Resultados de búsqueda - "altitud"
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Escaneo científico sobre cacaos criollos
Publicado 2025“…Utilizando Bibliometrix® y VOSviewer®, se identificaron tendencias de investigación que destacan la relevancia de los criollos por su perfil organoléptico superior, la presencia de metabolitos aromáticos diferenciados, su adaptación ecofisiológica a condiciones de estrés y la influencia de factores como terroir (impacto del entorno específico del suelo, clima, altitud, etc.) y manejo postcosecha en la calidad final. …”
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Assessment of physiological adaptation of indigenous and crossbred cattle to hypoxic environment in Ethiopia
Publicado 2011“…High altitude pulmonary hypertension is common in cattle at high altitude areas. …”
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Study of coccidiosis of scavenging indigenous chickens in central Ethiopia
Publicado 2004“…There was a significant altitude difference ( 2 = 14.7, p<0.001) in coccidiosis prevalence: 42.2% in chickens from highland region followed by 21.5% in mid-altitude and 13.1% in low-altitude areas. …”
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Genotypic variability for cassava tuberous root development in two lowaltitude and midaltitude savanna sites of Nigeria
Publicado 2002“…Some of the genotypes identified as adapted to mid-altitudes with seasonally low temperatures may be useful as parental sources in breeding programs targeted for mid or high altitudes.…”
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Tree diversity and biomass carbon stock analysis along altitudinal gradients in coffee-based agroforestry system of Western Ethiopia
Publicado 2022“…Biomass carbon stocks and tree diversity were quantified across altitudinal gradients. In the middle altitude, there were more woody species (28) than in the top altitude, where there were only a few species (16). …”
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Sheep germ plasm in Ethiopia
Publicado 1983“…These four breeds have evolved in different ecological zones, the Adal and the Somali Blackhead breeds in the lowland up to an altitude of 1100m, the Horro in the middle altitude from 1400 to 2000m, and the Menz in altitudes higher than 2500 m. …”
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Altitudinal filtering of large-tree species explains above-ground biomass variation in an Atlantic Central African rain forest
Publicado 2017“…We analysed variation over altitude in two specific functional traits, the potential maximum tree height and the wood density. …”
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Whole-genome sequencing identifies genetic diversity and adaptive signatures of hypoxia and ultraviolet radiation in Chinese chickens
Publicado 2026“…China hosts diverse indigenous chicken populations that have adapted to various environmental conditions, including high-altitude with hypoxic and ultraviolet radiation stress. …”
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Height-diameter allometry and above ground biomass in tropical montane forests: insights from the Albertine Rift in Africa
Publicado 2017“…While it is well-known that some aspects of forest structure change with altitude, little is known on the effects of altitude on above ground biomass (AGB), particularly with regard to changing height-diameter allometry. …”
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Plant parasitic nematodes associated with banana and plantain in eastern and western Democratic Republic of Congo
Publicado 2013“…The occurrence and abundance of the nematode species was influenced by altitude: R. similis declined at elevations above 1300 m; P. goodeyi declined at elevations below 1200 m; H. multicinctus and Meloidogyne spp. were found everywhere with higher but non-dominant densities at lower altitudes; Pratylenchus spp. was restricted to lower altitudes; while H. dihystera and R. reniformis were scattered at both low and high altitudes. …”
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Epidemiology of endoparasites of small ruminants in sub-Saharan Africa
Publicado 1993“…The high transmission and high occurence of Haemonchus contortus, Oesophagostomum columbianum, Trichostrongylus sp., Cooperia sp. strongyloides papilosus and Trichuris ovis in the wet season make them more important in the humid, sub-humid and mid-altitude highlands of Africa. Trichostrongylus colubriformis and the lungworm Dictyocaulus filaria are also important in the high altitudes of Ethiopia, although H. contortus and others also exist. …”
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Selection of Different Trees/Shrubs Species for Rehabilitation of Degraded Lands in Wag-Lasta Area, Northeastern Ethiopia
Publicado 2020“…The experiment was conducted in randomized block design with three replications in highland, mid altitude, and lowland sites. For total experimental setup 21 (seven for lowland, eight for mid altitude and six for highland) tree and shrub species were used. …”
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Prevalence and risk factors of epizootic lymphangitis in cart pulling horses and mules in Central and South Gondar zones, Amhara region, Ethiopia
Publicado 2022“…Two towns, one high altitude and one mid altitude, from each of the two zones were included for the study. …”
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Distribution, relative importance and effect of lepidopterous borers on maize yields in the forest zone and midaltitude of Cameroon
Publicado 2001“…In the forest zone, ear and stem damage significantly reduced ear weight, whereas in the mid-altitude only stem tunneling was significant.…”
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Impact of Environment and Genotype-by-Environment Interaction on Functional Properties of Amylose-Free and Wildtype Cassava Starches
Publicado 2018“…Both experiments clearly indicate that PV is positively correlated with altitude above sea level where cassava is grown. Altitude above sea level influenced starch granule size: the higher the altitude the larger the average granule size. …”
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Survey on incidence and severity of Stenocarpella macrospora (Earle) leaf blight of maize in the midaltitude zone of Nigeria
Publicado 1999“…Fewer symptoms were observed at altitudes below 700m. There was no significant correlation between cropping system and incidence or severity.…”
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The effect of weather regimes on the leaf area development and dry matter production in cassava
Publicado 2000“…Twelve cassava (Manihot esculenta crantz) genotypes were grown at two field sites in Nigeria representing lowland and mid-altitude agroecological zones from 1994 to 1996 (Ibadan and Jos). …”
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Redistribution of trace elements upon the weathering of volcanic ash soils in Costa Rica
Publicado 2014Enlace del recurso
Monografía -
Whole-genome sequence data suggests environmental adaptation of Ethiopian sheep populations
Publicado 2021“…One of the strongest altitude-related signals was for a collagen gene, consistent with previous studies of high-altitude adaptation. …”
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Decline in hunter offtake of blue duikers in Bioko Island, Equatorial Guinea
Publicado 2016“…The number of duikers shot or snared across the study period, significantly declined within the mid‐altitude range (901–1500 m). There were no significant drops in CH or CPUE at low or high altitudes for snared animals. …”
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Journal Article