Cilt:29 Sayı:02 (2020)

Permanent URI for this collection

https://dspace.ankara.edu.tr/handle/20.500.12575/76607

Browse

Browsing Cilt:29 Sayı:02 (2020) by Author "Fen Fakültesi"

Now showing 1 - 4 of 4
  • No Thumbnail Available
    Item
    Investıgatıon of fungı spores concentratıon ın nığde atmosphere (Turkey)
    (Ankara Üniversitesi Fen Fakültesi, 2020) Pınar, Nur Münevver; Biyoloji; Fen Fakültesi
    Atmospheric fungi spores investigated in Niğde province with the help of Burkard volumetric trap between January 2014 -December 2014. As total of 70 561 spores belonging to 39 Fungi taxa were counted. The taxa which were observed are the following Cladosporium, Alternaria, Melanomma, Leptosphaeria, Ustilago, Pleospora, Exosporium, Penicillium/Aspergillus, Elipsoidal basidyospores, Epicoccum, Drechslera, Stemphylium, Multi-septate ascospores, 1-septate ascospores, Myxomycetes, Pithomyces, Torula, Didymella, Puccinia, Chaetomium, Curvularia, Non-septate ascospores, Oidium, Nigrospora, Periconia, Diatrypaceae, Venturia, Arthrinium, Xylaria, Agrocybe, Fusarium, Botrytis, Peronospora, Coprinus, Sporormiella, Tetracoccosporium, Exosporiella, Melanospora and Boletus. The concentration of spores which was determined in the atmosphere was 69,46% Cladosporium, 7,21% Alternaria, 2,98% Melanomma, 2,69% Leptosphaeria, 2,28% Ustilago, 2,15% Pleospora, 1,98% Exosporium, and the remaining 11.09% belong to 32 taxa which named as an others.
  • No Thumbnail Available
    Item
    Pollen morphology of selected allergenıc specıes at beşevler 10. Year campus, ankara unıversıty, Turkey
    (Ankara Üniversitesi Fen Fakültesi, 2020) Şahin, Aydan Acar; Biyoloji; Fen Fakültesi
    Although airborne pollen is invisible to the eye, it has been known as a major source to respiratory allergic reactions. For this reason, relationship between the morphological characteristics of airborne pollen and their potential tendency as an allergen are still obscure. In the present study, we selected 29 allergenic species at Beşevler 10. year campus and investigated their detail pollen characteristics using light and scanning electron microscopies. 11 of the allergic plants on campus are also important for beekeeping.
  • No Thumbnail Available
    Item
    Sedıment-frıendly formulas: a revıew on the sedıment qualıty guıdelınes
    (Ankara Üniversitesi Fen Fakültesi, 2020) ERGEN, Şeyda Fikirdeşici; Biyoloji; Fen Fakültesi
    Sediment pollution is dangerous because of the food web and finally becoming detrimental to organisms. Heavy metals can pass from soil to seed, making plants toxic. When organisms feed on this plant, larger animals feed on these organisms, by the time heavy metals get more effective in the process of biomagnification. It is a significant point to analyze the metal pollution in the sediment during the investigation of the contaminated aquatic environment. Measuring the abundance and structure of organisms in the area may demonstrate the sediment ecosystem health but these measurements are expensive and requires a lot of time. The ecological risk caused by heavy metals is about to be evaluated different “sediment quality standards” have been developed Aquatic ecosystems play an important role in maintaining ecological balance such as climate regulation, irrigation, flood control, aquaculture, and especially water supply. Sediments are located at the linkup of the solid-liquid interface, therefore they form an important part of the water body. The purpose of this review article is to reveal the importance of sediment pollution with heavy metals and understand how usage of accordingly sediment quality guidelines and indices.
  • No Thumbnail Available
    Item
    The fısh fauna of a karst sprıng; özlen stream (Antalya, Turkey)
    (Ankara Üniversitesi Fen Fakültesi, 2020) Ergönül, Mehmet Borga; Biyoloji; Fen Fakültesi
    Most of the ichthyological research in Turkish freshwaters are focused on large rivers. However, the fish fauna of small karst-springs is neglected. In such small karst-fed streams the downstream end of the underground flow reaches the surface and drain to the sea in a very short distance. In this study, the fish fauna of a karst-fed small stream, Özlen Stream, was investigated on a seasonal basis. A total of 8 fish species (Anguilla anguilla, Carassius gibelio, Squalius fellowesi, Oncorhynchus mykiss, Gambusia holbrooki, Mugil cephalus, Liza saliens and Salaria fluviatilis) were identified. Three of these fish species are exotic and invasive for Turkish freshwaters. C. gibelio and G. holbrooki, are considered a serious threat to natural fish populations in Turkey. Presence of such invasive fish species even in a small river indicates that they are expanding their distribution area in Turkey.