Results 31 to 40 of about 43,178 (255)

Measurements of total alkalinity and inorganic dissolved carbon in the Atlantic Ocean and adjacent Southern Ocean between 2008 and 2010 [PDF]

, 2013
Water column dissolved inorganic carbon and total alkalinity were measured during five hydrographic sections in the Atlantic Ocean and Drake Passage. The work was funded through the Strategic Funding Initiative of the UK's Oceans2025 programme, which ran
Bakker, D. C. E., De Boer, A. M., Jones, E. M., Lee, Gareth, Legge, O., Louwerse, A., Riley, J., Scally, S., Schuster, U., Watson, A. J.   +9 more
core   +4 more sources

Geomorphic Effects and Habitat Impacts of Large Wood at Restoration Sites in New England

River Research and Applications, EarlyView.
ABSTRACT Large wood (used interchangeably with the term “instream wood”), which refers to trees, logs and other wood within a channel, is beneficial to river ecosystems and is being used more frequently as a component of river restoration projects. We identified metrics to evaluate the effectiveness of large wood to promote ecological and geomorphic ...
Audrey J. Turcotte, Noah P. Snyder, Mathias J. Collins   +2 more
wiley   +1 more source

Sample Augmentation Method for Side-Scan Sonar Underwater Target Images Based on CBL-sinGAN

Journal of Marine Science and Engineering
The scarcity and difficulty in acquiring Side-scan sonar target images limit the application of deep learning algorithms in Side-scan sonar target detection.
Chengyang Peng, Shaohua Jin, Gang Bian, Yang Cui, Meina Wang   +4 more
doaj   +1 more source

Using Trail Cameras to Monitor Culvert Connectivity in Wadeable Streams

River Research and Applications, EarlyView.
ABSTRACT Anthropogenic barriers in aquatic habitats have led to fragmentation and decreased fish diversity worldwide. Road crossing barriers such as culverts are a significant source of fragmentation and can impede aquatic organism passage (AOP). Many large extent efforts to inventory road crossing barriers and prioritize restoration efforts do not ...
Lesley Twiner, R. Daniel Hanks, Brandon K. Peoples   +2 more
wiley   +1 more source

DBnet: A Lightweight Dual-Backbone Target Detection Model Based on Side-Scan Sonar Images

Journal of Marine Science and Engineering
Due to the large number of parameters and high computational complexity of current target detection models, it is challenging to perform fast and accurate target detection in side-scan sonar images under the existing technical conditions, especially in ...
Quanhong Ma, Shaohua Jin, Gang Bian, Yang Cui, Guoqing Liu   +4 more
doaj   +1 more source

Development and Improvement of Habitat Suitability Criteria for Instream Habitat Assessments Conducted in Support of Environmental Flows in Florida

River Research and Applications, EarlyView.
ABSTRACT Florida's regulatory framework requires the establishment of minimum flows to protect aquatic ecosystems and water resources from significant harm. One of the primary methods used to evaluate significant harm is assessment of instream habitat, which relies on Habitat Suitability Criteria (HSC) curves that relate flow regimes and habitat ...
Eric J. Nagid, Kym Rouse Holzwart
wiley   +1 more source

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

Journal 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, Shaohua Jin, Gang Bian, Chengyang Peng, Haixing Xia   +4 more
doaj   +1 more source

A simple method for retrieving significant wave height from Dopplerized X-band radar [PDF]

Ocean Science, 2017
Retrieving spectral wave parameters such as the peak wave direction and wave period from marine radar backscatter intensity is very well developed.
R. Carrasco, M. Streßer, J. Horstmann
doaj   +1 more source

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

Wildlife 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

Ecology of reintroduced Rocky Mountain bighorn sheep in Dinosaur National Monument La Ecología de Borrego Cimarron de las Montañas Rocosas Reintroducido en el Monumento Nacional de Dinosaurio

Wildlife Monographs, EarlyView.
We synthesized GPS telemetry, genetic, and pathogen data to evaluate metapopulation processes in a reintroduced Rocky Mountain bighorn sheep (Ovis canadensis canadensis) population in Dinosaur National Monument. We estimated subpopulation‐specific abundances and found 4 small subpopulations with high genetic diversity, partial connectivity, and ...
Sarah L. Carroll, Elizabeth P. Flesch, Salix R. Scoresby, Emily Spencer, Rachel S. Crowhurst, Clinton W. Epps, Nathan L. Galloway, William M. Janousek, Tabitha A. Graves   +8 more
wiley   +1 more source