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Data from: Creosote growth rate and reproduction increase in post-fire environments
- 负责人：
- DOI：
- doi:10.5061/dryad.t041bf0
- 摘要：
- due to fuel characteristics of invasive annual grasses. Fire reduces the abundance and cover of native vegetation in desert ecosystems. In this study
Data from: Male-bias in distributions of additive genetic, residual, and phenotypic variances of shared traits
- 负责人：
- DOI：
- doi:10.5061/dryad.43j02
- 摘要：
- r, the magnitude of the difference in sex-specific additive genetic variances may also fuel sexual dimorphism. To explore the correlation bet
Data from: Evolution at two time frames: polymorphisms from an ancient singular divergence event fuel contemporary parallel evolution
- 负责人：
- 关键词：
- Sympatric divergence;parallel evolution;Pogonus chalceus;standing genetic variation;Ground beetle
- DOI：
- doi:10.5061/dryad.77r93d5
- 摘要：
- When environments change, populations may adapt surprisingly fast, repeatedly and even at microgeographic scales. There is increasing evidence that such cases of rapid parallel evolution are fueled by standing genetic variation, but the source of this genetic variation remains poorly understood. In the saltmarsh beetle Pogonus chalceus, short-winged ‘tidal’ and long-winged ‘seasonal’ ecotypes have diverged in response to contrasting hydrological regimes and can be repeatedly found along the Atlantic European coast. By analyzing genomic variation across the beetles’ distribution, we reveal that alleles selected in the tidal ecotype are spread across the genome and evolved during a singular and, likely, geographically isolated divergence event, within the last 190 Kya. Due to subsequent admixture, the ancient and differentially selected alleles are currently polymorphic in most populations across its range, which could potentially allow for the fast evolution of one ecotype from a small number of random individuals, as low as 5 to 15, from a population of the other ecotype. Our results suggest that cases of fast parallel ecological divergence can be the result of evolution at two different time frames: divergence in the past, followed by repeated selection on the same divergently evolved alleles after admixture. These findings highlight the importance of an ancient and, likely, allopatric divergence event for driving the rate and direction of contemporary fast evolution under gene flow. This mechanism is potentially driven by periods of geographic isolation imposed by large-scale environmental changes such as glacial cycles.
Data from: Terrestrial contributions to Afrotropical aquatic food webs: the Congo River case
- 负责人：
- DOI：
- doi:10.5061/dryad.3n4gt77
- 摘要：
- 1. Understanding the degree to which aquatic and terrestrial primary production fuel tropical aquatic food webs remains poorly understood
Data supporting the article from Corticosterone and timing of migratory departure in a songbird
- 负责人：
- DOI：
- doi:10.6084/m9.figshare.4498922.v1
- 摘要：
- Bird migration entails replenishing fuel stores at stopover sites. There, individuals make daily decisions whether to resume migration, and must als
Africa RISING project: Local agro-ecological knowledge as a basis for sustainable intensification of tree- crop- livestock systems in the Ethiopian highlands: Sinana Woreda, Oromo Region
- 负责人：
- Cronin, Martha;;World Agroforestry Centre;;Consultative Group On International Agricultural Research;;Bangor University;;International Livestock Research Insitute;;International Food Policy Research Institute;;United States Agency For International Development;;Feed The Future;;International Institute For Tropical Agriculture
- 关键词：
- DOI：
- doi:10.7910/dvn/25286
- 摘要：
- change · To determine temporal variation in availability of provisioning services (income, fuel, livestock feed, crops, labour.)
Ghana Focus Group Discussions Data
- 负责人：
- Bellon, Mauricio;;Vodouhe, Raymond;;Bioversity-Dataverse
- 关键词：
- DOI：
- doi:10.7910/dvn/dkas4z
- 摘要：
- s in order to generate: (a) an inventory (list) of all useful plant, and animal species used by local communities for human food, animal feed, medicine, fuel
Data from: Oxidative damage to lipids is rapidly reduced during migratory stopovers
- 负责人：
- DOI：
- doi:10.5061/dryad.x95x69pdz
- 摘要：
- to the amounts of food consumed or of fuel accumulated. Our findings support the hypothesis that stopovers serve reduction of oxidative damage, warranting
): Density of alkyl esters and its mixtures. A comparison and improvement of predictive models. Fuel, 103, 232-238
- 负责人：
- 关键词：
- DOI：
- doi:10.1594/pangaea.783283
- 摘要：
- Biodiesel density is a key parameter in biodiesel simulations and process development. In this work we selected, evaluated and improved two density models, one theoretical (Rackett-Soave) and one empirical (Lapuerta's method) for methanol based biodiesels (FAME) and ethanol based biodiesel (FAEE). For this purpose, biodiesel was produced from vegetable oils (sunflower, rapeseed, soybean, olive, safflower and other two commercial mixtures of vegetable oils) and animal fats (edible and crude pork fat and beef tallow) using both methanol and ethanol for the transesterification reactions, and blended to get 21 FAME and 21 FAEE, reporting their density and detailed composition. Bibliographic data have also been used. The Rackett-Soave method has been improved by the use of a new acentric factor correlation, whereas the parameters of the empirical one are improved by considering a bigger density data bank. Results show that the evaluated models could be used to estimate the biodiesel density with a good grade of accuracy but the performed modifications improve the accuracy of the models: ARD (%) for FAME; 0.33, and FAEE; 0.26, both calculated with the modification of Rackett-Soave method and ARD (%) for FAME; 0.40 calculated with the modification of the Lapuerta's method).
Africa RISING Project: Local agro-ecological knowledge as a basis for sustainable intensification of tree- crop- livestock systems in the Ethiopian highlands: Endamahoni Woreda, Tigray Region
- 负责人：
- 关键词：
- DOI：
- doi:10.34725/dvn/25288
- 摘要：
- of provisioning services (income, fuel, livestock feed, crops, labour.)
