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Ecological assessment of heavy metals accumulation in sediments and leaves of Avicennia marina along the Diu coast of the northeast Arabian Sea

Patale Varsha, Tank Jigna G.

Oceanologia

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2022

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No. 64 (2)

276--286

EN

The Coastal region of Diu is the natural habitat dominated by Avicennia marina mangrove species at the southeast coast of Saurashtra in Gujarat state of India. However, Diu being a famous industrial and tourism place survival of these mangrove species is threatened due to anthropogenic activities. In present studies, sediment and leaf samples of A. marina were collected from the Diu coast to evaluate the ecological threat of heavy metals accumulation in the marine habitat. There was remarkable presence of heavy metals such as copper, nickel, cadmium, chromium and lead in sediments and leaf samples of A. marina. The values of Biological concentration factors (BCFs) of heavy metals in leaf samples were high for cadmium, chromium and lead which suggest chelation of these heavy metals with biomolecules. The geo-accumulation index suggested that Site-4 and Site-5 were heavily contaminated with copper and nickel. The ecological risk index suggested that there is no significant effect of heavy metals on growth of plants in the mangrove ecosystem. Principal component analysis revealed that the samples collected from the natural habitats (Site-4 and Site-5) near the fishing and industrial areas were the main sources of heavy metal contamination. Hence, it was concluded that the concentration of heavy metals in the studied ecosystem had limited impact on growth of plants at Site-1, Site-2 and Site-3. However, growth of plants at Site-4 and Site-5 were threatened due to the toxic effect of copper and nickel present in its sediments.

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Macrophytes as a tool for assessing the trophic status of a river: a case study of the upper Oum Er Rbia Basin (Morocco)

Nouri Ayoub, Soumaya Hammada, Lahcen Chillasse, Abdelmajid Haddioui

Oceanological and Hydrobiological Studies

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2021

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Vol. 50, No. 1

77--86

EN

Macrophytes are one of the main components of the aquatic ecosystem. They are used in several countries as metrics for the ecological assessment of hydrosystems. The objective of our study was to evaluate the suitability of the Macrophyte Biological Index for Rivers (IBMR) to determine a trophic level in the upper Oum Er Rbia basin (Morocco) and to understand physicochemical parameters of water that govern the distribution of macrophyte species. CCA analysis was used to relate the distribution of macrophytes to hydrochemical parameters of water. The CCA analysis shows that the distribution of macrophytes was more correlated with abiotic parameters (EC, WT and DO) than nutrient parameters (PO4-P, NO3-N, NO2-N, NH3-N and CODMn). The recorded values of IBMR in the upper Oum Er Rbia basin indicate that the trophic level of the studied rivers ranged from “moderate” to “very high”. Pearson’s correlation coefficient showed that the IBMR is more correlated with the abiotic parameters such as WT and EC and does not show any significant correlation with the content of PO4-P and NH3-N in water, which makes the IBMR index unreliable for assessing the trophic status related to phosphate and ammonia concentrations in our lotic waters.

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Ecological Evaluation of Sustainable Development in the Studied Farms of Przysucha County

Niewęgłowski M., Gugała M., Włodarczyk B., Sikorska A.

Journal of Ecological Engineering

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2018

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Vol. 19, nr 6

146--152

EN

The subject of the research involved the agricultural farms from the Przysucha county (Masovian Voivodeship, Poland). The assessment of ecological results from farms was the purpose of the thesis. Evaluation was made by using selected indicators: minerals balance, soil's organic substances balance and vegetation cover of soil's index. The research was carried out among 100 chosen agricultural farms, situated on light soil, i.e. rye soil. The ecological assessment of the examined farms showed that all of minerals balances (N, P, K) and soil's organic substances balances were positive. In the case of nitrogen, balances exceeded the limit value 30 kg N·ha-1. Vegetation cover of soil's index, as regards arable land, did not reach the recommended value, i.e. at least 60%. However, the cover of utilised agricultural area soil was similar to the recommended level (>70%). That was because of the large orchards and permanent crops share in horticultural farms, as well as large permanent grassland share in bovine and mixed farms.

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Wpływ parametrów akustycznych na ocenę ekologiczną budynków

Nowoświat A., Olechowska M., Ślusarek J.

Materiały Budowlane

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2017

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nr 5

67--68

PL

Certyfikacja polega głównie na wielokryterialnej ocenie budynków, w tym również ocenie hałasu i komfortu akustycznego. W polskim prawodawstwie komfort akustyczny jest traktowany dużo mniej rygorystycznie niż np. komfort termiczny i oszczędność energii. Podczas projektowania tzw. zielonych budynków, przede wszystkim biurowych czy oświatowych, przywiązuje się pewną wagę do takich parametrów jak czas pogłosu czy wskaźnik transmisji mowy. W artykule omówiono parametry akustyczne wymagane w ocenie ekologicznej. Spośród wielu powszechnie stosowanych systemów na świecie zaprezentowano brytyjski system BREEAM oraz amerykański system LEED.

EN

Certification is mainly based on multi-criteria assessment of buildings, including the assessment of noise and acoustic comfort. In the Polish legislation, acoustic comfort is regarded considerably less strictly than, for example, thermal comfort and energy savings. However, in the process of design of so-called “green buildings”, in particular office and educational buildings, some importance is attached to parameters such as reverberation time or speech transmission index. The article presents the required, in the environmental assessment, acoustic parameters. Among the many commonly used systems in the world, two were selected for discussion: the British system BREEAM and American system LEED.

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Narzędzia wspomagające proces rewitalizacji budynków publicznych zgodnie z zasadami zrównoważonego rozwoju

Węglarz A.

Materiały Budowlane

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2013

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nr 9

78--81

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Ocena ekologiczna, klasyfikacja i sposoby postępowania z odpadami mas formierskich z żywicą furanową Askuran FH 040

Smoliński A., Pucka G., Asłanowicz M.

Archiwum Odlewnictwa

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2004

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R. 4, nr 13

205--210

PL

W ramach pracy dokonano oceny ekologicznej kwarcowej masy samoutwardzalnej, w której układ wiążący złożony był z żywicy furanowej Askuran FH 040 i utwardzacza GS II. Formę próbną zalano siluminem i żeliwem szarym. Podstawę oceny ekologicznej odpadu stanowiły wyniki analizy wyciągu wodnego z odpadu i wyniki analizy bezpośredniej próbki odpadu. Odpady zostały zakwalifikowane do kodu 10 09 05 i 10 10 05. Opisane kody nie figurują na liście odpadów niebezpiecznych.

EN

Within the scope of the work completed has been an ecological assessment of self-curing quartz moulding sand in which the binding system was composed of the Askuran FH 040 furane resin and the Härter GS II curing agent. The test mould has been poured with silumin and grey iron. The analysis results for a water extract from the waste and the results of direct analysis of a waste sample provided the basis of ecological assessment of the waste. The wastes have been qualified under the codes of 10 09 05 and 10 10 05. The discussed codes have not been include in the list of hazardous wastes.