Ve\u0107ina stani\u0161ta bjelonog raka predstavljaju teku\u0107ice, ali javlja se i u staja\u0107icama. Zbog fragmentiranosti stani\u0161ta, ne uspijeva migrirati na znatnije udaljenosti. Stoga, ako na odre\u0111enom lokalitetu nestane, iz bilo kojeg razloga, naj\u010de\u0161\u0107e ne uspijeva ponovo naseliti taj lokalitet. Mo\u017ee se re\u0107i da prisutnost bjelonogog raka na nekom stani\u0161tu ovisi o kontinuirano dobroj kvaliteti toga stani\u0161ta u izrazito dugom vremenskom razdoblju (desetlje\u0107ima). Bjelonogi rak cijeli \u017eivotni ciklus pro\u017eivi na istom tipu stani\u0161ta.<\/p>\n
U NP \u201eKrka\u201c zadnji put je zabilje\u017een 2003. pa se smatralo da je u potpunosti nestao s ovog podru\u010dja. Ipak, 2023. ponovno je zabilje\u017eena jedna jedinka na podru\u010dju Ro\u0161kog slapa.<\/p>\n
Istra\u017eivanje bjelonog raka 2024. godine, provedeno u ljetnom razdoblju, obuhvatilo je ukupno 104 lokaliteta. Osim rijeke Krke, istra\u017eivanjem su obuhva\u0107eni i njeni pritoci. Ve\u0107ina (86) lokacija istra\u017eena je postavljanjem vr\u0161a, dok je manji broj (18) istra\u017een vizualnim opa\u017eanjem. Rezultati istra\u017eivanja pokazali su da je u slivu rijeke Krke bjelonogi rak zabilje\u017een na devet od ta 104 lokaliteta.<\/p>\n
Populacija pod slapom Kr\u010di\u0107 brojna je, ali izuzetno prostorno ograni\u010dena. Populacije na Ro\u0161kom slapu i Visova\u010dkom jezeru rijetke su. U pritocima rijeke Krke situacija je ne\u0161to bolja, u Bribi\u0161nici i Vrbi na\u0111ene su guste populacije du\u017e vodotoka.<\/p>\n
Unato\u010d ponovnim nalazima bjelonogog raka, njegove su populacije izolirane i izuzetno ranjive zbog prisutnosti razli\u010ditih stresora. Najve\u0107e su prijetnje njegovu opstanku one\u010di\u0161\u0107ena voda, bolest ra\u010dja kuga i invazivne vrste.<\/p>\n
Pra\u0107enje stanja bjelonog raka na podru\u010dju rijeke Krke nastavit \u0107e se, a razmatra se i mogu\u0107nost njegove reintrodukcije.<\/p>\n
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[en] Most of the habitats of the white-legged crayfish are in flowing water, but they also are present in stagnant water. Due to the fragmentation of their habitats, they are unable to migrate significant distances. Therefore, if they disappear from a particular location for any reason, they most often fail to repopulate that location. It can be said that the presence of the white-legged crayfish depends on a continual high quality of the habitat over an extremely long period of time (decades).<\/p>\n The white-legged crayfish spends its entire life cycle in the same type of habitat.<\/p>\n It was last recorded in the Park area in 2003, and was considered to have completely disappeared from this area. It was not until 2023 that 1 individual was recorded again in the Ro\u0161ki Slap area.<\/p>\n The white crab investigation was conducted in 2024, during the summer period, and encompassed a total of 104 localities.<\/p>\n Most locations (86) were investigated by setting up traps, while a smaller number of locations (18) were surveyed by visual observation. In addition to the Krka River, the investigation also included its tributaries.<\/p>\n The research results showed that in the Krka River basin, white-legged crayfish were recorded at 9 out of 104 investigated locations.<\/p>\n The population under the Kr\u010di\u0107 waterfall is numerous, but extremely limited spatially. The populations at Ro\u0161ki slap waterfall and Visovac Lake are rare. The situation in the tributaries of the Krka River is somewhat better, with dense populations found along the watercourses of the Bribi\u0161nica and Vrba.<\/p>\n Despite the resurgence of white-legged crayfish, the populations are isolated and extremely vulnerable due to the presence of various stress elements. The greatest threats to the survival of white-legged crayfish are polluted water, the crayfish plague, and various invasive species.<\/p>\n Monitoring the condition of the white-legged crayfish in the area of \u200b\u200bthe Krka River will continue, and the possibility of reintroduction is also being considered.<\/p>\n <\/p>\n Bjelonogi rak prirodno je rasprostranjen u svim rijekama jadranskog sliva i na podru\u010dju Like. Me\u0111utim, zbog niza pritisaka i prijetnji kojima su izlo\u017eena slatkovodna stani\u0161ta (pogor\u0161anja kvalitete vode, regulacije vodotoka, invazivnih vrsta), bjelonogi rak nestaje s brojnih lokaliteta na kojima je nekada bio prisutan.<\/p>\n","protected":false},"author":2,"featured_media":11142,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[],"class_list":["post-11141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-monitoring"],"_links":{"self":[{"href":"https:\/\/npkrka.hr\/hr\/wp-json\/wp\/v2\/posts\/11141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/npkrka.hr\/hr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/npkrka.hr\/hr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/npkrka.hr\/hr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/npkrka.hr\/hr\/wp-json\/wp\/v2\/comments?post=11141"}],"version-history":[{"count":4,"href":"https:\/\/npkrka.hr\/hr\/wp-json\/wp\/v2\/posts\/11141\/revisions"}],"predecessor-version":[{"id":14110,"href":"https:\/\/npkrka.hr\/hr\/wp-json\/wp\/v2\/posts\/11141\/revisions\/14110"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/npkrka.hr\/hr\/wp-json\/wp\/v2\/media\/11142"}],"wp:attachment":[{"href":"https:\/\/npkrka.hr\/hr\/wp-json\/wp\/v2\/media?parent=11141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/npkrka.hr\/hr\/wp-json\/wp\/v2\/categories?post=11141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/npkrka.hr\/hr\/wp-json\/wp\/v2\/tags?post=11141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nInvestigation and monitoring of the status of white-legged crayfish \u2013 Austropotamobius pallipes \u2013in the Krka NP area<\/strong>
\nThe white-legged crayfish has a natural distribution in all the rivers of the Adriatic basin and also in the Lika region. However, due to a series of pressures and threats to freshwater habitats (deterioration of water quality, the regulation of watercourses, invasive species), the white-legged crayfish has been disappearing from many locations where it was once present<\/strong><\/p>\n
\n[\/en]<\/p>\n","protected":false},"excerpt":{"rendered":"