Results 41 to 50 of about 115,501 (201)

Vulnerability of marine megafauna to global at-sea anthropogenic threats. [PDF]

open access: yesConserv Biol
Abstract Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened ...
VanCompernolle M   +310 more
europepmc   +2 more sources

From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands

open access: yesFrontiers in Marine Science, 2021
Commerson’s dolphins (Cephalorhynchus commersonii) are separated into the subspecies C. c. commersonii, found along southern South America (SA) and the Falkland Islands/Islas Malvinas (FI/IM), and C. c.
Sebastián Kraft   +20 more
doaj   +1 more source

Red‐list status and extinction risk of the world's whales, dolphins, and porpoises

open access: yesConservation Biology, Volume 37, Issue 5, October 2023., 2023
Abstract To understand the scope and scale of the loss of biodiversity, tools are required that can be applied in a standardized manner to all species globally, spanning realms from land to the open ocean. We used data from the International Union for the Conservation of Nature Red List to provide a synthesis of the conservation status and extinction ...
Gill T. Braulik   +9 more
wiley   +1 more source

Population Dynamics Reveal a Core Community of the Common Bottlenose Dolphin (Tursiops truncatus) in Open Waters of the South-Western Gulf of Mexico

open access: yesFrontiers in Marine Science, 2021
The presence of transient and temporary individuals in capture-mark-recapture studies may violate the assumption on equal catchability, and thus yield biased estimates.
Jaime Bolaños-Jiménez   +10 more
doaj   +1 more source

Recovery of insular seabird populations years after rodent eradication

open access: yesConservation Biology, Volume 37, Issue 3, June 2023., 2023
Abstract Seabirds have been particularly affected by invasive non‐native species, which has led to the implementation of numerous eradication campaigns for the conservation of these keystone and highly vulnerable species. Although the benefits of eradication of invasive non‐native species for seabird conservation have been demonstrated, the recovery ...
Martin Philippe‐Lesaffre   +8 more
wiley   +1 more source

Distribution, movements and group size of the bottlenose dolphin (Tursiops truncatus) to the south of San Quintín Bay, Baja California, Mexico

open access: yesCiencias Marinas, 2004
 Twelve boat-based photoidentification surveys were carried out along the coast to the south of San Quintín Bay, in Baja California, Mexico, from July 1999 to June 2000; effort was 276.76 km and 31.7 h at sea.
E Morteo, G Heckel, RH Defran, Y Schramm
doaj   +1 more source

Genomics reveals the role of admixture in the evolution of structure among sperm whale populations within the Mediterranean Sea

open access: yesMolecular Ecology, Volume 32, Issue 11, Page 2715-2731, June 2023., 2023
Abstract In oceanic ecosystems, the nature of barriers to gene flow and the processes by which populations may become isolated are different from the terrestrial environment, and less well understood. In this study we investigate a highly mobile species (the sperm whale, Physeter macrocephalus) that is genetically differentiated between an open North ...
Biagio Violi   +19 more
wiley   +1 more source

Registros del delfín gris, Grampus griseus, en aguas costeras del sur de Argentina [PDF]

open access: yes, 2011
We review the records of published and unpublished sightings and strandings for Risso’s dolphin (Grampus griseus) in subantarctic waters of the Southwestern South Atlantic Ocean. Based on 59 sighting (n = 521 individuals) and 33 stranding records (n = 88
Bastida, Ricardo Oscar   +7 more
core   +1 more source

First national assessment of wildlife mortality in Ecuador: An effort from citizens and academia to collect roadkill data at country scale

open access: yesEcology and Evolution, Volume 13, Issue 3, March 2023., 2023
The first national assessment of wildlife mortality caused by road traffic in Ecuador. A comprehensive roadkill dataset with more than 5000 roadkill records in Ecuador that includes threatened and poorly known species. A joint effort of citizens and academia to collect roadkill data at a country scale.
Pablo Medrano‐Vizcaíno   +8 more
wiley   +1 more source

Modeling population effects of the Deepwater Horizon oil spill on a long‐lived species

open access: yesConservation Biology, Volume 36, Issue 4, August 2022., 2022
Abstract The 2010 Deepwater Horizon (DWH) oil spill exposed common bottlenose dolphins (Tursiops truncatus) in Barataria Bay, Louisiana to heavy oiling that caused increased mortality and chronic disease and impaired reproduction in surviving dolphins. We conducted photographic surveys and veterinary assessments in the decade following the spill.
Lori H. Schwacke   +20 more
wiley   +1 more source

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