14,860 research outputs found
Estimating bird abundance : making methods work
No full textIn many bird monitoring Surveys, no attempt is made to estimate bird densities or abundance. instead, counts of one form or another are made, and these are assumed to correlate with bird density. Unless complete Counts Oil Sample plots are feasible, this approach can easily lead to false conclusions, because detectability of birds varies by species, habitat, observer and many other factors. Trends in time of counts often reflect trends in detectability, rather than trends in abundance. Conclusions are further compromised when surveys are conducted at unrepresentative sites. We consider how to avoid these problems. We give a brief description of distance sampling methods, which allow detectability to be estimated. We consider strategies to ease their implementation, to enhance their reliability, to adapt the methods for difficult species, and to deal with circumstances in which representative sampling is problematic. We also consider some of the common problems encountered, and suggest solutions.Peer reviewe
Bird species richness and diversity at montane Important Bird Area (IBA) sites in south-eastern Nigeria
No full textThe mountains of south-eastern Nigeria are a western extension of the Cameroon mountain range, which is classified as an endemic bird area (EBA). Unlike its eastern extension in Cameroon, most of the ornithological surveys in the western extension of the Cameroon highlands in Nigeria have produced only limited checklists and inventories. There is a clear need for quantitative baseline data so that conservation problems can be identified. Twenty line transects covering a total transect length of 28.8 km were used to survey five sites (Afi Mountain Wildlife Sanctuary, Oban and Okwangwo Division of Cross River National Park, Sankwala Mountains and Mbe Mountains) in the westernmost extension of the Cameroon Mountains EBA in south western Nigeria. Vegetation measurements were taken to control for the potential confounding effect of variation in vegetation density and structure on detectability of birds between sites. The 193 bird species recorded in Afi, 158 in Sankwala, 124 in Oban, 100 in Mbe and 73 in Okwangwo Division included most of the Cameroon highlands restricted range species. The results show that the mountains of south-eastern Nigeria are important parts of the Cameroon EBA, particularly the Afi Mountain Wildlife Sanctuary. However these sites are threatened by fire and livestock grazing on the hilltops, shifting agriculture on the hillsides and lowlands, and logging for timber in some parts, as well as wildlife hunting for bush meat.Peer reviewe
Cooperation bibliogram of bird flu
No full textThe published literature on Bird Flu, now a pandemic animal disease with a possible potential of evolving into a devastating human disease, was analysed primarily with respect of national and international cooperations and networks of authors and countries. The output of research-relevant papers is now around 150 per year and was less than 100 papers per year before 2003. The field is highly cooperative; nearly 90% of the articles have two or more authors. National extramural cooperation is around 50% since 1998, intramural cooperation shows a decreasing tendency and is now about 20%. Between 20% and 30% of the papers have been published in bi- or multinational cooperation. Observed and expected citation rates of international papers are twice as high as the citation rates of national papers.
47 countries are engaged in Bird Flu research, on top USA, followed by PEOPLES R CHINA, UK and JAPAN. These countries are also centers of country networks, but minor centers exist. An Asian local network with strong ties consisting of countries most affected by Bird Flu can be identified.. No strong direct connections exist between Europe and Asia; thus it seems necessary to intensify international cooperation.
Author network show interesting cluster structures which must be studied in detail
Evaluating the Effects of a Bird Strike Advisory System
No full textBird strikes have operational impacts and cause economic loss to the aviation industry. In the worst case, the damages resulting from bird strikes lead to crashes. The highest risk for bird strikes is in the area below 3000 ft and thus mainly in airport environments. Despite intense efforts from the airports in controlling the local bird populations, the number of bird strikes in these environments is still very high. Usually, Air Traffic Control is neither integrated into the process for reducing bird strikes nor do the controllers receive any precise information about the current bird traffic situation at the airport. For the project described in this paper, we assume a different situation: Air Traffic Control is provided with a tool informing the controller about the current and predicted bird traffic at the airport. Based on this information, the controller can decide to delay departing air traffic in order to avoid potential collisions between birds and the aircraft taking off. When implementing this procedure at an airport, we expect an increase in airport safety and, due to the delaying of traffic, a reduction in runway capacity. We hypothesize, that the Relations between the settings of the alerting systems and the effects on safety and capacity are deterministic. To test this hypothesis, we will perform
fast-time simulations under varying conditions. This paper describes the simulation environment created for this purpose
Dr Debbie Bird Rose
No full textAnthropologist and author, Dr Debbie Bird RoseDonated by David Ritchie, 22/06/2016Photographs of the Kenbi Handover 2016, the resolution of the 37 year Kenbi Land Claim over the Cox Peninsula. The handback, presided over by Prime Minister Malcolm Turnbull, took place at Mandorah on 21 June 2016 and was attended by many of the people who had worked on, or been involved in the landclaim processes
Oak bird guide
No full textTitle from PDF cover (viewed on February 28, 2017).This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Includes bibliographical references (page 26-28).Funding for this document was provided by the U.S. Fish and Wildlife Service through the Neotropical Migratory Migratory Bird Conservation Act.Mode of access: Internet from the Oregon Government Publications Collection.Text in English
Black Stork Down: Military Discourses in Bird Conservation in Malta
No full textTensions between Maltese hunters and bird conservation NGOs have intensified over the past decade. Conservation NGOs have become frustrated with the Maltese State for conceding to the hunter lobby and negotiating derogations from the European Union’s Bird Directive. Some NGOs have recently started to organize complex field-operations where volunteers are trained to patrol the landscape, operate drones and other surveillance technologies, detect illegalities, and lead police teams to arrest poachers. We describe the sophisticated military metaphors which conservation NGOs have developed to describe, guide and legitimize their efforts to the Maltese public and their fee-paying members. We also discuss why such groups might be inclined to adopt these metaphors. Finally, we suggest that anthropological studies of discourse could help understand delicate contexts such as this where conservation NGOs, hunting associations and the State have ended in political deadlock
Are we Prepared for Pandemic Bird Flu?
No full textIntroduction, Biology of Viruses by Kathryn Craven (Biology)
Historical Aspects of Epidemiology of Influenza David Adams (Health Science)
Modeling an Outbreak Dr. Sean Eastman (Mathematics)
Bird Flu\u27s Effects on Business and Information Technology Frank H Katz (Dept of Info Tech)
Health Care, what can we do? Pam Mahan (Nursing) and Rhonda Bevis (Dept of Respiratory Therapy)
Also Part of Interdisciplinary Bird Flu Group: Helen Taggart (Nursing
[A lamp in the shape of a bird with outstretched wings sits on a table in front of curtains, ca. 1971] [transparency] /
No full textTitle devised by cataloguer from caption list and information in publication: Australian decor.; Part of the Warren T. Harding and David C. Lorimer collection of interior design.; Similar image published in: Australian decor / Warren T. Harding [and] David C. Lorimer. Photos by David Beal. [Melbourne] : Nelson, [1971]; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.pic-vn3288995. Photographer David Beal was employed by the firm Decor Associates Pty. Ltd. in whom Warren T. Harding and David C. Lorimer were partners, to photograph homes and business premises they had decorated. Some of these photographs were used in the publication: Australian decor / Warren T. Harding [and] David C. Lorimer. Photos by David Beal. [Melbourne] : Nelson, [1971]
James H. Cathey Author of "Genesis of Lincoln"
No full textThis undated photograph showing James H. Cathey (1866-1929) is part of the William E. Bird Collection. On the back of the photograph is written “James H Cathey Senator from Jackson, Transylvania, Haywood, Swain. Author of ‘Genesis of Lincoln.’” William Ernest Bird (1890-1975) was born in the Qualla community of Jackson County, NC. Bird served Western Carolina University in various capacities during his long career. Bird’s roles at WCU included head of the English Department, Dean of Men, Acting President, and President. In 1963, he published The History of Western Carolina College: The Progress of an Idea. He was married to Myrtle Wells (1891-1983)
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