156 results match your criteria rainfall partitioning

Soil capacity of intercepting different rainfalls across subtropical plantation: Distinct effects of plant and soil properties.

Sci Total Environ 2021 Aug 16;784:147120. Epub 2021 Apr 16.

University of Calgary, Calgary T2N1N4, Canada.

Forest management practices play an important role in soil water conservation. However, the soil water-holding capacity and associated drivers under different management practices remain uncertain, especially when the precipitation varies substantially at the regional scale. Here, we used hydrogen stable isotope to explore the contribution of rainfall to soil water (CRSW) under light, moderate and heavy precipitation in Pinus massoniana plantations with multiple management practices (pure stand, mixed stand, understory removal, light-intensity thinning and high-intensity thinning) in subtropical China. Read More

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Global patterns and drivers of rainfall partitioning by trees and shrubs.

Glob Chang Biol 2021 Apr 16. Epub 2021 Apr 16.

CREAF, Cerdanyola del Vallès, Spain.

Spatiotemporal redistribution of incident rainfall in vegetated ecosystems results from the partitioning by plants into intercepted, stemflow, and throughfall fractions. However, variation in patterns and drivers of rainfall partitioning across global biomes remains poorly understood, which limited the ability of climate models to improve the predictions of biome hydrological cycle under global climate change scenario. Here, we synthesized and analyzed the partitioning of incident rainfall into interception, stemflow, and throughfall by trees and shrubs at the global scale using 2430 observations from 236 independent publications. Read More

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Geographic partitioning or environmental selection: What governs the global distribution of bacterial communities inhabiting floral nectar?

Sci Total Environ 2020 Dec 12;749:142305. Epub 2020 Sep 12.

Department of Evolutionary and Environmental Biology, Faculty of Natural Sciences, University of Haifa, Haifa 3498838, Israel.

Floral nectar harbors microbial communities which have significant impacts on its chemistry, volatiles, nutritional contents, and attractiveness for pollinators. Yet, fundamental knowledge regarding the structure and composition of nectar-associated microbiomes remains largely unknown. Especially elusive are the environmental factors and spatial effects that shape nectar-inhabiting microbial communities. Read More

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December 2020

Explicit the urban waterlogging spatial variation and its driving factors: The stepwise cluster analysis model and hierarchical partitioning analysis approach.

Sci Total Environ 2021 Apr 16;763:143041. Epub 2020 Oct 16.

Dept. of Land, Environment, Agriculture and Forestry, University of Padova, 35020 Legnaro, PD, Italy. Electronic address:

Urban waterlogging is a hydrological cycle problem that seriously affects people's life and property. Characterizing waterlogging variation and explicit its driving factors are conducive to prevent the damage of such disasters. Conventional methods, because of the high spatial heterogeneity and the non-stationary complex mechanism of urban waterlogging, are not able to fully capture the urban waterlogging spatial variation and identify the waterlogging susceptibility areas. Read More

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Storm runoff generation in headwater catchments on the Chinese Loess Plateau after long-term vegetation rehabilitation.

Sci Total Environ 2020 Dec 2;748:141375. Epub 2020 Aug 2.

State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.

Storm runoff is important for maintaining surface water resources, while this function is significantly affected by land use and land cover changes, e.g., afforestation and reforestation. Read More

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December 2020

Magnesium in subaqueous speleothems as a potential palaeotemperature proxy.

Nat Commun 2020 10 6;11(1):5027. Epub 2020 Oct 6.

School of Earth Sciences, The University of Melbourne, Parkville, 3010, VIC, Australia.

Few palaeoclimate archives beyond the polar regions preserve continuous and datable palaeotemperature proxy time series over multiple glacial-interglacial cycles. This hampers efforts to develop a more coherent picture of global patterns of past temperatures. Here we show that Mg concentrations in a subaqueous speleothem from an Italian cave track regional sea-surface temperatures over the last 350,000 years. Read More

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October 2020

Spatial and spatio-temporal methods for mapping malaria risk: a systematic review.

BMJ Glob Health 2020 10;5(10)

Discipline of Public Health Medicine, University of KwaZulu-Natal, Durban, South Africa.

Background: Approaches in malaria risk mapping continue to advance in scope with the advent of geostatistical techniques spanning both the spatial and temporal domains. A substantive review of the merits of the methods and covariates used to map malaria risk has not been undertaken. Therefore, this review aimed to systematically retrieve, summarise methods and examine covariates that have been used for mapping malaria risk in sub-Saharan Africa (SSA). Read More

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October 2020

Skull shape of a widely distributed, endangered marsupial reveals little evidence of local adaptation between fragmented populations.

Ecol Evol 2020 Sep 18;10(18):9707-9720. Epub 2020 Aug 18.

College of Science and Engineering Flinders University Adelaide SA Australia.

The biogeographic distribution of diversity among populations of threatened mammalian species is generally investigated using population genetics. However, intraspecific phenotypic diversity is rarely assessed beyond taxonomy-focused linear measurements or qualitative descriptions. Here, we use a technique widely used in the evolutionary sciences-geometric morphometrics-to characterize shape diversity in the skull of an endangered marsupial, the northern quoll, across its 5,000 km distribution range along Northern Australia. Read More

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September 2020

Morphological composition and fiber partitioning along regrowth in elephant grass CT115 intended for ethanol production.

Sci Rep 2020 09 15;10(1):15118. Epub 2020 Sep 15.

Colegio de Postgraduados Campus Veracruz, Km 88.5 Carretera Xalapa-Veracruz, CP 91700, Veracruz, Mexico.

Leaf share, plant age and growth season are often overlooked as modifiers of the biomass quality in energy crops. The current work studied the effect of the given factors on the biomass yield and the biomass quality in Elephant grass CT115, intended for bioethanol production, in Veracruz, Mexico. Two seasons per year, 5 months each, were tracked on a 2-weeks basis. Read More

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September 2020

Different Post-Sowing Nitrogen Management Approaches Required to Improve Nitrogen and Water Use Efficiency of Canola and Mustard.

Front Plant Sci 2020 21;11:1111. Epub 2020 Jul 21.

School of Agriculture Food and Wine, The University of Adelaide, Waite Campus, Adelaide, SA, Australia.

Strategic use of nitrogen (N) may improve N use efficiency, but there is limited information on the influence of N supply at crucial growth stages on N accumulation, water use, and water use efficiency of canola and mustard. In this study, we hypothesize that genetic variation among canola and mustard can alter the response of timing and rate of post-sowing N application at targeted phenological growth stages by improving N and water use and their efficiencies. Field experiments were conducted in South Australia during two growing seasons with contrasting water availabilities. Read More

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Competitor densities, habitat, and weather: effects on interspecific interactions between wild deer species.

Integr Zool 2020 Jul 12. Epub 2020 Jul 12.

Research Unit of Behavioural Ecology, Ethology and Wildlife Management, Department of Life Sciences, University of Siena, Siena, Italy.

There is a growing interest on the potential interplay between weather, habitat, and interspecific competition on population dynamics of wild herbivores. Favorable environmental conditions may buffer the negative effects of competition; conversely, competition may be expected to be stronger under harsh environmental conditions. We investigated relationships between competitor abundance, weather, and habitat cover on density and local distribution of a medium-sized herbivore, the roe deer Capreolus capreolus, as well as its spatial overlap with fallow deer Dama dama in a Mediterranean protected area. Read More

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Disentangling elevation, annual flooding regime and salinity as hydrochemical determinants of halophyte distribution in non-tidal saltmarsh.

Ann Bot 2020 07;126(2):277-288

Área de Ecología/RNM 311 Ecología y Medio Ambiente, Departamento de Ciencias Integradas, Facultad de Ciencias Experimentales, Universidad de Huelva, Campus de Excelencia Internacional del Mar CEIMAR y Campus de Excelencia Internacional CEICAMBIO, Huelva, Spain.

Background And Aims: Hydrological disconnection, especially in a Mediterranean climate, creates coastal saltmarshes with an annual cycle of flooding that are unlike tidally inundated systems. Winter rainfall produces long, continuous hydroperiods, alternating with continuous exposure caused by evaporation in warm, rain-free summers. We aimed to distinguish the effects of elevation, hydroperiod and salinity on annual and perennial halophytes in such a system. Read More

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Consequences of drought severity for tropical live oak (Quercus oleoides) in Mesoamerica.

Ecol Appl 2020 09 21;30(6):e02135. Epub 2020 May 21.

Department of Ecology and Evolution, Cornell University, Ithaca, New York, 14853, USA.

In two Costa Rican and three Honduran sites that vary in rainfall and soil properties, we used natural isotopes, a soil water balance model, and broad-scale climate-based drought indices to study shifts in water use with ontogeny from seedlings to mature tropical live oak (Quercus oleoides) trees. Water use patterns help to explain persistence of this broadly distributed species in Mesoamerica and to evaluate likely threats of ongoing climate changes. At the end of the dry season, soil δ O profiles can be described by one-phase exponential decay curves. Read More

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September 2020

Sorption and desorption of seven steroidal synthetic progestins in five agricultural soil-water systems.

Ecotoxicol Environ Saf 2020 Jun 6;196:110586. Epub 2020 Apr 6.

College of Natural Resources and Environment, Joint Institute for Environment & Education, South China Agricultural University, Guangzhou, 510642, PR China. Electronic address:

Manure fertilization and wastewater irrigation can introduce the biologically potent synthetic progestins into agricultural soils, causing endocrine disruption in organisms of nearby surface waters. Therefore, this study investigated the sorption and desorption potential of etonogestrel, medroxyprogesterone, gestodene, norgestrel, cyproterone acetate, levonorgestrel, and dienogest in five agricultural soil-water systems. Sorption data were well-described by the linear sorption model. Read More

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Urban vacant lands impart hydrological benefits across city landscapes.

Nat Commun 2020 03 26;11(1):1563. Epub 2020 Mar 26.

Office of Research and Development, U.S. Environmental Protection Agency, 26 Martin Luther King Dr W, Cincinnati, OH, 45268, USA.

Cities evolve through phases of construction, demolition, vacancy, and redevelopment, each impacting water movement at the land surface by altering soil hydrologic properties, land cover, and topography. Currently unknown is whether the variable physical and vegetative characteristics associated with vacant parcels and introduced by demolition may absorb rainfall and thereby diminish stormwater runoff. To investigate this, we evaluate how vacant lots modulate citywide hydrologic partitioning by synthesizing a novel field dataset across 500+ parcels in Buffalo, New York, USA. Read More

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Hydro-climate and biogeochemical processes control watershed organic carbon inflows: Development of an in-stream organic carbon module coupled with a process-based hydrologic model.

Sci Total Environ 2020 May 13;718:137281. Epub 2020 Feb 13.

Department of Earth and Atmospheric Sciences, University of Alberta, 1-26 Earth Sciences Building, Edmonton, AB T6G 2E3, Canada. Electronic address:

Dissolved organic carbon (DOC) in surface waters directly influences the speciation, transport, and fate of heavy metals, as well as the partitioning of organic contaminants. However, the lack of process-based watershed-scale models for simulating carbon cycling and transport has limited the effective watershed management to control organic carbon fluxes to source waters and throughout the river systems. Here, a process-based in-stream organic carbon (OC) module was developed, coupled with the physically process-based Soil and Water Assessment Tool (SWAT), and linked with its existing soil carbon module to simulate dynamics of both particulate organic carbon (POC) and DOC. Read More

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Comprehensive insights into the occurrence, distribution, risk assessment and indicator screening of antibiotics in a large drinking reservoir system.

Sci Total Environ 2020 May 1;716:137060. Epub 2020 Feb 1.

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Institute of Pollution Control and Ecological Security, 800 Dongchuan Road, Shanghai 200240, China. Electronic address:

Drinking water reservoir is threatened globally due to anthropogenic contamination and thus in need of more attention. Here, we comprehensively investigated the occurrence, distribution and risk assessment of representative antibiotics in a large drinking water reservoir (Fengshuba Reservoir, China). The total concentrations of antibiotics in the water phase, porewater phase, sediment phase and soil phase (drawdown area) were in the ranges of 195-569 ng/L, 47. Read More

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Soil structure is an important omission in Earth System Models.

Nat Commun 2020 Jan 27;11(1):522. Epub 2020 Jan 27.

Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida, USA.

Most soil hydraulic information used in Earth System Models (ESMs) is derived from pedo-transfer functions that use easy-to-measure soil attributes to estimate hydraulic parameters. This parameterization relies heavily on soil texture, but overlooks the critical role of soil structure originated by soil biophysical activity. Soil structure omission is pervasive also in sampling and measurement methods used to train pedotransfer functions. Read More

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January 2020

Analyzing snapshot diversity patterns with the Neutral Theory can show functional groups' effects on community assembly.

Ecology 2020 04 11;101(4):e02977. Epub 2020 Mar 11.

University Grenoble-Alpes, LECA, 2233 Rue de la Piscine, Grenoble, 38041, France.

A central question of community ecology is to understand how the interplay between processes of the Neutral Theory (e.g., immigration and ecological drift) and niche-based processes (e. Read More

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Altered water uptake patterns of Populus deltoides in mixed riparian forest stands.

Sci Total Environ 2020 Mar 6;706:135956. Epub 2019 Dec 6.

Key Laboratory of Forest Ecology and Environment of State Forestry and Grassland Administration, Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China.

Plant water uptake plays an important role in regulating ecosystem water balance and its productivity. However, previous studies regarding plant water uptake were primarily conducted in wet areas under seasonal drought conditions, with a limited understanding of the proportion and drivers of plant water uptake under humid conditions. Actually, climate change and variations in global precipitation patterns could simultaneously trigger seasonal drought and flooding. Read More

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Surface-Atmosphere Coupling Scale, the Fate of Water, and Ecophysiological Function in a Brazilian Forest.

J Adv Model Earth Syst 2019 Aug 5;11(8):2523-2546. Epub 2019 Aug 5.

Atmospheric Science Department Colorado State University Fort Collins CO USA.

Tropical South America plays a central role in global climate. Bowen ratio teleconnects to circulation and precipitation processes far afield, and the global CO growth rate is strongly influenced by carbon cycle processes in South America. However, quantification of basin-wide seasonality of flux partitioning between latent and sensible heat, the response to anomalies around climatic norms, and understanding of the processes and mechanisms that control the carbon cycle remains elusive. Read More

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Karst recharge-discharge semi distributed model to assess spatial variability of flows.

Sci Total Environ 2020 Feb 5;703:134368. Epub 2019 Oct 5.

Avignon Université, UMR EMMAH, 301 rue Baruch de Spinoza, 84916 Avignon, France.

Aquifer recharge assessment is a key factor for sustainable groundwater resource management. Although main factors of the spatial and temporal variability of recharge are known, taking them into account in a distributed or semi-distributed model is still a challenging task. This difficulty is increased in karst environments. Read More

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February 2020

How afforestation affects the water cycle in drylands: A process-based comparative analysis.

Glob Chang Biol 2020 02 15;26(2):944-959. Epub 2019 Nov 15.

Eastern Forest Environmental Threat Assessment Center, US Department of Agriculture Forest Service, Research Triangle, NC, USA.

The world's largest afforestation programs implemented by China made a great contribution to the global "greening up." These programs have received worldwide attention due to its contribution toward achieving the United Nations Sustainable Development Goals. However, emerging studies have suggested that these campaigns, when not properly implemented, resulted in unintended ecological and water security concerns at the regional scale. Read More

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February 2020

Alteration in isotopic composition of gross rainfall as it is being partitioned into throughfall and stemflow by xerophytic shrub canopies within water-limited arid desert ecosystems.

Sci Total Environ 2019 Nov 19;692:631-639. Epub 2019 Jul 19.

Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, 320 Donggang West Road, Lanzhou 730000, China.

Isotopic composition of gross rainfall has been extensively used as a conservative tracer to track water movement and other hydrological processes in vegetated ecosystems. Recent studies from forest ecosystems, however, demonstrated that vegetation canopies can alter the isotopic composition of rainwater during rainfall partitioning into throughfall and stemflow, likely leading to errors and biases in aforementioned studies. No known studies, to date, had investigated this topic in shrub-dominated arid and semi-arid ecosystems where water is typically the driving factor in ecological, hydrological and biogeochemical processes. Read More

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November 2019

Decadal-scale shifts in soil hydraulic properties as induced by altered precipitation.

Sci Adv 2019 09 11;5(9):eaau6635. Epub 2019 Sep 11.

Department of Biology and Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO 80523, USA.

Soil hydraulic properties influence the partitioning of rainfall into infiltration versus runoff, determine plant-available water, and constrain evapotranspiration. Although rapid changes in soil hydraulic properties from direct human disturbance are well documented, climate change may also induce such shifts on decadal time scales. Using soils from a 25-year precipitation manipulation experiment, we found that a 35% increase in water inputs substantially reduced infiltration rates and modestly increased water retention. Read More

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September 2019

Impacts of typhoon-induced heavy rainfalls and resultant freshwater runoff on the partitioning of organic carbon oxidation and nutrient dynamics in the intertidal sediments of the Han River estuary, Yellow Sea.

Sci Total Environ 2019 Nov 4;691:858-867. Epub 2019 Jul 4.

Department of Marine Sciences and Convergent Technology, Hanyang University, 55 Hanyangdaehak-ro, Ansan, Gyeonggi-do 15588, South Korea. Electronic address:

Occurrence of typhoons accompanied by heavy precipitation has increased for the past 40 years in northeast Asia. To elucidate the impact of three consecutive typhoon-induced heavy rainfall events and resultant freshwater runoff on the partitioning of organic carbon (C) oxidation and nutrient dynamics, we investigated the geochemical constituents, the rate of anaerobic C oxidation, sulfate reduction (SR), iron reduction (FeR) and P speciation in the intertidal mud flat of the Han River estuary, Yellow Sea. C oxidation by SR and FeR and their metabolic products (∑CO, NH, HS, Fe) decreased significantly (P < 0. Read More

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November 2019

Rainfall variability maintains grass-forb species coexistence.

Ecol Lett 2019 Oct 12;22(10):1658-1667. Epub 2019 Jul 12.

Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder, CO, 80309, USA.

Environmental variability can structure species coexistence by enhancing niche partitioning. Modern coexistence theory highlights two fluctuation-dependent temporal coexistence mechanisms -the storage effect and relative nonlinearity - but empirical tests are rare. Here, we experimentally test if environmental fluctuations enhance coexistence in a California annual grassland. Read More

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October 2019

Incorporating a non-reactive heavy metal simulation module into SWAT model and its application in the Athabasca oil sands region.

Environ Sci Pollut Res Int 2019 Jul 21;26(20):20879-20892. Epub 2019 May 21.

Athabasca River Basin Research Institute (ARBRI), Athabasca University, Alberta, Canada.

Heavy metal contaminations in an aquatic environment is a serious issue since the exposure to toxic metals can cause a variety of public health problems. A watershed-scale model is a useful tool for predicting and assessing heavy metal fate and transport in both terrestrial and aquatic environments. In this study, we developed a simulation module for non-reactive heavy metals and incorporated it into the widely used Soil Water Assessment Tool (SWAT) model. Read More

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Soilborne Inoculum Density and Environmental Parameters Influence the Development of Pythium Stunt Caused by in Head Lettuce Crops.

Plant Dis 2019 Jul 22;103(7):1685-1692. Epub 2019 May 22.

1 Department of Plant Science, McGill University, Sainte-Anne-de-Bellevue, Quebec, H9X 3V9, Canada.

In Quebec muck soils, Pythium stunt ( Matta) is responsible for important yield losses in head lettuce crops each year, which can reach up to 50% in certain cases. Despite the significance of the disease, factors influencing its development remain poorly documented, and no disease risk indicators are available, which makes the development of management strategies difficult. Hence, growers systematically use chemical fungicides throughout the growing season to reduce crop losses. Read More

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Mediterranean grassland soil C-N compound turnover is dependent on rainfall and depth, and is mediated by genomically divergent microorganisms.

Nat Microbiol 2019 08 20;4(8):1356-1367. Epub 2019 May 20.

Department of Earth and Planetary Science, University of California, Berkeley, Berkeley, CA, USA.

Soil microbial activity drives the carbon and nitrogen cycles and is an important determinant of atmospheric trace gas turnover, yet most soils are dominated by microorganisms with unknown metabolic capacities. Even Acidobacteria, among the most abundant bacteria in soil, remain poorly characterized, and functions across groups such as Verrucomicrobia, Gemmatimonadetes, Chloroflexi and Rokubacteria are understudied. Here, we have resolved 60 metagenomic and 20 proteomic data sets from a Mediterranean grassland soil ecosystem and recovered 793 near-complete microbial genomes from 18 phyla, representing around one-third of all microorganisms detected. Read More

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