Climate on Wintering Grounds Drives Spring Arrival of Short-­Distance Migrants to the Upper Midwest

2015 ◽  
pp. 98-111
Keyword(s):  
Short Distance ◽  
Upper Midwest ◽  
Wintering Grounds ◽  
Spring Arrival

scholarly journals Climate change effects on migration phenology may mismatch brood parasitic cuckoos and their hosts

2009 ◽  
Vol 5 (4) ◽  
pp. 539-541 ◽  
Author(s):  
Nicola Saino ◽  
Diego Rubolini ◽  
Esa Lehikoinen ◽  
Leonid V. Sokolov ◽  
Andrea Bonisoli-Alquati ◽  
...  
Keyword(s):  
Climate Change ◽  
Short Distance ◽  
Life Cycles ◽  
Trophic Levels ◽  
Negative Consequences ◽  
Long Distance ◽  
Climate Change Effects ◽  
Parasitism Rates ◽  
Migration Phenology ◽  
Spring Arrival

Phenological responses to climate change vary among taxa and across trophic levels. This can lead to a mismatch between the life cycles of ecologically interrelated populations (e.g. predators and prey), with negative consequences for population dynamics of some of the interacting species. Here we provide, to our knowledge, the first evidence that climate change might disrupt the association between the life cycles of the common cuckoo ( Cuculus canorus ), a migratory brood parasitic bird, and its hosts. We investigated changes in timing of spring arrival of the cuckoo and its hosts throughout Europe over six decades, and found that short-distance, but not long-distance, migratory hosts have advanced their arrival more than the cuckoo. Hence, cuckoos may keep track of phenological changes of long-distance, but not short-distance migrant hosts, with potential consequences for breeding of both cuckoo and hosts. The mismatch to some of the important hosts may contribute to the decline of cuckoo populations and explain some of the observed local changes in parasitism rates of migratory hosts.

scholarly journals February precipitation in the wintering grounds of the lesser whitethroat, Sylvia curruca : is it a cue for migration onset?

2017 ◽  
Vol 4 (2) ◽  
pp. 160755 ◽  
Author(s):  
Irith Aloni ◽  
Shai Markman ◽  
Yaron Ziv
Keyword(s):  
Regression Models ◽  
Arrival Time ◽  
Weather Conditions ◽  
Negative Effects ◽  
Wintering Grounds ◽  
Migration Patterns ◽  
Habitat Productivity ◽  
Migration Phenology ◽  
Spring Arrival ◽  
And Migration

Numerous studies report shifts in bird migration phenology, presumably owing to global warming. However, most studies focus on migration patterns in the Northern Hemisphere. In this study, we investigated associations between weather conditions in African wintering grounds of the lesser whitethroat, Sylvia curruca, and spring arrival time in Eilat, Israel. Using multivariate regression models, we analysed a 30-year dataset in order to examine correlations between median springtime arrival and 46 climate variables of the wintering quarters. The model obtained exhibited a highly statistical fit, involving mean precipitation in February and March with negative effects and number of wet days during November–February. February precipitation levels were also the major factor associated with the interquartile range of arrival time. Interestingly and contrary to published results, annual or seasonal precipitation showed no correlation with spring arrival time, nor did temperature. Moreover, winter in this region falls into dry season with negligible rainfall quantities. Hence, it is unlikely that precipitation effect on habitat productivity is a driving force of migration, as suggested by other studies. Instead, we propose that precipitation in February acts as a cue for the birds, indicating the approach of spring and migration time.

scholarly journals Changes in spring arrival dates of Central European bird species over the past 100 years

2020 ◽  
Vol 66 (3) ◽  
Author(s):  
László Bozó ◽  
Tibor Csörgő
Keyword(s):  
Short Distance ◽  
Recent Observation ◽  
Bird Species ◽  
Spring Migration ◽  
Observation Data ◽  
Long Distance ◽  
Endogenous Rhythms ◽  
The Past ◽  
Arrival Dates ◽  
Spring Arrival

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.

scholarly journals Avian population consequences of climate change are most severe for long-distance migrants in seasonal habitats

2009 ◽  
Vol 277 (1685) ◽  
pp. 1259-1266 ◽  
Author(s):  
Christiaan Both ◽  
Chris A. M. Van Turnhout ◽  
Rob G. Bijlsma ◽  
Henk Siepel ◽  
Arco J. Van Strien ◽  
...  
Keyword(s):  
Climate Change ◽  
Short Distance ◽  
Western Europe ◽  
Northern Europe ◽  
Population Declines ◽  
Long Distance ◽  
Population Consequences ◽  
Declining Populations ◽  
Spring Arrival ◽  
Seasonal Habitats

One consequence of climate change is an increasing mismatch between timing of food requirements and food availability. Such a mismatch is primarily expected in avian long-distance migrants because of their complex annual cycle, and in habitats with a seasonal food peak. Here we show that insectivorous long-distance migrant species in The Netherlands declined strongly (1984–2004) in forests, a habitat characterized by a short spring food peak, but that they did not decline in less seasonal marshes. Also, within generalist long-distance migrant species, populations declined more strongly in forests than in marshes. Forest-inhabiting migrant species arriving latest in spring declined most sharply, probably because their mismatch with the peak in food supply is greatest. Residents and short-distance migrants had non-declining populations in both habitats, suggesting that habitat quality did not deteriorate. Habitat-related differences in trends were most probably caused by climate change because at a European scale, long-distance migrants in forests declined more severely in western Europe, where springs have become considerably warmer, when compared with northern Europe, where temperatures during spring arrival and breeding have increased less. Our results suggest that trophic mismatches may have become a major cause for population declines in long-distance migrants in highly seasonal habitats.

Intrarural variation in mental health status and help-seeking of veterans in the upper midwest.

2018 ◽  
Vol 42 (3-4) ◽  
pp. 161-173
Author(s):  
Sarah Beehler ◽  
Sy Han (Steven) Chiou ◽  
B R. Balmer ◽  
Xuan Li
Keyword(s):  
Mental Health ◽  
Health Status ◽  
Help Seeking ◽  
Mental Health Status ◽  
Upper Midwest
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