Fernando Hiraldo

Dr. Fernando Hiraldo

orcid

Research Focus & Metrics

Academic Career Length

35Years (1992-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 April 1992 in Ornis Scandinavica
Verified
Journal Article
Closed access
JDJose Antonio Donazar
Jose Antonio Donazar
JNJuan Negro
Juan Negro
FHFernando Hiraldo
Fernando Hiraldo

14 August 2020 in Diversity
Verified
Journal Article
Open access
PDF file
Pedro Romero-VidalPedro Romero-Vidal
Pedro Romero-Vidal
FHFernando Hiraldo
Fernando Hiraldo
FRFederica Rosseto
Federica Rosseto
Guillermo BlancoGuillermo Blanco
Guillermo Blanco
Martina CarreteMartina Carrete
Martina Carrete
José TellaJosé Tella
José Tella
Illegal wildlife trade, which mostly focuses on high-demand species, constitutes a major threat to biodiversity. However, whether poaching is an opportunistic crime within high-demand taxa such as parrots (i.e., harvesting proportional to species availability in the wild), or is selectively focused on particular, more desirable species, is still under debate. Answering this question has important conservation implications because selective poaching can lead to the extinction of some species through overharvesting. However, the challenges of estimating species abundances in the wild have hampered studies on this subject. We conducted a large-scale survey in Colombia to simultaneously estimate the relative abundance of wild parrots through roadside surveys (recording 10,811 individuals from 25 species across 2221 km surveyed) and as household, illegally trapped pets in 282 sampled villages (1179 individuals from 21 species). We used for the first time a selectivity index to test selection on poaching. Results demonstrated that poaching is not opportunistic, but positively selects species based on their attractiveness, defined as a function of species size, coloration, and ability to talk, which is also reflected in their local prices. Our methodological approach, which shows how selection increases the conservation impacts of poaching for parrots, can be applied to other taxa also impacted by harvesting for trade or other purposes.

13 April 2021 in Plants
Verified
Journal Article
Open access
PDF file
DHDailos Hernández-Brito
Dailos Hernández-Brito
Pedro Romero-VidalPedro Romero-Vidal
Pedro Romero-Vidal
FHFernando Hiraldo
Fernando Hiraldo
Guillermo BlancoGuillermo Blanco
Guillermo Blanco
JDJosé A. Díaz-Luque
José A. Díaz-Luque
José TellaJosé Tella
José Tella
Plant–animal interactions are key to sustaining whole communities and ecosystem function. However, their complexity may limit our understanding of the underlying mechanisms and the species involved. The ecological effects of epizoochory remain little known compared to other seed dispersal mechanisms given the few vectors identified. In addition, epizoochory is mostly considered non-mutualistic since dispersers do not obtain nutritional rewards. Here, we show a widespread but unknown mutualistic interaction between parrots and plants through epizoochory. Combining our observations with photos from web-sources, we recorded nearly 2000 epizoochory events in 48 countries across five continents, involving 116 parrot species and nearly 100 plant species from 35 families, including both native and non-native species. The viscid pulp of fleshy fruits and anemochorous structures facilitate the adherence of tiny seeds (mean 3.7 × 2.56 mm) on the surface of parrots while feeding, allowing the dispersion of these seeds over long distances (mean = 118.5 m). This parrot–plant mutualism could be important in ecosystem functioning across a wide diversity of environments, also facilitating the spread of exotic plants. Future studies should include parrots for a better understanding of plant dispersal processes and for developing effective conservation actions against habitat loss and biological invasions.

24 January 2020 in Diversity
Verified
Journal Article
Open access
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José TellaJosé Tella
José Tella
FHFernando Hiraldo
Fernando Hiraldo
EPErica Pacífico
Erica Pacífico
JDJosé A. Díaz-Luque
José A. Díaz-Luque
FDFrancisco Dénes
Francisco Dénes
Guillermo BlancoGuillermo Blanco
Guillermo Blanco
The extinction of ecological functions is increasingly considered a major component of biodiversity loss, given its pervasive effects on ecosystems, and it may precede the disappearance of the species engaged. Dispersal of many large-fruited (>4 cm diameter) plants is thought to have been handicapped after the extinction of megafauna in the Late Pleistocene and the recent defaunation of large mammals. We recorded the seed dispersal behavior of two macaws (Anodorhynchus hyacinthinus and Anodorhynchus leari) in three Neotropical biomes, totaling >1700 dispersal events from 18 plant species, 98% corresponding to six large-fruited palm species. Dispersal rates varied among palm species (5%–100%). Fruits were moved to perches at varying distances (means: 17–450 m, maximum 1620 m). Macaws also moved nuts after regurgitation by livestock, in an unusual case of tertiary dispersal, to distant perches. A high proportion (11%–75%) of dispersed nuts was found undamaged under perches, and palm recruitment was confirmed under 6%–73% of the perches. Our results showed that these macaws were legitimate, long-distance dispersers, and challenge the prevailing view that dispersal of large-fruited plants was compromised after megafauna extinction. The large range contraction of these threatened macaws, however, meant that these mutualistic interactions are functionally extinct over large areas at a continental scale.

6 March 2020 in Diversity
Verified
Journal Article
Open access
PDF file
José TellaJosé Tella
José Tella
DHDailos Hernández-Brito
Dailos Hernández-Brito
Guillermo BlancoGuillermo Blanco
Guillermo Blanco
FHFernando Hiraldo
Fernando Hiraldo
Electrocution is one of the less known anthropogenic impacts likely affecting the bat population. We surveyed 925 km of overhead distribution power lines that supply energy to spreading urbanized areas in Sri Lanka, recording 300 electrocuted Indian flying foxes (Pteropus giganteus). Electrocutions were recorded up to 58 km from the nearest known colony, and all of them were in urbanized areas and very close ( X ¯ = 4.8 m) to the exotic fruiting trees cultivated in gardens. Predictable anthropogenic food subsidies, in the form of cultivated fruits and flowers, seem to attract flying foxes to urban habitats, which in turn become ecological traps given their high electrocution risk. However, electrocution rates greatly varied among the 352 power lines surveyed (0.00–24.6 indiv./km), being highest in power lines with four wires oriented vertically ( X ¯ = 0.92 indiv./km) and almost zero in power lines with wires oriented horizontally. Therefore, the latter design should be applied to projected new power lines and old vertically oriented lines in electrocution hotspots should be substituted. Given that flying foxes are key seed dispersers and pollinators, their foraging habitat selection change toward urban habitats together with high electrocution risk not only may contribute to their population decline but also put their ecosystem services at risk.

1 January 2010 in BMC Ecology and Evolution
Verified
Journal Article
Open access
PDF file
RARosa Agudo
Rosa Agudo
CRCiro Rico
Ciro Rico
Carles VilàCarles Vilà
Carles Vilà
FHFernando Hiraldo
Fernando Hiraldo
JDJosé Donázar
José Donázar
Anthropogenic habitat modifications have led to the extinction of many species and have favoured the expansion of others. Nonetheless, the possible role of humans as a diversifying force in vertebrate evolution has rarely been considered, especially for species with long generation times. We examine the influence that humans have had on the colonization and phenotypic and genetic differentiation of an insular population of a long-lived raptor species, the Egyptian vulture (Neophron percnopterus).