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首页> 外文期刊>Amphibia-reptilia: Publication of the Societas Europaea Herpetologica >Niche segregation of sand lizard (Lacerta agilis) and green lizard (Lacerta viridis) in an urban semi-natural habitat
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Niche segregation of sand lizard (Lacerta agilis) and green lizard (Lacerta viridis) in an urban semi-natural habitat

机译：城市半自然栖息地中的蜥蜴（Lacerta agilis）和绿蜥蜴（Lacerta viridis）的生态位隔离

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Different types of semi natural habitats has important role in long-term survival and maintenance of reptile species in urban environments. Heterogeneous urban green islands can provide conditions that enable competing species to live together in relatively small areas. However, the key mechanism of coexistence could vary from types of habitats and taxa. We investigated the population structure, the fine scale habitat segregation and diel activity pattern of two lizard species (Lacerta viridis and L. agilis) coexisting populations in a town cemetery. We hypothesized, that fine scale habitat segregation is a more important factor in coexistence than differences in diel activity pattern, because of the environmental dependent thermoregulation constrain. During the study, 178 L. agilis and 79 L. viridis occurrences were recorded. The daily activity patterns of both species were very similar, with peaks found in the forenoon and afternoon. Lizards were found to be the most active at 31-32 degrees C. The probability of occurrence of the species was influenced more by the differences in the random selection of parcels rather than the random differences in the survey days. Around the proximate observation point the bush covered areas was significantly higher than average in the parcels. Our results showed that niche segregation based on fine scale habitat patches had a fundamental role in the coexistence of the two lizard species. L. agilis preferred the more open spaces, whereas L. viridis preferred areas with more bushes, but there was no difference in the daily activity pattern of the two species.
机译：不同类型的半自然栖息地在城市环境中对爬行动物的长期生存和维持中具有重要作用。异质的城市绿色岛屿可以提供条件，使竞争物种能够在相对较小的区域中共同生活。但是，共存的关键机制可能因栖息地和分类单元的类型而异。我们调查了镇公墓中两种蜥蜴物种（Lacerta viridis和L. agilis）并存的种群结构，精细的栖息地隔离和diel活动模式。我们假设，由于环境相关的温度调节约束，精细的栖息地隔离是比diel活动模式差异更重要的共存因素。在研究期间，记录了178例敏捷的L. agilis和79例的绿色L. viridis。两种物种的日常活动模式都非常相似，在下午和下午发现了高峰。发现蜥蜴在31-32摄氏度下最活跃。物种出现的可能性受包裹随机选择的差异的影响更大，而不是调查天数的随机差异。在最接近的观察点附近，灌木丛覆盖的区域显着高于包裹中的平均水平。我们的结果表明，基于小规模栖息地斑块的生态位隔离在两种蜥蜴物种的共存中具有根本作用。 L. agilis偏爱较开放的空间，而L. viridis偏爱灌木丛较多的区域，但两种物种的日常活动模式没有差异。

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