Diversité floristique des épiphytes et hémiparasites vasculaires de l’écosystème forestier urbain de Brazzaville, Congo

Kimpouni, Victor; Lenga-Sacadura, M.Y.; Kalath, R.S.; Kiangana-Ngoyi, L.

doi:10.4314/jab.v117i1.7

Cited by 9 publications

(21 citation statements)

References 15 publications

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“…is double weakness would correlate with the erosion of biodiversity caused by the drastic regression of natural urban and periurban forests [8,40]. is degradation of green spaces in Brazzaville does not allow these entities to provide goods and services that are vested in them [4,9,[13][14][15][16].…”

Section: Green Spaces and Biodiversitymentioning

confidence: 99%

“…e preponderance of exotic species, especially shrubs, does not guarantee the conservation and enhancement of the local flora [40]. A comparison of the specific and floristic diversity of green spaces and periurban forests in Brazzaville shows that they are more diversified [8,[41][42][43][44][45]. However, most of their taxa are not present in green spaces.…”

Section: Green Spaces and Biodiversitymentioning

confidence: 99%

“…Areas of natural urban and periurban forests around the world are shrinking dramatically, and with them biodiversity is eroding [8]. Green spaces would be one of the ideal solutions to this phenomenon [9,10].…”

Section: Introductionmentioning

confidence: 99%

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Sociocultural and Ecological Dynamics of Green Spaces in Brazzaville (Congo)

Kimpouni

Nzila

Watha-Ndoudy³

et al. 2020

International Journal of Ecology

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e methodology is based on literature review and floristic and equipment inventory. Nine green spaces spread over two out of nine townships in the capital city. Four are located in Bacongo and five in Poto-Poto. According to the classification standards, 5 squares and 4 gardens were studied. Except for one square, all the others, including the gardens, are planted with trees. e equipment inventory lists 183 benches, including 63.83% permanently and/or partially in the sun, 4 playgrounds, no games for children, and 3 cultural monuments. e flora and health of the trees stands shows 186 trees and 279 shrubs, all corresponding to 26 species. An examination of the health status reveals that 57% of trees show anthropogenic injuries. Floral analysis shows that exotic plants (76.92%) predominate over local plants (23.07%). e average basal area of trees in all green spaces is 1.95 m 2 ·ha − 1 . e diametric structure is erratic within all green spaces, with a dominance of large diameter subjects. is leads to poor natural regeneration of woody plants. e green spaces in Brazzaville, which are very unevenly distributed within the urban fabric, do not meet the international standards disseminated by the World Health Organization (WHO) and do not fully play their biodiversity conservation and recreational and ecological functions. History of green spaces in Brazzaville states that no creation was born after independence. e existing land has been reduced in size, and the new land has been used for other purposes.

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Section: Green Spaces and Biodiversitymentioning

confidence: 99%

Section: Green Spaces and Biodiversitymentioning

confidence: 99%

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Sociocultural and Ecological Dynamics of Green Spaces in Brazzaville (Congo)

Kimpouni

Nzila

Watha-Ndoudy³

et al. 2020

International Journal of Ecology

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“…With more than a dozen taxa with proven medicinal properties (Mangifera indica, Spondias mombin, Annona muricata, Ceiba pentandra, Dacryodes edulis, Senna siamea, Terminalia superba, Persea americana, Ficus vogeliana, Elaeis guineensis, Millettia laurentii, Millettia versicolor), urban floriculture is a rampart against disease [3,38]. Indeed, the many tangible signs of anthropogenic debarking confirm the perception and expectations of populations [11][12]. However, this activity, which is beneficial to human well-being, affects the tree population by disrupting their metabolism and exposing internal organs to pathogenic microorganisms and boring insects [11][12].…”

Section: Direct Benefitsmentioning

confidence: 99%

“…In Asia, from 1996 to 1997, mention should be made of China (Hong Kong), Malaysia (Kuala Lumpur), Singapore (Singapore) and Iran (Tehran)]; in Latin America, from 1995 to 1996, Brazil (Rio de Janeiro) and Ecuador (Quito)]; in Africa, mention Egypt (Cairo), Senegal (Dakar), Niger (Niamey), Mauritania (Nouakchott), Burkina Faso (Ouagadougou), and Chad (Ndjamena) [1,3]. In addition to these cases, the theme of urban and peri-urban forestry has been of interest to many researchers in developing countries [4][5] in Togo; [6] in the DRC; [7][8][9][10][11][12][13] in Congo.…”

Section: Introductionmentioning

confidence: 99%

Urban Forestry and Ecosystem Services in the City of Dolisie (Congo)

Kimpouni¹

2019

AJAF

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The study, conducted in the city of Dolisie, provides an overview of plant diversity, ethnobotanical and ecosystem services, people's expectations and perceptions of urban forestry. It is based on the botanical inventory and interviews involving city managers and populations. A total of 34 species belonging to 26 genera and 17 families have been recorded with a fruit tree dominance. The role and importance of trees in urban areas is well perceived by the population. Gender and education level influence urban forestry preferences and expectations. Men with at least a secondary level of education exploit the aesthetic aspects of the environment, while women and individuals with at most a primary level like food, phytotherapeutic and financial aspects. The 10 urban forestry properties identified constitute three categories whose ethnobotanical use values stand out: supply services with 1.96 and regulation services with 1.97. A gender and educational level analysis reveals differences, sometimes significant, in the ethnobotanical use value of a property. As for the level of fidelity, it is carried by the same taxa, especially fruit trees, both in food and phytotherapy. At a time when humanity is suffering from the harmful effects of climate change, the value of urban forestry is undeniable in mitigating the heat islands generated by our cities.

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Accidental epiphytes: Ecological insights and evolutionary implications

Hoeber

Zotz

2022

Ecological Monographs

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Vascular epiphytes are an important component of many ecosystems and constitute a substantial part of global plant diversity. In this context, accidental epiphytism, that is, the opportunistic epiphytic growth of typically terrestrial species, deserves special attention because it provides crucial insights into the global distribution of vascular epiphytes and the initial evolution of epiphytic lineages. Even though accidental epiphytes have been mentioned in the literature for more than a century, they have been neglected in most epiphyte studies. Only recently has accidental epiphytism been investigated more thoroughly. Therefore, the aim of this article is to provide a comprehensive review of the ecological basis and evolutionary relevance of this common but largely neglected phenomenon and to highlight open questions and promising research directions. Our central statement—that any species has the potential to grow epiphytically given the availability of suitable microhabitats and successful dispersal—is backed up by a compilation of observations of accidental epiphytes from numerous ecosystems with diverse climates, even including semiarid Mediterranean ones. A variety of arboreal microhabitats and environmental conditions conform to the ecological niche of typical terrestrial species, with the availability of such microhabitats depending on the interaction of local climate conditions, host tree age, and host species identity. Whenever suitable microhabitats are available in tree crowns, accidental epiphytism is limited primarily by dispersal. In an evolutionary context, the conquest of forest canopy represents an ecological opportunity where accidental epiphytes act as links between terrestrial and epiphytic life forms. We discuss two fundamental scenarios with sympatric speciation, selective pressure, autopolyploidy, and allopatric speciation as underlying mechanisms in the transition from terrestrial to epiphytic growth. In conclusion, we argue that accidental epiphytism is a substrate and dispersal‐dependent phenomenon and that, both from an individual perspective and an evolutionary perspective, epiphytism reflects the occupation of suitable but previously unexploited arboreal microhabitats. Acknowledging the fundamental principles that plant growth is opportunistic and that dispersal is a stochastic process can decisively improve our understanding of species distributions and other ecological patterns, as in the case of accidental epiphytism.

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Diversité floristique des épiphytes et hémiparasites vasculaires de l’écosystème forestier urbain de Brazzaville, Congo

Cited by 9 publications

References 15 publications

Sociocultural and Ecological Dynamics of Green Spaces in Brazzaville (Congo)

Sociocultural and Ecological Dynamics of Green Spaces in Brazzaville (Congo)

Urban Forestry and Ecosystem Services in the City of Dolisie (Congo)

Accidental epiphytes: Ecological insights and evolutionary implications

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