Temat: water stream - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Water flowing down from Trzciagowska Valley to Wicko Male Lake chemical investigation (buffer protection zone and reservoir of Wolin National Park)
Badania chemizmu wód strumienia spływajacego z Doliny Trzciągowskiej do jeziora Wicko Male (tereny otuliny i akwen Wolińskiego Parku Narodowego)
Autorzy:: Poleszczuk, G.
Jakubiak, E.
Grzegorczyk, K.
Powiązania:: https://bibliotekanauki.pl/articles/84926.pdf
Data publikacji:: 2004
Wydawca:: Akademia Pomorska w Słupsku
Tematy:: water flow
Trzciagowska Valley
Lake Wicko Male
chemical investigation
buffer protection zone
water reservoir
Wolin National Park
fresh water
water quality
water source
stream
Wolin Island
Źródło:: Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2004, 08
1643-0115
Pojawia się w:: Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Change in N and P concentrations in Antarctic streams as a response to change in penguin populations
Autorzy:: Nedzarek, A.
Powiązania:: https://bibliotekanauki.pl/articles/11966.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Antarctic
stream
fresh water
nitrogen concentration
phosphorus concentration
concentration change
penguin
animal population
population change
Opis:: This study presents changes in the concentrations of nitrogen and phosphorus in two streams in Western Antarctica (Admiralty Bay, King George Island, South Shetlands) that differ in trophic status. The results suggest a decline in concentrations of the determined forms of N and P between 2001 and 2005. The decrease ranged from 9.3% for reactive phosphorus to 73.2% for ammonium-nitrogen. Such inferred declines in N and P concentrations are considered to reflect reduced deposition on land of organic matter brought in from the seas by the penguins nesting in the area. The ultimate cause of this is in turn the steady decline in abundance that is being noted for these penguins.
Źródło:: Papers on Global Change; 2010, 17
2300-8121
1730-802X
Pojawia się w:: Papers on Global Change
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Annual reproductive cycle in two free living populations of three-spined stickleback (Gasterosteus aculeatus L.): patterns of ovarian and testicular development
Autorzy:: Sokolowska, E.
Kulczykowska, E.
Powiązania:: https://bibliotekanauki.pl/articles/47889.pdf
Data publikacji:: 2006
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: free living population
stickleback
gonad
environment change
reproductive cycle
wild population
Oliva Stream
natural habitat
fresh water
breeding
Vistula River
Gasterosteus aculeatus
spermatogenesis
vitellogenesis
Opis:: The annual reproductive cycle in two wild populations of three-spined stickleback was studied. Sticklebacks from the Dead Vistula River (Martwa Wisła) (brackish water) and the Oliva Stream (Potok Oliwski) (freshwater) were exposed to annual environmental changes in their natural habitats. Ovaries and livers (females), and testes and kidneys (males) were collected during 1–2 years. The gonadosomatic IG, hepatosomatic IH, nephrosomatic IN indices, kidney epithelium height (KEH) and size of oocytes were calculated. The number of mature oocytes and percentage of ovulating females were determined during the spawning season. Histological changes in the ovaries and testes were described throughout a year. Annual reproductive cycles were similar in both populations of sticklebacks. This is the first histological and morphological study carried out throughout a year, simultaneously in two wild populations of three-spined sticklebacks inhabiting different environments. An improved scale of gonadal development in conjunction with the determined indices and fecundity give a comprehensive description of the reproductive cycle. These newobserv ations, in combination with previously reported features, provide a universal scale that can be successfully used to distinguish all phases of gametogenesis in sticklebacks in different habitats.
Źródło:: Oceanologia; 2006, 48, 1
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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