scholarly journals Low effect of young afforestations on bird communities inhabiting heterogeneous Mediterranean cropland

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1453 ◽  
Author(s):  
Juan S. Sánchez-Oliver ◽  
José M. Rey Benayas ◽  
Luis M. Carrascal

Afforestation programs such as the one promoted by the EU Common Agricultural Policy have spread tree plantations on former cropland. These afforestations attract generalist forest and ubiquitous species but may cause severe damage to open habitat species, especially birds of high conservation value. We investigated the effects of young (<20 yr) tree plantations dominated by pineP. halepensison bird communities inhabiting the adjacent open farmland habitat in central Spain. We hypothesize that pine plantations located at shorter distances from open fields and with larger surface would affect species richness and conservation value of bird communities. Regression models controlling for the influence of land use types around plantations revealed positive effects of higher distance to pine plantation edge on community species richness in winter, and negative effects on an index of conservation concern (SPEC) during the breeding season. However, plantation area did not have any effect on species richness or community conservation value. Our results indicate that the effects of pine afforestation on bird communities inhabiting Mediterranean cropland are diluted by heterogeneous agricultural landscapes.

2014 ◽  
Author(s):  
Juan S. Sánchez-Oliver ◽  
José M. Rey Benayas ◽  
Luis M. L.M. Carrascal

Afforestation programs such as the one promoted by the EU Common Agricultural Policy have spread tree plantations on former cropland. These afforestations attract generalist forest and ubiquitous species but may cause severe damage to open habitat species, especially birds of high conservation value. We investigated the effects of young (< 20 yr) tree plantations dominated by pine P. halepensis on bird communities inhabiting the adjacent open farmland habitat in central Spain. We hypothesize that pine plantations with larger surface, and areas at shorter distances from plantations, would result in lower bird species richness and conservation value of open farmland birds. Regression models controlling for the influence of land use types around plantations revealed significant positive effects of distance to pine plantation edge on community species richness in winter, and negative effects on an index of conservation concern (SPEC) during the breeding season. However, plantation area did not have any effect on species richness or community conservation value. Our results indicate that pine afforestation of Mediterranean cropland in heterogeneous agricultural landscapes has an overall low detrimental effect on bird species that are characteristic of open farmland habitat.


Author(s):  
Juan S. Sánchez-Oliver ◽  
José M. Rey Benayas ◽  
Luis M. L.M. Carrascal

Afforestation programs such as the one promoted by the EU Common Agricultural Policy have spread tree plantations on former cropland. These afforestations attract generalist forest and ubiquitous species but may cause severe damage to open habitat species, especially birds of high conservation value. We investigated the effects of young (< 20 yr) tree plantations dominated by pine P. halepensis on bird communities inhabiting the adjacent open farmland habitat in central Spain. We hypothesize that pine plantations with larger surface, and areas at shorter distances from plantations, would result in lower bird species richness and conservation value of open farmland birds. Regression models controlling for the influence of land use types around plantations revealed significant positive effects of distance to pine plantation edge on community species richness in winter, and negative effects on an index of conservation concern (SPEC) during the breeding season. However, plantation area did not have any effect on species richness or community conservation value. Our results indicate that pine afforestation of Mediterranean cropland in heterogeneous agricultural landscapes has an overall low detrimental effect on bird species that are characteristic of open farmland habitat.


2017 ◽  
Vol 1 (2) ◽  
pp. 24-34
Author(s):  
Nasreddine AISSAOUI ◽  
Said BRIKA

The restructuring of basic health care structures represented by public institutions nearby care in Algeria, according to Executive Decree 07/140 of 19 May 2007, could have effects both positive and negative: positive effects as we quote the approximation of diversified health services towards the citizen. As for the negative effects they live in ignorance of the real role of this kind of structure, namely the prevention in the broad sense of the term before the one of care. Among the results of our case study on the 7 wilayas of eastern Algeria, we noted: a small financial allocation and a shortage of medical and paramedical human resources, which have frozen the role of these NHPF, and which have favored the caregiver’s recourse to hospital emergencies. On the other hand, we have also noticed the sufficient number of these structures throughout all the communes of the country and their proximity to the living environments, despite the derisory number of services rendered, which were able to meet certain needs of the inhabitants.


2016 ◽  
Vol 2 (3) ◽  
pp. 344
Author(s):  
Twana Faraidun Hussein

This research tries to access to a range of outcomes, and to answer the fundamental question, a search (What is the impact of the means of communication on family relationships?).Try researcher through the form of a questionnaire to collect information in the field of the research community and in order to achieve his goal, And it relied on the questionnaire form for being an important means used extensively in sociology studies, The center of the city of Sulaymaniyah spatial boundaries of the search, where it is taken (200) and a sample search unit and distributed to three different areas (rich, middle and poor) by taking a stratified random sample, The fact that the population of the city of Sulaymaniyah different in terms of economic and cultural level, it's easy to take the mixed researcher and different sample representing the research community in terms of level, category, and class. They were assembled for the purpose of research and study.      It must be pointed out that this research is particularly important at the present time because the means of communication have spread widely in the Kurdish community and become accessible to everyone on the one hand, on the other hand, the number of users of these methods is increasing day by day, This is in addition to the increased demand for them constantly, making conduct such research in this importance area to see its impact on family relationships, and knowledge of its money from the effects (negative and positive) It is known that this means a double-edged her weapon of negative and positive effects at the same time, It must be the effort to reduce the negative effects of these tools and become members of the community in the service, and most importantly of all, do educate individuals on how to deal with these tools properly. It also offers search a set of proposals and recommendations to the concerned authorities to work out and strengthen the community in front of the challenges of the era of globalization of communications and response, where he became the Kurdish community a society open to the outside world through these means, which resulted in a change of values and social norms and behaviors that were adhered to by members of the community.


2020 ◽  
Vol 11 (2) ◽  
pp. 31-46
Author(s):  
Abbas Strømmen-Bakhtiar ◽  
Evgueni Vinogradov ◽  
Marit Kristin Kvarum ◽  
Kristian Rydland Antonsen

The technological developments described in terms of industrial revolutions or disruptive innovations have been shaping economic and social life in rural areas. The global trend towards urbanization presents a major challenge to rural communities. The aim of this article is to study how the peer-to-peer economy influences rural municipalities. On the one hand, in the literature, it is argued that sharing economy may improve accessibility, encourage mobility, attract investments and reduce urban bias. On the other hand, both academics and practitioners are aware of the disruptive effects of sharing economy on e.g., local real estate and labor markets. This qualitative study is based on empirical data from a municipality on the Lofoten Islands of Norway. The results demonstrate that Airbnb has some positive and some negative effects on rural development, but the magnitudes of these effects are modest. Of positive effects, the authors can mention increased local tourism, stimulation of conservation/restoration of traditional houses, and increased recreational mobility for rural residents.


2016 ◽  
Vol 61 (03) ◽  
pp. 1640013 ◽  
Author(s):  
YEW-KWANG NG

Mishan’s emphasis on the costs of economic growth half a century ago is becoming more important in this era of environmental concerns. More recently, another possible source of immiserizing growth is the one-child policy (recently relaxed) of China. This resulted in a biased sex-ratio and higher competition to earn incomes (to increase the probability of getting a wife), resulting in positive effects on GDP but negative effects on welfare. The implications of welfare-reducing growth for cost-benefit analysis and the legalization of prostitution are also discussed.


2017 ◽  
Vol 7 (1) ◽  
pp. 40-49
Author(s):  
Hasan Mahmutović ◽  
◽  
Sead Talović ◽  
Safet Kurtović ◽  
◽  
...  

The discourse of globalization and its effects have been the most current topic in the field of economics in recent times. However, empirical research on the impact of globalization on companies, especially in transition countries, is very scarce. This paper focuses on the study of the impact of globalization on the performance of companies in Bosnia and Herzegovina by analyzing their interrelationships. The findings, in the case of companies in Bosnia and Herzegovina, have confirmed earlier findings about the double impact of globalization by showing, on the one hand, its positive effects and, on the other hand, the negative effects on the performance of the companies. Additionally, the research results have shown that negative effects are felt more strongly in the case of small and medium-sized companies than in the case of large companies.


2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Fermín Fernández-Calderón ◽  
Óscar M. Lozano Rojas ◽  
Izaskun Bilbao Acedos ◽  
Antonio J. Rojas Tejada ◽  
Claudio Vidal Giné ◽  
...  

Objetivos: El presente estudio tiene como objetivo describir los efectos positivos y negativos percibidos por asistentes a fiestas rave underground, y analizar las relaciones existentes entre las drogas consumidas y los efectos percibidos.Método: estudio realizado entre 252 asistentes a 22 fiestas raves underground celebradas en Andalucía, entre los meses de mayo y octubre de 2008. Se han aplicado contrastes de proporciones y regresiones logísticas.Resultados: Los resultados muestran que las drogas más consumidas por los asistentes fueron: alcohol (94.4%), cannabis (76.6%), speed (74.7%), éxtasis (64.1%), cocaína (28.2%), ketamina (23.8%) y LSD (22.9%). AbstractObjetives: The purpose of this study is to describe positive and negative effects perceived by underground rave attenders, and to analyze the relations between drugs consume and perceived risks.Method: The research was developed with a sample of 252 assistant at 22 underground raves in Andalucía (Spain), from May to October 2008. It has been applied contrast proportions and logistic regressions analysis.Results: Results show that the most consumed drugs were: alcohol (94.4%), cannabis (76.6%), speed (74.7%), ecstasy (64.1%), cocaine (28.2%), ketamine (23.8%) and LSD (22.9%). The most positive effects perceived were: euphoria, well-being, happiness (90.3%) and connection with music (75.4%). The most negative effects perceived were: tiredness (78.2%), jaw clenching (55.2%) and concentration decreased (54.4%). Ecstasy is the substance which more increases probability to perceive positive effects, while speed is the one that more increases probability to perceive negative effects.Conclusions: Negative effects experimented for participants show the high risk for rave attendees´ health. These, together with positive effects, must be considered in order to design preventive and risk reduction strategies.


2020 ◽  
Vol 50 (12) ◽  
pp. 1307-1322 ◽  
Author(s):  
John Brazner ◽  
Frances MacKinnon

Nova Scotia’s forested landscapes are degraded and under stress. As the province moves toward an ecological forestry management approach, land managers need more complete information about the relative biodiversity value of various habitats in landscapes that they manage to fully assess conservation consequences of different management options. To begin assessing the relative conservation value of different forest types, we surveyed bird communities in 18 forested wetlands (wooded bogs, tall shrub swamps, and treed swamps), mature upland forest stands, and regenerating upland forest stands in western Nova Scotia during the breeding season in 2017 and 2018. There were distinct differences among the bird communities in each forest type. Bird species diversity, overall abundance, and abundance of several guilds and species of conservation concern were higher in forested wetlands than in mature and regenerating upland forests. Bogs and shrub swamps had the highest number of species with strong habitat affinities, but treed swamps and mature sites had unique suites of strongly associated species and guilds — several of conservation concern. Regenerating sites were occupied mainly by forest-edge species and conservation value was low. Our study highlights the importance of forested wetlands to bird conservation and supports the idea that forested wetlands are avian diversity hotspots.


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