Temat: taxonomic composition - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Leech communities in the upper reaches of the Stepnica River (nw Poland)
Autorzy:: Raczyńska, M.
Chojnacki, J C
Hałupka, M
Powiązania:: https://bibliotekanauki.pl/articles/124029.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: taxonomic composition of leeches
instantaneous flow
hydrochemical indicators
Opis:: The paper describes taxonomic composition of leeches (Hirudinea) in the strongly anthropogenically altered upper reaches of the Stepnica River in Western Pomerania. The numbers of respective species of the Hirudinea were analyzed in the context of such environmental factors as: instantaneous flow, dissolved oxygen content, and calcium content. It was noted that most leech species inhabited the headstream, and factors deterrent to their occurrence included the presence of hydrogen sulfate and siltation.
Źródło:: Journal of Ecological Engineering; 2014, 15, 3; 70-75
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Zooplankton structure in high latitude fjords with contrasting oceanography (Hornsund and Kongsfjorden, Spitsbergen)
Autorzy:: Ormanczyk, M.R.
Gluchowska, M.
Olszewska, A.
Kwasniewski, S.
Powiązania:: https://bibliotekanauki.pl/articles/47860.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: zooplankton
stock size
Hornsund Region
Kongsfjorden
Spitsbergen
taxonomic composition
size structure
biogeography
hydrography
trophic relation
Atlantic water
environment change
Opis:: Zooplankton inhabiting the Hornsund and Kongsfjorden fjords on Spitsbergen (Svalbard) were investigated in summer 2013. The goal of the study was to determine how the zooplankton communities vary in environments functioning under different oceanographic regimes. Sampling was conducted with nets of different mesh size and selectivity (56 μm WP-2, 180 μm MultiNet, and 1000 μm Tucker Trawl), which permitted comparing a wide size spectrum of zooplankton components. Species composition did not differ substantially between the fjords, but the zooplankton in Hornsund was almost two times less numerous, and it had lower biomass per unit volume. The highest abundance at both sites was in the smallest zooplankton size fraction found only in samples taken with 56 μm mesh WP-2 net. These comprised as much as 71% and 58% of the total zooplankton abundance in Hornsund and Kongsfjorden, respectively. The communities in both fjords had comparable contributions of Arctic and boreo-Arctic species biomass in the year of the study. However, the comparison of zooplankton characteristics over several years showed changes in abundance and biogeographic structure that corresponded with variations in the physical environments of the fjords. The results of the study permit predicting the possible effects of the increasing influence of Atlantic waters on zooplankton communities inhabiting Arctic marine pelagic ecosystems.
Źródło:: Oceanologia; 2017, 59, 4
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Characteristic of heterotrophic bacteria inhabiting the Gulf of Gdansk
Charakterystyka bakterioplanktonu zasiedlającego Zatokę Gdańską
Autorzy:: Mudryk, Z.
Powiązania:: https://bibliotekanauki.pl/articles/84809.pdf
Data publikacji:: 2003
Wydawca:: Akademia Pomorska w Słupsku
Tematy:: heterotrophic bacteria
bacteria number
taxonomic composition
organic matter transformation
Gdansk Gulf
marine ecosystem
biological balance
Źródło:: Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2003, 06
1643-0115
Pojawia się w:: Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:: Biblioteka Nauki

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