Hrvatske vode
 
Utjecaj ekoloških čimbenika na raznolikost i brojnost životnih zajednica potoka Jankovac (Park prirode Papuk)
Impact of environmental factors on the diversity and number of living communities in the Jankovac stream (Nature Park Papuk)

Ana Ostojić1*, Maria Špoljar1, Tvrtko Dražina1

Sažetak/Abstract: 

Istraživanje zoosestona provedeno je u lotičkim i lentičkim staništima longitudinalnog profila potoka Jankovac (Park prirode Papuk) u razdoblju od svibnja do listopada 2008. godine. Cilj ovog istraživanja bio je prikazati osnovna hidrološka obilježja te utvrditi utjecaj prekrivenosti dna vodenim makrofitima na razvoj, produkciju i bioraznolikost planktonske zajednice u protočnom hidrosustavu.

Rezultati istraživanja ukazuju da su promjene fizikalno-kemijskih pokazatelja bile statistički značajne između istraživanih postaja longitudinalnog profila potoka Jankovac (p<0,05). Ukupno je determinirano 86 svojti od čega najviše kolnjaka (Rotifera, 57 svojti), rašljoticalaca (Cladocera, 15 svojti) i veslonožaca

(Copepoda, 8 svojti). Kolnjaci su dominirali raznolikošću i brojnošću zoosestona, dok su najveći udio u biomasi imale skupine Cladocera i Copepoda. U protočnom sustavu potoka Jankovac lentička staništa zbog retencije vode omogućuju razvoj planktonske zajednice. U njima zone sa submerznim makrofitima

predstavljaju vrlo produktivna staništa s velikom brojnošću jedinki i raznolikošću svojti. To su glavna područja velike produkcije koja omogućavaju stvaranje dovoljne količine hrane bentoskim organizmima nizvodno u protočnom sustavu.

 

The investigation of zooseston was conducted in the lotic and lentic habitats of the Jankovac stream's

longitudinal profile (Nature park Papuk) in the period from May to October 2008. The investigation's objective was to present the main hydrological characteristics and determine the impact of aquatic macrophyte-covered bottom on the development, production and biodiversity of the plankton community in the stream's hydrological system.

The investigation results indicate that statistically significant changes of physico-chemical indicators occurred between the investigated stations on the Jankovac stream's longitudinal profile (p<0.05). In total, 86 taxa were determined, of which the majority were rotifers (Rotifera, 57 taxa), cladocerans (Cladocera, 15 taxa) and copepods (Copepoda, 8 taxa). Rotifers dominated with regard to diversity and number of zooseston, whereas Cladocera and Copepoda taxa represented the majority of biomass. In the Jankovac stream system, lentic habitats facilitate, due to water retention, the development of the plankton community. Zones with submersed macrophytes are very productive habitats with a large number and great diversity of organisms, and are the main, most productive areas, which produce sufficient quantities of nutrition for downstream benthic organisms in the stream system.

Kategorija: 
Izvorni (originalni) znanstveni članak / Original Scientific Paper
Ključne riječi/Key words: 

potok Jankovac, NP Papuk, lotik, lentik, zooseston, makrofiti

Jankovac stream, NP Papuk, lotic, lentic, zooseston, macrophytes

Podaci o autorima/Authors affiliations: 

1Prirodoslovno-matematički fakultet Sveučilišta u Zagrebu, Biološki odsjek, Rooseveltov trg 6, 10000 Zagreb, aostojic@zg.biol.pmf.hr *

Literatura/References: 

APHA (1985.): Standard methods for the examination of water and wastewater 16th edn. American Public

Health Association, Washington, DC.

 

Breitig, G., Tümplig, W. (1982.): Ausgewahlte Methoden der Wasseruntersuchung. Band II: Biologische, mikrobiologische und toxikologische Methoden. VEB Gustav Fischer Ferlag. Jena. Deutschland.

 

DEV (1971.): Deutsche Einheitsverfahren zur Wasser-, Abwasser- und Schlamm-Untersuchung. Physikalische, chemische, biologische und bakteriologische Verfahren. 3. Auflage, 6. Lieferung. Chemie GmbH, Weinheim/ Bergstr., Deutschland.

 

Haberman, J. (1995.): Dominant rotifer of Vortsjav (Estonia). Hydrobiologia, 313/314, 313- 317.

 

Kalff, J. (2002.) Limnology: inland water ecosystems. Prentice Hall, Upper Saddle River, New York.

 

Maciolek, J. A. (1966.): Abundance and character of microseston in a California mountain stream. Verhandlungen des Internationalen Verein Limnologie, 16, 639-645.

 

Malard, F., Turquin M. J., Magniez, G. (1997.): Filter effect of karstic spring ecotones on the population structure of the hypogean amphipod Niphargus virei. U: Groundwater/Surface Water Ecotones: Biological and

Hydrological Interactions and Management Options (urednici J. Gilbert, J. Mathieu i F. Fournier), 40–50,

Cambridge University Press, Cambridge.

 

Nusch, E.A. (1980.): Comparison of different methods for clorophyll and phaeopigment determination. Archiv für Hydrobiologie –Beiheft Ergebnisse der Limnologie, 14, 14-36.

 

Palacios-Caceres, M., Zoppi de Roa, E. (1998.): Variations in zooplankton richness in a flooding savanna of Venezuela, Verhandlungen des Internationalen Verein Limnologie, 26, 1989 -1993.

 

Sandlund, O. T. (1982.): The drift of zooplankton and microzoobenthos in the river Strandaelva, western

Norway. Hydrobiologia, 94, 33-48.

 

Shannon, C. E. (1948.): A mathematical theory of communication. Bell System Technical Journal, 27, 379-

423 i 623-656.

 

Srdoč, D., Horvatinčić N., Obelić N., Krajcar-Bronić I., Sliepčević A. (1985.): Procesi taloženja kalcita u krškim vodama s posebnim osvrtom na Plitvička jezera. Krš Jugoslavije, 11, 101-204.

 

Steinman, P. (1915.): Praktikum der Süßwasserbiologie. Tail 1: Die Organismen des fließenden Wassers. 1-184, Borntraeger, Berlin.

 

Špoljar, M., Habdija, I., Primc-Habdija, B. (2007.a.): The Influence of the lotic and lentic stretches on the zooseston flux through the Plitvice Lakes (Croatia). Annales de Limnologie–International Journal of Limnology, 43, 29–40.

 

Špoljar, M., Primc-Habdija, B., Habdija, I., (2007.b.): Transport of seston in the karstic hydrosystem of the Plitvice Lakes (Croatia). Hydrobiologia, 579(1), 199-209.

 

Špoljar, M., Dražina, T., Habdija, I., Meseljević, M., Grčić, Z. (2011.): Contrasting Zooplankton Assemblages in Two Oxbow Lakes with Low Transparencies and Narrow Emergent Macrophyte Belts (Krapina River, Croatia). International review of Hydrobiology, 96(2), 175-190.

 

Vannote, R. L., Minshall, G. W., Cummins, K. W., Sedell, J. R., Cushing, C. E. (1980.): The river continuum concept. Canadian Journal of Fisheries and Aquatic Sciences, 37, 130-137.

 

Walz, N. (1995.) Rotifer populations in plankton communities: Energetics and life history strategies. Experientia, 51, 437- 453.

 

Węglenska, T., Ejsmont-Karabin, J. (1994.): The short and long term variability of the zooplankton structure in the Zagrzyński reservoir. Archiv für Hydrobiologie – Beiheft Ergebnisse der Limnologie, 40, 117-126.

 

Zimmermann-Timm, H., Holst, H., Kausch, H., (2007.): Spatial dynamics of rotifers in a large lowland river, the Elbe, Germany: How important are retentive shoreline habitats for the plankton community? Hydrobiologia, 593, 49–58.

 

www.pp-papuk.hr.