Accedi

Bibliografie tematiche / Mixing in lakes / Articoli di riviste

Segui questo link per vedere altri tipi di pubblicazioni sul tema: Mixing in lakes.

Articoli di riviste sul tema "Mixing in lakes"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 11 febbraio 2022

Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili

Scegli il tipo di fonte:

Vedi i top-50 articoli di riviste per l'attività di ricerca sul tema "Mixing in lakes".

Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.

Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.

Vedi gli articoli di riviste di molte aree scientifiche e compila una bibliografia corretta.

1

Li, Yunliang, Jing Yao, and Li Zhang. "Investigation into mixing in the shallow floodplain Poyang Lake (China) using hydrological, thermal and isotopic evidence." Water Science and Technology 74, no. 11 (September 17, 2016): 2582–98. http://dx.doi.org/10.2166/wst.2016.444.

Testo completo

Abstract (sommario):

Although mixing in lakes has significant environmental and ecological implications, knowledge of mixing dynamics for shallow floodplain lakes has received little attention. In this study, hydrological, thermal and isotopic investigations were undertaken to provide evidence for the mixing in the large, shallow floodplain Poyang Lake (China). Depth profiles of water velocity, water temperature and stable hydrogen and oxygen isotope compositions were measured throughout the lake, with results showing that the water velocity differences in depth profiles are generally less than ∼0.2 m/s, indicatin

Gli stili APA, Harvard, Vancouver, ISO e altri

2

Peeters, F., A. Wüest, G. Piepke, and D. M. Imboden. "Horizontal mixing in lakes." Journal of Geophysical Research: Oceans 101, no. C8 (August 15, 1996): 18361–75. http://dx.doi.org/10.1029/96jc01145.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

3

Bengtsson, Lars. "Mixing in ice-covered lakes." Hydrobiologia 322, no. 1-3 (April 1996): 91–97. http://dx.doi.org/10.1007/bf00031811.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

4

Dembowska, Ewa. "Cyanobacterial blooms in shallow lakes of the Iławskie Lake District." Limnological Review 11, no. 2 (January 1, 2011): 69–79. http://dx.doi.org/10.2478/v10194-011-0028-y.

Testo completo

Abstract (sommario):

Cyanobacterial blooms in shallow lakes of the Iławskie Lake DistrictThe dominance of blue-green algae observed in many lakes is related to a high trophic level. Shallow eutrophic lakes are particularly often abundant in blue-green algae. The research on phytoplankton, the results of which are presented in this paper, was carried out between 2002 and 2005 in six lakes. These lakes differed considerably in their size and management methods applied in the catchment (drainage) area. A few types of water blooms were distinguished, which is related to the catchment area management, the intensity of

Gli stili APA, Harvard, Vancouver, ISO e altri

5

Davies‐Colley, Robert J. "Mixing depths in New Zealand lakes." New Zealand Journal of Marine and Freshwater Research 22, no. 4 (December 1988): 517–28. http://dx.doi.org/10.1080/00288330.1988.9516322.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

6

Bergmann, Martin A., and Harold E. Welch. "Spring Meltwater Mixing in Small Arctic Lakes." Canadian Journal of Fisheries and Aquatic Sciences 42, no. 11 (November 1, 1985): 1789–98. http://dx.doi.org/10.1139/f85-224.

Testo completo

Abstract (sommario):

Meltwater mixing in small arctic lakes at Saqvaqjuac (63°68′N, 90°40′W) was studied in 1980 and 1981 to evaluate the applicability of theoretical lake water renewal times to the modeling of ice-covered lakes. Two 370-GBq tritium additions were made to 7.09-ha P&N Lake. One was mixed with the unfrozen water at the time of maximum lake-ice thickness (May 1980) and the other was mixed with the lake immediately after freezing (October 1980). Dye experiments were also performed at four lakes to define the spatial and temporal distribution of the inflow and icemelt layers. Results from the triti

Gli stili APA, Harvard, Vancouver, ISO e altri

7

Helbling, E. W., P. Carrillo, J. M. Medina-Sanchez, C. Durán, G. Herrera, M. Villar-Argaiz, and V. E. Villafañe. "Interactive effects of vertical mixing, nutrients and ultraviolet radiation: in situ photosynthetic responses of phytoplankton from high mountain lakes of Southern Europe." Biogeosciences Discussions 9, no. 7 (July 31, 2012): 9791–827. http://dx.doi.org/10.5194/bgd-9-9791-2012.

Testo completo

Abstract (sommario):

Abstract. Global change, together with human activities had resulted in increasing amounts of organic material (including nutrients) received by water bodies. This input further attenuates the penetration of solar radiation leading to the view that opaque lakes are more "protected" from solar ultraviolet radiation (UVR) than clear ones. Vertical mixing, however, complicates this view as cells are exposed to fluctuating radiation regimes, which effects have in general been neglected. Even more, the combined impacts of mixing, together with those of UVR and nutrients input are virtually unknown.

Gli stili APA, Harvard, Vancouver, ISO e altri

8

Helbling, E. W., P. Carrillo, J. M. Medina-Sánchez, C. Durán, G. Herrera, M. Villar-Argaiz, and V. E. Villafañe. "Interactive effects of vertical mixing, nutrients and ultraviolet radiation: in situ photosynthetic responses of phytoplankton from high mountain lakes in Southern Europe." Biogeosciences 10, no. 2 (February 14, 2013): 1037–50. http://dx.doi.org/10.5194/bg-10-1037-2013.

Testo completo

Abstract (sommario):

Abstract. Global change, together with human activities, has resulted in increasing amounts of organic material (including nutrients) that water bodies receive. This input further attenuates the penetration of solar radiation, leading to the view that opaque lakes are more "protected" from solar ultraviolet radiation (UVR) than clear ones. Vertical mixing, however, complicates this view as cells are exposed to fluctuating radiation regimes, for which the effects have, in general, been neglected. Furthermore, the combined impacts of mixing, together with those of UVR and nutrient inputs are vir

Gli stili APA, Harvard, Vancouver, ISO e altri

9

Shatwell, Tom, Wim Thiery, and Georgiy Kirillin. "Future projections of temperature and mixing regime of European temperate lakes." Hydrology and Earth System Sciences 23, no. 3 (March 18, 2019): 1533–51. http://dx.doi.org/10.5194/hess-23-1533-2019.

Testo completo

Abstract (sommario):

Abstract. The physical response of lakes to climate warming is regionally variable and highly dependent on individual lake characteristics, making generalizations about their development difficult. To qualify the role of individual lake characteristics in their response to regionally homogeneous warming, we simulated temperature, ice cover, and mixing in four intensively studied German lakes of varying morphology and mixing regime with a one-dimensional lake model. We forced the model with an ensemble of 12 climate projections (RCP4.5) up to 2100. The lakes were projected to warm at 0.10–0.11

Gli stili APA, Harvard, Vancouver, ISO e altri

10

Bowling, LC. "Heat contents, thermal stabilities and Birgean wind work in Dystrophic Tasmanian Lakes and Reservoirs." Marine and Freshwater Research 41, no. 3 (1990): 429. http://dx.doi.org/10.1071/mf9900429.

Testo completo

Abstract (sommario):

Values of whole-lake standard energy parameters (heat content, thermal stability and Birge's work of the wind) for ten dystrophic standing waters from western Tasmania were lower than expected for lakes of their depth and area. Although controlled principally by morphometric factors, the degree of shelter from wind and the extent of each lake's dystrophy also had considerable effects. These factors allowed only surface waters to contribute to the annual heat exchange cycle, thereby reducing the magnitude of each lake's heat budgets and influencing stability and wind work values. The lakes show

Gli stili APA, Harvard, Vancouver, ISO e altri

11

Hongve, Dag. "Seasonal Mixing and Genesis of Endogenic Meromixis in Small Lakes in Southeast Norway." Hydrology Research 33, no. 2-3 (April 1, 2002): 189–206. http://dx.doi.org/10.2166/nh.2002.0022.

Testo completo

Abstract (sommario):

The inland region of Southeast Norway contains many lakes with endogenic meromixis. A synoptic study of seasonal mixing was conducted in 27 oligo- and mesotrophic lakes with surface area 0.0013 – 7.4 km2 and water colour 2-146 Hazen units. The scope was to identify properties of morphometric, optical and chemical nature that lead to development of endogenic meromixis. The summer mixing depths were found to depend on lake area and water colour. Small lakes (&lt; 0.3 km2) were incompletely aerated during the spring circulation and had hypolimnetic temperatures near the temperature of maximum

Gli stili APA, Harvard, Vancouver, ISO e altri

12

McGuire, Shawn, and David J. Currie. "Factors Related to the Variation in Mixing Depth among Meromictic Lakes." Canadian Journal of Fisheries and Aquatic Sciences 50, no. 6 (June 1, 1993): 1338–42. http://dx.doi.org/10.1139/f93-152.

Testo completo

Abstract (sommario):

Although the factors that influence the mixing depth of holomictic lakes have been well investigated, meromictic lakes, which never mix completely, have received little attention in this regard. The purpose of the present study was to determine if the geographic variation in mixing depth of the mixolimnion is related to the same factors as is the epilimnion depth. Data on the lake morphometry, elevation, latitude, salinity in the mixo- and monimolimnia, and the depths of the epi- and mixolimnia were obtained for 56 meromictic lakes worldwide. The depth of the mixolimnion was most closely relat

Gli stili APA, Harvard, Vancouver, ISO e altri

13

Scully, Norman M., and F. Vincent Warwick. "Hydrogen peroxide: a natural tracer of stratification and mixing processes in subarctic lakes." Archiv für Hydrobiologie 139, no. 1 (April 15, 1997): 1–15. http://dx.doi.org/10.1127/archiv-hydrobiol/139/1997/1.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

14

Bowling, LC, and K. Salonen. "Heat uptake and resistance to mixing in small humic forest lakes in Southern Finland." Marine and Freshwater Research 41, no. 6 (1990): 747. http://dx.doi.org/10.1071/mf9900747.

Testo completo

Abstract (sommario):

The annual heat budgets and maximum thermal stabilities achieved by small Finnish forest lakes are considerable for lakes of their size. Heat uptake is rapid during the brief period of vernal circulation, with the latent heat of fusion of ice contributing substantially to this. Heating then slows, with maximum heat contents and thermal stabilities occurring around early August. Absorption of solar radiation by the dystrophic waters, effective shelter from wind-induced turbulence, and considerable relative depths all combine to prevent mixing of heat much below the surface 2 m of most study lak

Gli stili APA, Harvard, Vancouver, ISO e altri

15

Sługocki, Łukasz, and Robert Czerniawski. "Trophic state (TSISD) and mixing type significantly influence pelagic zooplankton biodiversity in temperate lakes (NW Poland)." PeerJ 6 (October 5, 2018): e5731. http://dx.doi.org/10.7717/peerj.5731.

Testo completo

Abstract (sommario):

BackgroundLake depth and the consequent mixing regime and thermal structure have profound effects on ecosystem functioning, because depth strongly affects the availability of nutrients, light, and oxygen. All these conditions influence patterns of zooplankton diversity. Zooplankton are a key component of the aquatic environment and are essential to maintaining natural processes in freshwater ecosystems. However, zooplankton biodiversity can be different regard to depth, mixing type and trophic state. Therefore, the aim of this study was to examine how depth and mixing regime affect zooplankton

Gli stili APA, Harvard, Vancouver, ISO e altri

16

Cortés, Alicia, and Sally MacIntyre. "Mixing processes in small arctic lakes during spring." Limnology and Oceanography 65, no. 2 (August 21, 2019): 260–88. http://dx.doi.org/10.1002/lno.11296.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

17

Spigel, Robert H., and Jörg Imberger. "Mixing processes relevant to phytoplankton dynamics in lakes." New Zealand Journal of Marine and Freshwater Research 21, no. 3 (September 1987): 361–77. http://dx.doi.org/10.1080/00288330.1987.9516233.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

18

Andersen, Mikkel R., Theis Kragh, and Kaj Sand-Jensen. "Extreme diel dissolved oxygen and carbon cycles in shallow vegetated lakes." Proceedings of the Royal Society B: Biological Sciences 284, no. 1862 (September 13, 2017): 20171427. http://dx.doi.org/10.1098/rspb.2017.1427.

Testo completo

Abstract (sommario):

A common perception in limnology is that shallow lakes are homogeneously mixed owing to their small water volume. However, this perception is largely gained by downscaling knowledge from large lakes to their smaller counterparts. Here we show that shallow vegetated lakes (less than 0.6 m), in fact, undergo recurring daytime stratification and nocturnal mixing accompanied by extreme chemical variations during summer. Dense submerged vegetation effectively attenuates light and turbulence generating separation between warm surface waters and much colder bottom waters. Photosynthesis in surface wa

Gli stili APA, Harvard, Vancouver, ISO e altri

19

Hanna, Micheline. "Evaluation of Models Predicting Mixing Depth." Canadian Journal of Fisheries and Aquatic Sciences 47, no. 5 (May 1, 1990): 940–47. http://dx.doi.org/10.1139/f90-108.

Testo completo

Abstract (sommario):

Since mixing depth affects many aspects of lake productivity, including nutrient recycling, I evaluated the predictive power of 17 empirical models that relate mixing depth to morphometric variables to identify the best predictor. These models were tested empirically by compiling data from 123 temperate lakes of differing morphometry, geometry, and trophy. Four statistical indices of precision and bias, indicate that the model published by Shuter et al. (1983) using maximum effective length of the lake was the best published model for predicting mixing depth, although it is slightly biased. I

Gli stili APA, Harvard, Vancouver, ISO e altri

20

Veillette, Julie, Marie-Josée Martineau, Dermot Antoniades, Denis Sarrazin, and Warwick F. Vincent. "Effects of loss of perennial lake ice on mixing and phytoplankton dynamics: insights from High Arctic Canada." Annals of Glaciology 51, no. 56 (2010): 56–70. http://dx.doi.org/10.3189/172756411795931921.

Testo completo

Abstract (sommario):

AbstractPerennially ice-covered lakes are well known from Antarctica and also occur in the extreme High Arctic. Climate change has many implications for these lakes, including the thinning and disappearance of their perennial ice cover. The goal of this study was to consider the effects of transition to seasonal ice cover by way of limnological observations on a series of meromictic lakes along the northern coastline of Ellesmere Island, Nunavut, Canada. Conductivity-temperature profiles during a rare period of ice-free conditions (August 2008) in these lakes suggested effects of wind-induced

Gli stili APA, Harvard, Vancouver, ISO e altri

21

Deshpande, Bethany N., Frédéric Maps, Alex Matveev, and Warwick F. Vincent. "Oxygen depletion in subarctic peatland thaw lakes." Arctic Science 3, no. 2 (June 1, 2017): 406–28. http://dx.doi.org/10.1139/as-2016-0048.

Testo completo

Abstract (sommario):

Permafrost thawing and erosion results in the enrichment of northern lakes by soil organic matter. These allochthonous inputs favour bacterial decomposition and may cause the draw-down of dissolved oxygen to anoxic conditions that promote methanogenesis. Our objective in the present study was to determine the seasonal variations in dissolved oxygen in a set of permafrost peatland lakes in subarctic Quebec, Canada, and to relate these changes to metabolic rates, ice cover, and mixing. The lakes had high dissolved organic carbon concentrations, and their surface waters in summer had greenhouse g

Gli stili APA, Harvard, Vancouver, ISO e altri

22

Li, Yang, James R. Bence, and Travis O. Brenden. "An evaluation of alternative assessment approaches for intermixing fish populations: a case study with Great Lakes lake whitefish." ICES Journal of Marine Science 72, no. 1 (April 23, 2014): 70–81. http://dx.doi.org/10.1093/icesjms/fsu057.

Testo completo

Abstract (sommario):

Abstract We used simulation modeling to explore how three statistical catch-at-age approaches for assessing intermixed fisheries performed in terms of assessment accuracy and management performance, under differing productivity, mixing, and harvest levels. Simulations were based on intermixing lake whitefish (Coregonus clupeaformis) populations in the upper Laurentian Great Lakes of North America. We found that with intermixing, the “separate” assessment approach, which ignored intermixing and treated mixed populations as unit stocks, produced biased estimates of spawning stock biomass (SSB);

Gli stili APA, Harvard, Vancouver, ISO e altri

23

Boike, J., C. Georgi, G. Kirilin, S. Muster, K. Abramova, I. Fedorova, A. Chetverova, M. Grigoriev, N. Bornemann, and M. Langer. "Thermal processes of thermokarst lakes in the continuous permafrost zone of northern Siberia – observations and modeling (Lena River Delta, Siberia)." Biogeosciences 12, no. 20 (October 19, 2015): 5941–65. http://dx.doi.org/10.5194/bg-12-5941-2015.

Testo completo

Abstract (sommario):

Abstract. Thermokarst lakes are typical features of the northern permafrost ecosystems, and play an important role in the thermal exchange between atmosphere and subsurface. The objective of this study is to describe the main thermal processes of the lakes and to quantify the heat exchange with the underlying sediments. The thermal regimes of five lakes located within the continuous permafrost zone of northern Siberia (Lena River Delta) were investigated using hourly water temperature and water level records covering a 3-year period (2009–2012), together with bathymetric survey data. The lakes

Gli stili APA, Harvard, Vancouver, ISO e altri

24

Escobar, Jaime, David G. Buck, Mark Brenner, Jason H. Curtis, and Natalia Hoyos. "Thermal stratification, mixing, and heat budgets of Florida lakes." Fundamental and Applied Limnology / Archiv für Hydrobiologie 174, no. 4 (May 1, 2009): 283–93. http://dx.doi.org/10.1127/1863-9135/2009/0174-0283.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

25

Findikakis, Angelos N., and Adrian W. K. Law. "Wind Mixing in Temperature Simulations for Lakes and Reservoirs." Journal of Environmental Engineering 125, no. 5 (May 1999): 420–28. http://dx.doi.org/10.1061/(asce)0733-9372(1999)125:5(420).

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

26

MacIntyre, Sally, and José R. Romero. "Predicting upwelling, boundary mixing, and nutrient fluxes in lakes." SIL Proceedings, 1922-2010 27, no. 1 (April 2000): 246–50. http://dx.doi.org/10.1080/03680770.1998.11901234.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

27

Cossey, Heidi L., Mian Nabeel Anwar, Petr V. Kuznetsov, and Ania C. Ulrich. "Biofilms for Turbidity Mitigation in Oil Sands End Pit Lakes." Microorganisms 9, no. 7 (July 4, 2021): 1443. http://dx.doi.org/10.3390/microorganisms9071443.

Testo completo

Abstract (sommario):

End pit lakes (EPLs) have been proposed as a method of reclaiming oil sands fluid fine tailings (FFT), which consist primarily of process-affected water and clay- and silt-sized particles. Base Mine Lake (BML) is the first full-scale demonstration EPL and contains thick deposits of FFT capped with water. Because of the fine-grained nature of FFT, turbidity generation and mitigation in BML are issues that may be detrimental to the development of an aquatic ecosystem in the water cap. Laboratory mixing experiments were conducted to investigate the effect of mudline biofilms made up of microbial

Gli stili APA, Harvard, Vancouver, ISO e altri

28

Agbeti, Michael D., John C. Kingston, John P. Smol, and Christine Watters. "Comparison of phytoplankton succession in two lakes of different mixing regimes fig: 12 tab: 4." Fundamental and Applied Limnology 140, no. 1 (August 13, 1997): 37–69. http://dx.doi.org/10.1127/archiv-hydrobiol/140/1997/37.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

29

von Rohden, C., B. Boehrer, and J. Ilmberger. "Evidence for double diffusion in temperate meromictic lakes." Hydrology and Earth System Sciences 14, no. 4 (April 13, 2010): 667–74. http://dx.doi.org/10.5194/hess-14-667-2010.

Testo completo

Abstract (sommario):

Abstract. We present CTD-measurements from two shallow meromictic mining lakes. The lakes, which differ in size and depth, show completely different seasonal mixing patterns in their mixolimnia. However, the measurements document the occurrence of similar seasonal convective mixing in discrete layers within their monimolimnia. This mixing is induced by double diffusion and can be identified by the characteristic step-like structure of the temperature and electrical conductivity profiles. The steps develop in the upper part of the monimolimnion, when in autumn cooling mixolimnion temperatures h

Gli stili APA, Harvard, Vancouver, ISO e altri

30

Fahnenstiel, G. L., R. A. Stone, M. J. McCormick, C. L. Schelske, and S. E. Lohrenz. "Spring isothermal mixing in the Great Lakes: evidence of nutrient limitation and nutrient-light interactions in a suboptimal light environment." Canadian Journal of Fisheries and Aquatic Sciences 57, no. 9 (September 1, 2000): 1901–10. http://dx.doi.org/10.1139/f00-144.

Testo completo

Abstract (sommario):

During the spring isothermal mixing period (April-May) in 1993-1995, photosynthesis-irradiance and growth-irradiance experiments were conducted in Lakes Erie, Huron, Michigan, and Ontario to assess light limitation. Additionally, nutrient enrichment experiments were conducted in Lake Ontario. Results from the photosynthesis-irradiance experiments suggested that phytoplankton communities in all the lakes can be either light limited or light saturated, as the threshold parameter (Ik) was similar to mean water column irradiances (mean Iwc, ratio = 1.0). Growth-irradiance experiments also suggeste

Gli stili APA, Harvard, Vancouver, ISO e altri

31

Woszczyk, Michał, Wojciech Tylmann, Jan Jędrasik, Tomasz Szarafin, Alfred Stach, Joanna Skrzypczak, and Monika Lutyńska. "Recent sedimentation dynamics in a shallow coastal lake (Lake Sarbsko, northern Poland): driving factors, processes and effects." Marine and Freshwater Research 65, no. 12 (2014): 1102. http://dx.doi.org/10.1071/mf13336.

Testo completo

Abstract (sommario):

Despite the fact that sediment dynamics in shallow coastal lakes strongly influences lake water quality and is crucial for preserving good quality paleo-records from coastal zones, the depositional processes in coastal lakes have not been thoroughly recognised so far. The present study aims at investigating the relationship between lake water circulation and the distribution of surface sediments, identifying the postdepositional physical mechanisms affecting lake deposits, and estimating the intensity of sediment mixing in a coastal lake on the Baltic coast. Our approach includes analyses of s

Gli stili APA, Harvard, Vancouver, ISO e altri

32

Bouffard, Damien, and Alfred Wüest. "Convection in Lakes." Annual Review of Fluid Mechanics 51, no. 1 (January 5, 2019): 189–215. http://dx.doi.org/10.1146/annurev-fluid-010518-040506.

Testo completo

Abstract (sommario):

Lakes and other confined water bodies are not exposed to tides, and their wind forcing is usually much weaker compared to ocean basins and estuaries. Hence, convective processes are often the dominant drivers for shaping mixing and stratification structures in inland waters. Due to the diverse environments of lakes—defined by local morphological, geochemical, and meteorological conditions, among others—a fascinating variety of convective processes can develop with remarkably unique signatures. Whereas the classical cooling-induced and shear-induced convections are well-known phenomena due to t

Gli stili APA, Harvard, Vancouver, ISO e altri

33

Olefeldt, D., K. J. Devito, and M. R. Turetsky. "Sources and fate of terrestrial dissolved organic carbon in lakes of a Boreal Plains region recently affected by wildfire." Biogeosciences 10, no. 10 (October 2, 2013): 6247–65. http://dx.doi.org/10.5194/bg-10-6247-2013.

Testo completo

Abstract (sommario):

Abstract. Downstream mineralization and sedimentation of terrestrial dissolved organic carbon (DOC) render lakes important for landscape carbon cycling in the boreal region. The chemical composition of terrestrial DOC, the downstream delivery of terrestrial DOC and its processing within aquatic ecosystem may all be influenced by climate change, including increased occurrence of wildfire. Here, we assessed composition and lability (during both dark- and UV incubations) of DOC from peatland groundwater and mineral soil groundwater, and from shallow lakes within a peatland-rich region on the Bore

Gli stili APA, Harvard, Vancouver, ISO e altri

34

Durán, C., J. M. Medina-Sánchez, G. Herrera, M. Villar-Argaiz, V. E. Villafañe, E. W. Helbling, and P. Carrillo. "Direct and indirect effects of vertical mixing, nutrients and ultraviolet radiation on the bacterioplankton metabolism in high-mountain lakes from southern Europe." Biogeosciences Discussions 11, no. 5 (May 20, 2014): 7291–325. http://dx.doi.org/10.5194/bgd-11-7291-2014.

Testo completo

Abstract (sommario):

Abstract. As a consequence of global change, modifications in the interaction among abiotic stressors on aquatic ecosystems have been predicted. Among other factors, UVR transparency, nutrient inputs and shallower epilimnetic layers could alter the trophic links in the microbial food web. Currently, there are some evidences of higher sensitiveness of aquatic microbial organisms to UVR in opaque lakes. Our aim was to assess the interactive direct and indirect effects of UVR (through the excretion of organic carbon – EOC – by algae), mixing regime and nutrient input on bacterial metabolism. We p

Gli stili APA, Harvard, Vancouver, ISO e altri

35

Boike, J., C. Georgi, G. Kirilin, S. Muster, K. Abramova, I. Fedorova, A. Chetverova, M. Grigoriev, N. Bornemann, and M. Langer. "Physical processes of thermokarst lakes in the continuous permafrost zone of northern Siberia – observations and modeling (Lena River Delta, Siberia)." Biogeosciences Discussions 12, no. 8 (April 30, 2015): 6637–88. http://dx.doi.org/10.5194/bgd-12-6637-2015.

Testo completo

Abstract (sommario):

Abstract. The thermal regimes of five lakes located within the continuous permafrost zone of northern Siberia (Lena River Delta) have been investigated using hourly water temperature and water level records covering a three year period (2009–2012), together with bathymetric survey data. The lakes included thermokarst lakes located on Holocene river terraces that may be connected to Lena River water during spring flooding, and a thermokarst lake located on deposits of the Pleistocene Ice Complex. The data were used for numerical modeling with FLake software, and also to determine the physical i

Gli stili APA, Harvard, Vancouver, ISO e altri

36

Borowiak, Magdalena, Dariusz Borowiak, and Kamil Nowiński. "Spatial Differentiation and Multiannual Dynamics of Water Conductivity in Lakes of the Suwałki Landscape Park." Water 12, no. 5 (April 30, 2020): 1277. http://dx.doi.org/10.3390/w12051277.

Testo completo

Abstract (sommario):

Water conductivity in 23 lakes of the Suwałki Landscape Park (SLP) was tested in the years 2012–2014. Conductivity profiles were made at the deepest place every two months between spring and autumn water mixing. The collected measurement data, supplemented with historical data, were used to identify factors that shape the spatial variability of water conductivity and to reconstruct its multiannual changes. The range of variability of the mean conductivity of surface water of the SLP lakes ranged from 178 to 522 µS cm−1. The strong negative relationship between conductivity and lake elevation (

Gli stili APA, Harvard, Vancouver, ISO e altri

37

Imberger, J., and G. N. Ivey. "Boundary mixing in stratified reservoirs." Journal of Fluid Mechanics 248 (March 1993): 477–91. http://dx.doi.org/10.1017/s0022112093000850.

Testo completo

Abstract (sommario):

We consider the steady flow driven by turbulent mixing in a benthic boundary layer along a sloping boundary in the general case of a non-uniform background density gradient. The velocity and density fields are decomposed into barotropic and baroclinic components, and a solution is obtained by taking an expansion in the small parameter A, the aspect ratio of the boundary layer defined as the thickness divided by the alongslope length. The flow in the boundary layer is governed by a balance between alongslope baroclinic and barotropic density fluxes. A number of flow regimes can exist, and we sh

Gli stili APA, Harvard, Vancouver, ISO e altri

38

Radke, L. C., K. W. F. Howard, and Peter A. Gell. "Chemical diversity in south-eastern Australian saline lakes. I: geochemical causes." Marine and Freshwater Research 53, no. 6 (2002): 941. http://dx.doi.org/10.1071/mf01231.

Testo completo

Abstract (sommario):

This study re-examined hydrochemical data for south-eastern Australian saline lakes using graphical techniques and reaction path models generated by PHRQPITZ. Results showed that the lakes are more diverse than previous studies have implied. Cyclic solute matrices are modified in catchments by rock–water interactions, mineral dissolution, seawater intrusion and cation-exchange reactions, and within the lakes by sulfate reduction, mixing, brine reflux, mineral precipitation and the recycling of the most soluble salts. Three different pathways of the Eugster–Jones–Hardie models are identified. T

Gli stili APA, Harvard, Vancouver, ISO e altri

39

Anderson, Robert F., Sherry L. Schiff, and Raymond H. Hesslein. "Determining Sediment Accumulation and Mixing Rates Using 210Pb, 137Cs, and Other Tracers: Problems Due to Postdepositional Mobility or Coring Artifacts." Canadian Journal of Fisheries and Aquatic Sciences 44, S1 (December 18, 1987): s231—s250. http://dx.doi.org/10.1139/f87-298.

Testo completo

Abstract (sommario):

Sediment profiles of 137Cs in 12 lakes and of radionuclides (60Co, 134Cs, 226Ra) added experimentally to four lakes at the Experimental Lakes Area, northwestern Ontario, were inconsistent with sediment chronologies derived from 210Pb distributions. Peaks in the 37Cs profiles were sometimes shallower than the depth corresponding to the 1963 fallout maximum (based on 210Pb chronology) and sometimes 137Cs peaks were not observed at all. Expected peaks in the profiles of experimentally added nuclides were similarly absent in three of four lakes. The absence of these peaks at depths corresponding t

Gli stili APA, Harvard, Vancouver, ISO e altri

40

Zagarese, Horacio E., Barbara Tartarotti, Walter Cravero, and Pablo Gonzalez. "UV damage in shallow lakes: the implications of water mixing." Journal of Plankton Research 20, no. 8 (1998): 1423–33. http://dx.doi.org/10.1093/plankt/20.8.1423.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

41

Gu, Ruochuan, and Heinz G. Stefan. "Mixing of Temperature‐Stratified Lakes and Reservoirs by Buoyant Jets." Journal of Environmental Engineering 114, no. 4 (August 1988): 898–914. http://dx.doi.org/10.1061/(asce)0733-9372(1988)114:4(898).

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

42

Stemberger, Richard S. "The influence of mixing on rotifer assemblages of Michigan lakes." Hydrobiologia 297, no. 2 (February 1995): 149–61. http://dx.doi.org/10.1007/bf00017481.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

43

De Crop, Wannes, and Dirk Verschuren. "Mixing regimes in the equatorial crater lakes of western Uganda." Limnologica 90 (September 2021): 125891. http://dx.doi.org/10.1016/j.limno.2021.125891.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

44

Riera, Joan L., John E. Schindler, and Tim K. Kratz. "Seasonal dynamics of carbon dioxide and methane in two clear-water lakes and two bog lakes in northern Wisconsin, U.S.A." Canadian Journal of Fisheries and Aquatic Sciences 56, no. 2 (February 1, 1999): 265–74. http://dx.doi.org/10.1139/f98-182.

Testo completo

Abstract (sommario):

We investigated carbon dynamics in the water column and CO2 and CH4 exchange across the air-water interface in four closed-basin lakes in northern Wisconsin: two with clear, low dissolved organic carbon (DOC) waters and two bog lakes with stained, high-DOC waters. Clear-water lakes quickly became undersaturated following ice-out and remained undersaturated until fall turnover. Bog lakes were supersaturated in CO2 throughout the ice-free season, although surface CO2 concentrations dropped sharply following ice-out and increased again during autumn turnover. Differences in seasonal patterns of C

Gli stili APA, Harvard, Vancouver, ISO e altri

45

Blair, Jennifer M., Ilia Ostrovsky, Brendan J. Hicks, Robert J. Pitkethley, and Paul Scholes. "Growth of rainbow trout (Oncorhynchus mykiss) in warm-temperate lakes: implications for environmental change." Canadian Journal of Fisheries and Aquatic Sciences 70, no. 5 (May 2013): 815–23. http://dx.doi.org/10.1139/cjfas-2012-0409.

Testo completo

Abstract (sommario):

To predict potential effects of climate and anthropogenic impacts on fish growth, we compared growth rates of rainbow trout (Oncorhynchus mykiss) in nine closely located warm-temperate lakes of contrasting morphometry, stratification and mixing regime, and trophic state. Analyses of long-term mark–recapture data showed that in deep oligotrophic and mesotrophic lakes, trout growth rates increased with increasing indices of lake productivity. In contrast, in shallow eutrophic lakes, where fish habitat volume is constrained by temperature and dissolved oxygen, trout growth rates declined with inc

Gli stili APA, Harvard, Vancouver, ISO e altri

46

Fee, E. J., and R. E. Hecky. "Introduction to the Northwest Ontario Lake Size Series (NOLSS)." Canadian Journal of Fisheries and Aquatic Sciences 49, no. 12 (December 1, 1992): 2434–44. http://dx.doi.org/10.1139/f92-269.

Testo completo

Abstract (sommario):

The rationale, design, and limitations of the Northwest Ontario Lake Size Series (NOLSS) research program are described. The primary purpose of NOLSS is to discover how lake size per se influences limnological and fisheries phenomena, so that conclusions drawn from studies of particular lakes can be rigorously scaled and applied to lakes of other sizes. NOLSS consists of six lakes located in a remote wilderness region of Northwest Ontario. These lakes were chosen for their geological, hydrological, and morphological similarity (Canadian Shield geology; water renewal time> 5 yr; fully strati

Gli stili APA, Harvard, Vancouver, ISO e altri

47

Cahill, Kendra L., John M. Gunn, and Martyn N. Futter. "Modelling ice cover, timing of spring stratification, and end-of-season mixing depth in small Precambrian Shield lakes." Canadian Journal of Fisheries and Aquatic Sciences 62, no. 9 (September 1, 2005): 2134–42. http://dx.doi.org/10.1139/f05-127.

Testo completo

Abstract (sommario):

From a 3-year study of 21 northern Ontario lakes, models were developed to determine the duration of ice cover, predict the timing of spring stratification, and predict the end-of-season mixing depth. The model to determine lake freeze and thaw dates was based on the daily variability of water temperature measured with a data logger suspended 1 and 2 m below the surface. The model to predict the duration of time (days) from lake thaw to lake stratification was developed using the mean May air temperature (degrees Celsius), dissolved organic carbon, and lake surface area (r2 = 0.79). The end-of

Gli stili APA, Harvard, Vancouver, ISO e altri

48

Patalas, K., and A. Salki. "Spatial Variation of Crustacean Plankton in Lakes of Different Size." Canadian Journal of Fisheries and Aquatic Sciences 50, no. 12 (December 1, 1993): 2626–40. http://dx.doi.org/10.1139/f93-286.

Testo completo

Abstract (sommario):

The patterns of spatial distribution of planktonic crustaceans changed with increasing lake size. Greatest abundances were often found offshore in smaller lakes but nearshore in larger lakes. Interstation similarity of plankton, measured with Jaccard's and Renkonen's indices, was higher in small- to middle-sized lakes and lower in very small and very large lakes, indicating that mechanisms existed at both ends of the size spectrum which prevented plankton from mixing horizontally. The information content of a single central lake sample was evaluated against a lake average from 9–10 stations. T

Gli stili APA, Harvard, Vancouver, ISO e altri

49

Gawad, S. T. Abdel, J. A. McCorquodale, and H. Gerges. "Near-field mixing at an outfall." Canadian Journal of Civil Engineering 23, no. 1 (February 1, 1996): 63–75. http://dx.doi.org/10.1139/l96-007.

Testo completo

Abstract (sommario):

The near-field mixing of effluent from buoyant and nonbuoyant flows from outfalls discharging into a cross-flowing ambient current in trapezoidal channels has been investigated. A physical model was scaled to represent a typical large outfall into one of the connecting channels of the Great Lakes system. The discharged jet was measured in detail to determine the velocity and concentration fields. The excess velocities and concentrations were found to follow the Gaussian distribution. Empirical expressions for the jet trajectories, minimum dilutions, and plume widths were derived. A correction

Gli stili APA, Harvard, Vancouver, ISO e altri

50

Blanchette, Melanie L., and Mark A. Lund. "Aquatic Ecosystems of the Anthropocene: Limnology and Microbial Ecology of Mine Pit Lakes." Microorganisms 9, no. 6 (June 3, 2021): 1207. http://dx.doi.org/10.3390/microorganisms9061207.

Testo completo

Abstract (sommario):

Mine pit lakes (‘pit lakes’) are new aquatic ecosystems of the Anthropocene. Potentially hundreds of meters deep, these lakes are prominent in the landscape and in the public consciousness. However, the ecology of pit lakes is underrepresented in the literature. The broad goal of this research was to determine the environmental drivers of pelagic microbe assemblages in Australian coal pit lakes. The overall experimental design was four lakes sampled three times, top and bottom, in 2019. Instrument chains were installed in lakes and measurements of in situ water quality and water samples for me

Gli stili APA, Harvard, Vancouver, ISO e altri

Offriamo sconti su tutti i piani premium per gli autori le cui opere sono incluse in raccolte letterarie tematiche. Contattaci per ottenere un codice promozionale unico!