Results 251 to 260 of about 12,432 (271)

A new sledge microtome to combine wood anatomy and tree-ring ecology

IAWA Journal, 2015
Based on the Reichert Om E microtome a more sophisticated, nevertheless solely mechanically operated microtome was developed enabling to section specimens of various forms and sizes. The materials used and the special construction of the microtome resulted in a higher stability of the moving parts whilst simultaneously reducing weight.
H. Gärtner, S. Lucchinetti, F.H. Schweingruber   +2 more
openaire   +1 more source

Wood Anatomy and Tree-Ring Structure and Their Importance for Tropical Dendrochronology

2010
In Amazonian floodplain forests, the flood pulse results in an ­alternating aquatic and terrestrial phase per year. Consequentially, trees react with cambial ­dormancy, resulting in differing wood anatomical structures that appear as rings in the cross-section of the trees stem.
Worbes, M., Fichtler, E.
openaire   +2 more sources

Anatomy of the vessel network within and between tree rings of Fraxinus lanuginosa (Oleaceae)

American Journal of Botany, 2004
The three‐dimensional (3‐D) arrangement of vessels and the vessel‐to‐vessel connections in the secondary xylem of the stem of the ring‐porous hardwood tree Fraxinus lanuginosa were studied in series of thick transverse sections with epifluorescence microscope and confocal laser scanning microscope. Vessels were traced in sequential sections, and vessel
Peter B, Kitin, Tomoyuki, Fujii, Hisashi, Abe, Ryo, Funada   +3 more
openaire   +2 more sources

The “blue ring”: anatomy and formation hypothesis of a new tree-ring anomaly in conifers

Trees, 2014
Key message Double-stained microsections from high altitude Pinus nigra wood cores highlighted unlignified latewood cells possibly linked to abrupt temperature reduction at the end of the growing season. More consolidated detection could increase their role in dendroecology. Abstract Cambial activity and wood formation are influ- enced by environmental
PIERMATTEI, ALMA, A. Crivellaro, M. Carrer, URBINATI, Carlo   +3 more
openaire   +3 more sources

Exploring tree-ring anatomy to improve hydroclimate reconstructions in Northern Europe

The extreme European summer heat-droughts of 2003 and 2018, compounded by the threat of continued climate change, highlight the need to better understand the frequency, severity and seasonality of such events. The widths of annual tree rings currently provide the most detailed and spatially complete proxy information of European hydroclimate of the ...
Kristina Seftigen, Georg von Arx, Jesper Björklund   +2 more
openaire   +1 more source

Variations of Wood Anatomy and δ13C Within-Tree Rings of Coastal Pinus Pinaster Showing Intra-Annual Density Fluctuations

IAWA Journal, 2007
We investigated the variation of wood anatomical characteristics and carbon isotopic composition of tree rings showing intra-annual density fluctuations (IADFs) in plants of Pinus pinaster Ait. growing at a coastal plantation in Tuscany (Italy).
DE MICCO, VERONICA, Saurer, M, ARONNE, GIOVANNA, Tognetti, R, Cherubini, P.   +4 more
openaire   +3 more sources

The response of δ13C, δ18O and cell anatomy of Larix gmelinii tree rings to differing soil active layer depths

Dendrochronologia, 2015
Abstract Global warming is most pronounced in high-latitude regions by altering habitat conditions and affecting permafrost degradation, which may significantly influence tree productivity and vegetation changes. In this study, by applying a “space-for-time” approach, we selected three plots of Larix gmelinii forest from a continuous permafrost zone ...
Bryukhanova, Marina V., Fonti, Patrick, Kirdyanov, Alexander V., Siegwolf, Rolf T.W., Saurer, Matthias, Pochebyt, Natalia P., Churakova, Olga, Prokushkin, Anatoly S.   +7 more
openaire   +1 more source

Tree-ring wood anatomy and stable isotopes show structural and functional adjustments in olive trees under different water availability

Plant and Soil, 2013
Olive tree (Olea europaea L.) is a drought-tolerant tree species cultivated in Mediterranean-type environments. Although it is tolerant to drought, dry conditions decrease its productivity. A thorough analysis of the hydraulic architecture and wood anatomical plasticity, as well as of their physiological significance, is needed to understand how olive ...
Rossi, L, Sebastiani, L, TOGNETTI, Roberto, d’Andria, R, Morelli, G, Cherubini, P.   +5 more
openaire   +1 more source

Fennoscandian AND Yamalian tree-ring anatomy shows a warmer modern than medieval climate

Earth system models and various climate proxy sources indicate that global warming is unprecedented during at least the Common Era. However, tree-ring proxies often estimate temperatures during the Medieval Climate Anomaly (950–1250 CE) to be similar, or exceed, those recorded for the past century.
Jesper Björklund, Kristina Seftigen, Markus Stoffel, Marina V Fonti, David C Frank, Sven Kottlow, Jan Esper, Patrick Fonti, Hugues Goosse, Håkan Grudd, Björn E Gunnarson, Rashit Hantemirov, Stefan Klesse, Vladimir Kukarskih, Daniel Nievergelt, Elena Pellizzari, Marco Carrer, Georg von Arx   +17 more
openaire   +1 more source

What tree rings can tell us about the competition between trees and lianas? A case study based on growth, anatomy, density, and carbon accumulation

Dendrochronologia, 2017
In tropical forest, landscape fragmentation and the consequent degradation of disturbed forests increase the incidence of light and dry hot winds, causing a disturbance on natural regeneration. Under these conditions, lianas (woody vines) development is stimulated instead of other species, which are more suited to mature forest and under less influence
Venegas-González, Alejandro, Brancalion, Pedro H.S., Albiero Junio, Alci, Peres Chagas, Matheus, Anholetto Junior, Claudio R., Chaix, Gilles, Tomazello Filho, Mario   +6 more
openaire   +2 more sources