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Conditions of Fish Farming In Natura 2000 Areas, Based on the Example of the Catchment of Barycz

Tokarczyk-Dorociak K., Drabiński A., Szewrański S., Mazurek S., Kraśniewska W.

Journal of Ecological Engineering

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2016

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Vol. 17, nr 3

185--192

EN

One of the factors that contributed to the construction of approx.77 km2 offish ponds in the catchment of Barycz starting from the 13th century, which in turn transformed the woods into a mosaic of waters, forests and arable land, were the advantageous physiographic conditions. Fish farming operations conducted in this area led to the creation of a cultural landscape characterised by unique natural values, similar to the natural landscape. Approx. 240 species of birds are observed here, of which 170 are nesting species. Due to its natural values, this area has been subject to natural reserve protection as part of the Landscape Park “Dolina Baryczy” (the Barycz Valley). It was entered in the “Living Lakes” list and it is protected under the Ramsar Convention as well as under the European nature protection network Natura 2000. The established forms of nature protection mean the introduction of a certain binding regime, pursuant to which the economic activity conducted in protected areas must take into account the prohibitions and orders introduced by documents that establish the said forms of protection. Additionally, there is a legal requirement to create a protection plan or conservation plan that constitutes a basis for the realisation of conservation-related objectives. A commercial company Stawy Milickie S.A. (public limited company) operates in the area of this largest fish pond complex in Poland. The scope of its operations includes more than just the breeding and sale of freshwater fish (6500 ha of ponds) but also environmental protection, environmental education and the development of tourism as well as stimulating the development and professional activation of local communities basing on the natural resources that exist in the catchment of Barycz.This study presents the conditions related to fish farming operations conducted in this area. Conducting an extensive management (i.e. often uneconomical from the economic point of view) is a prerequisite for maintaining the biodiversity of this naturally valuable area. The conservation plan of the nature reserve “Stawy Milickie” (Milicz Ponds) contains a series of obligations and limitations with respect to fish farming. The development strategy of the Stawy Milickie SA Company takes into account all these conditions.

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The application of ceramic membranes for treating effluent water from closed-circuit fish farming

Bonisławska M., Nędzarek A., Drost A., Rybczyk A., Tórz A.

Archives of Environmental Protection

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2016

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Vol. 42, no. 2

59--66

EN

The aim of the study was to analyze and assess the possibility of using a two-stage filtration system with ceramic membranes: a 3-tube module with 1.0 kDa cut-off (1st stage) and a one-tube module with 0.45 kDa cut-off (2nd stage) for treating effluent water from a juvenile African catfish aquaculture. The study revealed that during the 1st filtration stage of the effluent water, the highest degrees of retention were obtained with respect to: suspended solids SS (rejection coefficient RI=100%), turbidity (RI=99.40%), total iron (RI=89.20%), BOD5 (RI=76.0%), nitrite nitrogen (RI=62.30%), and CODCr (RI=41.74%). The 2nd filtration stage resulted in a lower reduction degree of the tested indicators in comparison to the 1st filtration stage. At the 2nd stage, the highest values of the rejection coefficient were noted in for the total iron content (RIV=100%), CODCr (RIV=59.52%; RV=64.28%, RVI=63.49%) and turbidity (RIV and RV = 45.0%, RVI=50.0%). The obtained results indicate that ceramic membranes (with 1.0 and 0.45 kDa cut-offs) may be used in recirculation aquaculture systems as one of the stages of effluent water treatment.

PL

Celem pracy była analiza i ocena możliwości wykorzystania dwustopniowego systemu filtrowania z zastosowaniem membran ceramicznych w postaci modułu 3 rurowego o granicznej rozdzielczości membrany (z ang. cut-off) wynoszącej 1.0 kDa (I stopień) i modułu jednorurowego o granicznej rozdzielczości membrany wynoszącej 0.45 kDa (II stopień), do procesu oczyszczania wód poprodukcyjnych pochodzących z hodowli narybku suma afrykańskiego. Podczas I stopnia procesu filtracji wody poprodukcyjnej badania wykazały, że w najwyższym stopniu zatrzymywane były: zawiesina ogólna SS – RI= 100,0%, mętność RI=99.40%, zawartość żelaza ogólnego RI=89.20%, BZT5 RI=76.0%, oraz azot azotynowy RI=62.30% i ChZTCr RI=41.74%. II stopień procesu filtracji powodował mniejszy stopień redukcji wartości badanych wskaźników niż I stopień procesu filtracji. Wówczas najwyższy współczynnik retencji odnotowano w przypadku zawartości żelaza ogólnego RIV=100%, CODCr RIV=59.52%; RV=64.28%, RVI=63.49% i mętności RIV i RV= 45.0%, RVI=50.0%. Uzyskane wyniki wskazują na możliwość wykorzystania membran ceramicznych (o cut-off 1.0 i 0.45 kDa) w recyrkulacyjnych systemach akwakultury, jako jeden z etapów oczyszczania wód poprodukcyjnych.

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Staw, jaki jest, każdy widzi. Czy aby na pewno?

Rejman W.

Gospodarka Wodna

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2013

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Nr 9

341--344

PL

Przedstawiono problemy wynikające z orzecznictwa w zakresie stawów w związku z niejednorodnością i niespójnością przepisów prawnych na przykładzie praktyki RZGW we Wrocławiu. Zaproponowano kierunki zmian w celu doprecyzowania obowiązujących przepisów.

EN

The article, using the ample of the Regional Board of Water Management in Wrocław, presents problems resulting from jurisprudence referring to ponds, the reason for which is lack of uniformity and cohesion of legal provisions. The author proposes directions for changes in order to make the binding law more precise.

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Rada Naukowa ds. Gospodarki Rybackiej przy dyrektorze Regionalnego Zarządu Gospodarki Wodnej w Krakowie czyli nowe oblicze hydrotechniki

Jelonek M.

Gospodarka Wodna

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2004

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Nr 2

53-60

EN

The paper presents the standpoint of the Scientific Council for Fish Farming under the Director of the RZGW to the following questions: the active protection of fish and particularly the restoration and protection of migratory species and species being in danger of extinction, the rational utilization of water resources taking into particular consideration the conditions of localization of hydro-electric stations, hydrotechnical building of rivers and streams and the taken in a broad sense renaturalization of flowing waters based a.o. on restoration of permeability of rivers and streams.

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Korzystanie z carskich serwitutów brzegowych w XXI wieku

Szkiruć Z., Ambrosiewicz M.

Gospodarka Wodna

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2004

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Nr 3

99-102

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Rozwój techniki a problemy żywnościowe świata

Bobrowski W.

Wiadomości Elektrotechniczne

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2003

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R.LXXI, nr 3

81-85

PL

Omówiono wpływ rozwoju techniki na rozwiązywanie problemów żywnościowych, szczególnie w zakresie produkcji zbóż, gospodarki rybnej, hodowli zwierząt oraz przemysłu winiarskiego.

EN

Influence of technology development upon solving nutritional problems, especially regarding the production of corn, fish farming, animal farming and wine-making industry.