dataService

您的位置: 首页 > 数据服务 > 数据列表页

筛选

共检索到128条 ,权限内显示50条;

Data from: Chemical element distributions within conodont elements and their functional implications
负责人:
Katvala, Erik Cowing
关键词:
Teeth Composition Functional Morphology Electron Microprobe Analysis
DOI:
doi:10.5061/dryad.121d03jc
摘要:
. Patterns in sodium and sulfur concentrations indicate oral to aboral differentiation within conodont elements. These chemical element patterns support
Data from: Fe-S cluster biosynthesis controls uptake of aminoglycosides in a ROS-less death pathway
负责人:
关键词:
DOI:
doi:10.5061/dryad.3062c
摘要:
-sulfur (Fe-S) clusters and generating Fenton chemistry. We find that the ROS response is dispensable upon treatment with bactericidal antibiotics. Furtherm
Data from: Beta-diversity on deep-sea wood falls reflects gradients in energy availability
负责人:
关键词:
beta diversity;wood fall;Deep sea;Recruitment;Xylophaga;Polychaeta;Assembly;Tanaidacea;Gastropoda;community;energy
DOI:
doi:10.5061/dryad.8j013
摘要:
- and sulfide-obligate species form on these wood falls. However, little is known regarding patterns and drivers of variation in the composition of wood fall
Data from: Allocation to male vs. female floral function varies by currency and responds differentially to density and moisture stress
负责人:
关键词:
reproductive allocation;Brassica rapa;tradeoffs;Quantitative variation;QTL
DOI:
doi:10.5061/dryad.5m6p3
摘要:
organs (stamens) decreased under drought. Phosphorus allocation decreased by half in pistils under drought, while stamen phosphorus was unaffected
Data from: Contrasting responses of phosphatase kinetic parameters to nitrogen and phosphorus additions in forest soils
负责人:
关键词:
kinetic parameters;Temperate Forest;nitrogen;phosphatase;subtropical forest;catalytic efficiency;phosphorus
DOI:
doi:10.5061/dryad.8cq1s
摘要:
1. Global changes include increasing nitrogen (N) and phosphorus (P) deposition, which affect microbial nutrient demand and biogeochemical cycles
Data from: Maize-nutrient response information applied across Sub-Saharan Africa
负责人:
Wortmann, Charles S.
关键词:
phosphorus nitrogen potassium zinc sulfur food crops tropic sub-sahara
DOI:
doi:10.5061/dryad.tt6h5h1
摘要:
The profit potential for a given investment in fertilizer use can be estimated using representative crop nutrient response functions. Where response data is scarce, determination of representative response functions can be strengthened by using results from homologous crop growing conditions. Maize (Zea mays L.) nutrient response functions were selected from the Optimization of Fertilizer Recommendations in Africa (OFRA) database of 5500 georeferenced response functions determined from field research conducted in Sub-Saharan Africa. Three methods for defining inference domains for selection of response functions were compared. Use of the OFRA Inference Tool (OFRA-IT; http://agronomy.unl.edu/OFRA) resulted in greater specificity of maize N, P, and K response functions with higher R2 values indicating superiority compared with using the Harvest Choice Agroecological Zones (HC-AEZ) and the recommendation domains of the Global Yield Gap Atlas project (GYGA-RD). The OFRA-IT queries three soil properties in addition to climate-related properties while the latter two options use climate properties only. The OFRA-IT was generally insensitive to changes in criteria ranges of 20–25% used in queries suggesting value in using wider criteria ranges compared with the default for information scarce crop nutrient response functions.
Data from: Rising CO2 accelerates phosphorus and molybdenum limitation of N2-fixation in young tropical trees
负责人:
关键词:
Phosphorous;Tropical nitrogen fixation;CO2 fertilization;Tropical carbon sink;global change ecology;Inga marginata;nutrient limitation;Molybdenum;Ormosia macrocalyx;Handroanthus guayacan
DOI:
doi:10.5061/dryad.07nd0hc
摘要:
of rising atmospheric CO2. However, we do not know whether increased CO2 acts to exacerbate nutrient limitation on the fixation process itself. We experimentally test
Data from: Nitrogen transformations differentially affect nutrient-limited primary production in lakes of varying trophic state
负责人:
关键词:
eutrophication;nitrogen;Primary productivity;biogeochemistry;Ecosystem stoichiometry;phosphorus
DOI:
doi:10.5061/dryad.707d540
摘要:
The concept of lakes “evolving” phosphorus (P) limitation has persisted in limnology despite limited direct evidence. Here, we developed a simple
Data from: Phylogenetic distribution of a male pheromone that may exploit a nonsexual preference in lampreys
负责人:
Johnson, Nicholas S.
关键词:
Receiver bias Signal evolution Chemical communication
DOI:
doi:10.5061/dryad.vs213
摘要:
. Previous studies indicate that male signaling with the mating pheromone 3-keto petromyzonol sulfate (3kPZS) may exploit a nonsexual attraction to juvenile
Stream chemistry for core sites in Gwynns Falls: concentration of Cl, NO3, PO4, total N and P, SO4, dissolved oxygen, E. coli, plus temperature, pH, clarity and turbidity
负责人:
关键词:
DOI:
doi:10.6073/pasta/de140c21d863b12baf7fabf27e41574d
摘要:
, total phosphorus, chloride and sulfate, turbidity, fecal coliforms, temperature, dissolved oxygen and pH. Cations, dissolved organic carbon and nitrogen and metals

意 见 箱

匿名:登录

个人用户登录

找回密码

第三方账号登录

忘记密码

个人用户注册

必须为有效邮箱
6~16位数字与字母组合
6~16位数字与字母组合
请输入正确的手机号码

信息补充