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Wyszukujesz frazę "ecological factor" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Seasonal Distribution of Benthic Foraminifera in Pangandaran Waters, Indonesia
Autorzy:
Yuliadi, L. P. S.
Nurruhwati, I.
Astuty, S.
Powiązania:
https://bibliotekanauki.pl/articles/1031757.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Benthic foraminifera
Pangandaran
ecological factor
environmental degradation
pollution
tourism
waste
Opis:
The rapid development of tourism in Pangandaran causes various problems such as environmental degradation, environmental pollution and waste problems. Environmental changes can be detected using the foraminifera community. The reasearch aims to analyze seasonal distribution of foraminifera in Pangandaran waters. This research uses the survey method and descriptive data analysis. Ecological factors (salinity, temperature, sediment, depth, pH, DO, clarity, waves and currents) have affected their distribution. Temperature values ranged between 26 to 30 ºC. Salinity values ranged between 15.6 to 31 ‰. The pH ranged from 5.47 to 8.75. The DO concentration varied between 5.43 and 9.7 ppm. The average clarity of Pangandaran waters in the west season ranges from 56 to 104.5 cm. In Pangandaran waters, the abundance of the Rotaliina sub-order reaches between 75% to 86.5%, Miliolina 11.6% to 19%, and Textulariina 0.05% to 13.4%.
Źródło:
World News of Natural Sciences; 2020, 29, 3; 225-239
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological risk assessment of heavy metals in soil developed on coastal marine sediment along coastal area in Anantigha, Calabar, Nigeria
Autorzy:
Aki, E. E.
Isong, I. A.
Powiązania:
https://bibliotekanauki.pl/articles/1076124.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ecological risk factor
geo-accumulation Index
heavy metal
pollution load index marine sediment
Opis:
Coastal areas in Anantigha are utilized as dumpsite for industrial and domestic wastes including effluent from local industries and inhabitants of the area despite their usage for crop cultivation. Thus, the present study was designed to assess the concentration, pollution load and ecological risk of heavy metal in Anantigha coastal area. Standard pollution indices such as contamination factor (Cf), degree of contamination, pollution load index (PLI), enrichment factor (EF), geo-accumulation index (Igeo) and ecological risk index were deployed to assess the level of heavy metals contamination in the area. The results showed that the sediment was acidic under dried conditions and low in conductivity. The mean concentration levels of all the heavy metals were lower than their mean background values except for Al. The orders of dominance for concentration of heavy metals were: Al>Fe>Mn>Cu>Zn (Station 1) and Al>Fe>Mn>Zn>Cu (Stations 2, 3 and 4). Analyzed data showed that the sediments in the area are contaminated with Al with Igeo result showing station 2 and 4 been moderately to heavily contaminated with Al while station 4 was heavily contaminated with aluminium. Station 1 had low degree of contamination, whereas station 2 and 4 had moderate degree of contamination, and station 3 showed considerable degree of contamination. The PLI result indicates unpolluted condition and the area were not enriched by the studied heavy metals as shown by EF values. Hence, the sediment in Anantigha coastal marine area was classified as having low ecological risk factor. However, the levels of these metals are not static; there is tendency for increase as a result of increased human input and activities. Hence, there is a need for regular soil testing.
Źródło:
World Scientific News; 2019, 116; 1-24
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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