Results 51 to 60 of about 5,247 (199)

Status of ash (Fraxinus spp.) in mixed hardwood post‐outbreak forests near the epicentre of the emerald ash borer invasion

Agricultural and Forest Entomology, EarlyView.
The persistence and health of ash populations were characterized in post‐outbreak forests near the epicentre of the emerald ash borer (EAB) invasion in North America. Regenerating ash remained abundant, but densities of understory ash were higher in wetlands (hydric), while ash remained at the seedling stage in riparian (mesic) and upland (xeric ...
Aaron Tayal, Kayla I. Perry
wiley   +1 more source

H2O2 Significantly Affects Larix kaempferi × Larix olgensis Somatic Embryogenesis

International Journal of Molecular Sciences
Larch is widely distributed throughout the world and is an important species for timber supply and the extraction of industrial raw materials. In recent years, the hybrid breeding of Larix kaempferi and Larix olgensis has shown obvious heterosis in quick-growth, stress resistance and wood properties.
Junjie Zhu, Kaikai Zhang, Huiru Xiong, Yunhui Xie, Rui Li, Xinru Wu, Yun Yang, Hua Wu, Zhaodong Hao, Xiaomei Sun, Jinhui Chen   +10 more
openaire   +2 more sources

Host desiccation and interspecific competition limit reproductive performance of a bark beetle

Agricultural and Forest Entomology, EarlyView.
At high and moderate phloem moisture levels, Polygraphus proximus reproductive success was suppressed by sympatric species density. At low phloem moisture, P. proximus reproductive success was suppressed by the low phloem moisture regardless of the Cryphalus laricis hole density. Conspecific density (i.e., attack density of P.
Mai Aochi, Etsuro Takagi
wiley   +1 more source

Eastern larch beetle (Dendroctonus simplex LeConte) as a potential threat to western (Larix occidentalis Nutt.) and subalpine larches (Larix lyalli Parl.)

Frontiers in Forests and Global Change
Eastern larch beetle Dendroctonus simplex LeConte has been outbreaking for the past two decades in the Great Lakes region of North America, impacting approximately 400,000 hectares of eastern larch Larix laricina (tamarack) forest in Minnesota, United ...
Rose M. Picklo, Erika Eidson, Brytten Steed, Brian H. Aukema   +3 more
doaj   +1 more source

Le patriarche d’Isola 2000 : un vénérable mélèze des Alpes maritimes (France)

Revue Forestière Française, 2015
Un vénérable mélèze d’Europe (Larix europaea DC. = Larix decidua Miller), encore en vie, se trouve au-dessus d’Isola 2000 (commune d’Isola, Alpes-Maritimes, France), à plus de 2 160 m d’altitude. Son âge a pu être estimé entre 550 et 750 ans. En lui-même,
Henri Sandoz
doaj   +1 more source

Changing climates and environments within the complex Middle to Late Pleistocene fill of an overdeepened valley at Niederweningen, Switzerland

Boreas, EarlyView.
Glacially overdeepened valleys in the northern Alpine Foreland preserve Middle to Late Pleistocene sedimentary sequences that may serve as valuable archives for reconstructing past environmental changes in response to shifts in climate. This study presents a multidisciplinary analysis of two sediment cores from the overdeepened Wehntal Valley at ...
Johannes M. Miocic, Nigel Thew, Ruth Drescher‐Schneider, Hans Rudolf Graf, Marlu Kühn, Frank Preusser, Werner H. Schoch, Lucia Wick, Heinz Furrer   +8 more
wiley   +1 more source

Seasonal variability of chlorophyll content and the changes of the acidity and buffer capacity in the needles of Larix decidua and Larix leptolepis grown in different air pollution conditions

Acta Societatis Botanicorum Poloniae, 2015
The needles of Larix decidua Mili. and Larix leptolepis showed different pattern of seasonal chlorophyll variability, the level of pigments in L. decidua was more influenced by zinc-plant emissions than that in L. leptolepis.
Zuzanna Czuchajowska, Stanisław Niemtur
doaj   +1 more source

DYNAMICS OF PECTIN CONTENT IN LARIX SIBIRICA AND LARIX GMELINII BARK

chemistry of plant raw material
The variability of pectin substances content in the bark of Siberian larch (Larix sibirica Ledeb.) and Daurian larch (Larix gmelinii (Rupr.) on the territory of Middle and Eastern Siberia was studied. The content of pectins in the barks of Siberian larch and Daurian larch at a height of 1.3 m averages 4–5%. The bark of the whole tree trunk contains 8–9%
Galina Vasilyevna Permyakova, Antonina Aleksandrovna Aniskina   +1 more
openaire   +1 more source

Palaeoenvironmental and climatic changes from the lateglacial of the Saalian to the Late Weichselian in central Poland: a multiproxy study from Józefów

Boreas, EarlyView.
Józefów site is a case study which provides a detailed record of environmental and climate changes and confirms the main traces of the landscape morphogenesis of the Late Pleistocene established in central‐eastern Europe. This study presents a multiproxy reconstruction of palaeoenvironment under variable climatic conditions from the retreat of the ...
Aleksandra Majecka, Jacek Forysiak, Ryszard Borówka, Andreas Börner, Łukasz Bujak, Leszek Marks, Radosław Mieszkowski, Piotr Moska, Daniel Okupny, Małgorzata Pisarska‐Jamroży, Renata Stachowicz‐Rybka, Krzysztof Stachowicz   +11 more
wiley   +1 more source

Larix an Archaic Genus

, 2023
Gymnosperms are the plants of the remarkable evolutionary history; they have the great empire in the Mesozoic era, however at the beginning of the cenozoic, one can see the degradation in the vegetation (decline of the gymnosperm). In recent era the gymnosperms are presented by the cycadales (only 11 genera very endemic distribution) coniferales ...
openaire   +1 more source