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Статті в журналах з теми "Riverine flow conditions"
Tang, Jian, Xinan Yin, ChunXue Yu, and Zhifeng Yang. "Suitable Environmental Flow Release Criteria for Both Human and Riverine Ecosystems: Accounting for the Uncertainty of Flows." Mathematical Problems in Engineering 2012 (2012): 1–14. http://dx.doi.org/10.1155/2012/704989.
Повний текст джерелаKumar, Rakesh, Prabhakar Sharma, Anurag Verma, Prakash Kumar Jha, Prabhakar Singh, Pankaj Kumar Gupta, Ravish Chandra, and P. V. Vara Prasad. "Effect of Physical Characteristics and Hydrodynamic Conditions on Transport and Deposition of Microplastics in Riverine Ecosystem." Water 13, no. 19 (September 30, 2021): 2710. http://dx.doi.org/10.3390/w13192710.
Повний текст джерелаHumphries, Paul, Alison King, Nicole McCasker, R. Keller Kopf, Rick Stoffels, Brenton Zampatti, and Amina Price. "Riverscape recruitment: a conceptual synthesis of drivers of fish recruitment in rivers." Canadian Journal of Fisheries and Aquatic Sciences 77, no. 2 (February 2020): 213–25. http://dx.doi.org/10.1139/cjfas-2018-0138.
Повний текст джерелаRICHARDSON, ADAM, and PAUL HUMPHRIES. "Reproductive traits of riverine shrimps may explain the impact of altered flow conditions." Freshwater Biology 55, no. 10 (June 9, 2010): 2011–22. http://dx.doi.org/10.1111/j.1365-2427.2010.02457.x.
Повний текст джерелаHorne, Avril C., Rory Nathan, N. LeRoy Poff, Nick R. Bond, J. Angus Webb, Jun Wang, and Andrew John. "Modeling Flow-Ecology Responses in the Anthropocene: Challenges for Sustainable Riverine Management." BioScience 69, no. 10 (September 4, 2019): 789–99. http://dx.doi.org/10.1093/biosci/biz087.
Повний текст джерелаRen, Kang, Shengzhi Huang, Qiang Huang, Hao Wang, and Guoyong Leng. "Environmental Flow Assessment Considering Inter- and Intra-Annual Streamflow Variability under the Context of Non-Stationarity." Water 10, no. 12 (November 26, 2018): 1737. http://dx.doi.org/10.3390/w10121737.
Повний текст джерелаRosa, Eric, Claude Hillaire-Marcel, Bassam Ghaleb, and Terry A. Dick. "Environmental and seasonal controls on riverine dissolved uranium in the Hudson, James, and Ungava bays region, Canada." Canadian Journal of Earth Sciences 49, no. 6 (June 2012): 758–71. http://dx.doi.org/10.1139/e2012-025.
Повний текст джерелаTownsend, S. A., M. Przybylska, and M. Miloshis. "Phytoplankton composition and constraints to biomass in the middle reaches of an Australian tropical river during base flow." Marine and Freshwater Research 63, no. 1 (2012): 48. http://dx.doi.org/10.1071/mf11111.
Повний текст джерелаLi, Junhua, Mingwu Zhang, Enhui Jiang, Li Pan, Aoxue Wang, Yafei Wang, and Shengqi Jian. "Influence of Floodplain Flooding on Channel Siltation Adjustment under the Effect of Vegetation on a Meandering Riverine Beach." Water 13, no. 10 (May 18, 2021): 1402. http://dx.doi.org/10.3390/w13101402.
Повний текст джерелаBruce, L. C., P. L. M. Cook, I. Teakle, and M. R. Hipsey. "Hydrodynamic controls on oxygen dynamics in a riverine salt wedge estuary, the Yarra River estuary, Australia." Hydrology and Earth System Sciences 18, no. 4 (April 10, 2014): 1397–411. http://dx.doi.org/10.5194/hess-18-1397-2014.
Повний текст джерелаДисертації з теми "Riverine flow conditions"
(9725532), Acquire Admin. "Phytoplankton ecology in the Fitzroy River at Rockhampton, Central Queensland, Australia." Thesis, 1999. https://figshare.com/articles/thesis/Phytoplankton_ecology_in_the_Fitzroy_River_at_Rockhampton_Central_Queensland_Australia/21397656.
Повний текст джерелаThe seasonal periodicity of hydrology, physical and chemical water quality parameters and phytoplanktonic assemblages was studied at two sites in a large tropical Australian riverine impoundment. This study, the first in the lower Fitzroy River at Rockhampton, occurred between August 1990 and November 1993. It covered extremes in riverine flow conditions including major flooding and drought.
The annual flow regime was characterized by major flows in the "wet" season (summer and autumn) and greatly reduced or no flow in the "dry" season of winter, spring and sometimes early summer. Consequently, the thermal regime at both of the study sites was divided into two phases. The first was a phase of water column heating in the late winter to early summer. Features of this heating phase were long term stratification with progressive epilimnetic deepening, high pH, regular occurrence of epilimnetic oxygen supersaturation and decreased or undetectable levels of oxidized nitrogen in the surface layer. Hypolimnetic anoxia was recorded late in this phase. The second, between substantial wet season inflows and late winter was characterized by nutrient rich inflows and water column cooling and mixing.
Distinct interannual differences occurred in the volume, source and timing of inflows and subsequent water chemistry. In 1991, conductivity, water clarity, filterable reactive phosphorus (FRP) and pH increased markedly following major flooding from northern tributaries, while oxidized nitrogen decreased. This was in marked contrast to the drier years of 1992 and 1993 where turbidity and oxidized nitrogen were higher during the initial post-flood period and conductivity and FRP were lower. Extremes of mostly abiogenic turbidity (range 1.6 to 159 NTU) were a feature of the light climate. Ratios of euphotic depth/mixing depth below 0.3 occurred in early 1992 and 1993.
Steep gradients in the physical and chemical environment were paralleled by variations in the phytoplankton. Algal biomass (as chlorophyll a) at Site 1, midstream opposite the water intake for the city of Rockhampton, ranged from 1.5 to 56.6 ug L-1. The vertical water column distribution of chlorophyll was variable with assemblages normally dominated by phytoflagellates and various species of cyanoprokaryotes. There was also higher relative abundance of chlorophyll a (reflecting increasing dominance of cyanoprokaryotes) in the latter half of the year and at the lower end of light availability. The specific vertical water column positioning with respect to light and temperature is shown for assemblages dominated by the genera Anabaena, Aphanizomenon and Cylindrospermopsis.
The most striking aspect of the phytoplankton was the long term dominance of cyanoprokaryotes and the species richness (particularly that of cyanoprokaryotes) when compared with the dearth of information to date on other tropical rivers. Seasonal successions were varied. Regularly occurring assemblages were cyanoprokaryotes (Oscillatoriales), euglenophytes or non-flagellated chlorophytes during flows followed by flagellated chlorophytes and then cyanoprokaryotes (Nostocales) during the dry season. Genera present indicated highly eutrophic conditions. Hierarchical agglomerative clustering of phytoplankton data and comparison with a principal components analysis of corresponding environmental data were used to demonstrate the linkage between steep environmental gradients and variation in the phytoplankton assemblage. The specific environmental conditions associated with the success of various species were also analysed and presented. Using the above information, a two-part model was proposed which predicts the most likely genera of phytoplankton with respect to multidimensional environmental gradients. This model covers a wide gamut of conditions varying from highly variable lotic to lentic environments.
As Cylindrospermopsis raciborskii was considered a most important species in relation to the quality of the water supply for Rockhampton, the physical, chemical and biotic conditions prior to and during a bloom of this species are described. A number of possible grazers of C. raciborskii were identified with a view to future biomanipulation. One of these, the large ciliate, Paramecium cf. caudatum was found to be an effective grazer of toxic straight C. raciborskii in the laboratory.
This study is unique in that it analyses the impact of episodic events (eg. major flooding) on the subsequent phytoplankton in the lower Fitzroy River. The model relating phytoplankton to multidimensional environmental gradients provides great information for use in management, particularly in relation to the prediction of toxic algal blooms.
Wu, Chen-Huan, and 吳承寰. "Application of habitat suitability curve and genetic programming to assess the habitat preference of riverine fish: The classification of flow condition." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/61354048669335600221.
Повний текст джерела國立臺灣大學
生物環境系統工程學研究所
100
River ecological engineering is the engineering method to renovate river approaching to nature in recent years. Establishing good simulation model before executing not only provides a direction for river ecological engineering, but improves the benefits of river management. During simulating river habitat, Habitat Suitability Analysis is one of the most important processes. Habitat suitability index (HSI) builds the relationship between target species and environmental factors of habitat and physical habitat model simulate the river section and calculate weighted usable area (WUA). Combining both of them become a crucial analysis tool to river ecosystem. The previous study in river habitat simulation mostly aims at the fish preference of environmental factors of habitat to build individual model. However, in order to consider different fish ecological demand in various flow conditions, for example, riffle with high oxygen is full of food sources, pool is suitable to be a shelter, it needs diverse standard simulation model for describing fish activities to approach reality. The study area is Datuan Stream located in Tamsui District, New Taipei City and the target species is monk goby (Sicyopterus japonicus). Fish presence probabilities for each velocity and water depth establish HSI. There are three methods: First, establish suitability index (SI) by each factor separately, and then multiple all SIs together to obtain a composite HSI, which called “traditional model”. Second, Search for optimal function in factors by genetic programming (GP), and obtain HSI, which called “modified model”. Third, divide into four flow conditions by velocity 0.32 (m/s) and water depth 0.29(m), and obtain united HSI, which called “classified model”. Finally, simulate river flow and calculate the spatial distribution of WUA, and then compare the result of three models. The result reveals that the correlation between frequency of monk goby presence and frequency of flow condition is up to 0.96. Therefore, Category II HSI which is the most common method can not reflect favorite environment of fish in reality. In addition, when it comes to the calibration and validation of model, the root mean square error (RMSE) of modified model is better than traditional model by 0.0718, 0.1001, and 0.1215, 0.1289. While taking the relationship between variables into consideration by GP, it has a better predictive effect. On the other hand, the RMSE of classified model is worse than modified model by 0.1127, 0.1316. All in all, the confidence and accuracy of modified model is greater than other two models. In the end, the result of calculating WUA shows that classified model could avoid underestimation or homogeneity, which may occur in other two models. While researching in different activities of fish (ex: spawning, preying), we expect classified model to be practical and valuable in the future.
Частини книг з теми "Riverine flow conditions"
Kashefipour, S., B. Lin, and R. Falconer. "Impact of riverine and CSO inputs on coastal water quality under different environmental conditions." In River Flow 2004, 1211–16. CRC Press, 2004. http://dx.doi.org/10.1201/b16998-157.
Повний текст джерела"Managing Centrarchid Fisheries in Rivers and Streams." In Managing Centrarchid Fisheries in Rivers and Streams, edited by Travis R. Ingram, Steven M. Sammons, Adam J. Kaeser, Rachel A. Katz, and Sean C. Sterrett. American Fisheries Society, 2019. http://dx.doi.org/10.47886/9781934874523.ch11.
Повний текст джерела"Balancing Fisheries Management and Water Uses for Impounded River Systems." In Balancing Fisheries Management and Water Uses for Impounded River Systems, edited by Christopher J. Goudreau, Richard W. Christie, and D. Hugh Barwick. American Fisheries Society, 2008. http://dx.doi.org/10.47886/9781934874066.ch5.
Повний текст джерела"Freshwater, Fish and the Future: Proceedings of the Global Cross-Sectoral Conference." In Freshwater, Fish and the Future: Proceedings of the Global Cross-Sectoral Conference, edited by John D. Koehn. American Fisheries Society, 2016. http://dx.doi.org/10.47886/9789251092637.ch10.
Повний текст джерела"Freshwater, Fish and the Future: Proceedings of the Global Cross-Sectoral Conference." In Freshwater, Fish and the Future: Proceedings of the Global Cross-Sectoral Conference, edited by John D. Koehn. American Fisheries Society, 2016. http://dx.doi.org/10.47886/9789251092637.ch10.
Повний текст джерела"Community Ecology of Stream Fishes: Concepts, Approaches, and Techniques." In Community Ecology of Stream Fishes: Concepts, Approaches, and Techniques, edited by Alexander S. Flecker, Peter B. McIntyre, Jonathan W. Moore, Jill T. Anderson, Brad W. Taylor, and Robert O. Hall. American Fisheries Society, 2010. http://dx.doi.org/10.47886/9781934874141.ch28.
Повний текст джерелаТези доповідей конференцій з теми "Riverine flow conditions"
Braun, M. J., R. C. Hendricks, and V. Canacci. "Flow Visualization in a Simulated Brush Seal." In ASME 1990 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1990. http://dx.doi.org/10.1115/90-gt-217.
Повний текст джерелаCargnelutti, Marcos F., Stefan P. C. Belfroid, Wouter Schiferli, and Marlies van Osch. "Multiphase Fluid Structure Interaction in Bends and T-Joints." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25696.
Повний текст джерела