Amie E. Settlecowski, K. Davis, J. A. Cox, Stefan Woltmann, S. Taylor
{"title":"Natural history and community science records confirm rapid geographic shifts in the distribution of Bachman’s Sparrow (Peucaea aestivalis) since 1850","authors":"Amie E. Settlecowski, K. Davis, J. A. Cox, Stefan Woltmann, S. Taylor","doi":"10.5751/ace-02046-170124","DOIUrl":"https://doi.org/10.5751/ace-02046-170124","url":null,"abstract":". North American grassland birds colonized emerging habitat created by expanding agriculture in a pattern of eastward expansions from the mid-1800s to mid-1900s. These birds have been declining, since at least the mid-1900s, largely as result of anthropogenic landscape change. Only one bird that now breeds predominantly in southeastern pine savannas is thought to have experienced a concurrent range expansion into this region: Peucaea aestivalis (Bachman’s Sparrow). However, our understanding of the P. aestivalis expansion, and subsequent retraction to the southeastern United States, is largely based on a contemporaneous review of only a subset of historical records from beyond its modern, northern limit. We suggest an alternative explanation for these historical records is that P. aestivalis historically occurred more broadly than was recognized in contemporaneous literature. To evaluate these hypotheses, we reviewed field observations from literature, natural history collections, and eBird to show how P. aestivalis presence throughout eastern North America has shifted since the mid-1800s. To confirm that these findings were not the result of detection bias, we repeated our analysis on a common sparrow species ( Spizella pusilla ) with a largely overlapping breeding range, but no history of expansion and retraction. We confirm that P. aestivalis expanded its range, but add that prior to that expansion, its historical distribution was broader than commonly acknowledged today. As a result, we identify the northwestern historical limit of P. aestivalis , the Ouachita and Ozark highlands, as a potential source region for an eastward expansion that is consistent with those of other North American grassland birds of the era. We discuss the potential evolutionary and conservation implications of this range expansion on P. aestivalis given our more nuanced understanding of it. Anthropogenic landscape change initially provided additional habitat for P. aestivalis but has ultimately resulted in a reduction of the P. aestivalis distribution","PeriodicalId":49233,"journal":{"name":"Avian Conservation and Ecology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70961248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Age-specific effects on reproductive performance of grassland songbirds nesting in agricultural habitats","authors":"Olivia M. Scott, N. Perlut, A. Strong","doi":"10.5751/ace-02090-170201","DOIUrl":"https://doi.org/10.5751/ace-02090-170201","url":null,"abstract":". Clutch size and number of young fledged has been shown to increase with female age until approximately mid-life, when reproductive performance declines. We used a long-term dataset (2002–019) to investigate age-specific effects on reproductive parameters of known-age female Savannah Sparrows ( Passerculus sandwichensis , n = 60), and Bobolinks, ( Dolichonyx oryzivorus , n = 75) breeding in managed hayfields and pastures in Shelburne and Hinesburg, Vermont, USA. Female Savannah Sparrows (age 1 to 6 years) showed evidence of reproductive senescence with the number of young fledged peaking at 2 years of age and declining in older age classes. Additionally, daily nest survival was strongly and negatively affected by female age. The effect of age on Bobolink reproductive performance was weak. We found an increase in the number of eggs laid from 1 to 2 years of age, no age effect on number of nest attempts or number of young fledged, and a weak, negative effect of age on daily nest survival. We found no support for an effect of grassland management treatment on daily nest survival, which may have been a result of unequal distribution of nesting attempts across treatment types. However, species-specific responses to hay harvest may have affected the relationship between age and reproductive performance. Savannah Sparrows renest rapidly and frequently after nest loss due to haying, which may constrain long-term investment in reproduction. In this highly managed system, older females may allocate less energy toward reproduction than younger females, potentially shifting those resources de survie quotidien du nid. Nous n’avons trouvé aucun indice confirmant l’existence d’un effet du type d’aménagement des prairies sur le taux de survie quotidien des nids, ce qui pourrait être le résultat d’une répartition inégale des tentatives de nidification selon les types d’aménagement. Cependant, les réactions spécifiques des espèces à la récolte du foin peuvent avoir affecté la relation entre l’âge et la performance de reproduction. Les Bruants des prés re-nichent rapidement et fréquemment après la perte de leur nid consécutive à la récolte du foin, ce qui peut limiter leur investissement à long terme dans la reproduction. Dans ce système de milieux grandement aménagés, les femelles plus âgées allouent sans doute moins d’énergie à la reproduction que les femelles plus jeunes, déplaçant peut-être ces ressources vers des comportements qui soutiennent la survie annuelle. En revanche, les Goglus des prés n’investissent peut-être pas autant dans la reproduction, ne re-nichent généralement qu’une seule fois après l’échec du nid et ont une saison de reproduction tronquée en raison de leur longue migration automnale vers l’Amérique du Sud. Par conséquent, leur succès de reproduction ne varie peut-être pas aussi fortement avec l’âge. fast end of the life axis, estimating age-specific","PeriodicalId":49233,"journal":{"name":"Avian Conservation and Ecology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70961271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mortality of grassland birds increases with transmission lines","authors":"C. J. Martin, E. Bork, S. Nielsen","doi":"10.5751/ace-02096-170117","DOIUrl":"https://doi.org/10.5751/ace-02096-170117","url":null,"abstract":". Electrical transmission line development has been expanding globally by 5% per year, leading to increases in avian collisions with lines. Canadian estimates of transmission line collision mortalities range from 2.5 to 25.6 million birds per year, with the majority of mortalities attributed to collisions with overhead shield wires, and by susceptible birds that are young, large-bodied, with low maneuverability, or in open habitats. In this study, avian mortality was estimated for a ~4900 ha area in the mixed-grass prairie of southeastern Alberta following construction of two major transmission lines. We surveyed seven 500 m transects 7–10 times during both the breeding and migration seasons, where transects were categorized into road (n = 2), transmission line (n = 2), wetland (with transmission lines above; n = 1), or control (n = 2) areas. During the 2016 breeding season (5 May–24 June), we detected 23 mortalities under transmission lines, 7 mortalities beside roads, and no mortalities in controls. In the 2017 spring migration season (31 March–5 May), we detected 24 mortalities under transmission lines, 3 mortalities beside roads, and no mortalities in controls. Mortality rates were adjusted with biases estimated from detectability and scavenging trials. Scavenging rates were high (82% of carcasses were scavenged within 5 days) and detectability of deceased birds was positively related to body size. Overall, linear disturbances within the study area, including 37.7 km of highways and transmission lines, contributed to an estimated 75 deaths/km nous avons détecté 24 mortalités sous les lignes de transmission, 3 mortalités à côté de routes et aucune mortalité dans les zones témoin. Les taux de mortalité ont été ajustés au moyen de biais calculés à partir d'essais de détectabilité et de disparition des carcasses imputable aux charognards. Les taux de disparition étaient élevés (82 % des carcasses ont été éliminées dans les 5 jours) et la détectabilité des oiseaux morts était positivement liée à leur taille. Dans l'ensemble, les perturbations linéaires dans la zone d'étude, y compris 37,7 km d'autoroutes et de lignes de transmission, ont entraîné 75 mortalités/km de perturbation linéaire pendant une saison de migration et une saison de nidification (~50 mortalités/ km de lignes de transmission et ~25 mortalités/km de routes; ~1904 mortalités d'oiseaux au total). Nos résultats soulignent la nécessité de mettre en place des mesures d'atténuation pour qu'on puisse réduire la mortalité d'oiseaux, minimisant ainsi l'impact à long terme des perturbations linéaires, telles que les lignes de transmission et les routes, sur les communautés d'oiseaux.","PeriodicalId":49233,"journal":{"name":"Avian Conservation and Ecology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70961346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Morkūnas, S. Oppel, Modestas Bružas, Y. Rouxel, R. Morkūnė, Danielle L. Mitchell
{"title":"Seabird bycatch in a Baltic coastal gillnet fishery is orders of magnitude larger than official reports","authors":"J. Morkūnas, S. Oppel, Modestas Bružas, Y. Rouxel, R. Morkūnė, Danielle L. Mitchell","doi":"10.5751/ace-02153-170131","DOIUrl":"https://doi.org/10.5751/ace-02153-170131","url":null,"abstract":", ABSTRACT. Bycatch, or the incidental capture of non-target species in fisheries, has been identified as one of the major threats affecting seabird populations worldwide. In the Baltic Sea, a globally important area for wintering seabirds, bycatch in gillnets represents an important cause of human-induced mortality for seabird species whose populations have declined significantly in recent decades. Although countries are required by European law to report official bycatch data, a lack of data on bycatch in small-scale fisheries impedes an assessment of the contribution of bycatch to declines of seabird populations. This study presents data on the total seabird bycatch in the small-scale coastal fishery for an entire country, Lithuania, in the southeastern Baltic Sea, during the 2015–2020 winter period. An average of 19.3% of the total fishing effort in net-meter days (15.5% of fishing days) were observed each winter season, resulting in observations of 909 bycaught birds from 15 species. Two species composed two-thirds of the total bycatch, Long-tailed Duck ( Clangula hyemalis ; 42.1%) and Velvet Scoter ( Melanitta fusca ; 35.4%). Bycatch composition varied with depth, with the majority of bycatch occurring in nets set at depths ≤ 10 m. Adult males dominated the bycatch of benthivorous sea ducks, whereas adult females composed the majority of piscivorous birds caught. Low numbers of juveniles in the bycatch may indicate different wintering sites for young birds. We estimate that between 1500 and 3000 seabirds were bycaught annually in the Lithuanian small-scale coastal fishery in the 2015–2020 period. Because this number is orders of magnitude larger than the bycatch officially reported by the Lithuanian authorities (six birds), our study highlights deficiencies in the country’s current bycatch reporting. In contrast to official statistics based on inadequate data, the unintended capture of seabirds in gillnets remains high, despite financial investments to minimize the impact of fisheries on biodiversity.","PeriodicalId":49233,"journal":{"name":"Avian Conservation and Ecology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70961766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jay A. Vonbank, Joshua P. Vasquez, Jason P. Loghry, Kevin J. Kraai, Lei Cao, B. Ballard
{"title":"Wetland use by Greater White-fronted Geese and spatial overlap with waterfowl conservation priority areas in Mexico","authors":"Jay A. Vonbank, Joshua P. Vasquez, Jason P. Loghry, Kevin J. Kraai, Lei Cao, B. Ballard","doi":"10.5751/ace-02204-170220","DOIUrl":"https://doi.org/10.5751/ace-02204-170220","url":null,"abstract":". Greater White-fronted Geese ( Anser albifrons frontalis ) use both agricultural and wetland habitats throughout winter with changes in use exhibited temporally and in relation to environmental and landscape factors. Currently, an unknown proportion of Greater White-fronted Geese winter in Mexico, largely along the Gulf Coast and in the Central Highlands, where information regarding wintering ecology is largely unknown. Because conservation efforts for waterfowl typically focus on wetland habitats, understanding factors influencing wetland use is imperative to developing informed conservation strategies. During winters, 2016– 2018, we used remote sensing to measure characteristics of 91 wetlands used by GPS-tagged Greater White-fronted Geese, and modeled how wetland and landscape variables influenced wetland use and selection. Our top model of wetland use indicated that larger wetlands and wetlands that were closer to other used wetlands were related to increased use. There was an interaction between wetland type and distance to agriculture, indicating that Greater White-fronted Geese exhibited increased use of emergent herbaceous/grass and woody wetland types that were in closer proximity to agriculture. Our wetland-selection model indicated that woody and emergent wetlands that were larger in size were selected at greater rates than available wetlands on the landscape. Additionally, we conducted a spatial comparison of used wetlands in this study with wetlands previously identified as important for waterfowl conservation in Mexico in the literature. Of 91 wetlands used by geese, only 7.7% fell within wetland complexes identified as priority for waterfowl conservation or specific wetlands important to Greater White-fronted Geese by previous research, and all were within the Laguna Madre de Mexico and Rio Grande Delta regions in Tamaulipas. Wetlands in Mexico are being degraded at a rapid rate, and information such as this is important for future management and conservation-planning efforts throughout Mexico for wetland-dependent species such as the Greater White-fronted Goose. la conservation dans tout le Mexique pour les espèces qui dépendent de milieux humides comme l’Oie rieuse.","PeriodicalId":49233,"journal":{"name":"Avian Conservation and Ecology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70962217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Viktoria Grudinskaya, S. Samsonov, Elena Galkina, A. Grabovsky, T. Makarova, T. Vaytina, S. Fedotova, D. Shitikov
{"title":"Effects of spring weather on laying dates, clutch size, and nest survival of ground-nesting passerines in abandoned fields","authors":"Viktoria Grudinskaya, S. Samsonov, Elena Galkina, A. Grabovsky, T. Makarova, T. Vaytina, S. Fedotova, D. Shitikov","doi":"10.5751/ace-02215-170208","DOIUrl":"https://doi.org/10.5751/ace-02215-170208","url":null,"abstract":". Weather conditions have a significant impact on the life-history strategies of birds. The mechanisms by which weather variability drives demographic processes in boreal passerines have been investigated insufficiently. We examined the effects of spring weather on first egg-laying dates, clutch size, and nest survival of Booted Warbler ( Iduna caligata ) and Whinchat ( Saxicola rubetra ) breeding in abandoned agricultural fields in the north of European Russia in 2005–2019. We used general linear models to express first egg-laying dates and clutch size and program MARK to model nest survival as a function of weather variables. Our results demonstrated that variability of May precipitation and averaged daily temperature are important drivers of first egg dates, clutch size, and nest survival in both species. The first egg dates of Booted Warblers and Whinchats were determined primarily by the May temperature: the warmer the weather in May, the earlier the laying dates. Taking into account the effect of the first egg date, the clutch size of Booted Warblers strongly depended on the May averaged daily temperatures, whereas the clutch size of Whinchats was weakly affected by May precipitation. The spring weather had a strong impact on Booted Warbler and Whinchat nest survival, potentially by influencing the activity of nest predators. We suggest that years with a coincidence of low spring precipitation and temperature are the \"bad\" years for reproduction of boreal grassland birds. RÉSUMÉ. Les conditions météorologiques ont un impact majeur sur les stratégies de reproduction des oiseaux. Les mécanismes par lesquels la variabilité météorologique détermine les processus démographiques des passereaux des régions boréales ont été insuffisamment examinés. Nous avons examiné les effets du climat printanier sur les dates de première ponte, la taille des couvées et la survie des nids d’hypolaïs bottées ( Iduna caligata ) et de tariers des prés ( Saxicola rubetra ) qui se reproduisaient dans des champs agricoles abandonnés au nord de la Russie européenne de 2005 à 2009. Nous avons utilisé des modèles linéaires généraux pour exprimer les dates de première ponte et la taille des couvées et le programme MARK pour modéliser la survie des nids comme une fonction des variables météorologiques. Nos résultats indiquent que la variabilité des précipitations en mai et les températures moyennes quotidiennes sont des éléments déterminants pour les dates de première ponte, la taille des couvées et la survie des nids dans les deux espèces. Les dates de première ponte des hypolaïs bottées et des tariers des prés étaient principalement déterminées par la température en mai : plus le temps était chaud, plus la ponte était précoce. En tenant compte de l’effet de la date de première ponte, la taille des couvées d’hypolaïs bottées dépendait fortement des températures quotidiennes moyennes en mai, alors que la taille des couvées de tariers des prés n’était que peu affectée par le","PeriodicalId":49233,"journal":{"name":"Avian Conservation and Ecology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70962492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lindsay M. Dreiss, Paul Sánchez-Navarro, Bryan Bird
{"title":"Spatiotemporal patterns in Golden-cheeked Warbler breeding habitat quantity and suitability","authors":"Lindsay M. Dreiss, Paul Sánchez-Navarro, Bryan Bird","doi":"10.5751/ace-02245-170214","DOIUrl":"https://doi.org/10.5751/ace-02245-170214","url":null,"abstract":",","PeriodicalId":49233,"journal":{"name":"Avian Conservation and Ecology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70962899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Canada Warbler response to vegetation structure on regenerating seismic lines","authors":"Jocelyn M. Gregoire, R. Hedley, E. Bayne","doi":"10.5751/ace-02262-170226","DOIUrl":"https://doi.org/10.5751/ace-02262-170226","url":null,"abstract":". Seismic lines have an extensive footprint in Canada's western boreal forest that alter habitat conditions for many species. Seismic lines exist within a range of seral states due to changing practices and regulations related to operational needs. Forest regeneration is often hindered on seismic lines as they are frequently repurposed for recreational or alternative industrial uses. The Canada Warbler ( Cardellina canadensis ) is a Neotropical migrant songbird that relies on Canada's boreal region for breeding habitat. As a species at risk both federally (Threatened) and provincially within Alberta (Sensitive), their response to seismic lines has been a significant gap in our understanding of human impacts on the boreal breeding grounds. We used playback surveys along seismic lines within Canada Warbler habitat to identify individual territories. Arrays of autonomous recording units (ARU) were deployed to conduct acoustic source localization (ASL) and map the locations of territorial singing events. Canada Warblers avoided seismic lines with little to no woody vegetation but were more likely to be observed near seismic lines when shrub cover on the line increased. Canada Warblers used the seismic line and the edge environment but did not select for the line when compared to its availability. Use was more evenly distributed across the seismic line as shrub density on the line increased. However, even the most overgrown seismic lines were still perceived as a feature and influenced Canada Warbler space use and behavior. For Canada Warblers, ensuring that seismic lines in old-growth deciduous forests are allowed to recover by reducing reuse of lines should mitigate population level impacts, but more work is needed to assess how population dynamics are influenced by seismic lines and other Les lignes sismiques occupent une place très importante dans la forêt boréale de l’ouest du Canada, ce qui modifie les conditions d’habitat de nombreuses espèces. Les lignes sismiques sont présentes à différents états biotiques en raison des changements des pratiques et des réglementations liées aux besoins opérationnels. La régénération de la forêt est souvent entravée sur les lignes sismiques, car ces zones sont fréquemment réaffectées à des usages de loisirs ou industriels alternatifs. La paruline du Canada ( Cardellina canadensis ) est un passereau migrateur néo-tropical qui vient se reproduire dans la région boréale du Canada. en à la fois au niveau fédéral (menacée) et provincial dans l’Alberta (sensible), réponse aux lignes sismiques a à notre compréhension de l’impact sur les territoires de reproduction des régions boréales. relevés d’enregistrement de cris le long des lignes sismiques dans l’habitat de la paruline du Canada afin d’identifier les territoires individuels. Des séries d'unités autonomes (ARU) ont été déployées pour procéder à la localisation acoustique de la source (ASL) et cartographier les emplacements d’où provenaient les cris sur le terri","PeriodicalId":49233,"journal":{"name":"Avian Conservation and Ecology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70962964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Reinhard E. Matadamas, P. Enríquez, L. Guevara, Adolfo G. Navarro‐Sigüenza
{"title":"Stairway to extinction? Influence of anthropogenic climate change on distribution patterns of montane Strigiformes in Mesoamerica","authors":"Reinhard E. Matadamas, P. Enríquez, L. Guevara, Adolfo G. Navarro‐Sigüenza","doi":"10.5751/ace-02314-170237","DOIUrl":"https://doi.org/10.5751/ace-02314-170237","url":null,"abstract":". Although anthropogenic climate change (ACC) is a global phenomenon affecting all ecosystems, its effects are especially relevant in certain ecosystems, such as tropical montane forests. Responses of montane species to ACC in Mesoamerica remain unclear, limiting our ability to assess their vulnerability and the impacts on these ecosystems overall. To understand mechanisms underlying the distribution and vulnerability of montane faunas, we analyzed the influence of ACC on the geographic distribution of owls (order Strigiformes), which are a group of top avian predators distributed in montane forests. Using ecological niche models, we estimated the potential distributions of 35 species at present and under projected future climates (2050 and 2070) and analyzed changes in distributional patterns in terms of range size and altitudinal distribution for each species, as well as spatio-temporal patterns of species richness. Most of our projections (~86%) were consistent with the widely accepted hypothesis of species range shift to higher altitudes combined with reduction in distribution, as species try to track their climatic preferences. Interestingly, the mid-elevation species emerge as the most strongly affected by ACC, showing the highest rates of change. All climate scenarios produced a similar pattern of change in owl species richness, but they differed in the total number of species, a loss of 11 species and a maximum gain of seven species. Species richness remained relatively constant at mid elevations, whereas the greatest losses were in the highlands and the contiguous lowlands. Overall, our results suggest a severe impact of ACC in the coming decades for most owls of Mesoamerican montane forests.","PeriodicalId":49233,"journal":{"name":"Avian Conservation and Ecology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70963018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kyle D. Kittelberger, Megan Miller, Ç. Şekercioğlu
{"title":"Fall bird migration in western North America during a period of heightened wildfire activity","authors":"Kyle D. Kittelberger, Megan Miller, Ç. Şekercioğlu","doi":"10.5751/ace-2339-170243","DOIUrl":"https://doi.org/10.5751/ace-2339-170243","url":null,"abstract":"","PeriodicalId":49233,"journal":{"name":"Avian Conservation and Ecology","volume":"53 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70964470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}