Results 161 to 170 of about 15,455 (248)

Dumpsite Seabed Characterization of the San Pedro Basin, CA, From Autonomous Vehicle Observations

Journal of Field Robotics, EarlyView.
ABSTRACT A wide‐area seabed survey was conducted using autonomous underwater vehicles (AUVs) in a known dumpsite off the coast of Southern California that has been found to have widespread sediment contamination from the chemical dichlorodiphenyltrichloroethane (DDT).
Ryan A. McCarthy, Dylan Kriegman, Sophia T. Merrifield, Heidi Batchelor, Eric J. Terrill   +4 more
wiley   +1 more source

A millennium of cold-water coral habitat loss in the East Pacific during low ENSO variability in the mid- to late Holocene. [PDF]

Proc Natl Acad Sci U S A
Stewart JA, Robinson LF, Taylor ML, Fornari DJ, Robert K, Banks S, Chen T, Li T, Kershaw J, Hoy S, Liu Q, Gordon JD, de Carvalho Ferreira ML, Samperiz A, Shen Y, Sun YJ, Wang M.   +16 more
europepmc   +1 more source

Non‐Physical Barrier Design and Environmental Conditions Alter Routing and Survival of Juvenile Chinook Salmon (Oncorhynchus tshawytscha) in the Sacramento‐San Joaquin River Delta

River Research and Applications, EarlyView.
ABSTRACT Pacific salmon face substantial challenges when migrating through anthropogenically modified river systems, such as the Sacramento‐San Joaquin River Delta (the Delta). Non‐physical behavioral barriers, such as the bioacoustic fish fence (BAFF), are one potential solution for guiding fish away from hazards without obstructing water flow ...
Maggie Raboin, Summer M. Burdick, Russell W. Perry   +2 more
wiley   +1 more source

Strategic dam site selection and hazard mapping using remote sensing: insights from Wadi Araba, Egypt. [PDF]

Sci Rep
Mesallam MA, Salem ZE, Al Temamy AM, Abu-Alam TS, Fahil AS.   +4 more
europepmc   +1 more source

Seasonal Variation in Carbon Dynamics in the Lower Tocantins River: Influence of Discharge and Environmental Drivers

River Research and Applications, EarlyView.
ABSTRACT Tropical rivers play a key role in regional carbon budgets, yet greenhouse gas (GHG) dynamics in regulated systems remain poorly understood. This study investigates the seasonal variability of carbon dioxide (CO2) and methane (CH4) concentrations, isotopic composition (δ13C), and river‐atmosphere fluxes in the lower Tocantins River, a ...
Maria Gabriella da S. Araújo, Vania Neu, Victor M. Guedes, Marcelo Z. Moreira, Nicholas D. Ward, Alex V. Krusche   +5 more
wiley   +1 more source

35 metagenomic datasets from the northern and southern parts of the Yap trench sediments. [PDF]

Sci Data
Niu M, Fu L, Yan Q, He Z, Li D, Zhen Y, Wang M, Li C.   +7 more
europepmc   +1 more source

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

Remote 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, Connor C.G. Bamford, Nathan Fenney, Andrew Fleming, Jaume Forcada, Michael S. Tift, Luis A. Hückstädt, Daniel P. Costa, Peter T. Fretwell   +8 more
wiley   +1 more source

Thermal constraints on the distribution of Japanese eel (<i>Anguilla japonica</i>) at its northern limit: Links to land use and geology. [PDF]

PNAS Nexus
Muramatsu K, Kuroki M, Chang YK, Morita K, Kishida O.   +4 more
europepmc   +1 more source

Historical remote sensing highlights long‐term persistence of Emperor Penguin (Aptenodytes forsteri) colonies

Remote Sensing in Ecology and Conservation, EarlyView.
Remote sensing can reveal population dynamics of Antarctic penguin colonies. In this study, we analyze emperor penguin (Aptenodytes forsteri) guano stains in remote sensing imagery and discover colony presence predating known records for 18 colonies across Antarctica.
Martynas Bielinis, Michelle LaRue, Benjamin M. Kraemer, Catalina Munteanu   +3 more
wiley   +1 more source

Influence of Mineralogical Heterogeneity on Acid-Rock Interaction in Dolomitized Carbonates from the Parnaíba Basin, Northeastern Brazil: Implications for Reservoir Matrix Acid Stimulation. [PDF]

ACS Omega
Pereira JN, Souza NDS, Barreto IAR, de Medeiros RSP, de Luna JL, Aum PTP, Regis Dos SantosLucas C.   +6 more
europepmc   +1 more source