scholarly journals Some geo-botanic features of the Kurile Islands

2015 ◽  
Vol 19 (2) ◽  
pp. 33-39
Author(s):  
Kirill Ganzei
Keyword(s):  
Spatial Structure ◽  
Volcanic Activity ◽  
Sea Water ◽  
Complex Interactions ◽  
Kurile Islands ◽  
Vegetation Zones ◽  
Exogenous Factors

Abstract Results of many years research of geo-botanic of the Kurile Islands are presented in article. Vegetation spatial structure of the Kurile Islands is conditioned by complex interactions of endogenous and exogenous factors. Meridional extension for almost 1200 km determines a significant climatic differenciation within archipelago. It is resulted in changes of vertical vegetation zones in the different regions of Kurile Islands. System of hot and cold currents in the adjacent sea water is the factor of asymmetry of vegetation. Special traits of archipelago are determined by the volcanic activity

Ecology of cultivable yeasts in pristine forests in northern Patagonia (Argentina) influenced by different environmental factors

2014 ◽  
Vol 60 (6) ◽  
pp. 371-382 ◽  
Author(s):  
María Cecilia Mestre ◽  
Sonia Fontenla ◽  
Carlos A. Rosa
Keyword(s):  
Environmental Factors ◽  
Volcanic Activity ◽  
Forest Site ◽  
Nothofagus Pumilio ◽  
Species Accumulation Curves ◽  
Environmental Characteristics ◽  
Factors Affecting ◽  
Complex Interactions ◽  
Forest Sites ◽  
Nothofagus Antarctica

Environmental factors influencing the occurrence and community structure of soil yeasts in forests are not well studied. There are few studies dedicated to Southern Hemisphere soil yeasts populations and even fewer focused on temperate forests influenced by volcanic activity. The present work aimed to study the ecology of soil yeast communities from pristine forests influenced by different environmental factors (precipitation, physicochemical properties of soil, tree species, soil region, and season). The survey was performed in 4 northern Patagonian forests: 2 dominated by Nothofagus pumilio and 2 by Nothofagus antarctica. Yeast communities were described with ecological indices and species accumulation curves, and their association with environmental characteristics was assessed using multivariate analysis. Each forest site showed a particular arrangement of species as a result of environmental characteristics, such as dominant plant species, nutrient availability, and climatic characteristics. Cryptococcus podzolicus was most frequently isolated in nutrient-rich soils, Trichosporon porosum dominated cold mountain forests with low nutrient and water availability in soil, and capsulated yeasts such as Cryptococcus phenolicus dominated forest sites with low precipitation. The present work suggests that environmental factors affecting yeast communities may not be the current soil characteristics but the result of complex interactions of factors including natural disturbances like volcanic activity.

scholarly journals 2010 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory

2014 ◽  
Author(s):  
Christina A. Neal ◽  
Julie Herrick ◽  
O.A. Girina ◽  
Marina Chibisova ◽  
Alexander Rybin ◽  
...  
Keyword(s):  
Volcanic Activity ◽  
Volcano Observatory ◽  
Kurile Islands

scholarly journals Monitoring of volcanic activity in the Kurile Islands: 15 years of work SVERT group

2018 ◽  
Vol 2 (4) ◽  
pp. 259-266 ◽  
Author(s):  
A.V. Rybin ◽  
◽  
M.V. Chibisova ◽  
A.V. Degterev ◽  
◽  
...  
Keyword(s):  
Volcanic Activity ◽  
Kurile Islands

scholarly journals An emerging role for comprehensive proteome analysis in human pregnancy research

Reproduction ◽  
2005 ◽  
Vol 129 (6) ◽  
pp. 685-696 ◽  
Author(s):  
Renu Shankar ◽  
Neil Gude ◽  
Fiona Cullinane ◽  
Shaun Brennecke ◽  
Anthony W Purcell ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Disease Process ◽  
Proteome Analysis ◽  
Biological Molecules ◽  
Specific Expression ◽  
Disease Biomarkers ◽  
Complex Interactions ◽  
Physiological Processes ◽  
Exogenous Factors ◽  
Pregnancy Disorders

Elucidation of underlying cellular and molecular mechanisms is pivotal to the comprehension of biological systems. The successful progression of processes such as pregnancy and parturition depends on the complex interactions between numerous biological molecules especially within the uterine microenvironment. The tissue- and stage-specific expression of these bio-molecules is intricately linked to and modulated by several endogenous and exogenous factors. Malfunctions may manifest as pregnancy disorders such as preterm labour, pre-eclampsia and fetal growth restriction that are major contributors to maternal and perinatal morbidity and mortality. Despite the immense amount of information available, our understanding of several aspects of these physiological processes remains incomplete. This translates into significant difficulties in the timely diagnosis and effective treatment of pregnancy-related complications. However, the emergence of powerful mass spectrometry-based proteomic techniques capable of identifying and characterizing multiple proteins simultaneously has added a new dimension to the field of biomedical research. Application of these high throughput methodologies with more conventional techniques in pregnancy-related research has begun to provide a novel perspective on the biochemical blueprint of pregnancy and its related disorders. Further, by enabling the identification of proteins specific to a disease process, proteomics is likely to contribute, not only to the comprehension of the underlying pathophysiologies, but also to the clinical diagnosis of multifactorial pregnancy disorders. Although the application of this technology to pregnancy research is in its infancy, characterization of the cellular proteome, unearthing of functional networks and the identification of disease biomarkers can be expected to significantly improve maternal healthcare in the future.

scholarly journals 2007 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory

2011 ◽  
Author(s):  
Robert G. McGimsey ◽  
Christina A. Neal ◽  
James P. Dixon ◽  
Nataliya Malik ◽  
Marina Chibisova
Keyword(s):  
Volcanic Activity ◽  
Volcano Observatory ◽  
Kurile Islands

Carbon dioxide emission through soil respiration in a secondary mangrove forest of eastern Thailand

2009 ◽  
Vol 25 (4) ◽  
pp. 393-400 ◽  
Author(s):  
Sasitorn Poungparn ◽  
Akira Komiyama ◽  
Aki Tanaka ◽  
Tanuwong Sangtiean ◽  
Chatree Maknual ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Soil Respiration ◽  
Soil Temperature ◽  
Mangrove Forest ◽  
Sea Water ◽  
Carbon Dioxide Emission ◽  
Mangrove Forests ◽  
Vegetation Zones ◽  
Dry Seasons ◽  
Wet And Dry Seasons

Abstract:Carbon dioxide emission through soil respiration is an important component of the carbon balance in forest ecosystems. However, little information is available on the rates of soil respiration in mangrove forests. We studied the rate of soil respiration in a secondary mangrove forest in eastern Thailand on an estuary of the Trat River during both the wet and dry seasons. A study site of 40 × 110 m was established and a series of vegetation zones identified: Sonneratia, Avicennia, Rhizophora and Xylocarpus, in order of increasing elevation inland. Soil respiration was measured during low tide, using an infrared gas analyser connected to a respiratory chamber, by excluding the respiration of above-ground roots from the chamber. At least 19 measurements were performed in each zone for each season. The rate of soil respiration significantly increased with increasing soil temperature. The soil temperature which was usually lower than that of sea water showed a trend that decreased with distance from the river in both wet and dry seasons. The relative land elevation causes different periods of inundation among the vegetation zones. The period was longest in the Sonneratia zone located on the river fringe, and became shorter moving inland. Thus, the elevation and relevant period of inundation are considered to be causal factors warming the soil. Consequently, the difference in soil temperature caused significantly different rates of soil respiration among the vegetation zones in the mangrove forest. Overall, the average rate of soil respiration ranged from 0.456 to 0.876 μmol CO2 m−2 s−1, supporting the view that mangrove forests have lower rates of soil respiration than do upland forests.

scholarly journals 2008 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory

2011 ◽  
Author(s):  
Christina A. Neal ◽  
Robert G. McGimsey ◽  
James P. Dixon ◽  
Cheryl E. Cameron ◽  
Anton A. Nuzhdaev ◽  
...  
Keyword(s):  
Volcanic Activity ◽  
Volcano Observatory ◽  
Kurile Islands

scholarly journals Pleistocene volcaniclastic units from North-Eastern Sicily (Italy): new evidence for calc-alkaline explosive volcanism in the Southern Tyrrhenian Sea

2016 ◽  
Vol 67 (4) ◽  
pp. 371-389 ◽  
Author(s):  
Marcella Di Bella ◽  
Francesco Italiano ◽  
Giuseppe Sabatino ◽  
Alessandro Tripodo ◽  
Angela Baldanza ◽  
...  
Keyword(s):  
Volcanic Activity ◽  
Sea Water ◽  
Explosive Volcanism ◽  
Middle Pleistocene ◽  
Tyrrhenian Sea ◽  
Calc Alkaline ◽  
Interaction Field ◽  
Field Investigations ◽  
New Information ◽  
Southern Tyrrhenian Sea

Abstract A well-preserved volcaniclastic sequence crops out in Pleistocene marine sediments along the Tyrrhenian coastline of the Calabrian-Peloritani arc (Sicily, Italy), testifying the occurrence of Lower-Middle Pleistocene volcanic activity in Southern Tyrrhenian Sea. The presence of dominant highly vesicular and minor blocky glassy particles indicates that the volcanic clasts were originated by explosive events related to the ascent and violent emission of volatile-rich magmas accompanied by and/or alternated with hydromagmatic fragmentation due to magma-sea water interaction. Field investigations and sedimentological features of the studied volcaniclastic units suggest a deposition from sediment-water density flows. The chemical classification of the pumice clasts indicates prevalent rhyolitic and dacitic compositions with calc-alkaline to high-K calc-alkaline affinity. The geochemical features of immobile trace elements together with the presence of orthopyroxene are indicative of a provenance from an arc-type environment. The age (from 980-910 to 589 ka), the chemical composition and the evidence of subaerial explosive volcanic activity constrain the origin nature and temporal evolution of the arc-type volcanism in the Southern Tyrrhenian domain. Finally, the new information here provided contribute to a better understanding of the temporal geodynamic evolution of this sector of the Mediterranean domain.

scholarly journals 2006 Volcanic Activity in Alaska, Kamchatka, and the Kurile Islands: Summary of Events and Response of the Alaska Volcano Observatory

2008 ◽  
Author(s):  
Christina A. Neal ◽  
Robert G. McGimsey ◽  
James P. Dixon ◽  
Alexander Manevich ◽  
Alexander Rybin
Keyword(s):  
Volcanic Activity ◽  
Volcano Observatory ◽  
Kurile Islands
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