Scaling of 'landscapes' in landscape ecology, or, landscape ecology from a beetle's perspective
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作者:
Wiens, John A.
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机构:
Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA
Colorado State Univ, Nat Resource Ecol Lab, Ft Collins, CO 80523 USAColorado State Univ, Dept Biol, Ft Collins, CO 80523 USA
Wiens, John A.
[1
,2
]
Milne, Bruce T.
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机构:
Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USAColorado State Univ, Dept Biol, Ft Collins, CO 80523 USA
Milne, Bruce T.
[3
]
机构:
[1] Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA
[2] Colorado State Univ, Nat Resource Ecol Lab, Ft Collins, CO 80523 USA
[3] Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA
Research performed on microlandscapes embodies the essence of landscape ecology by focusing on the ecological consequences of the mosaic structure of different landscape elements. As an illustration, observations and simulations were used to test whether the fractal structure of grassland microlandscapes affected the movement patterns of tenebrionid beeetles in natural environments. The significant tendency of beetles to avoid 1 m 2 cells with fractal dimensions of 1.85 to 1.89 (indicating the area-filling tendency of bare ground) demonstrated the role of landscape structure as a modifier of beetle movements or diffusion in heterogeneous landscapes. Experiments in microlandscapes may accelerate the development of quantitative conceptual frameworks applicable to landscapes at all scales.