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You searched for: Subject "temporal variation" Remove constraint Subject: "temporal variation"
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1. Dramatic decline of observed atmospheric CO2 and CH4 during the COVID-19 lockdown over the Yangtze River Delta of China

Author:
Miao Liang; Yong Zhang; Qianli Ma; Dajiang Yu; Xiaojian Chen; Jason Blake Cohen
Source:
Journal of environmental sciences (China) 2023 v.124 pp. 712-722
ISSN:
1001-0742
Subject:
temporal variation,   etc   ; COVID-19 infection; carbon dioxide; greenhouse gases; river deltas; terrestrial ecosystems; China; Yangtze River;     Show all 8 Subjects
Abstract:
... The temporal variation of greenhouse gas concentrations in China during the COVID-19 lockdown in China is analyzed in this work using high resolution measurements of near surface △CO₂, △CH₄ and △CO concentrations above the background conditions at Lin'an station (LAN), a regional background station in the Yangtze River Delta region. During the pre-lockdown observational period (IOP-1), both △CO₂ a ...
DOI:
10.1016/j.jes.2021.09.034

2. Comparing the Ability of Burned Area Products to Detect Crop Residue Burning in China

Author:
Sumei Zhang; Hongmei Zhao; Zehao Wu; Longda Tan
Source:
Remote Sensing 2022 v.14 no.3 pp. -
ISSN:
2072-4292
Subject:
temporal variation,   etc   ; crop residues; cropland; China;     Show all 4 Subjects
Abstract:
... Burning crop residues is a common way to remove them during the final stages of crop ripening in China. To conduct research effectively, it is critical to reliably and quantitatively estimate the extent and location of a burned area. Here, we investigated three publicly available burned area products—MCD64A1, FireCCI 5.1, and the Copernicus Burnt Area—and evaluated their relative performance at es ...
DOI:
10.3390/rs14030693

3. Mimicking CA3 Temporal Dynamics Controls Limbic Ictogenesis

Author:
Davide Caron; Ángel Canal-Alonso; Gabriella Panuccio
Source:
Biology 2022 v.11 no.3 pp. -
ISSN:
2079-7737
Subject:
temporal variation,   etc   ; electrical treatment; epilepsy; hippocampus;     Show all 4 Subjects
Abstract:
... Mesial temporal lobe epilepsy (MTLE) is the most common partial complex epilepsy in adults and the most unresponsive to medications. Electrical deep brain stimulation (DBS) of the hippocampus has proved effective in controlling seizures in epileptic rodents and in drug-refractory MTLE patients. However, current DBS paradigms implement arbitrary fixed-frequency or patterned stimuli, disregarding th ...
DOI:
10.3390/biology11030371

4. Multi-actor approaches and engagement strategies to promote the adoption of best groundwater management practices

Author:
Maura Calliera; Ettore Capri
Source:
Current opinion in environmental science & health 2022 v.27 pp. 100351
ISSN:
2468-5844
Subject:
temporal variation,   etc   ; information exchange; society; water management;     Show all 4 Subjects
Abstract:
... Approaching to groundwater management means of controlling multiple pollutants from multiple sources, with high spatial and temporal variability. This complex socio-ecological issue cannot be solved only by scientific knowledge developed in controlled research settings. The challenge lies on different forms of analysis that consider the interdependencies and uncertainties of the real world, adding ...
DOI:
10.1016/j.coesh.2022.100351

5. Temporal change of 236U/238U and 235U/238U isotopic ratios in atmospheric deposition in Tokyo and Akita from 1963 to 1979

Author:
Takeshi Ohno; Naoki Sato; Junko Shikimori; Yuta Ijichi; Yusuke Fukami; Yasuhito Igarashi
Source:
Science of the total environment 2022 v.810 pp. 151292
ISSN:
0048-9697
Subject:
temporal variation,   etc   ; Japan; atmospheric deposition; environment; uranium;     Show all 5 Subjects
Abstract:
... We examine the temporal changes of ²³⁶U/²³⁸U and ²³⁵U/²³⁸U in atmospheric deposition from samples collected in Tokyo and Akita from 1963 to 1979 and elucidate the spatial distribution and historical changes of the anthropogenic sources of uranium in Japan. The ²³⁶U/²³⁸U ratio of atmospheric deposition in Tokyo peaked in 1963 and again during the 1970s, while the corresponding ²³⁵U/²³⁸U ratios of a ...
DOI:
10.1016/j.scitotenv.2021.151292

6. Citizen science in cities: an overview of projects focused on urban Australia

Author:
Erin Roger; Alice Motion
Source:
Urban ecosystems 2022 v.25 no.3 pp. 741-752
ISSN:
1083-8155
Subject:
temporal variation,   etc   ; biodiversity; citizen science; urban areas; Australia;     Show all 5 Subjects
Abstract:
... Citizen science offers a unique opportunity to connect urban-dwellers with the often hidden natural world upon their doorsteps and to contribute to authentic research that increases knowledge of urban ecology and biodiversity. With the majority of Australia’s population residing in large cities, this diverse potential pool of participants in science creates a significant opportunity to increase th ...
DOI:
10.1007/s11252-021-01187-3

7. On the Evolution of Different Types of Green Water Events—Part II: Applicability of a Convolution Approach

Author:
Jassiel V. H. Fontes; Edgar Mendoza; Rodolfo Silva; Irving D. Hernández; Marcos A. González-Olvera; Lizeth Torres
Source:
Water 2022 v.14 no.4 pp. -
ISSN:
2073-4441
Subject:
temporal variation,   etc   ; analytical methods; hydraulic flumes; models; water;     Show all 5 Subjects
Abstract:
... Recent research related to the evolution of different types of green water events, generated in wave flume experiments, has shown that some events, such as plunging-dam-break (PDB) and hammer-fist (HF) types, can present multiple-valued water surface elevations during formation at the bow of the structure. However, the applicability of analytical models to capture the evolution (i.e., the spatio-t ...
DOI:
10.3390/w14040510

8. A learning-based approach towards the data-driven predictive control of combined wastewater networks – An experimental study

Author:
Krisztian Mark Balla; Jan Dimon Bendtsen; Christian Schou; Carsten Skovmose Kallesøe; Carlos Ocampo-Martinez
Source:
Water research 2022 pp. 118782
ISSN:
0043-1354
Subject:
temporal variation,   etc   ; rain; research; stormwater; topology; wastewater; water utilities;     Show all 7 Subjects
Abstract:
... Smart control in water systems aims to reduce the cost of infrastructure expansion by better utilizing the available capacity through real-time control. The recent availability of sensors and advanced data processing is expected to transform the view of water system operators, increasing the need for deploying a new generation of data-driven control solutions. To that end, this paper proposes a da ...
DOI:
10.1016/j.watres.2022.118782

9. Dynamics and potential synchronization of regional precipitation concentration and drought-flood abrupt alternation under the influence of reservoir climate

Author:
Hao Cui; Shanhu Jiang; Liliang Ren; Weihua Xiao; Fei Yuan; Menghao Wang; Linyong Wei
Source:
Journal of hydrology 2022 v.42 pp. 101147
ISSN:
2214-5818
Subject:
temporal variation,   etc   ; climate; entropy; head; hydrology; tail; weather; China;     Show all 8 Subjects
Abstract:
... Three Gorges Reservoir area, the largest reservoir area in China The frequency and intensity of extreme weather events increase with climate warming, and the local climate effects in the large reservoir area may also change the local precipitation structure. Therefore, based on the precipitation sequence data in the Three Gorges Reservoir (TGR) area from 1959 to 2019, the proposed multi-time-scale ...
DOI:
10.1016/j.ejrh.2022.101147

10. Predators mitigate the destabilising effects of heatwaves on multitrophic stream communities

Author:
Samuel R. P.‐J. Ross; Jorge García Molinos; Atsushi Okuda; Jackson Johnstone; Keisuke Atsumi; Ryo Futamura; Maureen A. Williams; Yuichi Matsuoka; Jiro Uchida; Shoji Kumikawa; Hiroshi Sugiyama; Osamu Kishida; Ian Donohue
Source:
Global change biology 2022 v.28 no.2 pp. 403-416
ISSN:
1354-1013
Subject:
temporal variation,   etc   ; algae; biomass; climate change; extinction; macroinvertebrates; streams;     Show all 7 Subjects
Abstract:
... Amidst the global extinction crisis, climate change will expose ecosystems to more frequent and intense extreme climatic events, such as heatwaves. Yet, whether predator species loss—a prevailing characteristic of the extinction crisis—will exacerbate the ecological consequences of extreme climatic events remains largely unknown. Here, we show that the loss of predator species can interact with he ...
DOI:
10.1111/gcb.15956

11. Spatio‐temporal discretization uncertainty of distributed hydrological models

Author:
Siavash P. Markhali; Annie Poulin; Marie‐Amélie Boucher
Source:
Hydrological processes 2022 v.36 no.6 pp. e14635
ISSN:
0885-6087
Subject:
temporal variation,   etc   ; simulation models; stream flow; uncertainty; watersheds; Quebec;     Show all 6 Subjects
Abstract:
... Quantifying the uncertainty linked to the degree to which the spatio‐temporal variability of the catchment descriptors (CDs), and consequently calibration parameters (CPs), represented in the distributed hydrology models and its impacts on the simulation of flooding events is the main objective of this paper. Here, we introduce a methodology based on ensemble approach principles to characterize th ...
DOI:
10.1002/hyp.14635

12. The impact of individual variation on abrupt collapses in mutualistic networks

Author:
Gaurav Baruah
Source:
Ecology letters 2022 v.25 no.1 pp. 26-37
ISSN:
1461-023X
Subject:
temporal variation,   etc   ; dynamic models; ecological competition; ecosystems; exhibitions; topology;     Show all 6 Subjects
Abstract:
... Individual variation is central to species involved in complex interactions with others in an ecological system. Such ecological systems could exhibit tipping points in response to changes in the environment, consequently leading to abrupt transitions to alternative, often less desirable states. However, little is known about how individual trait variation could influence the timing and occurrence ...
DOI:
10.1111/ele.13895

13. Using null models and species traits to optimize phytoplankton monitoring: An application across oceans and ecosystems

Author:
Leonilde Roselli; Stanislao Bevilacqua; Antonio Terlizzi
Source:
Ecological indicators 2022 v.138 pp. 108827
ISSN:
1470-160X
Subject:
temporal variation,   etc   ; corals; cost effectiveness; global change; phytoplankton; taxonomy;     Show all 6 Subjects
Abstract:
... Phytoplankton assemblages are privileged descriptors of the ecological status of marine ecosystems regularly included in routine monitoring programmes. The high spatial and temporal variability of phytoplankton and the intrinsic difficulties of species identifications, however, combine in making reiterate assessments of this component of marine biota particularly demanding. Coarse levels of taxono ...
DOI:
10.1016/j.ecolind.2022.108827

14. Analysis of the heterogeneity of urban expansion landscape patterns and driving factors based on a combined Multi-Order Adjacency Index and Geodetector model

Author:
Jing Liu; Quanli Xu; Junhua Yi; Xin Huang
Source:
Ecological indicators 2022 v.136 pp. 108655
ISSN:
1470-160X
Subject:
temporal variation,   etc   ; landscapes; models; quantitative analysis; spatial variation; urbanization; China;     Show all 7 Subjects
Abstract:
... Under conditions of rapid urbanization, quantitative measurement of the expansion characteristics of urban landscapes and evaluation of their spatial and temporal differentiation properties is an important scientific problem. The Multi-order Adjacency Index (MAI) is an effective indicator of the quantitative characteristics of urban landscape expansion; however, it cannot directly reflect the spat ...
DOI:
10.1016/j.ecolind.2022.108655

15. Community assembly within ponds: the roles of space, time, and environmental gradients

Author:
Carmen G. Montaña; Friedrich W. Keppeler; Clay P. Laughrey; Christopher M. Schalk
Source:
Aquatic ecology 2022 v.56 no.1 pp. 123-142
ISSN:
1386-2588
Subject:
temporal variation,   etc   ; community structure; microhabitats; oxygen; species diversity; temperature; vegetation;     Show all 7 Subjects
Abstract:
... Environmental and spatial–temporal processes are proposed as important mechanisms regulating permanent pond communities, but comprehensive research of these factors at fine scales (i.e. patches or microhabitats) is still lacking. Here, we investigated environmental, spatial, and temporal variables influencing community structure and diversity (α, β, γ) in pond microhabitats over one annual cycle ( ...
DOI:
10.1007/s10452-021-09902-0

16. Concerted action of extracellular and cytoplasmic esterase and urethane-cleaving activities during Impranil biodegradation by Alicycliphilus denitrificans BQ1

Author:
Jacqueline Fuentes-Jaime; Martín Vargas-Suárez; M. Javier Cruz-Gómez; Herminia Loza-Tavera
Source:
Biodegradation 2022 v.33 no.4 pp. 389-406
ISSN:
0923-9820
Subject:
temporal variation,   etc   ; biodegradation; esterases; polyesters; polyurethanes; proteinases; substrate specificity; urethane;     Show all 8 Subjects
Abstract:
... The concerted action of commercial esterases, proteases and amidases has been demonstrated to be relevant in polyurethane (PU) degradation by in vitro experiments. However, the spatial and temporal dynamics of these activities during PU biodegradation by PU-degrading bacteria have not been addressed. Here, we examined the capability of Alicycliphilus denitrificans BQ1 to biodegrade the polyester ( ...
DOI:
10.1007/s10532-022-09989-8

17. Diagnosing structural deficiencies of a hydrological model by time-varying parameters

Author:
Liting Zhou; Pan Liu; Ziling Gui; Xiaojing Zhang; Weibo Liu; Lei Cheng; Jun Xia
Source:
Journal of hydrology 2022 v.605 pp. 127305
ISSN:
0022-1694
Subject:
temporal variation,   etc   ; basins; hydrologic models; model validation; snow; soil water;     Show all 6 Subjects
Abstract:
... Time-varying parameters, which are often expressed in functional forms, have been widely used to improve hydrological modeling. Here, we assume that the time-varying parameters may be caused by deficiencies of the model structures. To justify this point, the SIMHYD model was selected as the base model, and the ensemble Kalman filter (EnKF) was used to identify the temporal variation of parameters. ...
DOI:
10.1016/j.jhydrol.2021.127305

18. Joint control of manufacturing and onsite microgrid system via novel neural-network integrated reinforcement learning algorithms

Author:
Jiaojiao Yang; Zeyi Sun; Wenqing Hu; Louis Steinmeister
Source:
Applied energy 2022 v.315 pp. 118982
ISSN:
0306-2619
Subject:
temporal variation,   etc   ; algorithms; decision making; energy; issues and policy; models;     Show all 6 Subjects
Abstract:
... Microgrid is a promising technology of distributed energy supply system, which consists of storage devices, generation capacities including renewable sources, and controllable loads. It has been widely investigated and applied for residential and commercial end-use customers as well as critical facilities. In this paper, we propose a joint state-based dynamic control model on microgrids and manufa ...
DOI:
10.1016/j.apenergy.2022.118982

19. Removal and reconstruction: Multi-period price effects on nearby housing from urban village redevelopment

Author:
Ying Peng; Chuanhao Tian
Source:
Land use policy 2022 v.113 pp. 105877
ISSN:
0264-8377
Subject:
temporal variation,   etc   ; land policy; models; prices; public investment; villages; China;     Show all 7 Subjects
Abstract:
... The removal and reconstruction of urban villages can improve the residential environment in the vicinity and promote the willingness of buyers to pay. A detailed investigation of the price effects on nearby housing generated by urban village redevelopment helps to capture the added value of public investment. Previous studies often ignore the temporal variation of the price effects. Furthermore, t ...
DOI:
10.1016/j.landusepol.2021.105877

20. Study of the dynamics of grass yield within the agricultural landscape based on long-term monitoring

Author:
D. A. Ivanov; O. V. Karaseva; M. V. Rublyuk; O. N. Antsiferova
Source:
Agrarnaâ nauka Evro-Severo-Vostoka 2022 v.23 no.2 pp. 221-229
ISSN:
2500-1396
Subject:
temporal variation,   etc   ; agricultural landscapes; energy; grasses; hay; summer; sward; temperature;     Show all 8 Subjects
Abstract:
... Yield monitoring of a five-component grass stand in a breeding field within a moraine hill was carried out in 2003- 2018 in order to find patterns of its dynamics in the agrolandscape. The grass was used in the conditions of the Tver region without fertilizers in a single-cut mode in a field crossing all microlandscape positions of the hill (transcct) and divided into 30 plots. Annual data on prod ...
DOI:
10.30766/2072-9081.2022.23.2.221-229