Pregled bibliografske jedinice broj: 1165003
INVASIVE FISH SPECIES HAVE A NEGATIVE EFFECT ON ZOOPLANKTON ASSEMBLAGES IN SHALLOW WATER BODIES
INVASIVE FISH SPECIES HAVE A NEGATIVE EFFECT ON ZOOPLANKTON ASSEMBLAGES IN SHALLOW WATER BODIES // 4. HRVATSKI SIMPOZIJ O INVAZIVNIM VRSTAMA s međunarodnim sudjelovanjem, Zbornik sažetaka / 4th CROATIAN SYMPOSIUM ON INVASIVE SPECIES With International Participation, Book of Abstracts / Jelaska, Sven (ur.).
Zagreb, 2022. str. 41-41 (predavanje, međunarodna recenzija, sažetak, znanstveni)
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Naslov
INVASIVE FISH SPECIES HAVE A NEGATIVE EFFECT ON
ZOOPLANKTON ASSEMBLAGES IN SHALLOW WATER BODIES
(INVASIVE FISH SPECIES HAVE A NEGATIVE EFFECT ON
ZOOPLANKTON ASSEMBLAGES IN SHALLOW WATER BODIES)
Autori
Dražina, Tvrtko ; Špoljar, Maria ; Sertić Perić, Mirela ; Bilić, Žanet ; Kuczyńska-Kippen, Natalia ; Tkalčec, Ines
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
4. HRVATSKI SIMPOZIJ O INVAZIVNIM VRSTAMA s međunarodnim sudjelovanjem, Zbornik sažetaka / 4th CROATIAN SYMPOSIUM ON INVASIVE SPECIES With International Participation, Book of Abstracts
/ Jelaska, Sven - Zagreb, 2022, 41-41
Skup
4. hrvatski simpozij o invazivnim vrstama = 4th Croatian Symposium on Invasive Species
Mjesto i datum
Zagreb, Hrvatska, 29.11.2021. - 30.11.2021
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Rotifera, Cladocera, Copepoda, “top-down” factors
Sažetak
Freshwater zooplankton (Rotifera, Cladocera, and Copepoda) is an essential component of the biocoenosis in lentic ecosystems as it has a key role in transfer of energy, nutrients, and primary food particles (detritus and phytoplankton) to higher trophic levels (fish). Both “bottom-up” and “top-down” regulations can influence zooplankton species composition, density, and biomass. Here we present results of our investigation conducted in different shallow water bodies in the Mediterranean region of Croatia (Europe): Vrana Lake near Biograd na Moru, and twenty-one permanent and semi-permanent ponds along the coast and islands of the Adriatic Sea. We sampled zooplankton together with macrozoobenthos, fish, macrophytes, and physico-chemical parameters. The main aims were to determine the impact of top predators (fish) and other biotic and abiotic factors on zooplankton structure in the investigated shallow lakes and ponds. Overall, rotifers dominated in zooplankton, followed by cladocerans and copepods. In habitats with invasive fish species, zooplankton density, biomass, and diversity were strongly reduced. Fish presence negatively affected Cladocera and Copepoda. Rotifers were not under direct fish predation, and their assemblage was shaped by other biotic (e.g., macrophyte stands) and abiotic (e.g., increased salinity) factors. Our results indicate strong “top-down” regulation of zooplankton in shallow water bodies harbouring invasive fishes, primarily by excluding large- bodied algivorous cladocerans. Thus, invasive fishes promote phytoplankton growth, preventing zooplankton from maintaining a clear water state of investigated habitats, and deteriorating ecological functioning of shallow water bodies, particularly in warmer climate.
Izvorni jezik
Engleski
Znanstvena područja
Biologija
