User profiles for Alex Hearn

Alex Hearn

Universidad San Francisco de Quito
Verified email at usfq.edu.ec
Cited by 2897

[HTML][HTML] Hotspots within hotspots? hammerhead shark movements around wolf island, galapagos marine reserve

A Hearn, J Ketchum, AP Klimley, E Espinoza… - Marine biology, 2010 - Springer
Are pelagic species such as sharks and tuna distributed homogenously or heterogeneously
in the oceans? Large assemblages of these species have been observed at seamounts and …

Global spatial risk assessment of sharks under the footprint of fisheries

…, L Harman, FHV Hazin, M Heard, AR Hearn… - Nature, 2019 - nature.com
Effective ocean management and the conservation of highly migratory species depend on
resolving the overlap between animal movements and distributions, and fishing effort. …

Inter-island movements of scalloped hammerhead sharks (Sphyrna lewini) and seasonal connectivity in a marine protected area of the eastern tropical Pacific

JT Ketchum, A Hearn, AP Klimley, C Peñaherrera… - Marine biology, 2014 - Springer
Marine top predators are common at offshore bathymetric features such as islands, atolls,
and seamounts, where most pelagic reef fish reside, while certain sharks perform inter-island …

The rocky path to sustainable fisheries management and conservation in the Galápagos Marine Reserve

A Hearn - Ocean & Coastal Management, 2008 - Elsevier
Human activities in the Galápagos Marine Reserve are managed by a two-tier system
involving a multi-stakeholder local participatory forum and a national inter-ministerial decision-…

Adult female whale sharks make long-distance movements past Darwin Island (Galapagos, Ecuador) in the Eastern Tropical Pacific

AR Hearn, J Green, MH Román, D Acuña-Marrero… - Marine biology, 2016 - Springer
Most previous studies on whale shark movements have been on immature sharks. Here, we
present tracking data for large females that we tagged at the Galapagos Islands, where they …

Residency of the scalloped hammerhead shark (Sphyrna lewini) at Malpelo Island and evidence of migration to other islands in the Eastern Tropical Pacific

…, GA Soler, AP Klimley, JT Ketchum, A Hearn… - Environmental biology of …, 2011 - Springer
Sixty nine hammerhead sharks, Sphyrna lewini, were tagged at Malpelo Island (Colombia)
with ultrasonic transmitters during March 2006, 2007 and 2008, as part of a study to …

Young children's trust in their mother's claims: Longitudinal links with attachment security in infancy

…, B Arnott, L Elliott, B Liddle, A Hearn… - Child …, 2009 - Wiley Online Library
In a longitudinal study of attachment, children (N = 147) aged 50 and 61 months heard their
mother and a stranger make conflicting claims. In 2 tasks, the available perceptual cues …

Diving into the vertical dimension of elasmobranch movement ecology

…, A Hasan, LA Hawkes, F Hazin, M Heard, A Hearn… - Science …, 2022 - science.org
Knowledge of the three-dimensional movement patterns of elasmobranchs is vital to understand
their ecological roles and exposure to anthropogenic pressures. To date, comparative …

Global collision-risk hotspots of marine traffic and the world's largest fish, the whale shark

…, A Hasan, FHV Hazin, AR Hearn… - Proceedings of the …, 2022 - National Acad Sciences
Marine traffic is increasing globally yet collisions with endangered megafauna such as
whales, sea turtles, and planktivorous sharks go largely undetected or unreported. Collisions …

Undersea constellations: the global biology of an endangered marine megavertebrate further informed through citizen science

…, A Duncan, CA Rohner, CEM Prebble, A Hearn… - …, 2017 - academic.oup.com
The whale shark is an ideal flagship species for citizen science projects because of its
charismatic nature, its size, and the associated ecotourism ventures focusing on the species at …