<P> Introduction of new species into a habitat has caused serious consequences to the existing species of flora and fauna . A typical example is the introduction of the African catfish (Clarias gariepinus) in the lakes and rivers of Karnataka . This is a carnivorous fish and has caused serious damage to the indigenous fauna living in those lakes and rivers . Weeds like Eupatorium, Lantana and Parthenium have invaded large tracts of land causing destruction . An increase in Eupatorium is attributed as one of the causes for the spread of the deadly Kyasanur forest disease (which has a morbidity rate of 10%) among humans since it harbors tick populations that are vectors for this disease . Eucalyptus plantations in the Ranibennur blackbuck sanctuary has seriously harmed the extremely rare great Indian bustard . </P> <P> Various conservation activities are in progress to protect the biodiversity present in Karnataka . These activities are mostly done by the Forest Department of the State of Karnataka and other voluntary organisations . </P> <P> The presence of human habitation within the core area of reserved forests poses many problems like human--wildlife conflict and destruction of habitat due to agriculture and cattle grazing . Systematic efforts have been made to relocate some of this population into proper zones outside the protected area . An example is the relocation of some villagers from Bhagawathi and Nassehalla habitations within the Kudremukh National Park to safer regions outside it . </P> <P> New scientific methods are being used to protect the flora and fauna . Some of these are: </P>

List out the national reserve forests wildlife sanctuaries and bird sanctuaries in karnataka