A number of recent studies have documented long-term declines in abundances of important arthropod groups, primarily in Europe and North America. These declines are generally attributed to habitat loss, but a recent study [B.C. Lister, A. Garcia, Proc. Natl. Acad. Sci. USA 115, E10397–E10406 (2018)] from the Luquillo Experimental Forest (LEF) in Puerto Rico attributed declines to global warming. We analyze arthropod data from the LEF to evaluate long-term trends within the context of hurricane-induced disturbance, secondary succession, and temporal variation in temperature. Our analyses demonstrate that responses to hurricane-induced disturbance and ensuing succession were the primary factors that affected total canopy arthropod abundances on host trees, as well as walkingstick abundance on understory shrubs. Ambient and understory temperatures played secondary roles for particular arthropod species, but populations were just as likely to increase as they were to decrease in abundance with increasing temperature. The LEF is a hurricane-mediated system, with major hurricanes effecting changes in temperature that are larger than those induced thus far by global climate change. To persist, arthropods in the LEF must contend with the considerable variation in abiotic conditions associated with repeated, large-scale, and increasingly frequent pulse disturbances. Consequently, they are likely to be well-adapted to the effects of climate change, at least over the short term. Total abundance of canopy arthropods after Hurricane Maria has risen to levels comparable to the peak after Hurricane Hugo. Although the abundances of some taxa have declined over the 29-y period, others have increased, reflecting species turnover in response to disturbance and secondary succession.

最近的许多研究表明，主要在欧洲和北美，重要的节肢动物群体的数量长期减少。这些下降通常归因于栖息地的丧失，但是最近的一项研究[BC Lister，A. Garcia，Proc。Natl。学院 科学 美国115，E10397–E10406（2018）]来自波多黎各卢奎洛实验森林（LEF），归因于全球变暖的下降。我们分析了LEF的节肢动物数据，以评估飓风引起的干扰，继发演替和温度随时间变化的长期趋势。我们的分析表明，对飓风引起的干扰和随后的演替的响应是影响寄主树上总冠层节肢动物丰度以及林下灌木上的拐杖丰度的主要因素。环境温度和林下温度对某些节肢动物物种起次要作用，但是随着温度的升高，种群数量的增加与减少的可能性一样。LEF是飓风介导的系统，造成温度变化的主要飓风比迄今为止全球气候变化引起的飓风还大。为了持续存在，LEF中的节肢动物必须应对与反复，大规模和日益频繁的脉冲干扰相关的非生物条件的巨大变化。因此，至少在短期内，它们很可能很好地适应了气候变化的影响。飓风玛丽亚后冠层节肢动物的总丰度已上升到与雨果飓风后的峰值相当的水平。尽管在29年期间某些分类单元的丰度有所下降，但其他分类单元的丰度却有所增加，这反映了由于干扰和继发性演替而引起的物种更新。LEF中的节肢动物必须应对与反复，大规模和日益频繁的脉冲干扰相关的非生物条件的巨大变化。因此，至少在短期内，它们很可能很好地适应了气候变化的影响。飓风玛丽亚后冠层节肢动物的总丰度已上升到与雨果飓风后的峰值相当的水平。尽管在29年期间某些分类单元的丰度有所下降，但其他分类单元的丰度却有所增加，这反映了由于干扰和继发性演替而引起的物种更新。LEF中的节肢动物必须应对与反复，大规模和日益频繁的脉冲干扰相关的非生物条件的巨大变化。因此，至少在短期内，它们很可能很好地适应了气候变化的影响。飓风玛丽亚后冠层节肢动物的总丰度已上升到与雨果飓风后的峰值相当的水平。尽管在29年期间某些分类单元的丰度有所下降，但其他分类单元的丰度却有所增加，这反映了由于干扰和继发性演替而引起的物种更新。飓风玛丽亚后冠层节肢动物的总丰度已上升到与雨果飓风后的峰值相当的水平。尽管在29年期间某些分类单元的丰度有所下降，但其他分类单元的丰度却有所增加，这反映了由于干扰和次生演替而引起的物种更新。飓风玛丽亚后冠层节肢动物的总丰度已上升到与雨果飓风后的峰值相当的水平。尽管在29年期间某些分类单元的丰度有所下降，但其他分类单元的丰度却有所增加，这反映了由于干扰和次生演替而引起的物种更新。