scholarly journals Constraints and flexibility in mammalian social behaviour: introduction and synthesis

2013 ◽  
Vol 368 (1618) ◽  
pp. 20120337 ◽  
Author(s):  
Peter M. Kappeler ◽  
Louise Barrett ◽  
Daniel T. Blumstein ◽  
Tim H. Clutton-Brock
Keyword(s):  
Social Behaviour ◽  
Social Systems ◽  
50Th Anniversary ◽  
Field Studies ◽  
Social Constraints ◽  
Behavioural Flexibility ◽  
Theme Issue ◽  
Current State ◽  
Main Components

This paper introduces a Theme Issue presenting the latest developments in research on the interplay between flexibility and constraint in social behaviour, using comparative datasets, long-term field studies and experimental data from both field and laboratory studies of mammals. We first explain our focus on mammals and outline the main components of their social systems, focusing on variation within- and among-species in numerous aspects of social organization, mating system and social structure. We then review the current state of primarily ultimate explanations of this diversity in social behaviour. We approach the question of how and why the balance between behavioural flexibility and continuity is achieved by discussing the genetic, developmental, ecological and social constraints on hypothetically unlimited behavioural flexibility. We introduce the other contributions to this Theme Issue against this background and conclude that constraints are often crucial to the evolution and expression of behavioural flexibility. In exploring these issues, the enduring relevance of Tinbergen's seminal paper ‘On aims and methods in ethology’, with its advocacy of an integrative, four-pronged approach to studying behaviour becomes apparent: an exceptionally fitting tribute on the 50th anniversary of its publication.

scholarly journals An Integrated Testing Program for a Near-Field Radionuclide Migration Code

1997 ◽  
Vol 506 ◽  
Author(s):  
P. Binks ◽  
A. Fairhurst ◽  
D. Howarth ◽  
P. N. Humphreys ◽  
T. Johnstone ◽  
...  
Keyword(s):  
Near Field ◽  
Field Studies ◽  
Test Cases ◽  
Radionuclide Migration ◽  
Near Surface ◽  
Transport Code ◽  
Liquid Source ◽  
Integrated Testing ◽  
Main Components

ABSTRACTThe DRINK code is a 2D, biogeochemical transport code developed as a research tool to simulate the long term evolution of near surface LLW disposal sites and to generate gaseous and liquid source terms for far field studies. The code was recently upgraded to provide a more generic modelling tool with wider application to radionuclide migration scenarios. During the development of this code, the Generalised Repository Model (GRM), an integrated strategy has been employed to ensure the production of a fully tested, verified and quality assured product. This strategy is based around a code development protocol with three main components: quality assurance and documentation, verification and realism testing. Realism testing includes both peer review and model testing, with the latter including: experimental test cases; natural and anthropogenic analogues; field observations and finally uncertainty and sensitivity analysis. This paper describes the successful application of the protocol to the development and testing of the GRM code with specific emphasis upon verification and realism testing.

scholarly journals Current state of peatland soils as an effect of long-term drainage – preliminary results of peatland ecosystems investigation in the Grójecka Valley (central Poland)

2016 ◽  
Vol 67 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Bartłomiej Glina ◽  
Piotr Gajewski ◽  
Zbigniew Kaczmarek ◽  
Wojciech Owczarzak ◽  
Paweł Rybczyński
Keyword(s):  
Monitoring Program ◽  
Mining Industry ◽  
Soil Classification ◽  
Field Studies ◽  
Open Pit ◽  
Open Pit Mining ◽  
Central Poland ◽  
Current State ◽  
Mineral Soils

AbstractUnderstanding the effect of long-term drainage of peatland areas is helpful in future peatland management and regulations of water conditions. The aim of this work was to assess the current state of fen peatland soils in the Grójecka Valley (eastern part of the Wielkopolskie voivodeship, central Poland), affected by long-term agricultural use (pastures, meadows) since the 1960s and potentially by lignite open pit mining industry (KWB Konin) since 1980s. Field studies were carried out in 2015 in selected fen peatland areas. Soil material for laboratory analysis was collected from genetic horizons from four soil profiles. The surface horizons of studied organic and organo-mineral soils were built with well-developed moorsh material. They were classified as medium moorshiefied – MtII (profile 1, 3 and 4) and strongly moorshiefied – MtIII (profile 2). Obtained results of physical and physico-chemical analysis indicate that long-term peatland utilization connected with potential impact of the lignite mining, transformed mainly the upper horizons of studied organic and organo-mineral soils. However, despite obvious strong human impact on peatlands ecosystems, we cannot exclude the climate variables, what should be confirmed by long-term monitoring program. Furthermore, presented paper indicated that new subtype moorsh-muddy soils (in Polish: gleby murszowo-mułowe) within the type of gleyic soils should be implemented in the next version of Polish Soil Classification.

scholarly journals Current prospects of industrial use of valuable fish species in Lakes Kuito system (catchment area of the White sea)

2020 ◽  
Vol 2020 (2) ◽  
pp. 16-25
Author(s):  
Vyacheslav Anatolievich Shirokov ◽  
Andrey Pavlovich Georgiev ◽  
Nadezhda Stepanovna Cherepanova
Keyword(s):  
Fish Species ◽  
Field Studies ◽  
Research Centre ◽  
State University ◽  
Current State ◽  
Structure Of Communities ◽  
Annual Total ◽  
Academy Of Sciences ◽  
Water Problems

Based on the results of our own field studies (Northern Research Institute of Fisheries in Petrozavodsk State University (formerly SevNIORH), Northern Water Problems Institute of the Karelian Research Centre of the Russian Academy of Sciences) and taking into account the available literature and archival information, we studied the long-term dynamics of catches of valuable fish species (salmon, lake char, whitefish, vendace) in Lake Kuito, assessed the current state of the populations and new biology data are provided. It was established that after the regulation of Lower and Middle Kuyto as a whole, changes in the structure of communities of valuable fish species against the background of underdeveloped fishing are not very noticeable, the commercial part of ichthyocenosis remains quite stable. The cessation of centralized fishing has created the conditions for amateur and paid recreational fishing, focused mainly on catching the most valuable fish species: salmon, pale, whitefish, vendace in the conditions of free fishing, existing at present. In the conditions of free fishing, it is proposed to amend the existing fishing rules in terms of establishing fishing measures for salmon (57 cm), fallow (40 cm), whitefish (20 cm) and changing the fishing measure to vendace (9 cm). At the present stage, in the conditions of the Kuito system (including tributaries), in terms of the developed forecasting the volumes of annual total allowable catches of valuable fish species have been determined in the following limits: salmon – 1 ton, lake char – 1 ton, whitefish – 5 ton, vendace – 40–50 ton. The boundary position of the Kuito lakes contributes to the tourist attractiveness and creating a modern tourist complex of natural significance

Globalisation and Equity Issues in Post-socialist Transition Economies

2004 ◽  
Vol 54 (3) ◽  
pp. 273-296
Author(s):  
G. W. Kolodko
Keyword(s):  
Transition Economies ◽  
World Market ◽  
Early Years ◽  
Standard Of Living ◽  
Social Constraints ◽  
Significant Shift ◽  
Equity Issues ◽  
Goods And Services ◽  
The Rich

Equity issues in policymaking are difficult to resolve because they are linked not only to the economic situation but also to social constraints and political conflicts within a country. This is even more true in the case of post-socialist economies during their transition to a market system in the era of globalisation. The historical and irreversible process of liberalisation and integration of capital, goods and services, and labour markets into one world market, as well as the gradual construction of new institutions and the process of privatisation cause a significant shift in the income pattern of post-socialist emerging markets. Contrary to expectations, inequality increases affecting the standard of living and long-term growth. While globalisation contributes to the long-term acceleration of economic growth and offers a chance for many countries and regions to catch up with more advanced economies, it results in growing inequality both between the countries and within them. On average, the standard of living increases, but so does the gap between the rich and the poor. Therefore, equality issues should always be of concern to policymakers, especially in the early years of the change of regime in post-socialist transition economies.

CURRENT STATE AND DEVELOPMENT PERSPECTIVES OF THE CASPIAN SPRAT FISHERIES

2018 ◽  
pp. 69-75
Author(s):  
Tatiana Vasilievna Pomogaeva ◽  
Aliya Ahmetovna Aseinova ◽  
Yuriy Aleksandrovich Paritskiy ◽  
Vjacheslav Petrovich Razinkov
Keyword(s):  
Food Item ◽  
Growth Potential ◽  
North West ◽  
Marine Fishery ◽  
The North ◽  
Current State ◽  
West Part ◽  
Eggs And Larvae ◽  
Intensive Growth

The article presents annual statistical data of the Caspian Research Institute of Fishery. There has been kept track of the long term dynamics of the stocks of three species of Caspian sprat (anchovy, big-eyed kilka, sprat) and investigated a process of substituting a food item of sprats Eurytemora grimmi to a small-celled copepod species Acartia tonsa Dana. According to the research results, there has been determined growth potential of stocks of each species. Ctenophoran-Mnemiopsis has an adverse effect on sprat population by eating fish eggs and larvae. Ctenophoram - Mnemiopsis is a nutritional competitor to the full-grown fishes. The article gives recommendations on reclamation of stocks of the most perspective species - common sprat, whose biological characteristics helped not to suffer during Ctenophoram outburst and to increase its population during change of the main food item. Hydroacoustic survey data prove the intensive growth of common sprat biomass in the north-west part of the Middle Caspian. According to the results of the research it may be concluded that to realize the volumes of recommended sprat catch it is necessary to organize the marine fishery of common sprat at the Russian Middle Caspian shelf.

SELECTION WORK TO IMPROVE PRODUCTIVE AND BREWING QUALITIES OF SPRING BARLEY

1970 ◽  
pp. 38-40
Author(s):  
О. V. Levakova ◽  
L. М. Eroshenko ◽  
А. N. Eroshenko
Keyword(s):  
Protein Content ◽  
Spring Barley ◽  
Humus Content ◽  
Stability Index ◽  
Field Studies ◽  
Climatic Conditions ◽  
Extract Content ◽  
Labile Phosphorus ◽  
Loam Soil

The article presents and analyzes data of competitive varietal testing of promising varieties and lines of spring barley for yield and brewing qualities. Field studies were conducted in 2014–2017 on dark gray forest heavy loam soil. Agrochemical parameters are total nitrogen – 0.24%, humus content in a layer of 0-40 cm (according to Tyurin) – 5.19%, hydrolysis nitrogen – 123.5 mg / kg, salt extract pH – 4.92 mg-eq / 100g; labile phosphorus - 34.6 mg / 100g, labile potassium – 20.0 mg / 100g. The forerunner is winter wheat. Meteorological conditions in the years of research differed from each other and from the average long-term value. Barley samples were assessed by the protein content in the grain (GOST 10846-91), extract content (GOST 12130-77), weight 1000 grains (GOST 10842-89). Ecological plasticity was determined by the method proposed by E.D. Nettevich, A.I. Morgunov and M.I. Maksimenko, stability index (Ľ) by A. A. Gryaznov, indicator of stability level (Puss) by E. D. Nettevich and A. I. Morgunov. The main measure for assessing quality indicators is protein content. Many other biochemical and technological features of grain depend on its level. The experimental data convincingly testify to the significant influence of the soil and climatic conditions on the yield and, especially, on the brewing qualities of barley in the conditions of the Central Region of the Nonchernozem Zone. According to the studied traits, new valuable varieties Nadezhny, Sir, Noble and selection lines 141 / 1-09 h 746, 23 / 1-10 h 784, distinguished by high adaptability and resistance to adverse environmental factors, have been identified.

Social ethology of the wolverine

2018 ◽  
Author(s):  
Jeffrey P. Copeland ◽  
Arild Landa ◽  
Kimberly Heinemeyer ◽  
Keith B. Aubry ◽  
Jiska van Dijk ◽  
...  
Keyword(s):  
Social Organization ◽  
Social Interactions ◽  
Resource Availability ◽  
Social Behaviour ◽  
Social System ◽  
Group Living ◽  
Field Studies ◽  
Ecological Framework ◽  
The Social ◽  
Living Species

Social behaviour in solitary carnivores has long been an active area of investigation but for many species remains largely founded in conjecture compared to our understanding of sociality in group-living species. The social organization of the wolverine has, until now, received little attention beyond its portrayal as a typical mustelid social system. In this chapter the authors compile observations of social interactions from multiple wolverine field studies, which are integrated into an ecological framework. An ethological model for the wolverine is proposed that reveals an intricate social organization, which is driven by variable resource availability within extremely large territories and supports social behaviour that underpins offspring development.

scholarly journals Depression following traumatic brain injury: a comprehensive overview

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Marc Fakhoury ◽  
Zaynab Shakkour ◽  
Firas Kobeissy ◽  
Nada Lawand
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Health Concern ◽  
First Year ◽  
Comprehensive Overview ◽  
Symptoms Of Depression ◽  
Current State ◽  
Post Traumatic ◽  
Brain Changes

Abstract Traumatic brain injury (TBI) represents a major health concern affecting the neuropsychological health; TBI is accompanied by drastic long-term adverse complications that can influence many aspects of the life of affected individuals. A substantial number of studies have shown that mood disorders, particularly depression, are the most frequent complications encountered in individuals with TBI. Post-traumatic depression (P-TD) is present in approximately 30% of individuals with TBI, with the majority of individuals experiencing symptoms of depression during the first year following head injury. To date, the mechanisms of P-TD are far from being fully understood, and effective treatments that completely halt this condition are still lacking. The aim of this review is to outline the current state of knowledge on the prevalence and risk factors of P-TD, to discuss the accompanying brain changes at the anatomical, molecular and functional levels, and to discuss current approaches used for the treatment of P-TD.

scholarly journals Systemic Photoprotection in Skin Cancer Prevention: Knowledge among Dermatologists

Biomolecules ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 332
Author(s):  
Luca Fania ◽  
Francesca Sampogna ◽  
Francesco Ricci ◽  
Mariafrancesca Hyeraci ◽  
Andrea Paradisi ◽  
...  
Keyword(s):  
Skin Cancer ◽  
Sampling Procedure ◽  
Skin Cancer Prevention ◽  
Snowball Sampling ◽  
Scientific Publications ◽  
Current State ◽  
Skin Cancers ◽  
Knowledge And Attitude ◽  
Nonmelanoma Skin Cancers

Background: Systemic photoprotection (i.e., administration of substances such as nicotinamide, carotenoids, and vitamin D) may be important to reduce photocarcinogenesis or to support long-term protection against UV irradiation. Clinical trials showed that oral nicotinamide is effective in reducing the onset of new nonmelanoma skin cancers (NMSCs), while other oral photoprotectors failed to achieve the reduction of new melanoma or NMSC formation in humans. The aim of this study was to summarize the current state of knowledge of systemic photoprotection and to evaluate the knowledge and attitude of dermatologists regarding these treatments. Methods: The survey was conducted on a sample of dermatologists recruited according to a snowball sampling procedure. The questionnaire consisted of a first part asking for characteristics of the participant and a second part with 12 specific questions on their knowledge about systemic photoprotection, particularly their knowledge of astaxanthin, β-carotene, nicotinamide, and vitamin D3. Results: One hundred eight dermatologists answered the survey. Most of them (85.2%) stated that oral photoprotectors have a role in the prevention of skin cancer, and responses mainly mentioned nicotinamide. More than half of them (54.6%) had prescribed all the considered oral photoprotectors, but the majority of them had prescribed nicotinamide, mainly for 2 to 3 months during summer, almost invariably (n = 106) associated with topical photoprotectors. Most dermatologists (>80%) were aware of scientific publications demonstrating an effect of systemic photoprotectors on NMSC. Conclusions: Most Italian dermatologists have positive views on oral photoprotection in skin cancer and are aware of the demonstrated potential of nicotinamide in the prevention of NMSCs.

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