Results 11 to 20 of about 732,533 (207)

Using the International Tree-Ring Data Bank (ITRDB) records as century-long benchmarks for global land-surface models [PDF]

open access: yesGeoscientific Model Development, 2021
The search for a long-term benchmark for land-surface models (LSMs) has brought tree-ring data to the attention of the land-surface modelling community, as tree-ring data have recorded growth well before human-induced environmental changes became ...
J. Jeong   +11 more
doaj   +1 more source

Novel tuneable filter based on MZ and an amplified ring resonator for OFDM networks [PDF]

open access: yes, 1999
IEEE Lasers and Electro-Optics Society. 1999 Annual Meeting. 8-11 November 1999. San Francisco, CAA novel reconfigurable fibre based tuneable filter is proposed.
Vargas Palma, Salvador Elías   +1 more
core   +3 more sources

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

open access: yesRadiocarbon, 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   +32 more
openaire   +10 more sources

FORMATION OF «FALSE ANNUAL RINGS» ON SCALES OF JUVENILE COHO SALMON ONCORHYNCHUS KISUTCH IN LAKE KURAZHECHNOYE (KAMAKOVSKAYA LOWLAND — KAMCHATKA RIVER BASIN)

open access: yesИзвестия ТИНРО, 2019
During spring-summer flood (in mid May — July), transit underyearlings of coho salmon, having or having no scales, migrate to Lake Kurazhechnoye at the lower Kamchatka River, where resident coho salmon never spawn.
V. F. Bugaev   +2 more
doaj   +1 more source

Influence of Growth Ring Number and Width on Elastic Constants of Poplar

open access: yesBioResources, 2023
The objective of this work was to evaluate the effect of growth ring number (specimens including 2, 4, and 6 rings from the bark) and growth ring width on elastic constants in the radial direction of Populus x canadensis, which has not been revealed ...
Murat Aydın, Tuğba Yılmaz Aydın
doaj   +2 more sources

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

open access: yes, 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   +4 more
core   +1 more source

FORMING OF FALSE ANNUAL RINGS ON SCALES OF JUVENILE COHO SALMON ONCORHYNCHUS KISUTCH IN THE UPPER REACHES, FLOODPLAIN OLD WATER BODIES AND LAKES IN THE MIDDLE AND LOWER REACHES OF THE KAMCHATKA RIVER

open access: yesИзвестия ТИНРО, 2019
Structure of scales is investigated for coho salmon juveniles from several sites of their feeding in the Kamchatka River basin, from Pushchino (685 km from the river mouth) to Lake Nerpichye (at the mouth).
V. F. Bugaev, G. V. Bazarkin
doaj   +1 more source

Xylogenesis of Scots Pine in an Uneven-Aged Stand of the Minusinsk Depression (Southern Siberia) [PDF]

open access: yesЖурнал Сибирского федерального университета: Серия Биология, 2020
Tree-ring formation studies are important for assessing the impact of environmental factors on tree growth at intra-seasonal resolution. This information is necessary for understanding plant acclimatization to current and expected climate changes. Little
Marina V. Fonti   +3 more
doaj   +1 more source

Are Dutch Skylarks partial migrants? Ring recovery data and radio-telemetry suggest local coexistence of contrasting migration strategies [PDF]

open access: yes, 2010
In recent years, Skylarks Alauda arvensis have undergone dramatic population declines in many European countries. Evidence exists for deteriorating conditions during the breeding season, but little is known about the situation during the rest of the ...
de Graaf, M.   +4 more
core   +4 more sources

A different interpretation of the annual and semiannual anomalies on the magnetic activity over the Earth [PDF]

open access: yes, 2012
The H component of the magnetic field measured at the terrestrial surface presents several periodic signals caused by changes in the ring current that flows within the terrestrial magnetosphere.
Azpilicueta, Francisco Javier   +1 more
core   +2 more sources

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