirectly. In temperate seas there are distinct seasonal cycles of phytoplankton growth, based on the available nutrients and the available sunlight. Either can be a limiting factor. Phytoplankton tend to thrive where there is plenty of light, and they themselves are a major factor in restricting light penetration to greater depths, so the photosynthetic zone tends to be shallower in areas of high productivity.[7]^:Ch.6 Zooplankton feed on the phytoplankton, and are in turn eaten by larger animals. The larger pelagic animals are generally faster moving and more mobile, giving them the option of changing depth to feed or to avoid predation, and to move to other places in search of a better food supply.

Marine species diversity

This MPA protects deep-water coral and seamount habitats. The MPA is part of the nursery area for mako sharks and foraging areas for endangered albatross species.[1]

Animals

Birds:

Diomedea amsterdamensis (Amsterdam albatross)[4]
Thalassarche chlororhynchos (Atlantic yellow-nosed albatross)[4]
Thalassarche melanophris (Black-browed albatross)[4]
Thalassarche carteri (Indian yellow-nosed albatross)[4]
Phoebetria fusca (Sooty albatross)[4]
Diomedea dabbenena (Tristan albatross)[4]

Fish:

Isurus (mako shark)[4]

Endemism

The MPA is in the superficially warm temperate Southwest Indian ecoregion to the east of Cape Agulhas which extends to the Mozambique border. There are some species endemic to South Africa in this region.[6]

Alien invasive species

Threats

Slipways and harbours in the MPA

gollark: Shame, I can't see any XSS attack vectors.

gollark: Wow. Amazing.

gollark: What apiois this?

gollark: Multiplayer Light Switch?

gollark: 0.9% of people can't solve this!🍎 + 🍏 = 2🍎, 🍏 > 0🍎, 🍏 ∈ ℕ

References

"R120. Draft Notice Declaring the Southwest Indian Seamount Marine Protected Area under Section 22A of the National Environmental Management: Protected Areas Act, 2003 (Act No. 57 of 2003)" (PDF). Regulation Gazette No. 10553. Pretoria: Government Printer. 608 (39646). 3 February 2016.
"Marine Protected Areas". World Wildlife Fund. Retrieved 24 May 2018.
"R121. Draft Regulations for the management of the Southwest Indian Seamount Marine Protected Area" (PDF). Regulation Gazette No. 10553. Pretoria: Government Printer. 608 (39646). 3 February 2016.
"Southwest Indian Seamount MPA". www.marineprotectedareas.org.za. Retrieved 15 February 2019.
"Marine Protected Area". Retrieved 26 May 2018.
Sink, K.; Harris, J.; Lombard, A. (October 2004). Appendix 1. South African marine bioregions (PDF). South African National Spatial Biodiversity Assessment 2004: Technical Report Vol. 4 Marine Component DRAFT (Report). pp. 97–109.
Branch, G.M.; Branch, M.L. (1985). The Living Shores of Southern Africa (3rd impression ed.). Cape Town: C. Struik. ISBN 0 86977 115 9.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[Gazette_39646_SIS2-1] "R120. Draft Notice Declaring the Southwest Indian Seamount Marine Protected Area under Section 22A of the National Environmental Management: Protected Areas Act, 2003 (Act No. 57 of 2003)" (PDF). Regulation Gazette No. 10553. Pretoria: Government Printer. 608 (39646). 3 February 2016.

[WWF-2] "Marine Protected Areas". World Wildlife Fund. Retrieved 24 May 2018.

[Gazette_39646_SIS-3] "R121. Draft Regulations for the management of the Southwest Indian Seamount Marine Protected Area" (PDF). Regulation Gazette No. 10553. Pretoria: Government Printer. 608 (39646). 3 February 2016.

[Southwest_Indian_seamount_MPA-4] "Southwest Indian Seamount MPA". www.marineprotectedareas.org.za. Retrieved 15 February 2019.

[SANParks-5] "Marine Protected Area". Retrieved 26 May 2018.

[Sink_et_al_2004-6] Sink, K.; Harris, J.; Lombard, A. (October 2004). Appendix 1. South African marine bioregions (PDF). South African National Spatial Biodiversity Assessment 2004: Technical Report Vol. 4 Marine Component DRAFT (Report). pp. 97–109.

[Branch_1985-7] Branch, G.M.; Branch, M.L. (1985). The Living Shores of Southern Africa (3rd impression ed.). Cape Town: C. Struik. ISBN 0 86977 115 9.

Marine protected areas of South Africa
Coastal MPAs	Addo Elephant National Park Marine Protected Area Betty's Bay Marine Protected Area Bird Island Marine Protected Area De Hoop Marine Protected Area Dwesa-Cwebe Marine Protected Area Goukamma Marine Protected Area Helderberg Marine Protected Area Hluleka Marine Protected Area iSimangaliso Marine Protected Area Jutten Island Marine Protected Area Langebaan Lagoon Marine Protected Area Malgas Island Marine Protected Area Marcus Island Marine Protected Area Namaqua National Park Marine Protected Area Pondoland Marine Protected Area Robben Island Marine Protected Area Robberg Marine Protected Area Sardinia Bay Marine Protected Area Sixteen Mile Beach Marine Protected Area Stilbaai Marine Protected Area Table Mountain National Park Marine Protected Area Trafalgar Marine Protected Area Tsitsikamma Marine Protected Area uThukela Banks Marine Protected Area Walker Bay Whale Sanctuary
Offshore MPAs	Agulhas Bank Complex Marine Protected Area Agulhas Front Marine Protected Area Agulhas Muds Marine Protected Area Aliwal Shoal Marine Protected Area Amathole Offshore Marine Protected Area Benguela Bank Marine Protected Area Benguela Muds Marine Protected Area Browns Bank Complex Marine Protected Area Browns Bank Corals Marine Protected Area Cape Canyon Marine Protected Area Childs Bank Marine Protected Area iSimangaliso Offshore Marine Protected Area Namaqua Fossil Forest Marine Protected Area Orange Shelf Edge Marine Protected Area Prince Edward Islands Marine Protected Area Protea Banks Marine Protected Area Southeast Atlantic Seamounts Marine Protected Area Southwest Indian Seamounts Marine Protected Area Port Elizabeth Corals Marine Protected Area uThukela Banks Marine Protected Area
Management organisations	CapeNature City of Cape Town Department of Agriculture Forestry and Fisheries Department of Environmental Affairs Department of Science and Technology Eastern Cape Parks and Tourism Agency Ezemvelo KZN Wildlife iSimangaliso Wetland Park Authority Nelson Mandela Bay Metropolitan Municipality South African National Parks
Research organisations	Council for Geoscience iNaturalist Iziko South African Museum National Research Foundation Nelson Mandela University Oceanographic Research Institute Rhodes University South African Association for Marine Biological Research South African Environmental Observation Network South African Institute for Aquatic Biodiversity South African National Biodiversity Institute University of KwaZulu-Natal University of Cape Town
Key people	Kerry Sink
MPA species lists	List of marine animals of the Cape Peninsula and False Bay List of seaweeds of the Cape Peninsula and False Bay
Related	African Coelacanth Ecosystem Program Biodiversity of South Africa Marine biodiversity of South Africa Environmental impact of recreational diving Low impact diving International Union for Conservation of Nature Marine ecoregions of the South African exclusive economic zone Marine protected area Marine Living Resources Act, 18 of 1998 National Environmental Management Act, 107 of 1998 National Environmental Management: Biodiversity Act, 10 of 2004 National Environmental Management: Integrated Coastal Management Act, 24 of 2008 National Environmental Management: Protected Areas Act, 57 of 2003 Protected areas of South Africa Scuba diving tourism SeaKeys World Wide Fund for Nature
Categories: Marine protected areas of South Africa Commons Index Outline

Marine biodiversity of South Africa
National species lists	List of comb jellies of South Africa List of echinoderms of South Africa List of marine and coastal birds of South Africa List of marine bristleworms of South Africa List of marine bryozoans of South Africa List of marine cnidarians of South Africa List of marine crustaceans of South Africa List of sea spiders of South Africa List of marine fishes of South Africa List of marine bony fishes of South Africa List of marine spiny-finned fishes of South Africa List of marine Perciform fishes of South Africa List of marine fishes of the suborder Percoidei of South Africa List of marine flatworms of South Africa List of marine mammals of South Africa List of marine molluscs of South Africa List of marine gastropods of South Africa List of marine heterobranch gastropods of South Africa List of marine reptiles of South Africa List of seaweeds of South Africa List of red seaweeds of South Africa List of sponges of South Africa
Regional and MPA species lists	List of marine animals of the Cape Peninsula and False Bay List of seaweeds of the Cape Peninsula and False Bay
Research	National Biodiversity Assessment Reef Atlas Project SeaKeys South African Environmental Observation Network South African Institute for Aquatic Biodiversity South African National Biodiversity Institute
Citizen science databases	iNaturalist iSpot FitzPatrick Institute of African Ornithology Virtual Museum
Researchers	Kerry Sink
Taxonomists	Robert Anderson J. L. Barnard K. H. Barnard John J. Bolton George M. Branch Jennifer Day (biologist) Wayne Florence Terrence Gosliner Charles L. Griffiths P. Heemstra Brian Kensley N. A. H. Millard H. Milne-Edwards T. Samaai J. L. B. Smith H. Stegenga
Related	African Coelacanth Ecosystem Programme Marine ecoregions of the South African exclusive economic zone Marine protected areas of South Africa South African Institute for Aquatic Biodiversity South African National Biodiversity Institute South African Sustainable Seafood Initiative
Categories: Marine biodiversity of South Africa Commons