The risks incurred at work are many; all depend of the type of activity. It is an obligation to assure the security of the workers in all areas of work; hence an assessment of the risks must be done in order to protect the lives of the workers.

Clear instructions are given before any operation

At this moment, the main work environment of Green Connexion is aquatic (streams and rivers). This ubiquity in water demands for good assessment of the risks incurred in this type of environment.

Working in an inhospitable environment

The main risk working in waters being drowning, several other risks exist such as sprains, wounds, hurts, fracture of body members and the chemical or biologic risks (Water pollution, contamination to onchocerciasis or river blindness etc.). Green Connexion pays particular attention to the well-being of her members.

Green Connexion organizes yearly training sessions in nautical first-aid in order to teach participants the basic notions in first-aid; and its members regularly visit specialists for onchocerciasis’ controls.

The trainings take place in an alternation of theoretical and practical phases. The theoretical phase first of all consists of listing the different types of first-aid; the nautical first-aid being the main aim of the training, more attention is given to it.


Close protection for less risk

Training by example

First of all, learners are endowed with nautical first-aid notions, followed by the presentation of the security measures to be taken for an activity in aquatic environment: to always have first aid kits; to be accompanied always by at least a swimming expert, to carry the Individual.

Floating Clothing (IFC) or of a life jacket; to carry an adapted helmet, non-skid shoes and mountaineering ropes (for those that are going to sail in the rocky zones or the cascades).

One of the major points of the training is the presentation of the different types of accidents which are likely to occur, as well as the emergency measures to be taken in case of drowning, sprain, injury, and fractures of body members.

Example of what to do in case of leg’s fracture

Lateral position of security

Hence, participants are taught that in case of drowning or submersion, the first thing to do is to take the victim out of water, cover him immediately,

and to alert the emergency units and begin to treat him. If the victim is conscious and breaths normally, after having dried and covered, he is put in a half sitting position. If he starts coughing or spitting water by the nose or the mouth, he should be placed in lateral position of security to facilitate the evacuation of the fluid. In the same way, manipulations of victims who have lost memory but breathing normally, not breathing at all or breathing in an irregular manner are demonstrated.


NB: The set of manipulations should not last any more 30 to 40 seconds.

Usage of triangular scarfs

For the cases of sprain and strain, an elastic bandaging is recommended as well as for the cases of injuries. In the same way, it is always advisable not to tighten the bandaging otherwise it is going to reduce blood circulation. Bandaging should be done at the most distant point from the heart. In case of fracture (arm, forearm, thigh, tibia) techniques of immobilization with the help of the triangular scarfs are advised. Thanks to this initiative, Green Connexion team is always ready to carry through her activities and always move along with a first aid box in every field trip.

A Green Connexion team in the field

Some exploration of Green Connexion

Some exploration of Green Connexion

Green Connexion et ses membres à l’NHPC pour la journée Mondiale de la Biodiversité

Le projet hydroélectrique de Nachtigal Amont (420 MW), qui comprend la construction de barrages en béton compacté au rouleau (BCR), d’un canal usinier, d’une centrale hydroélectrique dotée de sept groupes de 60 MW et d’une ligne d’évacuation d’énergie jusqu’à Yaoundé, se situe sur le fleuve Sanaga à 65 km de Yaoundé.

Ce projet stratégique pour l’Etat du Cameroun est développé par une société projet camerounaise, Nachtigal Hydro Power Company (NHPC), donc les actionnaires sont EDF International, l’État du Cameroun et la Société Financière Internationale, qui s’est fixée pour ambition de se conformer aux meilleures pratiques nationales et internationales en matière environnementale et sociale, d’aménagement hydraulique et de construction d’infrastructures.


Green Connexion et ses membres à l’NHPC pour la journée Mondiale de la Biodiversité

Green Connection and its members to IUCN for the World Biodiversity Day

The International Union for Conservation of Nature (IUCN) is amembership Union uniquely composed of both government and civil society organisations. It provides public, private and non-governmental organisations with the knowledge and tools that enable human progress, economic development and nature conservation to take place together.

Created in 1948, IUCN has evolved into the world’s largest and most diverse environmental network. It harnesses the experience, resources and reach of its 1,300 Member organisations and the input of some 16,000 experts. IUCN is the global authority on the status of the natural world and the measures needed to safeguard it. Our experts are organised into six commissions dedicated to species survival, environmental law, protected areas, social and economic policy, ecosystem management, and education and communication.

Visit to IUCN Cameroon

Green Connexion’s actions for the conservation of freshwater plants

Green Connexion’s actions for the conservation of freshwater plants in Cameroon (2014 – 2016).

Preasious Forbi, Marlène Ngansop T., Mireil Tchoupou V., Eric Ngansop T. & Jean-Paul Ghogue (May 09th 2017).

The Green Connexion team during a survey on the Sanaga River. Photo@greenconnexion. 2015.

In Cameroon, we are currently working in the domain of conservation of freshwater plants in the Sanaga, Nyong, Mbam, Ntem and Djikem rivers. We focus mainly on the protection and conservation of plants directly threatened by the construction of retention or hydroelectric dams.

In the Sanaga River, in contract with the Nachtigal hydroelectric project since 2015, we are trying to save from extinction the plants Ledermanniella sanagaensis (CR= Critically Endangered of extinction) and of the Nachtigal falls where the Nachtigal dam will be constructed, Ledermanniella thalloidea (EN= Endangered of extinction) both species belonging
We are carrying out the same work as for the Mbam in the Djikem River which flows into the Sanaga River around Mbandjock.

The Green Connexion team on the Nyong River waterfalls at Dipippy. Photo@greenconnexion. 2016.

The Nyong is the second largest river in Cameroon after the Sanaga. Under a sub-contract with Oréade-Brèche working for the Platinum Power company, Green Connexion in 2016 carried out in the above river a short inventory of all freshwater aquatic species and the results showed that it contains many important species from a conservation point of view because they are threatened at different levels. We can cite the following examples: Saxicollela nana (endemic to the Nyong River) and Ledermanniella boumiensis all two (VUD2), Ledermanniella schlechteri, Ledermanniella
bifurcata and Macropodiella heteromorpha, all three (VU B2ab(ii,iii)) and Impatiens letouzeyi (EN).

The Green Connexion team during a mapping mission on the Ntem River. Photo@greenconnexion. 2015

Compared to the Sanaga River currently, the Nyong River remains relatively less perturbed. For all projects on this note, the examples of the threatened plants listed above show the importance of the conservation initiatives of freshwater aquatic plants at the base.

Generally, when a big project is carried out on a big water course, even with a good will, in situ conservation actions (on the project site) are often difficult and costly. In this context, the transplantation (removing the threaten species and plant them somewhere else), the search and the conservation of new populations are often envisaged as the best alternative.

The Green Connexion team during a water sampling on the River Dibang. Photo@greenconnexion. 2014.

The Green Connexion team  during an inventory on the River Ntem’s waterfalls. Photo@greenconnexion. 2015.

The Green Connexion team during a crossing of the Biwomé River. Photo@greenconnexion. 2015.









However, most freshwater aquatic plants are very eye-catching in terms of the physic anc chemical conditions of the milieu. To guarantee a chance of success to a possible transplantation, the conditions in the source medium should be close to, if not identical, to those in the host medium.

From 2014-2015, under the financing of the Rufford Small Grants, we studied the physico-chemical conditions of water in the Sanaga River at Nachtigal, and at Edéa, and then compared them to those of waters from the Afamba, Mbam, Kelle, Nyong, Dibang, Lep Riton and Ngwei rivers.

The Green Connexion team during a mapping mission on the Ntem River. Photo@greenconnexion. 2015

The Green Connexion team during notes taking on the Ntem’s riverside. Photo@greenconnexion. 2015.

Statistically, the physico-chemical characteristics of the Kelle and Lep Riton rivers were closer to those of the Sanaga River at Edéa and at Nachtigal.

Due to this fact, these two rivers constituted the best sites for the potential transplantation of endemic Podostemaceae from the threatened sites of Edéa and Nachtigal. However, these two rivers are not tributary to the Sanaga River. Taking into consideration the size and parental link with the Sanaga River, the Mbam river was also retained as a site for eventual transplantation.


The Green Connexion team during a water sampling on the River Dibang. Photo@greenconnexion. 2014.


Cameroon has many dams. Actions to conserve freshwater aquatic plants in the watercourses where these dams are built are, if non-existent, but

Echantillons d’eau

diverse and isolated. Yet a watercourse holds in all. When several dams are built there, their conservation actions must be concerted and coordinated. In the near future, we envisage,
together with the Cameroon Ministries of Water and Energy, Environment and Nature Protection, IUCN and all stakeholders in the field, the creation of a common platform for reflection and exchange on actions that favor the conservation of freshwater biodiversity in the major rivers of Cameroon.

Sanaga: A very solicited River.

Marlène Ngansop, Preacious Forbi & Jean-Paul Ghogue.

Green Connexion (May 04th, 2017)


Localization of River Sanaga in Cameroon. Source: Wikipedia


The Sanaga watershed, evaluated at 133.000 km2, occupies the Central part of Cameroon in the forest-savannah contact zone and is located between
latitudes N3o22and N7o22’, and longitudes E 9o45’ and E 14°57’ (Kpoumié et al., 2012). From its main sources on the Adamawa plateau to the mouth of the Atlantic Ocean, the Sanaga River flows through four regions of Cameroon namely: the Adamawa, East, Centre and Littoral.


The Sanaga River covers a distance of about 920 km from its source to the Gulf of Guinea with a rate of flow of about 2200 – 3200 m3/s during the high rainy season. Three main divisions are distinguished in the river namely: the upper Sanaga dominated by the Djerem River in Adamawa; the middle Sanaga represented by the Mbam River which originates from the Western Highlands and joins the Sanaga some 80 km upstream from the mouth of the river; and the lower Sanaga which is the lower part after the Edea hydroelectric dam right to the Atlantic Ocean. Several small rivers in the Sanaga basin are tributary to the Sanaga River.  The river is rich in waterfalls and rapids. The water bed is rocky in most parts with huge deposits of sand.

A very solicited river

Several activities take places in the Sanaga river:

Fishing. The reservoirs are over-fished, often by fishermen originating from other parts of the country and neighbouring countries. In fact fishing is not the main activity of local people of the area. They mostly need the river and its associated wetlands for domestic use and as source of fertilizer for their lands during floods.

Fisherman and children at the shore of Sanaga River (photo@green Connexion).

Sand collection at the shore of the river


Sand extraction is the most lucrative activities in the Sanaga river basin. Many thousands of “sand fishermen” as they are called can be seen daily diving all along the river, or driving heavy canoes filled with sand or loading lorrys. Many hundreds of lorrys can then be loaded every day on the river’s shore. Adults as well as children take part in this activity.


Because of its important rate of flow, the river is very solicited for dam construction. In fact, throughout the river basin, two types of dams areconstructed: Hydroelectric dams for direct electricity production (Edea, Song Loulou) and  detention dams to regulate the flow rate of water in the Sanaga River (Mbakaou, Bamendjin, Mapé and Lom-Pangar). The construction of the Nachtigal dam will start soon while many other dams are planned for this same river.

Edea hydroelectric dam. Photo@ Green Connexion

Nachtigal rapids on the Sanaga River. Photo@Green Connexion