Temat: mesozooplankton - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Factors describing the distribution of the zooplankton community in the Gulf of Finland in the context of interactions between native and introduced predatory cladocerans
Autorzy:: Pollumae, A.
Kotta, J.
Powiązania:: https://bibliotekanauki.pl/articles/48106.pdf
Data publikacji:: 2007
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: zooplankton
temperature
mesozooplankton
Leptodora kindtii
salinity
phytoplankton
distribution
Cercopagis pengoi
eutrophication
Opis:: Mesozooplankton communities were studied monthly at six sites in the Gulf of Finland during six ice-free seasons. The abundances of different zooplankton taxa were related to temperature, salinity, eutrophication level (total nitrogen and phosphorus), phytoplankton (Chl a) and density of predatory cladocerans, including the non-indigenous Cercopagis pengoi and the native Leptodora kindtii. T he results indicated that variability in the zooplankton communities was correlated not only with predation by mesozooplankton but also with bottom-up effects. Predation by the non-indigenous C. pengoi may significantly affect the dynamics of Cladocera and Rotatoria in the Gulf of Finland during the summer season.
Źródło:: Oceanologia; 2007, 49, 2
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Gelatinous zooplankton – a potential threat to the ecosystem of the Puck Bay (the southern Baltic Sea, Poland)
Zooplankton galaretowaty – potencjalne zagrożenie dla ekosystemu Zatoki Puckiej (Bałtyk Południowy, Polska)
Autorzy:: Olenycz, M.
Powiązania:: https://bibliotekanauki.pl/articles/111397.pdf
Data publikacji:: 2015
Wydawca:: Instytut Morski w Gdańsku
Tematy:: gelatinous zooplankton
Puck Bay
Aurelia aurita
mesozooplankton
zooplankton galaretowaty
Zatoka Pucka
mezozooplankton
Opis:: Gelatinous zooplankton is a group of organisms, which in recent decades has become one of the most important elements to shape the marine ecosystem. Their growing numbers and spreading to the new marine regions, in combination with the high feeding rate, causes significant changes in the flow of energy in the food webs. The only regularly-occurring gelatinous zooplankton species in the Puck Bay area is scyphozoan Aurelia aurita, most abundant in the summer and fall seasons. As shown in Barz and Hirche’s (2005), Möller’s (1980a), Schneider’s (1989), and Schneider and Behrends’ (1994) studies, the abundance of jellyfish in Bornholm Basin and Kiel Bight was several times lower than that in Puck Bay. Nevertheless, the authors of these studies concluded that the population of A. aurita can significantly reduce mesozooplankton and fish resources by preying on their larvae and eggs. Taking this into account, it is possible that the impact of A. aurita medusae on the Puck Bay ecosystem is even higher than in other parts of the Baltic Sea. Verification of this thesis requires detailed investigation; the scope of which should include investigation of: A. aurita food selectivity and long-term mesozooplankton, and A. aurita medusae abundance. The aim of this study, based on the few data in the literature, is to estimate if the gelatinous zooplankton is also an important element of the .
Zooplankton galaretowaty to grupa organizmów, która w ostatnich dekadach stała się jednym z najważniejszych elementów kształtujących ekosystemy morskie. Ich rosnąca liczebność i rozprzestrzenianie się na nowe akweny w połączeniu z wysokim tempem żerowania, powodują istotne zmiany w przepływie energii w sieciach troficznych. Celem pracy była próba zbadania, na podstawie nielicznych danych literaturowych i własnych danych niepublikowanych, czy zooplankton galaretowaty jest również istotnym elementem ekosystemu Zatoki Puckiej. Jedynym regularnie występującym w tym akwenie gatunkiem z tej grupy zwierząt jest Aurelia aurita, która w miesiącach lata i jesieni występuje w wysokiej liczebności (Olenycz – dane niepublikowane). W przypadku Basenu Bornholmskiego i Zatoki Kilońskiej stwierdzono (Möller 1980a, Schneider 1989, Schneider and Behrends 1994, Barz and Hirche 2005), że liczebność meduz była około kilkukrotnie mniejsza niż w przypadku Zatoki Puckiej. Tym niemniej autorzy tych badań uznali, że populacja tego gatunku może znacząco redukować zasoby mezozooplanktonu i ryb, poprzez żerowanie na ich larwach i ikrze. Potencjalnie więc, wpływ meduz A. aurita Zatoki Puckiej jest większy niż w przypadku innych rejonów Bałtyku. Jednak aby potwierdzić tę tezę należy przeprowadzić kompleksowe badania, które swym zakresem objęłyby długoterminowe analizy wybiórczości pokarmowej meduz A. aurita oraz zmian liczebności mezozooplanktonu i meduz A. aurita.
Źródło:: Biuletyn Instytutu Morskiego w Gdańsku; 2015, 30, 1; 78-85
1230-7424
2450-5536
Pojawia się w:: Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Low-active high-density Noctiluca scintillans cells in surface seawater
Autorzy:: Tada, K.
Asahi, T.
Kitatsuji, S.
Nomura, M.
Yamaguchi, H.
Ichimi, K.
Powiązania:: https://bibliotekanauki.pl/articles/2079194.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: Noctiluca scintillans
cell
dinoflagellate
mesozooplankton
adenosine triphosphate
sea surface
surface water
activity
Opis:: Noctiluca scintillans is an important member of the mesozooplankton in terms of biomass and production in the Seto Inland Sea, Japan. The densities and adenosine triphosphate (ATP) contents of N. scintillans cells were measured. Vertical profiles of N. scintillans cellular activity in the coastal water were determined and the ATP contents were high at middle layers, with a maximum depth of 10 m. ATP contents were low in the surface and lower layers. These results suggest that active N. scintillans cells in subsurface layers with low density play an important role in the coastal ecosystem, and high-density cells in the surface water are not active.
Źródło:: Oceanologia; 2020, 62, 3; 402-407
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Impact of human-altered hydrographical setting on the copepod community structure in an extensive tropical estuary along the Southwest Coast of India
Autorzy:: Nagarathinam, A.
Retnamma, J.
Loganathan, J.
Singaram, P.
Arayillath, A.
Jose, A.K.
Powiązania:: https://bibliotekanauki.pl/articles/2079004.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: mesozooplankton
copepod
multivariate analysis
saline water
sea water intrusion
aquatic environment
tropical estuary
India coast
Opis:: This study presents how human-altered hydrographical settings (flow restrictions) impacts the natural distribution and community structure of copepods in the Kochi Backwaters (KBW), the largest monsoonal estuary along the southwest coast of India. This study is primarily based on an extensive seasonal sampling in the KBW and their comparison with a historical data set. Thannermukkom Barrage (TB) was built in the southern section of the KBW in the 1970s to prevent saline water intrusion to the upstream during the non-monsoon periods. Thirteen locations (1—4 in the downstream, 5—9 in the midstream, and 10—13 in the upstream) were sampled in this study over the entire stretch of the KBW during the Pre-Southwest Monsoon (PRM), Southwest Monsoon (SWM), and Post-Southwest Monsoon (PSWM). The overall effect of TB in the KBW is a seaward push of mesohaline conditions during all seasons with varying intensities. In response to the seaward push of mesohaline conditions, copepods Acartiella keralensis, Acartia plumosa, Acartia sp., Pseudodiaptomus annandalei, Pseudodiaptomus serricaudatus, Euterpina acutifrons and Oithona brevicornis showed a corresponding spatial shift for their highest abundance and diversity from midstream during PRM to the downstream during the SWM/PSWM. Multivariate and IndVal analysis demarcated many indicator species of copepods of different hydrographical settings in the KBW. A comparison with the historical data set showed that there is an apparent long-term change in hydrography, copepod composition and community structure in the upstream of the KBW due to TB.
Źródło:: Oceanologia; 2021, 63, 1; 115-132
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Environmental study of the seasonal succession of mesozooplankton in a brackish water Odra River estuary during 2003–2005
Autorzy:: Chojnacki, J.C.
Tyluś, K.
Powiązania:: https://bibliotekanauki.pl/articles/123782.pdf
Data publikacji:: 2013
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: Baltic Sea
II row Odra River estuary (Szczecin Lagoon)
mesozooplankton
annual catch of fish
cormorants
Opis:: The entire estuary water is dominated by the discharge of the River Odra into the Szczecin Lagoon. The water body is brackish and the salinity in the central part ranges 0.5 and 2 PSU. The Lagoon has a long eutrophication history; usually, two phytoplankton biomass peaks are observed: Diatoms in spring and blue-green algae in summer. The recent data on zooplankton is limited. Rotifers and Cladocerans supply the bulk of the zooplankton biomass. The ichtiofauna is composed of fresh and brackish water, migratory and marine species. Zooplankton and water samples were collected during 2003–2005. The results suggest that during 10 season’s climate in Odra River estuary, Cladocera were the dominant group, large impact on the density of mesozooplankton were: Daphnia cucullata and Daphnia longispina, Copepoda played a lesser role in the Odra River estuary than Cladocera. Biomass of mesozooplankton from the Lagoon was significantly higher compared with the biomass of mesozooplankton from Odra River estuary, which could be related to a greater inflow of nutrients into the Lagoon and the increased growth of phytoplankton, which forms an excellent first stage food web for herbivorous and carnivorous zooplankton, and fish and consequently cormorants.
Źródło:: Journal of Ecological Engineering; 2013, 14, 2; 12-25
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Short-term and seasonal variability of mesozooplankton at two coastal stations (Gdynia, Sopot) in the shallow water zone of the Gulf of Gdańsk
Autorzy:: Jozefczuk, A.
Guzera, E.
Bielecka, L.
Powiązania:: https://bibliotekanauki.pl/articles/48833.pdf
Data publikacji:: 2003
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: zooplankton
Sopot
mesozooplankton
Gdynia
coastal station
seasonal variation
short-term variability
Gdansk Gulf
shallow water zone
Opis:: The idea of the study was to describe short-term and seasonal variations in the composition and abundance of zooplankton in the coastal area of the Gulf of Gdańsk at two shore stations and the influence of selected environmental factors (temperature, salinity, wind velocity) on it. The studies were based on material collected in the shallow waters of the Gulf of Gdańsk from stations located by the Marine Promenade (Bulwar Nadmorski) in Gdynia and the pier in Sopot. Samples were collected in 2001 mainly at weekly intervals using an open-type plankton net. Environmental parameters were measured at the same time. The zooplankton at the Gdynia and Sopot stations consisted of 30 taxa; Rotatoria, Copepoda and meroplankton were dominants. There was a much higher percentage of Rotatoria and a lower percentage of meroplankton at Sopot than at Gdynia. Considerable differences were apparent in the numbers of particular groups of zooplankton at these stations in the same periods. Simpson’s biodiversity index, here based on the zooplankton of the shallow waters off Gdynia and Sopot, was relatively high most of the time. Diversity of mesozooplankton was greatest in July and October. There was a significant correlation between the abundance of mesozooplankton and environmental factors in the case of cladoceran and polychaete larvae. Frequent studies at stations located close to each other illustrate the highly dynamic range of variations occurring in the coastal area: the concentrations of particular organisms fluctuated very considerably from one week to another, even by a factor of several dozen. Nevertheless, the statistically mean numbers of zooplankton at both stations are comparable.
Źródło:: Oceanologia; 2003, 45, 2
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki