scholarly journals Cryptic lineage divergence in marine environments: genetic differentiation at multiple spatial and temporal scales in the widespread intertidal goby Gobiosoma bosc

2017 ◽  
Vol 7 (14) ◽  
pp. 5514-5523 ◽  
Author(s):  
Borja Milá ◽  
James L. Van Tassell ◽  
Jatziri A. Calderón ◽  
Lukas Rüber ◽  
Rafael Zardoya
Keyword(s):  
Genetic Differentiation ◽  
Marine Environments ◽  
Temporal Scales ◽  
Spatial And Temporal Scales ◽  
Cryptic Lineage ◽  
Gobiosoma Bosc ◽  
Lineage Divergence

scholarly journals Spatial and temporal scales of exposure and sensitivity drive mortality risk patterns across life stages

Ecosphere ◽  
2021 ◽  
Vol 12 (6) ◽  
Author(s):  
Lauren L. M. Pandori ◽  
Cascade J. B. Sorte
Keyword(s):  
Mortality Risk ◽  
Life Stages ◽  
Temporal Scales ◽  
Spatial And Temporal Scales

Soil salinization monitoring method evolution at various spatial and temporal scales in arid context: a review

2021 ◽  
Vol 14 (4) ◽  
Author(s):  
Zarai Besma ◽  
Walter Christian ◽  
Michot Didier ◽  
Montoroi Jean Pierre ◽  
Hachicha Mohamed
Keyword(s):  
Soil Salinization ◽  
Temporal Scales ◽  
Monitoring Method ◽  
Spatial And Temporal Scales

Challenges in urban flood management: travelling across spatial and temporal scales

2008 ◽  
Vol 1 (2) ◽  
pp. 81-88 ◽  
Author(s):  
C. Zevenbergen ◽  
W. Veerbeek ◽  
B. Gersonius ◽  
S. Van Herk
Keyword(s):  
Flood Management ◽  
Temporal Scales ◽  
Urban Flood ◽  
Spatial And Temporal Scales

Characteristics of the east Mediterranean dust variability on small spatial and temporal scales

2015 ◽  
Vol 120 ◽  
pp. 51-60 ◽  
Author(s):  
Yuval ◽  
Meytar Sorek–Hamer ◽  
Amnon Stupp ◽  
Pinhas Alpert ◽  
David M. Broday
Keyword(s):  
East Mediterranean ◽  
Temporal Scales ◽  
Spatial And Temporal Scales

Preface: European lagoons—need for further comparison across spatial and temporal scales

Hydrobiologia ◽  
2008 ◽  
Vol 611 (1) ◽  
pp. 1-4 ◽  
Author(s):  
A. Razinkovas ◽  
Z. Gasiūnaitė ◽  
P. Viaroli ◽  
J. M. Zaldívar
Keyword(s):  
Temporal Scales ◽  
Spatial And Temporal Scales

scholarly journals Impacts of beaver dams on hydrologic and temperature regimes in a mountain stream

2015 ◽  
Vol 19 (8) ◽  
pp. 3541-3556 ◽  
Author(s):  
M. Majerova ◽  
B. T. Neilson ◽  
N. M. Schmadel ◽  
J. M. Wheaton ◽  
C. J. Snow
Keyword(s):  
Overland Flow ◽  
Stream Temperature ◽  
Mountain Stream ◽  
Complex Flow ◽  
Temporal Scales ◽  
Spatial And Temporal Scales ◽  
Beaver Dam ◽  
Temperature Regimes ◽  
Continuous Stream ◽  
Beaver Dams

Abstract. Beaver dams affect hydrologic processes, channel complexity, and stream temperature in part by inundating riparian areas, influencing groundwater–surface water interactions, and changing fluvial processes within stream systems. We explored the impacts of beaver dams on hydrologic and temperature regimes at different spatial and temporal scales within a mountain stream in northern Utah over a 3-year period spanning pre- and post-beaver colonization. Using continuous stream discharge, stream temperature, synoptic tracer experiments, and groundwater elevation measurements, we documented pre-beaver conditions in the first year of the study. In the second year, we captured the initial effects of three beaver dams, while the third year included the effects of ten dams. After beaver colonization, reach-scale (~ 750 m in length) discharge observations showed a shift from slightly losing to gaining. However, at the smaller sub-reach scale (ranging from 56 to 185 m in length), the discharge gains and losses increased in variability due to more complex flow pathways with beaver dams forcing overland flow, increasing surface and subsurface storage, and increasing groundwater elevations. At the reach scale, temperatures were found to increase by 0.38 °C (3.8 %), which in part is explained by a 230 % increase in mean reach residence time. At the smallest, beaver dam scale (including upstream ponded area, beaver dam structure, and immediate downstream section), there were notable increases in the thermal heterogeneity where warmer and cooler niches were created. Through the quantification of hydrologic and thermal changes at different spatial and temporal scales, we document increased variability during post-beaver colonization and highlight the need to understand the impacts of beaver dams on stream ecosystems and their potential role in stream restoration.

scholarly journals Statistical analysis of rainfall intermittency at small spatial and temporal scales

2011 ◽  
Vol 38 (18) ◽  
pp. n/a-n/a ◽  
Author(s):  
M. Schleiss ◽  
J. Jaffrain ◽  
A. Berne
Keyword(s):  
Statistical Analysis ◽  
Temporal Scales ◽  
Spatial And Temporal Scales

scholarly journals An open source database for the synthesis of soil radiocarbon data: ISRaD version 1.0

2019 ◽  
Author(s):  
Corey R. Lawrence ◽  
Jeffery Beem-Miller ◽  
Alison M. Hoyt ◽  
Grey Monroe ◽  
Carlos A. Sierra ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Open Source ◽  
Soil Surface ◽  
Original Data ◽  
R Package ◽  
Direct Access ◽  
Temporal Scales ◽  
Spatial And Temporal Scales ◽  
Starting Point ◽  
Radiocarbon Data

Abstract. Radiocarbon is a critical constraint on our estimates of the timescales of soil carbon cycling that can aid in identifying mechanisms of carbon stabilization and destabilization, and improve forecast of soil carbon response to management or environmental change. Despite the wealth of soil radiocarbon data that has been reported over the past 75 years, the ability to apply these data to global scale questions is limited by our capacity to synthesis and compare measurements generated using a variety of methods. Here we describe the International Soil Radiocarbon Database (ISRaD, soilradiocarbon.org), an open-source archive of soils data that include data from bulk soils, or whole-soils; distinct soil carbon pools isolated in the laboratory by a variety of soil fractionation methods; samples of soil gas or water collected interstitially from within an intact soil profile; CO2 gas isolated from laboratory soil incubations; and fluxes collected in situ from a soil surface. The core of ISRaD is a relational database structured around individual datasets (entries) and organized hierarchically to report soil radiocarbon data, measured at different physical and temporal scales, as well as other soil or environmental properties that may also be measured at one or more levels of the hierarchy that may assist with interpretation and context. Anyone may contribute their own data to the database by entering it into the ISRaD template and subjecting it to quality assurance protocols. ISRaD can be accessed through: (1) a web-based interface, (2) an R package (ISRaD), or (3) direct access to code and data through the GitHub repository, which hosts both code and data. The design of ISRaD allows for participants to become directly involved in the management, design, and application of ISRaD data. The synthesized dataset is available in two forms: the original data as reported by the authors of the datasets; and an enhanced dataset that includes ancillary geospatial data calculated within the ISRaD framework. ISRaD also provides data management tools in the ISRaD-R package that provide a starting point for data analysis. This community-based dataset and platform for soil radiocarbon and a wide array of additional soils data information in soils where data are easy to contribute and the community is invited to add tools and ideas for improvement. As a whole, ISRaD provides resources that can aid our evaluation of soil dynamics and improve our understanding of controls on soil carbon dynamics across a range of spatial and temporal scales. The ISRaD v1.0 dataset (Lawrence et al., 2019) is archived and freely available at https://doi.org/10.5281/zenodo.2613911.

scholarly journals Geography is more important than life history in the recent diversification of the tiger salamander complex

2021 ◽  
Vol 118 (17) ◽  
pp. e2014719118
Author(s):  
Kathryn M. Everson ◽  
Levi N. Gray ◽  
Angela G. Jones ◽  
Nicolette M. Lawrence ◽  
Mary E. Foley ◽  
...  
Keyword(s):  
Life History ◽  
Gene Flow ◽  
Genetic Differentiation ◽  
Population Genetic ◽  
Tiger Salamander ◽  
Life History Variation ◽  
Mexican Axolotl ◽  
Population Genetic Differentiation ◽  
Wide Range ◽  
Lineage Divergence

The North American tiger salamander species complex, including its best-known species, the Mexican axolotl, has long been a source of biological fascination. The complex exhibits a wide range of variation in developmental life history strategies, including populations and individuals that undergo metamorphosis; those able to forego metamorphosis and retain a larval, aquatic lifestyle (i.e., paedomorphosis); and those that do both. The evolution of a paedomorphic life history state is thought to lead to increased population genetic differentiation and ultimately reproductive isolation and speciation, but the degree to which it has shaped population- and species-level divergence is poorly understood. Using a large multilocus dataset from hundreds of samples across North America, we identified genetic clusters across the geographic range of the tiger salamander complex. These clusters often contain a mixture of paedomorphic and metamorphic taxa, indicating that geographic isolation has played a larger role in lineage divergence than paedomorphosis in this system. This conclusion is bolstered by geography-informed analyses indicating no effect of life history strategy on population genetic differentiation and by model-based population genetic analyses demonstrating gene flow between adjacent metamorphic and paedomorphic populations. This fine-scale genetic perspective on life history variation establishes a framework for understanding how plasticity, local adaptation, and gene flow contribute to lineage divergence. Many members of the tiger salamander complex are endangered, and the Mexican axolotl is an important model system in regenerative and biomedical research. Our results chart a course for more informed use of these taxa in experimental, ecological, and conservation research.

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