Results 121 to 130 of about 35,942 (282)

Semi‐automated seal detection on the Western Antarctic Peninsula: an unsupervised machine learning approach for detecting ice seals in aerial survey data

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
This study presents a semi‐automated, rule‐based image analysis pipeline to detect ice seals in aerial surveys of the Western Antarctic Peninsula during an unusually low sea ice year. By using simple hierarchical clustering instead of deep learning, the method substantially reduced human annotation effort while achieving 82% recall, identifying 758 ...
Claire McGinnity   +8 more
wiley   +1 more source

Recording Whale Watching Boat and Humpback Whale Collisions v1

open access: yes, 2023
The purpose of this research protocol is to record collisions caused by whale watching boat tours. We make use of remotely operated water vehicles to collect video footage of whale watching tours and analyze the footage simultaneously. This data will be taken over a five year period at multiple whale watching sites along the coast of Mo'orea, French ...
openaire   +1 more source

Total Economic Values of Increasing Gray Whale Populations: Results from a Contingent Valuation Survey of Visitors and Households [PDF]

open access: yes
The consistency of an individual's willingness to pay (WTP) responses for increases in the quantity of an environmental public good (whale populations) is tested along three lines.
Larson, Douglas M., Loomis, John B.
core   +1 more source

Financing Marine Conservation: A Menu of Options [PDF]

open access: yes, 2004
This guide describes over 30 mechanisms for financing the conservation of marine biodiversity, both within and outside of MPAs. Its main purpose is to familiarize conservation professionals i.e., the managers and staff of government conservation agencies,
Barry Spergel, Melissa Moye
core  

Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu   +5 more
wiley   +1 more source

Numerical Prediction of Deformation‐Induced Martensitic Transformation in Cold‐Sprayed Austenitic Stainless Steel

open access: yessteel research international, EarlyView.
Cold spray deposition of stainless steel (grade: SS304) is evaluated for marine applications, with emphasis on martensitic transformation during impact. Analytical modeling, simulations, and experiments reveal that helium‐assisted spraying of fine powders promotes cooling below the martensitic start temperature, enabling up to ≈40% austenite to ...
Cal Vin Wong   +4 more
wiley   +1 more source

Effects of tourism operations on the bahavioural patterns of dolphin populations off the Azores with particular emphasis on the common dolphin (Delphinus delphis) [PDF]

open access: yes, 2018
Tese de Doutoramento, Biologia, 07 de junho de 2018, Universidade dos Açores.Nos Açores encontram-se cerca de 30% das espécies de cetáceos atualmente conhecidas.
Cecchetti, Arianna
core  

Exploring the Impact of Polystyrene Microplastic Beads on Male Gonads of the Marine Mussel, Mytilus galloprovincialis

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Plastic, with its remarkable versatility and numerous applications, has greatly benefited humanity. However, its extreme resistance to natural degradation means it persists in the environment for long periods, causing global environmental problems.
Teresa Chianese   +13 more
wiley   +1 more source

The marine mammals of the Dutch Caribbean: a comparison between EEZ sectors, contrasts and concerns [PDF]

open access: yes
We here provide a synoptic overview and preliminary update of the marine mammals of the Dutch Caribbean EEZ based on 279 cetacean sighting and stranding records. The Dutch Caribbean EEZ is composed of two distinct sectors.
Debrot, A.O., Scheidat, M., Witte, R.H.
core   +1 more source

Noise levels and sources in the Stellwagen Bank National Marine Sanctuary and the St. Lawrence River Estuary [PDF]

open access: yes, 2005
Although ambient (background) noise in the ocean is a topic that has been widely studied since pre-World War II, the effects of noise on marine organisms has only been a focus of concern for the last 25 years.
Darre, Michael, Scheifele, Peter M.
core  

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