Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Oceanological and Hydrobiological Studies

2 Komulaynen S.

Powiadomienia systemowe

Sesja wygasła!

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Algae protection, conservation areas and the red data book of the Republic of Karelia

Komulaynen S.

Oceanological and Hydrobiological Studies

2010

Vol. 39, No.2

147-152

The conservation of algal species diversity as a component of natural ecosystems is recognized. The problem can be solved by: 1) making up a list of endangered species and including the algae in Red Data Books and Red Lists of Protected Species; 2) selecting water bodies to be protected and restored or including them in already protected areas, since the protection of an individual alga species is fairly problematic. In this article the principles and methods of freshwater algae conservation in Karelia Republic (Northwestern Russia), as well as problems related thereto, are analyzed.

Experience of using phytoperiphyton monitoring in urban watercourses

Komulaynen S.

Oceanological and Hydrobiological Studies

2004

Vol. 33, No. 1

65--75

The purpose of this paper is to assess how informative phytoperiphyton structural parameters are, and to assess the feasibility of using them for biological monitoring of river quality. The spatial distribution of the attached algae community was studied in some of rivers in Republic of Karelia (NW Russia). The influence of anthropogenic impacts on periphyton communities was analysed in terms of species richness, species diversity, species ecology values, biomass and chlorophyll concentration. All rivers are subjected to different kind of anthropogenic impacts in addition to natural disturbance. With regards to the species composition the differences between the urban and natural stretches of rivers are obvious. The data obtained demonstrate that the phytoperiphyton communities in urban streams are dominated by broadvalent, pollution-tolerant and even saprophilic taxa. Substantial changes in periphyton structure were often caused by an enhanced mechanical impact by storm run-off, which retarded colonisation, rather than any chemical influence. The burial of algae by sand and silt resulted in the loss of species or entire algal assemblages were observed. As result the communities are dominated by a few species with high recolonization potential.