8 Works

Anchored phylogenomics and a revised classification of the Planidial Larva Clade of Jewel Wasps (Hymenoptera: Chalcidoidea)

JUNXIA ZHANG, John Heraty, Christopher Darling, Robert Kresslein, Austin Baker, Javier Torréns, Jean-Yves Rasplus, Alan Lemmon & Emily Lemmon
Planidia are free-living, mobile first-instar larvae that are notable in their ability to transition on a single host between different larval stadia, and for completing their development on the host prepupa as ectoparasitoids, effectively acting as larval-pupal external koinobionts. Within Chalcidoidea, a mega-diverse superfamily of parasitoid wasps, taxa with a planidium form a monophyletic group, the Planidial-Larva-Clade (PLC), which has been comprised of three recognized groups: Eutrichosomatinae (Pteromalidae), Perilampidae (Chrysolampinae, Perilampinae, Philomidinae and the unplaced...

Species co-occurrence shapes spatial variability in plant diversity–biomass relationships in natural rangelands under different grazing intensities

Anvar Sanaei, Emma J. Sayer, Hugo Saiz, Zuoqiang Yuan & Arshad Ali
Grazing can alter plant species interactions in natural rangelands, which in turn might influence the productivity of the ecosystem but we do not fully understand how spatial variability in plant diversity-biomass relationships are modulated by grazing intensity. Here, we hypothesized that plant species co-occurrence in rangelands is mainly driven by niche segregation due to grazing and heterogeneity in local resources, and that grazing therefore modulates diversity–biomass relationships. We tested our hypothesis across 35 rangeland sites...

A trail pheromone mediates the mutualism between ants and aphids

Li Chen
Mutualisms, like the ones between ants and aphids, evolve and persist when benefits outweigh the costs from the interactions between the partners. We show here that the trail pheromone of the red imported fire ant, Solenopsis invicta, can enhance these benefits by suppressing aphid walking dispersal and stimulating their reproduction. The cotton aphid, Aphis gossypii, was found to readily perceive and respond to two specific trail pheromonal components. Both Z,E-a-farnesene and E,E-a-farnesene suppressed walking dispersal...

The coordination between leaf and fine root litter decomposition and the difference of their controlling factors

Lulu Guo, Meifeng Deng, Sen Yang, Weixing Liu, Xin Wang, Jing Wang & Lingli Liu
Aim: As the two largest components of plant detritus input, leaf and root litter together determines ecosystem vegetation turnover and nutrient cycling rates. However, it remains unknown the similarities and differences between the controlling factors for their decomposition. We evaluated the relationship between leaf and fine root litter decomposition across biomes, and analyzed how litter traits, climate, soil conditions and decomposers shape their relationship. Location: Global. Time Period: 1984–2020. Major Taxa Studied: Vascular plant. Methods:...

Phylogeography and genetic diversity of the widespread katydid Ducetia japonica (Thunberg, 1815) across China

Zhi Jun Zhou, Yun Xia Zhen, Bei Guan, Lan Ma & Wen Jing Wang
Habitat fragmentation can lower migration rates and genetic connectivity among remaining populations of native species. Ducetia japonica as one of the most widespread katydids in China, but little is known about its genetic structure and phylogeographic distribution. We combined the five-prime region of cytochrome c oxidase subunit I (COI-5P), 11 newly developed microsatellite loci coupled with an ecological niche model (ENM) to examine the genetic diversity and population structure of D. japonica in China and...

Responses of soil temperature, moisture, and respiration to five-year warming and nitrogen addition in a semi-arid grassland

Jian Song, Jianyang Xia, Dafeng Hui, Mengmei Zheng, Jing Wang, Jingyi Ru, Haidao Wang, Qingshan Zhang, Chao Yang & Shiqiang Wan
How climate warming interacts with atmospheric nitrogen (N) deposition to affect carbon (C) release from soils remains largely elusive, posing a major challenge in projecting climate change‒terrestrial C feedback. As part of a five-year (2006–2010) field manipulative experiment, this study was designed to examine the effects of 24-hour continuous warming and N addition on soil respiration and explore the underlying mechanisms in a semi-arid grassland on the Mongolian Plateau, China. Across the five years and...

Long-term litter removal rather than litter addition enhances ecosystem carbon sequestration in a temperate steppe

Jing Wang, Ang Zhang, Yujin Zheng, Jian Song, Jingyi Ru, Mengmei Zheng, Dafeng Hui & Shiqiang Wan
1. Global change can greatly affect plant productivity and subsequently litter input to soil, with potential impacts on soil carbon (C) fluxes. However, the effects of litter layer in mediating C cycling and budget at an ecosystem scale is still not clear. 2. As part of a long-term litter fall manipulation experiment in a temperate steppe on the Mongolian Plateau, this study was conducted to explore effects of litter removal and addition on ecosystem C...

Asymmetric responses of resource use efficiency to previous-year precipitation in a semi-arid grassland

Juanjuan Han, Jiquan Chen, Weiyu Shi, Jian Song, Dafeng Hui, Jingyi Ru & Shiqiang Wan
1. Intensified inter-annual fluctuations in precipitation could profoundly impact terrestrial ecosystems. However, how changes previous-year precipitation influence current ecosystem functioning (e.g., resource use efficiency) in semi-arid regions remains unclear. 2. In this study, water use efficiency (WUE) and light use efficiency (LUE) were investigated in a multi-year precipitation gradient experiment with seven treatment levels: 20%, 40% and 60% decreases and 20%, 40% and 60% increases in the amount of natural rainfall plus ambient precipitation. Plots...

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