A5068765896- Arctic and Antarctic ice dynamics
- Methane Hydrates and Related Phenomena
- Ocean Acidification Effects and Responses
- Atmospheric and Environmental Gas Dynamics
- Marine and coastal ecosystems
- Plant Pathogens and Fungal Diseases
- Mycorrhizal Fungi and Plant Interactions
- Botany and Plant Ecology Studies
- Composting and Vermicomposting Techniques
- Agronomic Practices and Intercropping Systems
- Chromium effects and bioremediation
- Isotope Analysis in Ecology
- Growth and nutrition in plants
- Climate change and permafrost
- Marine and fisheries research
- Plant Water Relations and Carbon Dynamics
- Cryospheric studies and observations
- Crop Yield and Soil Fertility
- Essential Oils and Antimicrobial Activity
- Agricultural Science and Fertilization
- African Botany and Ecology Studies
- FinTech, Crowdfunding, Digital Finance
- Underwater Acoustics Research
- Agricultural and Rural Development Research
- Foot and Ankle Surgery
University of Calgary
2017-2024
Esri (Canada)
2023-2024
Beni-Suef University
2017-2023
Central Laboratory for Agricultural Climate
2018-2023
University of Victoria
2023
Bangladesh Rice Research Institute
2018-2022
Agricultural Research Center
2006-2022
Kafrelsheikh University
2021
Alexandria University
2003-2021
Taibah University
2021
Abstract. Despite growing evidence that the ocean is an important source of ice-nucleating particles (INPs) in atmosphere, our understanding properties and concentrations INPs surface waters remains limited. We have investigated sea microlayer bulk seawater samples collected Canadian Arctic during summer 2016. Consistent with 2014 studies, we observed were ubiquitous seawaters; heat filtration treatments reduced INP activity, indicating likely heat-labile biological materials between 0.22...
Abstract We present a year‐round time series of dissolved methane (CH 4 ), along with targeted observations during ice melt CH and carbon dioxide (CO 2 ) in river estuary adjacent to Cambridge Bay, Nunavut, Canada. During the freshet, concentrations ice‐covered were up 240,000% saturation 19,000% saturation, respectively, but quickly dropped by >100‐fold following melt. Observations robotic kayak revealed that river‐derived CO transported rapidly ventilated atmosphere once cover...
Managing Arctic marine resources to be resilient environmental changes requires knowledge of how climate change is affecting food webs and fisheries. Changes fishery will have major implications for coastal Indigenous communities whose livelihoods, health, cultures are strongly connected Understanding these broad social-ecological a transdisciplinary approach bringing together contrasting complementary disciplines ways knowing. Here, we examine climatic proxies, ecological, indicators...
Improving our understanding of how the ocean absorbs carbon dioxide is critical to climate change mitigation efforts. We, a group early career professionals working in Canada, summarize current research and identify steps forward improve marine sink Canadian national offshore waters. We have compiled an extensive collection reported surface air–sea exchange values within each Canada's three adjacent basins. review fluxes major challenges limiting Pacific, Arctic, Atlantic Ocean. focus on...
Over the last few decades, African Sahel has become focus of many studies regarding vegetation dynamics and their relationships with climate people. This is because rainfall limits production biomass in region, a resource on which people are directly dependent for livelihoods. In this study, we utilized remote-sensing approach to answering following two questions: (1) how does dynamic relationship between soil moisture plant growth vary across hydrological regimes, (2)...
Abstract This study provides 6 years of high‐resolution underway measurements the sea surface partial pressure CO 2 ( p 2sw ), temperature, and salinity across Canadian Arctic Archipelago (CAA). Observed varied regionally, with northern central channels CAA undersaturated in (with respect to atmosphere), while western regions were typically saturated supersaturated . apparent spatial variability was caused some extent by timing our ship transit through CAA, as we also found a general...
The objective of this study is to quantify the impact freshwater stratification on vertical gradients partial pressure CO2 (pCO2) and estimates air-sea exchange in Hudson Bay during peak sea-ice melt river runoff. During spring 2018, we sampled water Strait for dissolved inorganic carbon, total alkalinity, salinity, oxygen stable isotope ratio (δ18O), other ancillary data. coastal domain regions close ice edge had significant concentration pCO2 across top meters ocean due presence a...
Studying carbon dioxide in the ocean helps to understand how will be impacted by climate change and respond increasing fossil fuel emissions. The marine carbonate system is not well characterized Arctic, where challenging logistics extreme conditions limit observations of atmospheric CO2 flux acidification. Here, we present a high-resolution data set covering complete cycle sea-ice growth melt an Arctic estuary (Nunavut, Canada). This was collected through three consecutive yearlong...
During a research expedition in Hudson Bay June 2018, vast areas of thick (>10 m), deformed sediment-laden sea ice were encountered unexpectedly southern and presented difficult navigation conditions for the Canadian Coast Guard Ship Amundsen. An aerial survey one these floes revealed maximum ridge height 4.6 m an average freeboard 2.2 m, which corresponds to estimated total thickness 18 far greater than expected within seasonal cover. Samples upper portion floe that it was isothermal...
Abstract. The global ocean takes up nearly a quarter of anthropogenic CO2 emissions annually, but the variability in this uptake at regional scales remains poorly understood. Here we use neural network approach to interpolate sparse observations, creating monthly gridded seawater partial pressure (pCO2) data product from January 1998 December 2019, 1/12∘ × spatial resolution, northeast Pacific open ocean, net sink region. (ANN-NEP; NCEI Accession 0277836) was created pCO2 observations within...
The research work investigates the impact of interaction between several rates compost and microorganisms (bacteria, fungi, mycorrhiza) their residual effects on growth metals (Cd Ni) uptake in carrot (Daucus carota L.) jew´s mallow (Corchorus olitorius grown thereafter.Soil samples were collected from agricultural areas near superphosphate factory used for pot experiments.Microorganisms isolated area under study which four fungal isolates (Aspergillus niger, A. terreus, Penicillium...
Abstract Arctic shelf seas are highly heterogeneous, making it difficult to accurately account for their role in regional and global air‐sea CO 2 exchange budgets. Here we estimate the sink Canadian Archipelago (CAA) based on empirical relationships that spatiotemporal variations sea surface partial pressure of ( p 2sw ) as a function seasonal ice cycles. During open water season from 2010 2016, CAA acted net oceanic with an average flux −7.7 ± 4 Tg C/year. This is significantly smaller than...
The environmental impact of crop wastes and the high cost peat moss (PM) force scientists to find alternative growing media. In a pot experiment, peanut shell (PS) corn (CWs) were evaluated as media in comparison with PM three different mixing ratios washed sand. ratio M1 = 1:1 raw material sand, M2 1:2 M3 1:3 tested plant was lettuce (Lactuca sativa L.). obtained results showed that PS medium contained available nitrogen (N) phosphorus (P) higher by 121% 38% above medium. Availability...
Peat is considered the conventional growing medium in most soilless culture systems. The high cost of peat and urgent need agricultural wastes recycling encouraged scientists users to search for an alternative growth where optimal conditions are achieved help safe disposal wastes. In current study, peanut shell (PS) corn (CW) were used as media comparison moss (PM). tested organic examined with sand at three mixing ratios (1:1 "M1", 1:2 "M2" 1:3 "M3" raw material: washed sand, respectively)....
Cumin wilt caused by Fusarium oxysporum f. sp. cumini is the most destructive abundant disease, limiting cumin production in Egypt. The objective of this study was to evaluate efficacy granular bioactive formulation Trichoderma viride (GBTV) and arbuscular mycorrhizal fungi (AM) for biological control disease. Ten species were isolated from rhizosphere healthy plants tested dual culture assay against growth F. oxysporum. TC40, T. hamatum koningii recorded highest reduction target pathogen....
Estimating sea–air CO2 fluxes in coastal seas remains a source of uncertainty global carbon budgets because processes like primary production, upwelling, water mixing, and freshwater inputs produce high spatial temporal variability partial pressure (pCO2). As result, improving our pCO2 baseline observations these regions is important, especially sub-Arctic Arctic that are experiencing strong impacts climate change. Here, we show the patterns main controlling seawater Hudson Bay during 2018...
Abstract. Warming of the Arctic due to climate change means Ocean is now free from ice for longer, as sea melts earlier and refreezes later. Yet, it remains unclear how this extended ice-free period will impact carbon dioxide (CO2) fluxes scarcity surface ocean CO2 measurements. Baseline measurements are urgently needed understand spatial temporal air–sea flux variability in changing Ocean. There also uncertainty whether previous basin-wide surveys representative many smaller bays inlets...
Five Trichoderma species/strains, virens IMI-392430, T. pseudokoningii IMI-392431, harzianum IMI-392432, IMI-392433 and IMI-392434 were tested against anthracnose fruit rot of chilli. Effect species in suppressing as well the growth yield chilli evaluated. Seven treatments consisting five strains, one Colletotrichum capsici control used seed treatments. Chilli seeds treated with spore suspension or secondary metabolites each species/strain C. separately. Mixture was also metabolites. Percent...
This investigation was conducted in a private organic farm Wadi El-Malak district, Ismailia Governorate, Egypt, to evaluate some biocontrol agents i.e.Trichoderma album, T. harzianum, viride , biocides i.e.Blight stop (T.harzianum), Bio Zeid (T.album) and natural compound i.e. humic acid micronic sulfur treatments the controlling powdery mildew disease of mango cv.Keitt during two successive seasons 2021 2022.All proved effective decreasing Incidence severity caused by Oidium mangiferae...
Abstract. The global ocean takes up nearly a quarter of anthropogenic CO2 emissions annually, but the variability this uptake at regional scales remains poorly understood. Here we use neural network approach to interpolate sparse observations, creating monthly gridded seawater partial pressure (pCO2) data product from January 1998 December 2019, 1/12° × spatial resolution, in Northeast Pacific open ocean. (ANN-NEP; NCEI Record ID: BGSH2HNRP) was created pCO2 observations within 2021 version...
Aim: The current study aimed to characterize the composition of endophytic fungal communities related Taify grapevine leaves. Methodology: leaves were collected from three different locations at Taif region. Total DNA was extracted and investigated using next generation sequencing in a metagenomics approach. Results: obtained data detected 26 operational taxonomic units (OTUs) all with variation most taxa among locations. phylum Ascomycota dominated relative sequence abundance (90.83%),...
The aim of the present investigation was to improve productivity wheat grown on sandy calcareous soil Arab El-Awammer Experimental Station, Assiut governorate through using organic matter, elemental Sulphur application, and suitable level mineral N-fertilization. Three field experiments were conducted for this purpose; two in winter season 2004/2005 third 2005/2006. tested different forms manures: Farm yard manure (FYM), chicken (CM) Town wastes (TW) at rate 100 kg N/fed liquid Vinasse 5...
Abstract The effect of compost, inoculation with native soil microbes and their residual effects on bioavailability nickel by peas ( Pisum sativum L.) radish Raphanus sativus grown polluted were investigated in pot experiments. Plants amendment different compost levels (0, 0.2, 0.4, 0.6% dry weight) inoculated (4 fungal species, one bacterial 4 species arbuscular mycorrhizal fungi) isolated from the under study. Significant increases biomass pea plants observed as a result application...