Biological Effects of Artificial Destratification and Aeration in Lakes and Reservoirs - Analysis and Bibliography
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Lake Constance)
Characteristics and implications of surface gravity waves in the littoral zone of a large lake (Lake Constance) Dissertation Zur Erlangung des akademischen Grades des Doktors der Naturwissenschaften (Dr. rer. nat.) an der Universität Konstanz Mathematisch-Naturwissenschaftliche Sektion Fachbereich Biologie vorgelegt von Hilmar Hofmann Konstanz, 2007 Tag der mündlichen Prüfung: 23.06.2008 Referent: Prof. Dr. Frank Peeters Referent: Dr. habil. Klaus Jöhnk Referent: Prof. Dr. habil. Karl-Otto Rothhaupt Bibliografische Information der Deutschen Nationalbibliothek Die Deutsche Nationalbibliothek verzeichnet diese Publikation in der Deutschen Nationalbibliografie; detaillierte bibliografische Daten sind im Internet über http://dnb.ddb.de abrufbar. 1. Aufl. - Göttingen : Cuvillier, 2008 Zugl.: Konstanz, Univ., Diss., 2007 978-3-86727-714-3 © CUVILLIER VERLAG, Göttingen 2008 Nonnenstieg 8, 37075 Göttingen Telefon: 0551-54724-0 Telefax: 0551-54724-21 www.cuvillier.de Alle Rechte vorbehalten. Ohne ausdrückliche Genehmigung des Verlages ist es nicht gestattet, das Buch oder Teile daraus auf fotomechanischem Weg (Fotokopie, Mikrokopie) zu vervielfältigen. 1. Auflage, 2008 Gedruckt auf säurefreiem Papier 978-3-86727-714-3 Table of contents Summary 1 Zusammenfassung 3 General introduction 7 Chapter 1: Temporal scales of water level fluctuations in lakes and 17 their ecological implications Introduction 18 Materials and methods 19 Results 20 Discussion 25 Conclusions 32 Chapter 2: The relative importance of wind and ship waves in the 35 littoral zone -
Asian Journal of Medical and Biological Research Identification Of
Asian J. Med. Biol. Res. 2016, 2 (1), 27-32; doi: 10.3329/ajmbr.v2i1.27565 Asian Journal of Medical and Biological Research ISSN 2411-4472 (Print) 2412-5571 (Online) www.ebupress.com/journal/ajmbr Article Identification of genera of tubificid worms in Bangladesh through morphological study Mariom*, Sharmin Nahar Liza and Md. Fazlul Awal Mollah Department of Fisheries Biology and Genetics, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh *Corresponding author: Mariom, Department of Fisheries Biology and Genetics, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh. E-mail: [email protected] Received: 12 January 2016/Accepted: 17 January 2016/ Published: 31 March 2016 Abstract: Tubificids are aquatic oligochaete worms (F- Naididae, O- Haplotaxida, P- Annelida) distributed all over the world. The worms are very important as they are used as live food for fish and other aquatic invertebrates. A step was taken to identify the genera of tubicifid worms that exist in Mymensingh district, Bangladesh on the basis of some external features including the shape of their anterior (prostomium) and posterior end, number of body segment and arrangement of setae. The study result indicated the existence of three genera among the tubificid worms. These were Tubifex, Limnodrilus and Aulodrilus. All these three genera possessed a cylindrical body with a bilateral symmetry formed by a series of metameres. The number of body segments ranged from 34 to 120 in Tubifex, 50 to 87 in Limnodrilus, and 35 to 100 in Aulodrilus. In Tubifex, the first segment, with the prostomium, was round or triangular bearing appendages, whereas, in Limnodrilus and Aulodrilus, the prostomium without appendages was triangular and conical, respectively. -
Protocol for Equipment Verification Testing For
CHAPTER 3 EPA/NSF ETV EQUIPMENT VERIFICATION TESTING PLAN COAGULATION AND FILTRATION FOR THE REMOVAL OF MICROBIOLOGICAL AND PARTICULATE CONTAMINANTS Prepared By: NSF International 789 Dixboro Road Ann Arbor, Michigan 48105 Copyright 2002 NSF International 40CFR35.6450. Permission is hereby granted to reproduce all or part of this work, subject to the limitation that users may not sell all or any part of the work and may not create any derivative work therefrom. Contact ETV Drinking Water Systems Center Manager at (800) NSF-MARK with any questions regarding authorized or unauthorized uses of this work. April 2002 Page 3-1 TABLE OF CONTENTS Page 1.0 APPLICATION OF THIS VERIFICATION TESTING PLAN .....................................3-6 2.0 INTRODUCTION ................................................................................................................3-6 3.0 GENERAL APPROACH.....................................................................................................3-7 4.0 OVERVIEW OF TASKS.....................................................................................................3-7 4.1 Task A: Characterization of Feed Water ................................................................................3-7 4.2 Task B: Initial Test Runs........................................................................................................3-7 4.3 Task 1: Verification Testing Runs..........................................................................................3-7 4.4 Task 2: Feed Water and Finished Water -
AGENDA REGULAR MEETING of the BOARD of DIRECTORS District Board Room, 2890 Mosquito Road, Placerville, California February 25, 2019 — 9:00 A.M
AGENDA REGULAR MEETING OF THE BOARD OF DIRECTORS District Board Room, 2890 Mosquito Road, Placerville, California February 25, 2019 — 9:00 A.M. Board of Directors Alan Day—Division 5 George Osborne—Division 1 President Vice President Pat Dwyer—Division 2 Michael Raffety—Division 3 Lori Anzini—Division 4 Director Director Director Executive Staff Jim Abercrombie Brian D. Poulsen, Jr. Jennifer Sullivan General Manager General Counsel Clerk to the Board Jesse Saich Brian Mueller Mark Price Communications Engineering Finance Jose Perez Tim Ranstrom Dan Corcoran Human Resources Information Technology Operations PUBLIC COMMENT: Anyone wishing to comment about items not on the Agenda may do so during the public comment period. Those wishing to comment about items on the Agenda may do so when that item is heard and when the Board calls for public comment. Public comments are limited to five minutes per person. PUBLIC RECORDS DISTRIBUTED LESS THAN 72 HOURS BEFORE A MEETING: Any writing that is a public record and is distributed to all or a majority of the Board of Directors less than 72 hours before a meeting shall be available for immediate public inspection in the office of the Clerk to the Board at the address shown above. Public records distributed during the meeting shall be made available at the meeting. AMERICANS WITH DISABILITIES ACT: In accordance with the Americans with Disabilities Act (ADA) and California law, it is the policy of El Dorado Irrigation District to offer its public programs, services, and meetings in a manner that is readily accessible to everyone, including individuals with disabilities. -
Coleoptera: Hydrophilidae) Are Specialist Predators of Snails
Eur. J. Entomol. 112(1): 145–150, 2015 doi: 10.14411/eje.2015.016 ISSN 1210-5759 (print), 1802-8829 (online) Larvae of the water scavenger beetle, Hydrophilus acuminatus (Coleoptera: Hydrophilidae) are specialist predators of snails TOSHIO INODA1, YUTA INODA1 and JUNE KATHYLEEN RULLAN 2 1 Shibamata 5-17-10, Katsushika, Tokyo 125-0052, Japan; e-mail: [email protected] 2 University of the Philippines, Manila, Philippines; e-mail: [email protected] Key words. Coleoptera, Hydrophilidae, Hydrophilus acuminatus, feeding preferences, snail specialist Abstract. Hydrophilus acuminatus larvae are known to feed on aquatic prey. However, there is no quantitative study of their feeding habits. In order to determine the feeding preferences and essential prey of larvae of H. acuminatus, both field and laboratory experi- ments were carried out. Among the five potential species of prey,Austropeplea ollula (Mollusca: Lymnaeidae), Physa acuta (Mollusca: Physidae), Asellus hilgendorfi (Crustacea: Asellidae), Palaemon paucidens (Crustacea: Palaemonidae) and larvae of Propsilocerus akamusi (Insecta: Chironomidae), the first instar larvae of H. acuminatus strongly prefered the Austropeplea and Physa snails in both cafeteria and single-prey species experiments. Larvae that were provided with only snails also successfully developed into second instar larvae, while larvae fed Palaemon, Propsilocerus larvae or Asellus died during the first instar. In addition, the size of adult H. acuminatus reared from first-instar larvae and fed only snails during their entire development was not different from that of adult H. acuminatus collected in the field. This indicates that even though the larvae ofH. acuminatus can feed on several kinds of invertebrates, they strongly prefer snails and without them cannot complete their development. -
How Is the Thermal Performance of Solar Heating Systems Influenced by Thermal Stratification in the Heat Storage
Literature study How is the thermal performance of solar heating systems influenced by thermal stratification in the heat storage Prepared as part of SolNet PhD course No. 13 “Heat Storage for Solar Heating Systems” held during 17-23 May 2014 at Danish Technical University, Lyngby, Copenhagen, Denmark Adrian Pugsley (University of Ulster, Jordanstown, UK) Stefano Poppi (Dalarna University, Borlänge, Sweden) 22 May 2014 1 Contents Literature study ............................................................................................. 1 How is the thermal performance of solar heating systems influenced by thermal stratification in the heat storage ....................................................................... 1 1 Introduction ............................................................................................. 3 1.1 Aim ................................................................................................... 3 1.2 Objectives .......................................................................................... 3 1.3 Solar water heating systems overview ................................................... 3 1.3.1 Tank and heat exchanger arrangements .............................................. 3 1.3.2 Passive and active systems ............................................................. 4 1.4 Definition of thermal stratification ......................................................... 5 1.5 Sanitary considerations ........................................................................ 5 2 The importance -
Description of Source Water System
CHAPTER 2 DESCRIPTION OF THE SOURCE WATER SYSTEM 2.0 Description of the Source Water System During the last 100 years, the CSD’s water system has evolved into a very complex system. It is now estimated to serve a population of 1.4 million people spread out over 370 square miles (Table 2.1). The CSD treats imported raw water and local runoff water at three City WTPs which have a combined capacity of 378 MGD. The CSD treats water by conventional technologies using coagulation, flocculation, sedimentation, filtration and disinfection. Recently, all CSD water treatment plants have been modified to provide for the addition of fluoride to the potable water supply. To ensure safe and palatable water quality, the CSD collects water samples at its reservoirs, WTPs, and throughout the treated water storage and distribution system. The CSD’s use of local and imported water to meet water demand is affected by availability, cost, and water resource management policies. Imported water availability decreases the need to carry over local water for dry years in City reservoirs. CSD policy is to use local water first to reduce imported water purchases; this policy runs the risk of increased dependence on imported water during local droughts. Table 2.1 - City of San Diego General Statistics Population (2010) 1,301,621 Population (Estimated 2014) 1,381,069 Population percent change 6.1 Land Area Square Miles 370 Population Density per Square Mile 3733 Water Distribution Area Square Miles 403 Number of Service Connections (2015) 279,102 2.1 Water Sources (Figure 2.1) Most of California's water development has been dictated by the multi-year wet/dry weather cycles. -
Selection of Suitable Media and Intervals of Media Inoculation for Culturing Tubificid Worms
J. Bangladesh Agril. Univ. 10(2): 325–330, 2012 ISSN 1810-3030 Selection of suitable media and intervals of media inoculation for culturing Tubificid worms M. F. A. Mollah, K. Mosharaf and Mariom Department of Fisheries Biology and Genetics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh, E-mail:[email protected] Abstract Tubificid worms are aquatic invertebrates, belonging to the class Oligochaeta and family Tubificidae, used as an important live food for fishes. The study was conducted to culture Tubificid worms under running water in order to develop a suitable culture media and an optimum duration of media inoculation for culturing Tubificid worms. The worms were cultured under two experiments in cemented culvert system (160×25×10 cm3) for 90 days. In the first experiment the worms were cultured in three different media designated as treatment-I, treatment-II and treatment-III. The highest yield (503.39±22.98 mg cm-2) was found at 70th day of culture duration in the culture media containing a mixture of 35% mustard oil cake, 20% wheat bran, 25% cow-dung and 20% fine sand (treatment-III). Only 1.99 kg media ingredients valued BDT 29.85 were needed to yield 1 kg worms. In the second experiment, the worms were cultured at three different intervals of media inoculation i.e., 6, 10 and 15 days interval designated as treatment-I, treatment-II and treatment-III respectively using the media found best in the first experiment. Inoculation of media at 10 days interval showed significantly (P<0.01) higher production (488.94±5.60 mg cm-2). -
Comparing Modes of Operation for Residential Ceiling Fans to Achieve Thermal Destratification 12/15/2014
WHITE PAPER COMPARING MODES OF OPERATION FOR RESIDENTIAL CEILING FANS TO ACHIEVE THERMAL DESTRATIFICATION 12/15/2014 Credit: Thomas Lesser, Research Engineer Jay Fizer, Research-and-Development Laboratory Manager Christian Taber, Applications Engineer Overview Conventional wisdom says to reverse the direction of a ceiling fan’s rotation in the winter. Heat rises, filling a room with warm air from the top down and requiring heaters to run longer to achieve a desired ambient air temperature at the height of the thermostat and occupants. Running a fan in reverse helps move this heat across the ceiling and down the walls, recirculating the warm air through the space. Fans have been capable of reversing direction for decades, and legislation was passed in 2007 that required ceiling fans to have a reverse function. The logic behind reversing a fan is simple: since running fans in the forward direction creates a cooling effect through air movement, reversing those fans helps recirculate heat in the winter without creating an uncomfortable cooling draft. Big Ass Fans is aiming to prove that there’s a more energy-efficient and comfortable way to address heating conservation with ceiling fans. This study compared the effects of paddle fan reversal with Big Ass Fans’ Haiku ceiling fan, operating in the forward direction at lower speed settings than a paddle fan. Hypothesis Primary Hypothesis: Reverse Operation Is Less Efficient Reversing a paddle fan is not the best way to efficiently recirculate heat and fight heat stratification. A Haiku ceiling fan, operating in the forward direction, can destratify a room more efficiently than paddle ceiling fans operating in reverse. -
Global Lake Responses to Climate Change
REVIEWS Global lake responses to climate change R. Iestyn Woolway 1,2 ✉ , Benjamin M. Kraemer 3,11, John D. Lenters4,5,6,11, Christopher J. Merchant 7,8,11, Catherine M. O’Reilly 9,11 and Sapna Sharma10,11 Abstract | Climate change is one of the most severe threats to global lake ecosystems. Lake surface conditions, such as ice cover, surface temperature, evaporation and water level, respond dramatically to this threat, as observed in recent decades. In this Review, we discuss physical lake variables and their responses to climate change. Decreases in winter ice cover and increases in lake surface temperature modify lake mixing regimes and accelerate lake evaporation. Where not balanced by increased mean precipitation or inflow, higher evaporation rates will favour a decrease in lake level and surface water extent. Together with increases in extreme- precipitation events, these lake responses will impact lake ecosystems, changing water quantity and quality, food provisioning, recreational opportunities and transportation. Future research opportunities, including enhanced observation of lake variables from space (particularly for small water bodies), improved in situ lake monitoring and the development of advanced modelling techniques to predict lake processes, will improve our global understanding of lake responses to a changing climate. Lakes are critical natural resources that are sensitive to For example, changes in ice cover and water temperature changes in climate. There are more than 100 million modify (and are influenced by) evaporation rates9, which lakes globally1, holding 87% of Earth’s liquid sur can subsequently alter lake levels and surface water face freshwater2. Lakes support a global heritage of extent12. -
Market Characterization of Indoor Cannabis Cultivation
Emerging Technologies Market Characterization of Indoor Cannabis Cultivation ET20SCE8030 Prepared by: Emerging Products Customer Service Southern California Edison April 2021 Indoor Cannabis Market Characterization ET20SCE8030 Acknowledgements Southern California Edison’s Emerging Products (EP) group is responsible for this project. It was developed as part of Southern California Edison’s Emerging Technologies Program under internal project number ET20SCE8030. Energy Resource Integration, LLC (ERI) conducted this study with the overall guidance and management from Dave Rivers and Edwin Hornquist. For more information on this project, contact [email protected]. Disclaimer This report was prepared by Southern California Edison (SCE) and funded by California utility customers under the auspices of the California Public Utilities Commission. Reproduction or distribution of the whole or any part of the contents of this document without the express written permission of SCE is prohibited. This work was performed with reasonable care and in accordance with professional standards. However, neither SCE nor any entity performing the work pursuant to SCE’s authority make any warranty or representation, expressed or implied, with regard to this report, the merchantability or fitness for a particular purpose of the results of the work, or any analyses, or conclusions contained in this report. The results reflected in the work are generally representative of operating conditions; however, the results in any other situation may vary depending upon -
Pesticide Toxicity Index for Freshwater Aquatic Organisms, 2Nd Edition
Pesticide Toxicity Index for Freshwater Aquatic Organisms, 2nd Edition By Mark D. Munn, Robert J. Gilliom, Patrick W. Moran, and Lisa H. Nowell National Water-Quality Assessment Program Scientific Investigations Report 2006-5148 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior Dirk Kempthorne, Secretary U.S. Geological Survey P. Patrick Leahy, Acting Director U.S. Geological Survey, Reston, Virginia: 2006 Revised and reprinted: 2006 For sale by U.S. Geological Survey, Information Services Box 25286, Denver Federal Center Denver, CO 80225 For more information about the USGS and its products: Telephone: 1-888-ASK-USGS World Wide Web: http://www.usgs.gov/ Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this report. Suggested reference: Munn, M.D., Gilliom, R.J., Moran, P.W., and Nowell, L.H., 2006, Pesticide toxicity index for freshwater aquatic organisms, 2nd Edition: U.S. Geological Survey Scientific Investigations Report 2006-5148, 81 p. iii FOREWORD The U.S. Geological Survey (USGS) is committed to providing the Nation with accurate and timely scien- tific information that helps enhance and protect the overall quality of life and that facilitates effective management of water, biological, energy, and mineral resources (http://www.usgs.gov/). Information on the quality of the Nation’s water resources is critical to assuring the long-term availability of water that is safe for drinking and recreation and suitable for industry, irrigation, and habitat for fish and wildlife.