485 Works

Data from: Environmental DNA for the enumeration and management of Pacific salmon

Taal Levi, Jennifer M. Allen, Donovan Bell, John Joyce, Joshua R. Russell, David A. Tallmon, Scott C. Vulstek, Chunyan Yang & Douglas W. Yu
Pacific salmon are a keystone resource in Alaska, generating annual revenues of well over ~US$500 million/yr. Due to their anadromous life history, adult spawners distribute amongst thousands of streams, posing a huge management challenge. Currently, spawners are enumerated at just a few streams because of reliance on human counters and, rarely, sonar. The ability to detect organisms by shed tissue (environmental DNA, eDNA) promises a more efficient counting method. However, although eDNA correlates generally with...

Data from: The topological differences between visitation and pollen transport networks: a comparison in species rich communities of the Himalaya-Hengduan Mountains

Yan-Hui Zhao, Amparo Lazaro, Zong-Xin Ren, Wei Zhou, Hai-Dong Li, Zhi-Bin Tao, Kun Xu, Zhi-Kun Wu, Lorne M. Wolfe, Li De-Zhu & Wang Hong
Pollination networks are usually constructed and assessed by direct field observations which commonly assume that all flower visitors are true pollinators. However, this assumption is often invalid and the use of data based on mere visitors to flowers may lead to a misunderstanding of intrinsic pollination networks. Here, using a large dataset by both sampling floral visitors and analyzing their pollen loads, we constructed 32 networks pairs (visitation vs. pollen transport) across one flowering season...

Data from: Implicit violent imagery processing among fans and non-fans of violent music

Yanan Sun, Xuejing Lu, Mark Williams & William Forde Thompson
It is suggested that long-term exposure to violent media may decrease sensitivity to depictions of violence. However, it is unknown whether persistent exposure to music with violent themes affects implicit violent imagery processing. Using a binocular rivalry paradigm, we investigated whether the presence of violent music influences conscious awareness of violent imagery among fans and non-fans of such music. Thirty-two fans and 48 non-fans participated in the study. Violent and neutral pictures were simultaneously presented...

Data from: Ferula paeoniifolia sp. nov. (Apiaceae) from Sichuan, China

Xiangguang Ma, Chenyang Liao, Yi Chen & Hanwen Xu
Ferula paeoniifolia X. G. Ma & C. Y. Liao sp. nov., from Sichuan Province, Southwest China, is described and illustrated. The new species is most similar to F. kingdon-wardii Wolff in morphology, but differs significantly in its ternate-2-pinnate compound leaves comprising much broader leaflets. The key morphological characteristics and nuclear ribosomal internal transcribed spacer (ITS) region were also compared between F. paeoniifolia and its relatives, which revealed a new species to Ferula L.

Data from: Characterization of cytoplasmic viscosity of hundreds of single tumor cells based on micropipette aspiration

Ke Wang, Xiaohao H. Sun, Yi Zhang, Teng Zhang, Yu Zheng, Yuanchen C. Wei, Peng Zhao, Deyong Y. Chen, Hengan A. Wu, Wenhui H. Wang, Rong Long, Junbo B. Wang & Jian Chen
Background: Cytoplasmic viscosity (μc) is a key biomechanical parameter for evaluating the status of cellular cytoskeletons. Previous studies focused on white blood cells, but the data of cytoplasmic viscosity for tumor cells were missing. Methodology: Tumor cells (H1299, A549 and drug-treated H1299 with compromised cytoskeletons) were aspirated continuously through a micropipette at a pressure of -10 kPa or -5 kPa where aspiration lengths as a function of time were obtained and translated to cytoplasmic viscosity...

Data from: Chromosomal level reference genome of Tachypleus tridentatus provides insights into evolution and adaptation of horseshoe crabs

Li Gong, Guangyi Fan, Yandong Ren, Yongjiu Chen, Liqin Liu, Qiang Qiu, Yanli Qin, Bing-Jian Liu, Lihua Jiang, Haorong Li, Yan Zeng, Qionghua Gao, Chen Zhang, Zhongkai Wang, Hui Jiang, Jinfu Tian, He Zhang, Xin Liu, Xun Xu, Wen Wang, Zhenming Lv, Yongxin Li, Bingjian Liu & Zhenming Lü
Horseshoe crabs including Tachypleus tridentatus are a group of marine arthropods living fossil species which have existed on the earth for 500 million years. However, the genetic mechanisms underlying their unique adaptive ability are still unclear. Here, we assembled the first chromosome-level T. tridentatus genome, and proofed that this genome is of very high quality with contig N50 1.69 Mb. By comparison with other arthropods, some gene families of T. tridentatus experienced significant expansion, whichare...

Data from: Phylogeographic diversification and postglacial range dynamics shed light on the conservation of the kelp Saccharina japonica

Jie Zhang, Jianting Yao, Zi-Min Hu, Alexander Jueterbock, Norishige Yotsukura, Tatiana N. Krupnova, Chikako Nagasato & Delin Duan
Studies of postglacial range shifts could enhance our understanding of seaweed species’ responses to climate change, and hence facilitate the conservation of natural resources. However, the distribution dynamics and phylogeographic diversification of the commercially and ecologically important kelp Saccharina japonica in the Northwest Pacific (NWP) are still poorly surveyed. In this study, we analyzed the evolutionary history of S. japonica using two mitochondrial markers and 24 nuclear microsatellites. A STRUCTURE analysis revealed two partially isolated...

Data from: Increased snowfall weakens complementarity of summer water use by different plant functional groups

Yonggang Chi, Lei Zhou, Qingpeng Yang, Shaopeng Li & Shuxia Zheng
Winter snowfall is an important water source for plants during summer in semiarid regions. Snow, rain, soil water, and plant water were sampled for hydrogen and oxygen stable isotopes analyses under control and increased snowfall conditions in the temperate steppe of Inner Mongolia, China. Our study showed that the snowfall contribution to plant water uptake continued throughout the growing season and was detectable even in the late growing season. Snowfall versus rainfall accounted for 30%...

Data from: Spatial variation in leaf nutrient traits of dominant desert riparian plant species in an arid inland river basin of China

Xiaolong Zhang, Jihua Zhou, Tianyu Guan, Wentao Cai, Lianhe Jiang, Liming Lai, Nannan Gao & Yuanrun Zheng
Understanding how patterns of leaf nutrient traits respond to groundwater depth is crucial for modeling the nutrient cycling of desert riparian ecosystems and forecasting the responses of ecosystems to global changes. In this study, we measured leaf nutrients along a transect across a groundwater depth gradient in the downstream Heihe River to explore the response of leaf nutrient traits to groundwater depth and soil properties. We found that leaf nutrient traits of dominant species showed...

Data from: Origin of angiosperms and the puzzle of the Jurassic gap

Hong-Tao Li, Ting-Shuang Yi, Lian-Ming Gao, Peng-Fei Ma, Ting Zhang, Jun-Bo Yang, Matthew A. Gitzendanner, Peter W. Fritsch, Jie Cai, Yang Luo, Hong Wang, Michelle Van Der Bank, Shu-Dong Zhang, Qing-Feng Wang, Jian Wang, Zhi-Rong Zhang, Chao-Nan Fu, Jing Yang, Peter M. Hollingsworth, Mark W. Chase, Douglas E. Soltis, Pamela S. Soltis & De-Zhu Li
Angiosperms are by far the most species-rich clade of land plants, but their origin and early evolutionary history remain poorly understood. We reconstructed angiosperm phylogeny based on 80 genes from 2,881 plastid genomes representing 85% of extant families and all orders. With a well-resolved plastid tree and 62 fossil calibrations, we dated the origin of the crown angiosperms to the Upper Triassic, with major angiosperm radiations occurring in the Jurassic and Lower Cretaceous. This estimated...

Data from: Species richness mediates within-species nutrient resorption: implications for the biodiversity-productivity relationship

Xiao-Tao Lü, Yan-Yu Hu, Amelia A. Wolf & Xingguo Han
1.Between-species variation in nutrient resorption is one of the mechanisms explaining the positive relationship between biodiversity and primary productivity. Yet, the role of within-species variations in nutrient resorption in mediating the relationship between biodiversity and productivity remains unclear. 2.We examined how within-species nutrient resorption, and ultimately productivity, respond to changes in species richness by using four traits related to nitrogen and phosphorus use in four dominant species from different plant functional groups in a biodiversity...

Soil dissolved organic carbon in terrestrial ecosystems: global budget, spatial distribution and controls

Xiaofeng Xu, Ziyu Guo, Yihui Wang & Zhongmei Wan
Aims: Soil dissolved organic carbon (DOC) is a primary form of labile carbon in terrestrial ecosystems and therefore plays a vital role in soil carbon cycling. This study aims to quantify the budgets of soil DOC at biome- and global levels and to examine the variations in soil DOC and their environmental controls. Location: Global Time period: 1981 - 2019 Method: We compiled a global dataset and analyzed the concentration and distribution of DOC across...

Activation of astrocytes in hippocampus decreases fear memory through adenosine A1 receptors

Yan-Qin Yu, Yulan Li, Lixuan Li, Jintao Wu, Zhenggang Zhu, Xiang Feng, Liming Qin, Yuwei Zhu, Zilong Qiu & Shumin Duan
Astrocytes respond to and regulate neuronal activity, yet their role in mammalian behavior remains incompletely understood. Especially unclear is whether, and if so how, astrocyte activity regulates contextual fear memory, the dysregulation of which leads to pathological fear-related disorders. We generated GFAP-ChR2-EYFP rats to allow the specific activation of astrocytes in vivo by optogenetics. We found that after memory acquisition within a temporal window, astrocyte activation disrupted memory consolidation and persistently decreased contextual but not...

Data from: Brachial supporting structure of Spiriferida (Brachiopoda)

Zhiwei Yuan, Wen Guo, Dan Lü & Yuanlin Sun
The filter-feeding organ of some extinct brachiopods is supported by a skeletal apparatus called the brachidium. Although relatively well-studied in Atrypida and Athyridida, the brachidial morphology is usually neglected in Spiriferida. To investigate the variations of brachidial morphology in Spiriferida, 65 species belonging to eight superfamilies were analyzed. Based on the presence/absence of the jugal processes and normal/modified primary lamellae of the spiralia, four types of brachidium are recognized. Type-I (with jugal processes) and Type-II...

A three year trans-generational plasticity in life history traits

Zhaoren Wang
1. Environmental conditions of maternal plants influence adaptive strategies of their progeny via the seed phenotype. Although traditionally, studies have explained patterns of reproduction traits in response to stresses, such as the changes in seed mass and seed germinability under different maternal conditions. However, it is still unclear how maternal effects affect progeny dispersal and germination strategy or how many generations plasticity persists. 2. Plants from diaspore types A and C of the diaspore-heteromorphic annual...

Mutant sequences of OsGSTU17

Xue Yang, Zhihai Wu & Jie Gao
Glutathione S-transferases (GSTs) are a family of phase II detoxification enzymes whose main function is to improve plant resistance to stresses. To understand the structural effects of tau class GSTs on their function, using OsGSTU17 as an example, we predicted three pairs of residues involving in the interactions between its domains and linker region, and obtained the corresponding single mutation sequences through site-directed mutating Arg20, Glu74 and Asp77 which involved the hydrogen bonds and salt...

Patterns of nitrogen and phosphorus pools in terrestrial ecosystems in China

Yi-Wei Zhang, Yanpei Guo, Zhiyao Tang, Yuhao Feng, Xinrong Zhu, Wenting Xu, Yongfei Bai, Guoyi Zhou, Zongqiang Xie & Jingyun Fang
Recent increases in atmospheric carbon dioxide (CO2) and temperature relieve the limitation of these two on terrestrial ecosystem productivity, while nutrient availability constrains the increasing plant photosynthesis more intensively. Nitrogen (N) and phosphorus (P) are critical for plant physiological activities and consequently regulates ecosystem productivity. Here, for the first time, we mapped N and P densities of leaves, woody stems, roots, litter and soil in forest, shrubland and grassland ecosystems across China, based on an...

Association of leaf silicon content with chronic wind exposure across and within herbaceous plant species

Yao-Bin Song, Yu-Kun Hu, Xu Pan, Guo-Fang Liu, Ming Dong & Johannes H. C. Cornelissen
Aim: High foliar silicon (henceforth Si) concentration protects plant tissues against herbivory but protection against several abiotic stressors has been proposed too, though the adaptive significance of these functions is still being debated. We aimed to explore the potential relationships between foliar Si content and chronic wind exposure across a large scale and multiple species, and analyze an overlooked alternative or complementary function of silicon in leaves: mechanical protection against wind. Location: Mainland China. Time...

Cryptic diversity on cliffs: Aster sanqingensis, a new species of Asteraceae from Eastern China

Guojin Zhang, Jiahao Shen, Bohan Jiao, Guohao Niu, Fanghua Zhong, Guo Li & Tiangang Gao
It is generally believed that cliffs bear low biodiversity because of its harsh habitats. However, another reason, i.e. insufficient investigation caused by the inaccessibility of the cliffs, could not be excluded. In the genus Aster, two cliff species, Aster fanjingshanicus and Aster tianmenshanensis, respectively growing on the slate and limestone cliffs, were established. During our extensive field investigations, the third cliff species of Aster growing on granite cliffs from Eastern China was found. Based on...

Modelled annual average percentage yield loss due to ozone damage for four global staple crops, 2010-2012 version 2

K. Sharps, G. Mills, D. Simpson, H. Pleijel, M. Frei, K. Burkey, L. Emberson, J. Uddling, M. Broberg, Z. Feng, K. Kobayashi & M. Agrawal
Modelled average percentage yield loss due to ground-level ozone pollution (per 1 degree by 1 degree grid cell) are presented for the crops maize (Zea mays), rice (Oryza sativa), soybean (Glycine max) and wheat (Triticum aestivum) for the period 2010-2012. Data are on a global scale, based on the distribution of production for each crop, according to the Food and Agriculture Organisation’s (FAO) Global Agro-Ecological Zones (GAEZ) crop production data for the year 2000. Modelled...

Data from: Long-term monitoring of seed dispersal by Asian elephants in a Sundaland rainforest

Wei Harn Tan, Adeline Hii, Alicia Solana-Mena, Ee Phin Wong, Ange Tan, Anders Kromann-Clausen, Param Pura, Muhamad Tauhid Tunil, Sudin Din, Chiew Foan Chin & Ahimsa Campos-Arceiz
Asian elephants (Elephas maximus) have inhabited almost all forests in tropical Asia until recently, yet little is known about their role in ecological processes, particularly in the Sundaic forests of Southeast Asia. These forests are peculiar in their phenology, with supra-annual and highly irregular episodes of mast fruiting. Here we present a long-term (six-year) monitoring of the seeds dispersed by elephants in dipterocarp forests of northern Peninsular Malaysia. We conducted monthly dung surveys at two...

Data from: Bacteria, protists and fungi may hold clues of seamount impact on diversity and connectivity of planktonic community

Rongjie Zhao
The interacting features of topography and hydrography around deep seamounts have strong influence on plankton biogeography. In addition, the intrinsic properties of various biological taxa inherently shape their distribution. Therefore, bacterial, protist and fungal diversity was investigated across the water column above and below the summit of a flat-topped seamount in the Western Pacific Ocean. We determined the distribution and connectivity patterns of bacteria, protists and fungi around the seamount, and explored the processes driving...

Data from: Phosphorus alleviation of nitrogen-suppressed methane sink in global grasslands

Lihua Zhang, Fenghui Yuan, Junhong Bai, Hongtao Duan, Xueying Gu, Longyu Hou, Yao Huang, Mingan Yang, Jinsheng He, Zhenghua Zhang, Lijun Yu, Changchun Song, David Lipson, Donatella Zona, Walter Oechel, Ivan Janssens & Xiaofeng Xu
Grassland ecosystems account for more than 10% of the global CH4 sink in soils. A 4-year field experiment found that addition of P alone did not affect CH4 uptake and experimental addition of N alone significantly suppressed CH4 uptake, while concurrent N and P additions suppressed CH4 uptake to a lesser degree. A meta-analysis including 382 data points in global grasslands corroborated these findings. Global extrapolation with an empirical modeling approach estimated that contemporary N...

Keystone species affect the relationship between soil microbial diversity and ecosystem function under land use change in subtropical China

Fan Yang, Qiong Chen, Qian Zhang, Chunyan Long, Wei Jia & Cheng Xiaoli
Soil microbial diversity affects soil chemical cycling and ecosystem function. However, how highly connected keystone species regulate associated microbial structure and function (of the whole community and of specialized species), irrespective of their abundance under land use change, remains unresolved. Here, we identified the relationship between microbial diversity [soil phospholipid fatty acid (PLFA) richness and composition, and ammonia-oxidizing archaea and bacteria (AOA and AOB) communities] with both a broad (i.e., microbial respiration) and specialized function...

Data from: Habitat loss-biodiversity relationships are influenced by assembly processes and the spatial configuration of area loss

Deyi Yin, Qing Ye & Marc Cadotte
Habitat loss greatly threatens biodiversity worldwide. However, how different facets of biodiversity (taxonomic, phylogenetic and functional diversity) decline with habitat loss is currently poorly understood. Habitat loss-biodiversity relationships, while important to understand in their own right, have the potential to reveal the underlying mechanisms that naturally structure plant communities and can further illuminate how spatial configurations of habitat loss affect biodiversity in a given amount of habitat. In this study, we used four spatial point...

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