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| Registros recuperados: 249 | |
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| Santos, Merilene Maria dos; UFRPE; Azevedo, Marcílio de; UFRPE; Costa, Lígia Alexandrina Barros da; UFRPE; Silva Filho, Florisval Protásio da; UFRPE; Modesto, Elisa Cristina; UFRRJ; Lana, Ângela Maria Quintão; UFMG. |
| O objetivo deste experimento foi avaliar o comportamento de ovinos da raça Santa Inês, de diferentes pelagens em condições de pastejo. O delineamento experimental foi o inteiramente casualizado, com três cores de pelame (branco, castanho e preto), representando os tratamentos e 7 repetições, em um arranjo de parcela subdividida com cor do pelame na parcela e período na sub-parcela. As observações das variáveis analisadas foram realizadas em quatro períodos experimentais, onde cada período conteve três dias de observações comportamentais. Sendo as variáveis analisadas: tempo de pastejo, tempo de ruminação, tempo em ócio, outras atividades e bebendo água. As observações foram realizadas a cada 10 min., das 6 às 17h. Não houve interação significativa (p >... |
| Tipo: Pesquisa de campo |
Palavras-chave: 5.04.00.00-2 Adaptação; Clima; Conforto térmico; Etologia 5.04.01.00-9 Adaptation; Climate; Thermal comfort; Ethology. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/9974 |
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| Silva Filho, Florisval Protásio; Universidade Federal Rural de Pernambuco; Azevedo, Marcílio de; Universidade Federal Rural de Pernambuco; Costa, Lígia Alexandrina Barros da; Universidade Federal Rural de Pernambuco; Lana, Ângela Maria Quintão; Universidade Federal de Minas Gerais; Ferreira, Marcelo de Andrade; Universidade Federal Rural de Pernambuco; Batista, Ângela Maria Vieira; Universidade Federal Rural de Pernambuco. |
| This study evaluated the influence of coat color on the heat tolerance and performance of 21 Santa Inês lambs, non-pregnant, non-lactating, seven animals of each coat color: black, brown and white, with an average initial weight of 25.71, 24.85 and 25.00 kg, for white, brown and black animals, respectively, and 12 months of age. The study was conducted during summer in the agreste region of Pernambuco State, Brazil. Twenty-one sheeps were assigned to a completely randomized design with three treatments and seven replicates. The heat tolerance index and the animal performance were evaluated once a week for eight weeks. White sheep were slightly superior in heat tolerance to brown and black sheep, 88.3, 85.5 and 86.6 respectively, but this was not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adaptation; Bioclimatology; Climate; Heat stress. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18466 |
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| ARRUDA,DANIEL M.; FERREIRA-JUNIOR,WALNIR G.; DUQUE-BRASIL,REINALDO; SCHAEFER,CARLOS E.R.. |
| The Deciduous Complex that occurs in northern Minas Gerais State, Brazil, raises questions about the floristic affinities of these formations in relation to neighboring phytogeographical domains. Little is known about the identity of the seasonal forest formations that comprise this complex, or about its relationships to abiotic components, such as soils, topography and climate. This study aimed to recognize the patterns of floristic similarity of all studied fragments of dry forest of northern Minas Gerais with soil and climate attributes, based on the available database. Cluster analysis indicated the existence of two floristic groups that had clear associations with either the Koppen's BSh (semi-arid) or Aw (seasonal tropical) climates. Likewise, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Climate; Deciduous seasonal forest; Ecotone; Phytogeography; Soil. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200623 |
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| Godoy,Mario D.P.; Lacerda,Luiz D. de. |
| Mangroves function as a natural coastline protection for erosion and inundation, providing important environmental services. Due to their geographical distribution at the continent-ocean interface, the mangrove habitat may suffer heavy impacts from global climate change, maximized by local human activities occurring in a given coastal region. This review analyzed the literature published over the last 25 years, on the documented response of mangroves to environmental change caused by global climate change, taking into consideration 104 case studies and predictive modeling, worldwide. Most studies appeared after the year 2000, as a response to the 1997 IPCC report. Although many reports showed that the world's mangrove area is decreasing due to direct... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Climate; Mangrove; Limits; Migration. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200651 |
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| SENNA,MÔNICA C.A.; COSTA,MARCOS H.; DAVIDSON,ERIC A.; NOBRE,CARLOS A.. |
| Amazon tropical forests are being replaced by pasturelands and croplands, but they sometimes revert to regrowth forest when abandoned after a period of agricultural use. Research suggests that this secondary regrowth is limited by climate and nutrient availability and, using a coupled biosphere-atmosphere model, we investigated patterns in the regrowth of the Amazon rainforest after a full deforestation event, considering different types of nutrient stress. We found that, over a 50 year regrowth period, the reduction of precipitation caused by large-scale deforestation was not sufficient to prevent secondary forest regrowth, but this decrease in precipitation combined with nutrient limitation, due to logging and frequent fires, did indeed prevent forest... |
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Palavras-chave: Amazon; Climate; Deforestation; Ecosystem model; Net primary production; Savannization. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200621 |
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| Mattos,I.M. de; Souza,J.; Soares,A.E.E.. |
| ABSTRACT Pollination services performed by bees are essential for the reproduction of a great part of flowering plants. The pollen collected by Apis mellifera while performing pollination (bee pollen), has been incorporated into the human diet for its favorable nutritional components. Around 1,500 tons of bee pollen are produced annually worldwide, especially in Spain, China, Australia, Argentina, and Brazil. Despite the importance of bee pollen within apiculture, little is known about the effects of climate variations on bee pollen collection and production. We monitored the pollen collection performance of 24 different honey bee colonies in different climate conditions within a period of one year. We then analyzed the statistical interaction among the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Africanized honey bees; Bee pollen; Climate; Foraging; Pollination. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000401301 |
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| Pessoa,G.A; Navarro,R.B; Rauber,L.P; Brass,K.E; Silva,C.A.M; Rubin,M.I.B. |
| Temperature and rainfall were analyzed daily during six years to evaluate their influence on in vitro production of bovine embryos. Weekly replications (n=480) were performed on 14,778 ovaries collected at slaughterhouses. Cumulus oocyte complexes (n=19,180) were fertilized with a pool of Bos taurus taurus semen in one incubator with 5% CO2. Presumable zygotes were cultured in gasified plastic bags with 5% CO2, 5% O2, and 90% N2. In the first year, cleavage and embryo yield were 60.3% and 15.6%, respectively, being lower (P<0.05) than in the following years. Average cleavage rates were always lower in winter (P<0.0001), thus producing less embryos. Winter climatic conditions had a negative influence on in vitro production, when cleavage and embryo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cow; Oocytes; Embryo; Climate; In vitro prodution. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352010000600013 |
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| Mattar,Gabriel Stefanini; Modesto,Lenon Romano; Hernandes,José Luiz; Tecchio,Marco Antonio; Moura,Mara Fernandes. |
| ABSTRACT This study evaluated the cycle duration, physicochemical characteristics of fruits and climatic adaptation of the ‘SR 501-17’ hybrid grape grafted on four rootstocks for the production of white wine. We tested four rootstocks, ‘IAC 766 Campinas’, ‘IAC 572 Jales’, ‘IAC 571-6 Jundiaí’ and ‘IAC 313 Tropical’, planted in two climatic regions, Cfa and Aw, in the state of São Paulo, Brazil in the cultivation years 2014 and 2015. Cycle duration, production, cluster weight, number of berries per bunch, content of soluble solids, titratable acidity, a maturation index and the weight, length and width of berries were evaluated. A principal component analysis characterized the cultivar for both climatic regions and years. The rootstock did not influence the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canopy/rootstock; Climate; Principal component analysis; Vitis. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000300470 |
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| Parra-Coronado,Alfonso; Fischer,Gerhard; Camacho-Tamayo,Jesús Hernán. |
| Fruit growth is stimulated by different weather conditions. The aim of this study was to determine the influence of weather conditions on the physicochemical properties of pineapple guava fruit growth. Twenty trees were marked in two production areas located at different altitudes (1,800 and 2,580 m.a.s.l.), and measurements were performed every 7 days from 99 and 141 days post-anthesis to harvest at altitudes of 1,800 and 2,580 m.a.s.l., respectively. The results indicate that altitude and weather conditions greatly influence the growth and development of pineapple guava fruit, and these effects are primarily manifested in the physical characteristics of the fruit. The weight and size of the fruit at harvest are directly related to the altitude of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Climate; Acca sellowiana (O. Berg) Burret; Total soluble solids; Titratable acidity; Hue angle. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300359 |
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| Royo-Esnal,Aritz; López,María Luisa. |
| Oxalis latifolia is a widely distributed weed that mainly affects corn fields, orchards, plant nurseries and gardens. Two forms of the weed have been identified: the common form, with fish-tailed leaflets, bulbils growing on stolons and dark pink flowers, and the Cornwall form, with rounder leaflets, sessile bulbils and whitish-pale pink flowers. In this study, the fresh matter production, expressed as the increase of the bulbs' fresh weight, of both forms was compared during two growing seasons in two locations. The bulbs were grown in pots from spring to autumn, and different aspects of growth were measured at the end of each season. The total fresh matter production, weight of the apical bulb, total weight of the lateral bulbs and number of lateral... |
| Tipo: Journal article |
Palavras-chave: Bulb; Climate; Oxalis; Soil conditions; Weed. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000200007 |
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| Palo, Thomas R; Mid-Sweden University; Thomas.palo@miun.se. |
| Tularemia is caused by the bacterium Francisella tularensis, but the natural reservoir is unknown and environmental conditions for outbreaks in mammals and man are poorly understood. The present study analyzed the synchrony between the North Atlantic Oscillation (NAO) index, the number of human cases of tularemia reported in Sweden, and the density of hares. Climate variation at a lag of 2 yr explained as a single factor ~ 27% of the variation in the number of tularemia cases over time. A low NAO index, indicating cold winters, and low water flow in rivers during the coming summer were associated with high numbers of human cases of tularemia 2 yr later. The number of mountain hares was not related to NAO or to the number of cases of tularemia. The change... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Tularemia; Climate; North Atlantic Oscillation index; Disease transmission; Global warming; Francisella tularensis; Lepus timidus. |
| Ano: 2005 |
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| Lindgren, Elisabet; Stockholm University; elisa@system.ecology.su.se. |
| Climatic changes are projected to alter the abundance, dynamics, and geographical distribution of many vector-borne diseases in human populations. Tick-borne diseases such as Lyme disease and tick-borne encephalitis (TBE) are a growing concern in northern Europe and the United States. The impact of a future climate change on the transmission of tick-borne diseases is not known. To make such assumptions, more empirical data are needed on the relations between short-term fluctuations in contemporary weather and disease incidence. This paper analyzes relations between daily minimum and maximum temperatures, monthly precipitation, and TBE incidence during a 36-yr period in Stockholm County, a high-endemic region for TBE in Sweden. Multiple regression analyses... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Encephalitis; Tickborne; Tickborne diseases; Temperature; Climate; Ticks.. |
| Ano: 1998 |
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| Hammond, David S; NWFS Consulting; dhammond@nwfs.biz; Zagt, Roderick J; Tropenbos International; Roderick.Zagt@tropenbos.org. |
| Systems devised for managing tropical forests sustainably have yet to prove successful. In many instances, they have fallen short of initial prospects, but the reasons for these shortfalls are often not apparent. Here, we explore factors that can shape the likelihood of success, collectively referred to as background conditions, which are not always adequately considered prior to selecting a suitable management system. We examine the ability of one background condition, geologic terrane, to explain crude spatial variation in a number of trailing indicators of varying forest land use. Forest areas on Precambrian and Phanerozoic terranes show significant differences in production of fossil hydrocarbons, gold, and tropical roundwood, among other indicators,... |
| Tipo: Peer-Reviewed article |
Palavras-chave: Enabling conditions; Tropical forest management; Geologic terrane; Climate; Sustainable development. |
| Ano: 2006 |
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| Registros recuperados: 249 | |
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