Results 41 to 50 of about 15,044,355 (406)

On explaining the F-region seasonal anomaly in terms of composition changes in the lower atmosphere [PDF]

open access: yes, 1970
Seasonal anomaly of F-region explained in terms of composition changes in lower ...
Chandra, S., Stubbe, P.
core   +2 more sources

Seasonal Changes in Bird Species and Feeding Guilds along Elevational Gradients of the Central Himalayas, Nepal

open access: yesPLoS ONE, 2016
The Himalayas are a global hotspot for bird diversity with a large number of threatened species, but little is known about seasonal changes in bird communities along elevational gradients in this region.
H. Katuwal   +7 more
semanticscholar   +1 more source

Seasonal changes in sperm parameters, testicular histology and circulating levels of reproductive hormones in the male African straw-colored fruit bat (Eidolon helvum)

open access: yesAsian Pacific Journal of Reproduction, 2020
Objective: To investigate seasonal changes in some reproductive characteristics of the male African straw-colored fruit bat [Eidolon (E.) helvum] in a tropical rain forest area of South-East Nigeria.
Clifford N Abiaezute   +4 more
doaj   +1 more source

Geographic muting of changes in the Arctic sea ice cover [PDF]

open access: yes, 2010
The seasonal cycle in Arctic sea ice extent is asymmetric. Its amplitude has grown in recent decades as the ice has retreated more rapidly in summer than in winter.
Eisenman, Ian
core   +1 more source

The role of the hypothalamic-pituitary-adrenal axis in modulating seasonal changes in immunity.

open access: yesPhysiological Genomics, 2016
Seasonal changes in environmental conditions are accompanied by significant adjustment of multiple biological processes. In temperate regions, the day fraction, or photoperiod, is a robust environmental cue that synchronizes seasonal variations in ...
Kamau Pierre   +2 more
semanticscholar   +1 more source

CARBON STOCK GROWTH IN A SECONDARY ATLANTIC FOREST [PDF]

open access: yesRevista Árvore, 2019
The secondary Atlantic forests play an important role in the context of climate change, acting as a carbon sink for the atmosphere. However, these forests can become a carbon source in case of increased tree mortality.
Paulo Henrique Villanova   +6 more
doaj   +1 more source

Diel and Seasonal Changes in the Abundance and Diversity of the Infralittoral Fish Community in the Eastern Central Adriatic

open access: yesJournal of Marine Science and Engineering, 2023
The fish species undergo diel and seasonal changes in coastal (littoral) ocean zones. Many factors affect these seasonal and diel patterns, thus it is difficult to determine which are the most important.
Alen Soldo, Dejan Paliska
doaj   +1 more source

Remote sensing of seasonal changes and disturbances in mangrove forest: a case study from South Florida

open access: yes, 2016
Knowledge of the spatial and temporal changes caused by episodic disturbances and seasonal variability is essential for understanding the dynamics of mangrove forests at the landscape scale, and for building a baseline that allows detection of the ...
Keqi Zhang, B. Thapa, M. Ross, D. Gann
semanticscholar   +1 more source

The changing seasonal climate in the Arctic [PDF]

open access: yesScientific Reports, 2013
Ongoing and projected greenhouse warming clearly manifests itself in the Arctic regions, which warm faster than any other part of the world. One of the key features of amplified Arctic warming concerns Arctic winter warming (AWW), which exceeds summer warming by at least a factor of 4.
E. C. van der Linden, Richard Bintanja
openaire   +2 more sources

Seasonal Patterns of Peak Expiratory Flow Rate in Young Healthy Individuals

open access: yesJournal of Karnali Academy of Health Sciences, 2023
Background: The seasonal changes are associated with changes in pulmonary functions including Peak Expiratory Flow Rate (PEFR). These changes are different among different population and location.
Narayan Mahotra   +2 more
doaj  

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