National Repository of Grey Literature 495 records found  beginprevious476 - 485next  jump to record: Search took 0.00 seconds. 
The genus .i.Chironomus./i. MEIGEN (Diptera, Chironomidae) in the Novohradské Mountains (South Bohemia)
Matěna, Josef ; Matěnová, V.
The occurrence of Chironomus species was investigated in Novohradské Mountains during 1999-2001. Fishponds, running waters and small standing waters of both permanent and astatic characters were included. Larvae were identified cytotaxonomically according to polytene chromosomes of salivary glands. Ch. annularius occurred more regularly in fishponds without fishery management, further species were found only in some of these habitats - Ch. balatonicus, bernensis, obtusidens, parathummi, plumosus, sp. - near muratensis and Ch. (C.) tentans. Organically polluted stretches of running waters were characterized by mass occurrence of Ch. riparius. Ch. luridus and Ch. melanotus were the dominant species of small permanent water bodies, further species found in these habitats were Ch. aberratus, commutatus, dorsalis, holomelas, piger and pseudothummi. Astatic habitats - rainpools were inhabited almost exclusively by Ch. dorsalis.
The impact of different management on mountains meadows
Květ, Jan ; Mašková, Z. ; Šimek, M. ; Voženílková, B. ; Kvítek, T. ; Pižl, V.
In 1997, a long-term field experiment was based in sub-alpine mesophilic mountainous meadows in foothills of the Bohemian Forest to estitude the impact of different management on the structure and functions of grassland vegetation in mountainous regions. Four -year results show an indispensible role of regular mowing of meadow restoration.
Třeboňsko 2000. Ecology and Economy of the Třeboň Region after 20 years
Pokorný, Jan ; Šulcová, J. ; Hátle, M. ; Hlásek, J.
The conference Třeboňsko 2000, with its sub-title The ecology and economy of the Třeboň Region is the third of such conferences - following two ones, held in 1978 and 1988, respectively. The present conference has continued in the fine tradition of good communication between all the subject areas thet are inevitably involved in, and/or influenced by, the conservation and development of the Třeboň Basin Protected Landscape Area and Biosphere Reserve

National Repository of Grey Literature : 495 records found   beginprevious476 - 485next  jump to record:
Interested in being notified about new results for this query?
Subscribe to the RSS feed.