Results 61 to 70 of about 1,208,900 (175)

Few Annotations, High Accuracy: Transfer Learning and Data Augmentation Improve Passive Acoustic Monitoring of the Vulnerable African Manatee

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Can deep learning reliably detect a threatened species in passive acoustic monitoring with few annotations? Across 52 sites and 600 recording days, we compared two deep learning recognizers with the traditional machine learning Kaleidoscope for detecting African manatee vocalizations.
Lucas Dubus   +7 more
wiley   +1 more source

Bubble blasts! An adaptation for buoyancy regulation in shallow foraging gray whales

open access: yesEcology and Evolution
Foraging efficiency is key to animal fitness. Consequently, animals evolved a variety of kinematic, morphological, physiological, and behavioral adaptations for efficient locomotion to reduce energy expenditure while moving to find, capture, and consume ...
Clara N. Bird   +6 more
doaj   +1 more source

Facing Truths About Population Management

open access: yesZoo Biology, EarlyView.
Populations of wildlife, and domestic animals have large sinks for surplus animals. By contrast, zoos don't. Humans in industrialized societies are socialized with companion animals, i.e. surplus (i.e., typically denied reproduction) originating from unseen breeding cores.
Marcus Clauss   +48 more
wiley   +1 more source

A Comprehensive Survey of Pelagic Megafauna: Their Distribution, Densities, and Taxonomic Richness in the Tropical Southwest Indian Ocean

open access: yesFrontiers in Marine Science, 2017
The distribution and density of pelagic megafauna (marine mammals, seabirds, elasmobranches, and sea turtles) are important indicators of marine biodiversity, reflecting the condition of the underlying ecosystems.
Sophie Laran   +6 more
doaj   +1 more source

Megafauna in Salt Marshes

open access: yesFrontiers in Marine Science, 2020
Megafauna shape ecosystems globally through trophic interactions, ecology of fear, and ecosystem engineering. Highly productive salt marshes at the interface of terrestrial and marine systems have the potential to support megafauna species, but a recent ...
Leo C. Gaskins   +2 more
doaj   +1 more source

Integrating large mammalian herbivores into Dynamic Global Vegetation Models: Status and next steps

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Zoogeochemistry, the study of how animals influence elemental cycling within ecosystems, bridges the fields of zoology, ecology and biogeochemistry. Yet, most terrestrial ecosystem models, especially Dynamic Global Vegetation Models (DGVMs), remain largely plant‐centric
Yue Cheng   +10 more
wiley   +1 more source

Satellite tracking of juvenile whale sharks in the Sulu and Bohol Seas, Philippines [PDF]

open access: yesPeerJ, 2018
The whale shark Rhincodon typus was uplisted to ‘Endangered’ in the 2016 IUCN Red List due to >50% population decline, largely caused by continued exploitation in the Indo-Pacific. Though the Philippines protected the whale shark in 1998, concerns remain
Gonzalo Araujo   +7 more
doaj   +2 more sources

Fishing Activity Affected Odontocete Cetacean Distribution in a Marine Protected Area in the East China Sea

open access: yesIntegrative Zoology, EarlyView.
Spatiotemporal distribution of odontocete cetaceans within China's Jiushan Archipelago National Nature Reserve was investigated. Fishing vessels significantly reduced both cetacean acoustic detections and feeding activity, whereas gillnets selectively suppressed cetacean feeding behavior without affecting overall cetacean detection rates.
Yifan Liu   +10 more
wiley   +1 more source

Size and body condition drive the energetic cost of a baleen whale foraging in shallow habitat [PDF]

open access: yesPeerJ
Energy expenditure strongly influences an animal’s foraging decisions and activity budgets. Diving animals especially need to be energetically efficient because they exercise while oxygen is limited.
Clara N. Bird   +10 more
doaj   +2 more sources

From fluke to fragment: A multifaceted method for molecular sex identification and mitochondrial haplotyping from environmental DNA samples

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Environmental DNA (eDNA) analyses have become a powerful tool for non‐invasive biodiversity monitoring, yet the applicability of population‐genetic approaches to environmental samples remains largely unexplored. Even when genetic traces originate from a single individual, low target DNA concentrations and amplification or sequencing artefacts ...
Lauren Kelly Rodriguez   +8 more
wiley   +1 more source

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