39698nas a2200325 45000080041000002450113000412100069001543000009002234900008002325203860200240653001738842653002338859653002538882653003138907653001638938653001238954653001438966653002238980100002339002700002339025700001839048700002039066700002139086700003039107700002939137700002039166700002239186700002439208856014039232 2019 eng d00aMine versus Wild: a plant conservation checklist of the rich Iron-Ore Ngovayang Massif Area (South Cameroon)0 aMine versus Wild a plant conservation checklist of the rich Iron a8-290 v1523 a

16.00 Normal 0 21 false false false FR-BE X-NONE X-NONE

Background and aims – The rapid expansion of human activities in South Cameroon, particularly mining in mountainous areas, threatens this region’s exceptional biodiversity. To comprehend the effects of land-use change on plant diversity and identify conservation priorities, we aim at providing a first comprehensive plant checklist of the Ngovayang Massif, focusing on the two richest plant families, Orchidaceae and Rubiaceae.

Location – The Ngovayang Massif Area (NMA) is located in the South Region of Cameroon. It is covered by lowland and submontane rainforest (100 to 1110 m elevation).

Methods – We compiled a dataset of 6116 georeferenced herbarium specimens, of which 2787 belong to Rubiaceae and Orchidaceae. We used rarefaction methods to explore sampling and diversity patterns, and investigated the altitudinal distribution of rare and/or threatened taxa.

Key results – The NMA, which houses about 1500 vascular plant taxa, is the richest documented area for Rubiaceae in Atlantic Central Africa (ACA) and the fifth for Orchidaceae, with respectively 281 and 111 taxa. Among these taxa, 178 (45%) are endemic to ACA and 67 (17%) are considered globally threatened according to IUCN categories and criteria. We show that higher elevation areas (> 750 m), which are also the main areas targeted for mining, are the richest in endangered and/or rare species. Three new records for Cameroon are reported here.

Conclusion – The NMA represents an Important Plant Area of Cameroon as confirmed by its exceptional plant diversity (> 20% of the total Flora of Cameroon), by the concentration of many threatened and/or restricted range species (10 taxa are strict endemics of the massif) as well as by the threat on rare habitats (i.e. the submontane vegetation above ~750 m elevation). A management plan involving in situ and ex situ conservation actions is urgently needed to reduce the potential threats of future mining activities.

10aBiodiversity10aendangered species10aImportant Plant Area10airon and gold exploitation10anew records10aorchids10aRubiaceae10asubmontane forest1 aDroissart, Vincent1 aLachenaud, Olivier1 aDauby, Gilles1 aDessein, Steven1 aKamdem, Gyslène1 aK., Charlemagne, Nguembou1 aSimo-Droissart, Murielle1 aStévart, Tariq1 aTaedoumg, Hermann1 aSonké, Bonaventure uhttps://rubiaceae-africa.myspecies.info/content/mine-versus-wild-plant-conservation-checklist-rich-iron-ore-ngovayang-massif-area-south38768nas a2200277 45000080041000002450103000412100069001442600021002133000012002344900007002465203791300253653001138166653001338177653002238190653001038212653001038222653001238232653001638244653001438260653001238274653001338286100001838299700002338317700002438340856012638364 2018 eng d00aFour new species of Sabicea (Rubiaceae) from tropical Africa, with additional notes on the genus. 0 aFour new species of Sabicea Rubiaceae from tropical Africa with  c23 November 2018 a277-2930 v733 a

Four new species of Sabicea (Rubiaceae) from tropical Africa are described and illustrated: S. desseinii from Cameroon, Gabon and Equatorial Guinea, S. ezangae from Gabon, S. jongkindii from Liberia and Ghana, and S. uniflora from Gabon. Their affinities are discussed, and the conservation status of each species is assessed. Sabicea speciosissima K.Schum. is excluded from the genus and synonymised with Rothmannia octomera (Hook.) Fagerl. Three other species are sunk into synonymy:  Sabicea gigantea Wernham with S. dewevrei De Wild., S. arachnoidea Hutch. & Dalziel with S. discolor Stapf, and S. neglecta Hepper with S. speciosa K.Schum.

10aAfrica10aCameroon10aEquatorial Guinea10aGabon10aGhana10aLiberia10anew species10aRubiaceae10aSabicea10ataxonomy1 aZemagho, Lise1 aLachenaud, Olivier1 aSonké, Bonaventure uhttps://rubiaceae-africa.myspecies.info/content/four-new-species-sabicea-rubiaceae-tropical-africa-additional-notes-genus01043nas a2200241 4500008004100000245009400041210006900135300000800204490000700212520025300219653001300472653001400485653001700499653002900516653001500545653001400560653001500574100002400589700002600613700001800639700001700657856012700674 2006 eng d00aA new species of Chassalia (Rubiaceae, Rubioideae) from southern Cameroon: C. bipindensis0 anew species of Chassalia Rubiaceae Rubioideae from southern Came a5890 v613 a

Chassalia bipindensis Sonké, Nguembou & A. P. Davis (Rubiaceae), a new species from southern Cameroon, is described and illustrated. The conservation status and taxonomic affinities of the new species are
discussed.

10aCameroon10aChassalia10aconservation10aIUCN Red List Categories10arainforest10aRubiaceae10aRubioideae1 aSonké, Bonaventure1 aNguembou, Charlemagne1 aCheek, Martin1 aDavis, Aaron uhttps://rubiaceae-africa.myspecies.info/content/new-species-chassalia-rubiaceae-rubioideae-southern-cameroon-c-bipindensis01136nas a2200229 4500008004100000245010600041210007000147300000800217490000600225520032900231653001300560653001700573653001600590653001400606653002400620100002600644700002100670700002300691700001900714700002400733856014900757 2009 eng d00a Une espèce nouvelle de Bertiera (sous-genre Bertierella, Rubiaceae) d’Afrique centrale atlantique0 aUne espèce nouvelle de Bertiera sousgenre Bertierella Rubiaceae  a4060 v23 a

A new species belonging to the genus Bertiera (subgenus Bertierella, Rubiaceae)
from West Central Africa (Cameroon, Equatorial Guinea and Gabon) is described.
Its diagnostic characters are elucidated, its taxonomic affi nities are
discussed and notes on its conservation status are provided.

10aBertiera10aconservation10anew species10aRubiaceae10aWest Central Africa1 aNguembou, Charlemagne1 aEwedje, D.K., E.1 aDroissart, Vincent1 aStevart, Tariq1 aSonké, Bonaventure uhttps://rubiaceae-africa.myspecies.info/content/une-esp%C3%A8ce-nouvelle-de-bertiera-sous-genre-bertierella-rubiaceae-d%E2%80%99afrique-centrale01787nas a2200205 4500008004100000245008600041210006900127300000800196490000700204520109400211653001701305653001001322653003301332653001401365653001301379100002001392700002301412700002401435856012201459 2011 eng d00aColletoecema gabonensis, a third species of an unusual African genus of Rubiaceae0 aColletoecema gabonensis a third species of an unusual African ge a2190 v633 a

As a result of ongoing studies of the Rubiaceae of Gabon, the new species
Colletoecema gabonensis is here described and illustrated. It is endemic to Gabon,
where it is the only species of the genus, and is so far only known from three collections
from the Ogooué-Lolo and Ngounié provinces. The new species is morphologically
intermediate between its two congeners, C. dewevrei (from Cameroon, Central
African Republic, Republic of the Congo, DR Congo, and Angola) and C. magna
(endemic to Cameroon). The new species agrees with C. dewevrei in having flowers
with exserted anthers and style, but differs in its sessile flowers and fruits. In the latter
characters, it resembles C. magna, from which it can be separated by its smaller fruits
and leaves, and by its different floral morphology. An IUCN conservation assessment
has been made and the species is provisionally assessed as Vulnerable, based on its
restricted area of occupancy and the small number of known locations

10aColletoecema10aGabon10aIUCN conservation assessment10aRubiaceae10ataxonomy1 aDessein, Steven1 aLachenaud, Olivier1 aSonké, Bonaventure uhttps://rubiaceae-africa.myspecies.info/content/colletoecema-gabonensis-third-species-unusual-african-genus-rubiaceae01685nas a2200421 4500008004400000020001400044245012400058210006900182300001200251490000700263520050100270653001800771653001100789653002700800653001600827653001300843653001900856653001200875653002500887653001700912653002200929653001500951653002300966653001100989653003001000653001601030653001101046653001101057653001401068653001301082653001801095653003201113100001501145700001401160700002101174700001601195856005201211 2005 Frendh  a1280-857100aA new species of Bertiera Aubl. (Rubiaceae) in subgenus Bertierella discovered in Equatorial Guinea and Cameroon0 anew species of iBertierai Aubl Rubiaceae in subgenus Bertierella a309-3150 v273 a

A new species of Bertiera (Rubiaceae) from Equatorial Guinea and Cameroon, Bertiera rosseeliana Sonkd, Esono & Nguembou, is described and illustrated here. This new species belongs to subgenus Bertierella and appears to be closely related to Bertiera naucleoides. It differs from this species, however, by the features stated in the diagnosis: glabrous leaf blade (not puberulous); calyx lobes shorter (2-3 not 7-8 mm); corolla tube longer (18-20 not 5-6 mm); fruits without pedicel.

10aACP Countries10aAfrica10aAfrica South of Sahara10aangiosperms10aCameroon10aCentral Africa10acorolla10aDeveloping Countries10adicotyledons10aEquatorial Guinea10aeukaryotes10aFrancophone Africa10afruits10aLeast Developed Countries10anew species10apetals10aplants10aRubiaceae10aRubiales10aSpermatophyta10aZZ380Taxonomy and Evolution1 aSonké, B.1 aEsono, P.1 aNguembou, K., C.1 aStevart, T. uhttps://rubiaceae-africa.myspecies.info/node/49