Results 31 to 40 of about 85,149 (295)

Application of activity sensors for estimating behavioral patterns

open access: yesWildlife Society Bulletin, 2016
The increasing use of Global Positioning System (GPS) collars in habitat selection studies provides large numbers of precise location data points with reduced field effort.
Caleb P. Roberts   +2 more
doaj   +1 more source

Seasonal measurements of total OH reactivity fluxes, total ozone loss rates and missing emissions from Norway spruce in 2011 [Discussion paper] [PDF]

open access: yes, 2012
Numerous reactive volatile organic compounds (VOCs) are emitted into the atmosphere by vegetation. Most biogenic VOCs are highly reactive towards the atmosphere's most important oxidant, the hydroxyl (OH) radical.
Bonn, Boris   +5 more
core   +1 more source

Diel Surface Temperature Range Scales with Lake Size. [PDF]

open access: yesPLoS ONE, 2016
Ecological and biogeochemical processes in lakes are strongly dependent upon water temperature. Long-term surface warming of many lakes is unequivocal, but little is known about the comparative magnitude of temperature variation at diel timescales, due ...
R Iestyn Woolway   +27 more
doaj   +1 more source

Towards a global interpretation of dual nitrate isotopes in surface waters [PDF]

open access: yes, 2019
Modern anthropogenic activities have significantly increased nitrate (NO3-) concentrations in surface waters. Stable isotopes (delta N-15 and delta O-18) in NO3- offer a tool to deconvolute some of the human-made changes in the nitrogen cycle.
Boeckx, Pascal   +2 more
core   +2 more sources

Using thermosensitive radiotelemetry to document rest and activity in a semifossorial rodent

open access: yesWildlife Society Bulletin, 2011
We present a protocol for using temperature records from external thermosensitive radiotransmitters recorded by data‐logging receivers to identify bouts of rest and activity in mammals that sleep in a curled‐up posture.
Stefanie E. Lazerte, Donald L. Kramer
doaj   +1 more source

Diel Oscillation of Microbial Gene Transcripts Declines With Depth in Oligotrophic Ocean Waters

open access: yesFrontiers in Microbiology, 2019
Diel oscillations in primary and secondary production, growth, metabolic activity, and gene expression commonly occur in marine microbial communities in ocean surface waters.
Alice Vislova   +4 more
doaj   +1 more source

Higher measured than modeled ozone production at increased NOx levels in the Colorado Front Range [PDF]

open access: yes, 2017
. Chemical models must correctly calculate the ozone formation rate, P(O3), to accurately predict ozone levels and to test mitigation strategies.
Apel, Eric   +14 more
core   +1 more source

RNA function and phosphorus use by photosynthetic organisms

open access: yesFrontiers in Plant Science, 2013
Phosphorus (P) in RNA accounts for half or more of the total non-storage P in oxygenic photolithotrophs grown in either P-replete or P-limiting growth conditions.
John Albert Raven, John Albert Raven
doaj   +1 more source

Differences in the trophic ecology of micronekton driven by diel vertical migration. [PDF]

open access: yes, 2019
Many species of micronekton perform diel vertical migrations (DVMs), which ultimately contributes to carbon export to the deep sea. However, not all micronekton species perform DVM, and the nonmigrators, which are often understudied, have different ...
Angel M. V.   +6 more
core   +1 more source

Seasonal measurements of total OH reactivity emission rates from Norway spruce in 2011 [PDF]

open access: yes, 2013
Numerous reactive volatile organic compounds (VOCs) are emitted into the atmosphere by vegetation. Most biogenic VOCs are highly reactive towards the atmosphere's most important oxidant, the hydroxyl (OH) radical.
Bonn, Boris   +5 more
core   +2 more sources

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