Developments in Hydrobiology

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Latest release: March 21, 2015
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At the end of the first international Symposium on Rotifers diately accepted to do this, and kindly made an entire in Lunz, Austria, September 1976, entousiastic pleas were special volume of its Journal 'Hydrobiologia' available made for a second gathering of possibly the same format for this purpose. Also, arrangements were made to have and spirit that had made the first one such a great success. the proceedings out as quickly as possible. The proceedings include all papers that were presented One of us (HJD), 'supported' herein by his friends Charles E. King and Jens Petter Nilssen in particular, tentatively in Gent, and two communications by collegues who could suggested that Gent University might host a meeting of not attend in person. They thus amount to 23 original con this kind, having in mind that since the Xlth congress of tributions, including the summaries of the workshops. All SIL in 1950, no other SIL activity had take places in have been reviewed by the editors, and many, in addition Belgium. In view of the relatively large number of Be1gian by one or more referees. Manuscripts have been adjusted, rotifer workers, many among which are or were active in wherever needed, for grammar, clarity of meaning, and Gent, this proposal sounded acceptable to the attendance length. However, where possible, the flavor of some per of the Lunz meeting, who then gave each other rendez sonal styles was left unaltered.
Rotatoria: Proceedings of the 2nd International Rotifer Symposium held at Gent, September 17–21, 1979
Book 1 · Dec 2012 ·
5.0
At the end of the first international Symposium on Rotifers diately accepted to do this, and kindly made an entire in Lunz, Austria, September 1976, entousiastic pleas were special volume of its Journal 'Hydrobiologia' available made for a second gathering of possibly the same format for this purpose. Also, arrangements were made to have and spirit that had made the first one such a great success. the proceedings out as quickly as possible. The proceedings include all papers that were presented One of us (HJD), 'supported' herein by his friends Charles E. King and Jens Petter Nilssen in particular, tentatively in Gent, and two communications by collegues who could suggested that Gent University might host a meeting of not attend in person. They thus amount to 23 original con this kind, having in mind that since the Xlth congress of tributions, including the summaries of the workshops. All SIL in 1950, no other SIL activity had take places in have been reviewed by the editors, and many, in addition Belgium. In view of the relatively large number of Be1gian by one or more referees. Manuscripts have been adjusted, rotifer workers, many among which are or were active in wherever needed, for grammar, clarity of meaning, and Gent, this proposal sounded acceptable to the attendance length. However, where possible, the flavor of some per of the Lunz meeting, who then gave each other rendez sonal styles was left unaltered.
Hypertrophic Ecosystems: S.I.L. Workshop on Hypertrophic Ecosystems held at Växjö, September 10–14, 1979
Book 2 · Dec 2012 ·
5.0
The idea of convening an international workshop on hypertrophic ecosystems originated during the 20th S.I.L. Congress in Copenhagen. A group of about 30 delegates met there in an informal gathering to discuss the specific problems of lakes which have reached a noxious stage of eutrophication. This ad hoc group realized its own specific identity within the limnological community and suggested the organization of a specialized future meeting on hypertrophic ecosystems. After two years of preparatory work, the workshop was fmally held in Vaxjo, Sweden, between September 10 and 14, 1979, on the premises of the University campus. The Institute of Limnology, University of Lund (Professor Sven Bjork), undertook the task of host and organizer. The City ofVaxjo and the University of Lund co-sponsored the event, which was held under the auspices and patronage of the Societas Internationalis Limnologiae. The objective of the workshop was to seek better understanding of highly-eutrophic, disturbed and unstable aquatic ecosystems (lakes, reservoirs and ponds developing noxious algal and bacterial blooms, fluctuating in their water quality on a daily and seasonal scale, producing gases, off-flavor and toxic substances, experiencing periodic anoxia and massive fish kills, etc.), Le., systems requiring corrective measures and new concepts for their solution beyond those generally accepted for 'normal' eutrophic systems.
Shallow Lakes Contributions to their Limnology: Proceedings of a Symposium, held at Illmitz (Austria), September 23–30, 1979
Book 3 · Dec 2012 ·
5.0
The Symposium on Shallow Lakes, held from 23rd-30th, September 1979, at the Biological Research Station, IlImitz (Austria), was intended to give an insight into current European research on shallow lakes. The reason for the restriction to European participants was firstly to gather as much information as possible on investigations in one geographic area, and secondly the limited time and space available. Since shallow lakes pose a number of problems specifically related to their depth, several symposia have been devoted to this subject. Meetings like the Symposium on the Limnology of Shallow Waters in Tihany (Hungary), in 1973 and the Symposium 'Flachseeforschung' in Steinhude (Fed. Rep. of Germany), in 1974 stressed the need for further communication amongst limnologists working in this field. Moreover several international projects, like the OECD-Eutrophication-Program and the MaB-Project, have included certain aspects of shallow lake limnology. It is hoped by the editors that the proceedings presented here will stimulate further research and a greater exchange of information in this field.
Man and Fisheries on an Amazon Frontier
Book 4 · Mar 2013 ·
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The southwestern Amazon basin, centering on the Territory of Rondönia and the State of Acre, is symbolically if not exactly geographically, the Wild Wild West of Brazil's northern rainforest fron tier. In Brazil the name Rondönia evokes exaggerated images of lawlessness, land feuding, and indigent peasants in search of a homestead. Despite the problems and the perception, the region has pushed ahead, in the view of the govern ment, with large-scale deforestation and the establishment of cattle ranches and agricultural farms raising manioc, rice, bananas, and other cash crops. The mining industry has been launched with the exploitation oftin stone, and the recent gold rush has attracted thousands of miners that are sifting alluvial deposits along the rivers for the precious ore. In an energy-short world, the region boasts of its large hydroelectric potential waiting development in the rivers falling off the Brazilian Shield and draining into the Rio Madeira. Planners are optimistic that Rondönia's resources, once developed, will more than justify, at least in this corner of the rainforest frontier, the Economic Conquest ofthe Amazon. Sandwiched between the economic take-off and the dream, however, are the biological resources - the plants and animals - that must serve as sources of energy and food until human dominated ecosystems replace naturaiones. These resources are, ofnecessity, being heavily attacked to support the shaky economy of the region, but they are very poorly understood in terms of potential productivity and proper management.
Salt Lakes: Proceedings of the International Symposium on Athalassic (Inland) Salt Lakes, held at Adelaide, Australia, October 1979
Book 5 · Dec 2012 ·
1.0
This publication is composed of papers presented at an International Symposium on Athalassic (Inland) Salt Lakes, which was hosted by the University of Adelaide, South Australia, during a week in October 1979. The genesis of the Symposium was at the Copenhagen Congress of the International Association of Limnology (S.1. L.) where it was noted that a number of papers concerned with inland saline lakes were distributed throughout sessions in such a way as to make it difficult to attend all of them. A number of participants at the Congress felt that the ecology of salt lakes had greater homogeneity or cohesiveness than this sort of distribution would suggest, and it was decided that a symposium on salt lakes be held. The symposium was the first under the aegis of the S.l. L. to be held in Australia, and it was very well attended, with participants coming from many countries. The week long programme produced a number of lively and interesting sessions on all aspects of athalassic saline lakes. Participants stayed on after the Symposium for an expedition to Lake Eyre, in the nQrth of South Australia, and were given one of the best of all possible introductions to the Australian environment.
The Biology of the Turbellaria: Proceedings of the Third International Symposium held in Diepenbeek, Belgium
Book 6 · Dec 2012 ·
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Proceedings of the Third International Symposium Held in Diepenbeek, Belgium, August 11-15, 1980
Lakes and Water Management: Proceedings of the 30 Years Jubilee Symposium of the Finnish Limnological Society, held in Helsinki, Finland, 22–23 September 1980
Book 7 · Dec 2012 ·
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Multiple use of natural waters and watersheds poses many practical problems, some of which are clearly limnological, relating for example to carrying capacities oflakes, deterioration of water quality and fisheries management. It is thus important to consider limnological aspects when making decisions in the field of water management. To further this attitude the Finnish Limnological Society considered 'Lakes and Water Management' to be a suitable theme for the Society's Jubilee Symposium, held in Helsinki on 22-23 September, 1980 at the Viikki Campus of the University of Helsinki, to mark the Society's 30th Anniversary. The Finnish Limnological Society has arranged nationallimnological symposia everyone or two years. The papers presented at these symposia have been published in the series 'Limnologisymposion' (in Finnish or Swedish, with short summaries in an internationally spoken language). Due to financial difficulties, the series was terminated as of the symposium in 1979. When preparing the 30th Anniversary of the Finnish Limnological Society, the Governing Board of the Society decided to arrange an international symposium on a theme relevant to modern limnology both in Finland and elsewhere. The selected results of the successful meeting on lakes and water management, which was attended by 220 people from 7 countries, are presented in this volume.
Rutland Water — Decade of Change: Proceedings of the Conference held in Leicester, U.K., 1–3 April 1981
Book 8 · Dec 2012 ·
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Proceedings of a Conference on Rutland Water, held in Leicester, 1-3 April 1981
Sediment/Freshwater Interactions: Proceedings of the Second International Symposium held in Kingston, Ontario, 15–18 June 1981
Book 9 · Dec 2012 ·
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Proceedings of the Second International Sediment/Freshwater Symposium held in Kingston, Ontario, June 15-18, 1981
Ecology of Mysidacea
Book 10 · Dec 2012 ·
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The origins of this volume date back to the 1978 American Society of Limnology and Oceanography (ASLO) meetings in Victoria, British Columbia. Interest in the ecology of mysids, particularly Mysis relieta. was growing rapidly, so a meeting of active workers was held at the ASLO conference. Although the small group of researchers attending that first meeting were primarily North American and interested in Mysis relieta. the group quickly expanded to include researchers from every continent with interests in all aspects of mysid biology (see Appendix). The group, informally called the Mysid Research Group, formed to serve two basic functions·. The first was to facilitate communication among mysid researchers by publishing a member ship list and periodic newsletters. The second was to organize an international symposium on mysid ecology. After several false starts, a symposium was successfully held in conjunction with the 1981 ASLO meetings in Milwaukee, Wisconsin. The symposium lasted over parts of two days with an evening workshop the second day. Altogether, 1 poster and 21 oral presentations were given by 42 researchers. This volume is an outgrowth of that symposium and includes 15 of the papers originally presented at the conference. In order to make the volume as comprehensive as possible, contributions from individuals who could not attend the symposium were solicited. Thus, a total of 22 original contributions make up the present work.
Studies on Lake Vechten and Tjeukemeer, The Netherlands: 25th anniversary of the Limnological Institute of the Royal Netherlands Academy of Arts and Sciences
Book 11 · Dec 2012 ·
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The Netherlands, like the other industrialized countries in the northern hemisphere, is faced with increas ing environmental pro blems. Being a country rich in water - at least in terms of surface area - and low-lying, problems related to water are as old as the nation itself. The problems in regard to water quality are becoming more acute and complicated due to the progressive rise in air and ground pollution. Glaring examples are the acid rains and contamination of ground-water resources by toxic, and often illegal, waste dumps. Being a delta country, the Netherlands is also very vulnerable to pollution from the·water sources outside the country's national boundaries, i.e. the rivers Rhine, Meuse and ScheIdt. Not only the national but also the international authorities are active in developing measures to both prevent and combat water pollution, and to restore as far as possible the natural balance or a 'reasonable' water quality. The pollution abatement programmes are based on ecological theories; accepting waterbodies as aquatic ecosystems, the authorities concerned try to influence and lead the progresses in the systems to reach or maintain the desired ecosystem structure. Suter II (1981) mentioned a number of reasons why the attempts to use ecosystem theories to assess the impacts on the environment have been disappointing to date. It is clear that one of the reasons for the failure is lack of proper knowledge.
Limnology of Parakrama Samudra — Sri Lanka: A case study of an ancient man-made lake in the tropics
Book 12 · Dec 2012 ·
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Forest Water Ecosystems: Nordic symposium on forest water ecosystems held at Färna, Central Sweden, September 28–October 2, 1981
Book 13 · Dec 2012 ·
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'A lake is the landscape's most beautiful and expressive feature. It is earth's eye; looking into which the beholder measures the depth of his own nature. The fluviatile trees next the shore are the slender eyelashes which fringe it, and the wooded hills and cliffs around are its overhanging brows.' 'A field of water betrays the spirit that is in the air. It is continually receiving new life and motion from above.' 'Nothing so fair, so pure, and at the same time so large, as a lake, perchance, lies on the surface ofthe earth. Sky water. It needs no fence. Nations come and go without defiling it. It is a mirror which no stone can crack, whose quicksilver will never wear off, whose gilding Nature continually repairs; no storms, no dust, can dim its surface ever fresh; - a mirror in which all impurity presented to its sinks, swept and dusted by the sun's hazy brush, - this the light dust-cloth, - which retains no breath that is breathed on it, but sends its own to float as clouds high above its surface, and be reflected in its bosom still.' (Henry David Thoreau: 'Walden; or Life in the Woods'. Fourth printing, April 1953, Ri!lehart & Company, New York).
Biology of Rotifers: Proceedings of the Third International Rotifer Symposium held at Uppsala, Sweden, August 30 – September 4, 1982
Book 14 · Dec 2012 ·
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Since the two previous rotifer symposia in Lunz and Gent were highly successful, it was considered important to continue the tradition every third year. Thus a third rotifer symposium was held in Uppsala, Sweden, Aug. 30-Sept. 4, 1982. In the beginning of 1981 the first circular was mailed to the participants of the previous symposia, who in turn were requested to suggest names of other scientists to be invited. As a result many people expressed interest, about 70 of whom finally participated in the symposium (not including temporary visitors from nearby). The participants represented 22 countries, in Europe, North America, Asia and Australia. As with the earlier symposia, some subjects were selected in advance, mainly during discussions between Henri Dumont, Birger Pejler and Peter Starkweather when they met at the SIL congress in Kyoto 1980. Some broad topics such as 'Marine rotifers' were covered for the first time, while other topics were continuations, though more specialized, of previous themes. Thus it is interesting to follow, through the three symposium volumes, recent development within the areas of feeding, popUlation dynamics and ultrastructure. Each prospective participant (with the exception of the reviewers) was invited to present one short paper (alone or with collaborators), which resulted in more than 40 such contributions. Thus, the week's schedule became very crowded, unfortunately leaving no time for more comprehensive workshops etc. However, during the evenings general discussions were held on the topics presented during the day.
Paleolimnology: Proceedings of the Third International Symposium on Paleolimnology, held at Joensuu, Finland
Book 15 · Dec 2012 ·
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The Third International Symposium on Paleolimnology was held at the beginning of September 1981 in Finland. After registration at the University of 10ensuu and the opening session and welcome reception in the Town Hall, the participants moved to a hotel at Koli, a hill famed as a landmark and for its panoramic view. Here the lecture session, lasting four days, took place. Momentarily, the mosaic of the lakeland became visible between the clouds showing the hill slopes covered by mature spruce forest and scattered old birch trees, a reminder of the last slash-and-burn phase some 130 years ago. Altogether 120 paleolimnologists participated in the meetings and most also attended one of the two post-symposium excursions to the Arctic Circle and to South Finland. The lectures covered a wide range of paleolimnological subjects. The main topics, however, included current aspects in the dating of sediments and the history of eutrophication. The symposium was advised by the international organizing committee under the presidency of Professor Edward S. Deevey. Other members present at Koli were Dr. Maj-Britt Florin, Dr. Heikki Ignatius, Prof. Heinz Lamer, Prof. Gerbert Martinson and Dr. Magdalena Ralska-lasiewiczowa. They also gave direction to a discussion on future plans for international activity in paleolimnology. Later in the autumn, after the end of the symposium, the partici pants sent special thanks to the secretaries, Mrs. Eija Merilainen, Mrs. Tuula Nylander and Mrs. Anita Toukomaa, for solving individual problems during the symposium with smooth and rapid efficiency.
Periphyton of Freshwater Ecosystems: Proceedings of the First International Workshop on Periphyton of Freshwater Ecosystems held in Växjö, Sweden, 14–17 September 1982
Book 17 · Dec 2012 ·
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Proceedings of the First International Workshop on Periphyton of Freshwater Ecosystems, held in Växjö, Sweden, 14-17 September, 1982
Brackish-water phytoplankton of the Flemish lowland
Book 18 · Dec 2012 ·
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Numerous papers have been published on the animal and algal communities of fresh-water and marine biotopes, and their relation to the physical and chemical factors of their environment. Brackish-water biotopes have been studied much less intensely, presumably due to their limited distribution and to the complexity of their bioco enoses, composed of fresh-water, brackish-water and marine organisms. The reduced size of the species present forms a supplementary difficulty, which is especially pronounced in the algal communities, a major part of which are composed of nanno-phytoplankters. The University of Ghent considered a detailed survey sufficiently attractive to set up because of the high species diversity, the gaps in the knowledge of brackish-water nannophytoplankton at the species and population levels, and the convenient proximity of brackish-water biotopes. Moreover, the brackish-water biotopes proved to be unique, and consist of a series of landlocked creeks, con nected to the sea by means of an underground salt water supply. VII Contents Chapter 1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Chapter 2 Study area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. 1. Topographical situation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. 2. Historical aspects. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. 3. Edaphic factors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2. 4. Hydrology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2. 4. 1. Salinity fluctuations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2. 4. 2. Origin of the brownish colour of certain creeks. . . . . . . . . . . . . . . . . . . . . . . . 6 2. 4. 3. Hydrography. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. 5. Biotopes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. 6. Climatic features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Chapter 3 Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3. 1. Sampling procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3. 2. Physical properties, water chemistry, chlorophyll a and phaeophytin a . . . . . . . . . . . . . 11 3. 3. Phytoplankton samples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3. 4. Periphyton and benthos samples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sandy Beaches as Ecosystems: Based on the Proceedings of the First International Symposium on Sandy Beaches, held in Port Elizabeth, South Africa, 17–21 January 1983
Book 19 · Apr 2013 ·
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What sight is more beautiful than a high-energy beach facing lines of rolling white breakers? What battleground is more ferocious than where waves and sand meet? What environment could be more exciting to study than this sandy interface between sea and land? And yet how much do we know about sandy beaches? Open sandy beaches are amongst the most neglected fields of scientific study in the coastal environment. This situation exists despite their great extent along most temperate and tropical coastlines and their value as recreational areas and buffer zones against the sea. The traditional oceanographer does not venture into the surf zone while the terrestrial ecologist stops short at the high water mark. Only a few coastal engineers have grappled with the problem of sand and sediment movement as it influences their construction of harbours and pipelines. The marine biologist on the other hand has regarded estuaries, coral reefs and rocky shores, obviously teeming with life, as more fruitful areas for study than the apparently poor animal life on sandy beaches. Sandy beaches have therefore tended to become a scientific no man's land. Over the last decade this situation has begun to improve. Recent work on high-energy beaches has revealed that they may in fact be rich and productive and fertile areas for study. It has even been suggested that beaches and their adjacent surf zones may constitute viable marine ecosystems.
Limnology and Marine Biology in the Sudan
Book 21 · Dec 2012 ·
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This book IS an attempt to review the state-of-the-art in the fields of limnology and of marine biology in the Sudan. The need for it became apparent while we were doing some joint field work in the Nile Valley and along the Red Sea coast. We feel that several reasons justify its publication. Firstly, a vast amount of information is being gathered year after year by the staff of the Hydrobiological Research U nit of the University of Khartoum, in conjunction with the faculties of Medicine and Agriculture of this university; much of this information fails to find an outlet to the scientific literature. Secondly, we did not want to restrict our book to the Nile Valley. The Nile is such a vital life artery to the Sudan that it has dominated limnological efforts in this country, to the neglect of other geographical areas. The same holds true for the field of marine biology, which lags far behind, despite the existence of a marine field laboratory at Suakin and a research institute at Port Sudan. It is hoped that both will develop considerably in the near future.
Eleventh International Seaweed Symposium: Proceedings of the Eleventh International Seaweed Symposium, held in Qingdao, People’s Republic of China, June 19–25, 1983
Book 22 · Dec 2012 ·
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