Trends and Drivers of Change in Diving Ducks PDF Download

Author: Mikael Kilpi
Publisher:
ISBN: 9789289339797
Category :
Languages : en
Pages :

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Author: Mikael Kilpi
Publisher: Nordic Council of Ministers
ISBN: 9289339810
Category :
Languages : en
Pages : 59

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This report addresses changes in population size in five species of diving ducks breeding and wintering in the Baltic Sea. Declines in breeding Greater Scaup, Eider and Velvet Scoters on the Baltic coast are verified. Long-tailed Ducks and Eiders have declined in winter. Breeding Eiders have declined in Norway. Monitoring programs in all Nordic countries are partly inadequate for detecting changes in numbers of birds both in winter and during breeding, but large-scale trends appear reliable. The reasons for the declines observed are largely unknown. For breeding Eiders in the northern part of the Baltic Sea a change in predation regimes on the breeding islands may be important. If the negative trends are to be stopped, a deeper understanding of the drivers involved and better knowledge about the ecological status of the Baltic Sea food webs utilized by the diving ducks are needed.

Author:
Publisher:
ISBN: 9789289339803
Category :
Languages : en
Pages :

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Author: Pauline Snoeijs-Leijonmalm
Publisher: Springer Science & Business Media
ISBN: 9400706685
Category : Science
Languages : en
Pages : 683

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This is the first comprehensive science-based textbook on the biology and ecology of the Baltic Sea, one of the world’s largest brackish water bodies. The aim of this book is to provide students and other readers with knowledge about the conditions for life in brackish water, the functioning of the Baltic Sea ecosystem and its environmental problems and management. It highlights biological variation along the unique environmental gradients of the brackish Baltic Sea Area (the Baltic Sea, Belt Sea and Kattegat), especially those in salinity and climate. pt;font-family:"Arial","sans-serif"; color:#262626">The first part of the book presents the challenges for life processes and ecosystem dynamics that result from the Baltic Sea’s highly variable recent geological history and geographical isolation. The second part explains interactions between organisms and their environment, including biogeochemical cycles, patterns of biodiversity, genetic diversity and evolution, biological invasions and physiological adaptations. In the third part, the subsystems of the Baltic Sea ecosystem – the pelagic zone, the sea ice, the deep soft sea beds, the phytobenthic zone, the sandy coasts, and estuaries and coastal lagoons – are treated in detail with respect to the structure and function of communities and habitats and consequences of natural and anthropogenic constraints, such as climate change, discharges of nutrients and hazardous substances. Finally, the fourth part of the book discusses monitoring and ecosystem-based management to deal with contemporary and emerging threats to the ecosystem’s health.

Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251319634
Category : Political Science
Languages : en
Pages : 63

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The Europe and Central Asia Regional Synthesis for The State of the World’s Biodiversity for Food and Agriculture summarizes the state of biodiversity for food and agriculture in the region, based largely on information provided in nineteen country reports submitted to FAO as part of the reporting process for the report on The State of the World’s Biodiversity for Food and Agriculture. Biodiversity for food and agriculture is the diversity of plants, animals and micro-organisms at genetic, species and ecosystem levels, present in and around crop, livestock, forest and aquatic production systems. It is essential to the structure, functions and processes of these systems, to livelihoods and food security, and to the supply of a wide range of ecosystem services. It has been managed or influenced by farmers, livestock keepers, forest dwellers, fish farmers and fisherfolk for hundreds of generations. The report was originally prepared as supporting documentation for an informal regional consultation on the state of Europe and Central Asia’s biodiversity for food and agriculture, held in Bonn, Germany, in April 2016. It was later revised based on feedback received from the participants of the informal consultation. It provides a description of the drivers of change affecting the region’s biodiversity for food and agriculture and of its current status and trends. It also discusses the state of efforts to promote the sustainable use and conservation of biodiversity for food and agriculture in the region, including through the development of supporting policies, legal frameworks, institutions and capacities.

Author: Gerald Mayr
Publisher: Springer Nature
ISBN: 3030876454
Category : Science
Languages : en
Pages : 247

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This second, completely revised edition of “Paleogene fossil birds” gives a comprehensive, updated overview of the avian fossil record from a geological period that lasted from the end-Cretaceous mass extinction event (66 million years ago) to the end of the Oligocene epoch (23 mya). Paleogene avifaunas are highly diversified and not only feature unusual archaic groups without close living relatives but also offer unique insights into the evolution and biogeographic history of extant birds. The main body of the book constitutes an in-depth survey of the known diversity of Paleogene avifaunas. The reader is introduced into basic skeletal features of extinct avian taxa, with these fossil forms being placed into a phylogenetic context in the light of current hypotheses on the interrelationships of extant birds. The geographical and temporal occurrences of the various fossil groups are outlined and their evolutionary significance is discussed. Concluding sections inform more general aspects of Paleogene avifaunas, such as possible causes of major faunal changes. In addition to being a reference work for the early evolution of modern birds from a paleornithological perspective, the present work also enables researchers in other fields of vertebrate paleontology to gain an improved understanding of Paleogene ecosystems. Numerous color photos of representative specimens furthermore make the new edition attractive to a wider audience interested in the avian fossil record.

Author: Clarence Cottam
Publisher:
ISBN:
Category :
Languages : en
Pages : 506

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Author: Vaughan Evans
Publisher: AMACOM
ISBN: 0814434126
Category : Business & Economics
Languages : en
Pages : 315

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The Standout Business Plan is an immensely practical and readable guide that shows you how to create a business plan that not only speaks directly to investors and lenders but also makes it easy for them to say yes. At the beginning of every successful business is a well-thought-out and exceptionally prepared business plan that was written with one audience in mind--investors. However, too many budding entrepreneurs have written their business’s bible with a focus on details most important to managers or employees or even themselves, completely avoiding the questions most crucial to those who determine the fate of the business’s genesis…its potential backers. Renowned leadership expert Brian Tracy and business strategy consultant Vaughan Evans share case studies and examples of both what to do and what not to do when developing a plan for your business. In The Standout Business Plan, Tracy and Evans reveal how to: Include the vital information backers need, while leaving out extraneous fillers that gets in the way Address key factors such as market demand, competition, and strategy Spell out the essence of your business proposition Outline resources and financial forecasts Assess risk from the backer's perspective Evaluate and improve the plan to ensure its success Your business plan is too important to not get exactly right from the beginning. With the easy-to-follow guidance in The Standout Business Plan, now anyone can present a clear, concise, and convincing case that will win them the funding they need to succeed.

Author: Stephen T. Garnett
Publisher: CSIRO PUBLISHING
ISBN: 1486311911
Category : Nature
Languages : en
Pages : 817

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The Action Plan for Australian Birds 2020 is the most comprehensive review of the status of Australia's avifauna ever attempted. The latest in a series of action plans for Australian birds that have been produced every decade since 1992, it is also the largest. The accounts in this plan have been authored by more than 300 of the most knowledgeable bird experts in the country, and feature far more detail than any of the earlier plans. This volume also includes accounts of over 60 taxa that are no longer considered threatened, mainly thanks to sustained conservation action over many decades. This extensive book covers key themes that have emerged in the last decade, including the increasing impact of climate change as a threatening process, most obviously in Queensland's tropical rainforests where many birds are being pushed up the mountains. However, the effects are also indirect, as happened in the catastrophic fires of 2019/20. Many of the newly listed birds are subspecies confined to Kangaroo Island, where fire destroyed over half the population. But there are good news stories too, especially on islands where there have been spectacular successes with predator control. Such uplifting results demonstrate that when action plans are followed by action on the ground, threatened species can indeed be recovered and threats alleviated.

Author: OECD
Publisher: OECD Publishing
ISBN: 9264226885
Category :
Languages : en
Pages : 236

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This report evaluates Spain's progress towards sustainable development and green growth, with a focus on biodiversity and the environmental performance of the private sector.