Tree-ring Δ13C reveals the impact of past forest management on water-use efficiency in a Mediterranean oak coppice in Tuscany (Italy)     

Giovanni Di Matteo  Paolo De Angelis  Enrico Brugnoli  Paolo Cherubini  Giuseppe Scarascia-Mugnozza 《Annals of Forest Science》2010,67(5):510-510

? The effects of thinning and heavy stand density reduction was investigated in Turkey oak (Quercus cerris L.) forests of central Italy, to evaluate the physiological responses and the growth status of trees that survived a past coppice cut and thinning to convert the stand to high-forest.

? The working hypothesis was that a strong decrease in stand density would cause a decreasing in canopy-intrinsic water-use efficiency (measured as the ratio of CO₂ assimilation to stomatal conductance, A/g), thus an increase in tree-ring carbon isotopic discrimination (Δ¹³C).

? The tree-ring Δ¹³C of the remaining trees (“survivors”) was found to have significantly (P < 0.05) raised between year two and year seven since the coppice stand was thinned (high-forest conversion thinnings). This effect was mostly caused by a large decrease in tree-rings Δ¹³C at control site which was characterized by high density and competition by trees. An increase in survivors tree-rings Δ¹³C probably indicates an improved water availability, possibly induced by a decrease in competition and in stand density or a decrease in the precipitation intercepted by the canopy (i.e., a stronger increase in g over A since a decrease in A is highly unlikely). A change in foliar nitrogen, foliar Δ¹³C and content in chlorophylls was also recorded seven years after thinning.

? Thinnings carried out to convert old abandoned coppices into high-forest stands induce short-term stimulation of Turkey oak growth by increasing light and water availability. We were able to make a detailed reconstruction of the impact of past silvicultural treatment on the stand using a tree-ring wood Δ¹³C time-series.

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Phylogeny of Egyptian isolates of <Emphasis Type="Italic">Cucumber mosaic virus</Emphasis> (CMV) and <Emphasis Type="Italic">Tomato mosaic virus</Emphasis> (ToMV) infecting <Emphasis Type="Italic">Solanum lycopersicum</Emphasis>     

Mona Rabie  Claudio Ratti  Matteo Calassanzio  Engy Abdel Aleem  Faiza Aref Fattouh 《European journal of plant pathology / European Foundation for Plant Pathology》2017,149(1):219-225

Four Cucumber mosaic virus (CMV) (CMV-HM 1–4) and nine Tomato mosaic virus (ToMV) (ToMV AH 1–9) isolates detected in tomato samples collected from different governorates in Egypt during 2014, were here characterized. According to the coat protein gene sequence and to the complete nucleotide sequence of total genomic RNA1, RNA2 and RNA3 of CMV-HM3 the new Egyptian isolates are related to members of the CMV subgroup IB. The nine ToMV Egyptian isolates were characterized by sequence analysis of the coat protein and the movement protein genes. All isolates were grouped within the same branch and showed high relatedness to all considered isolates (98–99%). Complete nucleotide sequence of total genomic RNA of ToMV AH4 isolate was obtained and its comparison showed a closer degree of relatedness to isolate 99–1 from the USA (99%). To our knowledge, this is the first report of CMV isolates from subgroup IB in Egypt and the first full length sequencing of an ToMV Egyptian isolate.  相似文献   

Pinus nigra anthropogenic treelines in the central Apennines show common pattern of tree recruitment     

Alma Piermattei  Emanuele Lingua  Carlo Urbinati  Matteo Garbarino 《European Journal of Forest Research》2016,135(6):1119-1130

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Influence of stand,site and meteorological variables on the maximum leaf area index of beech,oak and Scots pine   总被引：1，自引：0，他引：1  

Raphael Bequet  Vincent Kint  Matteo Campioli  Dries Vansteenkiste  Bart Muys  Reinhart Ceulemans 《European Journal of Forest Research》2012,131(2):283-295

Different multiple linear regression models of maximum leaf area index (LAI_max) based on stand characteristics, site quality, meteorological variables and their combinations were constructed and cross-validated for three economically important tree species in Flanders, Belgium: European beech (Fagus sylvatica L.), Pedunculate oak (Quercus robur L.) and Scots pine (Pinus sylvestris L.). The models were successfully tested on similar datasets of experimental sites across Europe. For each species, ten homogeneous and mature stands were selected, covering the species’ entire stand productivity range based on an a priori site index classification. LAI_max was derived from measurements of leaf area index (LAI) made by means of hemispherical digital photography over the whole growing season (mid-April till end October 2008). Species-specific models of LAI_max for beech and oak were mostly driven by management practice affecting stand characteristics and tree growth. Tree density and dominant height were main predictors for beech, while stand age and tree-ring growth were important in the oak models. Scots pine models were more affected by site quality and meteorological variables. The beech meteorological model showed very good agreement with LAI at several European sites. Scots pine’s stand model predicted well LAI across Europe. Since the species-specific models did not share common predictors, generic models of LAI_max were developed for the 30 studied sites. Dominant height was found to be the best predictor in those generic models. As expected, they showed a lower predictive performance than species-specific ones.  相似文献   

Influence of Cooling Systems on the Behaviour of Dairy Cows Housed in Cubicle Barn     

Matteo Barbari  Lorenzo Leso  Giuseppe Rossi  Alberto Scaramelli  Stefano Simonini 《农业科学与技术》2012,(1):40-49

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An overview of proven Climate Change Vulnerability Assessment tools for forests and forest-dependent communities across the globe: a literature analysis     

Caterina Guidi  Giovanni Di Matteo  Stefano Grego 《林业研究》2018,29(5):1167-1175

Climate Change Vulnerability Assessment (VA) tools for forest ecosystems and forest-dependent communities are important for making decisions and understanding the impact of climate change on both social and natural systems. However, the tools are poorly coordinated, making it difficult for policymakers to carry out VAs properly. The aim of this study was to analyze VA literature worldwide to find representative case studies in terms of methods and tools applied and which have been successful in performing VAs on forests and forest-dependent communities. All successful VA studies analyzed had common characteristics such as significant funding, data availability and technical capacity. An additional characteristic was the development of an integrated approach that considered the vulnerability of both ecosystems and communities by combining qualitative and quantitative methods. Community members and relevant stakeholders were significantly involved in a participatory process that concluded with the identification of adaptation measures. The case studies also revealed how policymakers need to choose suitable methods and tools to undertake efficient assessment of vulnerabilities. They need to consider several aspects of the VA process such as subject matter, availability of resources, time and scale.  相似文献   

Calcium chloride washing of calcareous sediment from a freshwater canal: effect on the removal of potentially toxic elements and water aggregate stability     

Buscaroli  Enrico  Sciubba  Luigi  Falsone  Gloria  Cavani  Luciano  Brecchia  Matteo  Argese  Emanuele  Marzadori  Claudio  Pourrut  Bertrand  Braschi  Ilaria 《Journal of Soils and Sediments》2019,19(7):3098-3107

Journal of Soils and Sediments - Canal dredging and shaping produce considerable amounts of sediments whose reuse on- and off-site depends on their pollution level. This study explores the...  相似文献   

Milk composition,fatty acids profile and fat globule size of bottlenose dolphin (Tursiops truncatus,Montagu 1821) milk at early lactation     

Martini  Mina  Altomonte  Iolanda  Sommer  Matteo Federico  Gili  Claudia  Biancani  Barbara  Licitra  Rosario  Salari  Federica 《Veterinary research communications》2022,46(2):577-583

Veterinary Research Communications - Research data on milk composition in cetaceans are scattered and fragmentary. This paper analyses the gross and mineral composition, the fatty acids profile and...  相似文献   

Invertebrate diversity associated with a shallow rhodolith bed in the Mediterranean Sea (Mar Piccolo of Taranto,south-east Italy)     

Cataldo Pierri  Caterina Longo  Annalisa Falace  Maria F. Gravina  Michele Gristina  Sara Kaleb  Tamara Lazic  Stefania Lisco  Massimo Moretti  Matteo Putignano  Miriam Ravisato  Roberta Trani  Marco Dadamo  Paolo G. Albano 《水产资源保护:海洋与淡水生态系统》2024,34(1):e4054

Elimination of <Emphasis Type="Italic">Grapevine fanleaf virus</Emphasis> from three <Emphasis Type="Italic">Vitis vinifera</Emphasis> cultivars by somatic embryogenesis     

Giorgio Gambino  Daniele Di Matteo  Ivana Gribaudo 《European journal of plant pathology / European Foundation for Plant Pathology》2009,123(1):57-60

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