Land Use Change and Mountain Biodiversity - Chapter 19 pptx

... (Cabrera and Willink, 198 0) and is character- ized by a mosaic of forests, grasslands, and shrublands (Moyano and Movia, 198 9; Arturi et al., 199 8). These forests are representative of floristic and ... northwestern Argentina is characterized by grasslands, shru- blands, mature forests, and successional forests that became established on grasslands and shrublands in which...

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... Latin-America 1500 High-Andean-Lower-paramo 1703.97 mm a -1 Bimodal-four seasons Upper-paramo 1229.33 mm a -1 Bimodal-four seasons Lower-paramo 1716.07 mm a -1 Unimodal-two seasons Middle-paramo 1644.33 ... as Chingaza and Chisaca, than in the arid pára- mos and low mountains, such as Berlín and El Hato (Cleef, 198 1; Sánchez-M and Ran- gel-Ch., 199 0; Rangel-Ch., 200...

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... economically privi- leged parts, population growth and land use pres- sure have often caused an expansion of agricul- tural land use into less suitable regions and abandonment of traditional land use practices. Both ... litter, and substrate. There is a rich literature describ- ing the floristics and biology of such high-ele- vation tropical tussock grasslands and heath-...

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... 196 8 198 0 Koromi (P) 3850 1051 198 5 199 1 Mena (s) 1250 387 198 3 198 8 Rira (s) 3000 848 198 7 199 0 Tulu Konteh (P) 4050 852 198 5 199 1 Source: From Hilman (198 6); Miehe and Miehe (199 4) . 3523_book.fm ... LLC 30 Land Use Change and Mountain Biodiversity TABLE 2.3 The distribution of the diversity (H), evenness of the 13 community types, and a vera...

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... remnants and heath- land at 3100 m, and heathland vegetation at 3300 m. The sites at 3100 m, therefore, enable a direct comparison of geometrid moth communities in heathland and forest fragments, ... event (199 6 to 199 7), when large areas of the 3523_C005.fm Page 69 Wednesday, November 23, 2005 7:50 AM Copyright © 2006 Taylor & Francis Group, LLC 72 Land Use Change...

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... al. 199 1). Livestock raising is one of the most impor- tant land uses in many montane grasslands (Eckholm 197 5). Particularly in Andean grass- lands, extensive cattle grazing is often com- bined ... distur- bances in many grassland ecosystems around the world (McNaughton et al. 199 3; Vogl 197 4 in Oesterheld et al. 199 9, De Baro et al. 199 8), and they both affect biodiversity...

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... al. 198 8; Huntly 199 1; Pac- ala and Crawley 199 2; Gough and Grace 199 8). Herbivory also affects the rates of suc- cession and can produce divergence in succes- sional pathways (Davidson 199 3; ... & Francis Group, LLC 120 Land Use Change and Mountain Biodiversity system generates a landscape mosaic of areas under cultivation, under natural vegetation and a...

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... grassland species palatability for alpacas and sheep in the Andean region (Contreras, 196 7; Antezana, 197 2; Peña, 197 0; Montufar, 198 3; La Torre, 196 3; Sanches, 196 6; Farfan, 198 1; Reiner and ... 154 Land Use Change and Mountain Biodiversity performance by altering microclimate, soil properties, and plant competitive interactions (Woodmansee and Adamsen,...

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... LLC 184 Land Use Change and Mountain Biodiversity Behnke, R.H. and Scoones, I. (199 3). Rethinking range ecology: implications for rangeland management in Africa. In Behnke, R.H., Scoones, I., and ... practices and the evalu- ation of their sustainability (Westoby et al., 198 9; Laycock, 199 1; Ellis and Swift, 198 8; Ellis, 196 0; Dodd, 199 4; Behnke and Scoones,...

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... 3523_book.fm Page 192 Tuesday, November 22, 2005 11:23 AM Copyright © 2006 Taylor & Francis Group, LLC 196 Land Use Change and Mountain Biodiversity De Robert, P. and Monasterio, M. (199 3). Practicas agrícolas ... rates and slow litter decom- position. Life-forms dominant in Andean wet- lands show morphological and ecophysiological adaptations to low tempera- tur...

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