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opencc-zeroAug 2021View details →

Plant diversity data from modern sedimentary DNA of lakes in Siberia and China

Here we provide a large dataset on genetic plant diversity retrieved from surface sedimentary DNA (sedDNA) of lakes from Siberia and China spanning over a large environmental gradient. Our dataset encompasses sedDNA sequence data of 244 surface lake sediments and 3 soil samples originating from Siberia and Chinese lakes. We used a PCR-based metabarcoding approach combined with Next-Generation Sequencing to assess the modern and local plant diversity in and around the analysed lake localities. As a plant specific metabarcode we applied the established chloroplastidal P6 loop trnL marker for plant diversity assessment. PCR products were sequenced on four independent Illumina sequencing runs (ALRK-7, ALRK-3, AGAK-5 and HQD-2).

opencc-zeroSep 2021View details →

Pollen transport networks reveal highly diverse and temporally stable plant-pollinator interactions in an Appalachian floral community

Floral visitation alone has been typically used to characterize plant-pollinator interaction networks even though it ignores differences in the quality of floral visits (e.g. transport of pollen) and thus may overestimate the number and functional importance of pollinating interactions. However, how network structural properties differ between floral visitation and pollen transport networks is not well understood. Furthermore, the strength and frequency of plant-pollinator interactions may vary across fine temporal scales (within a single season) further limiting our predictive understanding of the drivers and consequences of plant-pollinator network structure. Thus, evaluating the structure of pollen transport networks and how they change within a flowering season may help increase our predictive understanding of the ecological consequences of plant-pollinator network structure. Here we compare plant-pollinator network structure using floral visitation and pollen transport data and evaluate within-season variation in pollen transport network structure in a diverse plant-pollinator community. Our results show that pollen transport networks provide a more accurate representation of the diversity of plant-pollinator interactions in a community but that floral visitation and pollen transport networks do not differ in overall network structure. Pollen transport network structure was relatively stable throughout the flowering season despite changes in plan and pollinator species composition. Overall, our study highlights the need to improve our understanding of the drivers of plant-pollinator network structure in order to more fully understand the process that govern the assembly of these interactions in nature.

opencc-zeroOct 2021View details →

Data from: Geographical patterns in phylogenetic diversity of Chinese woody plants and its application for conservation planning

Aim: Biodiversity hotspots are widely used as conservation priorities to preserve the tree of life. However, many conservation practices identify biodiversity hotspots without considering phylogenetic diversity (PD), which reflects total evolutionary history and feature diversity of a region. Moreover, conservation planning rarely distinguishes between neo- and paleo-biodiversity hotspots despite their differences. Here, we 1) estimated large-scale patterns in PD of woody plants, 2) identified neo- and paleo-biodiversity hotspots, and 3) demonstrated their implication in conservation planning, with special focus on Hengduan Mountains and southern China. Location: China. Methods: Distributions of 11,405 woody species from the Atlas of Woody Plants in China were updated, and were transformed into a grid of 50 × 50 km2. By integrating distribution maps with a genus-level phylogeny of angiosperms, we estimated Faith's PD of each grid cell and evaluated the contribution of species relatedness to PD at given levels of species diversity (i.e. standardized PD, sPD) using regressions and three null models. Then we identified areas with significantly lower or higher sPD than expected as neo- and paleo-hotspots and estimated the coverage of protected areas in these regions. Results: Species diversity and PD decreased towards the north. Southern China had high species diversity, PD and sPD, while Hengduan Mountains had high species diversity and PD but low sPD. The coverage of protected areas in southern China was less than half of that in Hengduan Mountains and entire China. Main conclusions: Our results identified Hengduan Mountains as a neo-hotspot and southern China as a paleo-hotspot, highlighting their importance for biodiversity conservation. Compared to Hengduan Mountains, southern China has low coverage of protected areas, which calls for more conservation attention. Our study demonstrates a way of incorporating the phylogenetic component in the identification of neo- and paleo-hotspots, and hence of achieving a more complete perception of biodiversity patterns for conserving the tree of life.

opencc-zeroDec 2022View details →

Plant and soil microbial diversity and related spatial and environmental factors in the grasslands of northern China

Plant and soil microbial diversity and related spatial and environmental factors in the grasslands of northern China from 2018 and 2019. The data included 54 and 27 sites in 2018 and 2019 respectively. The data table contains two sheets, one for 2018 and the other for 2019. Spatial factors include longitude and latitude; climatic factors include mean annual temperature, mean annual precipitation, temperature seasonality, precipitation seasonality, potential evapotranspiration, and aridity index; soil factors include soil bulk density, soil moisture, soil pH, soil organic carbon, soil clay content, soil silt content, soil sand content, soil total carbon, soil total nitrogen, and soil C:N ratio; plant functional diversity include functional richness (FRic), functional evenness (FEve), functional divergence (FDiv), functional dispersion (FDis), Rao's quadratic entropy (RaoQ); community-weighted mean (CWM) traits include specific leaf area (SLA), leaf dry matter content (LDMC), leaf nitrogen content (leafN),ratio of leaf carbon to nitrogen (leaf C:N), and stem density; soil microbial diversity include bacterial diversity and fungal diversity; fungal functional guilds include pathotrophic fungi, saprotrophic fungi, arbuscular mycorrhizal fungi, and ectomycorrhizal fungi; bacterial functional guilds include aerobic chemoheterotrophy, predatory or exoparasitic, cellulolysis, aerobic nitrite oxidation, sulfur respiration, nitrate reduction, ureolysis, aromatic compound degradation, intracellular parasites, fermentation, and methanotrophy in the data sheet of 2018. Soil microbial diversity include bacterial diversity and fungal diversity; fungal functional guilds include pathotrophic fungi, saprotrophic fungi, arbuscular mycorrhizal fungi, and ectomycorrhizal fungi; bacterial functional guilds include aerobic chemoheterotrophy, predatory or exoparasitic, cellulolysis, aerobic nitrite oxidation, sulfur respiration, nitrate reduction, ureolysis, aromatic compound degradation, intracellular parasites, fermentation, and methanotrophy in the data sheet of 2019.

opencc-zeroJan 2023View details →

Tree identity and diversity directly affect soil moisture and temperature but not soil carbon ten years after planting

1. Soil C is the largest C pool in forest ecosystems that contributes to C sequestration and mitigates climate change. Tree diversity enhances forest productivity, so diversifying the tree species composition, notably in managed forests, could increase the quantity of organic matter being transferred to soils, and alter other soil properties relevant to the C cycle. 2. A ten-year-old tree diversity experiment was used to study the effects of tree identity and diversity (functional and taxonomic) on soils. Surface (0-10 cm) mineral soil was repeatedly measured for soil C concentration, C:N ratio, pH, moisture and temperature in twenty-four tree species mixtures and twelve corresponding monocultures (replicated in four blocks). 3. Soil pH, moisture and temperature responded to tree diversity and identity. Greater productivity in above- and below-ground tree components did not increase soil C concentration. Soil pH increased and soil moisture decreased with functional diversity, more specifically, when species had different growth strategies and shade tolerances. Functional identity affected soil moisture and temperature, such that tree communities with more slow-growing and shade-tolerant species had greater soil moisture and temperature. Higher temperature was measured in communities with broadleaf-deciduous species compared to communities with coniferous-evergreen species. 4. We conclude that long-term soil C cycling in forest plantations will likely respond to changes in soil pH, moisture and temperature that is mediated by tree species composition, since tree species affect these soil properties through their litter quality, water uptake and physical control of soil microclimates.

opencc-by-4.0Jun 2023View details →

Fig. 4 in Mylabrini diversity and host plants in a Saharan oasis ecosystem with an updated checklist of Meloidae from Algeria (Coleoptera)

Fig. 4 – Major blister beetles host plants in the oasis ecosystem A, Hedysarum carnosum, B, Aizoon hispanicum, C, Silybum marianum, D, Moricandia arvensis.

Fig. 1 in Phytochemical and biological studies on rare and endangered plants endemic to China. Part XIV. Structurally diverse terpenoids from the twigs and needles of the endangered plant Picea brachytyla

Fig. 1. Diterpenoids from Picea brachytyla.

Fig. 19 in Glucosinolate structural diversity, identification, chemical synthesis and metabolism in plants

Fig. 19. Retrosynthetic scheme for glucosinolate synthesis.

Fig. 6 in Phytochemical and biological studies on rare and endangered plants endemic to China. Part XIV. Structurally diverse terpenoids from the twigs and needles of the endangered plant Picea brachytyla

Fig. 6. Key NOE correlations of 2, 4, and 5/6.

Fig. 2 in Phytochemical and biological studies on rare and endangered plants endemic to China. Part XIV. Structurally diverse terpenoids from the twigs and needles of the endangered plant Picea brachytyla

Fig. 2. Triterpenoids from Picea brachytyla.

Fig. 3 in Phytochemical and biological studies on rare and endangered plants endemic to China. Part XIV. Structurally diverse terpenoids from the twigs and needles of the endangered plant Picea brachytyla

Fig. 3. Megastigmene-type derivatives from Picea brachytyla.

Fig. 7 in Phytochemical and biological studies on rare and endangered plants endemic to China. Part XIV. Structurally diverse terpenoids from the twigs and needles of the endangered plant Picea brachytyla

Fig. 7. Experimental ECD curves of 1–3 in MeOH.

Fig. 9 in Glucosinolate structural diversity, identification, chemical synthesis and metabolism in plants

Fig. 9. Illustrative examples of trivial names of glucosinolates. MYR, myrosinase.

Fig. 3 in Phytochemical and biological studies on rare and endangered plants endemic to China. Part XV. Structurally diverse diterpenoids and sesquiterpenoids from the vulnerable conifer Pseudotsuga sinensis

Fig. 3. ORTEP drawings of compounds 1 and 17.

Fig. 2 in Phytochemical and biological studies on rare and endangered plants endemic to China. Part XV. Structurally diverse diterpenoids and sesquiterpenoids from the vulnerable conifer Pseudotsuga sinensis

Fig. 2. Observed key NOE or ROE correlations for indicated compounds.

Fig. 1 in Phytochemical and biological studies on rare and endangered plants endemic to China. Part XV. Structurally diverse diterpenoids and sesquiterpenoids from the vulnerable conifer Pseudotsuga sinensis

Fig. 1. Chemical structures of terpenoids 1–40 from Pseudotsuga sinesis.

Fig. 5 in Phytochemical and biological studies on rare and endangered plants endemic to China. Part XV. Structurally diverse diterpenoids and sesquiterpenoids from the vulnerable conifer Pseudotsuga sinensis

Fig. 5. Experimental and calculated ECD spectra of 6 in MeOH.

Fig. 4 in Phytochemical and biological studies on rare and endangered plants endemic to China. Part XV. Structurally diverse diterpenoids and sesquiterpenoids from the vulnerable conifer Pseudotsuga sinensis

Fig. 4. Experimental ECD spectra of compounds 1–4 and 14 in MeCN.

publicNov 2018View details →

Data from: Plant community evenness responds to spatial plant-soil feedback heterogeneity primarily through the diversity of soil conditioning

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