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247 kết quả thoả mãn.
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1 
John S Rhodes, Taylor & Francis, 2006. application/octet-stream, 0 kB.

2 
Bùi Thị Mỹ Lan; Hồ Xuân Đậu (hướng dẫn), Trường ĐHSP Tp. HCM, 2013. application/octet-stream, 0 kB.

3 
L.H.V. van der Woude (edited), IOS Press, 2010. application/octet-stream, 0 kB.

4 
Brigitte Mars, Storey Books, 1990. application/octet-stream, 0 kB.

5 
Catherine M. McGowan, Lesley Goff, Narelle Stubbs, Blackwell Publishing, 2007. application/octet-stream, 0 kB.

6 
Wai-Yuan Tan, Leonid Hanin (eds.), World Scientific, 2008. application/octet-stream, 0 kB.

7 
Amaranth Illuminare, Deborah S. Romaine, Facts On File, 2007. application/octet-stream, 0 kB.

8 
Chandra Kumar, Mark Bellamy (eds), Informa Healthcare USA, 2007. application/octet-stream, 0 kB.

9 
Edward W. Odell, Churchill Livingstone, [2010]. application/octet-stream, 0 kB.

10 
Jonathan J. Dutton, Gregg S. Gayre, Alan D. Proia, Informa Healthcare USA, 2007. application/octet-stream, 0 kB.

11 
Ronda G. Hughes (editor), Agency for Healthcare Research and Quality, U.S. Dept. of Health and Human Services, [2008]. application/octet-stream, 0 kB.

12 
William W. Hay, Myron J. Levin, Judith M. Sondheimer, Robin R. Deterding (eds), McGraw-Hill, 2009. application/octet-stream, 0 kB.

13 
Erin P. Martin, ProQuest Information and Learning Company, 2006. application/octet-stream, 0 kB.
  We sought major gradients in epiphytic macrolichen community composition at a landscape scale in the western Oregon Cascades. These gradients form a context for understanding likely effects of forest management, air pollution, and climate change on an important part of the biota. We also compared lichen community composition in different forest age classes to describe lichen colonization, succession, and the association of species with stands of different ages. Variation in lichen community composition was well described by nonmetric multidimensional scaling (NMS) with 83.4% of the variation accounted for. The strongest gradient (rotated to axis 1; r2 = 0.46) was related to climate as expressed by elevation and annual temperature, and air quality. Axis 2 (r2 = 0.23) was related to north-south position and the richness of epiphytic macrolichens. Axis 3 (r2 = 0.15) was associated with air quality and also represented forest age, with old growth and young forest stands occupying opposite ends of the axis. Species richness did not differ significantly between age classes. However, the abundance of chlorolichens, cyanolichens, forage lichens, nitrophilous lichens, species in the Cladonia/Sphaerophorus group, Usnea spp., old-growth associated lichens, and listed (Survey-and-Manage species, and Oregon Natural Heritage Program's threatened species) lichen species all differed significantly among forest age classes. Indicator Species Analysis (ISA) found significant indicators for each forest age class.

14 
Nguyễn Thị Ái; ThS. Hồ Xuân Đậu (hướng dẫn), Trường ĐHSP Tp. HCM, 2013. application/octet-stream, 0 kB.

15 
Frederic S. Bongard, Darryl Y. Sue, Janine R.E. Vintch (eds), McGraw-Hill, 2008. application/octet-stream, 0 kB.

16 
C. Warlow, Blackwell, 2008. application/octet-stream, 0 kB.

17 
Sherry Torkos, John Wiley & Sons Canada, 2008. application/octet-stream, 0 kB.

18 
Congress of the United States, Office of Technology Assessment, Washington, D.C.: The Office: For sale by the Supt. of Docs., U.S. G.P.O., 1978. application/octet-stream, 0 kB.

19 
Võ Như Nguyện; ThS. Hồ Xuân Đậu (hướng dẫn), Trường ĐHSP Tp. HCM, 2013. application/octet-stream, 0 kB.

20 
Elsevier, 2006. application/octet-stream, 0 kB.