855 resultados para Garden birds


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Many animal-pollinated plant species have been introduced to non-native regions without their usual pollinators. Nevertheless, some of these alien species managed to establish reproducing naturalized populations, which might negatively affect native plants. Recent studies have shown that many naturalized alien species can readily attract native pollinators. However, it is not known whether alien species that have not established naturalized populations are less successful in attracting pollinators. Therefore, we tested whether flower-visitation rates are lower for non-naturalized aliens than for naturalized alien and native species. We conducted a comparative study on flower visitation of 185 native, 37 naturalized alien and 224 non-naturalized alien plant species in the Botanical Garden of Bern, Switzerland. Our phylogenetically corrected analyses showed that non-naturalized alien species received fewer flower visitors than both naturalized alien and native species. Native, naturalized alien and non-naturalized alien species were visited by similar flower-visitor communities. Furthermore, among the naturalized alien species, the ones with a broader distribution range in Switzerland received a more diverse set of flower visitors. Although it has been suggested that most alien plants can readily integrate into native plant–pollinator networks, we show evidence that the capacity to attract flower visitors in non-native regions is different for naturalized and non-naturalized alien plants. Therefore, we conclude that successful naturalization of alien plants may be related to flower visitation.

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Boberach: Mit Titelblattillustration: Ballett der Petenten mit Pickelhaube, darüber Spruchband: O kehre wieder!. - Welsch (Projektbearbeiter): Schilderung einer (fiktiven) Versammlung von Berliner Tänzerinnen, die für die Rückberufung des Gardekorps in die Hauptstadt petitionieren. Mit überwiegend schlüpfrigem Inhalt

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Welsch (Projektbearbeiter): Wegen der notwendigen Bereithaltung der Nationalgarde werden die Wahlen bis zum 21. Juni 1848 11 Uhr vormittags verlängert; anschließend erfolgt die Auszählung

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Welsch (Projektbearbeiter): Bekanntgabe der Musterungstermine zur Säuberung der Akademischen Legion von denjenigen Mitgliedern, die nur deswegen in sie eintraten, um dem Dienst in der Nationalgarde zu entgehen

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Welsch (Projektbearbeiter): Warnung vor Angriffen der Nationalgarde auf das vor dem Linienwall stehende Militär und Aufruf, sich im Interesse der Stadt Wien und ihrer Bevölkerung "so lange als möglich defensiv zu verhalten"

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Welsch (Projektbearbeiter): Der polnische Generalleutnant Bem übernimmt die Organisation der Verteidigung Wiens

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Welsch (Projektbearbeiter): Verbot des Tragens geladener Waffen für diejenigen Mobilgardisten, welche nicht direkt vor dem Feind Dienst tun

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Welsch (Projektbearbeiter): Exemtion der Wiener Gemeinderäte von der Verpflichtung zum Wehrdienst in der Nationalgarde

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Signatur des Originals: S 36/F03826

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Signatur des Originals: S 36/F08621

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Signatur des Originals: S 36/F08622

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Signatur des Originals: S 36/F11272