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Sustained and delayed noisy miner suppression at an avian hotspot
Austral Ecology ( IF 1.6 ) Pub Date : 2020-03-09 , DOI: 10.1111/aec.12878
Ross Crates 1 , Laura Rayner 1 , Matthew Webb 1 , Dejan Stojanovic 1 , Colin Wilkie 2 , Robert Heinsohn 1
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To mitigate the impact of noisy miners Manorina melanocephala on Australia’s woodland birds, there is a need to identify locations where noisy miner suppression can be affordable, sustainable and facilitate woodland bird recovery. In 2017, we suppressed noisy miners from the Goulburn River, NSW for at least three months. During this period, six pairs of critically endangered regent honeyeaters nested in the treatment area. In 2018, we continued monitoring the original noisy miner treatment area, which was expanded to include our 2017 control area, and established a new control area downstream. In 2019, the removal effort was again expanded to include the 2018 control area. In the 2017 treatment area, noisy miners remained suppressed up to 27 months post‐removal. Their numbers here were lower 1 year after the initial cull than in the week after it. In the 2018 and 2019 treatment areas, noisy miner abundance was significantly lower after respective culls than at all pre‐removal periods. In 2018, around 20 vulnerable painted honeyeaters occupied the 2018 treatment area. In 2019, two regent honeyeater pairs nested in and at least 40 painted honeyeaters occupied the treatment area. Songbird abundance increased within seasons and also up to a year following noisy miner removal, and plateaued thereafter. We show how, in strategic locations, a week of noisy miner suppression each spring can sequentially create ever‐larger landscapes where noisy miner impacts on threatened woodland birds are minimal.

中文翻译:

持续和延迟抑制禽类热点地区的矿工

减轻嘈杂矿工的影响Manorina melanocephala对于澳大利亚的林地鸟类,有必要确定可以负担得起的,可持续的并能促进林地鸟类恢复的抑制噪音矿工的地点。2017年,我们压制了来自新南威尔士州古尔本河的嘈杂矿工至少三个月。在此期间,在治疗区域内筑巢了六对濒临灭绝的摄政王蜜糖。在2018年,我们继续监测原始的嘈杂的矿工处理区,该处理区已扩展到包括我们的2017年控制区,并在下游建立了一个新的控制区。在2019年,拆除工作再次扩大到2018年的控制区。在2017年的治疗区内,嘈杂的矿工在撤离后长达27个月仍受到抑制。他们的数量比最初剔除1年后要低。在2018年和2019年的治疗领域中,各个剔除后的噪音矿工丰度明显低于所有撤除前的时期。在2018年,约有20个脆弱的涂有油漆的蜜糖吞噬者占领了2018年的治疗区域。在2019年,两个摄政王蜜蜡对嵌套在其中,至少40个彩绘蜜蜡对占领了治疗区域。在嘈杂的矿工撤离之后,鸣禽的丰度在不同季节内以及长达一年之内都增加了,此后达到了稳定。我们展示了在重要的地理位置,每个春季如何抑制一周的嘈杂矿工,从而可以顺序创建更大的景观,使嘈杂的矿工对受威胁的林地鸟类的影响降到最低。嵌套了两个摄政王蜜蜡对,至少40个涂有油漆的蜜糖蜜占据了治疗区域。在嘈杂的矿工撤离之后,鸣禽的丰度在不同季节内以及长达一年之内都增加了,此后达到了稳定。我们展示了在战略位置,每个春季如何抑制一周的嘈杂矿工,从而可以依次创建更大的景观,使嘈杂的矿工对受威胁的林地鸟类的影响降到最低。嵌套了两个摄政王蜜蜡对,至少40个涂有油漆的蜜糖蜜占据了治疗区域。在嘈杂的矿工撤离之后,鸣禽的丰度在不同季节内以及长达一年之内都增加了,此后达到了稳定。我们展示了在重要的地理位置,每个春季如何抑制一周的嘈杂矿工,从而可以顺序创建更大的景观,使嘈杂的矿工对受威胁的林地鸟类的影响降到最低。
更新日期:2020-03-09
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