Taxonomic Diversity and Structure of Benthic Macroinvertebrates in Aby Lagoon (Ivory Coast, West Africa)

2008 ◽  
Vol 11 (18) ◽  
pp. 2224-2230 ◽  
Author(s):  
K.N. Kouadio ◽  
D. Diomande ◽  
A. Ouattara ◽  
Y.J.M. Kone ◽  
G. Gourene
2020 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Yanick Djoman Tanon ◽  
Idrissa Adama Camara ◽  
Norbert Kouakou Kouadio ◽  
Lassina Doumbia ◽  
Allassane Ouattara ◽  
...  

The taxonomic diversity and structure of benthic macroinvertebrates of Taabo Lake (Ivory Coast), from November 2017 to October 2018 were evaluated. Water quality parameters, such as temperature (T °C), water transparency (cm), dissolved oxygen (mg.L-1), pH, turbidity (NTU), electrical conductivity (EC, µS.cm-1) were measured in situ using a multi-parameter probe HANNA, from four sampling points (littoral and sub-littoral zones) in Taabo Lake. Benthic macroinvertebrates sampling were collected by using Van veen in stainless steel. A total of 63 benthic macroinvertebrates taxa belonging to 23 Families, 8 Orders, 2 Classes and 2 Phylums (Molluscs and Arthropods) were identified. The most abundant of benthic macroinvertebrates were Mesogastropoda (66%) represented in all sampling points. They were followed by Diptera (25%), Odonata (3%), Ephemeroptera (3%), Basommatophora (2%), Heteroptera (1%), Lepidoptera and Coleoptera (less than 1%). The values of diversity indices of benthic macroinvertebrates collected in Taabo Lake showed no significant variations between sampling points.


Flora ◽  
2000 ◽  
Vol 195 (3) ◽  
pp. 257-266 ◽  
Author(s):  
Axel Krieger ◽  
Stefan Porembski ◽  
Wilhelm Barthlott

1989 ◽  
Vol 160 (3) ◽  
pp. 363-370 ◽  
Author(s):  
M. Verdier ◽  
F. Denis ◽  
A. Sangare ◽  
F. Barin ◽  
G. Gershy-Damet ◽  
...  

Atmosphere ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1459
Author(s):  
Edouard Pignède ◽  
Philippe Roudier ◽  
Arona Diedhiou ◽  
Vami Hermann N’Guessan Bi ◽  
Arsène T. Kobea ◽  
...  

One way to use climate services in the case of sugarcane is to develop models that forecast yields to help the sector to be better prepared against climate risks. In this study, several models for forecasting sugarcane yields were developed and compared in the north of Ivory Coast (West Africa). These models were based on statistical methods, ranging from linear regression to machine learning algorithms such as the random forest method, fed by climate data (rainfall, temperature); satellite products (NDVI, EVI from MODIS Vegetation Index product) and information on cropping practices. The results show that the forecasting of sugarcane yield depended on the area considered. At the plot level, the noise due to cultivation practices can hide the effects of climate on yields and leads to poor forecasting performance. However, models using satellite variables are more efficient and those with EVI alone may explain 43% of yield variations. Moreover, taking into account cultural practices in the model improves the score and enables one to forecast 3 months before harvest in 50% and 69% of cases whether yields will be high or low, respectively, with errors of only 10% and 2%, respectively. These results on the predictive potential of sugarcane yields are useful for planning and climate risk management in this sector.


Significance While the overall number of incidents is fewer than a dozen since the rise of the region's jihadist insurgencies in the early 2010s, the trend lends credence to growing warnings about the jihadist threat to coastal West African countries. Concern has focused on Ivory Coast and Benin, but there is also nervousness about Ghana, Togo and even Senegal. Impacts Western governments will boost security assistance to coastal states. Intelligence sharing and joint operations will not forestall cross-border hit-and-run attacks. Most regional states will resort to security-focused responses whose abuses drive jihadist recruitment.


Author(s):  
Marius Schneider ◽  
Vanessa Ferguson

Guinea, also sometimes referred as Guinea-Conakry, is found in West Africa. It is bordered by Guinea-Bissau, Senegal, and Mali in the north and Sierra Leone, Liberia, and Ivory Coast in the south. In 2016, Guinea had a population of 12.6 million over a territory of 245 860 square kilometres (km). Its capital and largest city is Conakry. The official language of Guinea is French, and the currency used is the Guinean franc (GNF).


Author(s):  
Marius Schneider ◽  
Vanessa Ferguson

Burkina Faso is a landlocked country in West Africa, surrounded by six countries: Benin, Ghana, Ivory Coast, Mali, Niger, and Togo. It has an area of 274,200 square kilometres (km) and has a population of 18.6 million inhabitants. Its capital is Ouagadougou, where the biggest airport of Burkina Faso, Ouagadougou International Airport, is found. By 2021, a new airport should be operational at Dosin, located 30 km north from the capital. Having no access to the sea, Burkina Faso relies on the ports of its neighbouring countries for its commercial exchanges. Eighty per cent of the external trade of Burkina Faso is conducted by sea. The main ports available to Burkina Faso are Cotonou, Lomé, Téma, Takoradi, and Abidjan. In practice, the autonomous port of Abidjan is the main port of maritime entry and exit into Burkina Faso, having regained its lost market share caused by the crisis in Ivory Coast in September 2002. International roads link Ouagadougou to all neighbouring ports and a railway line operates between Ouagadougou and Abidjan.


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