The explanations commonly offered for elevational
patterns in species richness can be grouped into four categories: climatic hypotheses based on current abiotic conditions, spatial hypotheses of area and spatial constraint, historical hypothesis invoking processes occurring across evolutionary timescales, and biotic hypotheses such as community overlap (juxtaposition), source-sink dynamics and habitat heterogeneity (Brown, 2001; Lomolino, 2001; Grytnes and McCain, 2007).
Migratory status: The Avifauna was dominated by residents, followed by elevational
migrants (Table 3).
This region is ideal for studying the plasticity of leaf structure and function because of its larger elevational
gradients (average height >4000 m) and environmental variations.
The impact of sterile populations on the perception of elevational
richness patterns in ferns.
upper limit (1860 m; Table 1) for L.
Temperature changes alone may alter elevation ranges of some bird species, as the boundaries of many bird ranges are correlated with climatic factors (Bohning-Gaese and Lemoine 2004), particularly at the upper latitudinal and elevational
boundaries where cold temperatures may impose physiological constraints (Root 1988; Root and Schneider 1993; Newton 2003).
For me, this elevational
treatment sums up what I've become used to from them regarding the visual relief of the town, a total blank.
Continuing the auction's artistic theme, other featured lots include Elevational
Weights (Vertical 2010), a paint stick by American minimalist sculptor Richard Serra, as well as original works by Cai Guo Qiang (Horse in Doha), Matthew Day Jackson (Cult of Death) and Yousaf Ahmad (Teach Your Son).
Modern interest has focused on distributions along latitudinal and elevational
gradients and the processes that control these patterns (Colwell et al.
et al (2010) Net primary productivity allocation and cycling of carbon along a tropical forest elevational
transect in the Peruvian Andes.
and latitudinal) on species assemblages remain a central theme of biogeography (Willig et al.
1987) provided evidence that predictions might be improved by relating equations across similar elevational
zones, while Cattet (1990) suggested that an increase in the number of variables representative of size and BM would better describe the relationship between morphological measurements and BM.