Auswirkungen von Weiden (Salix spp.) und Pappeln (Populus spp.) im Kurzumtrieb auf die biologische Vielfalt am Beispiel von Laufkäfern (Carabidae)

2012 ◽  
Vol 64 (3) ◽  
pp. 129-139 ◽  
Author(s):  
Kristin Nerlich ◽  
Frieder Seidl ◽  
Klaus Mastel ◽  
Simone Graeff-Hönninger ◽  
Wilhelm Claupein
Keyword(s):  
Biologische Vielfalt ◽  
Populus Spp ◽  
Salix Spp

scholarly journals Aptitud forestal de las tierras no agrícolas del norte de la provincia de Buenos Aires (Argentina)

2019 ◽  
Vol 118 (2) ◽  
pp. 018
Author(s):  
Ana Maria Lupi ◽  
Marcos Angelini ◽  
Gabriela Civeira ◽  
Julieta Irigoin
Keyword(s):  
Evaluation System ◽  
Buenos Aires ◽  
Land Evaluation ◽  
Populus Spp ◽  
Salix Spp

El objetivo de este trabajo fue clasificar, cuantificar y cartografiar la aptitud forestal de las tierras no agrícolas del N-NE de la provincia de Buenos Aires. Para ello se aplicó el software Automated Land Evaluation System (ALES) propuesto por la FAO. Las especies consideradas fueron: E. camaldulensis, E. dunnii; E. saligna, E. tereticornis, E. viminalis y los géneros Salix spp. y Populus spp. Se utilizaron las Cartas de Suelos de la provincia de Buenos Aires escala 1:50.000 del INTA. Como criterios diagnósticos se utilizaron la profundidad de fluctuación de la napa freática, el pH, la textura del horizonte superficial y el drenaje, entre otros. El balance de superficies indica que existen 92.089 ha de tierras aptas para implantar E. camaldulensis de las cuales el 13% se consideran sin limitantes. Para E. tereticornis existen 91.841 ha aptas, donde el 13% son muy aptas. La superficie de tierras aptas para E. saligna y E. viminalis alcanzó las 40.718 ha de las cuales el 30% son muy aptas. Estas dos especies presentan restricciones climáticas en el área evaluada debido a la susceptibilidad al frío en el período de implantación. Para E. dunnii, con 40.718 ha, no se identificaron tierras muy aptas. En cuanto al género Populus, el potencial de tierras disponibles es de 42.000 ha, siendo el 29% muy aptas. Para el género Salix la superficie fue de 47.243 ha. Estos resultados muestran que existe una importante superficie de tierras potencialmente aptas para el desarrollo de una cuenca forestal en la región sin competencia con la agricultura.

scholarly journals INTERNAL CAUSE ANALYSIS OF DAMAGE OF WOODEN COMPONENTS IN DANXIA TEMPLE ANCIENT ARCHITECTURES: TREE SPECIES

Wood Research ◽  
2021 ◽  
Vol 66 (2) ◽  
pp. 297-308
Author(s):  
Yan Yang ◽  
He Sun ◽  
Shuang Yang ◽  
Aifeng Wang ◽  
Rui Zhao ◽  
...  
Keyword(s):  
Tree Species ◽  
Cell Walls ◽  
Chemical Compositions ◽  
Bright Field ◽  
Decay Fungi ◽  
Cause Analysis ◽  
Fluorescence Light ◽  
Quercus Spp ◽  
Populus Spp ◽  
Salix Spp

In the study, part of degraded wooden components of Danxia Temple ancient architectures in China were indentified through the bright field microscope, and chemical compositions in cell walls were observed using polarized and fluorescence lights, respectively. The results showed that samples were belonged to Quercus spp., Ulmus spp., Salix spp., and Populus spp., respectively. Cellulose composition in Quercus spp. was seriously consumed by brown decay fungi, cellulose and lignin compositions in Ulmus spp. were consumed by white decay fungi under polarized and fluorescence light observations. All of these four kind of tree species themselves were easily vulnerable to be attacked by insects.

INFRARED SPECTRA OF HUMIC ACIDS AND OPAL PHYTOLITHS AS INDICATORS OF PALAEOSOLS

1969 ◽  
Vol 49 (1) ◽  
pp. 29-37 ◽  
Author(s):  
J. F. Dormaar ◽  
L. E. Lutwick
Keyword(s):  
Humic Acids ◽  
Infrared Spectra ◽  
Coarse Silt ◽  
Human Occupation ◽  
Grassland Soils ◽  
Opal Phytoliths ◽  
Southern Alberta ◽  
Riparian Habitats ◽  
Populus Spp ◽  
Salix Spp

Palaeosols may: be found in almost every stream valley in southern Alberta. Humic acids from Ah horizons of palaeosols from five locations were examined by infrared spectroscopy, and the percentage of opal phytoliths in the coarse silt (20 to 50 μ) fraction was determined.The combination of the character of the infrared spectra of humic acids and opal phytolith counts was helpful in explaining the genesis of the palaeosols of the five locations. Sometimes the presence or absence of evidence of human occupation will add to the interpretation. In the locations examined, grasslands apparently have been dominant during post-glacial times with invasions of trees, such as Populus spp. and Salix spp., in the moister and more sheltered riparian habitats in this area. Any of these invasions naturally led to a transformation of these grassland soils.

Distribution and abundance of Cryptorhynchus lapathi on Salix spp. in British Columbia

2002 ◽  
Vol 32 (3) ◽  
pp. 561-568 ◽  
Author(s):  
Cynthia L Broberg ◽  
John H Borden ◽  
Leland M Humble
Keyword(s):  
British Columbia ◽  
Regression Model ◽  
Economic Impact ◽  
Model Based ◽  
Mean Temperature ◽  
Populus Spp ◽  
Salix Spp

Larvae of the poplar and willow borer, Cryptorhynchus lapathi (L.), an exotic Eurasian weevil, bore into the stems of Salix and Populus spp. creating infection courts for pathogens and weakening stems to breakage. We conducted a survey to determine the distribution and prevalence of C. lapathi in British Columbia. The survey spanned five biogeoclimatic zones, 15 subzones, 45 locations, 135 sites, and 3360 trees. We found the still-expanding range of C. lapathi to have at least doubled since 1963. The weevil was present in 38 locations and 14 subzones, with prevalence of weevil-attacked trees significantly lower in cold than in warm subzones. A regression model based on number of months with mean temperature >10°C reliably described the proportions of attacked trees in the 15 subzones (r2 = 0.81) and predicts that [Formula: see text] 25% of willows in 58.1% of British Columbia could ultimately be infested. The number of individual weevils per tree and per stem and the intensity of attack were positively and either exponentially (per tree and per stem) or logistically (intensity of attack) related to the prevalence of attacked trees (r2 = 0.41, 0.36, and 0.75, respectively). As the prevalence and intensity of attack by C. lapathi in British Columbia increase, so may the ecological and economic impact of the weevil.

Millennial zoological mystery of medieval Persian scientists

2019 ◽  
Vol 28 (2) ◽  
pp. 201-227
Author(s):  
I.A. Gavrilov-Zimin ◽  
A.S. Kurochkin
Keyword(s):  
Central Asia ◽  
Identification Key ◽  
Native People ◽  
Scale Insects ◽  
Southern Iran ◽  
Biological Characters ◽  
Medieval Text ◽  
Red Dye ◽  
First Time ◽  
Salix Spp

Great medieval scientist-polymath Abu Rayhan Al-Beruni (973–1050) wrote in his book “Pharmacognosy” about some kind of “worms” inhabiting willows in Azerbaijan and Southern Iran and used by native people for producing of a red dye. It was unclear during one thousand years which organisms Al-Beruni noted as those dye-producing “worms”. Some modern authors even suggested that the relevant medieval text was partly erroneous. To the contrary, in the present paper we, for the first time, consider some species of the felt scale insects (Coccinea: Eriococcidae) as the organisms, which have probably been used for the production of the red dye in the medieval countries of Western and Central Asia. These insects are several species from two closely related genera Acanthococcus Signoret, 1875 and Gossyparia Signo­ret, 1875. The review of biological characters, identification key, new figures and colour photographs are provided for the species of Acanthococcus and Gossyparia associated with Salix spp. in the Asiatic Region. Acanthococcus turanicus Matesova, 1967, syn. nov. is placed in synonymy with A. salicis (Borchsenius, 1938), and A. altaicus Matesova, 1967, syn. nov. is placed in synonymy with A. spiraeae Borchsenius, 1949. Earlier discovered synonymy of A. melnikensis (Hodgson et Trencheva, 2008) with A. aceris Signoret, 1875 is discussed. Some other dye-producing scale insects and their pigments are also briefly considered.

Irrigation management in poplar (Populus spp.) plantations: A review

2021 ◽  
Vol 494 ◽  
pp. 119330
Author(s):  
Benye Xi ◽  
Brent Clothier ◽  
Mark Coleman ◽  
Jie Duan ◽  
Wei Hu ◽  
...  
Keyword(s):  
Irrigation Management ◽  
Populus Spp

Perspectives on Populus spp. (Salicaceae) bud extracts as antioxidant and anti-inflammatory agents

2021 ◽  
pp. 1-5
Author(s):  
Elisa Pannucci ◽  
Donatella D’Eliseo ◽  
Francesca Ieri ◽  
Annalisa Romani ◽  
Luca Santi ◽  
...  
Keyword(s):  
Anti Inflammatory ◽  
Populus Spp

RAPD fingerprints for identification and for taxonomic studies of elite poplar (Populus spp.) clones

1993 ◽  
Vol 87 (1-2) ◽  
pp. 54-59 ◽  
Author(s):  
S. Castiglione ◽  
G. Wang ◽  
G. Damiani ◽  
C. Bandi ◽  
S. Bisoffi ◽  
...  
Keyword(s):  
Rapd Fingerprints ◽  
Taxonomic Studies ◽  
Populus Spp
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