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Data from: Carbon isotopes of C3 herbs correlate with temperature on removing the influence of precipitation across a temperature transect in the agro-pastoral ecotone of Northern China
- 负责人：
- DOI：
- doi:10.5061/dryad.f6fq0
- 摘要：
- Plant ?13C–temperature (?-T) relation has been established in many systems and is often used as paleotemperature transfer function. However, it is still unclear about the exact contributions of temperature variation to plant 13C discrimination because of covariation between temperature and precipitation (aridity), which reduces confidence in reconstruction of paleoclimate. In this study, we measured carbon isotope composition (?13C) of 173 samples of C3 perennial herbs from 22 sites across a temperature gradient along the 400 mm isohyet in the farming-pastoral zone of North China. The results showed that precipitation obviously affected the correlations of temperatures and foliar ?13C. After removing the influence of precipitation by analysis of covariance (ANCOVA), a more strongly positive relationship was obtained between site-mean foliar ?13C and annual mean temperature (AMT), with a regression coefficient of 0.1636‰/°C (p = .0024). For widespread species, Artemisia lavandulaefolia and Artemisia capillaries, the slopes (or coefficients) of foliar ?13C and AMT were significantly steeper (larger) than those of foliar ?13C and AMT where the precipitation influence was not excluded, whereas the ?-T coefficients of Polygonum persicaria and Leymus chinensis showed little change across the transect after deducting the precipitation effect. Moreover, the positive relationship between temperature and ?13C over the transect could be explained by soil moisture availability related to temperature. Our results may afford new opportunities for investigating the nature of past climate variability.
Data from: K-13 Propeller gene polymorphisms isolated between 2014 and 2017 from Cameroonian Plasmodium falciparum malaria patients
- 负责人：
- DOI：
- doi:10.5061/dryad.1rk753f
- 摘要：
- The emergence of artemisinin-resistant parasites since the late 2000s at the border of Cambodia and Thailand poses serious threats to malaria control globally, particularly in Africa which bears the highest malaria transmission burden. This study aimed to obtain reliable data on the current state of the kelch13 molecular marker for artemisinin resistance in Plasmodium falciparum in Cameroon. DNA was extracted from the dried blood spots collected from epidemiologically distinct endemic areas in the Center, Littoral and North regions of Cameroon. Nested PCR products from the Kelch13-propeller gene were sequenced and analyzed on an ABI 3730XL automatic sequencer. Of 219 dried blood spots, 175 were sequenced successfully. We identified six K13 mutations in 2.9% (5/175) of samples, including 2 non-synonymous, the V589I allele had been reported in Africa already and one new allele E612K had not been reported yet. These two non-synonymous mutations were uniquely found in parasites from the Littoral region. One sample showed two synonymous mutations within the kelch13 gene. We also observed two infected samples with mixed K13 mutant and K13 wild-type infection. Taken together, our data suggested the circulation of the non-synonymous K13 mutations in Cameroon. Albeit no mutations known to be associated with parasite clearance delays in the study population, there is need for continuous surveillance for earlier detection of resistance as long as ACTs are used and scaled up in the community.
Data from: Pollen competition between morphs in a pollen-color dimorphic herb and the loss of phenotypic polymorphism within populations
- 负责人：
- DOI：
- doi:10.5061/dryad.85fm2
- 摘要：
- Flower color polymorphism is relatively uncommon in natural flowering plants, suggesting that maintenance of different color morphs within populations is difficult. To address the selective mechanisms shaping pollen-color dimorphism, pollinator preferences and reproductive performance were studied over three years in Epimedium pubescens in which some populations had plants with either green or yellow pollen (and anthers). Visitation rate and pollen removal and receipt by the bee pollinator (Andrena emeishanica) did not differ between the two color morphs. Compared to the green morph, siring success of the yellow morph’s pollen was lower, but that of mixtures of pollen from green and yellow morphs was lowest. This difference, corresponding to in and ex vivo experiments on pollen performance, indicated that pollen germination, rather than tube growth, of the green morph was higher than that of the yellow morph and was seriously constrained in both morphs if a pollen competitor was present. A rare green morph may invade a yellow-morph population, but the co-existence of pollen color variants is complicated by the reduced siring success of mixed pollinations. Potential pollen competition between morphs may have discouraged the maintenance of multiple phenotypes within populations, a cryptic mechanism of competitive exclusion.
Data from: Social brain volume is associated with in-degree social network size among older adults
- 负责人：
- DOI：
- doi:10.5061/dryad.7m70n
- 摘要：
- The social brain hypothesis proposes that large neocortex size evolved to support cognitively demanding social interactions. Accordingly, previous studies have observed that larger orbitofrontal and amygdala structures predict the size of an individual's social network. However, it remains uncertain how an individual's social connectedness reported by other people is associated with the social brain volume. In this study, we found that a greater in-degree network size, a measure of social ties identified by a subject's social connections rather than by the subject, significantly correlated with a larger regional volume of the orbitofrontal cortex, dorsomedial prefrontal cortex and lingual gyrus. By contrast, out-degree size, which is based on an individual's self-perceived connectedness, showed no associations. Meta-analytic reverse inference further revealed that regional volume pattern of in-degree size was specifically involved in social inference ability. These findings were possible because our dataset contained the social networks of an entire village, i.e. a global network. The results suggest that the in-degree aspect of social network size not only confirms the previously reported brain correlates of the social network but also shows an association in brain regions involved in the ability to infer other people's minds. This study provides insight into understanding how the social brain is uniquely associated with sociocentric measures derived from a global network.
Data from: Prognostic significance of serum albumin in patients with stable coronary artery disease treated by percutaneous coronary intervention
- 负责人：
- DOI：
- doi:10.5061/dryad.fn6730j
- 摘要：
- the data of all patients admitted to Shinonoi General Hospital between October 2014 and October 2017 for newly diagnosed stable CAD, treated via elective
Openfoodtox: Efsa'S Chemical Hazards Database
- 负责人：
- 关键词：
- contaminants critical study data collection data model ecological hazard feed additives food additives food contact materials food manufacturing products nutrient sources
- DOI：
- doi:10.5281/zenodo.344883
- 摘要：
- e described in the EFSA journal editorial (Dorne et al., 2017).;;Format: Excel (XLSX); Contact: data.collection@efsa.europa.euData model based on the OECD
GBIF Occurrence Download
- 负责人：
- DOI：
- doi:10.15468/dl.ta5sfq
- 摘要：
- Review (MNCR) and associated benthic marine data held and managed by JNCC. 2 records from St Andrews BioBlitz 2014. 93 records from DASSH Data Archive
GBIF Occurrence Download
- 负责人：
- DOI：
- doi:10.15468/dl.cbv1xh
- 摘要：
- rainian coast of the Black Sea (2017). 4 records from MVZ Herp Observations (Arctos). 1 records from Anillamiento SEO_Bird ringing. 7 records from Anymals
GBIF Occurrence Download
- 负责人：
- DOI：
- doi:10.15468/dl.3kzm7k
- 摘要：
- A dataset containing 656 species occurrences available in GBIF matching the query: BasisOfRecord: Specimen or Human Observation Year: 1000-2017
Data from: Ringed seal (Pusa hispida) seasonal movements, diving, and haul-out behavior in the Beaufort, Chukchi, and Bering seas (2011–2017)
- 负责人：
- 关键词：
- DOI：
- doi:10.5061/dryad.zpc866t65
- 摘要：
- transmitters on ringed seals in the summers of 2011, 2014, and 2016 near Utqia?vik (formerly Barrow), Alaska to monitor their movements, diving, and haul
