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  • Springer Science and Business Media LLC  (14)
  • 1
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2016
    In:  Frontiers in Zoology Vol. 13, No. 1 ( 2016-12)
    In: Frontiers in Zoology, Springer Science and Business Media LLC, Vol. 13, No. 1 ( 2016-12)
    Type of Medium: Online Resource
    ISSN: 1742-9994
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2016
    detail.hit.zdb_id: 2164409-3
    SSG: 12
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  • 2
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2016
    In:  Behavioral Ecology and Sociobiology Vol. 70, No. 4 ( 2016-4), p. 449-458
    In: Behavioral Ecology and Sociobiology, Springer Science and Business Media LLC, Vol. 70, No. 4 ( 2016-4), p. 449-458
    Type of Medium: Online Resource
    ISSN: 0340-5443 , 1432-0762
    RVK:
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2016
    detail.hit.zdb_id: 1458476-1
    SSG: 12
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  • 3
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2011
    In:  Oecologia Vol. 166, No. 2 ( 2011-6), p. 327-336
    In: Oecologia, Springer Science and Business Media LLC, Vol. 166, No. 2 ( 2011-6), p. 327-336
    Type of Medium: Online Resource
    ISSN: 0029-8549 , 1432-1939
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2011
    detail.hit.zdb_id: 1462019-4
    detail.hit.zdb_id: 123369-5
    SSG: 12
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  • 4
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2016
    In:  Oecologia Vol. 182, No. 2 ( 2016-10), p. 347-356
    In: Oecologia, Springer Science and Business Media LLC, Vol. 182, No. 2 ( 2016-10), p. 347-356
    Type of Medium: Online Resource
    ISSN: 0029-8549 , 1432-1939
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2016
    detail.hit.zdb_id: 1462019-4
    detail.hit.zdb_id: 123369-5
    SSG: 12
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  • 5
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2016
    In:  Oecologia Vol. 180, No. 1 ( 2016-1), p. 67-76
    In: Oecologia, Springer Science and Business Media LLC, Vol. 180, No. 1 ( 2016-1), p. 67-76
    Type of Medium: Online Resource
    ISSN: 0029-8549 , 1432-1939
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2016
    detail.hit.zdb_id: 1462019-4
    detail.hit.zdb_id: 123369-5
    SSG: 12
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  • 6
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2020
    In:  Oecologia Vol. 192, No. 1 ( 2020-01), p. 43-54
    In: Oecologia, Springer Science and Business Media LLC, Vol. 192, No. 1 ( 2020-01), p. 43-54
    Abstract: Maternal effects affect offspring phenotype and fitness. However, the roles of offspring sex-specific sensitivity to maternal glucocorticoids and sex-biased maternal investment remain unclear. It is also uncertain whether telomere length (a marker associated with lifespan) depends on early growth in a sex-specific manner. We assessed whether maternal traits including corticosterone (CORT; the main avian glucocorticoid) and in ovo growth rate are sex-specifically related to offspring CORT exposure, relative telomere length (RTL) and body condition in eiders ( Somateria mollissima ). We measured feather CORT (fCORT), RTL and body condition of newly hatched ducklings, and growth rate in ovo was expressed as tarsus length at hatching per incubation duration. Maternal traits included baseline plasma CORT, RTL, body condition and breeding experience. We found that fCORT was negatively associated with growth rate in daughters, while it showed a positive association in sons. Lower offspring fCORT was associated with higher maternal baseline plasma CORT, and fCORT was higher in larger clutches and in those hatching later. The RTL of daughters was negatively associated with maternal RTL, whereas that of males was nearly independent of maternal RTL. Higher fCORT in ovo was associated with longer RTL at hatching in both sexes. Duckling body condition was mainly explained by egg weight, and sons had a slightly lower body condition. Our correlational results suggest that maternal effects may have heterogeneous and even diametrically opposed effects between the sexes during early development. Our findings also challenge the view that prenatal CORT exposure is invariably associated with shorter telomeres.
    Type of Medium: Online Resource
    ISSN: 0029-8549 , 1432-1939
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2020
    detail.hit.zdb_id: 1462019-4
    detail.hit.zdb_id: 123369-5
    SSG: 12
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  • 7
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2017
    In:  Scientific Reports Vol. 7, No. 1 ( 2017-01-27)
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 7, No. 1 ( 2017-01-27)
    Abstract: Human actions have led to loss and degradation of wetlands, impairing their suitability as habitat especially for waterbirds. Such negative effects may be mitigated through habitat management. To date scientific evidence regarding the impacts of these actions remains scarce. We studied guild specific abundances of breeding and staging birds in response to habitat management on 15 Finnish wetlands. In this study management actions comprised several means of vegetation removal to thwart overgrowth. Management cost efficiency was assessed by examining the association between site-specific costs and bird abundances. Several bird guilds exhibited positive connections with both habitat management as well as with invested funds. Most importantly, however, red-listed species and species with special conservation concern as outlined by the EU showed positive correlations with management actions, underlining the conservation value of wetland management. The results suggest that grazing was especially efficient in restoring overgrown wetlands. As a whole this study makes it clear that wetland habitat management constitutes a feasible conservation tool. The marked association between invested funds and bird abundance may prove to be a valuable tool for decision makers when balancing costs and impact of conservation measures against one another.
    Type of Medium: Online Resource
    ISSN: 2045-2322
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2017
    detail.hit.zdb_id: 2615211-3
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  • 8
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2019
    In:  Scientific Reports Vol. 9, No. 1 ( 2019-08-14)
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 9, No. 1 ( 2019-08-14)
    Abstract: The direction of predator-mediated selection on brain size is debated. However, the speed and the accuracy of performing a task cannot be simultaneously maximized. Large-brained individuals may be predisposed to accurate but slow decision-making, beneficial under high predation risk, but costly under low risk. This creates the possibility of temporally fluctuating selection on brain size depending on overall predation risk. We test this idea in nesting wild eider females ( Somateria mollissima ), in which head volume is tightly linked to brain mass ( r 2  = 0.73). We determined how female relative head volume relates to survival, and characterized the seasonal timing of predation. Previous work suggests that relatively large-brained and small-brained females make slow versus fast nest-site decisions, respectively, and that predation events occur seasonally earlier when predation is severe. Large-brained, late-breeding females may therefore have higher survival during high-predation years, but lower survival during safe years, assuming that predation disproportionately affects late breeders in such years. Relatively large-headed females outsurvived smaller-headed females during dangerous years, whereas the opposite was true in safer years. Predation events occurred relatively later during safe years. Fluctuations in the direction of survival selection on relative brain size may therefore arise due to brain-size dependent breeding phenology.
    Type of Medium: Online Resource
    ISSN: 2045-2322
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2019
    detail.hit.zdb_id: 2615211-3
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  • 9
    In: Journal of Ornithology, Springer Science and Business Media LLC, Vol. 164, No. 1 ( 2023-01), p. 101-114
    Abstract: Auf die Ränder kommt es an: Die Bedeutung von Ackerrändern als Brutraum für Vögel in einer landwirtschaftlich intensiv genutzten Landschaft . Die Intensivierung der Landwirtschaft hat sich erheblich auf die Strukturierung der Lebensräume von Agrarlandschaften ausgewirkt und ist eine der Hauptursachen für den Rückgang der biologischen Vielfalt, insbesondere bei den Vögeln der Agrarlandschaft. Man geht davon aus, dass Vögel die Entwicklungen anderer Aspekte der biologischen Vielfalt gut widerspiegeln und deshalb oft als Indikatorarten betrachtet werden können. Wir untersuchten die Nutzung des Bruthabitats des Jagdfasans ( Phasianus colchicus ) in einem von Getreide dominierten Ackerland in Südfinnland. Die Elterntiere zogen Feldraine in Hinblick auf deren Verfügbarkeit deutlich vor. Die Bedeutung der Feldränder wurde dadurch betont, dass 68% der Fasane in Getreidefeldern innerhalb einer 25 m breiten Zone vom Feldrand aus beobachtet wurden, obwohl deren Verfügbarkeit nur 40% der Feldfläche ausmachte. Unsere Ergebnisse unterstützen die Annahme, dass selbst in landwirtschaftlich intensiv genutzten Strukturen Feldränder und deren Nahbereiche als mögliche Reservoirs für die biologische Vielfalt dienen. Die Ausweitung von Feldrainen kann eine wirksame Art der Bewirtschaftung sein, um den Bruterfolg von Fasanen zu erhöhen und gleichzeitig die Artenvielfalt in der Agrarlandschaft zu fördern. Die Erfassung der wichtigsten Lebensräume und derjenigen Landschaftsmerkmale, die gleichzeitig die biologische Vielfalt und auch eine effektive Nahrungsmittelproduktion ermöglichen, ist von entscheidender Bedeutung, wenn der andauernde Rückgang der biologischen Vielfalt aufgehalten werden soll.
    Type of Medium: Online Resource
    ISSN: 2193-7192 , 2193-7206
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 2134595-8
    SSG: 12
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  • 10
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2021
    In:  Journal of Ornithology Vol. 162, No. 2 ( 2021-04), p. 497-509
    In: Journal of Ornithology, Springer Science and Business Media LLC, Vol. 162, No. 2 ( 2021-04), p. 497-509
    Abstract: Glukokortikoide, zustandsabhängige Reproduktionsinvestition und -erfolge bei Gefahr bei einer langlebigen Vogelart Glukokortikoid-Hormone können Trade-offs zwischen der gegenwärtigen und zukünftigen Reproduktion vermitteln. Das Verstehen ihrer Rolle wird jedoch durch das Prädationsrisiko erschwert, dass gleichzeitig den Wert der gegenwärtigen Reproduktionsinvestition beeinflusst und den Glukokortikoidspiegel erhöht. Hier klären wir diese Fragen bei Weibchen der langlebigen Eiderente ( Somateria mollissima ), indem wir untersuchten, wie die gegenwärtige Investition in die Reproduktion (Gelegegröße) und der Schlupferfolg mit dem Gehalt an fäkalen Glukokortikoid-Metaboliten (engl. faecal glucocorticoid metabolite , fGCM) und dem Restreproduktionswert (minimale Bruterfahrung, Körperkondition, relative Telomerlänge) unter räumlich variablem Prädationsrisiko zusammenhängen. Unsere Ergebnisse zeigten eine positive Beziehung zwischen dem koloniespezifischen Prädationsrisiko und dem mittleren koloniespezifischen fGCM-Spiegel. Die Gelegegröße und der fGCM-Spiegel der Weibchen waren nur bei starker Nestprädation und bei Weibchen mit guter Körperkondition, die nachweislich eine längere Lebenserwartung hatten, negativ korreliert. Weiterhin fanden wir heraus, dass jüngere Weibchen mit längeren Telomeren kleinere Gelege hatten. Der Abfall im Schlupferfolg mit zunehmendem fGCM-Spiegel war bei hohem Nestprädationsrisiko am wenigsten ausgeprägt, was darauf hindeutet, dass erhöhte fGCM-Spiegel den Weibchen unter solchen Bedingungen einen gewissen Reproduktionserfolg sichern können. Der Schlupferfolg war positiv mit der Körperkondition der Weibchen, der relativen Telomerlänge (insbesondere bei jüngeren Weibchen) und dem Mindestalter der Weibchen (insbesondere bei schwachem Prädationsrisiko) assoziiert, was den Nutzen dieser Messgrößen als Indikatoren für die individuelle Qualität zeigte. In Übereinstimmung mit dem Trade-off zwischen gegenwärtiger und zukünftiger Reproduktion zeigen unsere Ergebnisse, dass ein hohes Potenzial für zukünftige Brutmöglichkeiten und ein verstärktes Prädationsrisiko das Gleichgewicht zugunsten von Investition in die zukünftige Reproduktion verschieben, wobei Glukokortikoide bei der Lösung dieses Trade-offs eine Rolle spielen.
    Type of Medium: Online Resource
    ISSN: 2193-7192 , 2193-7206
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 2134595-8
    SSG: 12
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