This book gathers papers presented and discussions held at the Conference on Wind Energy and Wildlife Impacts in Melbourne, Australia on 9th October 2012. The purpose of the conference was to bring together researchers, industry, consultants, regulators and Non-Government Organizations to share the results of studies into wind farm and wildlife investigations in Australia and New Zealand. The aim was to further networking and communication between these groups. The conference discussed key issues and areas for future investigation, with the intention of developing consistencies in research and management. Like the Conference, the book showcases current research and management in the field of wind farms and wildlife in Australia and New Zealand; establishes consistencies in research and management; and highlights areas in need of further examination. The papers in these Proceedings are presented in two session topics. The first covers "Investigations and assessment of new wind farms" and the second, "Monitoring, mitigation and offsets." The Proceedings then summarize the panel discussions held at the end of the conference. The themes include improving pre- and post-construction survey design; identifying key knowledge gaps and research priorities; uncertainties and errors in data sets and analysis; creating opportunities to share knowledge; and assessing cumulative impacts across multiple sites.

In Wild Winter, John D. Burns, bestselling author of The Last Hillwalker and Bothy Tales, sets out to rediscover Scotland's mountains, remote places and wildlife in the darkest and stormiest months. He traverses the country from the mouth of the River Ness to the Isle of Mull, from remote Sutherland to the Cairngorms, in search of rutting red deer, pupping seals, minke whales, beavers, pine martens, mountain hares and otters. In the midst of the fierce weather, John's travels reveal a habitat in crisis, and many of these wild creatures prove elusive as they cling on to life in the challenging Highland landscape. As John heads deeper into the winter, he notices the land fighting back with signs of regeneration. He finds lost bothies, old friendships and innovative rewilding projects, and - as Covid locks down the nation - reflects on what the outdoors means to hillwalkers, naturalists and the folk who make their home in the Highlands. Wild Winter is a reminder of the wonder of nature and the importance of caring for our environment. In his winter journey through the mountains and bothies of the Highlands, John finds adventure, humour and a deep sense of connection with this wild land.

This monograph is the result of eight years of bibliographical and field research concerning several behavioural ecology aspects of the Palaearctic falcons. For a while, this book grew along with "The Lanner falcon" published in 2015 and revised in 2017. In both books the main aim was to provide a clear overview of the biology and ecology of these species. In fact in the last 20 years, the number of publications on falcons has grown tremendously and, in parallel, also those belonging to the so-called "grey literature". The number of people involved is also increased by including both academics and nature lovers. Many previously published books emphasized identification, and offered little insights on the behavioural and ecological aspects of the species. Very often, the research on behavioural ecology remains closed within the confines of academic community. By contrast, a multitude of basic data is scattered in countless articles published in local magazines. Many falcon species are easy to observe and study (such as kestrels) but others are more rare and localized. In order to understand the survival strategies adopted by this group of avian predators, it is necessary not to lose sight of the overall picture. This book tries to explain the different survival strategies by examining, through a few essential chapters, some crucial aspects for all species. The first chapter provides information on the genus Falco, its genetics, evolution and morphological peculiarities. The other chapters deal with reproductive strategies, competition, exploitation of resources, dispersal patterns, communication and sociality. One of the main objectives of this book is to produce an accessible but scholarly curated source of reference. By understanding the most common species, it is possible to provide a working framework for rarer, and especially threatened, falcon species.

This book provides a snapshot of representative modeling analyses of coastal hypoxia and its effects. Hypoxia refers to conditions in the water column where dissolved oxygen falls below levels that can support most metazoan marine life (i.e., 2 mg O2 l-1). The number of hypoxic zones has been increasing at an exponential rate since the 1960s; there are currently more than 600 documented hypoxic zones in the estuarine and coastal waters worldwide. Hypoxia develops as a synergistic product of many physical and biological factors that affect the balance of dissolved oxygen in seawater, including temperature, solar radiation, wind, freshwater discharge, nutrient supply, and the production and decay of organic matter. A number of modeling approaches have been increasingly used in hypoxia research, along with the more traditional observational and experimental studies. Modeling is necessary because of rapidly changing coastal circulation and stratification patterns that affect hypoxia, the large spatial extent over which hypoxia develops, and limitations on our capabilities to directly measure hypoxia over large spatial and temporal scales. This book consists of 15 chapters that are broadly organized around three main topics: (1) Modeling of the physical controls on hypoxia, (2) Modeling of biogeochemical controls and feedbacks, and, (3) Modeling of the ecological effects of hypoxia. The final chapter is a synthesis chapter that draws generalities from the earlier chapters, highlights strengths and weaknesses of the current state-of-the-art modeling, and offers recommendations on future directions.

1 Aufgaben, Wirkungsweise und Bedeutung von Lagerungen.- 1.1 Funktionsweise.- 1.2 Geschichtlicher Ruckblick.- 1.3 Lagerarten.- 2 Tribologische Grundlagen und Kenngroessen der Schmierstoffe.- 2.1 Reibung und Verschleiss.- 2.1.1 Reibungsarten.- 2.1.2 Reibungszustande.- 2.1.3 Stribeck-Kurve.- 2.2 Schmierstoffe.- 2.2.1 Aufgaben und Einteilung der Schmierstoffe.- 2.2.1.1 Aufgaben.- 2.2.1.2 Einteilung.- 2.2.2 Kenngroessen von Schmierstoffen.- 2.2.2.1 Viskositat und Dichte.- 2.2.2.2 Thermische Kenngroessen von Schmierstoffen.- 2.2.3 Viskositatsklassifikation der Schmieroele.- 2.2.3.1 ISO-Normoele.- 2.2.3.2 SAE-Klassifikation.- 2.2.3.3 Weitere Motorenoel-Klassifikationen.- 2.2.4 Additive fur Motorenoele.- 2.2.5 Prufung von Motorenoelen, Gebrauchtoel-Eigenschaften.- 2.2.5.1 Motorenoelprufung.- 2.2.5.2 Veranderung von Motorenoelen im Gebrauch.- 3 Schmiersysteme von Verbrennungsmotoren.- 3.1 Funktion und Bestandteile von Schmiersystemen.- 3.2 Schmierstoffpumpen.- 3.3 Schmierstoffilter und Filtersysteme.- 3.3.1 Anforderungen.- 3.3.2 Filterbauarten.- 3.4 Schmieroelkuhlung.- 3.5 Steuerungs- und Sicherheitsbauteile.- 3.6 Schmiersysteme unterschiedlicher Motorentypen.- 3.6.1 PKW-Motoren.- 3.6.2 LKW- und kleinere Industrie-Motoren.- 3.6.3 Mittelschnell laufende Motoren.- 3.6.4 Motorradmotoren und schnell laufende Zweitaktmotoren.- 4 Die Lagerung von Verbrennungsmotoren und ihre Belastung.- 4.1 Dynamisch beanspruchte Gleitlager.- 4.2 Lager des Kurbeltriebes.- 4.2.1 Kolbenbolzenlager.- 4.2.2 Pleuellager.- 4.2.3 Grundlager.- 4.2.4 Weitere Lagerstellen.- 4.3 Kraftezerlegung.- 4.3.1 Kolbenbolzenlager.- 4.3.2 Pleuellager.- 4.3.3 Grundlager.- 4.4 Berechnungsmethoden bei Mehrzylindermotoren.- 5 Hydrodynamische Berechnung von Verbrennungsmotoren-Gleitlagern.- 5.1 Theoretische Grundlagen.- 5.1.1 Druckaufbau durch Tangentialbewegung (Keildruck).- 5.1.2 Druckaufbau durch Radialbewegung (Verdrangungsdruck).- 5.2 Berechnung der Wellenverlagerungsbahn.- 5.2.1 Ausgangspunkt und Berechnungsverfahren.- 5.2.2 Verfahren der uberlagerten Tragkrafte.- 5.3 Berechnung der Reibungsleistung.- 5.4 Berechnung der OEldurchsatzmenge.- 5.5 Warmebilanz.- 5.6 Maximaler Schmierfilmdruck.- 5.7 Umwandlung der raumfesten in koerperfeste Koordinaten.- 5.7.1 Grundlager.- 5.7.2 Pleuellager.- 5.7.3 Kolbenbolzenlager.- 5.8 Winkelgeschwindigkeiten der Lager eines Kurbeltriebes.- 5.9 EDV-Paket zur Auslegung dynamisch beanspruchter Radialgleitlager.- 5.10 Elastohydrodynamische Lagerberechnung - EHD.- 5.10.1 Vorteile und Aussagefahigkeit der elastohydrodynamischen Berechnung.- 5.10.2 Theoretische Grundlagen der EHD-Berechnungsmethode.- 5.10.3 Vergleich der Berechnungs- und Messergebnisse.- 6 Auslegung von Verbrennungsmotorenlagerungen.- 6.1 Auslegungskenngroessen und ihre Optimierung.- 6.1.1 Betriebszustand (Lagerbelastung).- 6.1.2 Lagerabmessungen.- 6.1.3 Schmierstoff und Schmierung.- 6.2 Optimierung der Einflussgroessen - Optimalauslegung.- 6.2.1 Bedeutung und Moeglichkeiten.- 6.2.2 Beurteilungsgroessen fur eine Optimalauslegung, ubliche Grenzwerte.- 6.2.3 Einfluss des relativen Lagerspieles.- 6.2.4 Einfluss von OElzufuhrungstemperatur und -druck.- 6.2.5 Art und Lage der Schmierstoffzufuhrung.- 6.2.6 Steifigkeit von Kurbelwelle, Lager und lagerumgebenden Bauteilen.- 6.2.7 Einfluss der Kurbelwellengestaltung (Massenausgleich).- 6.3 Schlussfolgerungen fur die Lagerauslegung aus der Anwendung von EDV-Programmpaketen.- 7 Konstruktive Gestaltung von Lagern.- 7.1 Lagerbauarten und konstruktive Details.- 7.1.1 Lagerbuchsen.- 7.1.2 Dunnwandige Lagerschalen mit und ohne Anlaufring.- 7.1.3 Schmierstoffzufuhrungselemente.- 7.1.4 Axiallager.- 7.2 Lagerschalenpresssitz.- 7.3 Grobgestaltung - Ruckwirkung der Lagerumgebung auf die Lagerparameter.- 7.4 Feingestaltung von Lagern.- 7.4.1 Kleines Pleuelauge.- 7.4.2 Kolbenbolzenaugen.- 7.4.3 Grosses Pleuelauge.- 7.4.4 Grundlager und Anordnung der OElbohrungen in den Kurbelwellen.- 7.4.5 Nockenwellenlager.- 7.4.6 Ausgleichswellenlager

This book focuses on the use of microorganisms in relation to agriculture, aquaculture and related fields, ranging from biofertilizers to poultry production. The latest innovations are also included to provide insights into the unlimited potentials of microorganisms in these areas.Individual chapters explore topics such as probiotics in poultry, biopurification of wastewater, converting agrowastes into value-added applications and products, rice cultivation, surfactants and bacteriocin as biopreservatives, bioplastics, crop productivity, biofloc, and the production of natural antibiotics. This volume will be of particular interest to scientists, policymakers and industrial practitioners working in the fields of agriculture, aquaculture and public health.

This book focuses on the vegetation history of the cultural landscape in southwestern Slovakia, which was established and adopted by mankind and has since constantly evolved in response to ongoing changes (in environmental conditions, biodiversity, land use, etc.). The book analyses four dominant ecosystems typical for the cultural landscape and affected by humans: woodlands, wetlands, grasslands and agricultural land. Each ecosystem is discussed in separate chapters. The chapters include (a) basic information, general aspects, development processes, trends and interpretations, (b) a published or non-published case study based on the author's own research, and (c) an extensive bibliography. A set of maps on the vegetation history and indices of geographical names and plants names serve to round out the coverage. The work provides an essential point of departure for describing the typical regional characteristics of the cultural landscape, with an eye to its future preservatio n.

A pacifist's timely and passionate manifesto addressing the issue of global warming.
Utopia, as Ratzlaff explains, is not some unattainable oasis but rather a world without war and with a balanced global habitat that can sustain future generations. " R]ank and file Americans need to be able to comprehend what global warming is all about," the author writes, "in order to grasp what will happen if we fail to take immediate steps to combat it." The book is not a scientific treatise bogged down with academic language, but rather a pacifist's simple approach to solving one of the world's most difficult dilemmas. Employing a minimum of hard data to explore melting ice caps, rising sea levels, changing weather patterns and ocean currents, Ratzlaff effectively illustrates the cause-and-effect relationship between human activity and the planet's well-being. While Al Gore answered the hows and whys of global warming in "An Inconvenient Truth, " Ratzlaff illustrates the imminent need for vast governmental and political changes, and he explains the consequences of ignoring the obvious threat to our planet. The author states that one of the biggest problems with the current approach to global warming is the tendency of advocates to ignore the significant role of population growth. Additionally, at the roots of global warming lay nationalism, religious wars and the military-industrial complex - Ratzlaff outright blames governments and corporations for the current situation. After demonstrating the various successes of the United Nations in heading off global conflicts, the author concludes that the UN is the only organization capable of becoming a fully empowered international governing body. Yet handcuffed by its current structure, it can do nothing more than cast environmental resolutions that are often ignored. Unlike other books that attempt to tackle major global issues, rather than pointing out the problems and offering no solutions, Ratzlaff rounds out each of the seven steps with definitive alternatives in his "If I Were President" summaries.
A thorough yet easy-to-comprehend take on global warming.
- Kirkus Review

Historically, it is the land of the bison. But the land across which these powerful herds once thundered has been transformed. We know it today by such names as Montana, Wyoming, Dakota, western Iowa, and Nebraska--but it is really buffalo country, the land of the big sky rivers. This book is a tale of two rivers, a history of the majestic Missouri and how it was once wedded to the Yellowstone. Though quite different today--one dammed into reservoirs, the other unregulated with a semblance of wildness--they were once linked ecologically, geographically, and historically. Then in the twentieth century, Euro-Americans dismantled many of these connections and attempted to uncouple the streams. Viewing the rivers and their surrounding lands as a living system, Robert Kelley Schneiders focuses on four components within the Upper Missouri bioregion--the Missouri River valley, the Yellowstone River valley, Homo sapiens, and bison--to show the significance of their interaction over the past two hundred years. To frame his story, Schneiders goes back to the nineteenth-century journals of fur traders and settlers, and in the record of flora, fauna, floods, and human activity he finds evidence of rapid and disruptive change. Bison once had the greatest influence on the land, and Schneiders depicts an original bison and Indian trail network on which were overlaid the first forts and towns and then the railroads, highways, and reservoirs that reconfigured the region forever. Schneiders explains how these geographical constructs interacted with larger demographic and economic trends in the twentiety-century West, as dams and their resultant reservoirs enhanced the federal presence in the Dakotas andeastern Montana. He describes human encroachment on the rivers and tells why the Corps of Engineers dammed the Missouri but spared the Yellowstone. The engineers and their backers have so completely engineered the Missouri that few people today think of it as anything other than water. But we can reestablish our bonds to the river if we decide to let it flow once again, argues Schneiders. Removing the dams on the Missouri is the first step toward reasserting localism and grassroots democracy. In what was once buffalo country, a dormant ecology awaits rebirth. A major work of environmental history, "Big Sky Rivers offers a challenging vision for the future of the Upper Missouri bioregion.

"Diagnosing Wild Species Harvest" bridges gaps of knowledge fragmented among scientific disciplines as it addresses this multifaceted phenomenon that is simultaneously global and local. The authors emphasize the interwoven nature of issues specific to the ecological, economic, and socio-cultural realms of wild species harvest.

The book presents the diagnosing wild species harvest procedure as a universal approach that integrates seven thematic perspectives to harvest systems: resource dynamics, costs and benefits, management, governance, knowledge, spatiality, and legacies. When analyzed, these themes help to build a holistic understanding of this globally important phenomenon. Scholars, professionals and students in various fields related to natural resources will find the book a valuable resource.

Wild species form important resources for people worldwide, and their harvest is a major driver of ecosystem change. Tropical forests regions, including Amazonia, are among those parts of the world where wild species are particularly important for people's livelihoods and larger economies. This book draws on tangible experiences from Amazonia, presented in lively narratives intermingling scientific information with stories of the people engaged in harvest and management of wild species. These stories are linked to relevant theory of wild species harvest and wider discussions on conservation, development, and the global quest of sustainability.
Includes research and report-style narratives describing a wide variety of concrete casesAddresses wild species harvest from a holistic perspective including ecological, economic and socio-cultural issues, not limiting the scope to a single type of resourcesProvides theoretical treatment of wild species harvest worldwide, with special emphasis in the most recent scientific understanding on the biodiversity of the Amazonian lowland regionPresents an objective viewpoint, noting problems the harvest may cause as well as its potential to contribute both to biodiversity conservation and to local livelihoods and national economiesCoherent, easily followed structure and abundant illustrations help the reader absorb central messages

Today, the East African state of Tanzania is renowned for wildlife preserves such as the Serengeti National Park, the Ngorongoro Conservation Area, and the Selous Game Reserve. Yet few know that most of these initiatives emerged from decades of German colonial rule. This book gives the first full account of Tanzanian wildlife conservation up until World War I, focusing upon elephant hunting and the ivory trade as vital factors in a shift from exploitation to preservation that increasingly excluded indigenous Africans. Analyzing the formative interactions between colonial governance and the natural world, The Nature of German Imperialism situates East African wildlife policies within the global emergence of conservationist sensibilities around 1900.

Adaptive management is an approach to managing social-ecological systems that fosters learning about the systems being managed and remains at the forefront of environmental management nearly 40 years after its original conception. Adaptive management persists because it allows action despite uncertainty, and uncertainty is reduced when learning occurs during the management process. Often termed "learning by doing", the allure of this management approach has entrenched the concept widely in agency direction and statutory mandates across the globe. This exceptional volume is a collection of essays on the past, present and future of adaptive management written by prominent authors with long experience in developing, implementing, and assessing adaptive management. Moving forward, the book provides policymakers, managers and scientists a powerful tool for managing for resilience in the face of uncertainty.

The socio-economic activities due to world development are promoting increasing pressures on land, creating competition and conflicts, resulting in suboptimal use of resources. Integrated planning and management of land resources is a top subject of Agenda 21 (managed by FAO), which deals with the cross-sectoral aspects of decision-making for the sustainable use and development of natural resources. This is essential for life-support systems and its productive capacity. In this context, there is a need to find new strategies for sustainable development that links social and economic progress with environmental protection and enhancement. Electrokinetic transport processes (EK) uses a low-level direct current as the "cleaning agent". EK has been applied to the remediation of polluted soils and other contaminated matrices. It also shows a great potential to be used in different fields, as in saline soil restoration, nutrients recovery from wastes or repair and maintenance of building structures. EK may be an integrated approach for new strategies aiming at sustainable development and to support waste strategies, with worldwide interest. EK can also be coupled with phytoremediation and integrated with nanotechnology, enlarging the scope of its application. The conciliation of the EK in the recovery of secondary resources, remediation and conservation is a multidisciplinary novel approach that opens new technical possibilities for waste minimization, through upgrading of particulate waste products and the recovery of secondary resources for industrial, agricultural or social use.

This compact and elegant work (equally fitting for both academic as well as the trade audiences) provides a readily accessible and highly readable overview of Bhutan's unique opportunities and challenges; all her prominent environmental legislation, regulatory statutes, ecological customs and practices, both in historic and contemporary terms. At the same time, Bionomics places the ecological context, including a section on animal rights in Bhutan, within the nation's Buddhist spiritual and ethical setting. Historic contextualization accents the book's rich accounting of every national park and scientific reserve, as well as providing up-to-the-minute climate-change related hurdles for the country. Merging the interdisciplinary sciences, engineering and humanities data in a compelling up-to-date portrait of the country, the authors have presented this dramatic compendium against the backdrop of an urgent, global ecological time-frame. It thus becomes clear that the articulated stakes for Bhutan, like her neighboring Himalayan and Indian sub-continental countries (China, India, Bangladesh and Myanmar) are immense, as the Anthropocene epoch unfolds, affecting every living being across the planet. Because Bhutan's two most rewarding revenue streams derive from the sale of hydro-electric power and from tourism, the complexities of modern pressures facing a nation that prides herself on maintaining traditional customs in what has been a uniquely isolated nation are acute.

A naturalist on Montana's academic frontier, passionate conservationist Morton J. Elrod was instrumental in establishing the Department of Biology at the University of Montana, as well as Glacier National Park and the National Bison Range. In Montana's Pioneer Naturalist, the first in-depth assessment of Elrod's career, George M. Dennison reveals how one man helped to shape the scholarly study of nature and its institutionalization in the West at the turn of the century. Elrod moved to Missoula in 1897, just four years after the state university's founding, and participated in virtually every aspect of university life for almost forty years. To reveal the depths of this pioneer scientist's influence on the growth of his university, his state, and the academic fields he worked in, author George M. Dennison delves into state and university archives, including Elrod's personal papers. Although Elrod was an active participant in bison conservation and the growth of the National Park Naturalist Service, much of his work focused on Flathead Lake, where he surveyed local life forms and initiated the university's biological station - one of the first of its kind in the United States. Yet at heart Elrod was an educator who desired to foster in his students a ""love of nature,"" which, he said, ""should give health to any one, and supply knowledge of greatest value, either to the individual or to society, or to both."" In this biography of a prominent scientist now almost forgotten, Dennison - longtime president of the University of Montana - demonstrates how Elrod's scholarship and philosophy regarding science and nature made him one of Montana's most distinguished naturalists, conservationists, and educators.

With the rapid growth of global industrialization, there has been substantial consumption of fossil fuels such as coal, petroleum, and natural gas along with growing carbon dioxide emissions. Unprecedented environmental and ecological crisis clouded the world. Fortunately, the Climate Conference in Copenhagen signaled hope amid the sluggish global economic recovery. Countries worldwide have been braced for developing their scientific and industrial strategies in the era of post financial crisis with a green and low-carbon philosophy. In 2008, the UN unveiled a plan for green politics and green economy, which is well-received and carried out by countries worldwide. China s 30-year rapid economic development has attracted worldwide attention. However, how to develop in a sustainable manner when faced with acute contradictions between economic growth, resources and environment has posed great challenges to China. Therefore, it is of great significance for us to speed up the study of green development and find a rational growth model. This study is completed by Prof. Li Xiaoxi and the dedication of other leading thinkers in economics, management, environment and resources together with the help of China Economic Monitoring and Analysis Center (CEMA)."

The #1 New York Times bestseller by Time's 2019 Person of the Year "Greta Thunberg is already one of our planet's greatest advocates." -Barack Obama The groundbreaking speeches of Greta Thunberg, the young climate activist who has become the voice of a generation, including her historic address to the United Nations In August 2018 a fifteen-year-old Swedish girl, Greta Thunberg, decided not to go to school one day in order to protest the climate crisis. Her actions sparked a global movement, inspiring millions of students to go on strike for our planet, forcing governments to listen, and earning her a Nobel Peace Prize nomination. No One Is Too Small to Make A Difference brings you Greta in her own words, for the first time. Collecting her speeches that have made history across the globe, from the United Nations to Capitol Hill and mass street protests, her book is a rallying cry for why we must all wake up and fight to protect the living planet, no matter how powerless we feel. Our future depends upon it.

The Most Important Animal of All is an award-winning picture book about seven super-animals - important keystone species - beautifully illustrated by Hannah Bailey and endorsed by The British Ecological Society. A class is learning all about animals and their teacher challenges them to decide which is the most important animal of all. Seven children champion a different animal for the top spot. Is it... BEES as master pollinators BATS as night-time predators and pollinators ELEPHANTS who shape their landscapes and spread seeds BEAVERS who create watery habitats TIGERS who keep their food web in balance SHARKS who keep our oceans healthy and increase biodiversity KRILL as food for many whales and sea creatures There is lots of information about each animals, as well as other keystone species, plus photographs to see them up close and in their habitats. This is a positive and gentle primer for young children from 5 years old about the issues of habitat loss, endangered species and climate change. "Only if we understand, will we care. Only if we care, will we help. Only if we help, shall all be saved" - Dr Jane Goodall.

This book is about the varied range of emerging applications using specially trained detection dogs to monitor and protect aquatic ecosystems, animals, plants and related resources. Featuring contributions from those at the forefront of converging disciplines ranging from canine training, ecological and biological monitoring, water resource management, law enforcement, and eco-toxicology, it addresses everyone already immersed in these or related fields, and anyone seeking to gain a broader understanding of them. Chapters cover several common themes including monitoring presence/absence through biological and ecological surveys; maintaining and evaluating water quality; law enforcement and anti-poaching initiatives; public education, awareness and compliance; standards and best practices; optimal uses of dogs in relation to and in conjunction with other available tools and pragmatic considerations for selecting and working with dogs and handlers. The aim of the book is to stimulate new ideas, promote the sharing and dissemination of information and findings - and, ideally, to catalyze new and innovative partnerships, to strengthen the preservation and conservation of our aquatic heritage.