scholarly journals Macrophyte diversity and trophic status of Sakhya Sagar Lake, Shivpuri, Madhya Pradesh, India.

2018 ◽  
Vol 7 (8) ◽  
pp. 2398
Author(s):  
Mohit Arya ◽  
Anand Kumar Mishra ◽  
Musadiq Hussain Bhat

Aquatic habitats provide suitable environment for supporting survival of a diversity of aquatic life forms. The study was conducted in Sakhya Sagar Lake which is situated inside the Madhav National Park Shivpuri district of Madhya Pradesh. To assess the status and distribution of macrophytes, frequent trips were conducted in the study area. The plants were classified based on their habit and their presence was visually observed. A total of 16 plant species were recorded, of which 16 species, 5 species were sub-dominant, 6 species were common and 5 species were un-common. Among all the 16 plants 9 species are free floating, 4 species are submerged hydrophytes, 1 species is emergent type hydrophyte and 2 species are marginal hydrophytes. Aquatic macrophytes like Nymphaea nouchali, Nelumbo nucifera, Trapa natans, Ipomoea aquatica, Vallisnaria spiralis, Potamogeton crispus, and Azolla pinnata were recorded as the common plants of this lake. The trophic status and macrophyte diversity of Sakhya Sagar Lake has been discussed in the paper.

2019 ◽  
Vol 281 ◽  
pp. 03007
Author(s):  
Hassana Ghanem ◽  
Lamis Chalak ◽  
Safaa Baydoun

Water pollution is presently considered as a serious apprehension in Lebanon. Heavy contamination load of nutrients, heavy metals and organic pollutants can be highly harmful for human health and detrimental to aquatic life and ecosystems. Phytoremediation in natural and constructed wetlands using aquatic macrophytes present a sustainable plant-based technology recognized as a very efficient option in water treatment. The employment of species such as Phragmites, Sparganium, Lemna sp and other aquatic macrophytes not only helps in pollution cleanup but also conserves aquatic communities. To date, two pilot constructed wetlands, Litani River and Bcharreh have been established in Lebanon. These promising initiatives have been, however, accompanied with very limited research studies to examine the role of utilized plants and their efficiency in the remediation process. This paper presents an overview of the status of these initiatives and phytoremediation potential in Lebanon.


Mammalia ◽  
2006 ◽  
Vol 70 (1-2) ◽  
Author(s):  
David Brugière ◽  
Bakary Magassouba ◽  
Amidou Sylla ◽  
Halimou Diallo ◽  
Mamadou Sow

AbstractThe Republic of Guinea is thought to contain the largest population of common hippopotamus in West Africa. However, no systematic field survey has been carried out recently and the information available is limited to informal observations. To clarify the status of the common hippopotamus in Guinea, we carried out a biannual population survey along the section of the Niger River (the largest river in Guinea) within the Haut Niger National Park. We counted 93 hippopotamuses in 28 groups in the dry season and 77 hippopotamuses in 23 groups in the wet season. Mean group size and number of neonates did not change between the seasons. Hippopotomuses were more numerous along the river sections bordering uncultivated floodplains. This underlines the significance of this habitat (which is used as a grazing area) for conservation of this species. Haut Niger National Park is the most important protected area in Guinea for conservation of the common hippopotamus. Hippopotamus-human and -cattle conflicts in terms of floodplain use in the park's buffer zone should be closely monitored. Floodplain conversion to rice fields represents one of the most important threats to the long-term conservation of hippopotamus populations in Guinea.


2008 ◽  
Vol 65 (11) ◽  
pp. 2454-2460 ◽  
Author(s):  
E. G. Stets ◽  
J. B. Cotner

A survey of 12 lakes in Minnesota, USA, was conducted to examine the factors controlling variability in biodegradable dissolved organic carbon (BDOC) concentration. The principal question addressed was whether BDOC concentration was more strongly related to lake trophic status or morphometric parameters. BDOC concentration was determined by incubating filtered lake water for a period of 15 months and fitting an exponential decay curve to measured DOC concentrations. BDOC concentrations varied from 73 to 427 µmol C·L–1 and composed 15%–63% of the total DOC pool. There were no significant correlations between BDOC and measures of lake trophic status. Instead, BDOC was most closely associated with the percentage of lake area covered by littoral zone, suggesting a significant source of BDOC from aquatic macrophytes and lake surface sediments.


2003 ◽  
Vol 4 (12) ◽  
pp. 1255-1275 ◽  
Author(s):  
Stefan Leible

National legislators approach European law very differently. The reason for these differences lies partly in the historical development of their individual legal cultures. If one pursues a broad interpretation of the term ‘legal culture’ one takes especially into account the style of law and the attitude toward it. Thus legal culture can be defined as the Continental civil law countries’ ideal of a “concise, but comprehensive codification by which the judge can derive solutions for all possible cases through teleological interpretation;” whereas the common law rather limits this concept to “special laws which are interpreted very narrowly by the courts and accordingly are designed by the legislator to the last detail”. Furthermore, one could include the status of a judge, the nature of legal discourse, or the training of legal professionals, as well as the respect accorded to the law by the population when defining the concept of ‘legal culture'.


Author(s):  
Oluwaseun Babalola ◽  
Ajoke Raji

Remnant or by-products of pesticides arising from the field or storage pest applications sometimes find their ways into the final food produce. They are called pesticide residues. Studies have shown the occurrence of these residues in various food produce including tea, fruits, vegetables, beverages and even baby and infants food. With about 800 pesticides permitted for use globally, residue becomes almost inevitable. For the infants, and young children, the health effects at that critical developmental phase could be severe and irreversible. This is because quantitative and qualitative differences in pesticides absorption, metabolism, detoxification and excretion relative to adults, make the children more susceptible due to much higher kg per body weight. This study assessed the pesticide residues in the common baby food and compared with international maximum residual limits. Using gas chromatography with mass spectrometric detection, five infant and baby’s food tagged A, B, C, D and E were analyzed. In all, multiple residues involving various twenty five pesticides were detected in the five food products. Fifteen of the pesticides including resmethrin (0.0002 µg/g), chlorpyrifos (0.0002 µg/g), allethrin (0.0004 µg/g), piperonyl butoxil (0.0003 µg/g), cyfluthrin (0.0001 µg/g), chlorpyrifos methyl (0.0002 µg/g), diclorovos (0.0001 µg/g), fluridane (0.0002 µg/g), fludioxonil (0.0002 µg/g and 0.0001 µg/g), lindane (0.0002 µg/g), daminozide (0.0002 µg/g), methy paraoxon (0.0001 µg/g) and DDE.p.p (0.0002 µg/g and 0.0001 µg/g) were above the WHO and USEPA maximum residual limits. The potential interaction of different mixtures for those pesticides that are below international residual limits as well as the occurrence of those at concentrations above these standards called for serious concerns, giving their critical effects on nervous, endocrine and immune systems. Further studies must be encouraged to determine the status of residue in other foods and the elimination of these residues, particularly in the infants and baby’s food.


PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0247859
Author(s):  
Chiao-Yi Huang ◽  
Wei-Sheng Yu ◽  
Geng-Chia Liu ◽  
Shih-Che Hung ◽  
Jen-Hsiang Chang ◽  
...  

The large amounts of engineered titanium dioxide nanoparticles (TiO2NPs) that have been manufactured have inevitably been released into the ecosystem. Reports have suggested that TiO2 is a relatively inert material that has low toxicity to animals. However, as various types of NPs increasingly accumulate in the ocean, their effects on aquatic life-forms remain unclear. In this study, a zebrafish model was used to investigate TiO2NP-induced injury and mortality. We found that the treatment dosages of TiO2NP are positively associated with increased motility of zebrafish and the bacterial counts in the water. Notably, gill but not dorsal fin and caudal fin of the zebrafish displayed considerably increased bacterial load. Metagenomic analysis further revealed that gut microflora, such as phyla Proteobacteria, Bacteroidetes, and Actinobacteria, involving more than 95% of total bacteria counts in the NP-injured zebrafish gill samples. These results collectively suggest that opportunistic bacterial infections are associated with TiO2NP-induced mortality in zebrafish. Infections secondary to TiO2NP-induced injury could be a neglected factor determining the detrimental effects of TiO2NPs on wild fish.


2018 ◽  
pp. 17-36
Author(s):  
Tomasz Brańka

Pursuant to the Constitution of 1953, the Kingdom of Denmark is a unitary state. How- ever, the status of the Faroe Islands and Greenland actually defies the uniform character of this state. In its broader aspect, this situation undermines the widespread myth of Nordic unity. The official standpoint, explaining the Danish policy of aiding the Faroe Islands and Green- land, points to the long-standing tradition that links Denmark with her overseas territories and the common values that bind them. The Danish responsibility for the development of these territories is also emphasized and financial aid is treated as an expression of the solidarity pol- icy. The paper analyzes the benefits and costs related to maintaining the insular possessions of Denmark.


2021 ◽  
Vol 3 (1) ◽  
pp. 87-95
Author(s):  
Amina Hassan

The study explored the common students’ indiscipline at Islamic University in Uganda. The study was quantitative and a cross-sectional survey design was used. The population of the study was 3,486 registered students in the academic year 2019/2020. They were selected from the Faculty of Education, Faculty of Management Studies, Faculty of Law, Faculty of Social Sciences, and Faculty of Science. A sample of 265 respondents was selected for the study using proportionate and random sampling. The mean score was computed to analyse the data. To conclude, the point range of the arithmetic mean was considered. The study found that the common indiscipline among learners in IUIU included disrespect to teachers and school rules and regulations, theft, and irregular attendance. The study recommended IUIU administration improves staff remuneration to change the status of the teachers. Furthermore, the administration needs to tighten security in the university and residents need to take care of their property to avoid theft. The researcher also recommended that a study should be carried out to find out the cause of students’ irregular attendance


2021 ◽  
Vol 30 (2) ◽  
pp. 99-106
Author(s):  
Nancy Collins ◽  
Carlos Gerardo Velazco-Macias

A new species of tree cricket, Neoxabea mexicanasp. nov., is described from northeast Mexico. Although it has morphological similarities to two other species found in Mexico, there are distinguishing characters, such as a well-developed tubercle on the pedicel, black markings on the maxillary palpi, one of the two pairs of spots on the female wings positioned at the base of the wings, stridulatory teeth count, and the pulse rate of the male calling song. The calling song description and pre-singing stuttering frequencies are provided. Character comparisons that rule out other species in the genus are presented. The common name given to this new species is Mexican tree cricket. Sound recordings and video are available online. We also make some clarification of the status of Neoxabea formosa (Walker, 1869), described as Oecanthus formosus, and present a key of Neoxabea in North and Central America.


2017 ◽  
Vol 9 (11) ◽  
pp. 10961 ◽  
Author(s):  
Subrat Debata ◽  
Tuhinansu Kar ◽  
Kedar Kumar Swain ◽  
Himanshu Shekhar Palei

The Indian Skimmer is a globally threatened bird native to Bangladesh, India, Myanmar, Nepal, Pakistan, and Vietnam.  In India, it is more confined to the north, from Punjab through Uttar Pradesh, Madhya Pradesh to West Bengal, extending up to Odisha.  Earlier, the bird was known to breed only in Uttar Pradesh and Madhya Pradesh, we confirm here the breeding of the Indian Skimmer along the river Mahanadi near Mundali, Odisha, eastern India.  So, further monitoring at the breeding site and survey along the entire Mahanadi River are essential to understand the status of the Indian skimmer in Odisha.  The information will also aid in reassessing its global status and formulating conservation plans.


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