The relative importance of conditions in wintering and passage areas on spring arrival dates: the case of long-distance Iberian migrants

Over the past decades, spring temperatures have increased in temperate regions, which resulted in birds arriving earlier in spring. Nonetheless, the timing of some species’ spring migration relies on endogenous rhythms that are not affected by climate change. In this study, we analysed changes in the spring arrival dates of 36 bird species over two periods in 22 towns and villages in Southeast Hungary and West Romania. The first period covered the national spring migration counts between 1894 and 1926, while the second period took place between 2005 and 2019 and is based on our recent observation data. Our results show, that the average spring arrival dates of most long-distance migrant species have not changed significantly over the past 100 years. In contrast, in cases of medium and short-distance migrants, most species arrive earlier recently than in the past. This may be caused by the fact, that the migration habit of long-distance migrants is characterized by strong genetic determinants, so they can not react as quickly to the warmer spring weather in Europe as the medium and short-distance migrants. However, in cases of some long-distance migrants, the timing of spring migration changed due to the drying of wintering grounds.

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Why is timing of bird migration advancing when individuals are not?

Proceedings of The Royal Society B Biological Sciences ◽

10.1098/rspb.2013.2161 ◽

2014 ◽

Vol 281 (1774) ◽

pp. 20132161 ◽

Cited By ~ 88

Author(s):

Jennifer A. Gill ◽

José A. Alves ◽

William J. Sutherland ◽

Graham F. Appleton ◽

Peter M. Potts ◽

...

Keyword(s):

Rapid Evolution ◽

Climatic Conditions ◽

Population Declines ◽

Migratory Species ◽

Long Distance ◽

Breeding Sites ◽

Timing Of Migration ◽

Arrival Dates ◽

Spring Arrival ◽

New Recruits

Recent advances in spring arrival dates have been reported in many migratory species but the mechanism driving these advances is unknown. As population declines are most widely reported in species that are not advancing migration, there is an urgent need to identify the mechanisms facilitating and constraining these advances. Individual plasticity in timing of migration in response to changing climatic conditions is commonly proposed to drive these advances but plasticity in individual migratory timings is rarely observed. For a shorebird population that has significantly advanced migration in recent decades, we show that individual arrival dates are highly consistent between years, but that the arrival dates of new recruits to the population are significantly earlier now than in previous years. Several mechanisms could drive advances in recruit arrival, none of which require individual plasticity or rapid evolution of migration timings. In particular, advances in nest-laying dates could result in advanced recruit arrival, if benefits of early hatching facilitate early subsequent spring migration. This mechanism could also explain why arrival dates of short-distance migrants, which generally return to breeding sites earlier and have greater scope for advance laying, are advancing more rapidly than long-distance migrants.

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Demonstration of a global modeling methodology to determine the relative importance of local and long-distance sources

Atmospheric Environment ◽

10.1016/j.atmosenv.2006.08.052 ◽

2007 ◽

Vol 41 (4) ◽

pp. 776-789 ◽

Cited By ~ 22

Author(s):

Roland R. Draxler

Keyword(s):

Relative Importance ◽

Long Distance ◽

Global Modeling ◽

Modeling Methodology

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Age- and sex-dependent spring arrival dates of Eastern Kingbirds

Journal of Field Ornithology ◽

10.1111/j.1557-9263.2009.00203.x ◽

2009 ◽

Vol 80 (1) ◽

pp. 35-41 ◽

Cited By ~ 24

Author(s):

Nathan W. Cooper ◽

Michael T. Murphy ◽

Lucas J. Redmond

Keyword(s):

Arrival Dates ◽

Spring Arrival ◽

Age And Sex

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The Impact of Family Life and Marital Status on the Motivations of Ultramarathoners: The Karkonosze Winter Ultramarathon Case Study

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17186596 ◽

2020 ◽

Vol 17 (18) ◽

pp. 6596

Author(s):

Ewa Malchrowicz-Mośko ◽

Zbigniew Waśkiewicz

Keyword(s):

Marital Status ◽

Family Life ◽

Relative Importance ◽

Distance Running ◽

Long Distance ◽

Research Results ◽

Long Distance Running ◽

Polish Version ◽

The Impact

The aim of this study was to investigate how family life and marital status influence the motivations of ultramarathoners. Two-hundred-sixty-seven Polish athletes participated in the diagnostic survey during the Karkonosze Winter Ultramarathon. The Polish version of the Motivation of Marathoner Scale was used. The motivations of ultra-runners were investigated among the following groups of respondents: people in a relationship/marriage; singles; people with children vs. childless people; people who run alone and with a partner; people who parted with a partner because of lack of support for running. Research results can be useful for sport managers–e.g., findings show the relative importance of modern sport for singles in the second half of life. Research has also shown how people in relationships and people with children can be realized through demanding long-distance running. We also found that running ultramarathons can pose a threat to a relationship.

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Long Distance Managerial Intervention in Overseas Conflicts: Helping Missionaries Reframe Conflict along Multiple Dimensions

Missiology An International Review ◽

10.1177/009182961003800304 ◽

2010 ◽

Vol 38 (3) ◽

pp. 281-293 ◽

Cited By ~ 1

Author(s):

David R. Dunaetz

Keyword(s):

Conflict Management ◽

Relative Importance ◽

Long Distance ◽

Home Office ◽

Office Management ◽

Multiple Dimensions ◽

Rich Media ◽

Present Information ◽

Key Issues ◽

The Relationship

Effective ways of conflict management must be found for missionaries when no trusted mediator in the region is available. Home office management or leaders in other regions can intervene through context rich media such as the telephone and video conferencing to provide help. Intervention through context poor media, such as email, is much less likely to succeed. Effective managerial intervention involving interaction with each party can lead to reframing the conflict into an opportunity to cooperate and find mutually beneficial solutions. The manager can present information, ask questions, and help the parties see that resolution is possible by addressing key issues such as the relative importance of the consequences, the potential win-win nature of the solution, each party's sense of victimization, and the certainty of continued interaction in the relationship.

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Relationship between arrival date, hatching date and breeding success of the white stork (Ciconia ciconia) in Slovakia

Biologia ◽

10.2478/s11756-009-0037-3 ◽

2009 ◽

Vol 64 (2) ◽

Cited By ~ 16

Author(s):

Miroslav Fulin ◽

Leszek Jerzak ◽

Tim Sparks ◽

Piotr Tryjanowski

Keyword(s):

Breeding Success ◽

White Stork ◽

Hatching Date ◽

Ciconia Ciconia ◽

Arrival Dates ◽

Spring Arrival ◽

First Arrival ◽

Long Term Trends ◽

Migrant Birds

AbstractChanges in the spring arrival dates of migrant birds have been reported from a range of locations and many authors have focused on long-term trends and their relationship to temperature and other climatic events. Perhaps more importantly, changed arrival dates may have consequences for the breeding dates of birds which strongly influence breeding success. In this paper we take the opportunity provided by a monitoring scheme of the white stork (Ciconia ciconia) to examine several features of the timing of arrival and breeding in relation to chick production in Slovakia during the period 1978–2002. First arrival dates ranged from 5th March to 30th April, and hatching dates varied between 26th April and 8th July. Generally, early arriving pairs started breeding earlier and a shorter interval between the arrival of the first partner and breeding, expressed here as hatching date, resulted in higher breeding success.

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