Influence of flushing and other characteristics of coastal lagoons using data from Ghana

Mitchell, Steve; Couceiro, Fay; Boateng, Isaac

doi:10.1016/j.ocecoaman.2016.10.002

Cited by 18 publications

(14 citation statements)

References 32 publications

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“…The spring decrease in the water salinity in the Eastern basin of the Lake Saki may be due to both atmospheric precipitation and flood; in this area, the precipitation usually increases in the spring months. Similar seasonal phenomena in salinity fluctuations were also observed in other hy- persaline lakes (Geldenhuys et al, 2016;Mitchell et al, 2017). At the same time, there were interannual variability of the water salinity of the lake.…”

Section: Discussionsupporting

confidence: 81%

Influence of hydrometeorological factors on the ecological state of the hypersaline lake Saki (Crimea) in 2017–2018

Rudneva¹,

Chaban²,

Golub³

et al. 2020

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In order to identify the influence of hydrometeorological conditions on the seasonal changes in the ecological state of the salt Lake Saki (Crimea), the dynamics of hydrochemical parameters of wa-ter (salinity, oxygen content, temperature, pH, Eh) and changes in the population of the brine shrimp Artemia salina L., as well as the proportion of hatching nauplii from cysts were studied in 2017 and 2018. A decrease in oxygen content and an increase in brine salinity in the summer were accompanied by an increase in air temperature and water temperature; the interannual differ-ences of these parameters were preconditioned by the hydrome-teorological peculiarities. Artemia cysts were found in the water column throughout the year; the nauplii appeared in February – March; the maximum abundance of all life stages of brine shrimp was noted in May. The proportion of hatching nauplii from cysts collected in the cold season was significantly higher than that in the warm season. The observed patterns are discussed as a pos-sible source for analyzing the transformation of hyperhaline eco-systems within the ongoing climate change and for developing the guidelines for the optimal commercial use of the mineral and biological resources of such ecosystems.

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Section: Discussionsupporting

confidence: 81%

Influence of hydrometeorological factors on the ecological state of the hypersaline lake Saki (Crimea) in 2017–2018

Rudneva¹,

Chaban²,

Golub³

et al. 2020

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“…The significant wave height along the coast is reported to be 1.2m (Wellens-Mensah et al 2002). The average tidal range along the coast of Ghana was estimated to be about 1m (Boateng 2012a;Mitchell, Boateng and Couceiro 2016).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Mapping Vulnerability and Risk of Ghana's Coastline to Sea Level Rise

2016

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Coastal erosion and flooding are major threats to coastal dwellers, and the situation is predicted to worsen as a result of the impacts of climate change and associated sea level rise. In order to identify the level of vulnerability of various sections of Ghana's coastline for planning and future hazard management, a coastal vulnerability index approach was adopted for the creation of the relative vulnerability map. The coastal vulnerability variables used include geomorphology, coastal elevation, geology, local subsidence, sea level rise, shoreline change rates, mean tidal range, mean wave height and population density of the coastal areas. Risk factors were assigned to the various variables and all the factors were combined to calculate the coastal vulnerability for the coastal front of each administrative district along the coast. The outcome was used to produce a vulnerability index map of coastal districts in Ghana. The results revealed that parts of the central coast and the eastern coasts of Ghana were the most vulnerable. It was identified that about 50% of the 540 km shoreline of Ghana is

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“…The tidal range in the Gulf of Guinea is relatively low at 1-2 m, though storm surges are common (Boateng 2012a). The tidal range in Ghana is low and varies little between spring tide (1.32 m) and neap tides (0.58 m) (Mitchell, Boateng, and Couceiro 2017) and therefore have less influence on coastal processes except within tidal inlets. As a result, coastal lagoons in Ghana are either closed or open to the sea.…”

Section: Study Areamentioning

confidence: 99%

“…As a result, coastal lagoons in Ghana are either closed or open to the sea. While some are permanently closed to the sea, others are seasonally open to the sea (Mitchell, Boateng, and Couceiro 2017). Figure 1 shows the type (open or close) of sampled lagoons and their catchment sizes.…”

Section: Study Areamentioning

confidence: 99%

An Investigation into the Impacts of Climate Change on Anthropogenic Polluted Coastal Lagoons in Ghana

et al. 2020

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This paper discusses the impacts of Climate Change and anthropogenic activities on coastal lagoons in Ghana. Ghana's coastal lagoons provide unique ecosystem services. However, they are highly fragile and vulnerable to natural processes and anthropogenic activities. Climate Change impacts, such as increased temperatures, sea-level rise, storm surge and increased precipitation are likely to have ecological damage to lagoon ecosystems as a result of erosion, submergence of lagoon barriers, flooding and drying of the surrounding wetlands. Field observation, Geographic Information System modeling were among the methodology applied. The paper identified that anthropogenic activities and Climate Change would combine to have a serious future impact on lagoon ecosystems. Particularly, increased rainfall-induced flooding from the hinterland may be very injurious to the lagoon ecosystem, since the flood water may carry not only nutrients but also various contaminants and solid plastic waste generated by human activities around lagoons catchment into the lagoon channels. Besides, due to the barriers across most lagoon inlets, such polluted runoff water may not be able to flush out to sea, thus impacting negatively on the water quality of the lagoons. The paper proposes some adaptation strategies and recommends the early implementation of Climate Change adaptation strategies, coastal lagoon management measures to prevent potential future destructive impacts.

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Influence of flushing and other characteristics of coastal lagoons using data from Ghana

Cited by 18 publications

References 32 publications

Influence of hydrometeorological factors on the ecological state of the hypersaline lake Saki (Crimea) in 2017–2018

Influence of hydrometeorological factors on the ecological state of the hypersaline lake Saki (Crimea) in 2017–2018

Mapping Vulnerability and Risk of Ghana's Coastline to Sea Level Rise

An Investigation into the Impacts of Climate Change on Anthropogenic Polluted Coastal Lagoons in Ghana

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