Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
Wikipedia

Keta Lagoon

Keta Lagoon, also called Anlo-Keta lagoon, is the largest of the over 90 lagoons[2] that cover the 550 km[3] stretch of the coastline of Ghana. This lagoon is 126.13 km in length. It is located in the eastern coast of Ghana and separated from the Gulf of Guinea[4] by a narrow strip of sandbar. This open salty water is surrounded by flood plains and mangrove swamps. Together they form the Keta Lagoon Ramsar site[5] which covers 1200 km2

Keta Lagoon
Village on the Keta Lagoon, 1890s
Map showing the location of Keta Lagoon
Map showing the location of Keta Lagoon
Keta Lagoon
LocationVolta Region
Nearest cityKeta
Coordinates5°53′16″N 0°49′36″E / 5.8879°N 0.8267°E / 5.8879; 0.8267
Area1200 km2
Official nameKeta Lagoon Complex Ramsar Site
Designated14 August 1992
Reference no.567[1]

There are seasonal inflow of sea water during high tide from the Gulf of Guinea and regular inflow of rivers. The rivers which drain into the lagoon include the Aka, the Tordzi River [6] and Belikpa stream[7] which enter the lagoon from the north. The lagoon is surrounded by many settlements. The towns include Anloga, Woe, Keta and Kedzi to the south, Aborlove Nolopi, Anyako and Anlo Afiadenyigba to the north, Kodzi, Alakple and Tregui to the west and Denu and Adina to the east.

Over the years population growth, extensive human activities and climate change all contributed to reduce the volume of water in the lagoon which appears to be drying up. The lagoon became part of the daily existence of the people of Anlo land. In 1992 the Keta Lagoon was placed on the list of Wetlands of International Importance by the Ramsar Convention on Wetlands, and in 1999 work began on measures to limit further erosion and to control flooding of the coastal region.[8]

Prominence

edit
 
Keta Lagoon is in the south-western end of the region settled by the Ewe people

This Lagoon got its name and prominence from the settlement of Anlo- Ewes [9] but more especially from the town Keta[10] and the uses to which this water resource is put. The inhabitants of the area surrounding the lagoon are the descendants of the Anlo Ewe [11] groups who settled in Anlo land. Their ancestors migrated from Notsie in central Togo in the mid –seventeenth century.[12] They settled at Anloga and then established several small settlements around the shores of the Keta Lagoon. Some of these towns are shown below with their 2010 populations.

Name of Town 2010 Population figure
Keta 8,101
Anloga 29,748
Anyako 6,780
Anlo Afiadenyigba 9,680
Tegbi 10,056
Kedzi 129
Kodzi 185
Asadame 1,410
Woe 558
Tregui 786
Wuti 2,340
Atiteti 978
Dzato 879
Yenui 667
Alakple 529
Srogboe 640
Dzita 3531
Blekusu 897
Adina 758
Anyanui 1,783
Havedzi 897
Vodza 769
Dzelukope 10,409
Total 92,510

Geography

edit
 
Map of Keta Lagoon from OpenStreetMap

The topography of the area is a flat land with extensive lagoons in Togo [13] and Benin along the coast.[14] This suggests that the lagoon might have been formed when the sea receded back over the millennia. Hence there is a sandy coastline or sandy deposition along the littoral. Another theory is that there could be coastal rivers which have dried up leaving behind large ponds. This is evidenced by the remains of oyster shells [15] that are deposited at various spots in towns to the northern side of the lagoon. A third theory is that during the ice age these spots were the remains of the ice which melted due to rise in temperature leaving behind a fresh lagoon. The infiltration of sea water made it saline.[16]

Climate

edit

The Köppen Climate Classification is "Aw". (Tropical Savanna Climate).[17]

Climate data for Keta Municipal District
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean daily maximum °C (°F) 30
(86) 		31
(87) 		31
(88) 		31
(87) 		30
(86) 		29
(84) 		27
(81) 		27
(81) 		28
(83) 		29
(85) 		31
(88) 		31
(87) 		29
(85)
Mean daily minimum °C (°F) 28
(82) 		29
(84) 		29
(84) 		29
(84) 		28
(82) 		27
(81) 		26
(78) 		25
(77) 		26
(79) 		27
(80) 		28
(82) 		28
(82) 		27
(81)
Average precipitation days 0 0 2 3 4 6 3 2 5 4 1 1 31
Source: Weatherbase [18]

Islands

edit
 
Keta Lagoon-1

Seva is an island located in the Keta Lagoon.[19] By 2010, it has a population of 300 people with a terrain elevation of 43 metres above sea level. It has social amenities such as the School run by the African Methodist Episcopal Zion Church. Portable water is available. It is linked to the mainland by a road to Konu. Other islands include Dudu with no human habitation and Netivi Kpota where there are coconut trees.

Problem of flooding

edit

There is constant flooding of the area after heavy rains and also from the inflow of Kplikpa and Aka rivers into the lagoon.[20] The colonial government began to record the high water levels at Keta from 1907 onwards,[21] but for a long time they did not do much because of the opinion that the merchants and inhabitants should also invest in saving their own town and businesses. The foreign merchants and people of Keta believed that the colonial government should be responsible in saving the land. This issue has defined the political history of the Anlo - Ewe politicians. In periods of flooding, entire settlements would move out of their homes. To stop the flooding and the coastal erosion attempts were made during the colonial period without success. In 1963, Aryee, an officer in charge of the Public Works Department at the Keta District took the initiative and cut a canal from the lagoon to the sea.[22] This was known as Aryee Canal. He and the ground on which he was standing was swept away by a huge flood and it turned out that his plan had done more harm than good. The problem of flooding has now abated because of increased climate change and reduction in rainfall. The Keta Sea Defence project has created a canal between the lagoon and the sea so that over flooded water can go through the canal into the sea. A road was constructed through the lagoon from Kedzi to Metsrikasa for the transportation of the boulder rocks used for the construction work. Since there is no bridge for the water to flow through, the road created shallow waters to the eastern part of the lagoon.

Economic role

edit
 
Pirogues in Anyako

The lagoon and its Ramsar site contribute significantly to the economic well-being of the people. They provide the livelihood through fishing and boat transportation from Keta to Anyako and Afiadenyigba. Salt winning is common in years when there is low rainfall. Coconut trees abound close to the coastal areas from which coconut oil is extracted. An opportunity also exists for turning aquatic reeds harvested by women into bags, mats and other handicrafts that will provide alternative livelihoods to generate income especially for women.

Spiritual significance

edit

The practitioners of the traditional Anlo belief system have a strong spiritual attachment to the lagoon. It is believed that the lagoon has gods who must be worshiped if the people wish to get abundant catch. One of the gods is called ‘Gbele’ where the people of Anlo Afiadenyigba once every year perform some rituals for the lagoon. At times a live cow is deposited in the lagoon so that there could be a bumper harvest. The Bate Clan assert their relationship with Mama Bate, a sea Orisha, and claim responsibility for the expansion of the land around Keta as arising from this relationship with her.[23]

On many occasions children get drowned while swimming and people got missing during fishing expeditions and most of these accidents are attributed to spiritual forces.

In 1983, the leader of the Apostolic Revelation Society[24] the late Apostle C.N.K Wovenu [25] was invited to pray for increase in the waters of the lagoon since the lagoon was almost dried up because of the dry weather that year. After the prayers, fishermen were instructed not to fish on Sundays in the lagoon.

Gradually there is a reduction in the importance of spiritual significance of the lagoon. The diminished importance in the spiritual significance of the lagoon and other water bodies in Anlo which Green (2002) described could be explained by the decline in fish stocks caught from the lagoon.[26]

Although some fishermen attribute declining catches to social-spiritual causes such as conflict in the community or as punishment from the gods, more fishermen are aware of the increased fishing effort as a cause for declining catches. Some of these fishermen are migrating to other parts of the country and outside Ghana to continue with fishing.

Biodiversity conservation

edit

The lagoon is important in conserving several species of mangroves, crabs, shrimps and raffia plants.

Types of fish

edit

This lagoon holds variety of fishes from the marine environment and from rivers. It is a spawning zone for fingerlings and habitat is conducive for native fishes. With seasonal inflow of sea water, marine fishes migrate to breed in the calmer waters of the lagoon, especially the safe haven provided by the mangrove swamp section.[27]

Freshwater fisheries

edit

Some of the freshwater species encountered were Oreochromis niloticus, Tilapia zillii, Hemichromis Fasciatus and H. bimaculatus.[28]

Marine fisheries

edit

The common marine species found in the lagoon were the mojarra [2] (Gerres melanopterus), half beak (Hyporhampus picarti) and the needle fish[29] (Strongylura senegalens is). Juveniles of the flat sardine[30] Sardinella mardrensis, mullets Mugil curema and Liza falcipinn as well as Caranx hippos were also encountered.[31] The endemic fishes in the lagoons is mostly cichlids.[32] S. melanotheron is the dominant fish with l'guineensis, l'zillii and H. fasciatus also found in the catches. In Keta Lagoon, Pellonula leonensis was most abundant.[2][33] After the Sea Defence Project is finished, the lagoon has regained economic significance. The lagoon was dredged and an open link was created with the ocean to enable shrimps to swim into the lagoon. This protected environment allows valuable shrimps increase in size quickly.[15]

Methods of fishing

edit

Drag nets[34] are commonly used in the lagoon.[35] Other fishing gears used are bottles also called 'atukpaxe' which are mostly used by women,[36] hook and line, acadja and traps.[37] Although acadjas act as fish aggregating devices that provide shelter for fish thereby enhancing fish breeding in the lagoon, the use of mangroves and twigs, which are cut from neighboring vegetation, makes this method of fishing environmentally unfriendly.[38] When the lagoon waters are low fish are caught using the hand.

Birdlife

edit

Keta lagoon is the most important wetland on the Ghana coast for waterbirds [39] and together with Songor Lagoon constitutes the fourth most important waterbirds site on the Gulf of Guinea coast. The site supports 76 waterbird species with an estimated total population of well over 100,000, including globally significant numbers of 21 species. The site is particularly important for waders, supporting almost one third of the estimated East Atlantic Flyway population of spotted redshank. Other species which occur in large numbers at the site include curlew sandpiper, little stint, black-winged stilt, white-faced whistling-duck, as well as several heron and egret species. The most important parts of the lagoon for waterbirds are the Fiahor, Woe, Tegbi, Adina and Afiadenyigba sections.[40]

The lagoon is the most important waterbird site along the entire Ghana coast, with a record of 72 species of resident and migratory birds. Keta Lagoon and its surrounding wetlands qualifies as an internationally important wetland under the Ramsar criteria by virtue of its total bird population of around 110,000 and the fact that it supports internationally important eight species of migratory waders.[41] The lagoon has been designated an Important Bird Area (IBA) by BirdLife International because it supports significant populations of non-breeding and wintering waterbirds.[42]

Salt production

edit

There is large salt production in some parts of the lagoon at specific times.[43] Producing salt from the saline waters of the Keta Lagoon were unknown until 1702 because the people did not have the technology to do it.[44] Salt production has gradually developed among the people. During the harmartan season of November to February, the shallower parts of the lagoon close to Adina, Afiadenyigba and Anyako get evaporated especially during years when the rainfall is low. Salt crystal form from the sodium chloride which is available naturally in the area. The men make enclosures around the salty water to stop any fresh water from flowing into it. These crystals grow larger and are then mined or collected mostly by the women. Investors buy the salt and store it for sale when the prices are increased. This natural resource brings a lot of revenue to the people. However, in December 2013, 600 residents from Agbozume, at the eastern end of the lagoon, took part in a protest against the Kensington Salt Factory, who they claimed had endangered their livelihoods by creating a crater to remove sand to build a road. This, they said had damaged the banks of the lagoon and created the threat of flooding.[45] However, the chiefs of Adina contested the validity of the Agbozome protestors, ane explained that they had the authority to grant permission for Kensington Industries Limited to exploit this resource.[46]

Ecotourism

edit
 
Tourist centers constructed Kedzi in the Keta Lagoon

The Anlo- Keta area also abounds in native culture [47] and tradition [48] that could attract ecotourists.[49] Projects involving private and public partnership could help develop play grounds and picnic areas, lagoon swimming facilities, sailing and fishing, cycling, beach volleyball and jogging as sports to attract local recreational tourism. An opportunity also exists for turning aquatic reeds harvested by women into bags, mats and other handicrafts[50] that will provide alternative livelihoods to generate income especially for women. There are native dances such as agbadza, gahu, atsiagbekor, babasiko and misago. Salt mining is also a special skill of tourist attraction.

Conflicts of use

edit

There are many conflicts arising from the ownership[51] and use of the natural resources of the lagoon. On occasions fishermen from Afiadenyigba used drag nets in fishing the deeper waters near Woe and they were accused of stealing fish from the seine net used by Woe fishermen and this resulted in fights which were arbitrated at the chief's court. On many occasions cutting of mangrove trees[52] for smoking of fish resulted in arguments of ownership.

Environmental degradation

edit
 
Mangrove trees at Anyanui cut for fuelwood

These fisheries are affected by habitat degradation,[53] pollution by domestic waste and poverty of the fisher folks. Overfishing causes changes in the size and structure of the fishes as well as species composition of the catches.

Most of the red and white mangroves[54] around the lagoons have been cut down [55] for fuelwood or to create salt pans. Thus the spawning, breeding and feeding sites of fishes are being destroyed.[56]

Fisher folks also tend to use smaller mesh nets in fishing as a means to increase their catch. To arrest overfishing, fishing is not permitted on Tuesdays and in other towns fishing is banned on Sundays and before certain festival times. These are all means to reduce overfishing and over exploitation of the fish.

Ex-President Flight Lieutenant Jerry John Rawlings[57] (whose mother came from Dzelukope), has called for the protection of the Keta Lagoon from harmful human activities. He mentioned activities such as disposing of garbage into the lagoon, using dangerous chemicals[58] for fishing and over fishing as very harmful. Flt. Lt. Rawlings was addressing the 2010 Tagbaza (Lagoon Festival)[59] organized by the chiefs and people of Anlo Afiadenyigba . He said if those activities continued, the ability of the Lagoon to sustain the people in the area economically would reduce considerably.

References

edit
  1. ^ "Keta Lagoon Complex Ramsar Site". Ramsar Sites Information Service. Retrieved 25 April 2018.
  2. ^ a b c "Management Issues for the Sustainable Use of Lagoon Fish Resources" (PDF). Retrieved 2014-03-07.
  3. ^ Environmental Protection Agency (2004), State of Environment Report, Accra Ghana
  4. ^ "Gulf of Guinea (gulf, Atlantic Ocean) - Encyclopædia Britannica". Britannica.com. Retrieved 2014-03-07.
  5. ^ "Clearing House mechanism of Ghana - Convention on Biological Diversity". gh.chm-cbd.net. Archived from the original on 7 March 2014. Retrieved 2 February 2022.
  6. ^ Seeddirect (2013) Between nature and people: restoring to sustain Apes-Borassus habitats in Tordzi-Avu catchments, Accra Ghana
  7. ^ "Belikpa (stream)". Gh.geoview.info. Retrieved 2014-03-07.
  8. ^ "Keta (Ghana) - Encyclopædia Britannica". Britannica.com. 2013-12-07. Retrieved 2014-03-07.
  9. ^ "African Culture - The Anlo-Ewe People". Africa Imports. Retrieved 2014-03-07.
  10. ^ Akyeampong (2001), Between the Sea and the Lagoon : An Eco social History of the Anlo of Southeastern Ghana. Ohio University Press Athens Ohio.
  11. ^ Gbotadua Kumassah (2005) The Migration Saga of the Anlo-Ewes of Ghana
  12. ^ "African Drumming - dancedrummer.com - Anlo-Ewe History". dancedrummer.com. Retrieved 2014-03-07.
  13. ^ "Togo Map and Basic Facts". Goafrica.about.com. Archived from the original on 2014-03-08. Retrieved 2014-03-07.
  14. ^ "coastal lagoon (landform) - Encyclopædia Britannica". Britannica.com. Retrieved 2014-03-07.
  15. ^ a b mofa.gov.gh. Districts – Volta Region
  16. ^ Christopher G. Smith (2006) Mixing In The Subterranean Estuary: A Comparison Of Radon-222 Pore Water Models, Louisiana State University Baton Rouge USA
  17. ^ Climate Summary for Ada Foah (closest city on record with accurate data for the Keta Municipal District)
  18. ^ "Weatherbase.com". Weatherbase. 2013. Retrieved on May 11, 2013.
  19. ^ "Ministry of Food & Agriculture | Republic of Ghana". Mofa.gov.gh. Retrieved 2014-03-07.
  20. ^ "Coastal Aquaculture: Development Perspectives In Africa And Case Studies From Other Regions / Aquaculture Cotiere: Perspectives De Developpement En Afrique Et Exemples D'Autres Regions". Fao.org. 1976-11-28. Retrieved 2014-03-07.
  21. ^ Akyeampong (2001), Between the Sea and the Lagoon : An Eco social History of the Anlo of Southeastern Ghana. Ohio University Press Athens Ohio. pg 7
  22. ^ "Chapter 8 : Anlo-Ewe fishermen's negotiations within multiple governance settings". Dare.uva.nl. Retrieved 2014-03-07.
  23. ^ Akyeampong, Emmanuel Kwaku (2001). Between the Sea and the Lagoon. Oxford: James Currey. p. 46. ISBN 0-85255-776-0.
  24. ^ "Ars Canada". Apostlesrevelationsociety.org. Retrieved 2014-03-07.
  25. ^ "Prophet C.K.N Wovenu'S Biography - Apostles Revelation Society London Branch". Arslondon.co.uk. Retrieved 2014-03-07.
  26. ^ Sandra E. Greene (2002) Notsie Narratives: History, Memory and Meaning in West Africa. From: The South Atlantic Quarterly Volume 101, Number 4, Fall 2002 pp. 1015-1041
  27. ^ "Keta Lagoon". Content.ghananation.com. 2000-05-30. Retrieved 2014-03-07.
  28. ^ Eddie K Abban et al (edit, 2000) Biodiversity and the sustainable use of Fish in the Coastal Zone. University of Hamburg
  29. ^ "Strongylura marina, Atlantic needlefish : fisheries, gamefish". Fishbase.org. 2012-07-03. Retrieved 2014-03-07.
  30. ^ "2. FISH RESOURCES". Fao.org. 1976-02-13. Retrieved 2014-03-07.
  31. ^ Shenker JM et al (1998), Fisheries of Keta and Songhor lagoons . Environmental Baseline studies final Report. Ghana Coastal Wetlands Management report
  32. ^ Blay,J Jr and A Ameyaw (1993). Assessment of the fishery of a stunted population of the cichlid in a closed lagoon in Ghana
  33. ^ Shenker et al. (1998), Fisheries of Keta and Songhor lagoons . Environmental Baseline studies final Report. Ghana Coastal Wetlands Management report
  34. ^ "Home » Marine Conservation Institute". Marine-conservation.org. Retrieved 2014-03-07.
  35. ^ Ntiamoa Baidu Y (1991), Conservation of coastal lagoons in Ghana: The traditional Approach land Urban plan
  36. ^ Women in Fishing: A Study of the Significance of Women's Roles in the Fishing Industry at Anlo-Afiadenyigba
  37. ^ "Figure 1". Fao.org. Retrieved 2014-03-07.
  38. ^ James M. Kapetsky (1985) Some Considerations for the Management of Coastal Lagoon and estuarine fisheries, FAO Fisheries Technical Paper Issue 218
  39. ^ [1] Archived April 7, 2014, at the Wayback Machine
  40. ^ West African Journal of Applied Ecology Vol 11, 2007
  41. ^ Yaa Ntiamoh Baidoo et al (1989) Water depth selection, daily feeding routines and diets of waterbirds in coastal lagoons in Ghana. Zoology Department University of Ghana.
  42. ^ "Keta Lagoon Ramsar Site". BirdLife Data Zone. BirdLife International. 2024. Retrieved 2024-11-16.
  43. ^ http://www.panoramaacuicola.com › Noticias del día
  44. ^ Africa: Journal of the International African Institute Vol. 58, No. 1 (1988), pp. 70-86. Sandra E. Greene Social Change in Eighteenth-Century Anlo: The Role of Technology, Markets and Military Conflict Cambridge University Press
  45. ^ "Residents of Agbozome, others protest Keta Lagoon takeover". Joyonline. Retrieved 27 April 2014.
  46. ^ "Keta Lagoon does not belong to Agbozume — Adina chiefs". Modern Ghana. Retrieved 27 April 2014.
  47. ^ Caroline Walker Mills (1998),Spiritual Check up The Art of Healing in Anlo Afiadenyigba Volta Region
  48. ^ Sandra Greene (2002) Sacred sites and the colonial encounter: A history of meaning and memory in Ghana. Indiana University Press
  49. ^ "Eco - Tourism, Adventure - Ghana Tourism Homepage". Ghanatourism.gov.gh. Archived from the original on 2014-02-09. Retrieved 2014-03-07.
  50. ^ http://www.ghanacommunity.com. The Biz
  51. ^ Paul Lovejoy (Edited, 2009)Identity in the Shadow of Slavery. The Harriet Tubman Series in the African Diaspora
  52. ^ Nature and Faune Vol. 24 Issues 1. Ayaa Kojo Armah (2003)The role and work of African Mangrove Network (AMN) in conservation and sustainable use of mangroves in Africa. FAO Regional Office for Africa FAO Regional Office For Africa
  53. ^ Pak Sum Low (2001) Climate Change and Africa: Sea level rise and coastal biodiversity in Ghana pg 212
  54. ^ "Clearing House mechanism of Ghana - Convention on Biological Diversity". gh.chm-cbd.net. Archived from the original on 30 August 2014. Retrieved 2 February 2022.
  55. ^ "Microsoft Word - Nature & Faune - Revised - 15 December 2009 -.doc" (PDF). Retrieved 2014-03-07.
  56. ^ Biodiversity and sustainable use of fish in the coastal zone. pg 26
  57. ^ "Website of Former President of The Republic of Ghana, Flt Lt Jerry John Rawlings". Jjrawlings.info. Archived from the original on 2018-10-04. Retrieved 2014-03-07.
  58. ^ "Ghana » Volta Region » Keta District". Keta.ghanadistricts.gov.gh. Retrieved 2014-03-07.
  59. ^ "Tagbaza festival of the people of Anlo-Afiadenyiba Photo 1". Mobile.ghanaweb.com. Retrieved 2014-03-07.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Keta_Lagoon&oldid=1257744219"