Elevated CO2, nutrition dilution, and shifts in Earth’s insect abundance

IF 5.8 1区农林科学 Q1 BIOLOGY

Current opinion in insect science Pub Date : 2024-08-30 DOI:10.1016/j.cois.2024.101255

Ellen AR Welti , Michael Kaspari

引用次数: 0

Abstract

Declining insect populations are concerning, given the numerous ecosystem services provided by insects. Here, we examine yet another threat to global insect populations — nutrient dilution, the reduction in noncarbon essential nutrients in plant tissues. The rise of atmospheric CO₂, and subsequent ‘global greening’, is a major driver of nutrient dilution. As plant nutrient concentrations are already low compared to animal tissues, further reductions can be detrimental to herbivore fitness, resulting in increased development times, smaller intraspecific body sizes, reduced reproduction, and reduced population sizes. By altering herbivore populations and traits, nutrient dilution can ramify up trophic levels. Conservation of Earth’s biodiversity will require not just protection of habitat, but reductions in anthropogenic alterations to biogeochemical cycles, including the carbon cycle.

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二氧化碳升高、营养稀释和地球昆虫数量的变化。

昆虫提供了大量生态系统服务，昆虫数量的减少令人担忧。在这里，我们将探讨全球昆虫数量面临的另一个威胁--养分稀释，即植物组织中非碳必需养分的减少。大气中二氧化碳含量的上升以及随之而来的 "全球绿化 "是造成养分稀释的主要原因。与动物组织相比，植物养分浓度已经很低，进一步降低会损害食草动物的健康，导致发育时间延长、种内体型变小、繁殖能力下降和种群数量减少。通过改变食草动物的数量和特征，营养稀释会沿着营养级向上蔓延。保护地球的生物多样性不仅需要保护栖息地，还需要减少对生物地球化学循环（包括碳循环）的人为改变。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Current opinion in insect science BIOLOGYECOLOGYENTOMOLOGY-ECOLOGY

CiteScore

10.40

自引率

1.90%

发文量

113

期刊介绍： Current Opinion in Insect Science is a new systematic review journal that aims to provide specialists with a unique and educational platform to keep up–to–date with the expanding volume of information published in the field of Insect Science. As this is such a broad discipline, we have determined themed sections each of which is reviewed once a year. The following 11 areas are covered by Current Opinion in Insect Science. -Ecology -Insect genomics -Global Change Biology -Molecular Physiology (Including Immunity) -Pests and Resistance -Parasites, Parasitoids and Biological Control -Behavioural Ecology -Development and Regulation -Social Insects -Neuroscience -Vectors and Medical and Veterinary Entomology There is also a section that changes every year to reflect hot topics in the field. Section Editors, who are major authorities in their area, are appointed by the Editors of the journal. They divide their section into a number of topics, ensuring that the field is comprehensively covered and that all issues of current importance are emphasized. Section Editors commission articles from leading scientists on each topic that they have selected and the commissioned authors write short review articles in which they present recent developments in their subject, emphasizing the aspects that, in their opinion, are most important. In addition, they provide short annotations to the papers that they consider to be most interesting from all those published in their topic over the previous year.