Geographic range estimates and environmental requirements for the harpy eagle derived from spatial models of current and past distribution

Sutton, Luke J.; Anderson, David L.; Franco, Miguel; McClure, Christopher J. W.; Miranda, Everton B. P.; Vargas, F. Hernán; González, Jaume Freire; Puschendorf, Robert

doi:10.1002/ece3.7068

Cited by 27 publications

(44 citation statements)

References 103 publications

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“…In this study, we describe the gross, microscopic and immunohistochemical appearance of melanoma affecting the testicles and lungs of a harpy eagle ( Harpia harpyja ), a near-threatened species according to the International Union for Conservation of Nature (IUCN; Birdlife International, 2017 ). To our knowledge, this is the first case of this pathology in this neotropical raptor with a continental distribution in forests of Central and South America ( Miranda et al., 2019 ; Sutton et al., 2021 ), considered one of the most powerful birds of prey in the world, and one of the largest ( Ferguson-Lees and Christie, 2001 ), whose longevity is estimated to be 35 years ( Lerner et al., 2009 ).…”

Section: Introductionmentioning

confidence: 90%

Rhabdoid melanoma in a harpy eagle (Harpia harpyja)

Pinzón-Osorio

Ávila-Coy

Gómez

et al. 2021

Veterinary and Animal Science

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A 28-year-old male harpy eagle ( Harpia harpyja ) with a history of anorexia, hyporexia, lethargy, and progressive weight loss was found dead and submitted for post-mortem examination. Gross findings include dark brown discolouration of testes and lungs; the testes were bilaterally enlarged, glistening brown-grey to blackish in appearance, firm, smooth, and multilobulated. The lungs contained a mass with similar features to the testicles, irregularly shaped with multiple nodules. Histology of testis showed round, polygonal and pleomorphic cells, containing melanin pigments and a typical eosinophilic vacuole in their cytoplasm and with severe pleomorphism. An immunohistochemistry panel with Melan-A, vimentin, CK AE1/AE/3, MUM-1 and CD-68 were performed, yielding a positive reaction for Melan-A and vimentin. The morphology of the tumour cells, the presence of melanin pigment and the immunoreactivity for Melan-A and vimentin by the cells led to a diagnosis of rhabdoid melanoma. This is the first case of this pathology in the testis with lung metastasis in a harpy eagle.

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Section: Introductionmentioning

confidence: 90%

Rhabdoid melanoma in a harpy eagle (Harpia harpyja)

Pinzón-Osorio

Ávila-Coy

Gómez

et al. 2021

Veterinary and Animal Science

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“…Thus, this enables us to more proactively identify species of highest climate vulnerability and species in need of immediate conservation actions. We used this approach because it has been demonstrated to perform well in different taxa and geographical areas [15,[50][51][52].…”

Section: Modelling Vulnerability To Climate Changementioning

confidence: 99%

Effects of the Climate Change on Peripheral Populations of Hydrophytes: A Sensitivity Analysis for European Plant Species Based on Climate Preferences

2021

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Biogeographical theory suggests that widespread retractions of species’ rear edges are expected due to anthropogenic climate change, affecting in a particularly intense way those linked to fragile habitats, such as species’ rear edges closely dependent on specific water conditions. In this way, this paper studies the potential effects of anthropogenic climate change on distribution patterns of threatened rear edge populations of five European hydrophyte plants distributed in the Iberian Peninsula. We explored (i) whether these populations occur at the limit of the species’ climatic tolerance, (ii) we quantified their geographic patterns of vulnerability to climate change, and in addition, (iii) we identified in a spatially explicit way whether these threatened populations occur in vulnerable environments to climate change. To do this, we simulated the climatic niche of five hydrophyte species using an ecological modelling approach based on occurrences and a set of readily available climatic data. Our results show that the Iberian populations studied tended to occur in less suitable environments relative to each of the species’ optimal climates. This result suggests a plausible explanation for the current degree of stagnancy or regression experienced by these populations which showed high sensitivity and thus vulnerability to thermal extremes and high seasonality of wet and temperature. Climatic predictions for 2050 displayed that most of the examined populations will tend to occur in situations of environmental risk in the Iberian Peninsula. This result suggests that the actions aimed at the conservation of these populations should be prioritized in the geographic locations in which vulnerability is greatest.

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“…SDMs are particularly useful for predicting distributions for rare species inhabiting landscapes logistically and physically difficult to survey and thus estimate range size (Rhoden et al . 2017; Sutton & Puschendorf 2020; Sutton et al . 2021a,b).…”

Section: Introductionmentioning

confidence: 99%

“…For those species that exist in remote, hard to survey areas, SDMs are an effective method to estimate distribution using environmental layers combined with biodiversity inventory occurrence data from sources such as museums, atlases, and community science projects (Bradter et al . 2017; Sutton et al . 2021a,b).…”

Section: Introductionmentioning

confidence: 99%

Distribution and habitat use of the Madagascar Peregrine Falcon: first estimates for area of habitat and population size

Sutton

Roland²,

Thorstrom

et al. 2021

Preprint

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Accurately demarcating species distributions has long been at the core of ecology. Yet our understanding of the factors limiting species range limits is incomplete, especially for tropical species in the Global South. Human-driven threats to the survival of many taxa are increasing, particularly habitat loss and climate change. Identifying distributional range limits of at-risk and data-limited species using Species Distribution Models (SDMs) can thus inform spatial conservation planning to mitigate these threats. The Madagascar Peregrine Falcon (Falco peregrinus radama) is the resident sub-species of the Peregrine Falcon complex distributed across Madagascar, Mayotte, and the Comoros Islands. Currently, there are significant knowledge gaps regarding its distribution, habitat preferences and population size. Here, we use point process regression models and ordination to identify Madagascar Peregrine Falcon environmental range limits and propose a population size estimate based on inferred habitat. From our models, the core range of the Madagascar Peregrine Falcon extends across the central upland plateau of Madagascar with a patchier range across coastal and low-elevation areas. Range-wide habitat use indicated that the Madagascar Peregrine Falcon prefers areas of high elevation and aridity, coupled with high vegetation heterogeneity and > 95 % herbaceous landcover, but generally avoids areas of > 30 % cultivated land and > 10 % mosaic forest. Based on inferred high-class habitat, we estimate this habitat area could potentially support a population size ranging between 150-300 pairs. Following International Union for Conservation of Nature Red List guidelines, we recommend this sub-species be classed as Vulnerable, due to its small population size. Despite its potentially large range, the Madagascar Peregrine has specialized habitat requirements and would benefit from targeted conservation measures based on spatial models in order to maintain viable populations.

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Geographic range estimates and environmental requirements for the harpy eagle derived from spatial models of current and past distribution

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 27 publications

References 103 publications

Rhabdoid melanoma in a harpy eagle (Harpia harpyja)

Rhabdoid melanoma in a harpy eagle (Harpia harpyja)

Effects of the Climate Change on Peripheral Populations of Hydrophytes: A Sensitivity Analysis for European Plant Species Based on Climate Preferences

Distribution and habitat use of the Madagascar Peregrine Falcon: first estimates for area of habitat and population size

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