Search Results - "latitud"

Ekonomiskt optimalt skogsbruk : analys av enskild ägd skog med klustrade Riksskogstaxeringsytor by Berggren, Petter

An early study on the potential of landscape and geographical variables to reduce bias in forest forecast planning in Ireland by Judd, Charles Socrates

“…The predictors consisted of landscape and geographic variables; namely elevation, slope, aspect, country segment, distance from coast, latitude, soil type and roughness. The results showed that over-estimation is the most common form of forecast bias with the tactical forecast models being the most accurate using the predictor variables, Elevation, Roughness and Soil Type. …”
Get full text

The effects of forest age, forest edge and landscape factors on the occupancy and cover of the Micarea globulosella lichen in a Swedish boreal forest by Halfmann, Julian K.

“…The impacts of other landscape factors on M. globulosella, including altitude and latitude, were also tested. Most profoundly, M. globulosella was found in young forest stands. …”
Get full text

Forest estimates derived from airborne laser scanning data in southern Sweden : a comparison of regional and local model calibration by Singhania Sousa, Monica

“…In a second stage of the evaluation, explanatory dummy variables related to geographic position of the forest such as if the forest were located close to the coast, and a variable created by the combination of altitude and latitude were tested. With the dummy variables, NFI plots from the buffer zones of 20 and 50 km around the coast, a slightly lower RMSE for D and BA were obtained. …”

Efecto del tiempo de uso en las condiciones físicas del suelo andino en el departamento de Nariño, Colombia by Volveras Mambuscay, B, Amézquita Collazos, Edgar, Tafur, H

“…Using a rainfall simulator (CIAT), changes in the soil loss and some physical properties associated to water movement by effect of the type of use of the soil through the time of use in the following treatments were evaluated: Non intervened soil with 25% slope (control), a pasture for 25 years and 25% slope and cropping wheat-corn (w-c) of 25, 45 and 70 years of use, each one of these last, with 12% and 25% slope in a Inceptisol of the area of reconversión of the wheat crop of Nariño, Colombia (longitude 75º 14´ west, latitude 0.5º 10´ north, 2710 masl, 795 HR, 12ºC). …”
Get full text

Environment, management, and genetic contributions to maize kernel hardness and grain yield by Cerrudo, Aní­bal Alejandro, Martinez, Dionisio Roberto, Izquierdo, Natalia Gabriela, Cirilo, Alfredo Gabriel, Laserna, Paula, Reinoso, Lucio, Valentinuz, Oscar Rodolfo, Balbi, Celsa Noemí, Andrade, Fernando Hector

“…Delayed planting consistently reduced kernel hardness at high-latitude locations. Potential photosynthetic source during maize reproductive period explained 37% of the variation in kernel coarse-to-fine ratio. …”
Get full text
Get full text
Get full text
Get full text

Avibacterium paragallinarum, the Causative Agent of Infectious Coryza: A Comprehensive Review by El-Gazzar, Mohamed, Gallardo, Rodrigo, Bragg, Robert, Hashish, Amro, Hui-ling, Sun, Davison, Sherrill, Feberwee, Anneke, Huberman, Yosef Daniel, Skein, H.T., Coertzen, Azil, Kelly, Donna, Soriano-Vargas, Edgardo, Morales-Erasto, Vladimir, Da Silva, Ana, Meng-Jiao, Guo, Ladman, Brian, Dijkman, Remco, Ghanem, Mostafa

“…The second section focuses on specifics of the latest IC outbreaks in commercial poultry in northern latitudes, particularly in Europe and in North America. …”
Get full text
Get full text
Get full text

Chromosome studies in southern species of Mimosa (Fabaceae, Mimosoideae) and their taxonomic and evolutionary inferences by Morales, Matias, Wulff, Arturo Federico, Fortunato, Renee Hersilia, Poggio, Lidia

“…Polyploidy is very frequent, ca. 56 % of the total of the studied species here are polyploid, confirming that polyploids are more frequent at higher latitudes. The most common ploidy levels found are 2x and 4x, but some species studied exhibit 6x and 8x. …”
Get full text
Get full text
Get full text

Inter-Annual and Seasonal Variation of ANPP and Leaf Nutrient Concentration in Cold-Temperate Wetlands of Tierra del Fuego by Cipriotti, Pablo Ariel, Collantes, Marta Beatriz, Rauber, Ruth Bibiana, Braun, Karen, Escartin, Celina Andrea

“…Our results represent valuable information to design sustainable management strategies for wetlands according to their spatial and temporal variation, and to define a baseline of vegetation functioning to assess the impact of climate change in high-latitude southern ecosystems.…”
Get full text
Get full text
Get full text

Genetic variation and heteroplasmy of Varroa destructor inferred from ND4 mtDNA sequences by Muntaabski, Irina, Russo, Romina Maria, Liendo, María Clara, Palacio, María Alejandra, Cladera, Jorge Luis, Lanzavecchia, Silvia Beatriz, Scannapieco, Alejandra Carla

“…Furthermore, two sub-haplotypes (KArg-N1 and KArg-N2) were identified from a variation in ND4 sequences and the frequency of these sub-haplotypes was found to significantly correlate with geographical latitude. The occurrence of site heteroplasmy was also evident for this gene. …”
Get full text
Get full text
Get full text

Terminal Crossbreeding of Murciano-Granadina Goats to Boer Bucks: Effects on Reproductive Performance of Goats and Growth of Kids in Artificial Rearing by Pérez-Baena, Ion, Jarque-Durán, Marta, Gómez, Ernesto A., Díaz, José-Ramón, Peris-Ribera, Cristòfol

“…However, the reproductive performance rates of MG goats mated with Boer bucks were slightly worse (pregnancy rate: 78.5% vs. 86.6%, p < 0.05; kidding rate: 62.0% vs. 75.7%; p < 0.01; prolificacy: 1.9 vs. 2.1 kids/parturition), especially when the matings took place in non-breeding season (experiments conducted at latitude 38–39° N). It is concluded that the terminal crossbreeding of MG goats to Boer bucks (those not used to produce replacement kids) could be an interesting option for ethical goat production.…”
Get full text
Get full text

A comparison of methods to assess site index in young Norway spruce stands by Jakobsen , Niels Aagaard

“…For SICM to be used confidently on younger stands on a regular basis it is necessary to conduct a larger field study that covers a whole range of Swedish latitudes across the entire spectrum of spruce site types.…”
Get full text

Tropical peatlands under siege: The need for evidence-based policies and strategies by Murdiyarso, D., Lilleskov, E.A., Kolka, R.

“…Much has been learned about high latitude, northern hemisphere peatlands but less is known about tropical peatlands. …”
Get full text

What and who has determined adoption? A study on improved forage technologies in Colombia from an Agricultural Innovation System (AIS) perspective by Enciso, Karen, Triana Ángel, Natalia, Díaz, Manuel Francisco, Burkart, Stefan

“…Thirdly, released technological packages remain incomplete and impede rising adoption rates, mainly due to both Colombia’s low-latitude (and its restrictions for national seed production) and ineffective processes of training and support aimed at local livestock producers. …”
Get full text

Impacts of a decadal drainage disturbance on surface–atmosphere fluxes of carbon dioxide in a permafrost ecosystem by Kittler, Fanny, Burjack, Ina, Corradi, Chiara A.R., Heimann, Martin, Kolle, Olaf, Merbold, Lutz, Zimov, Nikita, Zimov, Sergey, Göckede, Mathias

“…Hydrologic conditions are a major controlling factor for carbon exchange processes in high-latitude ecosystems. The presence or absence of water-logged conditions can lead to significant shifts in ecosystem structure and carbon cycle processes. …”
Get full text

Spatial variation in fertilizer prices in Sub-Saharan Africa by Bonilla Cedrez, Camila, Chamberlin, Jordan, Guo, Zhe, Hijmans, Robert J.

“…We show that in many countries this variation can be predicted for unsampled locations by fitting models of prices as a function of longitude, latitude, and additional predictor variables that capture aspects of market access, demand and environmental conditions. …”
Get full text

Response of maiden ewes to the ‘ram effect’ is a robust management practice and a candidate selection trait for enhanced reproductive performance in drylands by Ben Salem, Imene, Rouatbi, Mariem, Mlika, Mariem, Getachew, Tesfaye, Govind, Ajit, Haile, Aynalem, Raggem, Mohamed, Lahsoumi, Ridha, Rekik, Mourad

“…Management of reproduction that relies on naturally based solutions is extremely important to counter the negative perception around hormone-based interventions. In Mediterranean latitudes and wider regions of non-tropical drylands, sheep do not normally ovulate during spring but exposure to a ram can induce oestrus and ovulation. …”
Get full text

Sahelian rangeland response to changes in rainfall over two decades in the Gourma region, Mali by Hiernaux, Pierre H.Y., Mougin, E., Diarra, L., Soumaguel, N., Lavenu, F., Tracol, Y., Diawara, M.

“…Following rainfall variability, inter-annual variability of herbaceous yield increases as climate gets dryer with latitudes at least on the sandy soils sites. Local redistribution of rainfall explains the high patchiness of herbaceous vegetation, especially on shallow soils. …”
Get full text

Introduction and evaluation of improved varieties of Dioscorea rotundata, and D. cayenensis with high micronutrient content in Cameroon by Njukwe, E., Amah, D., Ndango, R., Tenkouano, A., Asiedu, Robert

“…In 2004, this scheme was extended to Cameroon, whereby fifteen D. rotundata and two D. cayenensis varieties were introduced for evaluation and selection at Mbalmayo (3o 25N latitude, 11o 28E longitude and 640 masl). They were planted in two blocks of equal number of seeds per variety spaced 1 x 1m, 1 x 0.5m and 1 x 0.25m for ware yams, seed yams and seeds for seed yams respectively. …”
Get full text

Itinerario de cultivo y costes de producción del estátice en el sureste español by Fernández-Zamudio, María A., Roca, Dolors, Bartual, Julián

“…La floricultura española sigue un lento retroceso en las últimas décadas, ya que la globalización de los mercados ha reducido la rentabilidad de las explotaciones nacionales y es imposible competir vía costes con las producciones procedentes de otras latitudes. Sin embargo el consumo de especies ornamentales en España ha ido creciendo paulatinamente, por lo que cada vez hay mayor dependencia de las importaciones. …”
Get full text
Get full text