نتایج جستجو برای: bioindicator

تعداد نتایج: 843  

Journal: :Journal of the South African Veterinary Association 2008
J G Myburgh C J Botha D G Booyse F Reyers

Pollution affects aquatic systems worldwide and there is an urgent need for efficient monitoring. Fish are generally sensitive to their environment and are thus considered to be valuable bioindicator species. The African Sharptooth catfish (Clarias gariepinus) is particularly important in this respect because of its very wide distribution. In order to use C. gariepinus as a bioindicator species...

2013
K. Pillay

The purpose of this study was to evaluate the use of mucus production as a biomarker. This was done by exposing the mussel Perna perna to various sublethal concentrations of Cu. Mussels are effective as a bioindicator species as they accumulate Cu in their tissues. Differences in mucus production rates were evaluated at different Cu concentrations. The findings of this study indicate that incre...

Journal: :iranian journal of toxicology 0
اسما محمدکرمی asma mohammad karami department of marine biology sciences, tarbiat modares university, noor, mazandaran, iran.‎ علیرضا ریاحی بختیاری alireza riyahi bakhtiari department of environmental sciences, tarbiat modares university,‎‏ ‏noor, mazandaran, iran.‎ علی کاظمی ali kazemi department of environmental sciences, tarbiat modares university,‎‏ ‏noor, mazandaran, iran.‎ نبی اله خیرآبادی kheirabadi kheirabadi department of marine biology sciences, tarbiat modares university, noor, mazandaran, iran.‎

background: persian gulf is a semi-closed environment which is affected by pollution ‎from heavy metals. entrance of heavy metals to the water column and binding to ‎sediment particles can affect the benthic organisms that can accumulate these ‎materials in their body. noticing this ability, mussels are considered as bio-monitoring ‎agents.‎ methods: the pearl oyster, pinctada radiate, and sedi...

2017
Aleksandra Samecka-Cymerman Krzysztof Kolon Alexander J. Kempers

Concentrations of the elements Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, N, Ni, P, Pb, and Zn were measured in needles and bark of Taxus baccata from the urban environment of Wrocław, Poland, and from a control site relatively free from pollution. In Wrocław the concentrations of N, P, K, and Mg in needles were significantly higher than in bark, but concentrations of Cd, Co, Cr, Cu Fe, Ni, and Zn were...

2016
Samantha Lee Richard Hung Guohua Yin Maren A. Klich Casey Grimm Joan W. Bennett

In this paper, we demonstrate the ability of Arabidopsis thaliana to detect different mixtures of volatile organic compounds (VOCs) emitted by the common indoor fungus, Aspergillus versicolor, and demonstrate the potential usage of the plant as a bioindicator to monitor fungal VOCs in indoor air. We evaluated the volatile production of Aspergillus versicolor strains SRRC 108 (NRRL 3449) and SRR...

2015
I. Uzonur E. Muftuoglu

The identification and quantification of individual algal species remains difficult, time consuming, requiring a great deal of expertise and experience. Alternative to traditional, morphology-based methods, molecular techniques need less expertise for the detection of cryptic species within the bioindicator community. Although these methods require detailed knowledge of the molecular diversity ...

2006
Meliha Gemici Yusuf Gemici Kit Tan

One-, twoand three-year-old red pine (Pinus brutia var. brutia) needles and tree bark samples were collected and analyzed for their sulphur content from localities where dead trees were observed. The results indicate that the sulphur content has increased in localities exposed to high levels of SO2 emission. The highest increase was observed in two-year-old needles. We thus conclude that the su...

Journal: :Journal of Degraded and Mining Lands Management 2021

This study aimed at determining the community structure and diversity of soil bacteria in several land-use changes as an environmental bioindicator. research was conducted areas intensive agriculture (PI), monoculture abandoned old-coffee plantation (KTT), mixed-young coffee (HLS), secondary forest/reference site (RS) UB Forest (UBF) area, Malang, Indonesia. Soil samples were taken a composite ...

Journal: :Revista de Ciências Agrarias - Amazon Journal of Agricultural and Environmental Sciences 2015

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