Results 21 to 30 of about 10,206,077 (209)

A mark-recapture approach for estimating population size of the endangered ringed seal (Phoca hispida saimensis).

PLoS ONE, 2019
Reliable population estimates are fundamental to the conservation of endangered species. We evaluate here the use of photo-identification (photo-ID) and mark-recapture techniques for estimating the population size of the endangered Saimaa ringed seal ...
Meeri Koivuniemi, Mika Kurkilahti, Marja Niemi, Miina Auttila, Mervi Kunnasranta   +4 more
doaj   +1 more source

Searching for humpback whales in a historical whaling hotspot of the Coral Sea, South Pacific

Endangered Species Research, 2020
Humpback whales Megaptera novaeangliae were severely depleted by commercial whaling. Understanding key factors in their recovery is a crucial step for their conservation worldwide.
Garrigue, C, Derville, S, Bonneville, C, Baker, CS, Cheeseman, T, Millet, L, Paton, D, Steel, D   +7 more
doaj   +1 more source

Exploiting facial side similarities to improve AI-driven sea turtle photo-identification systems

Ecological Informatics
Animal photo-identification (photo-ID), the process of identifying individual animals from images, has proven to be a valuable tool for various studies on sea turtles, increasing the knowledge of their ecology and informing conservation efforts. Photo-ID
Lukáš Adam, Kostas Papafitsoros, Claire Jean, ALan F. Rees, Vojtěch Čermák   +4 more
doaj   +1 more source

NOTE: National Benefits of Ethiopia’s Digital ID Project and Its Implementation (Amharic)

Mizan Law Review, 2023
Identification system is divided into Foundation ID and Functional ID. There is the need for foundational ID in Ethiopia that fulfills international standards even though Kebele ID serves as a de-facto foundational ID.
Belayhun Yirga
doaj   +1 more source

Long-Term Photo-Identification Reveals the Population Dynamics and Strong Site Fidelity of Adult Whale Sharks to the Coastal Waters of Donsol, Philippines

Frontiers in Marine Science, 2018
Donsol in the Philippines is the longest running community-based whale shark (Rhincodon typus) ecotourism site in Southeast Asia, with peak visitation in 2012 of over 27,000 tourists. In order to understand this aggregation and the importance of the area
Emer McCoy, Raul Burce, David David, Elson Q. Aca, Jennifer Hardy, Jessica Labaja, Sally J. Snow, Alessandro Ponzo, Gonzalo Araujo   +8 more
doaj   +1 more source

Improving sightings-derived residency estimation for whale shark aggregations: A novel metric applied to a global data set

Frontiers in Marine Science, 2022
The world’s largest extant fish, the whale shark Rhincodon typus, is one of the most-studied species of sharks globally. The discovery of predictable aggregation sites where these animals gather seasonally or are sighted year-round – most of which are ...
Gonzalo Araujo, Gonzalo Araujo, Gonzalo Araujo, Ariana Agustines, Steffen S. Bach, Jesse E. M. Cochran, Emilio de la Parra-Galván, Rafael de la Parra-Venegas, Stella Diamant, Stella Diamant, Alistair Dove, Steve Fox, Rachel T. Graham, Sofia M. Green, Jonathan R. Green, Royale S. Hardenstine, Alex Hearn, Alex Hearn, Mahardika R. Himawan, Rhys Hobbs, Jason Holmberg, Ibrahim Shameel, Mohammed Y. Jaidah, Mohammed Y. Jaidah, Jessica Labaja, Savi Leblond, Christine G. Legaspi, Rossana Maguiño, Kirsty Magson, Stacia D. Marcoux, Travis M. Marcoux, Sarah Anne Marley, Sarah Anne Marley, Meynard Matalobos, Alejandra Mendoza, Joni A. Miranda, Brad M. Norman, Brad M. Norman, Cameron T. Perry, Simon J. Pierce, Alessandro Ponzo, Clare E. M. Prebble, Dení Ramírez-Macías, Richard Rees, Katie E. Reeve-Arnold, Samantha D. Reynolds, Samantha D. Reynolds, David P. Robinson, David P. Robinson, Christoph A. Rohner, David Rowat, Sally Snow, Abraham Vázquez-Haikin, Alex M. Watts, Alex M. Watts   +54 more
doaj   +1 more source

Estimates of the size of the Baltic grey seal population based on photo-identification data

NAMMCO Scientific Publications, 2007
The size of the year 2000 summer population of grey seals in the Baltic Sea was estimated using identification of individual seals from photographs taken over a period of 6 years.
Lex Hiby, Torkel Lundberg, Olle Karlsson, John Watkins, Mart Jüssi, Ivar Jüssi, Björn Helander   +6 more
doaj   +1 more source

Mark-recapture validates the use of photo-identification for the widely distributed blue-spotted ribbontail ray, Taeniura lymma

Scientific Reports
The ability to identify individual animals can provide valuable insights into the behaviour, life history, survivorship, and demographics of wild populations. Photo-identification (photo-ID) uses unique natural markings to identify individuals and can be
Ashlie J. McIvor, Collin T. Williams, Walter A. Rich, Anna M. Knochel, Neil M. Burns, Michael L. Berumen   +5 more
doaj   +1 more source

Evaluating the performance of semiautomated photographic identification programs for leopard seals

Wildlife Society Bulletin
The photographic identification (photo‐ID) of individual animals can be time‐consuming and erroneous. Recent efforts to collect photographs of leopard seals (Hydrurga leptonyx) from across their range have necessitated the technological streamlining of ...
Alexander A. Grabham, Krista van derLinde, Ximena J. Nelson   +2 more
doaj   +1 more source

Baited-Associated Aggregation of Spinner Sharks in Hulhumale, Maldives: Preliminary Observations and Photo-Identification Tools

Oceans
The spinner shark is a widely distributed coastal species that faces significant anthropogenic pressures, yet information on its ecology in the western Indian Ocean remains poorly documented.
Francesca Romana Reinero, Marco Pireddu, Giacomo Ridella, Lorenzo Valenti, Antonio Pacifico, Francesca Ellero, Primo Micarelli   +6 more
doaj   +1 more source