Results 11 to 20 of about 2,951,677 (344)

Wood density within Norway spruce stems

Silva Fennica, 2008
We studied the variation in average wood density of annual rings, earlywood density, and latewood density in addition to ring width and latewood percentage within Norway spruce (Picea abies (L.) Karst.) stems from the pith to the bark, and from the ...
Jyske, Tuula, Mäkinen, Harri, Saranpää, Pekka   +2 more
doaj   +1 more source

Findings from an in-Depth Annual Tree-Ring Radiocarbon Intercomparison [PDF]

Radiocarbon, 2020
ABSTRACTThe radiocarbon (14C) calibration curve so far contains annually resolved data only for a short period of time. With accelerator mass spectrometry (AMS) matching the precision of decay counting, it is now possible to efficiently produce large datasets of annual resolution for calibration purposes using small amounts of wood.
Wacker, L, Scott, EM, Bayliss, A, Brown, D, Bard, E, Bollhalder, S, Friedrich, M, Capano, M, Cherkinsky, A, Chivall, D, Culleton, BJ, Dee, MW, Friedrich, R, Hodgins, GWL, Hogg, A, Kennett, DJ, Knowles, TDJ, Kuitems, M, Lange, TE, Miyake, F, Nadeau, M-J, Nakamura, T, Naysmith, JP, Olsen, J, Omori, T, Petchey, F, Philippsen, B, Ramsey, CB, Prasad, GVR, Seiler, M, Southon, J, Staff, R, Tuna, T   +32 more
openaire   +10 more sources

Occurrence of annual growth rings in Rhizophora mangle in a region with low climate seasonality

Anais da Academia Brasileira de Ciências, 2016
The formation of annual growth rings has been confirmed for several mangrove species in the last decade, among which is the Rhizophora mangle. However, the record of annual rings for this species was made in a region with high hydric seasonality, a ...
BRUNNA T. SOUZA, GUSTAVO C.D. ESTRADA, MÁRIO L.G. SOARES, CÁTIA H. CALLADO   +3 more
doaj   +1 more source

Seasonality Estimation of Archaeological Sites Basing on Fish Bone Remains. The Case of Eneolithic Workshop Site Fofanovo XIII in Lake Onega

Поволжская археология, 2022
Excavations of the Eneolithic workshop site for making stone chopping tools the Fofanovo XIII on the western shore of Lake Onega (second half of the IV Millennium calBC) provided representative and faunistic assemblage consisting of relatively well ...
Askeyev Igor V. , Tarasov Alexey Yu. , Shaymuratova Dilyara N., Askeyev Arthur O. , Monakhov Sergey P., Askeyev Oleg V.   +5 more
doaj   +1 more source

Nonannual tree rings in a climate-sensitive Prioria copaifera chronology in the Atrato River, Colombia [PDF]

, 2017
In temperate climates, tree growth dormancy usually ensures the annual nature of tree rings, but in tropical environments, determination of annual periodicity can be more complex.
Andreu-Hayles, Laia, del Valle, Jorge I., Gonzalez, Paula L. M., Herrera-Ramirez, David, Santos, Guaciara M.   +4 more
core   +1 more source

Relating Agulhas leakage to the Agulhas Current retroflection location [PDF]

, 2009
The relation between the Agulhas Current retroflection location and the magnitude of Agulhas leakage, the transport of water from the Indian to the Atlantic Ocean, is investigated in a high-resolution numerical ocean model.
Barron, C.N., biastoch, A, De Ruijter, W.P.M., Van Leeuwen, P. J., Van Sebille, E., Vossepoel, F.C.   +5 more
core   +2 more sources

Age, growth rate, and otolith growth of polar cod (Boreogadus saida) in two fjords of Svalbard, Kongsfjorden and Rijpfjorden

Oceanologia, 2017
This work presents biological information for polar cod (Boreogadus saida) collected with a Campelen 1800 shrimp bottom trawl in Kongsfjorden (two stations located in the inner part of the fjord adjacent to the glacier) and Rijpfjorden (one station at ...
Dariusz P. Fey, Jan M. Węsławski
doaj   +1 more source

Transition in viscoelastic properties within successive annual rings of radiata pine (Pinus radiata)

Journal of Wood Science, 2023
Dynamic mechanical analysis (DMA) measurements of water-saturated radiata pine wood in the temperature range from 0 ℃ to 100 ℃ were focused to clarify the transition in viscoelastic properties within successive annual rings.
Hiroaki Horiyama, Keisuke Kojiro, Yuzo Furuta   +2 more
doaj   +1 more source

Cutting tree rings into time slices: How intra-annual dynamics of wood formation help decipher the space-for-time conversion.

New Phytologist, 2021
Tree-ring anatomy, microdensity and isotope records provide valuable intra-annual information. However, extracting signals at that scale is challenged by the complexity of xylogenesis, where two major processes, cell enlargement and wall thickening ...
Gonzalo Pérez-de-Lis, C. Rathgeber, Laura Fernández‐de‐Uña, S. Ponton   +3 more
semanticscholar   +1 more source

Radiocarbon releases from the 2011 Fukushima nuclear accident [PDF]

, 2016
Radiocarbon activities were measured in annual tree rings for the years 2009 to 2015 from Japanese cedar trees (Cryptomeria japonica) collected at six sites ranging from 2.5–38 km northwest and north of the Fukushima Dai-ichi nuclear power plant. The 14C
Cook, Gordon T., Cresswell, Alan, Dunbar, Elaine, Freeman, Stewart P.H.T., Hou, Xiaolin, Jacobsson, Piotr, Kinch, Helen R., Naysmith, Philip, Sanderson, David C.W., Tripney, Brian G., Xu, Sheng   +10 more
core   +2 more sources