Cameroon is one of the most biodiverse countries in Africa, though its flora remains incompletely known. Annonaceae, a major pantropical family with 113 genera and about 2550 species, plays an essential role in Cameroon. Across Africa, and in Cameroon in particular, Annonaceae play an important role both in terms of species diversity and individual density.
The famous French botanist André Aubréville (1897-1982) said of Annonaceae that they are among the families that best characterize floristically tropical rain forests in Africa.
In this volume of the Flora of Cameroon, 166 native taxa representing 163 species in 28 native genera within the family Annonaceae are described. A total of 22 species (about 13%) are endemic to the country. Distribution maps and diversity analyses are based on a taxonomically verified database of 2073 collections.
Across Africa, Cameroon is a center of diversity for Annonaceae harboring one of the highest numbers of species and genera. For example, Cameroon harbors the highest number of African species for the only pantropical genus of Annonaceae, Xylopia.
Annonaceae are found across all 10 administrative regions of Cameroon but diversity is concentrated within the tropical rain forest areas situated in the south and South-West. The areas around Bipindi and Mount Cameroon show the highest levels of diversity, but this is correlated with collection effort.
Biodiversity Hotspots Exploring Unique Habitats of endemic species found nowhere else on Earth
Read also: A closer look at Africa
Here is a list of the number of 28 native genera recorded for Cameroon plus 12 continental African genera not found in Cameroon, with known accepted number of species in Cameroon, for continental Africa (including the Gulf of Guinea Islands, but excluding Madagascar) and percentage of species for each genus found within Cameroon.
| Genus | Species in Cameroon | Species in Africa | Percentage in Cameroon |
|---|---|---|---|
| Monanthotaxis | 31 | 79 | 39% |
| Xylopia | 22 | 45 | 49% |
| Uvariopsis | 15 | 22 | 68% |
| Piptostigma | 10 | 10 | 100% |
A total of 2073 collections were seen for this treatment. Of these 1973 were identified to species level or below, while 17 were only identified as Annonaceae sp. These were mainly sterile collections.
Annonaceae have been collected from all 10 regions in Cameroon, but most sampling comes from the southern regions of the country with the South Region having the highest number of Annonaceae collections while the Far-North had the fewest (most diverse: Littoral Region: 139; Central Region: 264; East Region: 258; South Region: 631; South-West Region: 612).
In terms of species diversity, there are two main hotspots, one located in the SU around Bipindi in the northwestern South Region (with 46 species recorded), and one in the SU around Mount Cameroon in the South-West region (with 40 species recorded).
Regions of high Annonaceae species diversity are mainly located in the Atlantic forests (around Yaoundé, southern Cameroon Volcanic Line, and western South region (Bipindi, Kribi, Campo), and to a lesser level in the southern part of the East region.
Read also: Guide to Silk African Violet Plants
Genus diversity is also concentrated in the Atlantic forests, with hotspots along the Cameroonian Volcanic Line, and towards the western area of the South region. Once again, the SU around Bipindi has the highest generic diversity with 19 (mean: 3.6 genera / SU) recorded genera.
Xylopia is the most collected genus across Cameroon (277 collections), followed by Monanthotaxis (196 collections), while the genera Sirdavidia and Toussaintia are only known by a single Cameroonian collection to date.
Greenwayodendronsuaveolens is the most collected species (119 collections), almost twice as many as the next five most commonly collected species. Finally, 18 species are known from a single collection, 102 species are known from 10 or fewer collections, and five are known from 50 or more collections.
A total of 95 species received a conservation status from the International Union for the Conservation of Nature, IUCN. However, we excluded the species Uvariodendronfuscum which is now...
The hot and humid south supports dense rainforests in which hardwood evergreen trees-including mahogany, ebony, obeche, dibetu, and sapelli-may grow more than 200 feet (60 metres) tall. There are large numbers of orchids and ferns. Mangroves grow along the coasts and at the mouths of rivers.
Read also: Plants of Nigeria
The rainforest gives way to the semi-deciduous forest of the central region, where a number of tree species shed their leaves during the dry season. North of the semi-deciduous forest, the vegetation is composed of wooded savanna with scattered trees 10 to 60 feet (3 to 18 metres) high.
The tropical rainforest at elevations between 4,000 and 8,000 feet (1,200 and 2,400 metres) differs from that of the lowlands: the trees are smaller, are of different species, and are festooned with mosses, lichens, and other epiphytes. Above the rainforest zone are drier woodlands, tall grasslands, or patches of mountain bamboo. Above about 7,800 feet (2,400 metres) in the interior and above about 10,000 feet (3,000 metres) on Mount Cameroon, short grasses predominate.
The country’s dense forests are inhabited by screaming red and green monkeys, chimpanzees, and mandrills, as well as rodents, bats, and numerous birds-from tiny sunbirds to giant hawks and eagles. A few elephants survive in the forest and in the grassy woodlands, where baboons and several types of antelope are the most common animals.
Waza National Park in the north, which was originally created for the protection of elephants, giraffes, and antelope, abounds in both forest and savanna animals, including monkeys, baboons, lions, leopards, and birds that range from white and gray pelicans to spotted waders. To the south lies Dja Faunal Reserve, one of the best-protected rainforests in Africa and a reserve renowned for its biodiversity. In the late 1980s the reserve was designated a UNESCO World Heritage site.
Sustainable Agriculture and Reforestation Initiatives
In the heart of Cameroon, Africa, Moka Origins embarked on a transformative initiative in 2015 to support local farmers and the environment. At Moka Origins, their commitment to sustainable agriculture drives them towards their goal of planting 1,000,000 trees by 2025.
They are extremely excited to announce that this year, they have just planted 100,000 more trees, further solidifying their commitment to a greener future for Cameroon and the planet as a whole. This collaborative effort isn't just about enhancing the livelihoods of coffee and cacao farmers; it's about contributing to preserving our precious environment.
Their vision centers around supporting farmers with the tools they need to boost their profits and yields. By providing seedlings for coffee and cocoa trees, they're not merely planting crops, they're sowing the seeds of opportunity and growth within our local agricultural sector.
But their efforts go beyond coffee and cocoa. They're taking steps to encourage income diversification by helping farmers plant fruit trees like mangoes, avocados, and bananas. These fruit trees not only expand the range of products our farmers can offer, but they also enhance the overall resilience of our ecosystem.
As these fruit trees take root and yield their delectable produce, they contribute to a diverse revenue stream that safeguards farmers against the uncertainties of agriculture.
Agroforestry: A Harmonious Blend
One of the most commendable aspects of this initiative is its dual impact on both farmers and the environment. As coffee and cocoa trees intertwine with mango, avocado, and banana trees, a harmonious blend of vegetation emerges. The shade provided by this collective canopy becomes a sanctuary from the sun's intensity, nurturing a climate that's ideal for coffee and cocoa plants.
Their approach aligns seamlessly with the principles of agroforestry, a practice that melds agriculture and forestry to create a harmonious coexistence between nature and cultivation. As fruit trees intertwine with coffee and cocoa crops, they weave a tapestry of biodiversity that shelters birds, insects, and other wildlife. This nurturing environment fosters ecological equilibrium, resulting in a thriving ecosystem that sustains not only our farmers' livelihoods but also enriches the surrounding landscape.
However, their commitment extends beyond planting trees alone. The farmers who receive our seedlings gain access to a treasure trove of knowledge and expertise from our Moka Origins farming experts. By offering guidance on techniques like water conservation, natural pest management, and soil health maintenance, they ensure that farmers experience not only short-term gains but also long-term land vitality.
The ripple effects of their efforts extend beyond individual farms. As coffee, cocoa, and fruit crops flourish, they contribute to the overall economic development of our region. Increased yields lead to higher incomes for farmers, allowing them to provide better education, healthcare, and living conditions for their families. This influx of resources also stimulates the local economy, generating job opportunities and fostering growth in related industries.
Their initiative stands as a testament to the power of collaboration and conscious business practices. By partnering with our local farming community, they aren't merely addressing immediate challenges; they're envisioning a future where sustainable agriculture forms the bedrock of prosperity. Their mission in Cameroon is a testament to the potential of conscious businesses to drive positive change.
As they continue to grow and expand their project, they invite others to join them on this journey towards a more sustainable and harmonious world.
Popular articles:
tags: #Cameroon
