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 Weather at the winter and stopover areas determines spring migration onset, progress, and advancements in Afro-Palearctic migrant birds

2020 ◽  
Vol 117 (29) ◽  
pp. 17056-17062 ◽  
Author(s):  
Birgen Haest ◽  
Ommo Hüppop ◽  
Franz Bairlein
Keyword(s):  
Climate Change ◽  
Migratory Birds ◽  
Spring Migration ◽  
Long Distance ◽  
Spring Phenology ◽  
Migration Timing ◽  
Climate Change Effects ◽  
Breeding Grounds ◽  
Migration Phenology ◽  
Exogenous Factors

Climate change causes changes in the timing of life cycle events across all trophic groups. Spring phenology has mostly advanced, but large, unexplained, variations are present between and within species. Each spring, migratory birds travel tens to tens of thousands of kilometers from their wintering to their breeding grounds. For most populations, large uncertainties remain on their exact locations outside the breeding area, and the time spent there or during migration. Assessing climate (change) effects on avian migration phenology has consequently been difficult due to spatial and temporal uncertainties in the weather potentially affecting migration timing. Here, we show for six trans-Saharan long-distance migrants that weather at the wintering and stopover grounds almost entirely (∼80%) explains interannual variation in spring migration phenology. Importantly, our spatiotemporal approach also allows for the systematic exclusion of influences at other locations and times. While increased spring temperatures did contribute strongly to the observed spring migration advancements over the 55-y study period, improvements in wind conditions, especially in the Maghreb and Mediterranean, have allowed even stronger advancements. Flexibility in spring migration timing of long-distance migrants to exogenous factors has been consistently underestimated due to mismatches in space, scale, time, and weather variable type.

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.

Changes in migration phenology and biometrical traits of Reed, Marsh and Sedge Warblers

2012 ◽  
Vol 7 (1) ◽  
pp. 115-125 ◽  
Author(s):  
Szilvia Kovács ◽  
Péter Fehérvári ◽  
Krisztina Nagy ◽  
Andrea Harnos ◽  
Tibor Csörgő
Keyword(s):  
Body Mass ◽  
Population Level ◽  
Long Distance ◽  
Stopover Site ◽  
Sedge Warbler ◽  
Global Environmental ◽  
Migration Phenology ◽  
Spring Arrival ◽  
Migration Strategies ◽  
Migrant Birds

AbstractGlobal environmental processes like climate change could severely affect population level migratory behaviour of long range migrant birds. We analyzed changes in migration phenology and biometrics of three closely-related long-distance migrant Acrocephalus species. We used the records of 12 063 Sedge, 12 913 Reed, and 5 409 Marsh Warblers caught and ringed between 1989–2009, at a Hungarian stopover site. Quantile regressions were used to analyse the changes in spring and autumn migration phenology. Median spring arrival date of Sedge and Reed Warblers shifted 6.5 and 7.5 days earlier, respectively. Autumn arrival of all species shifted one (Reed and Marsh Warblers) or two (Sedge Warbler) weeks later. Mean body mass of adult Reed and Marsh Warblers decreased in spring (by 0.3 and 0.2 grams, respectively) and in autumn (by 0.8 and 0.2 grams, respectively) while body mass of adult Sedge Warblers decreased only in autumn (by 0.4 grams). Mean wing length of all species increased significantly (range of change: 0.6–1 mm). Despite the fact that the studied species are closely related, all three have remarkably different migration strategies. However, similar patterns can be observed in the studied parameters, indicating that global processes may have general effects on these species, albeit through markedly different mechanisms.

scholarly journals Dams and the fish fauna of the Neotropical region: impacts and management related to diversity and fisheries

2008 ◽  
Vol 68 (4 suppl) ◽  
pp. 1119-1132 ◽  
Author(s):  
AA. Agostinho ◽  
FM. Pelicice ◽  
LC. Gomes
Keyword(s):  
Fish Assemblages ◽  
Fish Fauna ◽  
Neotropical Region ◽  
Life Cycles ◽  
Fish Diversity ◽  
Negative Consequences ◽  
Long Distance ◽  
Management Actions ◽  
Composition And Structure ◽  
Almost All

Reservoirs have been built in almost all of the hydrographic basins of Brazil. Their purposes include water supply for cities, irrigation and mainly, generation of electricity. There are more than 700 large dams and associated reservoirs in the large rivers of the country. These reservoirs favor local and regional economic development, but they also bring serious and irreversible alterations in the natural hydrologic regime of rivers, affecting habitat quality and the dynamics of the biota. In the impounded area, the main impact is the change from lotic to lentic water, which influences aquatic fauna, including fishes. Impacts of reservoirs present relevant spatiotemporal variations. Immediately after reservoir formation, fish species richness usually increases due to incorporation of surrounding habitats, but richness decreases as reservoirs age. However, impacts downstream of dams appear to be similar or stronger than those that occur within the reservoir. Dams promote discharge control, altering the seasonal cycles of floods. These effects are augmented when dams are constructed in cascades. Therefore, dams profoundly influence composition and structure of fish assemblages. Most affected species are the rheophilics and long distance migratory that require distinct habitats to fulfill their life cycles. Populations of migratory species may collapse or even disappear in intensely regulated stretches. Management actions taken to minimize impacts of dams in Brazil historically considered construction of fish passages, fishery control and stocking. The results of these actions are questionable and/or with clear failures. In this paper, we give emphasis to the Paraná River basin, the most affected by dams in Brazil. We describe some patterns in the alteration and decline in fish diversity in areas influenced by dams. We also discuss negative consequences in the fishery and ecosystems functioning. Finally, we argue the relevance and the success of the management actions taken and present some suggestions to improve conservation of the ichthyofauna in South American basins influenced by dams.

scholarly journals Bird number dynamics during the post-breeding period at the Tömörd Bird Ringing Station, western Hungary

The Ring ◽  
2017 ◽  
Vol 39 (1) ◽  
pp. 23-82
Author(s):  
József Gyurácz ◽  
Péter Bánhidi ◽  
József Góczán ◽  
Péter Illés ◽  
Sándor Kalmár ◽  
...  
Keyword(s):  
Temporal Pattern ◽  
Short Distance ◽  
Breeding Period ◽  
Migratory Species ◽  
Long Distance ◽  
Increasing Trend ◽  
Number Dynamics ◽  
Migration Phenology ◽  
Breeding Migration ◽  
Median Date

Abstract The fieldwork, i.e. catching and ringing birds using mist-nets, was conducted at Tömörd Bird Ringing Station in western Hungary during the post-breeding migration seasons in 1998-2016. Altogether, 106,480 individuals of 133 species were ringed at the station. The aim of this paper was to publish basic information on passerine migration at this site. Migration phenology was described through annual and daily capture frequencies. Furthermore, we provide the median date of the passage, the date of the earliest or latest capture, the peak migration season within the study period, and the countries where the birds monitored at the site were ringed or recovered abroad. To compare the catching dynamics for the fifty species with total captures greater than 200, a reference period was defined: from 5 Aug. to 5 Nov. 2001-2016. Some non-passerines that are more easily caught with mist-nets or that are caught occasionally were listed as well. The two superdominant species, the European Robin and the Eurasian Blackcap, with 14,377 and 13,926 total captures, made up 27% of all ringed individuals. Among the fifty species analysed, there were ten species with a decreasing trend, five species with an increasing trend and thirty-five species with a stable (or uncertain) trend in their numbers from 2001 to 2016. The temporal pattern of migration of long-distance migrants was different from that of the medium- and short-distance migratory species.

scholarly journals Climate-induced phenology shifts linked to range expansions in species with multiple reproductive cycles per year

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Callum J. Macgregor ◽  
Chris D. Thomas ◽  
David B. Roy ◽  
Mark A. Beaumont ◽  
James R. Bell ◽  
...  
Keyword(s):  
Climate Change ◽  
Adult Emergence ◽  
Life Cycles ◽  
Negative Consequences ◽  
Annual Reproductive Cycle ◽  
Spring Temperature ◽  
Habitat Specialisation ◽  
Reproductive Cycles ◽  
Abundance And Distribution ◽  
Distribution Trends

Abstract Advances in phenology (the annual timing of species’ life-cycles) in response to climate change are generally viewed as bioindicators of climate change, but have not been considered as predictors of range expansions. Here, we show that phenology advances combine with the number of reproductive cycles per year (voltinism) to shape abundance and distribution trends in 130 species of British Lepidoptera, in response to ~0.5 °C spring-temperature warming between 1995 and 2014. Early adult emergence in warm years resulted in increased within- and between-year population growth for species with multiple reproductive cycles per year (n = 39 multivoltine species). By contrast, early emergence had neutral or negative consequences for species with a single annual reproductive cycle (n = 91 univoltine species), depending on habitat specialisation. We conclude that phenology advances facilitate polewards range expansions in species exhibiting plasticity for both phenology and voltinism, but may inhibit expansion by less flexible species.

scholarly journals Rapid change in host use of the common cuckoo Cuculus canorus linked to climate change

2010 ◽  
Vol 278 (1706) ◽  
pp. 733-738 ◽  
Author(s):  
A. P. Møller ◽  
N. Saino ◽  
P. Adamík ◽  
R. Ambrosini ◽  
A. Antonov ◽  
...  
Keyword(s):  
Climate Change ◽  
Short Distance ◽  
Rapid Change ◽  
Host Use ◽  
Cuculus Canorus ◽  
Common Cuckoo ◽  
Spring Temperature ◽  
Long Distance ◽  
Before And After ◽  
The Common

Parasites require synchrony with their hosts so if host timing changes with climate change, some parasites may decline and eventually go extinct. Residents and short-distance migrant hosts of the brood parasitic common cuckoo, Cuculus canorus , have advanced their phenology in response to climate change more than long-distance migrants, including the cuckoo itself. Because different parts of Europe show different degrees of climate change, we predicted that use of residents or short-distance migrants as hosts should have declined in areas with greater increase in spring temperature. Comparing relative frequency of parasitism of the two host categories in 23 European countries before and after 1990, when spring temperatures in many areas had started to increase, we found that relative parasitism of residents and short-distance migrants decreased. This change in host use was positively related to increase in spring temperature, consistent with the prediction that relative change in phenology for different migrant classes drives host-use patterns. These findings are consistent with the hypothesis that climate change affects the relative abundance of different host races of the common cuckoo.

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 ENVIRONMENTAL DEGRADATION AND PATTERNS OF HUMAN MIGRATION EVIDENCE FROM SOUTH ASIA AND SOUTH-EAST ASIA

2019 ◽  
Vol IV (I) ◽  
pp. 40-50
Author(s):  
Ayaz Ali Shah ◽  
Muhammad Saleem ◽  
Tila Mohammad
Keyword(s):  
Climate Change ◽  
Environmental Degradation ◽  
Short Distance ◽  
Fossil Fuel ◽  
Human Migration ◽  
Time Data ◽  
Long Distance ◽  
Dual Nature ◽  
Secondary Sources ◽  
Change Event

This paper is about how and by what ways climate change affects human migration. The world at large is expected to face crises of dual nature. In the first place, excessive fossil fuel consumption would result in environmental degradation. Among others, people would be faced with serious food crises as well as reduced income. In the wake of environmental change, people will migrate in search of better income prospects and food security. There is no doubt that there a strong but direct relationship between climate change and human displacement. This displacement may either be long distance or a short distance in other cases. If it is a short distance, there is a possibility that it will be temporary, and as soon as the climate change event is over, people may return back to their habitats. It may be a long-distance if climate change-related event takes place on regular intervals over a long period of time. Data is collected through secondary sources.

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