Results 121 to 130 of about 87,301 (310)

Duck Tales: Spatio‐temporal dynamics of habitat use and prey relationships of a diving duck and its implication for conservation management

Conservation Science and Practice, EarlyView.
Shows the spatiotemporal predictability of wintering eiders based on monitoring data from 1993–2023 with intertidal and subtidal Marine Protected Areas (yellow and green, respectively), and a depiction of the current mismatch between eider hotspots and protection measures. Abstract Migratory animals often follow predictable spatiotemporal distributions
Kasper J. Meijer, Oscar Franken, Allert Imre Bijleveld, Mennobart van Eerden, Tjisse van der Heide, Laura L. Govers, Han Olff   +6 more
wiley   +1 more source

Geometric and Radiometric Correction of Multibeam Backscatter Derived from Reson 8101 Systems [PDF]

, 2002
A common by-product of multibeam surveys is a measure of the backscattered acoustic intensity from the seafloor. These data are of immense interest to geologists and geoscientists since maps of the acoustic backscatter strength can be used to infer ...
Beaudoin, Jonathan, Clarke, J.E. Hughes, Gardner, James V., Van den Ameele, Edward J   +3 more
core   +1 more source

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

Fisheries 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, Eduardo R. Secchi, Joanna Turner, Luis Gustavo Cardoso   +3 more
wiley   +1 more source

Ensemble Machine Learning Approaches for Bathymetry Estimation in Multi-Spectral Images

Geomatics
Traditional bathymetry measures require a large number of human hours, and many bathymetry records are obsolete or missing. Automated measures of bathymetry would reduce costs and increase accessibility for research and applications.
Kazi Aminul Islam, Omar Abul-Hassan, Hongfang Zhang, Victoria Hill, Blake Schaeffer, Richard Zimmerman, Jiang Li   +6 more
doaj   +1 more source

Environmental Drivers of Jumbo Squid During Fishery Collapse in the Gulf of California (2019–2024)

Fisheries Oceanography, EarlyView.
ABSTRACT The jumbo squid (Dosidicus gigas) is a cephalopod endemic to the eastern Pacific with significant ecological and economic importance. Its exploitation in the Gulf of California (GC) peaked in the 1990s, with catches exceeding 100,000 tons, but collapsed in 2009 and virtually disappeared by 2015, largely due to environmental changes and ...
Mario Vásquez‐Ortiz, Juan Roberto F. Vallarta‐Zárate, Jesús E. Osuna‐Soto, Emma Verónica Pérez‐Flores, Leslie Altamirano‐López, Ramón Isaac Rojas‐González   +5 more
wiley   +1 more source

Using the Diet Composition of Adult Chinook Salmon to Understand the Regional Structure of Salish Sea Forage Communities

Fisheries Oceanography, EarlyView.
ABSTRACT Small pelagic fish and other forage species are patchily distributed over space and time, resulting in variable foraging conditions experienced by their predators. The high‐resolution data necessary to understand the spatiotemporal structure of forage communities are challenging to collect with expensive fishery‐independent surveys, meaning ...
Wesley L. Greentree, William D. P. Duguid, Micah J. Quindazzi, Bridget Maher, Francis Juanes   +4 more
wiley   +1 more source

Preliminary Studies Leading Toward the Development of a LIDAR Bathymetry Mapping Instrument [PDF]

, 1993
The National Aeronautics and Space Administration (NASA) at Goddard Space Flight Center (GSFC) has developed a laser ranging device (LIDAR) which provides accurate and timely data of earth features.
Hill, John M., Krabill, William, Krenek, Brendan D., Kunz, Terry D., Stetina, Fran   +4 more
core   +1 more source

The Staircase Chart: Visualising Vertical and Cross‐Shelf Movements and Dispersal of Early‐Life Fish, Applied to Japanese Jack Mackerel

Fisheries Oceanography, EarlyView.
ABSTRACT Dispersal during early life stages is a critical process shaping marine fish connectivity and population dynamics, yet direct field observations at the individual level remain elusive. This has limited our understanding of the factors controlling dispersal, including the impact of active swimming by larvae and juveniles. Here, we present a new
Tatsuya Sakamoto, Daichi Muto, Motomitsu Takahashi, Chiyuki Sassa, Toyoho Ishimura   +4 more
wiley   +1 more source

GRDL: A New Global Reservoir Area‐Storage‐Depth Data Set Derived Through Deep Learning‐Based Bathymetry Reconstruction

Water Resources Research
Reservoirs play a critical role in the global water cycle by regulating the flow of water from the environment into human systems. Accurate estimation of the area‐storage‐depth relationships for global reservoirs is essential for effective hydrological ...
Zhen Hao, Fang Chen, Xiaofeng Jia, Xiaobin Cai, Chao Yang, Yun Du, Feng Ling   +6 more
doaj   +1 more source

RV Sonne Cruise 200, 11 Jan-11 Mar 2009. Jakarta - Jakarta [PDF]

, 2008
All plate boundaries are divided into segments - pieces of fault that are distinct from oneanother, either separated by gaps or with different orientations.
Dayuf Jusuf, M., McNeill, L.C.
core   +1 more source