Conservation Letter: Effects of Global Climate Change on Raptors1

Martínez-Ruiz, Marisela; Dykstra, Cheryl R.; Booms, Travis L.; Henderson, Michael T.

doi:10.3356/jrr-22-75

Cited by 12 publications

(3 citation statements)

References 149 publications

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“…Global climate change is affecting myriad species of wildlife all over the world and in myriad ways (e.g., LeDee et al 2021). The continent of North America is no exception (Schneider and Root 2013) and neither are birds in general (Dunn and Møller 2019) or raptors in particular (Martínez-Ruiz et al 2023). The very fact that several papers have addressed the subject of the effect of global climate warming on American Kestrel populations in the last decade, starting with Heath et al (2012) and more recently by Powers et al (2021), and Callery et al (2022a, 2022b, underscores the importance of including this phenomenon in any discussion of causal factors in kestrel population declines.…”

mentioning

confidence: 99%

Evidence of Continuing Downward Trends in American Kestrel Populations and Recommendations for Research into Causal Factors

Bird

Smallwood

2023

Journal of Raptor Research

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We analyzed long-term datasets from nest box programs, Breeding Bird Surveys run by the US Geological Survey, Christmas Bird Counts run by the National Audubon Society, and counts from two key fall migration watch sites, Hawk Mountain Sanctuary and Cape May Hawkwatch. We found that populations of American Kestrels (Falco sparverius) in North America are generally still declining, albeit with some caveats. Some populations are actually increasing, while others are remaining stable. Overall, the magnitude of annual change appears to be decreasing slightly during recent years. To understand potential causes of the decline, we recommend the following courses of action in no particular order: (1) determine whether the increase in Cooper's Hawk (Accipiter cooperii) populations is restricting kestrel distributions by the mere presence of the larger raptor; (2) study the effects of habitat loss and/or degradation on the falcon's wintering range; (3) further investigate on a broader spatial scale whether within-season habitat alterations are creating ecological traps for breeding kestrels; (4) determine the importance of arthropods in the diet of kestrels, especially the long-term population trends and timing of emergence of grasshoppers in relation to kestrel breeding chronology; (5) discover whether rodenticides pose a serious risk to American Kestrels across North America; (6) learn more about possible effects, both direct and indirect, that the use of neonicotinoids may have on kestrels; and (7) continue ongoing studies of the effect of climate change on these birds.

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mentioning

confidence: 99%

Evidence of Continuing Downward Trends in American Kestrel Populations and Recommendations for Research into Causal Factors

Bird

Smallwood

2023

Journal of Raptor Research

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“…Global climate change has different degrees of negative impacts on bird diversity, including different bird species [14,15] in different regions [16][17][18]. The impact of urbanization on bird diversity exists in certain stages.…”

Section: Introductionmentioning

confidence: 99%

Maximum Entropy Analysis of Bird Diversity and Environmental Variables in Nanjing Megapolis, China

Lai,

Wang,

Huang

et al. 2024

Sustainability

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Against the background of global climate change and urbanization, the biodiversity of birds is facing unprecedented threats. In this paper, taking the Nanjing megapolis as an example, based on the distribution sites of 79 bird species and 17 environmental variables, the MaxEnt model was used to simulate the distribution of bird diversity, and the most important environmental variables were analyzed. The results show that (1) the MaxEnt model is suitable for simulation of the potential distribution of bird diversity in the Nanjing megapolis; (2) the areas with the highest bird diversity in the Nanjing megapolis were mainly distributed in the mountains and hills where the forests are located; (3) the five most important environmental variables affecting bird distribution were ranked as maximum temperature of the warmest month (MTWM) > Digital Elevation Model (DEM) > precipitation of the wettest month (PWM) > distance to the nearest forest (DF) > Fractional Vegetation Cover index (FVC), with MTWM, PWM, and DF being negatively correlated with bird diversity, whereas FVC and DEM exhibited positive correlations with bird diversity; and (4) the contribution rates of the three types of environmental variables were ranked as follows: habitat environmental variables > meteorological environmental variables > disturbance environmental variables. Sufficient bird habitats should be maintained in cities, and disturbances from human activities should be reduced to achieve the harmonious coexistence of humans and animals in the context of climate change and urbanization, thereby promoting sustainable development.

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“…Como depredadores tope con amplios requerimientos de hábitat, poblaciones poco abundantes y con una baja tasa reproductiva, son generalmente buenos indicadores de la integridad del hábitat, y por tanto, especies focales útiles para la conservación de hábitats vulnerables (Sergio, Newton, Marchesi y Pedrini, 2006). Por lo que, las aves rapaces son un grupo vulnerable a cambios ambientales causados por las actividades del ser humano o fenómenos naturales (Grossman y Hamlet, 1964;Martínez 1992;Bildstein, Schelski, Zalles y Ellis, 1998;Martínez-Ruíz, Escalante y Renton, 2016), por esta razón, varias especies se les reconoce como amenazadas (Thiollay, 1989).…”

Section: Introductionunclassified

Nidificación del halcón serlvático de collar (Micrastur semitorquatus) en un complejo arqueológico en el estado de Campeche, México

Monter-Pozos

Hernández-Hernández

2022

AZL

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El halcón selvático de collar (Micrastur semitorquatus) es el miembro más grande de su género. Se encuentra en una amplia variedad de hábitats desde el centro de México hasta el sur de Brasil. Registramos un nido de M. semitorquatus dentro de una de las estructuras que conforman el complejo arqueológico de Xkipché, en el estado de Campeche, México. Encontramos el nido a nivel del suelo, lo que representa el primer registro en México. En el interior del nido observamos restos de una iguana negra (Ctenosaura similis), plumas de la chara yucateca (Cyanocorax yucatanicus) y del momoto cejas azules (Eumomota superciliosa). Se ha mencionado que la anidación de esta especie en construcciones humanas es un comportamiento adaptativo en la búsqueda de lugares de anidación debido a la pérdida de hábitat, aunque también puede deberse a la flexibilidad de la especie. La información aquí presentada da pauta para futuros estudios en la zona, teniendo en cuenta que la fragmentación y la pérdida del hábitat causadas por la actividad humana condicionan la supervivencia para esta y otras especies.

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Conservation Letter: Effects of Global Climate Change on Raptors1

Cited by 12 publications

References 149 publications

Evidence of Continuing Downward Trends in American Kestrel Populations and Recommendations for Research into Causal Factors

Evidence of Continuing Downward Trends in American Kestrel Populations and Recommendations for Research into Causal Factors

Maximum Entropy Analysis of Bird Diversity and Environmental Variables in Nanjing Megapolis, China

Nidificación del halcón serlvático de collar (Micrastur semitorquatus) en un complejo arqueológico en el estado de Campeche, México

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