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Songbirds promote connectivity between riparian galleries and adjacent habitats
Ecological Research ( IF 2 ) Pub Date : 2020-10-09 , DOI: 10.1111/1440-1703.12180
Ana Patrícia Almeida 1 , Marisa Gomes 1, 2 , João E. Rabaça 1, 3 , Jaime A. Ramos 2
Affiliation  

Riparian galleries are among the most vulnerable habitats in the world and are well known for their importance to the most specialized riparian bird species. In this study, we analyzed songbird composition, songbird diet, trophic ecology and seed dispersal in riparian galleries and adjacent Montado matrices in southern Portugal to address the importance of birds in promoting the connectivity between riparian galleries and adjacent habitats. We used fecal samples to compare diet, and blood samples to compare nitrogen stable isotopes from birds in these two habitats. The seasonal variation in the abundance of arthropods and fruits was evaluated in both habitats and seed movement between both habitats was assessed from fruits marked with fluorescence. Abundance of food resources for birds (arthropods and fruits) declined throughout the season in a similar way for both habitats, and there were strong similarities in the diet and trophic ecology of songbirds in the riparian gallery and adjacent habitat. In both habitats, birds preyed heavily on Hymenoptera and Coleoptera but birds more abundant in the Montado fed more on Araneae and Hymenoptera. Seeds were moved significantly more frequently from the riparian gallery into the adjacent Montado than vice‐versa. Our results suggest that birds from the adjacent habitat move frequently to the riparian gallery to forage and disperse seeds into the adjacent habitat as they depart. This study shows that birds play an important role in promoting connectivity between riparian galleries and adjacent habitats.

中文翻译:

鸣禽促进河岸画廊和邻近栖息地之间的连通性

河岸画廊是世界上最脆弱的栖息地之一,并以其对最专业的河岸鸟类的重要性而闻名。在这项研究中,我们分析了葡萄牙南部河岸画廊和邻近的Montado矩阵中的鸣鸟组成,鸣鸟饮食,营养生态和种子传播,以探讨鸟类在促进河岸画廊与相邻栖息地之间的连通性方面的重要性。我们使用粪便样本比较饮食,并使用血液样本比较这两个栖息地鸟类的氮稳定同位素。在两个生境中评估了节肢动物和水果丰度的季节性变化,并从带有荧光标记的水果中评估了两个生境之间的种子运动。在整个季节中,两个生境的鸟类(节肢动物和水果)的食物资源都以类似的方式下降,并且在河岸廊和邻近生境中,鸣禽的饮食和营养生态学具有很强的相似性。在这两个栖息地中,鸟类都以膜翅目和鞘翅目为主要捕食对象,而在蒙多多地区的鸟类则以Araneae和膜翅目为食。种子从河岸廊移到相邻的蒙多多的频率要高得多,反之亦然。我们的结果表明,来自邻近栖息地的鸟类经常移至河岸廊中觅食并将种子散布到邻近栖息地中。这项研究表明,鸟类在促进河岸画廊与相邻栖息地之间的连通性方面发挥着重要作用。在河岸廊和附近栖息地,鸣禽的饮食和营养生态学之间有很强的相似性。在这两个栖息地中,鸟类都以膜翅目和鞘翅目为主要捕食对象,而在蒙大杜州更丰富的鸟类以Araneae和膜翅目为食。从相反的方向看,种子从河岸廊移到相邻的蒙多多的频率要高得多。我们的结果表明,来自邻近栖息地的鸟类经常移至河岸廊中觅食并将种子散布到邻近栖息地中。这项研究表明,鸟类在促进河岸画廊与相邻栖息地之间的连通性方面发挥着重要作用。在河岸廊和附近栖息地,鸣禽的饮食和营养生态学之间有很强的相似性。在这两个栖息地中,鸟类都以膜翅目和鞘翅目为主要捕食对象,而在蒙大杜州更丰富的鸟类以Araneae和膜翅目为食。从相反的方向看,种子从河岸廊移到相邻的蒙多多的频率要高得多。我们的结果表明,来自邻近栖息地的鸟类经常移至河岸廊中觅食并将种子散布到邻近栖息地中。这项研究表明,鸟类在促进河岸画廊与相邻栖息地之间的连通性方面发挥着重要作用。鸟类主要以膜翅目和鞘翅目为食,而蒙大多州的鸟类则以Araneae和膜翅目为食。种子从河岸廊移到相邻的蒙多多的频率要高得多,反之亦然。我们的结果表明,来自邻近栖息地的鸟类经常移至河岸廊中觅食并将种子散布到邻近栖息地中。这项研究表明,鸟类在促进河岸画廊与相邻栖息地之间的连通性方面发挥着重要作用。鸟类主要以膜翅目和鞘翅目为食,而蒙大拿州的鸟类则以Araneae和膜翅目为食。种子从河岸廊移到相邻的蒙多多的频率要高得多,反之亦然。我们的结果表明,来自邻近栖息地的鸟类经常移至河岸廊中觅食并将种子散布到邻近栖息地中。这项研究表明,鸟类在促进河岸画廊与相邻栖息地之间的连通性方面发挥着重要作用。我们的结果表明,来自邻近栖息地的鸟类经常移至河岸廊中觅食并将种子散布到邻近栖息地中。这项研究表明,鸟类在促进河岸画廊与相邻栖息地之间的连通性方面发挥着重要作用。我们的结果表明,来自邻近栖息地的鸟类经常移至河岸廊中觅食并将种子散布到邻近栖息地中。这项研究表明,鸟类在促进河岸画廊与相邻栖息地之间的连通性方面发挥着重要作用。
更新日期:2020-10-09
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