Benthic invertebrates in floodplain lakes of a polish river: structure and biodiversity analyses in relation to hydrological conditions
PBN-AR
Instytucja
Wydział Biologiczno-Chemiczny (Uniwersytet w Białymstoku)
Informacje podstawowe
Główny język publikacji
angielski
Czasopismo
Polish Journal of Environmental Studies
ISSN
1230-1485
EISSN
Wydawca
HARD
DOI
URL
Rok publikacji
2014
Numer zeszytu
5
Strony od-do
1679-1689
Numer tomu
12
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
1,54
Słowa kluczowe
angielski
zoobenthos;
oxbow lakes;
water quality;
hydrological connectivity;
Biebrza River
Streszczenia
Język
angielski
Treść
Our study was carried out in the middle basin of the Biebrza River (NE Poland) in the periods of June and September in 2011 and 2012. From among numerous side-arms, four objects have been selected for analy- ses of macrozoobenthos structure and biomass. Two lakes exhibited a lentic character due to a long-lasting iso- lation from the river channel, one presented a lotic, and one was of a semi-lotic character. Differentiated hydro- logical conditions within the study period enabled comparative studies: in 2011 appeared low and high water levels, while in 2012 no low water appeared and high water levels prevailed, which influenced the wetland conditions and inhabiting aquatic zoocenoses. During the study 352 individuals of benthic invertebrates with a total biomass of 288 g of wet weight were collected. Among the studied lakes we found the highest values of biodiversity indices in a lotic reservoir, while the highest densities and biomasses were in a semi-lotic reser- voir. Nevertheless, the composition and abundance of benthic invertebrates in the studied lakes differed sig- nificantly from type-specific communities found in the floodplain lakes in other regions. A substantially lower level of macrozoobenthos diversity in floodplain lakes of the Biebrza River is indicative of less favorable con- ditions for macrozoobenthos development due to frequent water level fluctuations.
Cechy publikacji
publikacja naukowa oryginalna
Inne
System-identifier
000036375