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Registros recuperados: 42
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A Multisector Framework for Assessing Community-Based Forest Management: Lessons from Madagascar Ecology and Society
Raik, Daniela B; Cornell University; dbr23@cornell.edu; Decker, Daniel J; Cornell University; djd6@cornell.edu.
Community-based forest management has proliferated throughout Africa as national governments have decentralized the administration of public forestry. Community-based forestry has taken multiple forms, depending on the assortment of land-tenure systems, forest-use norms, wood demand, and social organization, among others factors. Nature, Wealth, and Power is an analytical framework that has been developed from experiences in natural resource management in Africa. In this paper, we amend the framework to People, Nature, Wealth, and Power (PNWP), and propose it as an analytical lens for community-based forest management initiatives. We use the PNWP framework to assess the responsiveness of contractual forest management in the Menabe region of Madagascar to...
Tipo: Peer-Reviewed Insight Palavras-chave: Community-based forest management; Decentralization; Forestry; Madagascar.
Ano: 2007
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A new name in Psychotria (Rubiaceae–Psychotrieae): Psychotria andramontaensis Naturalis
Davis, A.P.; Govaerts, R..
In order to provide an accepted name for the later homonym P. bremekampiana A.P.Davis & Govaerts we propose a new name in Psychotria: P. andramontaensis A.P.Davis & Govaerts.
Tipo: Article / Letter to the editor Palavras-chave: Psychotrieae; Mapouria; Psychotria; Madagascar.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/524644
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A new species of the genus Phaenocarpa Foerster from Madagascar (Hymenoptera: Braconidae: Alysiinae) Naturalis
Achterberg, C. van.
A new species of the genus Phaenocarpa Foerster (Hymenoptera: Braconidae: Alysiinae) with a short ovipositor, P. vanbruggeni spec. nov., from Madagascar is described and illustrated.
Tipo: Article / Letter to the editor Palavras-chave: Hymenoptera; Braconidae; Alysiinae; Alysiini; Phaenocarpa; Afrotropical; Madagascar; 42.75.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/311946
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A note on the status of the enigmatic monotypic genus Adelosa (Labiatae) Naturalis
Kok, R.P.J. de.
The type specimen of Adelosa microphilla Blume has been examined and the results compared with the morphology of several other genera within the Labiatae. On the basis of this comparison it was concluded that Adelosa microphilla is most likely to be synonymous with a species of Clerodendrum L.
Tipo: Article / Letter to the editor Palavras-chave: Adelosa; Clerodendrum; Madagascar.
Ano: 2001 URL: http://www.repository.naturalis.nl/record/525045
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A revision of Madagascan Bertiera (Rubiaceae) Naturalis
Wittle, P.M.; Davis, A.P..
A taxonomic revision of the Madagascan representatives of the genus Bertiera is presented, to include three species, B. brevithyrsa, B. crinita and B. longithyrsa. A key to their identification is provided, each species is fully described, and summaries of distribution, habitat and ecology, and phenology are given; conservation assessments are also provided. Bertiera brevithyrsa is described as new species; B. crinita represents a new combination, and a lectotype is designated for this name.
Tipo: Article / Letter to the editor Palavras-chave: Bertiera; Bertiereae; Conservation; IUCN Red List Categories; Madagascar; Rubiaceae.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/525748
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Accounting for the Ecological Dimension in Participatory Research and Development: Lessons Learned from Indonesia and Madagascar Ecology and Society
Pfund, Jean-Laurent; International Center for Forestry Research (CIFOR); j.pfund@cgiar.org.
Tipo: Peer-Reviewed Reports Palavras-chave: Ecological dimension; Indonesia; Madagascar; Management of natural resources; Multiple stakeholders; Participatory research and development; Tropical forest landscapes.
Ano: 2008
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Alternative to Disincentive Rice Producer Prices in Madagascar: Case Study in Alaotra Prefecture and Bongolava Prefecture AgEcon
Ralandison, Tsilavo; Shiratake, Yoshiharu.
This study identifies the reasons for low producer prices of rice that have not covered its production costs for many years in Madagascar. The following points will be discussed: the farmers’ marketing conditions and the rural rice market structure, including the functions of each intervening trader preceding rice distribution in urban centers. The study also assesses current functions of the agricultural farmer cooperative: an organization expected to enable the establishment of fair trade in the domestic rice market. The data come from interviews conducted with 120 farmers, 20 traders, and the survey of the overall cooperative associations in two prefectures and main rice suppliers of the capital city. The analysis reveals that farmers were often...
Tipo: Conference Paper or Presentation Palavras-chave: Cooperatives; Madagascar; Markets; Rice; Agricultural and Food Policy; Consumer/Household Economics; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Institutional and Behavioral Economics; International Relations/Trade; Marketing; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods.
Ano: 2008 URL: http://purl.umn.edu/52005
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Analysis of blast resistance gene composition in Malagasy rice (Oryza sativa L.) cultivars, landraces and exotic lines International Rice Research Institute
Dodelys, Andriantsimialona R..
x, 59 leaves : ill. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Blast disease; Rice; Varieties; Disease resistance; Cultivars; Madagascar.
Ano: 1998 URL: http://hdl.handle.net/123456789/553
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Biologie et pêche traditionnelle des crevettes pénéides dans l'embouchure d'un fleuve en milieur semi-aride (sud-ouest de Madagascar) ArchiMer
Laroche, Jean; Benoely,; Siaviri, A.
Traditional fishing using beach seines was studied over a period of one year at the mouth of the Onilahy river. The catches/efforts were recorded on a daily basis, biological sampling and the measurement of hydrological parameters being carried out twice a month. The moderate variations of salinity and temperature (14 < salinity < 35; 25 degrees C < temperature < 30 degrees C) which were observed in the estuary can be explained by the semiarid climate of the area. Four species of penaeid shrimps are to be found on the Onilahy: Metapenaeus monoceros, Panaeus indicus, Penaeus monodon and Penaeus japonicus, which were mainly caught at the subadult/adult stage with a Carapace length between 10 and 50 mm. The presence of these important sizes at the...
Tipo: Text Palavras-chave: Pêche; Estuaire; Dynamique population; Croissance; Taille corporelle; Cycle évolutif; Zone semi aride; Madagascar; Penaeus japonicus; Penaeus monodon; Penaeus indicus; Metapenaeus monoceros; Rivière Onilahy; Afrique; Milieu saumâtre; Macrura; Decapoda; Crustacea; Arthropoda; Invertebrata; Fishing; Estuaries; Population dynamics; Growth; Body size; Life history; Semi arid zone; Malagasy Republic; Penaeus japonicus; Penaeus monodon; Penaeus indicus; Africa; Brackish water environment; Macrura; Decapoda; Crustacea; Arthropoda; Invertebrata.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/00097/20828/42822.pdf
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Characteristics of selected soils of Madagascar and influence of water regime on the chemical changes and growth of rice on a flooded iron toxic soil International Rice Research Institute
Razafinjara, Aime Lala.
183 l. : ill. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Soil; Soil properties; Soil water regimes; Soil chemistry; Plant growth; Flooded conditions; Madagascar.
Ano: 1990 URL: http://hdl.handle.net/123456789/998
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Collocherides bleptus n. sp. (Copepoda: Siphonostomatoida) associated with an intertidal ophiuroid in Madagascar Naturalis
Humes, Arthur G..
Collocherides bleptus n. sp. is associated with a brittle star, Macrophiothrix sp., at Nosy Bé, in northwestern Madagascar. The new copepod differs from its two congeners by its larger size and by having leg 5 in the female with an elongate distal segment bearing only two setae.
Tipo: Article / Letter to the editor Palavras-chave: Copepoda; Siphonostomatoida; Madagascar; Ophiuroid; Associate; Collocherides.
Ano: 1993 URL: http://www.repository.naturalis.nl/record/504649
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Comparative tadpole morphology in three species of frogs of the genus Spinomantis (Amphibia: Mantellidae) Naturalis
Vejarano, S.; Thomas, M.; Vences, M..
We describe the tadpoles of three species of Malagasy frogs, classified in the genus Spinomantis, based on specimens identified by DNA barcoding. The tadpole of Spinomantis aglavei is a typical Orton type IV larva. The oral disc is not emarginated laterally, but has two mid-ventral folds and a labial tooth row formula of 3(2- 3)/2(1). The tadpole of S. phantasticus is similar, the oral disc being laterally emarginated and having one medial fold; LTRF is 3/3(1). A third species, S. cf. fimbriatus is also similar to the other two species; the oral disc is not laterally emarginated but has three medial folds and LTRF is 3(2-3)/3(1). One shared character is a median fold or emargination in the lower part of the oral disc, although the shape of this fold is...
Tipo: Article / Letter to the editor Palavras-chave: Anura; Spinomantis aglavei; Spinomantis phantasticus; Spinomantis fi mbriatus; Madagascar; Systematics; DNA barcoding; 42.82.
Ano: 2006 URL: http://www.repository.naturalis.nl/record/210775
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Composition and antimicrobial activity of essential oils of Cinnamosma fragrans ArchiMer
Randrianarivelo, Roger; Sarter, Sarnira; Odoux, Eric; Brat, Pierre; Lebrun, Marc; Romestand, Bernard; Menut, Chantal; Andrianoelisoa, Hanitriniaina Sahondra; Raherimandimby, Marson; Danthu, Pascal.
Essential oil samples of Cinnamosma fragrans from two regions in Madagascar, Tsaramandroso (38 samples) and Mariarano (30 samples), were analysed by GC/MS. Fifty-seven components were identified, accounting from 88.3% to 99.4% of the oils' composition. The major components were linalool (72.5 +/- 23.3%) in Tsaramandroso and 1,8-cineole (47.3 +/- 10.2%) in Mariarano. Samples B8 (95.8% linalool) from Tsaramandroso and B143 (71.6% 1,8-cineole) from Mariarano containing the highest proportions of the two main components identified, were selected to determine antimicrobial activities against 10 microbial strains. Bacillus subtilis and Staphylococcus aureus were the most sensitive strains to both oils. Minimum inhibitory concentration (MIC) values were lower for...
Tipo: Text Palavras-chave: Madagascar; 1.8 Cineole; Linalool; Antimicrobial activity; Essential oil; Cinnamosma fragrans.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6242.pdf
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Description of 11 new Astiella (Spermacoceae, Rubiaceae) species endemic to Madagascar Naturalis
Groeninckx, I.; Janssens, S.; Smets, E.; Verstraete, B..
Astiella is an herbaceous genus endemic to Madagascar, originally described with a single species A. delicatula Jovet. Molecular and morphological evidence place it in the tribe Spermacoceae s. lat. of Rubiaceae. During herbarium studies and fieldwork in Madagascar, 11 new Astiella species were identified and these are described here: A. antongilensis Groeninckx sp. nov., A. antsalovansis Groeninckx sp. nov., A. confusa Groeninckx sp. nov., A. deblockiae Groeninckx sp. nov., A. desseinii Groeninckx sp. nov., A. homolleae Groeninckx sp. nov., A. latifolia Groeninckx sp. nov., A. longifimbria Groeninckx sp. nov., A. perrieri Groeninckx sp. nov., A. pulla Groeninckx sp. nov., and A. tsaratanensis Groeninckx sp. nov. The genus Astiella now holds 12 species in...
Tipo: Article / Letter to the editor Palavras-chave: Astiella; Endemism; Madagascar; Rubiaceae; Spermacoceae s. lat..
Ano: 2017 URL: http://www.repository.naturalis.nl/record/629097
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Determinants of Repayment Performance in Credit Groups: The Role of Program Design, Intra-group Risk Pooling, and Social Cohesion in Madagascar AgEcon
Zeller, Manfred.
Group lending has received much attention in recent years because of its perceived potential in providing financial services to poor households that lack traditional collateral. The analysis in this paper focuses on the effects of program design, community and group characteristics on the repayment performance of groups, using a data set on groups from six different lending programs in Madagascar. The results show that socially cohesive groups pool risks by diversifying the members’ asset portfolio so that their repayment performance is improved even in communities with high-risk exposure.
Tipo: Working or Discussion Paper Palavras-chave: Community Participation; Madagascar; Credit; Financial Economics.
Ano: 1996 URL: http://purl.umn.edu/97299
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Development of the shrimp industry in the Western Indian Ocean - a holistic approach of vertical integration, from domestication and biosecurity to product certification ArchiMer
Le Groumellec, Marc; Rigolet, Vincent; Panchayuthapani, Duraisamy; Vandeputte, Marc; Rao, Vemulapalli Manavendra.
The shrimp farming industry in the western Indian Ocean started with Aqualma’s project in 1989, and now several companies farm shrimp in the Mozambique Channel. Despite the remoteness of these projects and their high investment and operating costs, they compete in the global marketplace by efficiently producing high value quality products. To address sustainability and biosecurity issues, Aqualma developed domesticated specific pathogenfree (SPF) broodstock of Penaeus monodon from western Indian Ocean stocks, which have been its exclusive source of post-larvae since 2003. Specific molecular diagnostic tools have been developed for each endemic pathogen detected since 1996, and these are used for routine surveillance of Aqualma’s shrimp stocks along with...
Tipo: Text Palavras-chave: Shrimp; Madagascar; Domestication; Biosecurity; Certification.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00099/20980/18604.pdf
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Diversity, external morphology and ‘reverse taxonomy’ in the specialized tadpoles of Malagasy river bank frogs of the subgenus Ochthomantis (genus Mantidactylus) Naturalis
Randrianiaina, R.-D.; Strauß, A.; Glos, J.; Glaw, F.; Vences, M..
We provide detailed morphological descriptions of the tadpoles of Malagasy river bank frogs of the subgenera Ochthomantis and Maitsomantis (genus Mantidactylus, family Mantellidae), and data on relative abundance and habitat preferences of Ochthomantis species from Ranomafana National Park in southeastern Madagascar. Our study includes the tadpoles of six described and four undescribed candidate species. Eight of these larvae were previously unknown. Tadpoles were identified by DNA barcoding. Due to the very rudimentary taxonomic knowledge on Ochthomantis, we followed a ‘reverse taxonomy’ approach in which adult classification was to a great part determined on the basis of larval differences. By this procedure we even identified one candidate species whose...
Tipo: Article / Letter to the editor Palavras-chave: Amphibia; Mantellidae; Madagascar; Tadpole morphology; DNA barcoding; 42.82.
Ano: 2011 URL: http://www.repository.naturalis.nl/record/369710
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First record of Calappoidea and Dromioidea from the Upper Cretaceous (Upper Maastrichtian) of NW Madagascar Naturalis
Garassino, Alessandro; Pasini, Giovanni.
The crustaceans from the marine Berivotra Formation, dated as late Cretaceous, from 50 km south of Mahajanga, Madagascar contains macrurans, brachyurans and thalassinideans. Two brachyuran families, Raninidae and Dynomenidae, were previously identified with the genera Notopocorystes, Caloxanthus, Titanocarcinus, Xanthosia, and Dromiopsis. Fragmentary material now also allows the recognition of Dromioidea, Calappoidea and Xanthoidea.
Tipo: Article / Letter to the editor Palavras-chave: Crustacea; Decapoda; Cretaceous; Madagascar.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/534294
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Hydraires semi-profonds de Madagascar, (Coelenterata Hydrozoa), étude systematique et écologique Naturalis
Gravier-Bonnet, N..
The present collection was made on the south and west coasts of Madagascar between 90 en 465 meters depth and includes 17 species of calyptoblastic hydroids, belonging to six families: Campanulinidae, Lafoeidae, Campanulariidae, Syntheciidae, Sertulariidae and Plumulariidae. Twelve are recorded for the first time from Madagascar, while three of these are new for the Indian Ocean and one is described as new (Tulpa costata). Endemic species represent half of the collection and are numerically more important than cosmopolitan, tropical-indopacific, and southern species. A comparative study of bathymetrical characteristics of species from Madagascar and around the world allows to distinguish three groups of species: deepsea species, which have a very wide...
Tipo: Article / Letter to the editor Palavras-chave: Coelenterata; Hydrozoa; Madagascar; New species; Revision; Halicornaria ferlusi Billard; Temporary epizoism; 42.72.
Ano: 1979 URL: http://www.repository.naturalis.nl/record/323945
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Indian Ocean Mapouria species transferred to Psychotria (Rubiaceae–Psychotrieae) Naturalis
Davis, A.P.; Govaerts, R.; Briggs, M..
Mapouria Aubl. is a synonym of Psychotria L. In Madagascar and the Comoros there are 67 species of Mapouria that fall within the circumscription of Psychotria and correspondingly 64 species (67 taxa) require transfer to Psychotria. Thirty-seven new combinations and 30 new names are proposed; five lectotypes are designated.
Tipo: Article / Letter to the editor Palavras-chave: Psychotrieae; Mapouria; Psychotria; Comoros; Madagascar.
Ano: 2007 URL: http://www.repository.naturalis.nl/record/524768
Registros recuperados: 42
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