Results 31 to 40 of about 3,335 (199)

A Method for Full-Depth Sound Speed Profile Reconstruction Based on Average Sound Speed Extrapolation

open access: yesJournal of Marine Science and Engineering
The speed of sound in seawater plays a crucial role in determining the accuracy of multibeam bathymetric measurements. In deep-sea multibeam measurements, the challenge of inadequate longitudinal coverage of sound speed profiles arises from variations in
Wei Zhang   +4 more
doaj   +1 more source

A high‐altitude thermal infrared method for estimating moose abundance and demography in Rocky Mountain National Park, USA

open access: yesWildlife Biology, EarlyView.
Resource managers require accurate estimates of large herbivore abundance and demography to maintain ecological integrity. Common methods to count these species, including observations from low altitude helicopter flights, may conflict with other protected area management objectives and struggle to produce precise estimates for more cryptic species. To
Hanem G. Abouelezz, N. Thompson Hobbs
wiley   +1 more source

Key agroecosystems for the conservation of amphibians and reptiles in Europe

open access: yesConservation Biology, EarlyView.
Abstract Agricultural expansion and intensification are driving amphibian and reptile declines worldwide. However, sustainably managed agroecosystems can support a high diversity of herpetofauna, which play a key role in pest control, reducing crop damage.
Andrea Dalpasso   +4 more
wiley   +1 more source

Conservation priorities for Neotropical water striders (Hemiptera: Heteroptera: Gerridae) under climate change

open access: yesConservation Science and Practice, EarlyView.
Hydrologic changes driven by climate change are affecting aquatic biota in the Neotropical Region, with significant impacts on water striders. Species distribution models predict an increase in conservation importance for the northern Andes and coastal areas of eastern South America, while central South America shows a decline. The observed changes are
Leticia Nery   +2 more
wiley   +1 more source

Hydrography of the Nile [PDF]

open access: yesThe Geographical Journal, 1905
n ...
W., A. S., Garstin, William
openaire   +1 more source

Lack of Compliance in Gillnet Fisheries Regulations Increases Risk to a Vulnerable Species

open access: yesFisheries Management and Ecology, EarlyView.
ABSTRACT This article presents an analysis of regulatory compliance in a Brazilian gillnet fishery, based on Vessel Monitoring System (VMS) tracking data. Satellite transmissions records, interpreted as proxies for gillnet haulings events, were analyzed and classified using a neural network to assess the level of compliance of the gillnet fleet.
Rodrigo Claudino dos Santos   +3 more
wiley   +1 more source

Interannual Variations in Distribution and Density of Japanese Anchovy (Engraulis japonicus) Larvae in the Shelf‐Break Region of East China Sea During Spring (2001–2022)

open access: yesFisheries Oceanography, EarlyView.
ABSTRACT Japanese anchovy (Engraulis japonicus) is the most abundant fish in the East China Sea (ECS) and an important fishery resource throughout its life stages. Using samples collected along the ECS shelf‐break in April over a 22‐year period (2001–2022), we examined the horizontal distribution and interannual variability of larval density (mean ...
Chiyuki Sassa   +5 more
wiley   +1 more source

SIGAN: A Multi-Scale Generative Adversarial Network for Underwater Sonar Image Super-Resolution

open access: yesJournal of Marine Science and Engineering
Super-resolution (SR) is a technique that restores image details based on existing information, enhancing the resolution of images to prevent quality degradation.
Chengyang Peng   +3 more
doaj   +1 more source

Bathymetric Survey for Enhancing the Volumetric Capacity of Tagwai Dam in Nigeria via Leapfrogging Approach

open access: yesGeomatics, 2021
From a global perspective, dams are constructed to trap water flowing from a higher concentration to a lower concentration into a basin for several purposes to aid humanity.
Pius Onoja Ibrahim, Harald Sternberg
doaj   +1 more source

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