Migration and winter distribution of Iberian and central European black storks <i>Ciconia nigra</i> moving to Africa across the Strait of Gibraltar: a comparative study

Cano, Luis Santiago; Tellería, José Luis

doi:10.1111/j.1600-048x.2012.05824.x

Cited by 9 publications

(8 citation statements)

References 33 publications

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“…) in Belgium (4), Czech Republic (2), France (9), Luxembourg (3), Portugal (3) and Spain (4) between 1998 and 2010. Routes of the birds moving through Iberia were provided by l'Office National des Forêts (ONF), Station Ornithologique du Bec d'Allier (SOBA), Nature Nièvre, Flying Over Natura 2000 project and several Iberian projects (Cano and Tellería ). These autumnal pathways and 12 spring return routes were used to establish the winter period (see above).…”

Section: Methodsmentioning

confidence: 99%

“…The black stork Ciconia nigra is a long‐distance migratory bird that, in the western Palaearctic, shows a migratory divide (Bobek et al ). The western route crosses Europe and northern Africa to reach the west and central Sahel (Jadoul et al , Bobek et al , Chevallier et al , Cano and Tellería ). In the last two decades, an increasing number of individuals remain to winter in the Iberian Peninsula (Cano , ).…”

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confidence: 99%

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Geographical and environmental factors affecting the distribution of wintering black storks Ciconia nigra in the Iberian Peninsula

Cano¹,

Pacheco

Refoyo³

et al. 2014

Journal of Avian Biology

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Here we explore the environmental and geographical factors affecting the winter distribution of the black stork Ciconia nigra in the Iberian Peninsula, where an increasing number of individuals have remained to winter in the last two decades. We recorded 179 locations of 54 ringed individuals between 1988 and 2011 to map the species habitat suitability with MaxEnt, a machine‐learning technique based on the principle of maximum entropy. The migratory movements of 25 birds equipped with satellite transmitters were used to define the autumnal migratory flyway used by most storks crossing the Peninsula as well as to define the wintering period. The aim was to test if the number of wintering storks was positively correlated to habitat suitability and negatively correlated to the flyway distance. Data provided by an extensive count across Portugal and Spain during the 2012–2013 winter supported the findings that black storks were more abundant in areas of high habitat suitability close to the migratory flyway. This agrees with previous evidence on the role of migratory flyways in determining the distribution of some wintering birds in Iberia. A gap analysis reflected that just 12.3% of the suitable areas and 18.8% of individuals recorded during the 2012–2013 winter were included within the Special Protection Areas network of Portugal and Spain. Most of these birds were crowded in unprotected areas covered by rice fields (68% of individuals), a key habitat for the species.

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Section: Methodsmentioning

confidence: 99%

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confidence: 99%

Geographical and environmental factors affecting the distribution of wintering black storks Ciconia nigra in the Iberian Peninsula

Cano¹,

Pacheco

Refoyo³

et al. 2014

Journal of Avian Biology

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“…Thus, the link between movement ecology and biodiversity is a key factor in understanding ecological and evolutionary processes and in improving the efficacy of conservation efforts12. Several recent examples show the importance of movement ecology studies in topics such as age-related aspects of migration3, the energetics and timing of migration4, the conservation of migratory flyways5, the selection of stopover, wintering and breeding areas6789, the influence of environmental conditions10, transboundary management policies11 and foraging behaviour12.…”

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confidence: 99%

Spatial and temporal movements in Pyrenean bearded vultures (Gypaetus barbatus): Integrating movement ecology into conservation practice

Margalida

Pérez‐García

Afonso³

et al. 2016

Sci Rep

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Understanding the movement of threatened species is important if we are to optimize management and conservation actions. Here, we describe the age and sex specific spatial and temporal ranging patterns of 19 bearded vultures Gypaetus barbatus tracked with GPS technology. Our findings suggest that spatial asymmetries are a consequence of breeding status and age-classes. Territorial individuals exploited home ranges of about 50 km2, while non-territorial birds used areas of around 10 000 km2 (with no seasonal differences). Mean daily movements differed between territorial (23.8 km) and non-territorial birds (46.1 km), and differences were also found between sexes in non-territorial birds. Daily maximum distances travelled per day also differed between territorial (8.2 km) and non-territorial individuals (26.5 km). Territorial females moved greater distances (12 km) than males (6.6 km). Taking into account high-use core areas (K20), Supplementary Feeding Sites (SFS) do not seem to play an important role in the use of space by bearded vultures. For non-territorial and territorial individuals, 54% and 46% of their home ranges (K90), respectively, were outside protected areas. Our findings will help develop guidelines for establishing priority areas based on spatial use, and also optimize management and conservation actions for this threatened species.

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“…European Black Storks are long-distance migrants, reaching their wintering grounds either on a westerly route across Gibraltar to Western Africa or on an easterly via the Bosphorus and Israel to Eastern Africa. Individuals from the northern part of the species range undertake long journeys of up to 6000-7000 km each fall and spring (Sellis 2012;Tamas 2012;Cano and Tellería 2013;Elliott et al 2014a).…”

Section: Introductionmentioning

confidence: 98%

Recent impact of DDT contamination on Black Stork eggs

et al. 2015

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The contamination with DDT (1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane) and its breakdown products as a potential cause of population decline of Black Stork has been studied in Latvia since 2008. In order to test if contamination is local or widely distributed we collected failed eggs from nests also in Estonia, Belarus, Poland, Czech Republic, Germany and Belgium. DDT or its breakdown products were found in all analysed eggs. The ratio of p,p 0 -DDT as a proportion of all DDT products increased during the years of our research. Since the Black Stork has so far not been mentioned as a species affected by DDT we do not have information about its critical contamination effect levels. However, we also present data suggesting that DDT contamination might have affected Black Stork historically. Current data suggest that the reduction of eggshell thickness has not (yet) reached the levels described as critical for other affected species. However, we found a significant reduction of egg volumes, which in turn negatively affects hatching, as eggs below a threshold size fail to hatch. The ratio of small eggs versus normal eggs has increased by almost 10 % in recent years and is strikingly higher as compared to the pre-DDT period. There is also a significant correlation between eggs of reduced size and their respective DDE (1,1-bis(4-chlorophenyl)-2,2-dichloroethene) values.

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Migration and winter distribution of Iberian and central European black storks Ciconia nigra moving to Africa across the Strait of Gibraltar: a comparative study

Cited by 9 publications

References 33 publications

Geographical and environmental factors affecting the distribution of wintering black storks Ciconia nigra in the Iberian Peninsula

Geographical and environmental factors affecting the distribution of wintering black storks Ciconia nigra in the Iberian Peninsula

Spatial and temporal movements in Pyrenean bearded vultures (Gypaetus barbatus): Integrating movement ecology into conservation practice

Recent impact of DDT contamination on Black Stork eggs

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