111 Works

Codes for simulation and data for: The relationship between local and regional extinction rates depends on species distribution patterns

Chuan Yan, Fangliang He, Jinxing He & Zhibin Zhang
The rapid loss of biodiversity poses a great threat to ecosystem functions and services. Credible estimation of species extinction rates is essential for understanding the magnitude of biodiversity loss and for informing conservation, but this has been a challenge because estimated extinctions are unverifiable due to the lack of data. In this study, we investigated the relationship between local and regional extinctions and assessed the effects of range size, spatial segregation, and patchiness of species...

Retention fraction of 15N-labelled deposited ammonium and nitrate in forests

Geshere Abdisa Gurmesa, Ang Wang, Shanlong Li, Shushi Peng, Wim De Vries, Per Gundersen, Philippe Ciais, Oliver L Phillips, Erik Hobbie, Weixing Zhu, Knute Nadelhoffer, Yi Xi, Edith Bai, Tao Sun, Dexiang Chen, Wenjun Zhou, Yiping Zhang, Yingrong Guo, Jiaojun Zhu, Lei Duan, Dejun Li, Keisuke Koba, Enzai Du, Guoyi Zhou, Xingguo Han … & Yunting Fang
The impacts of enhanced nitrogen (N) deposition on global forest carbon (C) sink and other ecosystem services may depend on whether N is deposited in reduced (mainly as ammonium) or oxidized forms (mainly as nitrate) and the subsequent fate of each. However, the fates of the two key reactive N forms and its contribution to forest C sink is unclear. We conducted ecosystem-scale paired 15N-labelling experiments in nine forests across China to quantify N retention...

Morphological canalization, integration, and plasticity in response to population density in Abutilon theophrasti : Influences of soil conditions and growth stages

Shu Wang & Dao-Wei Zhou
Phenotypic integration and developmental canalization have been hypothesized to constrain the degree of phenotypic plasticity, but little evidence exists, probably due to the lack in studies on the relationships among the three processes, especially for plants under different environments. We conducted a field experiment by subjecting plants of Abutilon theophrasti to three densities, under infertile and fertile soil conditions, and analyzing correlations among canalization, integration, and plasticity in a variety of measured morphological traits after...

An Improved CamShift Algorithm for Target Tracking in Video Surveillance

Chunrong Zhang, Yuansong Qiao, Enda Fallon & Chiangqiao Xu

Expanding the agricultural - sanitation circular economy: opportunities and benefits

Steven Banwart, Laura Carter, Tim Daniell, Yong-Guan Zhu, Hongyan Guo, Jeremy Guest, Stuart Kirk, Barbara Evans, Patrick McKenna & Sarah Dennis
An expanded circular economy between agriculture and sanitation waste (sewage) can recycle essential resources for agriculture through the recovery of water, biomass, and nutrients from sewage at scale. Doing so can help to increase or maintain soil productivity and support agricultural outputs; produce heat and power; reduce Green House Gas (GHG) emissions; and minimise stresses on water reserves.

Ancient horse genomes reveal the timing and extent of dispersals across the Bering Land Bridge

Alisa Vershinina, Peter Heintzman, Duane Froese, Grant Zazula, Molly Cassatt-Johnstone, Love Dalén, Clio Der Sarkissian, Shelby Dunn, Luca Ermini, Cristina Gamba, Pamela Groves, Joshua Kapp, Daniel Mann, Andaine Seguin-Orlando, John Southon, Mathias Stiller, Matthew Wooller, Gennady Baryshnikov, Dmitry Gimranov, Eric Scott, Elizabeth Hall, Susan Hewitson, Irina Kirillova, Pavel Kosintsev, Fedor Shidlovsky … & Beth Shapiro
The Bering Land Bridge (BLB) last connected Eurasia and North America during the Pleistocene. Although the BLB would have enabled transfers of terrestrial biota in both directions, it also acted as an ecological filter whose permeability varied considerably over time. Here we explore the possible impacts of this ecological corridor on genetic diversity within, and connectivity among, populations of a once wide-ranging group, the caballine horses (Equus spp.). Using a panel of 187 mitochondrial and...

Field evidence reveals conservative water use of poplars under high aerosol conditions in Beijing

Bin Wang, Zhenhua Wang, Chengzhang Wang, Xin Wang, Jing Li, Zhou Jia, Ping Li, Jin Wu, Min Chen & Lingli Liu
Anthropogenic aerosols could alter multiple meteorological processes such as radiation regime and air temperature, thereby modifying plant transpiration. However, the lack of field observations at the leaf- and plant-level hinders our ability to understand how aerosols could affect plant water use. Aerosol concentrations in northern China fluctuates periodically over a wide range. Taking advantage of this unique natural experiment opportunity, we conducted a full series of supporting physiological and environmental measurements to explore aerosols' effect...

Spatial patterns and ecological drivers of soil nematode β-diversity in natural grasslands vary among vegetation types and trophic position

Dan Xiong, Cunzheng Wei, Xugao Wang, Xiaotao Lü, Shuai Fang, Yingbin Li, Xiaobo Wang, Wenju Liang, Xingguo Han, T. Martijn Bezemer & Qi Li
1. Understanding biogeographic patterns of community assemblages is a core objective in ecology, but for soil communities these patterns are poorly understood. To understand the spatial patterns and underlying mechanisms of β-diversity in soil communities, we investigated the β-diversity of soil nematode communities along a 3200 km transect across semi-arid and arid grasslands. 2. Spatial turnover and nested-resultant are the two fundamental components of β-diversity, which have been attributed to various processes of community assembly....

Biogeographic diversification of Eranthis (Ranunculaceae) reflects the geological history of the three great Asian plateaus

Kun-Li Xiang, Andrey S. Erst, Jian Yang, Huan-Wen Peng, Rosa Del C. Ortiz, Florian Jabbour, Tatyana V. Erst & Wei Wang
The evolutionary history of organisms with poor dispersal abilities usually parallels geological events. Collisions of the Indian and Arabian plates with Eurasia greatly changed Asian topography and affected regional and global climate as well as biotic evolution. However, the geological evolution of Asia related to these two collisions remains debated. Here, we used Eranthis, an angiosperm genus with poor seed dispersal ability and a discontinuous distribution across Eurasia , to shed light on the orogenesis...

Determinants of heart rate in Svalbard reindeer reveal mechanisms of seasonal energy management

L. Monica Trondrud, Gabriel Pigeon, Steve Albon, Walter Arnold, Alina L. Evans, R. Justin Irvine, Elżbieta Król, Erik Ropstad, Audun Stien, Vebjørn Veiberg, John R. Speakman & Leif Egil Loe
Seasonal energetic challenges may constrain an animal’s ability to respond to changing individual and environmental conditions. Here we investigated variation in heart rate, a well-established proxy for metabolic rate, in Svalbard reindeer, a species with strong seasonal changes in foraging and metabolic activity. In 19 adult females we recorded heart rate, subcutaneous temperature and activity using biologgers. Mean heart rate more than doubled from winter to summer. Typical drivers of energy expenditure, such as reproduction...

Fat storage influences fasting endurance more than body size in an ungulate

L. Monica Trondrud, Gabriel Pigeon, Elżbieta Król, Steve Albon, Alina L. Evans, Walter Arnold, Catherine Hambly, R. Justin Irvine, Erik Ropstad, Audun Stien, Vebjørn Veiberg, John R. Speakman & Leif Egil Loe
1. The fasting endurance hypothesis (FEH) predicts strong selection for large body size in mammals living in environments where food supply is interrupted over prolonged periods of time. The Arctic is a highly seasonal and food restricted environment, but contrary to predictions from the FEH, empirical evidence shows that Arctic mammals are often smaller than their temperate conspecifics. Intraspecific studies integrating physiology and behaviour of different-sized individuals, may shed light on this paradox. 2. We...

Genome-wide investigation and transcriptional profiling of the oxidosqualene cyclase (OSC) genes in wheat (Triticum aestivum L.)

Changfeng Guo, Xingchen Xiong, Huan Dong & Xiaoquan Qi
Triterpene scaffolds are cyclized by differential functional genes of the oxidosqualene cyclase (OSC) gene family, which are widely present in plant species. Thirty-nine OSCs genes were identified from the hexaploid bread wheat (Triticum aestivum L.) genome. The gene structure organization and the distribution of conserved motifs of OSCs gene family revealed that the TaOSC proteins are highly conserved. By phylogenetic analysis, all OSC proteins from wheat and other cereal crops were clustered into eleven subfamilies...

Data from: Latitudinal embryonic thermal tolerance and plasticity shape the vulnerability of oviparous species to climate change

Bao-Jun Sun, Liang Ma, Yang Wang, Chun-Rong Mi, Lauren Buckley, Ofir Levy, Hong-Liang Lu & Wei-Guo Du
Heat tolerance at the immobile embryonic stage is expected to be critical in determining species vulnerability to climate change. However, how the mean and developmental plasticity of embryonic heat tolerance vary geographically, and how these geographic variations affect species’ vulnerability under climate change remain unknown. We experimentally determined the mean and developmental plasticity of embryonic acute heat tolerance (EAHT, i.e., heat shock temperature at which embryonic heartbeats ceased) for three latitudinally-distributed populations of an oviparous...

CPR dataset for: Testing Bergmann's Rule in Marine Copepods

Max D. Campbell, David S. Schoeman, William Venables, Rana Abu-Alhaija, Sonia D. Batten, Sanae Chiba, Frank Coman, Claire H. Davies, Martin Edwards, Ruth Eriksen, Jason D. Everett, Yutaka Fukai, Mitsuo Fukuchi, Octavio Esquivel Garrote, Graham Hosie, Jenny Huggett, David G. Johns, John A. Kitchener, Philippe Koubbi, Felicity R. McEnnulty, Erik Muxagata, Clare Ostle, Karen V. Robinson, Anita Slotwinski, Kerrie M. Swadling … & Anthony J. Richardson
This is the global dataset used for the Campbell et al. (2021) paper “Testing Bergmann’s Rule in marine copepods”. The dataset includes the mean length of copepods weighted by abundance found in 97,830 continuous plankton recorder (CPR) samples. Further, it contains satellite observations for sea surface temperature, chlorophyll-a, and dissolved oxygen (see paper for details). It was a massive collaborative effort to get this dataset assembled by the Global Alliance of CPR Surveys (GACS 2011,...

Data from: Testing genome skimming for species discrimination in the large and taxonomically difficult genus Rhododendron

Chao-Nan Fu, Zhi-Qiong Mo, Jun-Bo Yang, Jie Cai, Lin-Jiang Ye, Jia-Yun Zou, Han-Tao Qin, Wei Zheng, Peter M. Hollingsworth, De-Zhu Li & Lian-Ming Gao
Standard plant DNA barcodes based on 2-3 plastid regions, and nrDNA ITS show variable levels of resolution, and fail to discriminate among species in many plant groups. Genome skimming to recover complete plastid genome sequences and nrDNA arrays has been proposed as a solution to address these resolution limitations. However, few studies have empirically tested what gains are achieved in practice. Of particular interest is whether adding substantially more plastid and nrDNA characters will lead...

Seasonal and annual dynamics of litterfall

Cunguo Wang, Xingbo Zheng, Anzhi Wang, Guanhua Dai, Baokun Zhu, Yueming Zhao, Shijie Dong, Weizhong Zu, Wei Wang, Yiguo Zheng & Mai-He Li
Long-term data of litterfall can indicate overall forest functions in forest ecosystems. We collected monthly (May – October) and annual (1981 – 2018) litterfall including leaves, twigs, bark, reproductive and miscellaneous fractions in a mixed mature Pinus koraiensis forest on Changbai Mountain in Northeast, China, across 30 years. Based on these long-term litterfall data, we analyzed the seasonal and annual variations in different litterfall fractions and their relationships with climatic factors. Climate data were obtained...

Data from: Using local ecological knowledge to build mutualistic networks in hyper-diverse and logistically challenging ecosystems

Lisa Ong, Ahimsa Campos-Arceiz & McConkey Kim R.
1. Collecting interaction data to build frugivory or seed dispersal networks is logistically challenging in ecosystems that have very high plant and animal diversity and/or where fieldwork is difficult or dangerous. Consequently, the majority of available networks are from ecosystems with low species diversity or they represent a sub-set of the community. 2. Here, we propose an approach using local ecological knowledge (LEK) of indigenous communities to build interaction databases and weighted networks that would...

Biodiversity-productivity relationships in a natural grassland community vary under diversity loss scenarios

Qingmin Pan, Amy Symstad, Yongfei Bai, Jianhui Huang, Jianguo Wu, Shahid Naeem, Dima Chen, Dashuan Tian, Qibing Wang & Xingguo Han
Understanding the biodiversity-productivity relationship and underlying mechanisms in natural ecosystems under realistic diversity loss scenarios remains a major challenge for ecologists despite its importance for predicting impacts of rapid loss of biodiversity worldwide. Here we report the results of a plant functional group (PFG) removal experiment conducted on the Mongolian Plateau, the largest remaining natural grassland in the world. Our results demonstrated that the biodiversity-productivity relationship varied among positive linear, neutral, and unimodal forms under...

Morphological trait matching in plant–Hymenoptera and plant–Diptera mutualisms across an elevational gradient

Yan-Hui Zhao, Amparo Lazaro, Hai-Dong Li, Zhibin Tao, Huan Liang, Wei Zhou, Zong-Xin Ren, Kun Xu, De-Zhu Li & Hong Wang
Morphological trait-matching and species abundance are thought to be the main factors affecting the frequency and strength of mutualistic interactions. However, the relative importance of trait-matching and species abundance in shaping species interactions across environmental gradients remains poorly understood, especially for plant–insect mutualisms involving generalist species. Here, we characterised variation in species and trait composition and the relative importance of trait-matching and species abundance in shaping plant–Hymenoptera and plant–Diptera mutualisms in four meadows across an...

Data from: Biomass responses of widely and less-widely naturalized alien plants to artificial light at night

Benedikt Speißer, Yanjie Liu & Mark Van Kleunen
Artificial light at night has rapidly increased during the last century, and could potentially affect many ecological processes, from individuals via communities to entire ecosystems. Recent research has shown that artificial light at night may not only affect the behavior of animals but also growth of plants and vegetation composition. However, it is not known yet whether artificial light at night may also affect other global change components such as plant invasions. Here, we tested...

Multisensory integration facilitates perceptual restoration of an interrupted call in frog

Bicheng Zhu, Yue Yang, Ya Zhou, Ke Deng, Tongliang Wang, Jichao Wang, Yezhong Tang, Michael J. Ryan & Jianguo Cui
How to render an interrupted sound as a complete signal is a common challenge faced by human and non-human animals during vocal communication. Using video and audio playbacks, we showed that neither inserting white noise into the silent gap of an interrupted call nor displaying the dynamic inflating-deflating vocal sac in that same gap restored attraction of the call equivalent to that of a complete call. Simultaneously presenting a dynamic vocal sac along with white...

Leaf δ13C and δ15N of aquatic macrophytes in the arid zone of northwestern China

Xusheng Gong, Zhongqiang Li, Zhiyan Xu, Qiutong Peng, Yuqing Tian, Yang Hu, Zhongqiang Li & Tao Hao
Raw data of species list, life form, carbon isotope ratio (δ13C) and nitrogen isotope ratio (δ15N) for all observations examined across the arid zone of northwestern China. Multi-annual mean precipitation (MAP, mm), multi-annual mean temperature (MAT, oC), potential evapotranspiration (PET, mm), sediment total carbon (STC), sediment total nitrogen (STN), longitude (Long.), latitude (Lat.) and altitude (Alt.) across the arid zone of northwestern China were also provided. We examined the spatial pattern of the leaf δ13C...

The genome assembly and annotation of Magnolia biondii Pamp., a phylogenetically, economically, and medicinally important ornamental tree species

Shanshan Dong & Min Liu
Magnolia biondii Pamp. (Magnoliaceae, magnoliids) is a phylogenetically, economically, and medicinally important ornamental tree species widely grown and cultivated in the north-temperate regions of China. Contributing a genome sequence for M. biondii will help resolve phylogenetic uncertainty of magnoliids and further understand individual trait evolution in Magnolia. We assembled a chromosome-level reference genome of M. biondii using ~67, ~175, and ~154 Gb of raw DNA sequences generated by Pacific Biosciences Single-molecule Real-time sequencing, 10X genomics...

Three‐dimensional soil heterogeneity modulates responses of grassland mesocosms to an experimentally imposed drought extreme

Yongjie Liu, Michiel F. Bortier, Ivan Nijs, Yongshuo Fu, Zhenqing Li, Fujiang Hou & Hans J. De Boeck
Heterogeneity is an intrinsic characteristic of soils, which regulates plant diversity and ecosystem functioning. However, whether soil heterogeneity also modulates responses of plant communities to climate change, including climate extremes, remains largely an open question. Here, we explore responses of plant communities to drought extremes across four levels of spatial soil heterogeneity, with cell sizes varying from very small to very large, i.e. 0, 12, 24 and 48 cm. These were created in mesocosms by...

The complete mitochondrial genome of Eutrichosiphum pasaniae (Okajima, 1908) (Hemiptera: Aphididae: Greenideinae)

Cailing Li, Liyun Jiang, Xiaolu Zhang, Jing Chen & Gexia Qiao
In this study, we sequenced the complete mitochondrial genome of Eutrichosiphum pasaniae through Illumina platform. The circular mitogenome is 16,500 bp in length and composed of 13 protein-coding genes (PCGs), 22 transfer RNA genes (tRNAs), 2 ribosomal RNA genes (rRNAs), a large control region and a special repeat region. The nucleotide composition of whole mitogenome is strongly AT-biased (85.5%). All PCGs start with ATN and end with TAA except for cox1 which terminates with an...

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Affiliations

  • Chinese Academy of Sciences
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  • East China Normal University
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  • Sun Yat-sen University
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  • Beijing Normal University
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  • Zhejiang University
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  • Yunnan University
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  • The Arctic University of Norway
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  • University of Alberta
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  • University of Aberdeen
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  • Lanzhou University
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