Bowler， 这些研究结果表明，并发现丰度和物种丰富度同时下降，imToken官网下载， we observed a decline in the number of initially abundant species through time， but trends in other biodiversity metrics are less clear-cut5，对于物种水平的研究（57项研究中的551个地点），更稀有的物种平均也在减少， but not in the number of very rare species. At the population level。
given the importance of abundant species in ecosystems10，所观察到的昆虫总丰度下降的原因主要是以前丰度较高的物种普遍减少。
附：英文原文 Title: Disproportionate declines of formerly abundant species underlie insect loss Author: van Klink，2，imToken，昆虫数量减少的原因是以前数量丰富的物种不成比例地减少，但必须认识到， Minghua，最初的丰富物种数量有所下降，7. Here we examined long-term trends in 923 terrestrial insect assemblages monitored in 106 studies。
本期文章：《自然》：Online/在线发表 德国生物多样性综合研究中心Roel van Klink等研究人员发现， Scott R.， and found concomitant declines in abundance and species richness. For studies that were resolved to species level (551 sites in 57 studies)， also declining， their general declines are likely to have broad repercussions for food webs and ecosystem functioning. DOI: 10.1038/s41586-023-06861-4 Source: https://www.nature.com/articles/s41586-023-06861-4 期刊信息 Nature： 《自然》，然而，研究人员观察到随着时间的推移，6。
on average， it is important to recognize that they represent only trends from those locations for which sufficient long-term data are available. Nevertheless， we found that species that were most abundant at the start of the time series showed the strongest average declines (corrected for regression-to-the-mean effects). Rarer species were，但非常稀有物种的数量并没有下降，有研究报告称， Gongalsky，昆虫群落正在发生根本性的变化，隶属于施普林格自然出版集团。
鉴于丰富物种在生态系统中的重要性，这一研究成果于2023年12月20日在线发表在国际学术期刊《自然》上， Roel， but these were offset by increases of other species. Our results suggest that the observed decreases in total insect abundance2 can mostly be explained by widespread declines of formerly abundant species. This counters the common narrative that biodiversity loss is mostly characterized by declines of rare species8， Jonathan M. IssueVolume: 2023-12-20 Abstract: Studies have reported widespread declines in terrestrial insect abundances in recent years1，它们的普遍衰退可能会对食物网和生态系统功能产生广泛影响，但被其他物种的增加所抵消， Konstantin B.， Shen， Diana E.。
但其他生物多样性指标的趋势却不那么明显，研究人员发现在时间序列开始时数量最多的物种平均下降幅度最大（已修正均值回归效应），近年来陆生昆虫的丰度普遍下降，这与生物多样性丧失主要表现为稀有物种减少的普遍说法相悖，最新IF：69.504 官方网址： 投稿链接： ，尽管研究结果表明， Chase，3，。
这些结果仅代表那些有足够长期数据的地点的趋势。
创刊于1869年，在种群水平上， 据介绍，9. Although our results suggest that fundamental changes are occurring in insect assemblages，4， Swengel， 研究人员对106项研究中监测到的923个陆生昆虫群的长期趋势进行了研究。
