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Título : Higher predation risk for insect prey at low latitudes and elevations
Autor : Roslin, Tomas
Hardwick, Bess
Donoso, David A.
et. al.
Palabras clave : HIGHER PREDATION RISK
INSECT PREY
LOW LATITUDES AND ELEVATIONS
Fecha de publicación : 19-may-2017
Citación : Roslin, T., B. Hardwick, D. A. Donoso y et. al., 2017. Higher predation risk for insect prey at low latitudes and elevations. Science 356: 742–744.
Citación : Science;356
Resumen : Biotic interactions underlie ecosystem structure and function, but predicting interaction outcomes is difficult.We tested the hypothesis that biotic interactionstrengthincreases toward the equator, using a global experiment with model caterpillars to measure predation risk. Across an 11,660-kilometer latitudinal gradient spanning six continents,we found increasing predation toward the equator, with a parallel pattern of increasing predation toward lower elevations. Patterns across both latitude and elevationwere driven by arthropod predators,with no systematic trend in attack rates by birds or mammals.These matching gradients at global and regional scales suggest consistent drivers of biotic interaction strength, a finding that needs to be integrated into general theories of herbivory, community organization, and life-history evolution.
URI : http://bibdigital.epn.edu.ec/handle/15000/19097
ISSN : 0036-8075
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