Wyniki wyszukiwania - BazTech

1

Evaluation of Surface Water Quality Using Biodiversity Indices in Phu My Species – Habitat Conservation Area, Kien Giang Province, Vietnam

Nhien Huynh Thi Hong, Giao Nguyen Thanh

Ecological Engineering & Environmental Technology

|

2024

|

Vol. 25, iss. 3

102-112

EN

Phu My species-habitat conservation area (PMCA) is a seasonal wetland area; thus, water quality plays an essential role in the development of organisms. Therefore, the study was carried out to assess surface water quality based on phytoplankton, zooplankton and benthic composition at PMCA, which has been little studied. The phytoplankton, zooplankton and benthic samples were collected at six locations (N1-N6) of the habitats and canals in November 2021. Shannon-Wiener biodiversity index (H’), Pielou index (J) and average score per taxon (ASPT) were used to assess pollution levels of surface water. A total of 71 species of phytoplankton belonging to five phyla (i.e., Chlorophyta, Euglenophyta, Bacillariophyta, Dinophyta and Chrysophyta), 57 species of zooplankton belonging to three phyla (i.e., Protozoa, Rotifera, Arthropoda) and two benthic species belong to two groups (i.e., Oligochaeta and Insecta) were detected. The phyla of Euglenophyta, Rotifera, and Insecta were the dominant groups in species composition and the phyla of Chlorophyta, Protozoa, and Insecta were dominated in terms of individual density. Species of Trachelomonas volvocina, Phacus torta, Euglena oxyuris, Arcella vulgaris, Brachionus bidentata, Lecane hastata, Lecane bulla, Lecance pyriformis and Polyarhtra vulgariis appeared at most of the studied sites, indicating the organic and nutrient pollution of the water bodies. The Shannon-Wiener biodiversity index (H’) and Pielou index (J) showed the water quality from moderate to severe pollution. The results of water quality classification according to ASPT and H’ of benthic animals had similar characteristics, indicating that the surface water is very dirty (heavy pollution). The current findings could be used to manage water quality in the future to conserve biodiversity. Furthermore, it helps to improve and expand methods for monitoring surface water quality in the conservation area, in addition to evaluating based on physical and chemical parameters.

2

Ryjkowce (Coleoptera: Curculionoidea) jako wskaźniki waloryzacji przyrodniczej środowisk antropogenicznych w polskiej części Karpat Zachodnich

Wiorek M., Knutelski S.

Polish Journal for Sustainable Development

|

2018

|

T. 22, cz. 1

107--116

PL

Praca przedstawia bogactwo i liczebność gatunków oraz strukturę dominacyjną, a także wartości wskaźników bioróżnorodności Shannona-Wienera (H’), Bergera-Parkera (d) i wartości faunistycznej (FV) 10 różnych zgrupowań ryjkowców występujących w środowiskach antropogenicznych pięciu regionów polskiej części Karpat Zachodnich w aspekcie zastosowania tych roślinożernych chrząszczy do waloryzacji przyrodniczej. Badania w 2016 roku zostały przeprowadzone metodą czerpakowania ilościowego. Wyniki wskazują na zróżnicowany stopień degradacji badanych biotopów. Środowiska silniej przekształcone charakteryzują się niższymi wartościami analizowanych indeksów w porównaniu z biotopami mniej zmienionymi. Zastosowanie wskaźnika FV pozwala na dostrzeżenie także walorów faunistycznych gatunków, a wraz z indeksami bioróżnorodności na lepsze oszacowanie wartości przyrodniczej danego biotopu. Wyniki badań potwierdzają użyteczność ryjkowców jako wskaźników oceny przemian środowiskowych.

EN

The paper presents species richness and abundance, domination structure, values of Shannon-Wiener (H ') and Berger-Parker biodiversity indices (d), as well as fauna value index (FV) of 10 different weevil assemblages occurring in anthropogenic environments of five regions in Polish part of the Western Carpathian Mts., in aspect of the use of these herbivorous beetles for environmental assessment. The study in 2016 was carried out using the quantitative sweep net method. The results show a diversified extent of degradation of the studied biotopes. Environments more changed have lower values of the analyzed indices in comparison with less modified biotopes. The application of the FV index allows also to know the fauna values of species, and together with biodiversity indices, for a better assessment of the nature value of a given biotope. The results of the study support the usefulness of weevils as indicators for assessment of environmental changes.

3

Phytoplankton of humo-eutrophic Lake Plotycze (Sobiborski Landscape Park, Eastern Poland)

Pęczuła W., Zykubek A.

Oceanological Studies

|

1998

|

Vol. 27, No. 2

45-50

EN

Phytoplankton structure (abundance, taxonomical structure, species diversity) as well as physico-chemical factors (tem-perature, pH, electrolytic conductivity, oxygen concentration) were observed in a natural, shallow, small lake. The comparison of three zones within the studied lake showed distinct trophic differentiation. The biodiversity indices, which were used in this analysis, appeared to be useful in determining the lake functions.