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Registros recuperados: 199
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A conservation genetic study of Rafflesia speciosa (Rafflesiaceae): patterns of genetic diversity and differentiation within and between islands Naturalis
Pelser, P.B.; Nickrent, D.L.; Barcelona, J.F..
Rafflesia speciosa is a threatened endo-holoparasitic species. It has several populations in the Central Panay Mountain Range (CPMR) of Panay island and a single population on Negros Island. Because R. speciosa is the only Philippine species of the genus that is not endemic to an individual island, it is a suitable species for improving our understanding of the factors underlying the high island endemism of Philippine Rafflesia. For this purpose and to inform the conservation management of R. speciosa, patterns of genetic diversity and differentiation were studied using 15 microsatellite loci and samples from nine populations. None of these populations shows evidence of inbreeding and R. speciosa has similar levels of heterozygosity as generally observed...
Tipo: Article / Letter to the editor Palavras-chave: Microsatellites; Conservation; Negros; Panay; Philippines; Population genetics.
Ano: 2018 URL: http://www.repository.naturalis.nl/record/655789
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A method to identify and evaluate the legal and institutional framework for the management of water and land in Asia: the outcome of a study in Southeast Asia and the People’s Republic of China. AgEcon
Hannam, Ian.
Tipo: Report Palavras-chave: Water management; Land management; Legal aspects; Environmental policy; China; Laos; Bangladesh; Philippines; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/52970
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A new Celaenorrhinus species (Lepidoptera: Hesperiidae) from a remarkable locality in the Philippines Naturalis
Jong, R. de; Treadaway, C.G..
Celaenorrhinus halconis spec. nov. is described from Mt. Halcon in Mindoro (Philippines). The new species does not seem to be closely related to other Philippine Celaenorrhinus species, but bears resemblance to the endemic Javanese montane species C. toxopei de Jong, 1981.
Tipo: Article / Letter to the editor Palavras-chave: Lepidoptera; Hesperiidae; Celaenorrhinus; New species; Philippines; 42.75.
Ano: 1993 URL: http://www.repository.naturalis.nl/record/318264
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A new species of Cycas (Cycadaceae) from the Philippines Naturalis
Madulid, D.A.; Agoo, E.M.G..
A new species, Cycas zambalensis Madulid & Agoo, is described from an ultrabasic hilly grassland in Zambales, Luzon Island, Philippines.
Tipo: Article / Letter to the editor Palavras-chave: Cycas zambalensis; Philippines; Threatened Philippine plant.
Ano: 2005 URL: http://www.repository.naturalis.nl/record/524631
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A new species of Cymbasoma (Copepoda: Monstrilloida) from the Sulu Sea, Philippines Naturalis
Suárez-Morales, E..
A specimen of a monstrilloid copepod collected by the U.S. Fisheries Steamer “Albatross“ in the Sulu Sea, west coast of Mindanao, Philippines, and deposited in the U.S. National Museum of Natural History, was taxonomically restudied. The specimen had been originally identified as a male of Monstrilla serricornis Sars by C.B. Wilson. Reexamination revealed that the specimen represents a new species of the genus Cymbasoma, C. mcalicei. This species can be distinguished by its body proportions and body size, but mainly by the structure of the genital lappets, which have a serrated posterior margin unique in the genus. This is the seventh species of Cymbasoma reported from East or Southeast Asia.
Tipo: Article / Letter to the editor Palavras-chave: Crustacea; Copepoda; Monstrilloida; Philippines.
Ano: 1996 URL: http://www.repository.naturalis.nl/record/504750
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A new species of Vanoverberghia (Zingiberaceae) from the Philippines Naturalis
Ambida, J.H.B.; Alviar, A.M.A.; Co, P.S.A.; Concepcion, F.G.M.; Banag, C.I.; Docot, R.V.A..
A new species from the Philippines, Vanoverberghia rubrobracteata, is described and illustrated here. The new species is most similar to Vanoverberghia sepulchrei from which it differs in its leaves with oblong to narrowly elliptic lamina, unevenly truncate ligule apex, glabrous and red floral bracts, red calyx, white or pink corolla tube and lobes, and absence of spots on the style.
Tipo: Article / Letter to the editor Palavras-chave: Least concern; New species; Philippines; Vanoverberghia; Zingiberaceae.
Ano: 2018 URL: http://www.repository.naturalis.nl/record/662572
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A study on sustainability as related to performances of upper Pampanga and Magat River integrated irrigation systems in the Philippines International Rice Research Institute
Elkaduwa, Wipula Keerthi Bandara.
242 leaves : ill. Thesis (Ph.D.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Irrigation; Rice; Sediment deposition; Philippines; Upper Pampanga River Integrated Irrigation System; Magat River Integrated Irrigation System.
Ano: 1994 URL: http://hdl.handle.net/123456789/691
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A study on the physiologic races of Piricularia oryzae cav. in the Philippines International Rice Research Institute
Bandong, Jose M..
19, 10 leaves : tables (1 fold). Thesis (M.S.) -- University of the Philippines
Tipo: Thesis Palavras-chave: Rice; Plant pathogenic fungi; Magnaporthe fungi; Races; Philippines.
Ano: 1965 URL: http://hdl.handle.net/123456789/422
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Air Pollution Control Policy Options for Metro Manila AgEcon
Krupnick, Alan J.; Morgenstern, Richard D.; Fischer, Carolyn; Rolfe, Kevin; Logarta, Jose; Rufo, Bing.
The Asian Development Bank has sponsored research on market-based instruments for managing pollution in Metro Manila, Philippines, where air quality is seriously degraded. This report offers three policy options for reducing particulate emissions and their precursors. For stationary sources, we recommend an emissions fee that creates efficient financial incentives to reduce emissions while raising revenues for monitoring and enforcement activities. For mobile sources, we propose a pilot diesel retrofit program using a low-cost technology that is effective at existing 2,000 ppm sulfur content. Second, we recommend a charge on the sulfur content of diesel fuel to encourage meeting and surpassing the 500 ppm standard to allow for more advanced particulate...
Tipo: Working or Discussion Paper Palavras-chave: Air pollution; Emissions tax; Philippines; Particulates; Environmental Economics and Policy; Q25; Q01.
Ano: 2003 URL: http://purl.umn.edu/10612
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Amorphophallus adamsensis (Araceae), a new species from Ilocos Norte, Philippines Naturalis
Magtoto, L.M.; Mones, D.G.; Ballada, K.A.; Austria, C.M.; Dizon, R.M.; Alangui, W.V.; Reginaldo, A.A.; Galvan, W.M.; Dizon, K.T.; Hetterscheid, W.L.A..
There are ten known species of Amorphophallus in the Philippines, and an eleventh is herein described and named as Amorphophallus adamsensis. It resembles A. dactylifer and A. rostratus. Diagnostic characters of this new species are provided.
Tipo: Article / Letter to the editor Palavras-chave: Amorphophallus; Araceae; Ilocos Norte; New species; Philippines.
Ano: 2013 URL: http://www.repository.naturalis.nl/record/526027
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An empirical analysis of household labor supply in Philippine rice economies International Rice Research Institute
Lanzona, Leonardo A., Jr..
iii, 130 leaves : ill. Thesis (Ph.D.) -- University of the Philippines
Tipo: Thesis Palavras-chave: Rice; Labor; Philippines.
Ano: 1992 URL: http://hdl.handle.net/123456789/851
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Analysis of Technical Efficiency in a Rainfed Lowland Rice Environment in Central Luzon Philippines Using a Stochastic Frontier Production Function with a Heteroskedastic Error Structure AgEcon
Villano, Renato A.; Fleming, Euan M..
There have been many previous studies of technical inefficiency in rice production in the Philippines, but none has focused simultaneously on production risk and technical inefficiency at the farm level. In this study, we analyse technical inefficiency in a rainfed lowland rice environment in Central Luzon using a stochastic frontier production function with a heteroskedastic error structure.
Tipo: Working or Discussion Paper Palavras-chave: Heteroskedastic error structure; Philippines; Stochastic frontier production function; Technical; Crop Production/Industries; Productivity Analysis.
Ano: 2004 URL: http://purl.umn.edu/12906
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Analyzing Market Price Transmission, Government Intervention and Weather Shocks for Rice Market in the Philippines AgEcon
Jolejole-Foreman, Maria Christina; Mallory, Mindy L..
In the Philippines, where rice is considered the most important food crop, attempts to influence rice prices have been prevalent. The government, through National Food Authority (NFA) has sought to establish stocks and control imports to stabilize prices since its establishment in 1972 to support farm gate prices and reduce retail price of rice. But data shows divergence in retail prices and farm prices since mid 1960s. In this paper, we use vector autoregression (VAR) to analyze the movement of Philippine rice margins with government stocks and weather supply shocks to able to determine government effectiveness in actual times of market stress. Comparing VARs across regions, we are able to identify the regions in which price margins are significantly...
Tipo: Conference Paper or Presentation Palavras-chave: Vector-auto-regression; Price-Margin; Rice; Philippines; Policy; Agricultural and Food Policy; Demand and Price Analysis; Q11; Q13; Q18.
Ano: 2011 URL: http://purl.umn.edu/103163
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Another New Species of Rafflesia (Rafflesiaceae) from Luzon, Philippines: R. Leonardi Naturalis
Barcelona, J.F.; Pelser, P.B.; Cabutaje, E.M.; Bartolome, N.A..
A new species of Philippine Rafflesia is described. Rafflesia leonardi is the eighth species of Rafflesia described from the Philippines and the fourth species from Luzon Island. It most closely resembles R. lobata and R. manillana in perigone colour and wart ornamentations and in the wide aperture relative to diaphragm diameter. It is, however, different from both of these and other Philippine Rafflesia species in its flower size and disk that lacks or has rudimentary processes.
Tipo: Article / Letter to the editor Palavras-chave: Rafflesiaceae; Rafflesia; Philippines; Cagayan; Conservation; Taxonomy.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/525759
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Asthenocnemis linnaei, a new damselfly species from Dumaran island, Philippines (Odonata, Platycnemididae) Naturalis
Gassmann, D.; Hämäläinen, M..
Asthenocnemis linnaei spec. nov. is described from the Philippine island of Dumaran in the northeastern Palawan subregion. Notes on the taxonomic history of the genus Asthenocnemis are provided.
Tipo: Article / Letter to the editor Palavras-chave: Platycnemididae; Calicnemiinae; Asthenocnemis; New species; Dumaran Island; Palawan region; Philippines; 42.75.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/261762
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Athyrium erythropodum (Woodsiaceae, Pteridophyta), a new Philippine record Naturalis
Liu, Yea-Chen; Fraser-Jenkins, C.R.; Amoroso, V.B.; Chiou, Wen-Liang.
Athyrium erythropodum Hayata, which was previously thought to be endemic to Taiwan, has recently been discovered in the Philippines. This species has seldom been reported or described in the literature and if so has involved erroneous morphological description and diagnosis, which has caused confusion and partly erroneous taxonomic treatment. A detailed and revised diagnostic description of the species is provided in this report, along with illustrations showing its essential features.
Tipo: Article / Letter to the editor Palavras-chave: Athyrium erythropodum; Philippines; New record; Taxonomy.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/524461
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Bacteria associated with rice seed from Philippine farmers' fields International Rice Research Institute
Cottyn, Bart.
xv, 236 p. : ill. (some col.) Thesis (Ph.D.) -- University of Ghent
Tipo: Thesis Palavras-chave: Rice; Seeds; Seed-borne bacteria; Bacterial diseases of plants; Philippines.
Ano: 2002 URL: http://hdl.handle.net/123456789/446
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Bridging, Linking, and Bonding Social Capital in Collective Action: The Case of Kalahan Forest Reserve in the Philippines AgEcon
Dahal, Ganga Ram; Adhikari, Krishna Prasad.
This paper seeks to identify the factors which are responsible for successful management of natural resources when communities are given opportunities to manage those resources. Applying the social capital framework, it analyzes empirical data from the well known case of Kalahan Educational Foundation, the Philippines. The study confirms previous findings, which have emphasized the high level of cohesion and traditional norms among a homogeneous community of indigenous peoples (bonding social capital) as a success factor. This study further identifies that for effective management of collective action, mobilization of bridging and linking social capital are equally important as they do not only help mobilize external resources but, at times, also promote...
Tipo: Conference Paper or Presentation Palavras-chave: Kalahan PO; Philippines; Bonding; Bridging; Linking Social Capital; Governance; Collective Action; Labor and Human Capital; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/44352
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Challenging the win-win discourse on conservation and development: analyzing support for marine protected areas Ecology and Society
Chaigneau, Tomas; Environment and Sustainability Institute, University of Exeter; T.W.B.Chaigneau@exeter.ac.uk; Brown, Katrina; Environment and Sustainability Institute, University of Exeter; katrina.brown@exeter.ac.uk.
Conservation designations such as protected areas are increasing in numbers around the world, yet it is widely reported that many are failing to reach their objectives. They are frequently promoted as opportunities for win-win outcomes that can both protect biodiversity and lead to economic benefits for affected communities. This win-win view characterizes the dominant discourse surrounding many protected areas. Although this discourse and the arguments derived from it may lead to initial acceptance of conservation interventions, this study shows how it does not necessarily result in compliance and positive attitudes toward specific protected areas. Consequently, the discourse has important implications not just for making the case for protected area...
Tipo: Peer-Reviewed Reports Palavras-chave: Attitudes; Behavior; Compliance; Fisheries; Natural resource management; Philippines.
Ano: 2016
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Changes in rice farming in selected areas of Asia International Rice Research Institute
International Rice Research Institute.
377 p. : ill.
Tipo: Book Palavras-chave: Technological changes; Technology transfer; Innovation adoption; Farming systems; India; Indonesia; Malaysia; Philippines; Asia.
Ano: 1975 URL: http://hdl.handle.net/10269/216
Registros recuperados: 199
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