Journal articles: 'Lake Management'

1

Poikāne, Sandra, and Vita Līcīte. "LAKE MANAGEMENT:THEORY AND PRACTICE." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (June 20, 2001): 144. http://dx.doi.org/10.17770/etr2001vol1.1949.

Full text

Abstract:

Latvian Environment Agency carry out complex monitoring of Kemeri National Park since 1995. At now 6 lakes are included in this monitoring programme: - 3 bog lakes - Akacis Melnezers and Lake Slokas, Lake Aklais; - shallow and overgrown lagoone lake Kanieris; - hypertrophic Lake Valgums with heavy anthropogenic impact. Lake management plan contains: - the description of the current state o f each lake; - the optimal or required lake for each lake (objectives of management); - factors which influence the lake, especially anthropogenic; action plan to achieve the objectives.

APA, Harvard, Vancouver, ISO, and other styles

2

Yao, Liqiang, Dasheng Zou, Jijun Xu, Yanyi Liu, and Bo Yan. "Research on Poyang Lake Regional Protection and Management Countermeasures under the Change of River-lake Relationship." E3S Web of Conferences 283 (2021): 02046. http://dx.doi.org/10.1051/e3sconf/202128302046.

Full text

Abstract:

In recent years, with the construction and operation of the Three Gorges Project, a series of changes have taken place in the relationship between the Yangtze River and Poyang Lake. Changes in hydrological conditions have led to problems in the Poyang Lake area such as early dry season, extended dry duration, and lower dry water level. As the largest freshwater lake in my country, Poyang Lake is an important treasure house of water resources in the middle and lower reaches of the Yangtze River. It is of great significance to study the protection and management of Poyang Lake under the changing relationship between rivers and lakes. This article analyzes the impact of changes in the relationship between rivers and lakes on the hydrological situation of the Poyang Lake area, and sorts out the problems of the ecological environment under the changes of rivers and lakes. On this basis, combined with the ongoing Poyang Lake water conservancy project, the importance of the construction of the hub is analyzed, and relevant suggestions for the current problems facing Poyang Lake are put forward.

APA, Harvard, Vancouver, ISO, and other styles

3

Drenner, Ray W., and Ray K. David Hambright. "Piscivores, Trophic Cascades, and Lake Management." Scientific World JOURNAL 2 (2002): 284–307. http://dx.doi.org/10.1100/tsw.2002.138.

Full text

Abstract:

The concept of cascading trophic interactions predicts that an increase in piscivore biomass in lakes will result in decreased planktivorous fish biomass, increased herbivorous zooplankton biomass, and decreased phytoplankton biomass. Though often accepted as a paradigm in the ecological literature and adopted by lake managers as a basis for lake management strategies, the trophic cascading interactions hypothesis has not received the unequivocal support (in the form of rigorous experimental testing) that might be expected of a paradigm. Here we review field experiments and surveys, testing the hypothesis that effects of increasing piscivore biomass will cascade down through the food web yielding a decline in phytoplankton biomass. We found 39 studies in the scientific literature examining piscivore effects on phytoplankton biomass. Of the studies, 22 were confounded by supplemental manipulations (e.g., simultaneous reduction of nutrients or removal of planktivores) and could not be used to assess piscivore effects. Of the 17 nonconfounded studies, most did not find piscivore effects on phytoplankton biomass and therefore did not support the trophic cascading interactions hypothesis. However, the trophic cascading interactions hypothesis also predicts that lake systems containing piscivores will have lower phytoplankton biomass for any given phosphorus concentration. Based on regression analyses of chlorophyll�total phosphorus relationships in the 17 nonconfounded piscivore studies, this aspect of the trophic cascading interactions hypothesis was supported. The slope of the chlorophyll vs. total phosphorus regression was lower in lakes with planktivores and piscivores compared with lakes containing only planktivores but no piscivores. We hypothesize that this slope can be used as an indicator of “functional piscivory” and that communities with extremes of functional piscivory (zero and very high) represent classical 3- and 4-trophic level food webs.

APA, Harvard, Vancouver, ISO, and other styles

4

Nargesian, Fatemeh, Erkang Zhu, Renée J. Miller, Ken Q. Pu, and Patricia C. Arocena. "Data lake management." Proceedings of the VLDB Endowment 12, no. 12 (August 2019): 1986–89. http://dx.doi.org/10.14778/3352063.3352116.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Levers, Lucia R., and Amit K. Pradhananga. "Recreationist willingness to pay for aquatic invasive species management." PLOS ONE 16, no. 4 (April 14, 2021): e0246860. http://dx.doi.org/10.1371/journal.pone.0246860.

Full text

Abstract:

We estimated willingness to pay for local aquatic invasive species lake management in the form of a daily lake access fee by conducting summer lake surveys in Minnesota, USA. Similar pairs of lakes with differing infestations of zebra mussels, Dreissena polymorpha, and starry stonewort, Nitellopsis obtuse, were used as study sites to infer how being at an infested lake vs. being at an uninfested lake and different local species would impact responses. We also examined recreationists’ visit motivation, and aquatic invasive species perceived risk, knowledge, and awareness of problem. We estimated mean willingness to pay about nine to ten dollars per day, which did not differ significantly by lake. Additionally, perceived risk, awareness of problem, and visit motivation were significant in predicting willingness to pay, which could have important ramifications for aquatic invasive species management.

APA, Harvard, Vancouver, ISO, and other styles

6

Yan, Jingjing, Wei Shi, and Fei Li. "Evaluation and Countermeasures of the Implementation of the Lake Protection and Governance System in Wuhan City, Middle China." Sustainability 10, no. 10 (September 21, 2018): 3379. http://dx.doi.org/10.3390/su10103379.

Full text

Abstract:

The protection and management of lakes is closely related to people’s quality of life and the rapid development of urban economy, and it is also an important aspect of realizing ecological sustainability. Hubei Province has over 1000 lakes, so the importance of the protection and governance of lakes is self-evident. Since the Lake Protection Regulations of Hubei Province came into being, Hubei Province has achieved the gradual extension and improvement of the system of responsibility for the protection of the lake. In order to understand the development of the system of responsibility for the protection of the lake and to explore the shortcomings in the implementation of the lake management system, this paper takes Wuhan city, capital of Hubei Province, as an example, as the object of research and evaluates the implementation effect of the lake protection mechanism and system after the promulgation of Hubei Province Lake Protection Regulations. According to the evaluation results, since the implementation of the regulations, the formal protection of lakes in Wuhan city has been promoted step by step, and the effect of lake management has also been remarkable. The government attaches great importance to lake protection, and the enthusiasm of government staff participating in this is increasing. However, the evaluation results also reveal some weaknesses of the current system of lake protection and governance, including the protection of lake quality, the perfection of the annual appraisal system and the administrative responsibility system, and the optimization of the lake garbage disposal system. On the basis of the results, this paper puts forward countermeasures and ideas to perfect the mechanism and system of lake protection and management in Wuhan city, in order to provide reference for the lake protection and management in other areas.

APA, Harvard, Vancouver, ISO, and other styles

7

Pambudi, Andi Setyo. "SUSTAINABLE LAKE/SITU MANAGEMENT." Indonesian Journal of Applied Research (IJAR) 2, no. 2 (August 13, 2021): 79–91. http://dx.doi.org/10.30997/ijar.v2i2.108.

Full text

Abstract:

The increasingly advanced developmentnin the city of Bogor has an impact on the carrying capacity of the environment. One that is rarely in the spotlight is about the decreasing number of lakes in Bogor. In urb an areas such as Bogor City, local people refer to the lakes as situ or setu. The existence of these “Situ” affects the water system, both in this city and in the surrounding areas. Although “Situ” play a vital role in maintaining the balance of urban water systems, they have not received sufficient attention in the planning documents for the City of Bogor, both annual and medium-term documents. The rapid development of the city affects thequantity and quality of urban lake water in the city of Bogor. These “Situ continue to experience physical and ecological degradation which increases the threat to the health of the population of the city of Bogor. This situation shows that the site has not been managed and functioningnproperly. Human and natural disturbances such as encroachment, garbage disposal, and untreated waste have polluted “Situ” water and reduced its volume capacity. Most of the lakes in the city of Bogor experience disturbances in damaged environmental conditions. This paper seeks to examine th e condition of the “Situ” in Bogor City and its problems based on literature studies from previous researchers. The results of the research will provide recommendations based on scientific theories and existing regulations, both national regional regulations and regional regulations in Bogor City

APA, Harvard, Vancouver, ISO, and other styles

8

Soeprobowati, Tri Retnaningsih. "Lake Management: Lesson Learn from Rawapening Lake." Advanced Science Letters 23, no. 7 (July 1, 2017): 6495–97. http://dx.doi.org/10.1166/asl.2017.9664.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Arnoux, Marie, Florent Barbecot, Elisabeth Gibert-Brunet, John Gibson, and Aurélie Noret. "Impacts of changes in groundwater recharge on the isotopic composition and geochemistry of seasonally ice-covered lakes: insights for sustainable management." Hydrology and Earth System Sciences 21, no. 11 (November 27, 2017): 5875–89. http://dx.doi.org/10.5194/hess-21-5875-2017.

Full text

Abstract:

Abstract. Lakes are under increasing pressure due to widespread anthropogenic impacts related to rapid development and population growth. Accordingly, many lakes are currently undergoing a systematic decline in water quality. Recent studies have highlighted that global warming and the subsequent changes in water use may further exacerbate eutrophication in lakes. Lake evolution depends strongly on hydrologic balance, and therefore on groundwater connectivity. Groundwater also influences the sensitivity of lacustrine ecosystems to climate and environmental changes, and governs their resilience. Improved characterization of groundwater exchange with lakes is needed today for lake preservation, lake restoration, and sustainable management of lake water quality into the future. In this context, the aim of the present paper is to determine if the future evolution of the climate, the population, and the recharge could modify the geochemistry of lakes (mainly isotopic signature and quality via phosphorous load) and if the isotopic monitoring of lakes could be an efficient tool to highlight the variability of the water budget and quality. Small groundwater-connected lakes were chosen to simulate changes in water balance and water quality expected under future climate change scenarios, namely representative concentration pathways (RCPs) 4.5 and 8.5. Contemporary baseline conditions, including isotope mass balance and geochemical characteristics, were determined through an intensive field-based research program prior to the simulations. Results highlight that future lake geochemistry and isotopic composition trends will depend on four main parameters: location (and therefore climate conditions), lake catchment size (which impacts the intensity of the flux change), lake volume (which impacts the range of variation), and lake G index (i.e., the percentage of groundwater that makes up total lake inflows), the latter being the dominant control on water balance conditions, as revealed by the sensitivity of lake isotopic composition. Based on these model simulations, stable isotopes appear to be especially useful for detecting changes in recharge to lakes with a G index of between 50 and 80 %, but response is non-linear. Simulated monthly trends reveal that evolution of annual lake isotopic composition can be dampened by opposing monthly recharge fluctuations. It is also shown that changes in water quality in groundwater-connected lakes depend significantly on lake location and on the intensity of recharge change.

APA, Harvard, Vancouver, ISO, and other styles

10

Hansen, Gretchen J. A., Stephen R. Carpenter, Jereme W. Gaeta, Joseph M. Hennessy, and M. Jake Vander Zanden. "Predicting walleye recruitment as a tool for prioritizing management actions." Canadian Journal of Fisheries and Aquatic Sciences 72, no. 5 (May 2015): 661–72. http://dx.doi.org/10.1139/cjfas-2014-0513.

Full text

Abstract:

We classified walleye (Sander vitreus) recruitment with 81% accuracy (recruitment success and failure predicted correctly in 84% and 78% of lake-years, respectively) using a random forest model. Models were constructed using 2779 surveys collected from 541 Wisconsin lakes between 1989 and 2013 and predictor variables related to lake morphometry, thermal habitat, land use, and fishing pressure. We selected predictors to minimize collinearity while maximizing classification accuracy and data availability. The final model classified recruitment success based on lake surface area, water temperature degree-days, shoreline development factor, and conductivity. On average, recruitment was most likely in lakes larger than 225 ha. Low degree-days also increased the probability of successful recruitment, but primarily in lakes smaller than 150 ha. We forecasted the probability of walleye recruitment in 343 lakes considered for walleye stocking; lakes with high probability of natural reproduction but recent history of recruitment failure were prioritized for restoration stocking. Our results highlight the utility of models designed to predict recruitment for guiding management decisions, provided models are validated appropriately.

APA, Harvard, Vancouver, ISO, and other styles

11

Muhandiki, V. S., and T. J. Ballatore. "Effective lake basin management institutions: lessons from African lakes." Water Science and Technology 56, no. 1 (July 1, 2007): 189–98. http://dx.doi.org/10.2166/wst.2007.451.

Full text

Abstract:

Weak or non-existent institutions are often cited as a major constraint facing management of many lake basins in Africa. By their nature lake basins cut across many sectoral and jurisdictional interests and therefore it is always the case that management of the basins is affected by actions within the various sectors and jurisdictions. Because of the complex nature of issues within lake basins, authority over management of lake basins is dispersed among several institutions, with no single institution having overall authority. Under these circumstances, a major challenge in lake basin management is how to ensure effective coordination among the various players. This paper reviews the situation of lake basin management at eight African lake basins and draws important lessons about lake basin management institutions. It is noted that fragmented approaches, lack of coordination across sectors, and lack of monitoring and enforcement are major institutional weaknesses. Also, it is observed that political will and commitment are essential for the management of African lake basins.

APA, Harvard, Vancouver, ISO, and other styles

12

Milliman, Scott R., A. P. Grima, and Carl J. Walters. "Policy Making within an Adaptive Management Framework, with an Application to Lake Trout (Salvelinus namaycush) Management." Canadian Journal of Fisheries and Aquatic Sciences 44, S2 (December 19, 1987): s425—s430. http://dx.doi.org/10.1139/f87-344.

Full text

Abstract:

Using lake trout (Salvelinus namaycush) rehabilitation in the Laurentian Great Lakes as an example, we combine a policy design process known as "adaptive management" in biological circles with basic concepts found in natural resource economics. Emerging from this synthesis of biological and economic thought is a practical method for making policy choice in fisheries in the presence of biological uncertainty. We introduce this method by first reviewing key biotic uncertainties which impede the progress of lake trout rehabilitation. Drawing upon these uncertainties, a framework is proposed for developing a set of policy options. Included in these options are "actively adaptive" policies which are purposely experimental in hopes of both reviving the lake trout fishery and concurrently yielding data which may alleviate the nagging uncertainties. Using basic concepts from natural resource economics, we then outline how, in the presence of the key uncertainties, the policy which most likely maximizes socioeconomic gains can be chosen from the various options. We conclude with some brief policy implications for lake trout rehabilitation.

APA, Harvard, Vancouver, ISO, and other styles

13

Wang, Teng, Jingjing Yan, Jinlong Ma, Fei Li, Chaoyang Liu, Ying Cai, Si Chen, Jingjing Zeng, and Yu Qi. "A Fuzzy Comprehensive Assessment and Hierarchical Management System for Urban Lake Health: A Case Study on the Lakes in Wuhan City, Hubei Province, China." International Journal of Environmental Research and Public Health 15, no. 12 (November 22, 2018): 2617. http://dx.doi.org/10.3390/ijerph15122617.

Full text

Abstract:

Environmental assessment of eutrophication or heavy metals in urban lakes is an important reference for identifying the pollution degree and formulating pollution prevention strategies. At present, the most research on lake health states is often evaluated from a single angle for toxic metals pollution or eutrophication using the standard comparison method for both, the comprehensive trophic level index (TLI), and the health risk assessment for toxic metals. Moreover, the above deterministic methods probably lead to biased or unreliable assessment due to the randomness and fuzziness in environment system caused by natural change and human activities. In this paper, a fuzzy comprehensive lake health assessment method (FCLHAM) was established to evaluate comprehensive lake health states more comprehensively and accurately, which integrates quantitative eutrophication and health risk considerations. To test and verify FCLHAM, 21 lakes, scientifically selected from the total 143 lakes in the Chinese Wuhan city as study case, were investigated and analyzed for their state of eutrophication and the health risk posed by heavy metals. According to the FCLHAM, the average comprehensive lake health state decreased in the sequence of L20 (considerate risk level) > L1–L17, L19, L21 (moderate risk level) > L18 (low risk level). Based on the result, lakes were classified into three categories: general management (L18), enhanced management (L1–L17, L19, L21), and priority management (L20). If the 143 lakes in Wuhan were classified by the “area-region-function” classification, they would be assigned to the same category as the representative lakes of the same type. At this point, we will attribute all of Wuhan’s lakes to the three types. Depending on the characteristics of each type, a targeted approach to different types of management for each type of lake is a more efficient way to manage many of Wuhan’s lakes. This management mode also serves as an effective reference for the environmental management of urban lakes both at home and abroad. In other words, according to the FCLHAM, a hierarchical management system based on lake characteristics classification was obtained.

APA, Harvard, Vancouver, ISO, and other styles

14

Clarke, Garry T., and Brian T. Dooley. "Management of Lake Illawarra." Wetlands Australia 21, no. 2 (February 28, 2006): 304. http://dx.doi.org/10.31646/wa.279.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Bhatti, Zafar I. "Lake and Reservoir Management." Water Environment Research 74, no. 6 (October 1, 2002): 1113–74. http://dx.doi.org/10.2175/106143002x140675.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Bhatti, Zafar I. "Lake and Reservoir Management." Water Environment Research 75, no. 6 (October 1, 2003): 1354–416. http://dx.doi.org/10.2175/106143003x145309.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Bhatti, Zafar. "Lake and Reservoir Management." Water Environment Research 76, no. 6 (September 2004): 2106–54. http://dx.doi.org/10.2175/106143004x145795.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Bhatti, Zafar. "Lake and Reservoir Management." Water Environment Research 77, no. 6 (September 2005): 2383–432. http://dx.doi.org/10.2175/106143005x54597.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Bhatti, Zafar. "Lake and Reservoir Management." Water Environment Research 78, no. 10 (September 2006): 1925–57. http://dx.doi.org/10.2175/106143006x119459.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Gantzer, Paul A., Vickie L. Singleton, and John C. Little. "Lake and Reservoir Management." Water Environment Research 80, no. 10 (October 2008): 1743–90. http://dx.doi.org/10.2175/106143008x328798.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Gantzer, Paul A., Lee D. Bryant, and John C. Little. "Lake and Reservoir Management." Water Environment Research 81, no. 10 (September 10, 2009): 1854–956. http://dx.doi.org/10.2175/106143009x12445568400494.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Acharya, Sunil, Vikram M. Pattarkine, and Christopher F. Knud-Hansen. "Lake and Reservoir Management." Water Environment Research 82, no. 10 (January 1, 2010): 1767–836. http://dx.doi.org/10.2175/106143010x12756668801897.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

McCord, Stephen A. "Lake and reservoir management." Water Environment Research 69, no. 4 (June 1997): 737–49. http://dx.doi.org/10.2175/106143097x135028.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

McCord, Stephen A., Johanna L. Kollar, and Te-Chou A. Huang. "Lake and reservoir management." Water Environment Research 70, no. 4 (June 1998): 767–80. http://dx.doi.org/10.2175/106143098x134488.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Olem, Harvey, Steve Livengood, and Kirsten M. Sanda. "Lake and reservoir management." Water Environment Research 64, no. 4 (June 1992): 523–31. http://dx.doi.org/10.1002/j.1554-7531.1992.tb00036.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Olem, Harvey. "Lake and reservoir management." Water Environment Research 65, no. 4 (June 1993): 480–86. http://dx.doi.org/10.1002/j.1554-7531.1993.tb00080.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Olem, Harvey, and Jonathan Simpson. "Lake and reservoir management." Water Environment Research 66, no. 4 (June 1994): 489–96. http://dx.doi.org/10.1002/j.1554-7531.1994.tb00120.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Straškraba, M. "Lake and reservoir management." SIL Proceedings, 1922-2010 26, no. 1 (December 1996): 193–209. http://dx.doi.org/10.1080/03680770.1995.11900703.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Chang, William Y. B. "Management of shallow tropical lakes using integrated lake farming." SIL Communications, 1953-1996 24, no. 1 (January 1994): 219–24. http://dx.doi.org/10.1080/05384680.1994.11904040.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Kļaviņš, Māris, Ilga Kokorīte, Valērijs Rodinovs, and Maruta Jankevica. "Past human impact and pollutant loading reconstruction in Lake Engure as a tool for lake basin management." Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. 68, no. 1-2 (April 1, 2014): 31–37. http://dx.doi.org/10.2478/prolas-2014-0003.

Full text

Abstract:

Abstract Environmental pollution of lakes and rivers is considered as one of the most important environmental problems. Analysis of nutrient and trace element accumulation in sedimentary phases of lakes can reflect the overall regional pollution level, and the observed accumulation patterns of pollutants in sediment profiles can be used to reconstruct the history of anthropogenic impacts. As pollutants in sediments are associated with other substances, it is important not only to study total concentrations of pollutants, but also their speciation forms. The aim of this study was to describe phosphorus (including speciation forms) and trace element concentrations in sediment profiles of Lake Engure and to evaluate human impact on organic matter accumulation and properties in lake sediments. The concentrations of the studied elements in sediments of Lake Engure are at background levels, which is clearly evident when compared with metal concentrations in lake sediments in West European countries. The analysis of element concentration changes in sedimentary profiles provided information about trends in recent accumulation (within the last 100 years) and on the balance between natural and human-induced accumulation processes. Analysis of nutrient concentrations in sediments aided in identifying background values as targets for lake management activities.

APA, Harvard, Vancouver, ISO, and other styles

31

Zhang, T., W. H. Zeng, S. R. Wang, and Z. K. Ni. "Temporal and spatial changes of water quality and management strategies of Dianchi Lake in southwest China." Hydrology and Earth System Sciences 18, no. 4 (April 23, 2014): 1493–502. http://dx.doi.org/10.5194/hess-18-1493-2014.

Full text

Abstract:

Abstract. Temporal and spatial changes to the water quality of Dianchi Lake in southwest China were investigated using monthly monitoring data from 2005 to 2012. Dianchi Lake is divided into two parts, Caohai Lake and Waihai Lake, by a man-made dike. Caohai Lake lies at the north of Dianchi Lake, while Waihai Lake is the main water body of Dianchi Lake and accounts for 96.7% of the whole area of the lake. Based on the analysis of total phosphorus (TP), total nitrogen (TN), and chlorophyll a (Chl a) concentrations, it was determined that, in Caohai Lake, the annual concentrations of these variables ranged from 0.19–1.46 mg L−1, 6.11–16.79 mg L−1, 0.06–0.14 mg L−1, respectively. In addition, the annual concentrations of TP, TN and Chl a in Waihai Lake ranged between 0.13 and 0.20 mg L−1, 1.82 and 3.01 mg L−1, and 0.04 and 0.09 mg L−1, respectively. Cluster analysis (CA) classified the 10 monitoring sites into two clusters (cluster A and cluster B) based on similarities of water quality characteristics. Our data revealed that the current status of water quality within Caohai Lake was much worse than that of Waihai Lake. Water quality was seriously degraded during the economic boom near the period of the "Eleventh Five-Year Plan" (2005–2010), and gradually improved from 2010 to 2012 because of the "standard emission directive to industry". The main factors that influenced the spatial and temporal changes to water quality were natural factors including lake evolution and regional characteristic as well as human factors such as pollution load into the lake and management strategies that were already adopted. Some activities and regulations were implemented to enhance the lake environment by controlling wastewater emissions and establishing regulations to protect the lakes in the Yunnan Province. However, problems with institutional fragmentation (horizontal and vertical), simple treatment methods, low-intensity investment in pollution control, and lack of meaningful endogenous pollution control strategies were still present in the lake management strategy. To solve these problems, suitable control measures are needed, especially considering the current old-age status of Dianchi Lake. The fundamental improvement of the water quality within Caohai Lake was dependent on the measures taken in the upper reaches of the Caohai Watershed, including further recovery of submerged plants, resource utilization by floating plants and the reinforcement of sediment disposal. Management strategies for endogenous pollution in Waihai Lake were mainly dependent on restocking algae-eating fish and the ecological restoration of macrophytes. In this way, the swamping trend and the ageing process that is occurring in Dianchi Lake can be stunted. And the management strategies would be a contribution to the management of water conflicts between mankind and ecosystems in similar lakes.

APA, Harvard, Vancouver, ISO, and other styles

32

Wen, X., Z. Li, D. Xiang, S. Shen, D. Hu, and X. Xiao. "INLAND-LAKES PROTECTION APPLICATION WITH HIGH RESOLUTION SATELLITE IMAGERY IN WUHAN CITY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-7/W3 (April 30, 2015): 1025–28. http://dx.doi.org/10.5194/isprsarchives-xl-7-w3-1025-2015.

Full text

Abstract:

The new data source of China’s civilian high resolution earth observation system ZY-3, GF-1 were applied in the application of the monitoring and protection of the inland-lakes in Wuhan, Hubei Province. After the pre-process of these high resolution satellite images, the object-oriented classification and object-oriented change detection technology were applied in the inland-lakes protection of Wuhan, China. In this paper, the Xiwanhu Lake and Tangxunhu Lake including their surrounding areas were selected as an example, with the experiments the status of these lakes including the lake boundary, lake area and the change of these lakes including the lake water surface increased area, lake water surface decreased area were be obtained. Compared with the pixel-based method, the object-oriented classification and change detection technology shows its intuitive and higher precision in inland-lake protection. Remote sensing technology should be applied in monitoring and protection the inland-lake and other respects of water resource management more widely and deeply in China.

APA, Harvard, Vancouver, ISO, and other styles

33

Su, Wei, Jiapeng Wu, Bei Zhu, Kaiqi Chen, Wenqi Peng, and Baoyue Hu. "Health Evaluation and Risk Factor Identification of Urban Lakes—A Case Study of Lianshi Lake." Water 12, no. 5 (May 17, 2020): 1428. http://dx.doi.org/10.3390/w12051428.

Full text

Abstract:

Health assessment and risk factor identification represent the premise and foundation of scientific management and ecological restoration of urban lakes. Based on in-depth understanding of the nature–society duality of urban lakes, a framework for evaluating urban lake health was constructed, including four modules, namely, establishing an index system; determining the index weight; identifying risk factors; and a comprehensive lake health evaluation. Employing this framework, we evaluated Lianshi Lake, Beijing, classifying the lake condition as “sub-healthy”. Based on the evaluation data, we identified the health risk factors of the lake. We applied standard difference rate (SDR) and risk degree (Rd) (safe degree (Sd)) concepts, and classified the indices of risk areas employing the Pareto analysis method. Finally, we identified the lake residence period, landscape connectivity, and eutrophication as the major risk factors in Lianshi Lake. Three factors constitute the basis of ecosystem health and are key targets of ecological restoration: the lake residence period represents the hydrological and hydrodynamic characteristics of the lake; landscape connectivity is described from an ecological perspective, and represents the integrity of the lake ecosystem; and the eutrophication states describe the water quality characteristics and represent the availability of lake water. The results contribute to decision-making for comprehensive urban lake management.

APA, Harvard, Vancouver, ISO, and other styles

34

Del Vecchio, Michael. "Surviving Fisheries Management: Aquaculture, Angling, and Lake Ahmic." Scientia Canadensis 34, no. 2 (February 22, 2013): 1–28. http://dx.doi.org/10.7202/1014336ar.

Full text

Abstract:

The vast majority of inland waters in Ontario have been designated as purely recreational fisheries. Environmental historians who study human-fish relations have demonstrated the influence of anglers in the establishment of fishing regulations and fisheries management policies that sought to maximize fish resources for sport fishing and fishing tourism. To achieve this goal, aquaculture programs were conducted throughout Ontario that artificially reared fish and planted them in lakes. For over a century, from approximately 1860-1960, Ontario relied on aquaculture as a blanket solution to all fishery problems. Over the past fifty years, fisheries science has questioned the ecological benefits of stocking programs. Stocking efforts in the province have been drastically reduced since the 1960s but have continued largely because of grass root initiatives from concerned anglers. Lake Ahmic is home to a small cottage community based out of the village of Magnetawan. The lake has been stocked with a variety of fish species for over a hundred years. In addition to this, several species have been accidentally introduced to Lake Ahmic altering its ecological balance. Between 1987 and 2006, a local angling organization was responsible for initiating and running a walleye-stocking program on Lake Ahmic. In 2006, to the disappointment of the local anglers and greater Magnetawan community, the Ontario Ministry of Natural Resources canceled the stocking program. At the root of the discord between the community and the government is a century long history of efforts to engineer a desirable nature at Lake Ahmic, as well as shifting ideas of what this desirable nature is, and the role that science should play in bringing it about. I argue that a century of stocking fish on Lake Ahmic has reified the practice into the community’s conservation ethos. The environmental history of Lake Ahmic adds insight into the social and political tensions that have arisen as a result of the cancelation of the stocking program.

APA, Harvard, Vancouver, ISO, and other styles

35

Shuter, B. J., M. L. Jones, R. M. Korver, and N. P. Lester. "A general, life history based model for regional management of fish stocks: the inland lake trout (Salvelinus namaycush) fisheries of Ontario." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 9 (September 1, 1998): 2161–77. http://dx.doi.org/10.1139/f98-055.

Full text

Abstract:

Life history characteristics of 54 Ontario lake trout (Salvelinus namaycush) populations vary with differences in lake area (range 25-450 000 ha) and total dissolved solids (TDS) (range 15-180 mg·L-1). Populations from large lakes exhibit greater maximum sizes, greater ages and sizes at first maturity, lower natural mortality rates, and lower sustainable yields. Populations from high-TDS lakes exhibit higher growth rates in early life, lower ages at first maturity, larger sizes at first maturity, and higher natural mortality rates. Angler catchability increases significantly at low population densities. With these relationships included in an age-structured population model, we found that the fishing mortality rate at maximum equilibrium yield ranges from 0.12·year-1 for a 100-ha, low-TDS lake to 0.37·year-1 for a 10 000-ha, high-TDS lake; the fishing effort level at maximum equilibrium yield ranges from 6.6 angler-h·ha-1· year-1 for a 100-ha, low-TDS lake to 4.0 angler-h·ha-1·year-1 for a 10 000-ha, high-TDS lake. Populations from small, low-TDS lakes are more sensitive to overexploitation than populations from large, high-TDS lakes. Easily measured, environmental correlates of life history characters may be common among fish species and are useful in developing exploitation guidelines for populations that are not well studied.

APA, Harvard, Vancouver, ISO, and other styles

36

Pan, Bao Yuan, Guo Ting Yang, Yun Ma, and Yi Bin Ren. "Countermeasure and Research of Jingbo Lake Water Environment Rehabilitation." Advanced Materials Research 518-523 (May 2012): 164–67. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.164.

Full text

Abstract:

China is a country with a large lakes, with the development of social economy, the water pollution of lakes is more serious, lake’s eutrophication has become the major environmental problems of the China's lakes and reservoirs. This document explains through the investigation and evaluation environment to analyze the current situation and the pollution of Jingbo Lake, and puts forward countermeasures and pollution control environmental protection measures for management of Jingbo Lake, develop and provide technical reference of Jingbo Lake.

APA, Harvard, Vancouver, ISO, and other styles

37

Sharip, Zati, and Juhaimi Jusoh. "Integrated lake basin management and its importance for Lake Chini and other lakes in Malaysia." Lakes & Reservoirs: Research & Management 15, no. 1 (March 2010): 41–51. http://dx.doi.org/10.1111/j.1440-1770.2010.00421.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Debastiani-Júnior, José Roberto, and Marcos Gomes Nogueira. "How water level management affects cladoceran assemblages in lakes lateral to a reservoir." Marine and Freshwater Research 67, no. 12 (2016): 1853. http://dx.doi.org/10.1071/mf14281.

Full text

Abstract:

This study analysed the effects of induced water level depletion for macrophyte control in a tropical reservoir on the cladoceran fauna of two differentially connected lateral lakes. One lake, Pedra Branca, is located in the right margin and has a narrow connection to the main river–reservoir channel as well as a higher proportion of submerged macrophytes. On the opposite margin is Lake Guaritá, which is shallower and has a wider connection. Samples were collected over 16 consecutive months, including periods before, during and after depletion. Both lakes showed closely related trends in depth, pH, DO, conductivity, chlorophyll, temperature, suspended matter, phosphorus, nitrogen, silicate and ammonium variation, although a wider amplitude in variation was observed in Pedra Branca. This lake also had higher cladoceran diversity and a predominance of Chydoridae, whereas Bosminidae prevailed in Guaritá. Depletion caused a reduction in richness and an increase of Bosminidae in both lakes, although this was more pronounced in Pedra Branca. The management moderately affected both lakes but continuous application of this procedure may lead to a shift in the system steady-state and a loss of diversity that could be difficult to reverse.

APA, Harvard, Vancouver, ISO, and other styles

39

Lange, Robert E., and Philip A. Smith. "Lake Ontario Fishery Management: The Lake Trout Restoration Issue." Journal of Great Lakes Research 21 (1995): 470–76. http://dx.doi.org/10.1016/s0380-1330(95)71118-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Soeprobowati, Tri Retnaningsih. "Integrated Lake Basin Management for Save Indonesian Lake Movement." Procedia Environmental Sciences 23 (2015): 368–74. http://dx.doi.org/10.1016/j.proenv.2015.01.053.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Dets, I. A. "Interregional lake basin management: the case of Lake Tahoe." IOP Conference Series: Earth and Environmental Science 629 (January 14, 2021): 012058. http://dx.doi.org/10.1088/1755-1315/629/1/012058.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Alfonso, María, Andrea Brendel, Alejandro Vitale, Carina Seitz, María Piccolo, and Gerardo Perillo. "Drivers of Ecosystem Metabolism in Two Managed Shallow Lakes with Different Salinity and Trophic Conditions: The Sauce Grande and La Salada Lakes (Argentina)." Water 10, no. 9 (August 25, 2018): 1136. http://dx.doi.org/10.3390/w10091136.

Full text

Abstract:

Understanding the drivers and how they affect ecosystem metabolism is essential for developing effective management policy and plans. In this study, net ecosystem production (NEP), ecosystem respiration (R), and gross primary production (GPP) rates were estimated in relation to physicochemical, hydrological, and meteorological variables in La Salada (LS) and Sauce Grande (SG), two shallow lakes located in an important agricultural region with water management. LS is a mesosaline, mesotrophic-eutrophic lake, whereas SG is a hyposaline and eutrophic lake. GPP and R showed daily and seasonal variations, with R exceeding GPP during most of the study period in both lakes. Net heterotrophic conditions prevailed during the study period (NEP LS: −1.1 mmol O2 m−2 day−1 and NEP SG: −1.25 mmol O2 m−2 day−1). From data analysis, the temperature, wind speed, and lake volume are the main drivers of ecosystem metabolism for both lakes. Despite the significant differences between the two lakes, the NEP values were similar. The different hydrological characteristics (endorheic vs. flushing lake) were crucial in explaining why the two different systems presented similar ecosystem metabolic rates, emphasizing the importance of water management.

APA, Harvard, Vancouver, ISO, and other styles

43

Arthington, A. H., G. J. Miller, and P. M. Outridge. "Water Quality, Phosphorus Budgets and Management of Dune Lakes Used for Recreation in Queensland (Australia)." Water Science and Technology 21, no. 2 (February 1, 1989): 111–18. http://dx.doi.org/10.2166/wst.1989.0036.

Full text

Abstract:

The water quality and trophic status of two Queensland dune lakes are compared in the context of assessing the impacts of recreational use and other human activities. Lake Freshwater, Cooloola, has a mean total phosphorus concentration of 12.1 ± 3.3 µg l−1 and is approaching mesotrophic status, whereas Blue Lagoon, Moreton Island, is oligotrophic. Natural loadings of total phosphorus, ranging from 0.2 to 0.35 g m−2 yr−1, are consistent with the progression of Lake Freshwater from oligotrophic to mesotrophic status. The phosphorus loadings predicted by Vollenweider's (1976) one-compartment model, for two values of mean lake depth, also indicate that Lake Freshwater is tending towards eutrophic conditions. The management implications of phosphorus loadings and budgets are discussed.

APA, Harvard, Vancouver, ISO, and other styles

44

Dr. S. Smys, Dr. Abul Basar, and Dr. Haoxiang Wang. "CNN based Flood Management System with IoT Sensors and Cloud Data." December 2020 2, no. 4 (October 15, 2020): 194–200. http://dx.doi.org/10.36548/jaicn.2020.4.001.

Full text

Abstract:

Water is one of the basic resource need for every human in the world. The improper management of water storage system can lead a human life to any extent. As a result of technology development, the proposed model is developed to manage the water storage systems like dam and lake through remotely placed sensor signals. The sensors which are placed in the storage places gives the strength and storage capacity of the dam and lakes. Similarly the sensors which are placed at the sender dam or lake are used to predict the incoming water level to the receiver lake. This improves the prediction rate of flood in the river paths and this prediction allows the incoming dam to send off some waters outside to allocate some space for incoming waters. The data which are generated by the connected dams are stored in a cloud space for analyzing the water flow management. The sensors connected in a lake or dam is connected with IoT platform to avoid wire connections. Hence this model avoids sudden floods during rainy conditions and it ensures the physical strength of the lake and dam by continuous monitoring process.

APA, Harvard, Vancouver, ISO, and other styles

45

Zhao, Y. W., M. J. Xu, F. Xu, S. R. Wu, and X. A. Yin. "Development of a zoning-based environmental-ecological-coupled model for lakes: a case study of Baiyangdian Lake in North China." Hydrology and Earth System Sciences Discussions 11, no. 2 (February 10, 2014): 1693–740. http://dx.doi.org/10.5194/hessd-11-1693-2014.

Full text

Abstract:

Abstract. Environmental/ecological models are widely used for lake management as they provide a means to understand physical, chemical and biological processes in highly complex ecosystems. Most research focused on the development of environmental (water quality) and ecological models, separately. Limited studies were developed to couple the two models, and in these limited coupled models a lake was regarded as a whole for analysis (i.e., considering the lake to be one well-mixed box), which was appropriate for small-scale lakes and was not sufficient to capture spatial variations within middle-scale or large-scale lakes. In response to this problem, this paper seeks to establish a zoning-based environmental-ecological-coupled model for a lake. The hierarchical cluster analysis (HCA) was adopted to determine the number of zones for a lake based on the analysis of hydrological, water quality and ecological data. MIKE21 model was used to construct two-dimensional hydrodynamics and water quality simulations. STELLA software was used to create a lake ecological model which can simulate the spatial variations of ecological condition based on flow field distribution results generated by MIKE21. The Baiyangdian Lake, the largest freshwater lake in Northern China, was adopted as the study case. The results showed that the new model was promising to predict the spatial variation trends of ecological condition in response to the changes of water quantity and water quality for lakes, and could provide a great convenience for lake management.

APA, Harvard, Vancouver, ISO, and other styles

46

Madenjian, Charles P., Brian D. Chipman, and J. Ellen Marsden. "New estimates of lethality of sea lamprey (Petromyzon marinus) attacks on lake trout (Salvelinus namaycush): implications for fisheries management." Canadian Journal of Fisheries and Aquatic Sciences 65, no. 3 (March 1, 2008): 535–42. http://dx.doi.org/10.1139/f07-187.

Full text

Abstract:

Sea lamprey (Petromyzon marinus) control in North America costs millions of dollars each year, and control measures are guided by assessment of lamprey-induced damage to fisheries. The favored prey of sea lamprey in freshwater ecosystems has been lake trout (Salvelinus namaycush). A key parameter in assessing sea lamprey damage, as well as managing lake trout fisheries, is the probability of an adult lake trout surviving a lamprey attack. The conventional value for this parameter has been 0.55, based on laboratory experiments. In contrast, based on catch curve analysis, mark–recapture techniques, and observed wounding rates, we estimated that adult lake trout in Lake Champlain have a 0.74 probability of surviving a lamprey attack. Although sea lamprey growth in Lake Champlain was lower than that observed in Lake Huron, application of an individual-based model to both lakes indicated that the probability of surviving an attack in Lake Champlain was only 1.1 times higher than that in Lake Huron. Thus, we estimated that lake trout survive a lamprey attack in Lake Huron with a probability of 0.66. Therefore, our results suggested that lethality of a sea lamprey attack on lake trout has been overestimated in previous model applications used in fisheries management.

APA, Harvard, Vancouver, ISO, and other styles

47

Lau, S. S. S., and S. N. Lane. "Continuity and change in environmental systems: the case of shallow lake ecosystems." Progress in Physical Geography: Earth and Environment 25, no. 2 (June 2001): 178–202. http://dx.doi.org/10.1177/030913330102500202.

Full text

Abstract:

Traditional ideas concerning environmental management tend to be based upon simple relationships between cause and effect. Such approaches make the design of environmental management strategies fairly straightforward: once the cause of a problem has been identified, it is necessary only to address the cause and/or help the system to recover through some sort of attempt at restoration. In the case of shallow lake eutrophication, research in the 1960s and 1970s identified phosphorus as the key control on the trophic state of a lake and, hence, recommended reductions in the supply of phosphorus to lakes as the necessary remedial measure. However, subsequent research has illustrated that such measures were not always successful. This article reviews the science of shallow lake eutrophication to demonstrate the role of ecosystem-specific biological and chemical interactions in conditioning the response of lakes to remedial measures and, hence, shows how new ideas of complexity help us to understand the behaviour of lake ecosystems so that we can develop alternative environmental management strategies.

APA, Harvard, Vancouver, ISO, and other styles

48

Baťka, Jan, Vít Vilímek, Eva Štefanová, Simon J. Cook, and Adam Emmer. "Glacial Lake Outburst Floods (GLOFs) in the Cordillera Huayhuash, Peru: Historic Events and Current Susceptibility." Water 12, no. 10 (September 23, 2020): 2664. http://dx.doi.org/10.3390/w12102664.

Full text

Abstract:

The aim of this paper is to create a glacial lake inventory for the Cordillera Huayhuash in Peru and to evaluate the susceptibility of lakes to the generation of glacial lake outburst floods (GLOFs). Using high-resolution satellite images, we undertook qualitative and quantitative analysis of lake type, characteristics and distribution, and placed our findings within the context of existing Peru-wide lake inventories. We also mapped and analyzed past GLOFs, revealing a total of 10 GLOFs and 4 ambiguous events, most of which have not been reported before. We found that past GLOFs usually occurred as a result of moraine dam breach during the proglacial stage of lake evolution. Further, we used our lake inventory to evaluate GLOF susceptibility of all lakes larger than 20,000 m2. Of 46 evaluated lakes, only two lakes (Lake Tsacra and Lake W014) are currently susceptible to generating a GLOF, which would most likely be through dam overtopping resulting from a flood originating in smaller lakes located upstream. The future perspectives of lake evolution and implications for GLOF hazard management are discussed in light of the post-Little Ice Age glacier ice loss as well as in the context of extensive related research undertaken in the nearby Cordillera Blanca.

APA, Harvard, Vancouver, ISO, and other styles

49

Shero, Brian, and Jill Singer. "Fire Effects on the Biological and Geological Characteristics of Sediments in Yellowstone Lake: A Basis for Improved Fire Management Policy." UW National Parks Service Research Station Annual Reports 14 (January 1, 1990): 173–75. http://dx.doi.org/10.13001/uwnpsrc.1990.2931.

Full text

Abstract:

A number of studies have examined the effect of forest fires on the nutrient and productivity levels of lakes and streams, but no consistent pattern has been identified. In the specific case of Yellowstone Lake, Romme and Knight (1982) and Albin (1979) suggested that cyclic fires in the Yellowstone Lake drainage basin could potentially increase nutrient loading of the lake and thereby increase its productivity.

APA, Harvard, Vancouver, ISO, and other styles

50

Somlyódy, L. "A Lake Eutrophication Management Model." Water Science and Technology 19, no. 5-6 (May 1, 1987): 711–19. http://dx.doi.org/10.2166/wst.1987.0250.

Full text

Abstract:

An eutrophication management optimization model (EMOM) was developed and applied for Lake Balaton - a typical shallow water body - in order to establish a short term control strategy. It incorporates a stochastic load response model which was derived from the Monte Carlo type usage of a four-compartment, four-box dynamic lake eutrophication model after developing synthetic time series generators for forcing functions. EMOM also includes a planning mode nutrient loading model which accounts for various uncertainties and stochastic effects. Major control options are phosphorus precipitation on existing sewage treatment plants and the construction of pre-reservoirs. Among alternative objective functions and models formulated, here a linearized expectation - variance model is discussed which captures the major stochastic features of the problem. The “optimal” short term strategy is worked out for Lake Balaton. In the frame of a sensitivity analysis the importance of various physical, chemical, biological and economic parameters is evaluated as regarding for eutrophication management.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Lake Management'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles