Results 41 to 50 of about 96,592 (176)

Ecological genetics of Juglans nigra: Differences in early growth patterns of natural populations

open access: yesEcology and Evolution, 2021
Many boreal and temperate forest tree species distributed across large geographic ranges are composed of populations adapted to the climate they inhabit.
Lauren Onofrio   +2 more
doaj   +1 more source

Properties of mm galaxies: Constraints from K-band blank fields [PDF]

open access: yes, 2002
We have used the IRAM Plateau de Bure mm interferometer to locate with subarcsecond accuracy the dust emission of three of the brightest 1.2mm sources in the NTT Deep Field (NDF) selected from our 1.2mm MAMBO survey at the IRAM 30m telescope.
Arnouts S.   +19 more
core   +4 more sources

Speciation with gene flow

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Biodiversity is threatened by human activities, with extinction debt accumulating rapidly. Many of these activities change the connectivity of populations, fragmenting existing population systems or bringing previously isolated populations or species into contact.
Zhiqin Long   +7 more
wiley   +1 more source

Search for radiative pumping lines of OH masers: I. The 34.6um absorption line towards 1612 MHz OH maser sources [PDF]

open access: yes, 2004
The 1612 MHz hydroxyl maser in circumstellar envelopes has long been thought to be pumped by 34.6um photons. Only recently, the Infrared Space Observatory has made possible spectroscopic observations which enable the direct confirmation of this pumping ...
A. M. Sobolev   +57 more
core   +1 more source

The energetic consequences of oxygen fluxes in a coral reef fish

open access: yesFunctional Ecology, EarlyView.
Abstract Ocean warming elevates metabolic rates in marine ectotherms but often constrains energetic resources, causing an imbalance between supply and demand. Transient hypoxia is near‐ubiquitous across the world's coral reefs and may exacerbate this imbalance, yet its effects on the energetics of reef fishes remain poorly understood. In this study, we
Daniel M. Ripley   +3 more
wiley   +1 more source

Multi-wavelength Observations of Dusty Star Formation at Low and High Redshift

open access: yes, 2000
This paper examines what can be learned about high-redshift star formation from the small fraction of high-redshift galaxies' luminosities that is emitted at accessible wavelengths.
Acosta-Pulido J. A.   +15 more
core   +2 more sources

Map and Archival Evidence of the Historical Avulsion of the Brahmaputra River

open access: yesThe Geographical Journal, EarlyView.
Short Abstract One of the world's great rivers, the Brahmaputra, avulsed—changed course—significantly sometime between the dates of 1765 and 1830. These are the dates of surveys by James Rennell (grey) and Richard Wilcox (black), both under the direction of the East India Company; no other surveys between these dates can refine the estimate of the ...
Keith Richards   +2 more
wiley   +1 more source

Selection of geographical factors using the random forest analysis method for developing the site index equation of Pinus densiflora stands in Republic of Korea

open access: yesForest Science and Technology, 2019
This study was conducted to establish reasonable forest management plan by developing site index curves about Pinus densiflora stands that is major species growing in Jeolla-do in Republic of Korea.
Hee-jung Park   +5 more
doaj   +1 more source

OH spectral evolution of oxygen-rich late-type stars

open access: yes, 2004
We investigated the main-line spectral evolution with shell thickness of oxygen rich AGB stars. The study is based on a sample of 30 sources distributed along the IRAS colour-colour diagram.
A. M. Le Squeren   +55 more
core   +3 more sources

The effectiveness of using carbonate isotope measurements of body tissues to infer diet in human evolution: Evidence from wild western chimpanzees (Pan troglodytes verus)* [PDF]

open access: yes, 2015
Changes in diet throughout hominin evolution have been linked with important evolutionary changes. Stable carbon isotope analysis of inorganic apatite carbonate is the main isotopic method used to reconstruct fossil hominin diets; to test its ...
Boesch, Christophe   +3 more
core   +1 more source

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