Download or read book Algal Diversity Dynamics Ecological Assessment and Monitoring in the River Ecosystems of the Eastern Mediterranean written by Sophia Barinova and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rivers in the Eastern Mediterranean, Israel in particular, are small and located mostly in the coastal plane. In the first step of ecosystem assessment, 671 species of algae and cyanobacteria belonging to nine taxonomic divisions were revealed by our research during 2002-2009 in the Yarqon, Alexander, Hadera, Qishon, and Oren rivers in the coastal plane, the Lower and Upper Jordan Rivers in the rift valley, as well as the Zin stream in the Negev Desert. This book presents and discusses research which suggests that in semiarid environments the influence of anthropogenic factors is strongly modulated by climatic impacts causing a marked decrease of species richness in aquatic ecosystems from north to south.
Download or read book The Eastern Mediterranean as a Laboratory Basin for the Assessment of Contrasting Ecosystems written by P.M. Malanotte-Rizzoli and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the outcome of a NATO Advanced Research Workshop on "The Eastern Mediterranean as a laboratory basin for the assessment of contrasting ecosystems" that was held in Kiev, Ukraine, March 23-27, 1998. The scientific rationale of the workshop can be summarized as follows. The Eastern Mediterranean is the most nutrient impoverished and oligotrophic large water body known. There is a well-defined eastward trend in nutrient ratios over the entire Mediterranean that starts at the Gibraltar Straits and, through the western basin, proceeds to the Ionian and Levantine Seas. Supply of nutrients to the entire Mediterranean is limited by inputs from the North Atlantic and various river systems along the sea. The unique feature of the Mediterranean is the presence of an eastward longitudinal trend in available nitrate/phosphate ratios. This apparently induces a west-to-east variation in the structure of the pelagic food web and trophic interactions. In this context the Mediterranean, and in particular its Eastern basin, provides probably a unique platform to explore the hypotheses related to the suggested phosphate-limitation on production and to the shift between "microbial" and "classical" modes of operation of the photic food web. The major exception of the overall oligotrophic nature of the Eastern Mediterranean is the highly eutrophic system of the Northern Adriatic Sea. Here, during the last two decades the discharges of the northern rivers (especially of the Po), together with municipal sewage, have led to a very marked increase of nutrients and subsequent imponent eutrophication events.
Download or read book Anthropogenic Pollution written by Arun Arya and published by The Readers Paradise . This book was released on 2016-07-01 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: The global environment has been going through significant challenges in recent times due to a number of factors such as industrial pollution, expansion of agricultural land way beyond the fringe forest zones, destruction of virgin forests, loss of quality agricultural lands due to soil erosion, loss of global wildlife and biodiversity, climate change, global warming, devastating forest fires, floods, draughts, melting of glaciers to mention only a handful. The list could possibly go on and on with never ending items being added covering every aspect of modern human life. But there is an important underlying hidden factor behind all these that we all need to identify and realize. The most alarming fact about this hidden factor is that they are all directly or indirectly impacted by human activities in some way or other. Human civilizations have reached great strides from the earliest days when men first discovered wheel or learnt the art of agriculture and crop and livestock breeding. We have seen the age of computronics, robotics and now moving into the age of biotechnology, genetic engineering and nanotechnology. Our science quests have stretched beyond the borders of the home planet and we have even started stretching hands in unlocking the secrets of distant members of our solar system. This is indeed tremendous progress; there could be no doubt about that. But at the same time we also need to remember about the impending darkness too beneath the lamp that provides light to the rest of room. While we are standing in gaining a lot; but are we paying enough attention to what we are also loosing at the same time. The loss of forested areas, building up carbon dioxide in the global atmosphere, pollution of both fresh and salt water via number of toxic chemicals both of inorganic and organic nature, poor quality of the air we are breathing and the catastrophic loss of global biodiversity- are these not a sign of regress instead of the so called and highly cherished progress towards a darker and destructive future. Human or anthropogenic impacts are in turn devastating the planet with our attention being shifted only to the shinning aspect of our civilizations. There is indeed a darker side of every bright picture that is being placed in front of our glaring eyes. There is no silver lining in every cloud that we see on the sky. We are becoming seriously myopic and choosing to ignore the deadly symptoms that are showing up in front of us every now and then as a result of our own activities. Anthropogenic impacts have been devastating to our global ecosystems and are challenging our local environments in a significant manner. As responsible global citizens we strongly believe that we need to voice our concerns to the incessant global environmental pollution happening at every instance at different corners of earth. Hence is the humble effort of coming up with an international, peer-reviewed volume on Anthropogenic Pollution: Causes and Concerns. The current volume is a collection of a number of articles from scientists, academics, researchers, journalists, bureaucrats and technocrats from different parts of the world. Each article talks about a separate story and highlights some specific problems caused by anthropogenic impact and resulting in detrimental forms of environmental pollution. Each article is complete with its table, graphs, diagrams and bibliography to cater to a wide range of readers from serious academics, researchers and students to environmental enthusiasts and general public interested in stretching their boundary of knowledge way beyond traditional education. The volume will also be useful for both under graduate and post graduate students specializing in environmental science/studies and also for the MPhil curriculum and entry level PhD courses at different academic institutes.
Download or read book Real time Coastal Observing Systems for Marine Ecosystem Dynamics and Harmful Algal Blooms written by Babin, Marcel and published by UNESCO. This book was released on 2008-06-05 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proliferation of harmful phytoplankton in marine ecosystems can cause massive fish kills, contaminate seafood with toxins, impact local and regional economies and dramatically affect ecological balance. Real-time observations are essential for effective short-term operational forecasting, but observation and modelling systems are still being developed. This volume provides guidance for developing real-time and near real-time sensing systems for observing and predicting plankton dynamics, including harmful algal blooms, in coastal waters. The underlying theory is explained and current trends in research and monitoring are discussed.Topics covered include: coastal ecosystems and dynamics of harmful algal blooms; theory and practical applications of in situ and remotely sensed optical detection of microalgal distributions and composition; theory and practical applications of in situ biological and chemical sensors for targeted species and toxin detection; integrated observing systems and platforms for detection; diagnostic and predictive modelling of ecosystems and harmful algal blooms, including data assimilation techniques; observational needs for the public and government; and future directions for research and operations.
Download or read book Monitoring of Harmful Algal Blooms written by Lasse H. Pettersson and published by Springer Science & Business Media. This book was released on 2012-07-25 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monitoring of Harmful Algae Blooms is a timely guide to the research techniques in use to monitor visible algae blooms and through remote sensing, including infrared techniques, predict them through mathematical modeling. Drawing on current and future satellite data, the book presents visible perspectives on a more efficient HAB monitoring system for the future. It also emphasizes practical applications, impacting on marine ecology, national economy, health, food and safety and quality assurance.
Download or read book Macroalgal Forests Ecology Long term Monitoring and Conservation in a Mediterranean Marine Protected Area written by Alba Medrano Cuevas and published by . This book was released on 2020 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: "All marine ecosystems in the Mediterranean Sea are highly threatened by anthropogenic stressors that can alter their structure and function, especially in rocky shores. Moreover, extreme climate events are becoming more frequent and intense in our times. To detect the potential impacts and the vulnerability of any ecosystem, the combination of experimental and observational studies in the field is vital. In addition, long-term monitoring programs carried out simultaneously on human-protected and human- impacted environments may be crucial to discern the nature of the impacts.Macroalgal beds dominate the shallow benthic Mediterranean habitats where they play a pivotal role. Among them, the canopy-forming Cystoseira sensu lato species represent the highest structural complexity level and provide unique habitats with ecological services comparable to terrestrial forests. Canopy-forming algae are in decline in many coastal areas where, among other impacts, overgrazing by herbivorous can lead to the loss of these diverse habitats shifting towards degraded sea urchin barren grounds. Conservation tools such as marine reserves or No-take zones (NTZs) have the potential to reduce some of the anthropogenic threats and to restore benthic habitats through trophic cascade effects caused by the major abundance of predator. Besides, active ecosystem restoration strategies may speed up the recovery of impacted ecosystems. Nevertheless, there is an important lack of continuous and long-term studies providing robust ecological data of the natural dynamic and vulnerability of macroalgal assemblages while integrating the role of marine conservation.In this dissertation, different methodological approaches were combined to explore the long-term dynamics of macroalgal communities and the role of different conservation strategies (NTZs and active restoration) in the Montgrí, Medes Islands, and Baix Ter (MIMBT) Natural Park (NW Mediterranean Sea). In the first two chapters, the analysis of long-term monitoring datasets provided essential information to understand how macroalgal assemblages and sea urchin populations respond to natural fluctuations and anthropogenic disturbances, mainly overfishing. In the third chapter, field monitoring and sampling were combined with genetic analyses to increase the ecological knowledge of the canopy-forming alga Treptacantha elegans as well as to describe their recent expansion. In the fourth and last chapter, active restoration actions as seeding experiments were conducted in aquaria and in the field to optimize restoration techniques to recover degraded shallow ecosystems. In addition, different restoration strategies were combined in the field inside and outside the Medes Islands NTZ to evaluate the role of marine protection on restoration activities.The results of this thesis showed that the abundance and structure of the main macroalgal assemblages in the MIMBT Natural Park were stable at large over the last fifteen years. Overall, any effect of marine protection was observed on the most representative species of this habitat but we found a higher abundance of canopy- forming algae inside the NTZ than in unprotected areas. Contrarily, sea urchin populations were deeply affected by a severe storm in 2008 which caused the almost depletion of its populations in all the studied areas. Although similar trajectories of sea urchin abundance have been observed over the years between both protection regimes due to the large stability of the sea urchin high-density state, clear differences in the recovery of sea urchin populations were found after the storm linked to marine protection. The sea urchin populations inside the NTZ recovered slowly than the populations outside the NTZ inside due to the higher predatory fish abundance inside the NTZ.In contrast to the global widespread decline of canopy-forming macroalgal assemblages across many regions during the last decades, Treptacantha elegans has increased their distributional range and has shown an extraordinary expansion along the Catalan northern coast over the last two decades. The results of this thesis contributed to explaining this geographical and depth range extension, which could be linked to some ecological attributes such as their relative fast-growing dynamics, early fertile maturity, and high turnover rate. Besides, the molecular analyses have shown that all the populations of T. elegans in the Catalan coast constitute a single genetic group that could be originated in the MIMBT Natural Park under the marine protection benefit. Given the fast and stable population dynamics of T. elegans, this species was selected as a potential species to actively restore degraded shallow rocky ecosystems (e.g., sea urchin barren grounds) turning them into productive marine forests. In this way, the effectiveness of active restoration actions combined with passive strategies such as marine protection (e.g., NTZs) was experimentally demonstrated.This thesis addressed marine vegetation changes in the shallow rocky shores of the MIMBT Natural Park integrating the macroalgal and sea urchin dynamics in front of natural and human-related impacts, and the role and effectiveness of Marine Protected Areas and restoration actions as conservation tools at lower trophic levels. Besides, since most of this thesis is based on long-term monitoring data, a valuable baseline of the algal community's structure and functioning was provided here which could be vital to predict and detect ecological changes that could jeopardize the preservation of marine forests." -- TDX.
Download or read book ECOLOGICAL ASSESSMENT OF ALGAL FLORA BIODIVERSITY IN LENTIC HYDROSPHERE written by Dr. Vaibhavi Prashant Patil and Mr. Arjun Sudhir Shahu and published by Ashok Yakkaldevi. This book was released on 2022-08-27 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is useful for life activities of human beings. It is used for various purposes like drinking, irrigation, transport, sanitation, power generation and industries. Water is the most important and essential abiotic factor of all kinds of ecosystem and it also forms the habitat for enormous varieties of organisms. In other words, water forms the largest ecosystem, that is aquatic ecosystem of the biosphere. Global water is broadly classified into two classes viz fresh water and salt water. Fresh water present in lentic and lotic form. The rise and fall in chemical and physical factors of water bodies frequently affect the flora & fauna, alternating their number and diversity. About 97% of earths water is ocean water. It is saline and not useful for drinking and irrigation. Rest of 02% is in the form of ice at Polar Regions.
Download or read book Algal Ecology written by and published by Academic Press. This book was released on 1996-06-03 with total page 781 pages. Available in PDF, EPUB and Kindle. Book excerpt: Algae are an important component of aquatic benthic ecosystems because they reflect the health of their environment through their density, abundance, and diversity. This comprehensive and authoritative text is divided into three sections to offer complete coverage of the discussion in this field. The first section introduces the locations of benthic algae in different ecosystems, like streams, large rivers, lakes, and other aquatic habitats. The second section is devoted to the various factors, both biotic and abiotic, that affect benthic freshwater algae. The final section of the book focuses on the role played by algae in a variety of complex freshwater ecosystems. As concern over environmental health escalates, the keystone and pivotal role played by algae is becoming more apparent. This volume in the Aquatic Ecology Series represents an important compilation of the latest research on the crucial niche occupied by algae in aquatic ecosystems. Presents algae as the important player in relation to environmental health Prepared by leading authorities in the field Includes comprehensive treatment of the functions of benthic algae as well as the factors that affect these important aquatic organisms Acts as an important reference for anyone interested in understanding and managing freshwater ecosystems
Download or read book Intermittent Rivers and Ephemeral Streams written by Thibault Datry and published by Academic Press. This book was released on 2017-07-11 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intermittent Rivers and Ephemeral Streams: Ecology and Management takes an internationally broad approach, seeking to compare and contrast findings across multiple continents, climates, flow regimes, and land uses to provide a complete and integrated perspective on the ecology of these ecosystems. Coupled with this, users will find a discussion of management approaches applicable in different regions that are illustrated with relevant case studies. In a readable and technically accurate style, the book utilizes logically framed chapters authored by experts in the field, allowing managers and policymakers to readily grasp ecological concepts and their application to specific situations. Provides up-to-date reviews of research findings and management strategies using international examples Explores themes and parallels across diverse sub-disciplines in ecology and water resource management utilizing a multidisciplinary and integrative approach Reveals the relevance of this scientific understanding to managers and policymakers
Download or read book Toxic Marine Phytoplankton written by Edna Granéli and published by New York : Elsevier. This book was released on 1990 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrated Assessment of Ecosystem Health written by K.M. Scow and published by CRC Press. This book was released on 2019-09-17 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new approach to ecosystem health is proactive. As a result, the scope of environmental studies is growing and the methods are evolving. Integrated Assessment of Ecosystem Health aggressively broadens the range of ecotoxicology to include its related fields. The book begins with John Cairns, Jr.'s predictions and recommendations for the futur
Download or read book River Ecology written by Brian A. Whitton and published by Univ of California Press. This book was released on 1975 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Algal Ecology written by R. Jan Stevenson and published by Academic Press. This book was released on 1996-05-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Algae are an important component of aquatic benthic ecosystems because they reflect the health of their environment through their density, abundance, and diversity. This comprehensive and authoritative text is divided into three sections to offer complete coverage of the discussion in this field. The first section introduces the locations of benthic algae in different ecosystems, like streams, large rivers, lakes, and other aquatic habitats. The second section is devoted to the various factors, both biotic and abiotic, that affect benthic freshwater algae. The final section of the book focuses on the role played by algae in a variety of complex freshwater ecosystems. As concern over environmental health escalates, the keystone and pivotal role played by algae is becoming more apparent. This volume in the Aquatic Ecology Series represents an important compilation of the latest research on the crucial niche occupied by algae in aquatic ecosystems. Key Features * Presents algae as the important player in relation to environmental health * Prepared by leading authorities in the field * Includes comprehensive treatment of the functions of benthic algae as well as the factors that affect these important aquatic organisms * Acts as an important reference for anyone interested in understanding and managing freshwater ecosystems
Download or read book Integrated Coastal Zone Management written by Erlend Moksness and published by John Wiley & Sons. This book was released on 2009-07-31 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal waters around the globe suffer from strain due to a widerange of human activities. The situation calls for a holisticapproach, combining expertise from nature and social science, toreach a balanced and sustainable development of the coastal zone. This important book comprises the proceedings of TheInternational Symposium on Integrated Coastal Zone Management,which took place in Arendal, Norway between 11-14 June 2007. The main objective of the Symposium was to present currentknowledge and to address issues on advice and management related tothe coastal zone. The major themes of papers included in this bookare: Coastal habitats Impacts on coastal systems Integrated Coastal Zone Management Coastal governance Comprising a huge wealth of information, this timely and welledited volume is essential reading for all those involved incoastal zone management around the globe. All libraries in researchestablishments and universities where fisheries and aquaticsciences are studied and taught will need copies of this importantvolume on their shelves.
Download or read book Plankton written by Iain Suthers and published by CSIRO PUBLISHING. This book was released on 2019-04-01 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Healthy waterways and oceans are essential for our increasingly urbanised world. Yet monitoring water quality in aquatic environments is a challenge, as it varies from hour to hour due to stormwater and currents. Being at the base of the aquatic food web and present in huge numbers, plankton are strongly influenced by changes in environment and provide an indication of water quality integrated over days and weeks. Plankton are the aquatic version of a canary in a coal mine. They are also vital for our existence, providing not only food for fish, seabirds, seals and sharks, but producing oxygen, cycling nutrients, processing pollutants, and removing carbon dioxide from our atmosphere. This Second Edition of Plankton is a fully updated introduction to the biology, ecology and identification of plankton and their use in monitoring water quality. It includes expanded, illustrated descriptions of all major groups of freshwater, coastal and marine phytoplankton and zooplankton and a new chapter on teaching science using plankton. Best practice methods for plankton sampling and monitoring programs are presented using case studies, along with explanations of how to analyse and interpret sampling data. Plankton is an invaluable reference for teachers and students, environmental managers, ecologists, estuary and catchment management committees, and coastal engineers.
Download or read book Environmental Monitoring and Remediation Using Microbiotechnology written by Tian Li and published by Frontiers Media SA. This book was released on 2022-05-31 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecosystems of California written by Harold Mooney and published by Univ of California Press. This book was released on 2016-01-19 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: This long-anticipated reference and sourcebook for CaliforniaÕs remarkable ecological abundance provides an integrated assessment of each major ecosystem typeÑits distribution, structure, function, and management. A comprehensive synthesis of our knowledge about this biologically diverse state, Ecosystems of California covers the state from oceans to mountaintops using multiple lenses: past and present, flora and fauna, aquatic and terrestrial, natural and managed. Each chapter evaluates natural processes for a specific ecosystem, describes drivers of change, and discusses how that ecosystem may be altered in the future. This book also explores the drivers of CaliforniaÕs ecological patterns and the history of the stateÕs various ecosystems, outlining how the challenges of climate change and invasive species and opportunities for regulation and stewardship could potentially affect the stateÕs ecosystems. The text explicitly incorporates both human impacts and conservation and restoration efforts and shows how ecosystems support human well-being. Edited by two esteemed ecosystem ecologists and with overviews by leading experts on each ecosystem, this definitive work will be indispensable for natural resource management and conservation professionals as well as for undergraduate or graduate students of CaliforniaÕs environment and curious naturalists.
