Davis A.P.,Royal Botanic Gardens |
Rakotonasolo F.,Parc Botanique et Zoologique de Tsimbazaza |
De Block P.,National Botanic Garden of Belgium
Nordic Journal of Botany | Year: 2010
A new species of Coffea from southern central Madagascar, C. toshii, is described and illustrated. The new species is similar to C. buxifolia but differs due to its short, broad spreading habit (vs narrow habit), conspicuous domatia (vs inconspicuous), consistently red fruit (vs reddish purple to dull purple or red), longer fruiting pedicel (vs shorter), presence of bracts (vs absence) and occurrence at lower elevations (vs high elevation). © The Authors. Journal compilation © Nordic Journal of Botany 2010.
Berry P.E.,Herbarium |
Van Ee B.,University of Puerto Rico at San Juan |
Kainulainen K.,Herbarium |
Razafindraibe H.,Parc Botanique et Zoologique de Tsimbazaza
Candollea | Year: 2016
Croton aleuritoides P.E. Berry (Euphorbiaceae) is described from deciduous forests on tsingy limestone in the Antso River basin of Montagne des Français in northern Madagascar. This remarkable new species is distinguished by its arborescent habit; large, broadly ovate-cordate, deciduous leaves; adaxial epipetiolar glands; sparsely lepidote pubescence; elongate stipules; large seeds with a whitish fleshy covering when fresh; and cinerescent fruits that are indehiscent when dispersing from the tree and only dehiscing much later on the ground. It is remarkable that such a large tree from a relatively small massif close to the regional capital has gone undetected for so long. With its very limited area of occupancy and small population size, it should be considered an endangered species. © CONSERVATOIRE ET JARDIN BOTANIQUES DE GENÈVE 2016.
Vorontsova M.S.,Royal Botanic Gardens |
Haevermans T.,French National Center for Scientific Research |
Haevermans A.,French National Center for Scientific Research |
Razanatsoa J.,Parc Botanique et Zoologique de Tsimbazaza |
And 2 more authors.
Systematic Botany | Year: 2015
The uncommon southern African and Malagasy genus Sartidia in the Aristidoideae, Poaceae resembles the closely related Aristida but has a C3 photosynthetic system, 3-5-veined lower glumes, and a ventrally grooved caryopsis. We present a revision of Sartidia in Madagascar with two species. Sartidia isaloensis is described as new based on its interrupted inflorescence structure, small spikelets, and short awns. A leaf anatomical study and a 13C analysis confirm that S. isaloensis is a C3 species. Sartidia perrieri is likely extinct in the wild. We present descriptions, typification, illustrations, distribution maps, an identification key, and IUCN conservation assessments. A key to the Aristidoideae in Madagascar is also included. © 2015 by the American Society of Plant Taxonomists.
Jenkins R.K.B.,Global Species Programme |
Tognelli M.F.,IUCN CI Biodiversity Assessment Unit |
Bowles P.,IUCN CI Biodiversity Assessment Unit |
Cox N.,IUCN CI Biodiversity Assessment Unit |
And 38 more authors.
PLoS ONE | Year: 2014
Background: An understanding of the conservation status of Madagascar's endemic reptile species is needed to underpin conservation planning and priority setting in this global biodiversity hotspot, and to complement existing information on the island's mammals, birds and amphibians. We report here on the first systematic assessment of the extinction risk of endemic and native non-marine Malagasy snakes, lizards, turtles and tortoises. Methodology/ Principal Findings: Species range maps from The IUCN Red List of Threatened Species were analysed to determine patterns in the distribution of threatened reptile species. These data, in addition to information on threats, were used to identify priority areas and actions for conservation. Thirty-nine percent of the data-sufficient Malagasy reptiles in our analyses are threatened with extinction. Areas in the north, west and south-east were identified as having more threatened species than expected and are therefore conservation priorities. Habitat degradation caused by wood harvesting and non-timber crops was the most pervasive threat. The direct removal of reptiles for international trade and human consumption threatened relatively few species, but were the primary threats for tortoises. Nine threatened reptile species are endemic to recently created protected areas. Conclusions/Significance: With a few alarming exceptions, the threatened endemic reptiles of Madagascar occur within the national network of protected areas, including some taxa that are only found in new protected areas. Threats to these species, however, operate inside and outside protected area boundaries. This analysis has identified priority sites for reptile conservation and completes the conservation assessment of terrestrial vertebrates in Madagascar which will facilitate conservation planning, monitoring and wise-decision making. In sharp contrast with the amphibians, there is significant reptile diversity and regional endemism in the southern and western regions of Madagascar and this study highlights the importance of these arid regions to conserving the island's biodiversity. © 2014 Jenkins et al.
Tessa G.,University of Turin |
Guarino F.M.,University of Naples Federico II |
Randrianirina J.E.,Parc Botanique et Zoologique de Tsimbazaza |
Andreone F.,Museo Regionale di Science Naturali
African Journal of Herpetology | Year: 2011
The false tomato frog, Dyscophus guineti, is an endemic species of eastern Madagascar, typically found in open and swampy areas of mid-elevation forests. We measured 62 females and 70 males from a population from Marovato, next to Brickaville. Snout-vent length of the individuals ranged from 37.7-112.4 mm in females and 37.7-90.7 mm in males, while the mass varied within the range 25.0-80.2 g in males and 25.8-145.6 g in females. Skeletochronological analysis was conducted on clipped phalanges of 20 males and 20 females. The results of these analyses indicated that the age range was 3-7 years in females and 3-6 years in males, and that sexual maturity was attained between 2 and 4 years, comparatively earlier in males than in females. There was a significant correlation between age and size in females. This species appears larger in size but less longlived than the sister-species D. antongilii. © 2011 Herpetological Association of Africa.