scholarly journals Community structures of zooplankton and its relation to environmental factors in five medium reservoirs in Nanjing City

2017 ◽  
Vol 29 (1) ◽  
pp. 216-223 ◽  
Author(s):  
WANG Wenxia ◽  
◽  
CHEN Feizhou ◽  
GU Xiaohong
Keyword(s):  
Environmental Factors ◽  
Community Structures ◽  
Nanjing City

scholarly journals Denitrifying bacterial communities in surface-flow constructed wetlands during different seasons: characteristics and relationships with environment factors

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jia-ming Wei ◽  
Li-juan Cui ◽  
Wei Li ◽  
Yun-mei Ping ◽  
Wan Li
Keyword(s):  
Environmental Factors ◽  
High Throughput Sequencing ◽  
Bacterial Abundance ◽  
Flow Direction ◽  
Denitrifying Bacteria ◽  
Surface Flow ◽  
Strongly Correlated ◽  
Community Structures ◽  
Oxidation Reduction ◽  
Different Seasons

AbstractDenitrification is an important part of the nitrogen cycle and the key step to removal of nitrogen in surface-flow wetlands. In this study, we explored space–time analysis with high-throughput sequencing to elucidate the relationships between denitrifying bacteria community structures and environmental factors during different seasons. Our results showed that along the flow direction of different processing units, there were dynamic changes in physical and chemical indicators. The bacterial abundance indexes (ACEs) in May, August, and October were 686.8, 686.8, and 996.2, respectively, whereas the Shannon-Weiner indexes were 3.718, 4.303, and 4.432, respectively. Along the flow direction, the denitrifying bacterial abundance initially increased and then decreased subsequently during the same months, although diversity tended to increase. The abundance showed similar changes during the different months. Surface flow wetlands mainly contained the following denitrifying bacteria genus: unclassified Bacteria (37.12%), unclassified Proteobacteria (18.16%), Dechloromonas (16.21%), unranked environmental samples (12.51%), unclassified Betaproteobacteria (9.73%), unclassified Rhodocyclaceae (2.14%), and Rhodanobacter (1.51%). During different seasons, the same unit showed alternating changes, and during the same season, bacterial community structures were influenced by the second genus proportion in different processing units. ACEs were strongly correlated with temperature, dissolved oxygen, and pH. Bacterial diversity was strongly correlated with temperature, electrical conductivity, pH, and oxidation reduction potential. Denitrifying bacteria are greatly affected by environmental factors such as temperature and pH.

scholarly journals Understanding the Ecological Response of Planktic and Benthic Epipelic Algae to Environmental Factors in an Urban Rivers System

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1311
Author(s):  
Liling Xia ◽  
Yuelong Zhu ◽  
Zhenhua Zhao
Keyword(s):  
Environmental Factors ◽  
Interaction Mechanism ◽  
Environmental Parameters ◽  
Urban Rivers ◽  
High Concentration ◽  
Variation Characteristics ◽  
Nanjing City ◽  
Spatio Temporal ◽  
One Year ◽  
Autumn And Winter

Many studies have been concentrated on the distribution of algae in lakes, rivers, and seas, however, few studies have been concerned about their distribution and relation with polluted urban rivers. In this study, the spatio-temporal variation characteristics of water quality and algae community in Nanjing city were investigated with microscopic examination for one year. Results showed that the water pollution in this area was mainly related to high concentration of nitrogen (NH3-N and TN (Total nitrogen). There was a total of 77 species of algae in the studied rivers from June 2016 to May 2017, among which 73 species of planktic algae and 34 species of epipelic algae, in which the abundance and biomass of the latter were 1925 and 904 times that of the former, respectively. The two kinds of algae had different change tendencies which were related to seasons. For planktic algae, the abundance and biomass decreased in this season sequence: summer, spring, autumn, and winter. For epipelic algae, the abundance and biomass were relatively higher in winter. The dominant community of planktic algae was Chlorophyta-Bacillariophyceae-Cyanobacteria type, while that of epipelic algae was Bacillariophyceae—Cyanobacteria type. Most of the present algae were bi-trophic species, and were tightly related to the pollution characteristics of the rivers. The key environmental factors for planktic algae are T, TN, and TP, and those for Epipelic algae are N:P and TN. The relation between the community composition of planktic and epipelic algae and environmental parameters are highly complex, and it is worth carrying out further study to clarify their interaction mechanism.

scholarly journals Lack of Congruence in Species Diversity Indices and Community Structures of Planktonic Groups Based on Local Environmental Factors

PLoS ONE ◽  
2013 ◽  
Vol 8 (7) ◽  
pp. e69594 ◽  
Author(s):  
Hideyuki Doi ◽  
Kwang-Hyeon Chang ◽  
Yuichiro Nishibe ◽  
Hiroyuki Imai ◽  
Shin-ichi Nakano
Keyword(s):  
Species Diversity ◽  
Environmental Factors ◽  
Diversity Indices ◽  
Community Structures ◽  
Species Diversity Indices

Community structures of phytoplankton and its relationship with environmental factors in the Lhasa River

2019 ◽  
Vol 39 (3) ◽  
Author(s):  
君珊 JUN Shan ◽  
王东波 WANG Dongbo ◽  
周健华 ZHOU Jianhua ◽  
白晓宇 BAI Xiaoyu ◽  
白凯 BAI Kai
Keyword(s):  
Environmental Factors ◽  
Community Structures ◽  
Lhasa River

scholarly journals Community structures of phytoplankton and their relationships with environmental factors in the Jinshahe Reservoir, Hubei Province

2015 ◽  
Vol 27 (5) ◽  
pp. 902-910 ◽  
Author(s):  
ZHANG Yun ◽  
◽  
MA Xufa ◽  
GUO Feifei ◽  
LI Jianzhu ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Hubei Province ◽  
Community Structures

Reductionist thinking and animal models in neuropsychiatric research

2019 ◽  
Vol 42 ◽  
Author(s):  
Nicole M. Baran
Keyword(s):  
Animal Models ◽  
Mental Disorders ◽  
Environmental Factors ◽  
Neuropsychiatric Disorders ◽  
Model Organisms ◽  
Developmental Genetic ◽  
Term Study ◽  
Genetic And Environmental Factors ◽  
Mechanisms Of Plasticity

AbstractReductionist thinking in neuroscience is manifest in the widespread use of animal models of neuropsychiatric disorders. Broader investigations of diverse behaviors in non-model organisms and longer-term study of the mechanisms of plasticity will yield fundamental insights into the neurobiological, developmental, genetic, and environmental factors contributing to the “massively multifactorial system networks” which go awry in mental disorders.

The dual nature of obesity in metabolic programming: quantity versus quality of adipose tissue

2020 ◽  
Vol 134 (18) ◽  
pp. 2447-2451
Author(s):  
Anissa Viveiros ◽  
Gavin Y. Oudit
Keyword(s):  
Adipose Tissue ◽  
Environmental Factors ◽  
Maternal Obesity ◽  
Metabolic Programming ◽  
Dual Nature ◽  
Prevalence Of Obesity ◽  
Adipose Tissue Volume ◽  
Males And Females ◽  
Metabolically Healthy

Abstract The global prevalence of obesity has been rising at an alarming rate, accompanied by an increase in both childhood and maternal obesity. The concept of metabolic programming is highly topical, and in this context, describes a predisposition of offspring of obese mothers to the development of obesity independent of environmental factors. Research published in this issue of Clinical Science conducted by Litzenburger and colleagues (Clin. Sci. (Lond.) (2020) 134, 921–939) have identified sex-dependent differences in metabolic programming and identify putative signaling pathways involved in the differential phenotype of adipose tissue between males and females. Delineating the distinction between metabolically healthy and unhealthy obesity is a topic of emerging interest, and the precise nature of adipocytes are key to pathogenesis, independent of adipose tissue volume.

Shared Responsibilities for Full Participation in Society: Planning Further Integration of the ICF Into AAC

2016 ◽  
Vol 1 (12) ◽  
pp. 83-93 ◽  
Author(s):  
Mary Blake Huer ◽  
Travis T. Threats
Keyword(s):  
Environmental Factors ◽  
Augmentative And Alternative Communication ◽  
Functional Limitations ◽  
Community Support ◽  
World Health ◽  
International Classification Of Functioning ◽  
Personal Factors ◽  
Social Service Agencies ◽  
Persons With Disabilities ◽  
Full Participation

The World Health Organization's (WHO's) 2001 International Classification of Functioning Disability and Health (ICF) has as one of its central tenets the full inclusion of persons with disabilities in society. It acknowledges the need for medical and rehabilitation intervention in its biopscychosocial framework. However, the WHO realizes that society must do its part to facilitate this full participation and empowerment. Persons with complex communication needs (PWCCN) often need augmentative and alternative communication (AAC) in order to express themselves. However, in order to access and successfully use AAC, PWCCN need access to the necessary AAC devices and services, as well as a willing society to interact with them as full contributing members of society. The factors outside of a person's specific physical and/or cognitive functional limitations are addressed in the ICF via the Personal and Environmental Factors. Personal Factors include the individual's personality traits, lifestyle, experiences, social/educational/professional background, race, gender, and age. Environmental Factors include community support systems, social service agencies, governments, social networks, and those persons that interact with the PWCCN. This article addresses the sociopolitical influences on PWCCN and their functioning from a human rights perspective. The necessary introspective role of speech-language pathologists in this process is explored.

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