Consistency analysis of pluviometric information in Galicia (NW Spain)

Mirás-Avalos, José Manuel; Mestas-Valero, Roger Manuel; Sande-Fouz, Patricia; Paz‐González, Antonio

doi:10.1016/j.atmosres.2009.05.011

Cited by 19 publications

(10 citation statements)

References 28 publications

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“…Modifications in the spatial and temporal distribution of rainfall (Mirás-Avalos et al, 2009) as well as temperature increases (Cruz et al, 2009) have already been reported in Galicia (NW Spain). These changes might cause that grapevine (Vitis vinifera L.) cultivars adapted to temperate and cool climates reach their maximum temperature threshold and lose their specific organoleptic 99 qualities.…”

Section: Introductionmentioning

confidence: 99%

Response of grapevine cv. ‘Brancellao’ and ‘Sousón’ to supplementary irrigation: Water relations, vine growth, yield and berry and wine composition

Mirás-Avalos¹,

Trigo-Córdoba²,

Bouzas-Cid

et al. 2016

Ciência Téc. Vitiv.

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SUMMARYGrowers are concerned about the negative impacts on vine yield and berry quality caused by global warming. Irrigation systems are increasingly being installed in vineyards in order to counteract those problems. Therefore, an efficient irrigation management is required. In this context, a field experiment was carried out over three years (2012)(2013)(2014) on red Vitis vinifera (L.) cv. 'Brancellao' and 'Sousón' in order to assess the effects of supplementary irrigation on vine performance and must and wine composition. Rain-fed vines were compared with a treatment irrigated to 40% of potential evapotranspiration (ET0) from bloom to two/three weeks before harvest. Both cultivars showed less negative stem water potentials under irrigation than under rain-fed conditions; however, stomatal conductance was similar between treatments. Yield was unaffected by irrigation, whereas pruning weight tended to increase in both cultivars. Must and wine composition, including amino acids and volatile compound concentrations, were mostly unaffected by irrigation. Water productivity was higher under rain-fed conditions and, as a consequence, gross incomes were not increased by irrigation. Therefore, irrigation does not seem an economically viable agricultural practice under the conditions of this trial. RESUMOOs viticultores estão preocupados com os impactos negativos no rendimento da videira e na qualidade da uva causados pelo aquecimento global. Estão a ser instalados sistemas de irrigação nas vinhas para ultrapassar estes problemas. Portanto, é necessária uma gestão eficiente da irrigação. Neste contexto, um ensaio de campo foi realizado durante três anos (2012-2014) em castas tintas 'Brancellao' e 'Sousón' (Vitis vinifera L.) a fim de avaliar os efeitos da irrigação suplementar no desempenho da videira e na composição da uva e do vinho. Videiras em sequeiro foram comparadas com um tratamento irrigado a 40% da evapotranspiração potencial (ET0) desde a floração até duas/três semanas antes da vindima. Ambas as variedades mostraram potenciais hídricos do ramo menos negativos sob irrigação que em sequeiro; no entanto, a condutância estomática foi similar entre os tratamentos. O rendimento não foi afetado pela irrigação, mas o peso de poda tendeu a aumentar em ambas as variedades. A composição do mosto e do vinho, incluindo concentrações de aminoácidos e de compostos voláteis, foram afetadas pela irrigação. A produtividade da água foi maior em condições de sequeiro e, como consequência, o rendimento bruto não sofreu aumento com a irrigação. Portanto, a irrigação não parece ser uma prática agrícola economicamente viável nas condições deste estudo.

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Section: Introductionmentioning

confidence: 99%

Response of grapevine cv. ‘Brancellao’ and ‘Sousón’ to supplementary irrigation: Water relations, vine growth, yield and berry and wine composition

Mirás-Avalos¹,

Trigo-Córdoba²,

Bouzas-Cid

et al. 2016

Ciência Téc. Vitiv.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In Galicia, an increase in temperature of up to 1.1 ºC (0.37 ºC for each decade from 1972 to 2006) has already been reported (Cruz et al, 2009) as well as modifications in the spatial and temporal distribution of rainfall, with less rainfall in summer months (June-September) (Mirás-Avalos et al, 2009), which could affect berry set and fruit maturation. These changes might cause Galician grapevine cultivars, adapted to temperate and cool climates, to reach more rapidly their optimum temperature and, consequently, lose their specific organoleptic qualities.…”

Section: Introductionmentioning

confidence: 99%

Irrigation effects on the performance of grapevine (<em>Vitis vinifera</em> L.) cv. ‘Albariño’ under the humid climate of Galicia

Mirás-Avalos¹,

Trigo-Córdoba²,

Bouzas-Cid³

et al. 2016

OENO One

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Aims: Vine-growers worldwide are concerned about climate change effects on grape yield and quality. Drip irrigation systems are increasingly being installed even in humid regions such as Galicia (NW Spain). In this context, a field experiment was carried out over three seasons (2012)(2013)(2014) on white Vitis vinifera L. cv. 'Albariño' to assess the effects of deficit irrigation on vine physiology, yield and must and wine composition. Methods and results:Rain-fed vines were compared with a treatment irrigated to 50% of the estimated crop evapotranspiration (ET c ) from bloom to two weeks before harvest. Irrigated vines showed more positive stem water potentials than those rain-fed. Yield was unaffected by irrigation except in 2014 (19% increase). Pruning weight was increased by irrigation. Must soluble solids tended to decrease and total acidity to increase with irrigation; however, wines were similar between treatments. Water productivity was slightly higher under rain-fed conditions. Conclusion:Under the conditions of this experiment, irrigation was of no interest either in terms of grape and wine quality or in terms of net income.Significance and impact of the study: These results may be useful for managing water resources in vineyards under similar climatic conditions. Key words: Drip irrigation, crop yield and quality, vine water status, water productivity, white wine Abstract manuscript

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“…Today, geospatial statistical approaches in Geographical Information Systems (GIS) are also welcomed to supply ecological attributes in the form of spatial data for use in a variety of applications and models (e.g. Bindlish and Barros 2000;Goovaerts 2000;Diodato 2005;Attorre et al 2007;Vicente-Serrano et al 2007;Pons and Ninyerola 2008;Mirás-Avalos et al 2009). Despite the great importance of climate inputs to their analyses, many users do not have a substantial background in geospatial climatology (the study of the spatial patterns of climate) and are, therefore, not in a position to critically assess the suitability of spatial climate data sets for a particular application (Daly 2006).…”

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confidence: 99%

Geospatial Rainfall Modelling at Eastern Nepalese Highland from Ground Environmental Data

Diodato¹,

Tartari

Bellocchi³

2010

Water Resour Manage

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The study presents a geospatial knowledge transfer framework by accommodating precipitation maps for the Eastern Nepalese Highland (ENH) across an area of about 100,000 km 2 . For this remote area, precipitation-elevation relationships are not homogeneously distributed, but present a chaotic gradient of correlations at altitude ranges. This is mainly due to impervious orography, extreme climate, and data scarcity (most of the rain gauges in Himalaya are located at valley bottoms). Applying geostatistical models (e.g. multivariate geospatial approaches) is difficult in these zones. This makes the ENH an interesting test area where we obtained monthly precipitation spatial patterns for a 30-year period . The aim was to both capture orographic meso-α spatial regimen (∼30 km) and local pattern variability (∼10 km). Data from 58 FAO raingauges were used plus data from an atmospheric weather station (AWS Pyramid) operating at 5,050 m a.s.l., used to compensate the gap of precipitation pattern presents in the area surrounding the Mount Everest. In these complex orographically remote areas of the Himalayas, monsoon precipitation systems exhibit important topographical interactions and spatial correlations, depending on the scale at which the primary variable (e.g., precipitation) and co-variables (e.g., elevation) are recorded and analysed. Precipitations were assessed for months-May, July and September-representative N. Diodato (B) · G. Bellocchi N. Diodato et al.of the monsoon season. For the rainiest month (July), cokriging indicated a range of precipitation values from ∼100 mm over the Tibetan Plateau to ∼500 mm in the southern part of Nepal, up to ∼900 mm towards the pre-Himalayan range. For July, cokriging precipitation map also showed correspondence with the map of vegetation pattern, and therein lies the clue to using multivariate geostatistical models as flexible approaches for estimating precipitation spatial patterns in remote areas.

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Consistency analysis of pluviometric information in Galicia (NW Spain)

Cited by 19 publications

References 28 publications

Response of grapevine cv. ‘Brancellao’ and ‘Sousón’ to supplementary irrigation: Water relations, vine growth, yield and berry and wine composition

Response of grapevine cv. ‘Brancellao’ and ‘Sousón’ to supplementary irrigation: Water relations, vine growth, yield and berry and wine composition

Irrigation effects on the performance of grapevine (<em>Vitis vinifera</em> L.) cv. ‘Albariño’ under the humid climate of Galicia

Geospatial Rainfall Modelling at Eastern Nepalese Highland from Ground Environmental Data

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