scholarly journals Broad Leaf Trees as Reservoirs for Phytoseiid Mites (Acari: Phytoseiidae)

2011 ◽  
Vol 39 (No. 2) ◽  
pp. 65-69 ◽  
Author(s):  
J. Kabíček
Keyword(s):  
Species Diversity ◽  
Fagus Sylvatica ◽  
Tree Species ◽  
Quercus Robur ◽  
Betula Pendula ◽  
Deciduous Tree ◽  
Acer Platanoides ◽  
Phytoseiid Mites ◽  
Salix Caprea ◽  
Broad Leaf

The possibility that broad leaf trees can be reservoirs for phytoseiid mites was investigated by determining their occurrence and species diversity on common deciduous tree species. No phytoseiid mites were found on Betula pendula and Populus tremula. Altogether  280 specimens of phytoseiids belonging to six species (Neoseiulella ace-ri, N. tiliarum, Paraseiulus soleiger, Euseius finlandicus, Phytoseius severus, Typhlodromus rhenanus) were found on Acer platanoides, Fagus sylvatica, Quercus robur and Salix caprea. Ph. severus was the dominant phytoseiid species on S. caprea, while N. aceri was most abundant on A. platanoides. The greatest abundance and species diversity of phytoseiids were found on S. caprea that can thus constitute an excellent reservoir for some phytoseiid mites, particularly Phytoseius spp.  

Changes of Starch Content in the Storage Tissues of Deciduous Trees During Winter and Spring

IAWA Journal ◽  
1985 ◽  
Vol 6 (2) ◽  
pp. 97-106 ◽  
Author(s):  
Sam. Essiamah ◽  
Walter Eschrich
Keyword(s):  
Fagus Sylvatica ◽  
Tree Species ◽  
Quercus Robur ◽  
Betula Pendula ◽  
Starch Content ◽  
Alnus Glutinosa ◽  
Deciduous Tree ◽  
Deciduous Trees ◽  
Acer Pseudoplatanus ◽  
Bud Break

Starch transformation in relation to spring sap production has been investigated in six North European deciduous tree species from fall till the beginning of bud break in spring. The species examined were: Acer pseudoplatanus L., Betula pendula Roth, Alnus glutinosa Gärtn., Fagus sylvatica L., Quercus robur L., and Fraxinus excelsior L.

scholarly journals Blue light advances bud burst in branches of three temperate deciduous tree species under short-day conditions

2018 ◽  
Author(s):  
Craig C. Brelsford ◽  
T Matthew Robson
Keyword(s):  
Blue Light ◽  
Tree Species ◽  
Quercus Robur ◽  
Betula Pendula ◽  
Alnus Glutinosa ◽  
Deciduous Tree ◽  
Bud Burst ◽  
Spring Phenology ◽  
Temperate Deciduous ◽  
Successional Species

AbstractDuring spring, utilising multiple cues allow temperate tree species to coordinate their bud burst and leaf out, at the right moment to capitalise on favourable conditions for photosynthesis. Whilst the effect of blue light (400-500nm) has been shown to increase percentage bud burst of axillary shoots of Rosa sp, the effects of blue light on spring-time bud burst of temperate deciduous tree species has not previously been reported. We tested the hypotheses that blue light would advance spring bud burst in temperate tree species, and that late-successional species would respond more than early-successional species, who’s bud burst is primarily determined by temperature. The bud development of Alnus glutinosa, Betula pendula, and Quercus robur branches, cut from dormant trees, was monitored under two light treatments of equal photosynthetically active radiation (PAR, 400-700 nm) and temperature, either with or without blue light, under controlled environmental conditions. In the presence of blue light, the mean time required to reach 50% bud burst was reduced by 3.3 days in Betula pendula, 6 days in Alnus glutinosa, and 6.3 days in Quercus robur. This result highlights the potential of the blue region of the solar spectrum to be used as an extra cue that could help plants to regulate their spring phenology, alongside photoperiod and temperature. Understanding how plants combine photoreceptor-mediated cues with other environmental cues such as temperature to control phenology is essential if we are to accurately predict how tree species might respond to climate change.Key MessageAn LED spectrum containing blue light advanced bud burst in branches of Betula pendula, Alnus glutinosa and Quercus robur compared with a spectrum without blue light in a controlled environment.

Genetic Variability in Two Tree Species, Acer platanoides L. and Betula pendula Roth, With Contrasting Life-history Traits

2003 ◽  
Vol 18 (4) ◽  
pp. 320-331 ◽  
Author(s):  
Gösta Eriksson ◽  
Sanna Black-samuelsson ◽  
Martin Jensen ◽  
Tor Myking ◽  
Mari Rusanen ◽  
...  
Keyword(s):  
Life History ◽  
Genetic Variability ◽  
Tree Species ◽  
Betula Pendula ◽  
Life History Traits ◽  
Acer Platanoides ◽  
Betula Pendula Roth

Leaves of common urban tree species (Aesculus hippocastanum, Acer platanoides, Betula pendula and Tilia cordata) as a measure of particle and particle-bound pollution: a 4-year study

2019 ◽  
Vol 12 (9) ◽  
pp. 1081-1090 ◽  
Author(s):  
Mira Aničić Urošević ◽  
Gordana Jovanović ◽  
Nenad Stević ◽  
Isidora Deljanin ◽  
Miroslav Nikolić ◽  
...  
Keyword(s):  
Tree Species ◽  
Betula Pendula ◽  
Aesculus Hippocastanum ◽  
Tilia Cordata ◽  
Acer Platanoides ◽  
Urban Tree

scholarly journals Impact of urban green spaces, native tree species and seasons on soil pH in Kaunas, Lithuania

2019 ◽  
Vol 25 (2) ◽  
pp. 257-262 ◽  
Author(s):  
Lina Straigytė ◽  
Tadas Vaidelys ◽  
Remigijus Žalkauskas ◽  
Michael Manton
Keyword(s):  
Soil Ph ◽  
Tree Species ◽  
Betula Pendula ◽  
Green Space ◽  
Urban Environments ◽  
Green Spaces ◽  
Tilia Cordata ◽  
Acer Platanoides ◽  
Urban Green Spaces ◽  
Different Types

Tree growth is sensitive to soil pH in urban areas and is often higher than in rural forest. However, there are knowledge gaps on how soil pH and alkalization are affected by urban environments and seasonal climate as well as the cascading effects on tree species. In order to fulfill these gaps, we analyzed the soil pHCaCl of four common native deciduous tree species: Acer platanoides, Tilia cordata, Quercus robur and Betula pendula in five different types of urban green spaces in Kaunas city municipality (Lithuania). The results show that soil pH in urban environments with Betula pendula sites were most alkaline (pH 7.04), whereas the soil pH of urban environments with Acer platanoides (pH 6.7) and Tilia cordata (pH 6.8) were most acidic. The soil pH of street tree greeneries was alkaline, while soils of peri-urban forests and large urban parks were acidic. Differently to natural conditions in peri urban forests the soil pH level drop down by 0.5 is observed during spring-autumn period in broad street greeneries with largest urban pressure. The variation in soil pH of the different types of green space and tree species shows that city planner should consider the unique conditions of all green space to maximize their potential for human well-being.

scholarly journals BVOC emissions from English oak (<i>Quercus robur</i>) and European beech (<i>Fagus sylvatica</i>) along a latitudinal gradient

2016 ◽  
Author(s):  
Ylva Persson ◽  
Guy Schurgers ◽  
Riikka Rinnan ◽  
Thomas Holst
Keyword(s):  
Fagus Sylvatica ◽  
Tree Species ◽  
Quercus Robur ◽  
Latitudinal Gradient ◽  
Genotypic Variation ◽  
European Beech ◽  
Frost Damage ◽  
Climatic Conditions ◽  
Relative Contribution ◽  
English Oak

Abstract. English oak (Quercus robur) and European beech (Fagus sylvatica) are amongst the most common tree species growing in Europe, influencing the annual Biogenic Volatile Organic Compound (BVOC) budget in this region. Studies have shown great variability in the emissions from these tree species, originating from both genetic variability and differences in climatic conditions between study sites. In this study, we examine the emission patterns for English oak and European beech in genetically identical individuals and the potential variation within and between sites. Leaf scale BVOC emissions, net assimilation rates and stomatal conductance were measured at the International Phenological Garden sites of Ljubljana (Slovenia), Grafrath (Germany) and Taastrup (Denmark). Sampling was conducted during three campaigns between May and July 2014. Our results show that English oak mainly emitted isoprene whilst European beech released monoterpenes. The relative contribution of the most emitted compounds from the two species remained stable across latitudes. The contribution of isoprene for English oak from Grafrath and Taastrup ranged between 92–97 % of the total BVOC emissions, whilst sabinene and limonene for European beech ranged between 30.5–40.5 % and 9–15 % respectively for all three sites. The relative contribution of isoprene for English oak at Ljubljana was lower (78 %) in comparison to the other sites, most likely caused by frost damage in early spring. The variability in total leaf-level emission rates from the same site was small, whereas there were greater differences between sites. These differences were probably caused by short-term weather events and plant stress. A difference in age did not seem to affect the emission patterns for the selected trees. This study highlights the significance of within-genotypic variation of BVOC emission capacities for English oak and European beech, the influence of climatic variables such as temperature and light on emission intensities and the potential stability in relative compound contribution across a latitudinal gradient.

scholarly journals Susceptibility of Polish provenances and families of pedunculate oak (Quercus robur L.) to colonisation by Phytophthora cambivora

2013 ◽  
Vol 74 (2) ◽  
pp. 161-170 ◽  
Author(s):  
Robert Jankowiak ◽  
Jacek Banach ◽  
Angelika Balonek
Keyword(s):  
Tree Species ◽  
Root Rot ◽  
Quercus Robur ◽  
Stem Canker ◽  
Deciduous Tree ◽  
Lesion Length ◽  
Pedunculate Oak ◽  
Significant Variability ◽  
Forest District

Abstract Phytophthora cambivora (Straminipila, Oomycota) causes root rot and stem canker on several deciduous tree species in Europe. However, very little is known about the variation in susceptibility to P. cambivora colonisation among provenances and families of pedunculate oak (Quercus robur L.). We studied variation in susceptibility of one French and 16 Polish provenances, representing 62 families. Samples were taken from three test plots located in the Brzesko Forest District. Oak susceptibility to P. cambivora was assessed by measuring lesion length following inoculation of excised shoots with two isolates of P. cambivora. There was significant variability in susceptibility among the 17 provenances tested. The highest susceptibility to P. cambivora was apparent in several provenances including Tronçais, Zaporowo, Runowo, Opole and Krotoszyn; while the most resistant provenances originated from Chojnów, Siedlce, Płock, Krotoszyn-90 and Wioska. There was also significant within-provenances variation in susceptibility to P. cambivora.

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