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Diversity in selection patterns of five grassland songbirds in dry-mixed grasslands of Alberta 艾伯塔省干混草地5种草地鸣禽选择模式的多样性
IF 1.4 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Pub Date : 2023-01-01 DOI: 10.5751/ace-02425-180116
Julie Landry-DeBoer, Paul F. Jones, Brad A. Downey, P. Rose, Katheryn Taylor, Mike S. Verhage, Amanda B. MacDonald, Adam Moltzahn
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引用次数: 0
Combining community science and MaxEnt modeling to estimate Wild Turkey ( Meleagris gallopavo ) winter abundance and distribution 结合社区科学和MaxEnt模型估算野生火鸡(Meleagris gallopavo)冬季丰度和分布
IF 1.4 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Pub Date : 2023-01-01 DOI: 10.5751/ace-02390-180108
Jennifer E. Baici, J. Bowman
. Understanding the distribution and abundance of species is a fundamental aspect of conservation biology. Species distribution models aim to predict distributions based on species observations and ecologically relevant information. To understand the contemporary distribution of Wild Turkeys ( Meleagris gallopavo ) in Ontario, we curated and collated Wild Turkey flock observations from eBird and iNaturalist submitted during winter 2018. We combined these with environmental predictors to build distribution models using MaxEnt and evaluated model fit using 10-fold cross validation. We also estimated total population size for this species under different modeling scenarios. The potential presence of unknown spatial bias in community science datasets is a complex problem often requiring context-specific statistical solutions. Data cleaning, sometimes referred to as thinning, filtering, or culling, is often proposed to manage this bias. As such, we tested the effect of data cleaning on model outputs and on subsequent analyses. We evaluated all models using area under the curve (AUC). We found building density to be the most important environmental variable followed by winter severity. We validated our habitat suitability estimates using fine-scale GPS data and found that data cleaning had no effect on habitat suitability estimates inside available Wild Turkey habitat or inside core-use areas, except at one site in 2012 (t = -2.2, P = 0.04, df = 14). Use of community collected data offers a cost-efficient and collaborative method to obtain data for species distribution modeling and management. We discuss implications for Wild Turkey management and present potential contemporary distribution maps for this species.
. 了解物种的分布和丰富程度是保护生物学的一个基本方面。物种分布模型的目的是基于物种观察和生态相关信息来预测物种分布。为了了解野生火鸡(Meleagris gallopavo)在安大略省的当代分布,我们整理和整理了eBird和iNaturalist在2018年冬季提交的野生火鸡群观察结果。我们将这些与环境预测因子结合使用MaxEnt构建分布模型,并使用10倍交叉验证评估模型拟合。我们还估算了不同模拟情景下该物种的总种群规模。社区科学数据集中潜在的未知空间偏差是一个复杂的问题,通常需要针对具体情况的统计解决方案。数据清理,有时被称为细化、过滤或剔除,经常被用来管理这种偏差。因此,我们测试了数据清理对模型输出和后续分析的影响。我们使用曲线下面积(AUC)评估所有模型。我们发现建筑密度是最重要的环境变量,其次是严冬。我们利用精细尺度GPS数据验证了我们的栖息地适宜性估计,发现数据清理对现有野生火鸡栖息地或核心利用区内的栖息地适宜性估计没有影响,除了2012年的一个站点(t = -2.2, P = 0.04, df = 14)。利用群落收集的数据为物种分布建模和管理提供了一种经济有效的协作方法。我们讨论了对野生火鸡管理的影响,并提出了该物种潜在的当代分布图。
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引用次数: 1
Evidence of historical pairing between two cryptic species of Short-tailed Albatross 两种短尾信天翁之间的历史配对证据
IF 1.4 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Pub Date : 2023-01-01 DOI: 10.5751/ace-02353-180103
M. Eda, H. Izumi, Satoshi Konno, Miwa Konno, Yuki Watanabe, F. Sato
,
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引用次数: 0
Habitat associations of Golden-winged Warblers and Blue-winged Warblers during the non-breeding season 非繁殖期金翅林莺和蓝翅林莺的生境关系
IF 1.4 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Pub Date : 2023-01-01 DOI: 10.5751/ace-02465-180204
David I. King, Michael E. Akresh, David Murillo, Ruth E. Bennett, R. Chandler
. The Golden-winged Warbler ( Vermivora chyrsoptera ) and Blue-winged Warbler ( Vermivora cyanoptera ) are both Neotropical migratory species of elevated conservation concern that overlap in distribution on their Central American wintering grounds, yet the extent to which they overlap in terms of habitat use is unknown, potentially hindering conservation efforts. We surveyed these two species along habitat and elevational gradients within a coffee-growing landscape during 2016 and 2017 in Yoro, Honduras. We used playback with a mobbing track known to enhance detections of female warblers, since examining sexual habitat segregation was another objective of our study. Habitat occupied by these two species differed, with male Golden-winged Warblers occurring in landscapes dominated by humid forest/coffee (forest with some dense shade coffee, which were indistinguishable with remote sensing at our sites) at higher elevations than male Blue-winged Warblers, which were positively associated with the amount of agriculture in the landscape. Six of seven female Golden-winged Warblers were encountered in shade coffee, however, this association was not significant, likely due to small sample size and low detectability. The association between male Golden-winged Warblers and humid forest/coffee and elevation, and contrasts in habitat use between male and female Golden-winged Warblers, are consistent with prior research in the region. Furthermore, the landscape associations of these non-breeding Vermivora species mirror their breeding landscape associations, with Golden-winged Warblers occupying more forested landscapes and Blue-winged Warblers occupying more agricultural landscapes. The use of shade coffee by female Golden-winged Warblers and Blue-winged Warblers suggests agroforestry could be a promising tool for conserving wintering populations of these species, although this result should be viewed with caution given that use of shade coffee is reported to elevate predation risk in other migratory species
。金翅林莺和蓝翅林莺都是值得高度关注的新热带迁徙物种,它们在中美洲越冬地的分布重叠,但它们在栖息地使用方面的重叠程度尚不清楚,这可能会阻碍保护工作。2016年和2017年,我们在洪都拉斯Yoro的咖啡种植景观中沿着栖息地和海拔梯度调查了这两个物种。我们使用了一种已知的带有蜂群轨迹的回放来增强对雌性莺的探测,因为检查性别栖息地隔离是我们研究的另一个目标。两种林莺的生境存在差异,雄性金翅林莺出现在海拔较高的以湿润森林/咖啡为主的景观中(森林中有一些浓密的荫咖啡,在我们的站点遥感无法区分),而雄性蓝翅林莺则出现在海拔较高的景观中,这与景观中的农业数量呈正相关。7只雌性金翅林莺中有6只在遮荫咖啡中遇到,然而,这种联系并不显著,可能是由于样本规模小,可探测性低。雄性金翅莺与潮湿的森林/咖啡和海拔之间的联系,以及雄性和雌性金翅莺在栖息地使用上的对比,与该地区先前的研究一致。此外,这些非繁殖期蚯蚓目物种的景观关联反映了它们的繁殖期景观关联,金翅林莺占据更多的森林景观,蓝翅林莺占据更多的农业景观。雌性金翅林莺和蓝翅林莺使用遮荫咖啡表明农林业可能是保护这些物种越冬种群的一种有前途的工具,尽管考虑到据报道使用遮荫咖啡会增加其他迁徙物种被捕食的风险,这一结果应该谨慎看待
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引用次数: 0
Conservation-related knowledge, interactions, and attitudes of local people toward Grey Crowned-Cranes ( Balearica regulorum ) in Tanzania 坦桑尼亚当地居民对灰丹顶鹤的保护相关知识、互动和态度
IF 1.4 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Pub Date : 2023-01-01 DOI: 10.5751/ace-02467-180203
Bridget B. Amulike, C. Griffin, T. Fuller
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引用次数: 0
Light-level geolocation reveals moderate levels of migratory connectivity for declining and stable populations of Black-throated Blue Warblers ( Setophaga caerulescens ) 低光照的地理位置揭示了黑喉蓝林莺(Setophaga caerulescens)种群数量下降和稳定的中等水平的迁徙连通性
4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Pub Date : 2023-01-01 DOI: 10.5751/ace-02526-180212
William Lewis, Robert Cooper, Michael Hallworth, Alicia Brunner, T. Sillett
Black-throated blue warbler (Setophaga caerulescens) populations have been declining at the southern edge of the breeding range in North Carolina over the past two decades. Determining the causes of population declines in migratory species requires knowledge of the threats faced throughout the entire annual cycle, necessitating accurate information about the migratory routes and non-breeding areas used by birds. We used light-level geolocators to identify the fall migratory routes and non-breeding distributions of adults breeding at the southern edge of the range in North Carolina (n = 5), where populations are declining, and at the core of the range in New Hampshire (n = 8), where populations are stable. The strength of migratory connectivity was moderate (mean = 0.42). New Hampshire birds used non-breeding areas broadly distributed across the Caribbean, whereas North Carolina birds used a restricted non-breeding area largely in the Dominican Republic. Suitable forest cover declined at a higher rate from 2000 to 2019 in the Dominican Republic than in other Caribbean countries (8.4% vs. 2–4% loss), exposing birds from the trailing edge to significantly higher suitable habitat loss on the non-breeding grounds compared with range-core birds. Birds from the two study populations also exhibited differing migratory routes, with North Carolina birds migrating south through Florida and many New Hampshire birds performing an overwater flight from the Carolinas to the Caribbean. Our results suggest the possibility that, at least for this species, forest loss on the island of Hispaniola could be exacerbating population declines at the southern edge of the breeding range in North Carolina.
在过去的二十年里,黑喉蓝莺(Setophaga caerulescens)的数量在北卡罗来纳州繁殖范围的南部边缘一直在下降。确定候鸟数量下降的原因需要了解整个年周期所面临的威胁,需要关于候鸟迁徙路线和非繁殖区的准确信息。我们使用轻型地理定位器确定了在种群数量下降的北卡罗莱纳州南部边缘(n = 5)和种群数量稳定的新罕布什尔州核心(n = 8)繁殖的成虫的秋季迁徙路线和非繁殖分布。迁移连通性强度中等(平均值= 0.42)。新罕布什尔州的鸟类使用广泛分布在加勒比海的非繁殖区,而北卡罗来纳州的鸟类则主要使用多米尼加共和国的限制非繁殖区。从2000年到2019年,多米尼加共和国的适宜森林覆盖率下降速度高于其他加勒比国家(8.4%比2-4%),与核心范围的鸟类相比,尾部边缘的鸟类在非繁殖地的适宜栖息地损失明显更高。来自两个研究种群的鸟类也表现出不同的迁徙路线,北卡罗莱纳州的鸟类向南迁徙,穿过佛罗里达州,许多新罕布什尔州的鸟类从卡罗来纳州到加勒比海进行水上飞行。我们的研究结果表明,至少对这个物种来说,伊斯帕尼奥拉岛上的森林损失可能会加剧北卡罗莱纳州繁殖范围南部边缘的人口下降。
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引用次数: 0
Optimizing survey timing for detecting a declining aerial insectivore, the Black Swift ( Cypseloides niger borealis ) 优化调查时间,以发现衰落的空中食虫动物黑雨燕(cyseloides niger borealis)
4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Pub Date : 2023-01-01 DOI: 10.5751/ace-02519-180210
Paul Levesque, Richard Feldman, Christine Rock, W. Gross
Much of the biology of Black Swifts (Cypseloides niger) is poorly known due to the species’ mostly aerial existence and cryptic nesting habitat. Important aspects of the biology of the northern subspecies of Black Swift (C. n. borealis) have been described in the past two decades, but the difficulty in locating and accessing Black Swift breeding sites constrains a range-wide understanding of the species’ biology and abundance, and ultimately, the cause(s) of its population decline. The most widely used method to determine Black Swift breeding site occupancy is to monitor suitable nesting habitat during the last hours of daylight (evening surveys) to detect the presence of adults attending nests (i.e., flying to or from a cliff face). Potentially, dawn surveys could result in more detections if adults reliably leave their nests or roost sites at first light, after overnight attendance. Because the effectiveness of occupancy surveys has not been quantified, we compared detection rates between evening surveys and surveys in the first hours of daylight (dawn surveys) at nine known breeding sites in southern British Columbia in 2018. Next, we measured how detections varied over the dawn period at eight active breeding sites surveyed between 2018–2020 and seven breeding sites surveyed in August 2020 in southern British Columbia and western Alberta. At low light levels, 5.38 times the number of birds/minute were detected, on average, during dawn surveys, compared with evening surveys, with dawn to evening detection ratios as high as 8.93 at some sites. During dawn surveys, detections peaked 8 to 9 min before sunrise and declined rapidly as light levels increased after sunrise. We suggest using dawn surveys to determine breeding site occupancy and prioritize areas for nest searches, monitoring, and habitat protection to ultimately aid in conserving Black Swifts.
黑雨燕(cyseloides niger)的生物学大部分是鲜为人知的,因为该物种主要是在空中生存和隐蔽的筑巢栖息地。在过去的二十年里,人们对黑雨燕北部亚种(C. n. borealis)生物学的重要方面进行了描述,但定位和进入黑雨燕繁殖地的困难限制了对该物种生物学和丰度的广泛了解,并最终限制了对其种群下降原因的了解。确定黑燕繁殖地点占据情况最广泛使用的方法是在白天的最后几个小时(夜间调查)监测合适的筑巢栖息地,以发现是否有成年黑燕筑巢(即飞向或飞离悬崖)。如果成虫能在第一个黎明离开它们的巢穴或栖息地,在过夜后,黎明调查可能会导致更多的发现。由于占用调查的有效性尚未量化,我们比较了2018年不列颠哥伦比亚省南部9个已知繁殖地夜间调查和黎明调查(黎明调查)的检出率。接下来,我们测量了2018-2020年期间调查的八个活跃繁殖地和2020年8月在不列颠哥伦比亚省南部和阿尔伯塔省西部调查的七个繁殖地在黎明期间的探测变化情况。在低光照条件下,黎明调查平均每分钟检测到5.38倍的鸟,而在一些地点,黎明与夜晚的检测比高达8.93倍。在黎明调查中,探测在日出前8至9分钟达到峰值,并在日出后随着光照水平的增加而迅速下降。我们建议使用黎明调查来确定繁殖地点的占用情况,并优先考虑筑巢搜索,监测和栖息地保护的区域,最终有助于保护黑雨燕。
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引用次数: 0
International importance of tidal flats in the Republic of Korea as shorebird stopover sites in the East Asian–Australasian flyway 韩国潮滩作为东亚-澳大拉西亚飞行路线上的滨鸟中途停留地的国际重要性
IF 1.4 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Pub Date : 2023-01-01 DOI: 10.5751/ace-02449-180123
Ju-Hyun Lee, Incheol Kim, Si-Wan Lee, Jong-Ju Son, Jae-Ung Jang, Ha-Cheol Sung
,
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引用次数: 0
Long-distance dispersal patterns in the Cerulean Warbler: a case study from Indiana 蓝莺的远距离传播模式:来自印第安纳州的案例研究
IF 1.4 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Pub Date : 2023-01-01 DOI: 10.5751/ace-02428-180119
Lara Jones, K. Islam
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引用次数: 0
Highly variable movements by Andean Flamingos ( Phoenicoparrus andinus ): implications for conservation and management 安第斯火烈鸟(Phoenicoparrus andinus)的高度可变运动:对保护和管理的影响
4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Pub Date : 2023-01-01 DOI: 10.5751/ace-02521-180213
Alex Jahn, Joaquín Cereghetti, Michael Hallworth, Ellen Ketterson, Brandt Ryder, Peter Marra, Enrique Derlindati
The Andean Flamingo (Phoenicoparrus andinus) is endemic to the central Andes Mountains, with the majority of the population distributed between Argentina, Bolivia, and Chile. It is the rarest of the six flamingo species on the planet and is one of the least studied flamingos. Little information exists about its annual cycle, including which wetlands individual Andean Flamingos use at different times of year, posing an obstacle to developing effective conservation planning for its populations. In 2020 and 2022, we attached GPS-enabled satellite transmitters to four Andean Flamingos in northwestern Argentina, tracking their movements throughout the year to provide an initial assessment of their movement patterns, including timing, rate, and distances of movements between wetlands. We found highly variable movement patterns between individual flamingos. After the breeding season, which they spend at high elevations, some flamingos moved northwards to overwinter in the central Andes of Bolivia, whereas others moved south to overwinter near sea level in the lowlands of central Argentina. All tracked flamingos moved rapidly between wetlands, some of which were used by multiple flamingos. One flamingo visited sites in Argentina, Bolivia, and Chile during one annual cycle, highlighting the need for international conservation cooperation. Given the growing threats to this species, including climate change and a recent, rapid increase in lithium mining, we call for further research on this and other flamingo species in the Andes.
安第斯火烈鸟(Phoenicoparrus andinus)是安第斯山脉中部的特有种,大部分种群分布在阿根廷、玻利维亚和智利之间。它是地球上六种火烈鸟中最稀有的,也是研究最少的火烈鸟之一。关于其年周期的信息很少,包括安第斯火烈鸟在一年中的不同时间使用哪些湿地,这对制定有效的种群保护计划构成了障碍。在2020年和2022年,我们在阿根廷西北部的四只安第斯火烈鸟身上安装了gps卫星发射器,跟踪它们全年的活动,初步评估它们的运动模式,包括时间、速度和湿地之间的运动距离。我们发现单个火烈鸟之间的运动模式变化很大。在高海拔地区度过的繁殖季节过后,一些火烈鸟向北迁移到玻利维亚的安第斯山脉中部越冬,而另一些则向南迁移到阿根廷中部靠近海平面的低地越冬。所有被追踪的火烈鸟都在湿地之间快速移动,其中一些湿地被多只火烈鸟使用。一只火烈鸟在一个年度周期内访问了阿根廷,玻利维亚和智利的遗址,突出了国际保护合作的必要性。考虑到这个物种面临的威胁越来越大,包括气候变化和最近锂开采的快速增长,我们呼吁对安第斯山脉的这种和其他火烈鸟物种进行进一步的研究。
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引用次数: 0
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Avian Conservation and Ecology
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