阿塔卡马沙漠爬行动物和哺乳动物的分布、密度和同位素生态位;爬行动物中蜥脚类动物的记录

IF 0.2 4区生物学 Q4 ZOOLOGY

GAYANA Pub Date : 2020-12-31 DOI:10.4067/S0717-65382020000200118

G. Lobos, Gianina Tapia, Alejandra Alzamora, O. Rojas

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引用次数: 1

摘要

极度干旱的阿塔卡马沙漠没有植被，在智利从北向南延伸740公里。在这种环境中，低流动性脊椎动物的存在表明了特殊适应能力的发展和很少被探索的生态系统相互关系的存在。研究了两种海拔梯度分别为76 km的爬行动物和哺乳动物的分布和密度。另一方面，我们使用稳定同位素分析来表征爬行动物的营养生态位。我们发现爬行动物和哺乳动物很少，密度也很低。Zygentoma目的银鱼是这个群落的主要猎物。爬行动物在营养来源的消耗上是重叠的，但在营养网中的位置不同。这些信息还补充了在这个极端生态系统中爬行动物捕食的信息。

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Distribución, densidad y nicho isotópico en reptiles y mamíferos del desierto absoluto de Atacama; con registro de saurofagia entre reptiles

The hyperarid Atacama Desert, without vegetation, extends for 740 km N to S in Chile. The presence of vertebrates with low mobility in this environment indicates the development of special adaptive capacities and the presence of little-explored ecosystem interrelations. We studied the distribution and density of reptiles and mammals in two altitude gradients of 76 km each. On the other hand, we use a stable isotopes analysis for characterization of the trophic niche in reptiles. We found that the reptiles and mammals are infrequent and have low densities. The silverfish of the Zygentoma order are key prey in this community. Reptiles overlap in the consumption of trophic sources, but differ in their positions in the trophic web. The information is complemented with information about predation among reptiles in this extreme ecosystem.

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来源期刊

GAYANA Agricultural and Biological Sciences-Aquatic Science

CiteScore

0.60

自引率

0.00%

发文量

期刊介绍： GAYANA is a scientific journal published by Universidad de Concepción, Chile. It is the modern version of Gayana Oceanología and Gayana Zoología. Therefore its numeration starts at volume 63(1). GAYANA covers all aspects of zoology and oceanographic research. It is structured in five sections, defined by subject or discipline: Ecology, Biodiversity and Taxonomy, Earth Sciences, Evolutionary, and Applied Biology and Environmental Biology. Each section is in charge of an editor who receives and manages the manuscripts sent for evaluation in close collaboration with the editorial board.