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Wyszukujesz frazę "benthic macroinvertebrates" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Diversity of Fish and Zoobenthic Communities in Lowland River Related to the Factors of Hydromorphological, River Continuum and Pollution Disturbances
Autorzy:
Golski, Janusz
Dajewski, Krzysztof
Urbańska, Maria
Andrzejewski, Wojciech
Runowski, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/2069890.pdf
Data publikacji:
2021
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
lowland stream
anthropopressure
fish fauna
benthic macroinvertebrates
biodiversity
Opis:
The response of zoobenthos and ichthyofauna to different levels of habitat degradation was estimated on a small lowland river. The level of fragmentation, the hydromorphological modifications of the watercourse bed, and the water quality of different river stretches were assessed as proxies of the degree of anthropogenic transformation of habitats. The degree of fauna similarity between the study sites, as well as the relationships between habitat quality and biotic indexes were estimated. A strong response of both assemblages to changes in environmental conditions was demonstrated, however, reaction to individual pressures differs. This confirms that these organisms are excellent, universal bioindicators and both groups should be used together. The key role of a well developed riparian zone in shaping the diversity of freshwater biota has also been demonstrated.
Źródło:
Rocznik Ochrona Środowiska; 2021, 23; 845--867
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the aquatic environment quality of high Andean lagoons using multivariate statistical methods in two contrasting climatic periods
Autorzy:
Custodio, M.
Peñaloza, R.
Chanamé, F.
Yaranga, R.
Pantoja, R.
Powiązania:
https://bibliotekanauki.pl/articles/123478.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
aquatic environment
high Andean lagoons
benthic macroinvertebrates
water quality
Opis:
The quality of the aquatic environment of high Andean lagoons was evaluated by means of multivariate statistical methods in two contrasting climatic periods. The water samples and benthic macroinvertebrates were collected in 22 sampling sites during the rainy and dry seasons. In each lagoon DO, DTS, EC, temperature and pH were determined in situ. The results revealed that the physicochemical parameters comply with the environmental quality standards for water, except COD and BOD5. In the PCA of the physicochemical parameters, the first two axes explained 73% of the total variation. The gradual analysis in pairs showed significant differences. The SIMPER analysis determined an average of four families of benthic macroinvertebrates per lagoon that showed more than 70% contribution. The ANOSIM revealed that Tragadero lagoon differs significantly from the others. The DistLM showed a value of 0.46 of coefficient of determination. Therefore, the quality of the environment of high Andean lagoons evaluated by means of multivariate statistical methods presents important differences or dissimilarities not only in the physicochemical characteristics of the water, but also in the composition of the benthic macroinvertebrate communities.
Źródło:
Journal of Ecological Engineering; 2018, 19, 6; 24-33
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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