scholarly journals Travel and Tourism

Author(s):  
Adrian Palmer

The travel and tourism sector was hit more rapidly and deeply by COVID-19 than most other sectors. Recovery to pre-COVID-19 activity levels is likely to be prolonged, and questions are raised whether enforced change in consumer behaviour will have long-term effects. The travel and tourism sector has a history of reinventing itself, and previous predictions of decline following crises have often been short-lived. This chapter reviews historical precedents and theories of consumer behaviour to explore whether recovery will be different this time round, especially given the possible habit breaking effects of online substitutes, and political expediency of reducing causes of climate change.

2021 ◽  
pp. 1-37
Author(s):  
Michał Burzyński ◽  
Frédéric Docquier ◽  
Hendrik Scheewel

Abstract In this paper, we investigate the long-term effects of climate change on the mobility of working-age people. We use a world economy model that covers almost all the countries around the world, and distinguishes between rural and urban regions as well as between flooded and unflooded areas. The model is calibrated to match international and internal mobility data by education level for the last 30 years, and is then simulated under climate change variants. We endogenize the size, dyadic, and skill structure of climate migration. When considering moderate climate scenarios, we predict mobility responses in the range of 70–108 million workers over the course of the twenty-first century. Most of these movements are local or inter-regional. South–South international migration responses are smaller, while the South–North migration response is of the “brain drain” type and induces a permanent increase in the number of foreigners in OECD countries in the range of 6–9% only. Changes in the sea level mainly translate into forced local movements. By contrast, inter-regional and international movements are sensitive to temperature-related changes in productivity. Lastly, we show that relaxing international migration restrictions may exacerbate the poverty effect of climate change at origin if policymakers are unable to select/screen individuals in extreme poverty.


PEDIATRICS ◽  
1973 ◽  
Vol 52 (4) ◽  
pp. 577-585 ◽  
Author(s):  
Gary J. Kaplan ◽  
J. Kenneth Fleshman ◽  
Thomas R. Bender ◽  
Carol Baum ◽  
Paul S. Clark

Histories of ear disease, otoscopic examinations, and audiologic, intelligence, and achievement tests were obtained from a cohort of 489 Alaskan Eskimo children who have been followed through the first ten years of life. Seventy-six per cent had experienced one or more episodes of otitis media since birth. Of these, 78% had their first attack during their first two years of life. Perforations and scars were present in 41%. A hearing loss of 26 decibels or greater was present in 16%, and an additional 25% were in the normal range but had a measurable air-bone gap. Children with a history of otitis media prior to 2 years of age and a hearing loss of 26 decibels or greater had a statistically significant loss of verbal ability and were behind in total reading, total math, and language. In addition, children who had an early onset of otitis media but now had normal hearing with a conductive component were also adversely affected in verbal areas. The number of otitis media episodes was related to tympanic membrane abnormalities, hearing loss, and low verbal and achievement scores. These findings indicate that otitis media has been a significant cause of morbidity in Alaskan Eskimo children, and its onset during the critical years of language development as well as the number of episodes play an important role in impairing verbal development.


Western Birds ◽  
2020 ◽  
Vol 51 (4) ◽  
pp. 270-292
Author(s):  
W. David Shuford ◽  
Kathy C. Molina ◽  
John P. Kelly ◽  
T. Emiko Condeso ◽  
Daniel S. Cooper ◽  
...  

As part of an 11-state inventory, we censused the Double-crested Cormorant (Phalacrocorax auritus) in the interior of California from 2009 to 2012, using a combination of aerial, ground, and boat surveys. An estimated 8791 pairs breeding in the interior of the state in 2009–2012 exceeded the 7170 pairs estimated in 1998–1999. In both periods, cormorants were breeding in 9 of 11 ecoregions, but three-fourths were at one site—Mullet Island at the Salton Sea in the Sonoran Desert ecoregion (abandoned in 2014). The ecoregions with the next highest proportions were the Sacramento Valley, San Joaquin Valley, and Modoc Plateau. The apparent increase in numbers and colony sites since 1999—consistent with the pattern through much of western North America—reflects the (short-lived) increase in numbers at the Salton Sea, an increasing number of colonies and breeding pairs in the Central Valley, and slightly better coverage on the recent surveys. Because of practical survey constraints and limited data to date, evidence of change in numbers of Doublecrested Cormorants breeding in the interior of California between 1998–1999 and 2009–2012 is inconclusive. Plans for monitoring will need to take into account the effects of substantial annual variation in numbers, which may be associated with large fluctuations in cormorants’ prey base, short-term cycles of drought and flood, shifts of nesting cormorants into or out of the interior of California, and the expectation of greater environmental fluctuations with continuing climate change. The factors most likely to limit the number of cormorants breeding in the interior of the state are habitat loss or alteration (particularly from reallocation of water for human needs), disease, human disturbance, and the long-term effects of climate change.


Author(s):  
Andrew E. McKechnie

The direct impacts of higher temperatures on birds are manifested over timescales ranging from minutes and hours to years and decades. Over short timescales, acute exposure to high temperatures can lead to hyperthermia or dehydration, which among arid-zone species occasionally causes catastrophic mortality events. Over intermediate timescales of days to weeks, high temperatures can have chronic sub-lethal effects via body mass loss or reduced nestling growth rates, negatively affecting sev eral fitness components. Long-term effects of warming manifested over years to decades involve declining body mass or changes in appendage size. Key directions for future research include elucidating the role of phenotypic plasticity and epigenetic processes in avian adaptation to climate change, examining the role of stress pathways in mediating responses to heat events, and understanding the consequences of higher temperatures for species that traverse hot regions while migrating.


2019 ◽  
Vol 29 (4) ◽  
pp. 704-706 ◽  
Author(s):  
Susan Pollock

In his most recent book, James Scott presents us with a ‘deep history’ of the alluvial lowlands of Mesopotamia, from early domestications in the Neolithic to the emergence and consolidation of early states. Although the focus lies on Mesopotamia in these periods, Scott delves into the beginnings of the human use of fire in the Palaeolithic and draws on comparative developments in Southeast Asia, Egypt, Greece, Rome and elsewhere. He poses large questions: Why did people move into densely packed villages—‘Neolithic multispecies resettlement camps’—accompanied by the plants and animals they domesticated, but also by an exponentially increased disease load and a substantial portion of drudgery? Why did states emerge when they did, despite the fact that the main ecological and demographic conditions were present millennia earlier? What accounts for the fragility of these early states, and why do our standard histories obscure that fact? Guiding themes are ecological and demographic, but also draw explicit attention to the unintended consequences of human actions. Indeed, reflections on the Anthropocene underpin the book's arguments, and, like many others who write on this topic, Scott is motivated by deep-seated concerns about the sorry ecological state of our contemporary world and connections to long-term effects of human activity.


2019 ◽  
Vol 11 (21) ◽  
pp. 5954 ◽  
Author(s):  
Carlos Sanz-Lazaro

Climate change is modifying disturbance regimes, affecting the severity and occurrence of extreme events. Current experiments investigating extreme events have a large diversity of experimental approaches and key aspects such as the interaction with other disturbances, the timing, and long-term effects are not usually incorporated in a standardized way. This lack of comparability among studies limits advances in this field of research. This study presents a framework that is comprised of two experimental approaches designed to test expected changes on disturbance regime due to climate change. These approaches test the effects of disturbances becoming more clustered and more extreme. They use common descriptor variables regardless of the type of disturbance and ecosystem. This framework is completed with a compilation of procedures that increase the realism of experiments in the aforementioned key aspects. The proposed framework favours comparability among studies and increases our understanding of extreme events. Examples to implement this framework are given using rocky shores as a case study. Far from being perfect, the purpose of this framework is to act as a starting point that triggers the comparability and refinement of these types of experiments needed to advance our understanding of the ecological effects of extreme events.


2015 ◽  
Vol 48 (03) ◽  
pp. 317-320 ◽  
Author(s):  
Theddeus Octavianus Hari Prasetyono ◽  
Patricia Marcellina Sadikin

ABSTRACTEven though Silicone injection for breast augmentation has been related to disastrous long-term effects and complications, some patients do not develop significant symptoms at all (asymptomatic). Unfortunately, the management of asymptomatic Silicone-injected breast is still unclear and has never been reported exclusively. We present two cases of asymptomatic patients with a history of liquid Silicone injections who refused to have a mastectomy. They were concerned with the breast ptosis and chose to undergo reduction mammoplasty to improve the appearance of the breasts. Magnetic resonance imaging may be useful as an additional screening tool to confirm the diagnosis and exclude the presence of malignancy in breasts with injected Silicone. We believe that breast reduction may be the alternative option for women with a history of liquid Silicone injection who have no symptoms but desire to preserve their breasts and improve their aesthetics.


2015 ◽  
Vol 55 (4) ◽  
pp. 449-454 ◽  
Author(s):  
Jan J. Jobsen ◽  
Job van der Palen ◽  
Mariël Brinkhuis ◽  
Francisca Ong ◽  
Henk Struikmans

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