Amy MacLeod

Lessons learned from surveying Galápagos marine iguanas using drones

Andrea Varela-Jaramillo, Christian Winkelmann, Gustavo Pazmiño-Otamendi, Jenifer Suárez-Moncada et autres

BACKGROUND: Monitoring wildlife in remote areas is a key challenge in conservation, with traditional methods proving increasingly inadequate in the face of accelerating biodiversity loss. Uncrewed Aerial Vehicles (UAVs) or drones help bridge data gaps, but methods require careful development and validation …

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Citizen scientists reliably count endangered Galápagos marine iguanas from drone images

Andrea Varela-Jaramillo, Christian Winkelmann, Andrés Mármol-Guijarro, Juan M. Guayasamin et autres

Population surveys are essential for conservation, but are often resource-intensive. Modern technologies, like drones, facilitate data collection but increase the analysis burden. Citizen Science (CS) offers a solution by engaging non-specialists in data analysis. We evaluated CS for monitoring marine iguanas, focusing …

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Iguanas from above: Citizen scientists provide reliable counts of endangered Galápagos marine iguanas from drone imagery

Andrea Varela-Jaramillo, Christian Winkelmann, Gonzalo Rivas‐Torres, Juan M. Guayasamin et autres

Abstract Population surveys are vital for wildlife management, yet traditional methods often demand excessive time and resources, leading to data gaps for many species. Modern technologies such as drones can facilitate field surveys but may also increase data analysis challenges. Citizen Science …

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A pilot study to estimate the population size of endangered Galápagos marine iguanas using drones

Andrea Varela-Jaramillo, Gonzalo Rivas‐Torres, Juan M. Guayasamin, Sebastian Steinfartz et autres

BACKGROUND: Large-scale species monitoring remains a significant conservation challenge. Given the ongoing biodiversity crisis, the need for reliable and efficient methods has never been greater. Drone-based techniques have much to offer in this regard: they allow access to otherwise unreachable areas and …

de, ec, us (code pays fourni par la source)

A pilot study to estimate the population size of endangered Galápagos marine iguanas using drones

Andrea Varela‑Jaramillo, Gonzalo Rivas‑Torres, Juan M. Guayasamin, Sebastian Steinfartz et autres

Background: Large-scale species monitoring remains a significant conservation challenge. Given the ongoing biodiversity crisis, the need for reliable and efficient methods has never been greater. Drone-based techniques have much to offer in this regard: they allow access to otherwise unreachable areas and …

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The spatial ecology of invasive feral cats Felis catus on San Cristóbal, Galápagos: first insights from GPS collars

Amy MacLeod, Sophia C. Cooke, Fritz Trillmich

Abstract The dangers posed by invasive species for endemic island wildlife are well recognised. Introduced domestic cats ( Felis catus ) represent a significant threat to several endemic species of the Galápagos archipelago—including hatchling marine iguanas ( Amblyrhynchus cristatus ) and potentially …

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Environmental temperatures shape thermal physiology as well as diversification and genome-wide substitution rates in lizards

Joan Garcia‐Porta, Iker Irisarri, Martin Kirchner, Ariel Rodríguez et autres

Climatic conditions changing over time and space shape the evolution of organisms at multiple levels, including temperate lizards in the family Lacertidae. Here we reconstruct a dated phylogenetic tree of 262 lacertid species based on a supermatrix relying on novel phylogenomic datasets …

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Determinants of Contests in Ugandan Female Ground-Nesting Bees (Tetraloniasp. n.)

David N. Fisher, Julian Melgar, Amy MacLeod, Clive Nuttman

Many animals engage in contests with conspecifics for access to resources. Understanding which resources individuals are contesting for, and what influences the outcome is central to our understanding of contest behaviour. We initially observed female bees of the genus Tetralonia (sp. n.) …

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Shedding light on the Imps of Darkness: an integrative taxonomic revision of the Galápagos marine iguanas (genus Amblyrhynchus)

Aurélien Miralles, Amy MacLeod, Ariel Rodríguez, Alejandro Ibáñez et autres

Marine iguanas are among the most highly emblematic taxa of the Galápagos archipelago but have paradoxically received little attention from taxonomists. Amblyrhynchus is currently considered as a monotypic genus with a total of seven subspecies, A. cristatus cristatus, A. c. nanus, A. …

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The conservation status of the Galápagos marine iguanas, Amblyrhynchus cristatus: a molecular perspective

Amy MacLeod, Sebastian Steinfartz

Traditionally, conservation management focuses efforts on taxonomic units. However, when the taxa used do not reflect biologically meaningful units, such methods should be reconsidered to avoid the loss of irreplaceable biodiversity. The Galápagos marine iguana ( Amblyrhynchus cristatus ) is listed as …

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A comparison of the physiological demands of rugby union match-play when determined by absolute (ABS) or individual (IND) velocity bands in Global Positioning System (GPS) analysis

Amy MacLeod

Since turning professional in 1995 there have been considerable advances in the research on the demands of rugby union, largely using Global Positioning System (GPS) analysis over the last 10 years. A systematic review on the use of GPS, particularly the setting …

The complete mitochondrial genomes of the Galápagos iguanas, Amblyrhynchus cristatus and Conolophus subcristatus

Amy MacLeod, Iker Irisarri, Miguel Vences, Sebastian Steinfartz

The Galápagos iguanas are among the oldest vertebrate lineages on the Galápagos archipelago, and the evolutionary history of this clade is of great interest to biologists. We describe here the complete mitochondrial genomes of the marine iguana, Amblyrhynchus cristatus (Genbank accession number: …

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