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Status and Distribution Pattern of Native and Endemic Species in Uttarakhand

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Status and Distribution Pattern of Native and Endemic Species in Uttarakhand International Journal of Scientific & Engineering Research, Volume 4, Issue 11, November-2013 500 ISSN 2229-5518 Status and Distribution Pattern of Native and Endemic Species in Uttarakhand Western Himalayan Region, India Author: Dr. Surbhi Pandey & Soni Pandey Keywords : Indian Western Region, Native, Endemic Abstract Indian western Himalayan Region (IHR) Inhabitants are largely dependent on the biodiversity, which is one of the major source of livelihood. The relationship of the people with their immediate environs and natural resources has evolved over a long period based on necessities and experiences. The present study recorded in 119 species (27 Trees; 34 shrubs; 58 Herbs) were native to the Himalayan region, 30 species (12 Trees; 10 Shrubs; 8 Herbs) were native to the Himalayan region and other biogeographic regions, together whereas 628 species were non- natives representing various biogeographic provinces of the world. Amongst economically important species, 51 species were near endemic. The notable near endemic were Ainsliaea aptera, Bupleurum thompsonii, Begonia picta, Bauhinia retusa, Chaerophyllum villosum, Dipsacus inermis, Euonymus pendulus, Impatiens amphorata, Lonicera quinquelocularis, Osbeckia stellata, Pinus roxburghii, Rhaphidophora glauca, Swertia angustifolia, Tetrastigma bracteolatum, Ulmus wallichiana, Zingiber chrysanthum, etc. and only 2 species i.e, Pimpinella acuminata, and Pittosporum eriocarpum were endemic to the Indian Himalayan Region. Occurrence of 69 % non-native species in the study area itself indicates that non- native species are dominant over the native and endemic species. This may lead the extinction of the native and endemic species from the area and proliferation of more hardy non- native species. Therefore, there is a need to assess the populations of the native and endemic species using standard ecological methods. 1.1. Introduction and management of a particular biogeographic region. High percentage of native and endemic The nativity denotes first record/origin of IJSERspecies indicates the high conservation value of that the species (Anonymous, 1883-1970; Samant et al., particular area. The increasing human population 1998a) and endemism denotes the restricted and decreasing natural resources have created an distribution of a species in a particular imbalance in the natural systems. The habitat biogeographic province or a single Island or degradation and over exploitation of economically mountain top or even in a single rock outcrop important native and endemic species has caused (Huston, 1994). rapid depletion of their population from the wild The naturalness (nativity) and uniqueness habitats and non-native species have been (endemism) of the plant diversity of any proliferating fast due to their hardy nature. This has biogeographic province denotes the high drastically changed the composition of an conservation value of the area. These two attributes ecosystem, habitat and community of a particular help in tracing the evolution. These two attributes biogeographic province. It has been seen that play an important role in assessing the conservation introduction of the non-native species has drastically value of any habitat, community and ecosystem for changed the ecosystem property due to direct making a strategy and action plan for conservation competition with the native and endemic plant IJSER © 2013 http://www.ijser.org International Journal of Scientific & Engineering Research, Volume 4, Issue 11, November-2013 501 ISSN 2229-5518 species or directly alternating the ecosystem 2000a&b, 2001c, 2002a, 2006; Samant & Dhar, 1997; properties (Vitousek, 1986). Further, severe exotic Dhar et al., 1998b, and Samant, 1999). The species disturbances dramatically affected succession and restricted to Indian Himalayan Region has been led to exotic annual communities with low native considered as endemic whereas those with extended species richness and species diversity of distribution to neighboring Countries/States communities (MacArthur 1955, Hurlbert 1971, Peet considered as near endemic (Table 3.1). 1974, Pielou 1975; Magurran 1988, 2004; Schiuter and 1.3. Results Ricklefs 1993, Colwell and Coddington 1994; Of the total 774 species, 119 species (27 Kerebs1999, Huston, 1994, Stylinski & Allen, 1999). Trees; 34 shrubs; 58 Herbs) were native to the In the Indian Himalayan Region, in general, a very Himalayan region, 30 species (12 Trees; 10 shrubs; 8 few studies regarding nativity and endemism of the Herbs) were native to the Himalayan region and species are available (Dhar & Samant, 1993; Dhar et other biogeographic regions, together whereas 628 al., 1996, 1998a&b; Samant et al., 1996a, 1998a&b, species were non- natives representing various 2000, 2001a,b,c, 2002a&b,2006 a&b; Samant & Dhar, biogeographic provinces of the world (Appendix & 1997; Samant, 1999; Joshi et al., 1999, 2001; Samant & Fig. 3.1). The altitudinal distribution of the native Palni, 2000; Joshi, 2002; Arya, 2002; Samant & Pant, species within different life forms has been 2003; Samant & Pal, 2003; Samant & Joshi, 2004; Joshi presented (Fig. 3.2 & 3.3). & Samant, 2004; Pant, 2005; Samant & Pant; 2006; etc.), However, in particular, such studies at watershed and catchment levels are not available. Therefore, in thisIJSER chapter, attempt has been made to study the diversity and distribution pattern of the native and endemic species of the Uttarakhand Western Himalayan Region. Fig. 3.1. Distribution pattern of the native and 1.2. Materials and methods non-native species. The nativity of the species has been 200-1800 1801-2610 identified following Anonymous (1883-1970; Samant T & Dhar, 1997; Samant et al., 1998a&b, Samant, 1999; S and Samant et al., 2000a, 2002a). The species H indicating its origin from the Himalayan Region TotalLife forms were considered as natives. 0 50 100 150 200 250 The endemism of the species has been No. of species identified based on the distribution of the species Fig. 3.2. Altitudinal distribution of the Himalayan (Dhar & Samant, 1993; Samant et al., 1996a, 1998a&b, native species. IJSER © 2013 http://www.ijser.org International Journal of Scientific & Engineering Research, Volume 4, Issue 11, November-2013 502 ISSN 2229-5518 200-1800 T S H TotalLife forms 0 20 40 60 Fig.3.5. Utilization pattern of the endemic and near No. of Species endemic Plants along an altitudinal gradient. Fig.3.3. Altitudinal distribution of the Himalayan 1.4. Discussion native species together with other biogeographic The decreasing population of the native and regions. endemic species due to invasion of non-natives in Amongst the total economically important species, the tropical, sub-tropical and temperate zones of the 51 species were near endemic. The notable near globe is a great concern which is causing the endemic were Ainsliaea aptera, Bupleurum thompsonii, negative impacts on the entire ecosystems. The past Begonia picta, Bauhinia retusa, Chaerophyllum villosum, studies have proved that non-natives affect the Dipsacus inermis, Euonymus pendulus, Impatiens hydrology and nutrient cycles of entire ecosystems amphorata, Lonicera quinquelocularis, Osbeckia stellata, (Vistousek, 1986). Such impact may lead the Pinus roxburghii, Rhaphidophora glauca, Swertia extinctions of the native and endemic species from angustifolia, Tetrastigma bracteolatum, Ulmus the ecosystem. In general, invasions potentially lead wallichiana, Zingiber chrysanthum, etc. and only 2 to an increase in species richness, as the invading species i.e, Pimpinella acuminata, and Pittosporum IJSERspecies are added to the existing species pool. eriocarpum were endemic to the Indian Himalayan However, they have negative effects on the native Region. The altitudinal distribution and utilization species leading even to the extinctions therefore, pattern of the endemic and near endemic species decreasing net diversity of the area (Huston, 1994). have been presented (Fig.3.4 & 3.5). Presence of non-natives in India and the Himalaya is 200-1800 known (Maheshwari, 1962), which is largely 60 50 attributed to migration over geological time periods 40 30 (Saxena, 1991). 20 10 Although, the non-natives are relatively 0No. of Species hardy species compared to natives and capable of Total Herbs Shrubs Trees Life Form spreading far beyond their native places yet, there Fig. 3.4. Altitudinal distribution of the Endemic are some limitations, which restrict the invasion of and Near Endemic Plants. non-natives particularly in the mountainous regions and Islands. Topography and climate are the major barriers to restrict the gene flow and thus, allow IJSER © 2013 http://www.ijser.org International Journal of Scientific & Engineering Research, Volume 4, Issue 11, November-2013 503 ISSN 2229-5518 speciation to occur (Samant et al., 2002, Joshi, 2002). The altitude, longitude and latitude play an important role in the speciation of the species Table 3.1. Distribution pattern of the native and (Khoshoo, 1992). In the Uttarakhand Western endemic species in the Uttarakhand Western Himalayan Region, the human habitations are Himalayan Region located mostly in the sub-tropical and temperate Family/Taxa Local Altitu LF Nativity Ende Name dinal mism zones. The forests of these regions are facing high range pressures due to heavy lopping, felling, causing (m) habitat degradation and over exploitation of the Apiaceae species, and the native species are decreasing at an Buplerum Jangali- 1500- H Reg NE accelerating rate due the invasion of non-native thompsonii Cl. Jeera 2500
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