Inny tytuł:

Jorka river-lake system - synthesis of the studies

Współtwórca:

Polish Academy of Sciences. Institute of Ecology

Wydawca:

Polish Academy of Sciences. Institute of Ecology. Publishing Office

Miejsce wydania:

Dziekanów Leśny

Opis:

Strony 543-550 ; 27 cm ; Bibliografia na stronach 549-550

Typ obiektu:

Czasopismo/Artykuł

Abstrakt:

The basic results and conclusions of multi-year studies (described in detail in previous papers) on the river-lake system in the lakeland region of north-eastern Poland are shortly presented in relation to the selected general ecological problems. The study area was proved to be representative of the mosaic landscape structure and of the river-lake system as a trophic continuum with the spatial pattern of human impact established a century ago. Generally low export rates of nutrients and relatively low input to the lakes were found as typical of the region. However, year-to-year variation in nutrient export from the lake watersheds was high, mostly related to the discharge variation, and highest in the vernal period; the highest values were found for polluted fragments of the watershed. The long-term relative stability of in-lake trophic conditions was found and their basic relation to the lake position in the river system. The role of wetlands (isolated patches and the zones close to lakes) in diminishing the nutrient input was proved and their vegetation was described. Some consequences of the possible global warming and decrease in discharge and water table in the region were pointed out, such as the pulsing (concentrated in the freshet period) system of water and nutrient supplying, sink or source function of lakes in the river system (positive or negative nutrient retention in successive lakes), change in eutrophication rate, and its symptoms. The main implications for watershed management in the lakeland region are indicated.

Bibliografia:

Andrzejewski R. 2002 – Ważne kierunki badań ekologicznych w Polsce [The ecological research problems important in Poland] - Nauka 1 : 93-97. (in Polish)
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Haycock N. E., Burt T. P., Goulding K. V., Pinay G. 1997 - Buffer zones: their processes and potential in water protection. - Quest International, UK, 322 pp.
Hillbricht-Ilkowska A. 1999a - Shallow lakes in lowland river systems: role in transport and transformations of nutrients and biological diversity - Hydrobiologia, 408/409: 349-358.
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Czasopismo/Seria/cykl:

Polish Journal of Ecology

Tom:

50

Zeszyt:

4

Strona pocz.:

543

Strona końc.:

550

Szczegółowy typ zasobu:

Artykuł

Identyfikator zasobu:

oai:rcin.org.pl:121290 ; ISSN 1505-2249

Źródło:

MiIZ PAN, sygn. P.2840 ; kliknij tutaj, żeby przejść

Język:

eng

Język streszczenia:

Prawa:

Licencja Creative Commons Uznanie autorstwa 3.0 Polska

Zasady wykorzystania:

Zasób chroniony prawem autorskim. [CC BY 3.0 PL] Korzystanie dozwolone zgodnie z licencją Creative Commons Uznanie autorstwa 3.0 Polska, której pełne postanowienia dostępne są pod adresem: ; -

Digitalizacja:

Muzeum i Instytut Zoologii Polskiej Akademii Nauk

Lokalizacja oryginału:

Biblioteka Muzeum i Instytutu Zoologii PAN

Dofinansowane ze środków:

Program Operacyjny Polska Cyfrowa, lata 2014-2020, Działanie 2.3 : Cyfrowa dostępność i użyteczność sektora publicznego; środki z Europejskiego Funduszu Rozwoju Regionalnego oraz współfinansowania krajowego z budżetu państwa

Dostęp:

Otwarty