Phytoplankton Species Composition and Physico-chemical Characteristics of Ismailia Canal, Egypt

Yusuf, Ahmed; Saleh, Amal I.; Fatah, Hesham Abd El

doi:10.21608/egyjs.2018.116011

Cited by 1 publication

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The principal aim of this study was to contribute to a response to this important question, in the above-mentioned literature and other papers, have been primarily based on light microscopyuncovered morphological traits, overlooking ultrastructural details which are crucial for precise species delineation, particularly in diatoms. Besides the interest in their spatio-temporal distribution and ecological niches, algal-and diatom-based environmental assessment (El-Naghy et al, 2006;El-Sheekh et al, 2010;Shaaban et al, 2012Shaaban et al, , 2015Abd El-Karim, 2014;Wołowski et al, 2017;Yusuf et al, 2018) and paleoenvironmental reconstructions (e.g., Zalat, 2003) have also been pursued in some studies. Given that Egyptian phycological investigations are mostly restricted to the River-Nile basin, lakes, pools, and agricultural drainages, the little-explored and untouched desert ecosystems in the Western and Eastern Deserts still await first or more intensive polyphasic studies, i.e.…”

Section: Introductionmentioning

confidence: 99%

Taxonomic and Ecological Observations on Some Algal and Cyanobacterial Morphospecies New for or Rarely Recorded in Either Egypt or Africa

et al. 2020

View full text Add to dashboard Cite

T HE UNDERSTANDING of the diversity and spatial distribution of cyanoprokaryotes and algae in Egypt is challenging because this is still an understudied topic. To address this knowledge gap, we discuss morphotaxonomic features and ecological preferences for ten cyanobacterial and algal morphospecies from diverse Egyptian biotopes. Morphospecies were studied and identified using state-of-the-art and fine-grained taxonomy based on light and scanning electron microscope observations. Of these taxa, the cyanoprokaryotes Lemmermanniella uliginosa and Scytonema myochrous, the freshwater diatoms Cyclotella meduanae, Cavinula lapidosa, and Craticula subminuscula, the unicellular chrysophyte Mallomonas crassisquama, and the worldwide rarely-recorded zygnematalean streptophyte Hallasia cf. reticulata are designated as new records for Egypt. Moreover, the latter and L. uliginosa are as well first records for the whole African continent. Worthy of note, the freshwater diatoms Cyclostephanos invisitatus, Encyonema neomesianum, and Gomphonema laticollum have been rarely observed in previous Egyptian studies. Overall, most taxa identified tolerate increased nutrient concentrations (mesoeutraphentic and eutraphentic species), reflecting different human impacts on the biotopes they colonize. These newly recorded taxa are supposed to have been mostly overlooked in the previous Egyptian studies due to their relatively isolated habitats, small size, or complex taxonomic and nomenclatural history. More interesting algal and cyanobacterial taxa are still hidden and not yet discovered in Egypt, particularly in the little-explored and isolated desert habitats, and further research, using integrated polyphasic approaches, is therefore indispensable to achieve a better estimate of the Egyptian cyanobacterial and algal diversity, and to set up efficient algae-based assessment systems tailored for the Egyptian habitats.

show abstract