scholarly journals The role of macrophytes in wetland ecosystems

2011 ◽  
Vol 34 (4) ◽  
pp. 333-345 ◽  
Author(s):  
Eliska Rejmankova
Keyword(s):  
Wetland Ecosystems

scholarly journals Abundance, diversity and distribution of macrophyte communities in neighboring lakes of different trophic states and morphology in north-central Greece

2011 ◽  
Vol 63 (3) ◽  
pp. 763-774 ◽  
Author(s):  
Chrisoula Pirini ◽  
Vasiliki Karagiannakidou ◽  
Savvas Charitonidis
Keyword(s):  
Environmental Factors ◽  
Aquatic Vegetation ◽  
Floristic Composition ◽  
Diversity Indices ◽  
North Central ◽  
Wetland Ecosystems ◽  
Central Greece ◽  
Clear Differentiation ◽  
Evenness Indices

The role of aquatic vegetation in wetland ecosystems is closely related with their abundance, diversity and distribution, which in turn represents synergy of various environmental factors. The floristic composition of the aquatic vegetation in two neighboring lakes (Vegoritida and Petron) in north-central Greece was investigated by means of 160 relev?s, which were recorded using the Braun-Blanquet method. The analysis of relev?s based on TWINSPAN clustering showed the existence of 10 plant communities from the Lemnetea, Potametea, Phragmito-Magnocaricetea and Juncetea maritimi classes. The most important environmental factors for the vegetation differentiation in the study area, according to the ordination diagram, are light intensity and water depth of the habitats. The plant species diversity was quantified with species richness, Shannon Diversity and evenness indices at a scale of each relev?, with a sampling size of 20 m2. There was a clear differentiation between the relev?s at the more eutrophic Petron Lake and those at Vegoritida Lake. The mean plot diversity was also calculated for each plant community, to enable comparison of the diversity indices among the communities at the plot level.

scholarly journals The soil bacterial and fungal diversity were determined by the stoichiometric ratios of litter inputs: evidence from a constructed wetland

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Yunmei Ping ◽  
Xu Pan ◽  
Wei Li ◽  
Jinzhi Wang ◽  
Lijuan Cui
Keyword(s):  
Nitrogen Isotopes ◽  
Plant Litter ◽  
Ecosystem Functions ◽  
Wetland Ecosystems ◽  
Carbon And Nitrogen ◽  
Soil Microbial ◽  
Plant Litter Decomposition ◽  
Stoichiometry Ratios ◽  
Microbial Diversities

Abstract Plant litter is an important component in wetland ecosystems, and the role of plant litter decomposition is considered to be important for wetland ecosystem functions and services. However, the consequences of litter inputs have seldom been experimentally tested in real ecosystems such as constructed wetlands (CWs). The enriched nutrients in CWs might weaken the role of litter inputs on soil carbon and nitrogen cycling. Here, we conducted a two-month field experiment to examine the effects of litter inputs on the soils in CWs. Our results showed that litter inputs significantly affected soil microbial (bacterial and fungi) diversities and properties (soil total nitrogen and nitrogen isotopes), and litter species with higher stoichiometry ratios, i.e. C/N, C/P and N/P led to higher microbial diversities. However, litter species had no or weak effects on microbial activities (CO2 and CH4 flux) or on the relative abundance of microbial communities, indicating that other environmental factors in such a CW might have stronger effects on those factors than litter inputs. These results highlighted the importance of submerged plant litter in nutrient-rich wetland ecosystems and provide potential tools for managers to improve the ecosystem functions and/or services via altering microbial diversities.

scholarly journals The role of environmental driving factors in historical and projected carbon dynamics of wetland ecosystems in Alaska

2016 ◽  
Vol 28 (6) ◽  
pp. 1377-1395 ◽  
Author(s):  
Zhou Lyu ◽  
Hélène Genet ◽  
Yujie He ◽  
Qianlai Zhuang ◽  
A. David McGuire ◽  
...  
Keyword(s):  
Carbon Dynamics ◽  
Driving Factors ◽  
Wetland Ecosystems

Collective monograph dedicated to the results of 65-year long research of natural and artificial biogeocoenoses under the conditions of steppe by collective of the complex expedition of Oles Honchar Dnipropetrovsk National University

2017 ◽  
Vol 28 (1-2) ◽  
pp. 105-109
Author(s):  
Y. V. Tsaryk ◽  
V. I. Parpan ◽  
V. V. Nykyforov ◽  
I. Y. Tsaryk
Keyword(s):  
Forest Restoration ◽  
Chemical Properties ◽  
Community Research ◽  
Postgraduate Students ◽  
Wetland Ecosystems ◽  
Scientific Staff ◽  
National University ◽  
History Of ◽  
Physical And Chemical

The monograph consists of 13 original articles, considering history of the complex expedition, fundamental data of soil micromorphology, content of heavy metals in it, physical and chemical properties of the soils under the steppe conditions. It is ascertained the role of light structure in the formation of artificial forest plantations; the results of grass community research are given as well. Floral and coenotic structures of wetland ecosystems of the Samara river basin and the water regime of forest and steppe biogeocoenoses of Prysamarya are described. The role of mammals, amphibians, reptiles and butterflies in the structure of steppe biogeocoenoses of Ukraine is characterized. The bases for biogeocoenological ways of forest restoration of devastated lands as well as information about the diversity of Oribatida mites in West Donbas are presented.  The collective monograph in memoriam for Dr. Sci. (Biol.), Prof., Corresponding member of NAS Ukraine A. P. Travleyev, which has passed away in September 2016, is necessary for the scientific staff, lecturers, postgraduate students, biology students, ecologists, and forest, water and agriculture personnel. 

scholarly journals A review on distribution and importance of wetlands in the perspective of India

2020 ◽  
Vol 12 (4) ◽  
pp. 710-720
Author(s):  
Ashish Kumar Arya ◽  
Kamal Kant Joshi ◽  
Archana Bachheti ◽  
Deepti
Keyword(s):  
Geographical Location ◽  
Agricultural Practices ◽  
Wetland Conservation ◽  
National Plan ◽  
Indian Government ◽  
Rapid Urbanization ◽  
Wetland Ecosystems ◽  
Lack Of Information ◽  
National Environmental

Biodiversity is not equally distributed across the world. It depends on the type of various habitats and food availability. In these habitats, wetlands play an import role to increase the biodiversity of the particular area. Many studies have focused on various habitats to conserve biodiversity. However, the wetland studies are very few due to the lack of information on their distribution and importance. The present review focusses on the wetland status and their importance in India. India has vibrant and diverse wetland ecosystems that support immense biodiversity. The wetlands are unique habitats which provide ecological, social and economic values. However, rapid urbanization, industrialization and uncontrolled agricultural practices have pressurized to shrink the wetlands in India. The present paper highlights the wetland habitats in India with their geographical location, distribution, avian species diversity and their significance. The paper also discusses the growing threats like climate change, land-use change and agriculture/ municipal waste to the wetlands and the conservation efforts by Indian government policies, i.e. National Wetland Conservation Programme, National Environmental Policy, and National Plan for conservation of the aquatic ecosystem. In addition, on the basis of previous studies on wetlands,  it is suggested that the role of stakeholders is very much responsible for wetland conservation.

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management

The power of norms to sway fused group members

2018 ◽  
Vol 41 ◽  
Author(s):  
Winnifred R. Louis ◽  
Craig McGarty ◽  
Emma F. Thomas ◽  
Catherine E. Amiot ◽  
Fathali M. Moghaddam
Keyword(s):  
Evolutionary Anthropology ◽  
Normative Systems ◽  
Violent Extremism ◽  
Identity Fusion ◽  
Group Members

AbstractWhitehouse adapts insights from evolutionary anthropology to interpret extreme self-sacrifice through the concept of identity fusion. The model neglects the role of normative systems in shaping behaviors, especially in relation to violent extremism. In peaceful groups, increasing fusion will actually decrease extremism. Groups collectively appraise threats and opportunities, actively debate action options, and rarely choose violence toward self or others.

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