scholarly journals Autumn Migration of the Wood Pigeon, Columba palumbus, at Eastern Part of the Polish Baltic Coast

The Ring ◽  
2019 ◽  
Vol 41 (1) ◽  
pp. 27-41
Author(s):  
Justyna M. Machowina ◽  
Izabella Rząd
Keyword(s):  
Wave Structure ◽  
Estimation Procedure ◽  
Autumn Migration ◽  
Baltic Coast ◽  
Step Procedure ◽  
Ranking Scheme ◽  
Diurnal Migrant ◽  
Further Development ◽  
Wood Pigeon

Abstract The Wood Pigeon, Columba palumbus, is a common diurnal migrant across most of the Europe. The visual observations were carried out during autumn work of the Operation Baltic ringing stations, mainly at Mierzeja Wiślana (54°21’N, 19°19’E) parallely to the ringing of birds. Observations of passing birds were performed 15 minutes per every hour from sunrise to sunset. The autumn observation period was long enough to cover whole pigeons migration at the southern coast of Baltic (14 Aug. – 11 Nov.). Altogether 119,019 Wood Pigeons were observed within 20 seasons of observations. The goals of this work is (1) to describe the course of the Wood Pigeon autumn migration at the Polish Baltic coast as to numbers in long-term aspect and the seasonality of migration, (2) to propose further development in the study on wave structure of the bird passage. The main analysis of this work-description of the seasonal dynamics of migration - was carried out with modified and widened method used for that kind of analysis in earlier publications. In the present paper the wave structure is described by the estimated border days between supposed waves taking under consideration different properties of the passage dynamics. Here are used three groups of parameters: (1) total numbers of birds observed daily during several years, inter-year variability (as SD between year number values), and the coefficient of variation (V), (2) number of migration peaks that occurred in that date within years of the study (there were used two classes of peaks – High Peaks and Peaks), (3) numbers of birds passing during recognized peak days. All estimations were done independently of others and only finally summarized using common ranking scheme. Such step by step procedure make estimation more and more reliable. Very high agreement between estimations based on three groups of parameters suggests strongly that the proposed estimation procedure is effective enough.

scholarly journals The General Pattern of Seasonal Dynamics of The Autumn Migration of The Wood Pigeon Columba Palumbus in Italy

The Ring ◽  
2018 ◽  
Vol 40 (1) ◽  
pp. 3-18
Author(s):  
Enrico Cavina ◽  
Rinaldo Bucchi ◽  
Przemysław Busse
Keyword(s):  
Seasonal Dynamics ◽  
Seasonal Pattern ◽  
General Pattern ◽  
Central Italy ◽  
Autumn Migration ◽  
Starting Point ◽  
Number Dynamics ◽  
Wood Pigeon ◽  
Pronounced Peak

Abstract Cavina E., Bucchi R. and Busse P. 2018. The general pattern of seasonal dynamics of the autumn migration of the Wood Pigeon Columba palumbus in Italy. Ring 40: 3-18. Given the scarcity of studies on the migration of the Wood Pigeon through Italy, the first systematic observations by a network of hunters, as citizen researchers, can be presented as a starting point for more in-depth analyses. Observations from the years 1998-2006 are analysed and presented in a generalized form. During this period more than 100 observation sites, covering most of Italy, were active for about 40 days every autumn. Migration over Italy was described in terms of the timing and intensity of migration. Special attention was directed to the long-term number dynamics and seasonal dynamics of the passage. The most intensive migration was observed within northern Italy, while lower intensity is visible more to the south of the peninsula. Following tendencies in numbers of observed migrants within the ten years of the study, we can find positive tendencies in most of the northern provinces, while three negative trends are visible in central Italy. The study of the seasonal pattern, in terms of the number dynamics of the passage and the frequency of pronounced peak days, strongly suggests that there are five or six waves of pigeons passing through Italy in different parts of the autumn that are quite stable between years. Every year the time of the passage includes a few peak days of migration.

Autumn Migration of Waders (Charadrii) at the Reda Mouth (N Poland)

Ring ◽  
2009 ◽  
Vol 31 (1) ◽  
pp. 23-39 ◽  
Author(s):  
Włodzimierz Meissner ◽  
Anna Włodarczak-Komosińska ◽  
Dariusz Górecki ◽  
Cezary Wójcik ◽  
Mateusz Ściborski ◽  
...  
Keyword(s):  
Migration Pattern ◽  
Egg Laying ◽  
Autumn Migration ◽  
Tundra Zone ◽  
Age Classes ◽  
Calidris Alpina ◽  
Mouth Region ◽  
Baltic Coast ◽  
Northern Latitudes ◽  
Vanellus Vanellus

Autumn Migration of Waders (Charadrii) at the Reda Mouth (N Poland) The migration of waders was investigated at the Reda mouth (Polish Baltic coast) between 1996 and 2001. During the study 496 counts were conducted in the period between 5 July and 5 October. The most numerous species observed were: the Lapwing (Vanellus vanellus) - 39.5% and Dunlin (Calidris alpina) - 29.8% of all waders. Because of a variety of habitats in the Reda mouth region, among the waders staging numerously in the Reda mouth there were species typical both for coastal and inland habitat. It was shown that birds from tundra zone migrated later than those from more southern breeding areas, which was caused by much later beginning of egg laying in northern latitudes. Moreover, in the species from tundra zone, e.g. the Knot (Calidris canutus), Little Stint (C. minuta), Curlew Sandpiper (C. ferruginea), the migration of both age classes were well separated, whereas in those from more southern areas, e.g. the Little Ringed Plover (Charadius dubius), Common Sandpiper (Actitis hypoleucos), such difference was less pronounced and the period of common passage of adults and juveniles was much longer. A comparison of the obtained data on migration pattern with some other sites in Poland where regular counts were conducted showed several similarities and some discrepancies, which are discussed in the paper.

scholarly journals Applications, challenges, and needs for employing synthetic biology beyond the lab

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Sierra M. Brooks ◽  
Hal S. Alper
Keyword(s):  
Synthetic Biology ◽  
Great Promise ◽  
Long Term Storage ◽  
Autonomous Function ◽  
Recent Advances ◽  
Resource Limited ◽  
Major Application ◽  
Further Development ◽  
Probiotic Delivery

AbstractSynthetic biology holds great promise for addressing global needs. However, most current developments are not immediately translatable to ‘outside-the-lab’ scenarios that differ from controlled laboratory settings. Challenges include enabling long-term storage stability as well as operating in resource-limited and off-the-grid scenarios using autonomous function. Here we analyze recent advances in developing synthetic biological platforms for outside-the-lab scenarios with a focus on three major application spaces: bioproduction, biosensing, and closed-loop therapeutic and probiotic delivery. Across the Perspective, we highlight recent advances, areas for further development, possibilities for future applications, and the needs for innovation at the interface of other disciplines.

scholarly journals Sustaining Trade during COVID-19 Pandemic: Establishing a Conceptual Model Including COVID-19 Impact

2021 ◽  
Vol 13 (10) ◽  
pp. 5418
Author(s):  
Nashwan M. A. Saif ◽  
Jianping Ruan ◽  
Bojan Obrenovic
Keyword(s):  
International Trade ◽  
Bilateral Trade ◽  
Production Costs ◽  
Research Directions ◽  
Economic Distance ◽  
Conceptual Paper ◽  
Sudden Decrease ◽  
Further Development ◽  
Conceptual Research

The conceptual research aims to identify antecedents conducive to bilateral trade during the COVID-19 pandemic. Considering the relevance of bilateral trade for foreign policy and economy studies, there is a need for a renewed framework in times of extreme economic instability. As international commerce is essential for improving the country’s economy, we have examined how economic distance, population, trade percentage of GDP, exchange rate, and political changes interconnect and relate to COVID-19, influencing trade flows. This conceptual paper illustrates the likely impact of COVID-19 on international trade by exploring pandemics’ effects on standard trading parameters such as GDP, distance, policy stability, and population. We model the resulting shock as a multifaceted variable reflected in capital underutilization, manufacturing output decline, international trade costs inflation, production costs inflation, decrease in demand for certain services and shift from everyday needs towards activities that exclude the proximity between people, e.g., proclivity towards virtual market products. The sudden decrease in GDP and bilateral trade, as well as FDI, is amplified by further development of pandemics’ long-term consequences. We take COVID-19 to be a technological, financial, and policy shock significantly influencing international trade and economic development and argue that it will have a varying impact on diverse sectors and economies. The paper offers preliminary insight into the pandemic-related economics that are unfolding and deduce recommendations on positive changes in trading policy to fully leverage on arising trading opportunities and point to potential research directions.

scholarly journals The Impact of COVID-19 on Hospitality Industry in Greece and Its Treasured Santorini Island

2021 ◽  
Vol 13 (14) ◽  
pp. 7906
Author(s):  
Nikola Medová ◽  
Lucie Macková ◽  
Jaromir Harmacek
Keyword(s):  
Social Impact ◽  
Tourism Sector ◽  
Challenges And Opportunities ◽  
Multiple Variables ◽  
Hospitality Sector ◽  
Tourism And Hospitality ◽  
The Impact ◽  
Further Development

This paper focuses on the dynamic of the recent upheaval in the tourism and hospitality sector due to the COVID-19 epidemic in Greece and Santorini island. It uses the case study of a country one-fourth of whose GDP consists of tourism. We compare the available statistical data showing the change in variables in the previous years with 2020 and look into the new challenges and opportunities posed by the drop in the numbers of visitors and flights. We focus mainly on the economic and social impact on the destination and possible future scenarios for further development in the area. Data show a significant effect of the pandemic on multiple variables, such as the long-term trend of the importance of tourism sector in GDP in Greece, the number of flights and visitors to Greece and Santorini island, and the contribution of tourism and travel to GDP. Based on the available data, we also construct three foresight scenarios that describe the possible futures for Santorini island in terms of the pandemic evolution. These scenarios may help various stakeholders and policymakers to be better prepared for different developments that may appear.

scholarly journals A fuzzy set model for assessment of a perspectives level for integration of new materials in industrial enterprise processes

2018 ◽  
Vol 44 ◽  
pp. 00045
Author(s):  
Elena Kasianenko ◽  
Evgenii Konnikov ◽  
Nikita Lukashevich
Keyword(s):  
Risk Process ◽  
Industrial Enterprise ◽  
New Materials ◽  
Process Systems ◽  
Industrial Enterprises ◽  
Definition Of ◽  
Effective Models ◽  
Further Development ◽  
Qualitative Changes

The definition of effective improvement vectors is currently one of the most pressing challenges facing the industry representatives. The transition to the sixth technological mode effectively contributes to competition intensification in all markets of industrial products. This is largely due to the fact that existing process systems are at the peak of their effectiveness. Further development requires qualitative changes. However, the principal improvement is a long-term and high-risk process. For this reason the issue of creating effective models for assessment of the strategic lines of processes improvement becomes increasingly important for industrial enterprises. This article considers in details the vector of industrial enterprise processes improvement based on the integration of new materials. As a result, a model allowing to assess a perspectives level for integration of new materials in industrial enterprise processes is created.

Neural Transplantation

1995 ◽  
Vol 4 (4) ◽  
pp. 393-400 ◽  
Author(s):  
Olle Lindvall
Keyword(s):  
Cell Transplantation ◽  
Therapeutic Strategy ◽  
Symptomatic Relief ◽  
Animal Experiments ◽  
Research Field ◽  
Term Survival ◽  
Demyelinating Disorders ◽  
And Function ◽  
Further Development

Cell transplantation is now being explored as a new therapeutic strategy to restore function in the diseased human central nervous system. Neural grafts show long-term survival and function in patients with Parkinson's disease but the symptomatic relief needs to be increased. Cell transplantation seems justified in patients with Huntington's disease and, at a later stage, possibly also in demyelinating disorders. The further development in this research field will require systematic studies in animal experiments but also well-designed clinical trials in small groups of patients.

scholarly journals Sensors and instruments for oceanic dissolved carbon measurements

2009 ◽  
Vol 6 (1) ◽  
pp. 491-524 ◽  
Author(s):  
U. Schuster ◽  
A. Hannides ◽  
L. Mintrop ◽  
A. Körtzinger
Keyword(s):  
Dissolved Inorganic Carbon ◽  
Analytical Techniques ◽  
Dissolved Carbon ◽  
Autonomous Mode ◽  
Technological Developments ◽  
Further Development ◽  
Temporal Coverage ◽  
Manual Mode

Abstract. Highly accurate and precise measurements of marine carbon components are required in the study of the marine carbon cycle, particularly when investigating the causes for its variability from seasonal to interannual timescales. This is especially true in the investigation of the consequences of anthropogenic influences. The analysis of any component requires elaborate instrumentation, most of which is currently used onboard ships, either in manual mode or autonomous mode. Technological developments result in more and more instruments that have long-term reliability so that they can be deployed on surface moorings and buoys, whilst the great technological and operational challenges mean that only few sensors have been developed that can be used for sub-surface in situ measurements on floats, robots, or gliders. There is a special need for autonomous instruments and sensors that are able to measure a combination of different components, in order to increase the spatial and temporal coverage of marine carbon data. This paper describes analytical techniques used for the detection of the marine dissolved carbon components, both inorganic and organic: the fugacity of CO2, total dissolved inorganic carbon, pH, alkalinity, and dissolved organic carbon. By pointing out advantages, disadvantages, and challenges of the techniques employed in the analysis of each component, we aim to aid non-carbon marine scientists, sensor developers and technologists, in the decision where to tackle the challenges of further development.

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