Ahmed El-khouly - Academia.edu (original) (raw)

Papers by Ahmed El-khouly

Environment, Resource and Ecology Journal, 2017

The present study aims to investigate the variation in vegetation and species diversity in two co... more The present study aims to investigate the variation in vegetation and species diversity in two coastal wadis (Wadi El-Mallaha and W. Esli) which drain their water from surrounding high mountains into the Red Sea. It attempted to compare the floristic diversity between these wadis to recognize the different distribution patterns of species, and to assess the role of the edaphic factors which control the distribution of the plant communities. Fourteen sample plots were selected to represent as much as possible the variation in the vegetation, and georeferenced using GPS techniques. A total of 23 perennial species belonging to 19 genera and 14 families were recorded, with Zygophyllaceae, Fabaceae, Tamaricaceae and Asteraceae represented the species-rich families. Phanerophytes and Chamaephytes constituted the main bulk of the flora, followed by hemicryptophytes. As part of the Saharo-Arabian region, the Saharo-Arabian chorotype dominated the others. Classification of the vegetation resulted in 6 vegetation groups: (A) Juncus rigidus, (B) Zygophyllum coccinium, (C) Capparis decidua, (D) Zilla spinosa, (E) Zygophyllum coccinium and (F) Nitraria retusa. Species richness was Positively correlated with fine gravel, while negatively correlated with medium sand. The Shannon's diversity and Simpson Indices showed positive correlation with CaCO 3 and negative correlation with fine sand. Vegetation-soil relationships were assessed by Canonical Correspondence Analysis (CCA) using 18 soil factors indicated that gravel, coarse sand, fine sand, silt, clay, sodium and chlorides were the key soil variables that affect the distribution of plant communities in the coastal wadis of Red Sea region.

Applied Vegetation Science, 2021

This is an open access article under the terms of the Creative Commons Attribution License, which... more This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Annals. Of Agric. Sc., Moshtohor, Vol. 45 (1): 31-48., 2007

The vegetation of Bagbag area formed of eight plant community dominated and co-dominated by: Asph... more The vegetation of Bagbag area formed of eight plant community dominated and co-dominated by: Asphodelus ramosus, Thymelaea hirsuta, Deverra tortuosa, Stipa capensis, Lygeum spartum, Plantago albicans, Haloxylon scoparium and H. scoparium - T. hirsuta. Seventeen associated palatable species were recorded in these communities: eleven perennials and six annuals. Asphodelus ramousus community comprises the highest number of palatable species.
Six palatable perennial species distributed in Bagbag area were selected to evaluate their potentiality for development this area. These species are: Gymnocarpos decander, Helianthemum lippii, Echiochilon fruiticosumm, Deverra tortousa, Periploca angustifolia and Lycium shawii. Deverra tortuosa has a high average of density and importance value (7.0 and 32.3, respectively) comparing with the other palatable studied species, while P. angustifolia had the lowest average values of density and importance value (0.2 and 2.9). The highest percentage of crude protein (CP), TDN and DCP had been determined in the grazeable parts of P. angustifolia followed by L. shawii. Most of the palatable species had low values of IV and density being dwarf due to heavy grazing. Though the pasture condition of the study area is generally high, the vegetation potential is promising. There are chances of improvement and development of the study area.

Journal of Plant Production, 2002

The average of absolute density for 62 perennial species in five types of habitats was recorded. ... more The average of absolute density for 62 perennial species in five types of habitats was recorded. The highest absolute density in coastal sand dune habitat was contributed by Launaea resedifolia while, in saline depression, inland plateau and ridge the highest account was recorded for Salsola tetragona, Launaea. Resedifolia and Scorzonera undulata. The ridge habitat contributed the highest number of species (32 species), while the lowest number was attained in the non-saline depression (20 species). Sixty-two species belonging to 24 families were recorded. The highest contribution was presented by members belonging to family Compositae followed by Gramineae and Chenopodiaceae (15, 13 and 13 %, respectively). On the community levels the plant community of inland ridge exhibited the highest abundance in terms of absolute density while plant community of the non-saline depression exhibited the lowest value. Most perennial species exhibit their greatest phonological activity during winter and spring, and were less active or dormant during autumn. However, some species, particularly most shrubs and sub-shrubs, continue to be active throughout the whole year (e.g. Deverra tortuosa, Helianthemum lippii, and Artemisia herba-alba). The most common life-forms were of the woody species (76 %) which include 41 % non-succulent leaves and 5 % succulent leaves, while the contribution of herbs represented 25 % of which 5 % were non-succulent leaves. The tallest plants recorded during the growing season in the whole area were those of Thymelaea hirsuta, Lycium shawii and Anabasis articulata were among shrubly species and Asphodelus ramosus of the perennial herbs and the grass Ammophila arenaria. On the other hand, the sub-shrubs Helianthemum lippii and H. kahiricum were the shortest. Some other human activities have more impact on the vegetation than the over grazing by livestock. The various activities have different impacts on the plant diversity (e.g. 11 species of the recorded species were rated as endangered species due to human impact or desertification). Positive significant correlation coefficients were found between soil depth and both abundance of evergreen shrubs with non succulent leaves and with herbs.

Vegetation Classification and Survey, May 4, 2020

Aims: Gebel Elba is an arid mountain range supporting biological diversity that is incomparable t... more Aims: Gebel Elba is an arid mountain range supporting biological diversity that is incomparable to any other region of Egypt. This mountain has a vegetation structure and floristic community similar to the highlands of East Africa and the southwestern Arabian Peninsula. We aimed to provide the first classification of the vegetation units on Gebel Elba and identify the environmental factors controlling their distribution. Study area: Wadi Yahmib and its tributaries, which drain the northwestern slopes of Gebel Elba, southeastern Egypt. Methods: On the basis of 169 relevés, we used TWINSPAN to classify the perennial vegetation. We calculated separate GAMs for the deciduous and evergreen species to describe the patterns for each leaf strategy type with elevation. We used CCA to quantify the relationship between the perennial vegetation and the studied environmental factors. To estimate diversity and our sampling strategy, we used rarefaction curves for species richness. Results: We identified seven communities along the elevational gradient of Wadi Yahmib and its tributaries. We found that each community was restricted to a confined habitat depending on its drought resistance ability. Deciduous Vachellia woodland was the main vegetation type on Gebel Elba, while evergreen Olea woodland appeared in small fragments at higher elevations. We analysed the distribution patterns of deciduous and evergreen trees along the elevational gradient. We found a turnover at 500 m, indicating a potential ecotone between the Vachellia and Olea woodlands that was occupied by a Ficus community. CCA revealed the importance of altitude and soil quality in determining the vegetation structure of Gebel Elba. The species richness increased with elevation as a result of reduced stress and increased water availability at the upper wadis. Conclusions: This study identified seven vegetation units in the study area and showed the importance of orographic precipitation, soil quality and the complex topography in determining the habitats. Taxonomic reference: Boulos (2009); names updated according to POWO (2019).

Journal of Environmental Sciences. Mansoura University

SN Applied Sciences

The planted Rhizophora mucronata was evaluated in two plant ages (one year and eight years) as a ... more The planted Rhizophora mucronata was evaluated in two plant ages (one year and eight years) as a biological tool for reducing the mobility of heavy metals in sediments in Safaga and Hamata, Red Sea Coast, Egypt. It is an important region for tourism and nature reserves; however, this area suffers from various anthropogenic contaminants. The ability of mangrove plantations to reduce sediment contamination through bioaccumulation, phytostabilization, or phytoextraction must be clarified through the investigation of metal behavior in mangrove plants and sediments. All of the studied heavy metals had significantly higher concentrations in the Safaga site's sediments. Elder plants had much lower levels of heavy metals in their sediments than younger plants, also rhizosphere samples were less contaminated than non-rhizosphere ones. The order of remediation efficiency was Mo > Ni > Mn ≥ Co > Al > Cu > Zn ≥ Cr > Fe > V, where the highest % was 99.25, 58.97, 42.64, 4...

Rhizophora mucronata was assessed as a biological tool for remediation and reduction of heavy met... more Rhizophora mucronata was assessed as a biological tool for remediation and reduction of heavy metals mobility in sediments in Safaga and Hamata, the Red Sea Coast. It is an important region for tourism and nature reserves; however, this area suffers from various anthropogenic contaminants. Investigation of metal behavior in mangrove plants and sediments is important for clarifying the ability of mangroves to reduce sediments contamination through bioaccumulation, phytostabilization or phytoextraction. Sediments of Safaga site showed higher significant concentrations of all studied heavy metals. Heavy metal contents in sediments were significantly lower in case of elder plants than younger ones as well as in rhizosphere samples than non-rhizosphere ones. The order of remediation efficiency was Mo > Ni > Mn ≥ Co > Al > Cu > Zn ≥ Cr > Fe > V, where the highest % were 99.25, 58.97, 42.64, 42.48, 41.91, 39.47, 37.93, 37.01, 36.89, and 29.44, respectively. R. mucronat...

Springer Water, 2021

Egypt total area found under arid and hyperarid climatic conditions, of which only a small portio... more Egypt total area found under arid and hyperarid climatic conditions, of which only a small portion (3% of total area) is agriculturally productive. Deserts in Egypt represent about 96% of Egypt’s area. The Egyptian deserts comprise three main geographical units: the Western desert; the eastern desert; and the Sinai Peninsula. Egyptian deserts are located in the hyper-arid regions of North Africa and in Asia astride the Sahara and Arabian Desert with annual rainfall in most parts of less than 50 mm. The main habitats in the Egyptian deserts are distinguished to wadies, sand formations, gravel formations, salt marshes and reed swamps. The water resources in the desert are mainly groundwater. Most of the soil texture in the Egyptian desert are sand. The Egyptian flora is a mixture of flora that characterizes three continents: Africa, Asia, Europe, and this related to the geographical location of Egypt between the three continents. The natural resources in the Egyptian deserts subjected to degradation and deterioration mainly by land salinization, water deficiency and wind erosion.

Global Cardiology Science and Practice

Traditionally, massive, life-threatening pulmonary embolism (PE) has been treated with systemic t... more Traditionally, massive, life-threatening pulmonary embolism (PE) has been treated with systemic thrombolytic therapy, whereas submassive and smaller acute PEs have been treated with systemic anticoagulation therapy. Given that thrombolytic therapy is associated with a risk of life-threatening complications, including intracranial hemorrhage, it has not been routinely used or recommended for submassive PEs. In 2017, the Food and Drug Administration (FDA) approved ultrasound-facilitated catheter- directed thrombolysis (USCDT) for acute massive and sub-massive pulmonary embolism. USCDT is primarily performed via jugular or femoral venous access. There have been isolated reports of USCDT performed via upper-extremity venous access. We present a case of ultrasound-facilitated catheter-directed thrombolysis (USCDT) in a submassive PE patient with dual right upper extremity venous access, where both sheaths were advanced into the basilic vein (due to anatomic variation). Based on recent cl...

The course discusses the importance of money and banking to economic activity on the national and... more The course discusses the importance of money and banking to economic activity on the national and international level. You will learn the definition of money and about the different financial institutions that help circulate money through the system. The course also covers deposit expansion, the evolution of commercial banking, deposit creation, and a detailed study of the Federal Reserve Banking system. The course also includes the relationship between money and banking and Macroeconomic theory and concludes with the importance of money and banking in international trade and finance

Journal of Community Hospital Internal Medicine Perspectives, 2021

Mitral valve infective endocarditis, without aortic involvement, is a rare cause of complete hear... more Mitral valve infective endocarditis, without aortic involvement, is a rare cause of complete heart block. It is thought that infections placed close to the conductive system of the heart may drive a conduction block. We found six cases in the literature, via searching PubMed, of mitral valve infective endocarditis with complete heart block and no aortic involvement. We report a case of complete heart block with a junctional escape rhythm in a patient with a Staphylococcus Aureus vegetation on a native mitral valve only.

March 11, 2020, marked the start of the coronavirus disease 2019 (COVID-19) pandemic. COVID-19, c... more March 11, 2020, marked the start of the coronavirus disease 2019 (COVID-19) pandemic. COVID-19, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), was being reported as severe respiratory illness. However, since the recognition of this novel virus, there has been a constant realization that it may present or manifest in a multitude of ways. At first, the typical signs and symptoms were what one would expect from a respiratory virus: cough, shortness of breath, and fever. However, as the disease became more prevalent, neurologic symptoms were reported such as headaches, hypogeusia, and hyposmia. This case report aims to add to the growing body of neurologic manifestations by presenting two cases, Bell's palsy and Guillain-Barre Syndrome. Each case involves flaccid paralysis as the primary presentation. Categories: Internal Medicine, Neurology, Infectious Disease

Cureus, 2021

This article has been retracted based on the discovery that the submitting author, Dr. Ahmed Elkh... more This article has been retracted based on the discovery that the submitting author, Dr. Ahmed Elkhouly, invited his wife to serve as a peer reviewer without properly disclosing this relationship. As this fraudulent peer review was completed and taken into consideration when determining whether to publish this article, Cureus has no choice but to retract this article due to this author misconduct and falsification of peer review. An additional four articles submitted by Dr. Elkhouly have been retracted for the same reason. Cureus greatly regrets that these fraudulent peer reviews were not identified prior to publication. Dr. Elkhouly's residency program has been notified as is consistent with COPE guidelines.

Global Cardiology Science & Practice, 2020

Bilaterally absent superior vena cava (SVC) is extremely rare anomaly with a few case reports in ... more Bilaterally absent superior vena cava (SVC) is extremely rare anomaly with a few case reports in the literature. Without associated congenital cardiac disease, these anomalies are asymptomatic. This report describes an adult patient with bilaterally absent SVC presenting with Mobitz type II heart block and a structurally normal heart.

Cureus, 2021

Traditionally, massive, life-threatening pulmonary embolism (PE) has been treated with systemic t... more Traditionally, massive, life-threatening pulmonary embolism (PE) has been treated with systemic thrombolytic therapy while submassive and smaller acute PEs have been treated with systemic anticoagulation therapy. Given that thrombolytic therapy is associated with the risk of life-threatening complications including intracranial hemorrhage, it has not been routinely used or recommended for submassive PEs. In 2017, the Food and Drug administration (FDA) approved ultrasound-facilitated catheter-directed thrombolysis (USCDT) for acute massive and sub-massive pulmonary embolism. USCDT has primarily been performed using jugular or femoral venous access. There have been isolated reports of USCDT performed through upper extremity venous access. We present a case of USCDT in a submassive PE patient with dual right upper extremity venous access where both sheaths were advanced into the basilic vein (due to anatomic variation). Based on recent clinical trial data suggesting that shorted durati...

Environment, Resource and Ecology Journal, 2017

Applied Vegetation Science, 2021

Annals. Of Agric. Sc., Moshtohor, Vol. 45 (1): 31-48., 2007

Journal of Plant Production, 2002

Vegetation Classification and Survey, May 4, 2020

Journal of Environmental Sciences. Mansoura University

SN Applied Sciences

Springer Water, 2021

Global Cardiology Science and Practice

Journal of Community Hospital Internal Medicine Perspectives, 2021

Cureus, 2021

Global Cardiology Science & Practice, 2020

Cureus, 2021

Traditionally, massive, life-threatening pulmonary embolism (PE) has been treated with systemic t... more Traditionally, massive, life-threatening pulmonary embolism (PE) has been treated with systemic thrombolytic therapy while submassive and smaller acute PEs have been treated with systemic anticoagulation therapy. Given that thrombolytic therapy is associated with the risk of life-threatening complications including intracranial hemorrhage, it has not been routinely used or recommended for submassive PEs. In 2017, the Food and Drug administration (FDA) approved ultrasound-facilitated catheter-directed thrombolysis (USCDT) for acute massive and sub-massive pulmonary embolism. USCDT has primarily been performed using jugular or femoral venous access. There have been isolated reports of USCDT performed through upper extremity venous access. We present a case of USCDT in a submassive PE patient with dual right upper extremity venous access where both sheaths were advanced into the basilic vein (due to anatomic variation). Based on recent clinical trial data suggesting that shorted durati...

Groundwater in Egypt’s Deserts, 2021

No doubt that groundwater is an essential source of water resources in many regions in the world ... more No doubt that groundwater is an essential source of water resources in many regions in the world particularly in arid desert areas as in the case of Egypt. Egypt’s deserts rely on groundwater where no other reliable source is available. The rapid growth of the population and the need for food at a reasonable price lead Egypt to extend its agricultural expansion to the deserts where 1.5 million feddans (1 Feddan = 4200 m2) are entering the plan for cultivation. This book focuses on the groundwater in Egypt’s deserts, its availability, quantity, quality, uses, and the future agricultural expansion. The book consists of 17 chapters in ﬁve parts.
Part “Introductory Section” is an introduction and contains two Chaps. “Intro-duction to “Groundwater in Egypt’s Deserts”” and “An Overview of the Egyptian Deserts’ Resources”. Part “Groundwater Occurrence and Ecosystem Services”. Part “Groundwater Exploration, Quantity, Quality, and Their Management” deals with Groundwater Exploration, Quantity, Quality and their Management in 8 Chap-ters . On the other hand, the topic (Transboundary groundwater management issues in the Nubian Sandstone Aquifer System (NSAS) is covered in Chap. “Transboundary Groundwater Management Issues in the Nubian Sandstone Aquifer System (NSAS)”
The last Part of the book is to conclude the book with a chapter titled (Update, Conclusions and Recommendations of the Groundwater in Egypt’s Deserts”.

Management and Development of Agricultural and Natural Resources in Egypt’s Desert, 2021

Egyptian deserts forms about 96% of the total area of Egypt. These vast deserts could represent a... more Egyptian deserts forms about 96% of the total area of Egypt. These vast deserts could represent a vital part of the future of the development of Egypt to meet the challenges facing Egypt to satisfy increased demand of food and economic growth while the population is rapidly increasing. Therefore, this volume focuses on the natural and agricultural resources in Egypt’s deserts and the means of their sustainable management and development. The book consists of 20 chapters divided into eight parts and contributed by more than 18 scientists, experts specialists and researchers in the ﬁeld of natural and agriculture resources.