scholarly journals Ecological-Historical Stages of Marine Vegetation Formation in the European Zone

Keyword(s):  
2014 ◽  
Vol 501-504 ◽  
pp. 359-367
Author(s):  
Feng Zhou ◽  
Kai Zhang ◽  
Ying Chun Tang

This paper summarizes and analyzes the basic concepts and ecological protection mechanism for expansion geotechnical slope failure mechanism and the resulting impact on the shallow, traction engineering properties such as analysis, proposed ecological slope of expansive soil slope mechanism of action: vegetation system by improving internal slope soil moisture and temperature changes affect the atmosphere and thus effectively reduce the depth. Vegetation root through reinforced anchoring, delay time and improving soil hydration ductility such as the role played good strength enhancement. Vegetation formation can effectively improve the damaged outer slope interface morphology, to restore the ecological environment and landscape effect. Integrating the past experience on expansive soil slope treatment, this paper provide a slope treatment method used in Nanning metro Tunli section, these will provide reference for the expansive soil slope ecological management.


Circulation ◽  
2015 ◽  
Vol 131 (6) ◽  
pp. 571-581 ◽  
Author(s):  
Chiau-Jing Jung ◽  
Chiou-Yueh Yeh ◽  
Ron-Bin Hsu ◽  
Chii-Ming Lee ◽  
Chia-Tung Shun ◽  
...  

Rodriguésia ◽  
2018 ◽  
Vol 69 (2) ◽  
pp. 429-440 ◽  
Author(s):  
Josimar Külkamp ◽  
Gustavo Heiden ◽  
João Ricardo Vieira Iganci

Abstract The flora of the subtropical highland grasslands in Southern Brazil, locally known as Campos de Cima da Serra, is within the Atlantic Forest hotspot, and has being highlighted by its richness, having around 25% of endemic plants. Those formations require specific studies to estimate its species richness and to protect its natural resources. This study aimed to map and to analyze the distribution of endemic taxa from these grasslands based on available herbarium collections databases as sources for highlighting important taxonomic groups for future studies. We verified how much of those endemic taxa are inside protected areas, and recognized the most important taxa and areas for future studies. All the data about each endemic taxon was obtained through visiting herbaria, online databases, collecting expeditions and published references. Distribution maps for endemic species were prepared. As the main result, we describe and map the distribution of the endemic flora of this species rich vegetation formation and highlight the threatened taxa as priority for future taxonomic and conservation studies. Our results also point out the central-west of Santa Catarina and central Paraná states as priority areas for future studies considering its high diversity of taxa.


1991 ◽  
Vol 17 (2) ◽  
pp. A212 ◽  
Author(s):  
Sven Rohmann ◽  
Peter Jensen ◽  
Harald Darius ◽  
Thomas Makowski ◽  
Raimund Erbel ◽  
...  

2013 ◽  
Vol 29 (5) ◽  
pp. 427-438 ◽  
Author(s):  
Jannes Muenchow ◽  
Simon Hauenstein ◽  
Achim Bräuning ◽  
Rupert Bäumler ◽  
Eric Frank Rodríguez ◽  
...  

Abstract:Studying species turnover along gradients is a key topic in tropical ecology. Crucial drivers, among others, are fog deposition and soil properties. In northern Peru, a fog-dependent vegetation formation develops on mountains along the hyper-arid coast. Despite their uniqueness, these fog oases are largely uninvestigated. This study addresses the influence of environmental factors on the vegetation of these unique fog oases. Accordingly, vegetation and soil properties were recorded on 66 4 × 4-m plots along an altitudinal gradient ranging from 200 to 950 m asl. Ordination and modelling techniques were used to study altitudinal vegetation belts and floristic composition. Four vegetation belts were identified: a low-elevation Tillandsia belt, a herbaceous belt, a bromeliad belt showing highest species richness and an uppermost succulent belt. Different altitudinal levels might reflect water availability, which is highest below the temperature inversion at around 700 m asl. Altitude alone explained 96% of the floristic composition. Soil texture and salinity accounted for 88%. This is in contrast with more humid tropical ecosystems where soil nutrients appear to be more important. Concluding, this study advances the understanding of tropical gradients in fog-dependent and ENSO-affected ecosystems.


PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261429
Author(s):  
Ekaterina M. Koltsova ◽  
Maria A. Sorokina ◽  
Alexandra S. Pisaryuk ◽  
Nikita M. Povalyaev ◽  
Anastasia A. Ignatova ◽  
...  

Background Coagulation system is heavily involved into the process of infective endocarditis (IE) vegetation formation and can facilitate further embolization. In this study we aimed to assess the coagulation and platelet state in IE implementing a wide range of standard and global laboratory assays. We also aim to determine whether prothrombotic genetic polymorphisms play any role in embolization and mortality in IE patients. Methods 37 patients with IE were enrolled into the study. Coagulation was assessed using standard coagulation assays (activated partial thromboplastin time (APTT), prothrombin, fibrinogen, D-dimer concentrations) and integral assays (thromboelastography (TEG) and thrombodynamics (TD)). Platelet functional activity was estimated by flow cytometry. Single nuclear polymorphisms of coagulation system genes were studied. Results Fibrinogen concentration and fibrinogen-dependent parameters of TEG and TD were increased in patients indicating systemic inflammation. In majority of patients clot growth rate in thrombodynamics was significantly shifted towards hypercoagulation in consistency with D-dimers elevation. However, in some patients prothrombin, thromboelastography and thrombodynamics were shifted towards hypocoagulation. Resting platelets were characterized by glycoprotein IIb-IIIa activation and degranulation. In patients with fatal IE, we observed a significant decrease in fibrinogen and thrombodynamics. In patients with embolism, we observed a significant decrease in the TEG R parameter. No association of embolism or mortality with genetic polymorphisms was found in our cohort. Conclusions Our findings suggest that coagulation in patients with infective endocarditis is characterized by general hypercoagulability and platelet pre-activation. Some patients, however, have hypocoagulant coagulation profile, which presumably can indicate progressing of hypercoagulation into consumption coagulopathy.


2012 ◽  
pp. 1370-1372
Author(s):  
В.С. ИПАТОВ ◽  
М.Ю. ТИХОДЕЕВА ◽  
В.X. ЛЕБЕДЕВА

Olga Ivanovna Sumina, the head of the Department of Geobotany and Plant Ecology of St. Petersburg State University, has celebrated her anniversary. Her scientific interests include research of vegetation formation processes on technogenic habitats of the northern territories of Russia. Colleagues, post-graduate students and students pass their sincere greetings on Olga Ivanovnas anniversary.


2016 ◽  
Vol 538 ◽  
pp. 355-362 ◽  
Author(s):  
Gao-Lin Wu ◽  
Dong Wang ◽  
Yu Liu ◽  
Hong-Min Hao ◽  
Nu-Fang Fang ◽  
...  

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