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| Registros recuperados: 15 | |
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| Batista,Natália de Almeida; Bianchini,Edmilson; Carvalho,Eloisa de Souza; Pimenta,José Antonio. |
| We aimed to answer the following questions related to the architecture of individuals 0.5-3.0 m in height belonging to understory or canopy/emergent layer tree species: "Is there a difference between individuals belonging to different strata developing in environments with the same light intensity, in terms of their architecture?"; and "Given the same light intensity, do understory species exhibit less crown plasticity than do canopy/emergent layer species?" Thirteen architectural variables were evaluated in 80 individuals per species. We found that understory species showed greater increases in stem thickness and leaf number, as well as wider, deeper crowns, longer branches, greater self-shading and less crown plasticity. Stems and crowns were more... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Resource allocation; Canopy; Allometric relationships; Understory. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000100004 |
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| Maia,Fabiano Rodrigo da; Malucelli,Tiago Simões; Varassin,Isabela Galarda. |
| The abundance and distribution of resources for pollinators modulate the reproduction of plants. This study attempted to determine whether and how the fruiting success of Tibouchina trichopoda flowers varies due to plant size, number of flowers produced, distance between individuals and cardinal orientation of the flowers. From July 2009 to February 2010, we conducted monthly evaluations of 21 plants in an area of regenerating forest within the Atlantic Forest biome, located near the municipality of Antonina, in southern Brazil. Floral density was monitored weekly. During the study period, the species bloomed twice: once during the cool, dry season, showing an extended flowering period with scattered flowering individuals; and once during the hot, rainy... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Resource allocation; Atlantic Rainforest; Plant-pollinator interactions; Population density; Floral longevity. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100014 |
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| Fernandes,G. Wilson; Duarte,Heitor Monteiro; Silveira,Fernando A. O.; Broetto,Fernando; Lüttge,Ulrich; Rennenberg,Heinz. |
| ABSTRACT Previous ecological studies of dioecious plant species have found that female plants preferentially occur at lower altitudes where there are typically better nutritional conditions, while male plants often occur in less favorable sites. We compared the ecophysiological performance of male and female plants in three populations of the dioecious Baccharis concinna, an endemic species of rupestrian grasslands of Serra do Cipó, in southeastern Brazil. We hypothesized that physiological differences between the sexes would explain the distribution patterns of the populations. Analyses of the tissue content of phosphorus (P), calcium (Ca), potassium (K) and sodium (Na), and carbon and nitrogen stable isotopes, were used to assess nutritional status and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Campos rupestres; Dioecy; Plant sex; Resource allocation; Rupestrian grasslands; Serra do Cipó. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200229 |
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| Kan, Iddo; Kimhi, Ayal; Lerman, Zvi. |
| This article examines the decision of farmers to sell part of their farm output on the market, using data from the Republic of Georgia. A two-level empirical model is used, in which endowments and resource allocation decisions determine farm output and non-farm income, and these in turn determine market participation. We found, as expected, that farm output affects market participation positively, while non-farm income affects it negatively. Landholdings have an indirect positive effect on market participation, through its positive effect on farm output. Education has a negative effect on market participation, mainly through its positive effect on non-farm income. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Commercialization; Market participation; Farm output; Non-farm income; Resource allocation; Farm Management; O12; P23; P25. |
| Ano: 2006 |
URL: http://purl.umn.edu/7179 |
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| Kan, Iddo; Kimhi, Ayal; Lerman, Zvi. |
| This article examines the decision of farmers to sell part of their farm output on the market, using data from the Republic of Georgia. A two-level empirical model is used, in which endowments and resource allocation decisions determine farm output and non-farm income, and these in turn determine market participation. We found, as expected, that farm output affects market participation positively, while non-farm income affects it negatively. Landholdings have an indirect positive effect on market participation, through its positive effect on farm output. Education has a negative effect on market participation, mainly through its positive effect on non-farm income. |
| Tipo: Journal Article |
Palavras-chave: Commercialization; Market participation; Farm output; Non-farm income; Resource allocation; Agricultural Finance; Farm Management. |
| Ano: 2006 |
URL: http://purl.umn.edu/112608 |
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| Haffray, Pierrick; Bugeon, Jerome; Pincent, Cedric; Chapuis, Herve; Mazeiraud, Emmanuel; Rossignol, Marie-noelle; Chatain, Beatrice; Vandeputte, Marc; Dupont-nivet, Mathilde. |
| Genetic parameters of production traits (growth, carcass yield, fillet yield) and bony tissues (head and vertebral axis) were estimated for large all-female rainbow trout Oncorhynchus mykiss reared in freshwater. Genetic parameters were estimated using REML at 16 months of age (1636 g) on 1962 DNA-assigned progenies from a partial factorial mating design with 60 dams and 100 sex-reversed sires. Most traits presented medium to high heritability (0.37 to 0.54). A high genetic correlation (r(A)=0.97) was found between fillet yield and headless gutted carcass yield (or HGCarc%). Due to its higher heritability and high genetic correlation with fillet yield, selection on HGCarc% should result in a 50% increase in selection efficiency on fillet yield by reducing... |
| Tipo: Text |
Palavras-chave: Resource allocation; Fillet yield; Head; Salmonids; Aquaculture; Selective breeding. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00109/22042/19801.pdf |
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| Romstad, Eirik. |
| The ongoing negotiations of the World Trade Organization (WTO) on agriculture has triggered an increased interest in the linkages between commodity production and public goods in agriculture. This paper takes a closer look at this issue. Particular emphasis is placed on production economics and policy design issues. Production is placed in a multi-product multi-input setting. The provision of public goods from agriculture is analyzed utilizing a principle-agent framework. Particular emphasis is placed on issues pertaining to incentive compatibility, informational aspects and the participation constraint. Public finance aspects of various policies are also addressed. Price supports are of particular interest as they are widely used in European... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Multi-product production; Public goods; Agriculture; Principal-agent models; Resource allocation; Policy; Agricultural and Food Policy. |
| Ano: 2002 |
URL: http://purl.umn.edu/24930 |
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| Li, Xian-song; Bai, Li; Zhang, Li-ming. |
| The status quo of resource allocation of agricultural science and technology R&D (research and development)both at home and abroad，including the amount and function of agricultural science and technology research funds, human resources in the resources of agricultural science and technology R&D , the efficiency of resource allocation of agricultural science and technology R&D, the management system of agricultural scientific innovation and the operation status of scientific funds, is analyzed. The problems in the current resource allocation of agricultural science and technology R&D are put forward. For instance, unreasonable resource allocation;, low efficiency, and low efficiency of the transformation of agricultural scientific results.... |
| Tipo: Journal Article |
Palavras-chave: Resource of agricultural science and technology R&D; Resource allocation; Efficiency; Mode; China; Agribusiness. |
| Ano: 2011 |
URL: http://purl.umn.edu/113423 |
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| Registros recuperados: 15 | |
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