. "10"^^ . " ecology" . "2006-01-01+01:00"^^ . . . . "Ephemeroptera" . . " biogeography" . "http://www.isvav.cz/projectDetail.do?rowId=GA206/06/1133"^^ . . . "Representatives of aquatic insects (Ephemeroptera and Plecoptera) have been studied. Semiquantitative samples were taken at 155 localities (representing all aquatic habitats and altitudinal zones) already repeatedly studied in the past in spring, spring-"@en . . "GA206/06/1133" . "Ephemeroptera; Plecoptera; Czech Republic; distribution; chorology; biogeography; ecology; long-term and gl"@en . "Ephemeroptera a Plecoptera: modelov\u00E9 skupiny ke studiu dlouhodob\u00FDch environment\u00E1ln\u00EDch zm\u011Bn akvatick\u00FDch biotop\u016F" . "1"^^ . . . "1"^^ . "2009-10-22+02:00"^^ . . "Intenzivn\u011B byli studov\u00E1ni z\u00E1stupci vodn\u00EDho hmyzu (Ephemeroptera a Plecoptera). Semikvantitativn\u00ED vzorky byly odebr\u00E1ny na ji\u017E v minulosti opakovan\u011B sledovan\u00FDch 155 vybran\u00FDch lokalit\u00E1ch v\u0161ech typ\u016F biotop\u016F a v\u00FD\u0161kov\u00FDch p\u00E1sem v jarn\u00EDm, jaroletn\u00EDm a podzimn\u00EDm"@cs . "2008-12-31+01:00"^^ . "Na rozd\u00EDl od v\u011Bt\u0161iny zem\u00ED, \u0159\u00E1dy Ephemeroptera a Plecoptera \u010Cesk\u00E9 republiky byly na v\u00EDce ne\u017E 2000 lokalit\u00E1ch studov\u00E1ny b\u011Bhem posledn\u00EDch 50 let. D\u00EDky v\u00FDsledk\u016Fm z\u00EDskan\u00FDm v pades\u00E1t\u00FDch a \u0161edes\u00E1t\u00FDch letech minul\u00E9ho stolet\u00ED a v obdob\u00ED 1975-1985, 1990-1995, m\u016F\u017Eeme na z\u00E1klad\u011B roz\u0161\u00ED\u0159en\u00ED, v\u00FDskytu a dominance jednotliv\u00FDch druh\u016F charakterizovat jejich taxoceny v souvislosti s dlouhodob\u00FDmi zm\u011Bnami prost\u0159ed\u00ED. Krom\u011B zp\u0159esn\u011Bn\u00ED slo\u017Een\u00ED taxocen\u016F, ekologick\u00FDch charakteristik a n\u00E1vrh\u016F opat\u0159en\u00ED k\u00A0ochran\u011B jednotliv\u00FDch druh\u016F, je mo\u017Eno hlavn\u00ED c\u00EDle projektu definovat takto: (i) odb\u011Br vzork\u016F na lokalit\u00E1ch sledovan\u00FDch v\u00A0minulosti (zejm\u00E9na jde o 150 vybran\u00FDch profil\u016F sledovan\u00FDch ve v\u0161ech sez\u00F3nn\u00EDch aspektech a period\u00E1ch v\u00FDzkumu) spole\u010Dn\u011B se sledov\u00E1n\u00EDm hlavn\u00EDch abiotick\u00FDch faktor\u016F, (ii) sestaven\u00ED map roz\u0161\u00ED\u0159en\u00ED s\u00A0ohledem na historick\u00FD i sou\u010Dasn\u00FD v\u00FDskyt a dlouhodob\u00E9 zm\u011Bny a (iii) charakteristika trend\u016F dlouhodob\u00FDch zm\u011Bn z\u00A0lok\u00E1ln\u00EDho, region\u00E1ln\u00EDho i glob\u00E1ln\u00EDho hlediska. K\u00A0jejich verifikaci byly stanoveny 3 hypot\u00E9zy: (i)" . "Contrary to most countries, the Ephemeroptera and Plecoptera have been extensively studied for the past 50 years at more than 2,000 localities in the Czech Republic. Thanks to data obtained in the 1950's and 1960's, 1975-1985, and 1990-1995 we are able to evaluate, on the basis of changes in frequency and dominance of individual species, really long-term changes in their taxocenes in relation to principal environmental factors. Besides precision of the taxocene composition and \u00A0ecological characteristics and measurement suggested to protect species in question, the main objective of the present project are, as follows: (i) to sample the localities investigated in the past (especially 150 ones sampled in all seasons and periods) as well asprincipal abiotic data; (ii) to construct distributional maps showing both historical and present distribution of species and respective long-term changes and (iii) to discuss trends in long-term changes from the local, regional and global point of view."@en . . " Czech Republic" . "0"^^ . " Plecoptera" . . . " distribution" . . " chorology" . "Ephemeroptera and Plecoptera: model groups to determine environmental long-term changes of aquatic biotopes"@en . . . . . "2008-04-25+02:00"^^ . . "10"^^ .