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- W2215774583 abstract "Habitat loss and degradation are recognized as the major contributors to species decline and extinction, and therefore represent a key conservation challenge for biodiversity conservation. Key to the protection of biodiversity is acquisition of ecological knowledge about how anthropogenic forest disturbances affect species and how species respond to emergent landscape characteristics. Furthermore, it is also important to assess how different management approaches and land tenures influence retention of the biota of particular sites and of landscapes. However, this crucial ecological knowledge is yet to be obtained for the threatened lowland landscapes of Nepal. Protected areas cover only a small proportion of forests in lowland Nepal; the majority of forests outside the protected areas (off-reserve) have been managed by the state government. However, in recent years, community forestry programs have been increasingly popular as attempts to protect biodiversity while permitting consumptive forest use by people. It is therefore important to understand effectiveness of different forest management tenures for avifaunal conservation. I compared species richness, abundance, diversity and community composition of birds among sites in community forests, state forests and protected areas. Although sites in protected areas had the greatest richness of birds, community forests and state managed forests had complementary assemblages, supporting species not represented in protected areas. Vegetation characteristics such as large tree density, tree canopy cover and shrub density were also greater in community forests than in state-managed forests. The findings suggest that the community forestry approach appears to improve habitat quality compared to state-managed forests, and therefore can be an alternative tenure type for conservation of off-reserve forests and avifauna in the region. Subsistence forestry practices such as logging, lopping, and grazing are sources of forest disturbance in lowland Nepal. Such activities do not reduce forest area, but change habitat characteristics, potentially affecting biodiversity directly, and through interactions with landscape characteristics. I examined effects of forest use practices on species richness and abundance of forest birds, and whether landscape context such as the extent of forest cover moderates disturbance effects on birds. I found that extraction of forest products reduced forest structural complexity and altered the avifaunal community of a site. At the site level, large tree density, tree canopy cover and shrub density were important habitat characteristics, while the extent of forest cover in the landscape had the greatest influence on richness of birds. The effects of forest disturbance (livestock grazing and logging) intensity on birds depended on the extent of forest in the surrounding landscape, with strongest effects in sites with less surrounding forest. Thus, although site-level vegetation structure is important, maintenance of forest extent in the landscape is also key for avifaunal conservation in the region. Several recent studies have demonstrated that the extent of forest cover and other landscape characteristics significantly influence bird species richness. However, different foraging guilds are likely to respond to landscape characteristics in different ways. Therefore, I examined the strength and magnitude of the relationships between the extent of forest cover and estimated species richness for overall birds and for each foraging guild separately. I found that landscape-level species richness of birds positively related to the extent of forest cover in the landscape. However, the relationship varied among the foraging guilds, with strong effects for foliage-gleaning insectivores and, to a lesser extent, frugivores, but only weak effects for sallying insectivores. The relationship between estimated species richness and the extent of forest cover in the landscape was nonlinear, with species richness decreasing more steeply below about 20-30% forest cover in the landscape. Importantly, I found that the relationship between richness and forest extent varied among foraging guilds and with landscape characteristics. Therefore, generalizing relationships between species richness and the extent of forest across all species could potentially mask important relationships at the functional level. The findings of this thesis have important implications for the conservation of avifauna in multiple-use forest landscapes. Although both site-and landscape-scale forest characteristics have important influences on bird communities, the extent of forest in the landscape both directly and indirectly affects persistence of birds in these landscapes. The extent of forest in the landscape can moderate the effects of subsistence forest use practices on bird assemblages. Therefore, conservation benefits for avifauna can be maximized by maintaining both site-level habitat structures such as large trees, and the extent of forest cover at the landscape-level. This can be achieved with appropriate protection measures through reducing human pressure on forests, and restoration of degraded forest habitats, particularly those that are heavily exploited such the state-managed forests. Thus, management approaches such as community forestry for management of off-reserve forests can potentially complement protected areas and maximize conservation outcomes in the region. Such measures will improve habitat quality and increase the chance of maintaining viable populations of the full complement of avifaunal species in the lowland landscape of Nepal." @default.
- W2215774583 created "2016-06-24" @default.
- W2215774583 creator A5001170671 @default.
- W2215774583 date "2015-11-16" @default.
- W2215774583 modified "2023-09-24" @default.
- W2215774583 title "Effects of habitat extent and forest disturbance on bird communities in lowland nepal" @default.
- W2215774583 cites W101119911 @default.
- W2215774583 cites W113312865 @default.
- W2215774583 cites W12294379 @default.
- W2215774583 cites W1485230393 @default.
- W2215774583 cites W1501534531 @default.
- W2215774583 cites W1525188676 @default.
- W2215774583 cites W1548406450 @default.
- W2215774583 cites W1561307828 @default.
- W2215774583 cites W1564272830 @default.
- W2215774583 cites W1567128738 @default.
- W2215774583 cites W1580058330 @default.
- W2215774583 cites W1587094587 @default.
- W2215774583 cites W1596646469 @default.
- W2215774583 cites W1600305215 @default.
- W2215774583 cites W1650349952 @default.
- W2215774583 cites W1893187722 @default.
- W2215774583 cites W1905138818 @default.
- W2215774583 cites W1927604084 @default.
- W2215774583 cites W1931041325 @default.
- W2215774583 cites W1964434544 @default.
- W2215774583 cites W1968246498 @default.
- W2215774583 cites W1969663931 @default.
- W2215774583 cites W1970210694 @default.
- W2215774583 cites W1975258901 @default.
- W2215774583 cites W1975625529 @default.
- W2215774583 cites W1977549951 @default.
- W2215774583 cites W1977947265 @default.
- W2215774583 cites W1979500433 @default.
- W2215774583 cites W1979587950 @default.
- W2215774583 cites W198012656 @default.
- W2215774583 cites W1980790239 @default.
- W2215774583 cites W1980994416 @default.
- W2215774583 cites W1981457167 @default.
- W2215774583 cites W1981642250 @default.
- W2215774583 cites W1982225265 @default.
- W2215774583 cites W1982676035 @default.
- W2215774583 cites W1983240817 @default.
- W2215774583 cites W1985817723 @default.
- W2215774583 cites W1987311970 @default.
- W2215774583 cites W1994882709 @default.
- W2215774583 cites W1999681891 @default.
- W2215774583 cites W2000175154 @default.
- W2215774583 cites W2000779440 @default.
- W2215774583 cites W2000818946 @default.
- W2215774583 cites W2001546067 @default.
- W2215774583 cites W2001691516 @default.
- W2215774583 cites W2001793325 @default.
- W2215774583 cites W2003284518 @default.
- W2215774583 cites W2003888657 @default.
- W2215774583 cites W2006457769 @default.
- W2215774583 cites W2006475627 @default.
- W2215774583 cites W2006690660 @default.
- W2215774583 cites W2007218223 @default.
- W2215774583 cites W2009435671 @default.
- W2215774583 cites W2009652281 @default.
- W2215774583 cites W2014034900 @default.
- W2215774583 cites W2014444740 @default.
- W2215774583 cites W2014959355 @default.
- W2215774583 cites W2014990349 @default.
- W2215774583 cites W2016600285 @default.
- W2215774583 cites W2017977879 @default.
- W2215774583 cites W2019655958 @default.
- W2215774583 cites W2020878692 @default.
- W2215774583 cites W2023851381 @default.
- W2215774583 cites W2025603472 @default.
- W2215774583 cites W2027187979 @default.
- W2215774583 cites W2030631203 @default.
- W2215774583 cites W2032966797 @default.
- W2215774583 cites W2035880986 @default.
- W2215774583 cites W2037082473 @default.
- W2215774583 cites W2037814319 @default.
- W2215774583 cites W2041053120 @default.
- W2215774583 cites W2042077140 @default.
- W2215774583 cites W2043921133 @default.
- W2215774583 cites W2045184987 @default.
- W2215774583 cites W2045332448 @default.
- W2215774583 cites W2045490444 @default.
- W2215774583 cites W2046165485 @default.
- W2215774583 cites W2048712287 @default.
- W2215774583 cites W205259702 @default.
- W2215774583 cites W2052852288 @default.
- W2215774583 cites W2054686599 @default.
- W2215774583 cites W2055886529 @default.
- W2215774583 cites W2057703103 @default.
- W2215774583 cites W2058152768 @default.
- W2215774583 cites W2058941879 @default.
- W2215774583 cites W2060398898 @default.
- W2215774583 cites W2061252021 @default.
- W2215774583 cites W2062631198 @default.
- W2215774583 cites W2069004918 @default.
- W2215774583 cites W2069320035 @default.
- W2215774583 cites W2069564298 @default.
- W2215774583 cites W2074722004 @default.
- W2215774583 cites W2076470360 @default.