scholarly journals The Common Buzzard Buteo buteo Population in a Changing Environment, Central Poland as a Case Study

Diversity ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 35 ◽  
Author(s):  
Jakub Gryz ◽  
Dagny Krauze-Gryz
Keyword(s):  
Diet Composition ◽  
Stand Structure ◽  
Small Rodent ◽  
Breeding Parameters ◽  
Bird Of Prey ◽  
Common Buzzard ◽  
The Past ◽  
Central Poland ◽  
The Common

Common buzzard is the most abundant bird of prey in Europe, and its population has undergone serious changes. In this study, we focused on a population in Central Poland (study area 105 km2, forests around 24 km2, seven forest complexes) to analyze how certain environmental factors influenced population abundance, breeding parameters, and diet composition. The study was undertaken from 2011 to 2018, and the results were compared with data from two study periods (1982–1992; 2001–2003). Current population density was 3.5 pairs/10 km2 of total area and 14.3 pairs/10 km2 of forested area, it was negatively correlated to the abundance of northern goshawk, and it grew in the last few decades. Mammals were dominant prey (72.6% prey items, 38.6% of biomass), but their share in diet changed following rodent availability. A decrease in the share of voles was recorded, reflecting drop in their abundance and dampening of abundance cycles. Breeding parameters were similar to those in the past, and the number of offspring depended on small rodent availability. Buzzards adapted to changes in the stand structure, i.e., when share of Scots pine decreased, they chose it as their nesting tree less frequently. All this showed that buzzard is a very adaptable species.

scholarly journals Características Enunciativas Presentes em Textos Históricos de Divulgação Científica e Possíveis Contribuições ao Ensino

2020 ◽  
Vol 21 ◽  
pp. 103-123
Author(s):  
Filipe Silva de Oliveira ◽  
Edson José Wartha
Keyword(s):  
Science Teaching ◽  
Historical Narrative ◽  
Historical Narratives ◽  
Historical Texts ◽  
The Past ◽  
Teaching History ◽  
History Of ◽  
The Common ◽  
Brazilian Science

ResumoHistória da Ciência e Ensino de Ciências são áreas do conhecimento com possibilidades de interface anunciadas e investigadas na atualidade, desse modo, produzindo conhecimento a comunidade de pesquisa interessada em encontrar caminhos didáticos para a sala de aula. Por meio de Narrativas Históricas (NHs), Estudo de Caso e sistematicamente Sequências Didáticas, essa interface tem sido desenvolvida. O estudo de textos históricos de divulgação científica auxilia a compreender a divulgação do conhecimento científico para o público comum no passado, acredita-se ser possível o uso desses textos na construção de materiais didáticos como Narrativas Históricas (NHs) e Estudo de Caso. Neste artigo discutimos características enunciadas em textos de divulgação científica escritos por um divulgador da ciência brasileiro, relacionando essas características na construção de Narrativas Históricas que venham a utilizar os textos desse divulgador. As características são conteúdo temático, composição do enunciado e estilo verbal. Essas características auxiliam na compreensão dos textos desse divulgador no processo de construção das Narrativas Históricas.Palavras-chave: Ensino de Ciências. História da Ciência. Divulgação Científica. Narrativa Histórica. AbstractHistory of Science and Science Teaching are areas of knowledge with possibilities of interface announced and investigated today, thus, producing knowledge to the research community interested in finding didactic paths for the classroom.  Through Historical Narratives (NHs) Case Study and systematically Instructional Sequences, this interface been developed. The study of historical texts of scientific popularization assist to understand the popularization scientific knowledge to the common public in the past, it is believed that the use of these is possible in the construction of instruction materials such as Historical Narratives (NHs) and Case Study. In this paper we discuss characteristics stated in scientific popularization texts written by a Brazilian science disseminator, relating these characteristics in the construction of Historical Narratives that come to use the texts of disseminator. Features are thematic content, statement composition and verbal style. These characteristics assist in the understand of the texts of this disseminator in the process of construction the Historical Narratives.Keywords: Science Teaching. History of Science. Scientific Popularization. Historical Narrative.

scholarly journals Pigeon and Poultry Breeders, Friends or Enemies of the Northern Goshawk Accipiter gentilis? A Long-Term Study of a Population in Central Poland

Animals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 141 ◽  
Author(s):  
Jakub Gryz ◽  
Dagny Krauze-Gryz
Keyword(s):  
Diet Composition ◽  
Prey Availability ◽  
Published Data ◽  
Current Time ◽  
Breeding Parameters ◽  
Small Game ◽  
Central Poland ◽  
Long Term Study ◽  
Forest Mosaic

In this study, we focused on a goshawk population in central Poland (study area 105 km2,forests 24 km2, seven small forest complexes) which was monitored long-term (with high densitiesrecorded in the 1980s of 16.3 pairs/100 km2 despite persecution by farmers) to analyse howenvironmental factors (prey availability and changes in the forest structure) influenced populationabundance, breeding parameters, and diet composition. The study was undertaken from 2011–2018,and the results were compared with published data from two previous study periods (1982–1992and 2001–2003). The number of breeding pairs dropped from 17.1 to 8.0; the breeding success wasaround 75% in all study periods. The selection of nesting trees followed the changes in stand speciesand age structure. More nesting attempts per one nest were recorded in the current time period (1.7 vs.1.1), which probably reflected lower anthropopressure (i.e., no cases of persecution were recordedin this study). Diet composition seemed to follow changes in the prey availability: The share ofdomestic pigeons and poultry (the main prey in the 1980s) as well as small game dropped, whilethe share of Eurasian jay and wood pigeon increased. Our studies suggested that anthropogenicfood (poultry and domestic pigeons) played a key role for the goshawk population in thetransformed habitats of the field and forest mosaic.

Navigating Uncertain Waters : Geographies of Water and Conflict, Shifting Terms and Debates

2004 ◽  
Author(s):  
Leila M. Harris
Keyword(s):  
Water Resources ◽  
Middle East ◽  
Critical Assessment ◽  
War And Peace ◽  
The Past ◽  
Water Wars ◽  
The Common ◽  
International Water ◽  
Critical Resources

The debate over whether or not future water scarcities will contribute to heightened conflict and violent war is far from over. In the past decade, there has been a proliferation of books with titles such as Water Wars: Coming Conflicts in the Middle East, Rivers of Discord: International Water Disputes in the Middle East, and Rivers of Fire: The Conflict over Water in the Middle East, with many more undoubtedly planned or in press. This chapter serves as a critical assessment of some of the major themes of this literature and also contributes several concepts and case study examples in order to shift and reframe some of the common bases and assumptions of ongoing discussions. In particular, the concept of scale is used to argue for a broadened notion of “sociopolitical conflict” associated with water resources to overcome weaknesses inherent to dichotomous state-centered understandings of “war” and “peace.” Given the changing nature of contemporary conflicts, “peace” cannot justifiably be understood as the absence of war. Many people, livelihoods, places, and economies are marked by diffuse and persistent conflict. Whether disruptions take the form of gang warfare in cities, the frequency of preventable deaths caused by lack of access to basic needs, or conflict over access to and sharing of critical resources, times of “peace” are notably marked by political instability, death, vulnerability, and other features commonly associated with warfare. Further, given interconnections between environments, people, and places, conflicts at specific sites cannot be abstracted from situations and conditions at other locations and scales. Even if a state is not at “war,” situations of resource use or access may still be marked in important ways by sociopolitical conflict, either past conflicts or ongoing conflicts across other sites and scales. In short, narrow attention to stateto- state warfare detracts from the complexity of relationships between the changing geographies of water resources and sociopolitical conflicts. A multiscalar perspective that highlights manifold and interrelated geographies of “water and conflict” across historical and geographical scales and among multiple sites and actors brings this into relief.

scholarly journals Variation in the diet and breeding biology of the Common Barn-owl (Tyto alba) in a demographic cycle of Common Vole (Microtus arvalis) between two outbreaks

2020 ◽  
Vol 28 (2) ◽  
pp. 37-65
Author(s):  
Adrienn Horváth ◽  
László Bank ◽  
Győző F. Horváth
Keyword(s):  
Clutch Size ◽  
Small Mammal ◽  
Diet Composition ◽  
Common Vole ◽  
Barn Owl ◽  
Early Spring ◽  
Tyto Alba ◽  
Microtus Arvalis ◽  
Breeding Parameters ◽  
The Common

AbstractIn the present study, we analysed the variation of breeding parameters and the diet composition of the Common Barn-owl (Tyto alba) in three different demographic phases of the Common Vole (Microtus arvalis) in a complete population cycle between two outbreaks. The study was conducted in the south-eastern part of the Transdanubian region in South Hungary. For the analysis, we used data of 81 randomly selected first clutches from 2015 to 2019, a time period which represented a full demographic cycle of the Common Vole after the 2014 outbreak with an exceptionally high peak. We tested the impact of prey abundance and diversity of diet composition as continuous predictors as well as the demographic phase of Common Vole and the mesoregion as categorical explanatory variables on the measured reproductive outputs as response variables using Generalized Linear Models (GLM). Considering the breeding parameters, the number of fledglings, and fledging and reproductive success were significantly higher in the increase phase than during the vole crash phase. Based on GLM models, our results demonstrated that the clutch size of the Common Barn-owl is determined ultimately by the availability and consumption rate of the Common Vole as main prey, while other small mammal prey categories did not affect the clutch size. These results support the finding that the clutch size of vole-eating raptors and owls, which begin breeding periods in early spring predicts the vole abundance in this early spring period. Considering the other investigated small mammal prey groups, the alternative prey role was confirmed only in case of the Murid rodent prey categories (Apodemus spp., Muridae).

SHAPING A EUROPEAN PRODUCTION PLATFORM – CASE STUDY

2020 ◽  
Vol 21 (2) ◽  
pp. 153-164
Author(s):  
Štefan Kassay
Keyword(s):  
Production Process ◽  
International Business ◽  
Quarter Century ◽  
The Past ◽  
Production Processes ◽  
Production Platform ◽  
Production Practice ◽  
The Common ◽  
European Production

The purpose of the article is to present the concept and practice of implementing the idea regarding the construction and functioning of the European platform for the production process, which is an example of international business. The main efforts associated with the process of creating such a platform focus on spreading the good name of the country abroad. This is possible in connection with increasing the efficiency of enterprises and bringing the idea of innovation closer to creating a symbiosis of science with production practice. This leads to an increase in the economic strength of the countries involved. The idea of a “common European production platform” was created in the specific conditions of production processes in I.D.C. Holding, S.A. in Slovakia, which has a branch in Poland (I.D.C. Polonia, Krakow). The socio-economic results achieved by the holding over the past quarter-century have influenced the formulation of the question – how and with what assumptions is it possible to create a European production platform. Such a question becomes the main problem that needs to be solved and the question posed in this article requires an answer related to the development of the following issues: − company profile; − business achievements I.D.C; − basic conditions and ideas of the common platform. An indication of the possibilities to implement the above is provided in the article.

scholarly journals Landscape-related variation in the diet composition of the common buzzard (Buteo buteo) in Belarus

2016 ◽  
Vol 10 (1) ◽  
pp. 65-74 ◽  
Author(s):  
Anna A. Sidorovich ◽  
Vladimir V. Ivanovskij ◽  
Vadim E. Sidorovich ◽  
Irina A. Solovej
Keyword(s):  
Habitat Structure ◽  
Diet Composition ◽  
Small Rodents ◽  
Forest Habitat ◽  
Predator Prey ◽  
Food Items ◽  
Common Buzzard ◽  
Buteo Buteo ◽  
The Common ◽  
Food Niche

Abstract We examined common buzzard (Buteo buteo) feeding patterns in landscapes with different habitat structure in Belarus. A total of 561 pellets and prey remains were sampled in 1998-2012 from which 1065 prey and other food items were identified. Effects of habitat structure on buzzard diet composition were investigated using correlation analysis. The most abundant group in buzzards’ diets were small rodents (49-80% of the biomass consumed), followed by other mammals and birds. Reptiles, anurans, fish and invertebrates constituted the rest. Proportions of all food items varied greatly between landscapes. The mean-weighted body mass of vertebrate prey hunted by common buzzards in different landscapes ranged from 107 to 244 g, constituting on average 180 g. Among small rodents, voles of the genus Microtus were hunted selectively. The food niche breadth was directly proportional to the amount of forest habitat. With increasing amount of forest habitat, the proportion of Microtus voles in buzzards’ diets decreased and the proportions of other food items grew. These findings confirm the majority of previous results indicating feeding opportunism of the common buzzard. Our investigation enables better understanding of predator-prey interactions and the prey choice of the common buzzard in Belarus.

Willughby's Buzzard: names and misnomers of the European Honey-buzzard (Pernis apivorus)

2018 ◽  
Vol 45 (1) ◽  
pp. 80-91 ◽  
Author(s):  
T. R. Birkhead ◽  
I. Charmantier ◽  
P. J. Smith ◽  
R. Montgomerie
Keyword(s):  
Accurate Description ◽  
Separate Species ◽  
Common Buzzard ◽  
Buteo Buteo ◽  
John Ray ◽  
The Common ◽  
Francis Willughby

The European Honey-buzzard (Pernis apivorus) was first accurately described and clearly distinguished from the Common Buzzard (Buteo buteo) by Francis Willughby and John Ray in their Ornithology, originally published in Latin in 1676. Alfred Newton's statement that Pierre Belon had described the species over a century earlier is not entirely correct, as Belon confused this honey-buzzard's features with those of the common buzzard and even appeared uncertain whether it was a separate species. One of Willughby's important contributions to ornithology was the identification and use of “characteristic marks” to distinguish and identify species, including those that distinguish the European Honey-buzzard from the Common Buzzard. Because Willughby provided the first accurate description of Pernis apivorus  – and because his contribution to ornithology has never been formally recognized –  we propose that the common name of the European Honey-buzzard be changed to Willughby's Buzzard.

From hard to soft: theory and Neolithic studies in Scotland

2011 ◽  
Vol 33 (1-2) ◽  
pp. 7-19
Author(s):  
Kenneth Brophy
Keyword(s):  
The Past

The Scottish Theoretical Archaeology Group (STAG) conference organisers expressed some doubts about how far theory has changed, and impacted, archaeological establishment and academia in Scotland. In this paper, I will argue that Scotland is certainly not isolated in a theoretical sense, although in the past, Scottish archaeology could be accused of being theoretically conservative, or at least dependent on ideas and models developed elsewhere. A case-study looking at Neolithic studies will be used to illustrate that despite some recent critical historiographies of the study of the period in Scotland, archaeologists in Scotland and those working with Scottish material have been theoretically innovative and in step with wider paradigm changes. The study of the Neolithic in Scotland, it could be argued, has been shaped by theory more than the study of any other period; we are not isolated, but rather part of wider networks of discourse.

THE URBAN MIGRANT FUTURE DESIRE: A STUDY OF REVERSE MIGRATION IN MALAYSIA

2017 ◽  
Vol 3 (2) ◽  
pp. 177
Author(s):  
Nur Huzeima Mohd Hussain ◽  
Hugh Byrd ◽  
Nur Azfahani Ahmad
Keyword(s):  
Oil And Gas ◽  
Industrial Society ◽  
Peak Oil ◽  
Population Mobility ◽  
Reverse Migration ◽  
The Past ◽  
Urban Migrants ◽  
Urban Migrant ◽  
Oil Crisis

Globalisation combined with resources of oil and gas has led to an industrial society in Malaysia.  For the past 30 years, rapid urban growth has shifted from 73% rural to 73% urban population. However, the peak oil crisis and economic issues are threatening the growth of urbanisation and influencing the trends of population mobility. This paper documents the beginnings of a reverse migration (urban-to-rural) in Malaysia.  The method adopted case study that involves questionnaires with the urban migrants to establish the desires, definite intentions and reasons for future migration. Based on this data, it predicts a trend and rate of reverse migration in Malaysia. 

Conservation and Preservation of Nature Reserves, Monuments andSpecial Architectural or Historic Interest in Nigeria: Towards Promotion of Sustainable Cultural Tourism

2015 ◽  
Vol 3 (2) ◽  
pp. 201-218
Author(s):  
Francis Chuma Osefoh
Keyword(s):  
Cultural Tourism ◽  
Nature Reserves ◽  
Communication Link ◽  
Built Environments ◽  
Tourist Attraction ◽  
The Past ◽  
Personal Experiences ◽  
Historical Heritage ◽  
Developed Nations

Some of the renowned world tourism countries have special peculiarities in character in terms of their nature reserves and built environments; that made them stand out for their attractions and visits. These qualities range from conservation and preservation of nature reserves, built environments- epoch architectural supports over the years; historical heritage; political; religious; socio-economic; cultural; and  high technology that enhance culture. The virtues of multi- ethnic groups and multi- cultural nature gave Nigeria a rich cultural heritage, and she is blessed with natural wonders, unique wildlife, and a very favorable climate. More often than not less attention and importance are placed over the nature reserves and built environments to the detriment of tourism in lieu of other sectors. Summarily the country lacks the culture of conservation and preservation of her abundant resources to promote cultural tourism. Case study strategy was applied in the research tours with reports of personal experiences, documentaries and analyses of sites visited in Europe and Nigeria were highlighted with references to their attributes in terms of structures and features that made up the sites as relate to culture and attraction.The task in keeping rural, city landscapes and nature reserves alive stands out as the secret of communication link from the past to present and the future; which tourism developed nations reap as benefits for tourist attraction.

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