Results 51 to 60 of about 1,248 (169)

Do Coexisting Cryptic Species of Predatory Peacock Bass (Cichliformes: Cichlidae) Partition Their Niche?

Ecology of Freshwater Fish, Volume 35, Issue 3, July 2026.
ABSTRACT The mechanisms facilitating coexistence of cryptic species in sympatry have long puzzled ecologists. Cryptic species have nearly identical morphology and, therefore, would be presumed to have high niche overlap and potential for interspecific competition and competitive exclusion when resources are limited. Lowland rivers in South America have
Benton L. Fry, Kirk O. Winemiller
wiley   +1 more source

Thermoelectric Properties of a Diketopyrrolopyrrole Polymer With Radical Pending Units

Advanced Electronic Materials, Volume 12, Issue 12, 22 June 2026.
The successful incorporation of TEMPO radicals as side‐chain groups onto the conjugated backbone of an n‐type polymer significantly enhanced the doping efficiency of N‐DMBI via a hydrogen transfer doping mechanism. ABSTRACT Organic n‐type polymers usually suffer from relatively low electrical conductivity which hampers their application as an active ...
Jiang Jing, Qian Liu, Ilknur Hatice Eryilmaz, Loup Chopplet, Melissa Berteau‐Rainville, Marc Daniel Paulik, Zuchong Yang, Nicolas Battaglini, Vincent Noël, Benoit Piro, Tim Leydecker, Steven E. Bottle, Aung Ko Ko Kyaw, Christopher R McNeill, Giorgio Mattana, Prashant Sonar, Emanuele Orgiu   +16 more
wiley   +1 more source

Sea Bottom Line Tracking in Side-Scan Sonar Images Using WTMM-Based Edge Detection

Journal of Marine Science and Engineering
The topographic features of the seafloor can be observed clearly via high-resolution side-scan sonar imagery. However, the faithful interpretation of a sonar image depends strongly on the accuracy with which the location of the sea bottom line can be ...
Jisheng Ding, Fengbiao Jiang, Fangqi Wang, Long Yang   +3 more
doaj   +1 more source

Autonomous Underwater Vehicle untuk Survei dan Pemantauan Laut

Jurnal Rekayasa Elektrika, 2017
AUV is an unmanned submersible platform to accomplish a mission. Side-scan sonar, Conductivity Temperature Depth (CTD), and underwater video camera are usually attached on AUV. These sensors were used for identifying seawater and seabed condition.
Henry M. Manik, Agung D. Syakti, Jales Veva Jaya, Dony Apdillah, Steven Solikin, Angga Dwinovantyo, Rina Fajaryanti, Bagas O. Siahaan, Muhammad Sanubari   +8 more
doaj   +1 more source

Whole System Ecohydrological Change Following Natural Flood Management and a Five‐Year Beaver Reintroduction Trial

Ecohydrology, Volume 19, Issue 4, June 2026.
ABSTRACT Once‐common beavers have been absent from the British landscape for centuries, but wild beaver populations have returned in recent years as part of reintroduction schemes, including releases into monitored enclosures. In North Yorkshire, such a release of Eurasian beavers took place in 2019.
Mark W. Smith, Alan Puttock, Megan J. Klaar, Huw Thomas, Lori Lawson Handley, Richard Brazier, Gareth Bradbury, Ambroise Baker, Ann Hanson, Nicholas Gibbons, Keith Gittens, Tom Spencer, Cath Bashforth   +12 more
wiley   +1 more source

Inversion of Side Scan Sonar Motion and Posture in Seabed Geomorphology

Polish Maritime Research, 2017
Side scan sonar measurement platform, affected by underwater environment and its own motion precision, inevitably has posture and motion disturbance, which greatly affects accuracy of geomorphic image formation.
Tao Weiliang, Liu Yan, Hu Wenbin
doaj   +1 more source

Autonomous Navigation in Large‐Scale Underground Environments Based on a Purely Topological Understanding of Tunnel Networks

Journal of Field Robotics, Volume 43, Issue 4, Page 2671-2692, June 2026.
ABSTRACT This work presents a non‐geometrical navigation approach based on a purely topological understanding of underground environments. By conceptualizing subterranean scenarios as a set of tunnels that intersect with each other, and taking a navigation approach based on topological instructions, we simplify the navigation problem to the sequential ...
Lorenzo Cano, Danilo Tardioli, Alejandro R. Mosteo   +2 more
wiley   +1 more source

Comparison of Conventional, Rake, and Sonar‐Based Biophysical Habitat Measurements in a Shallow Ontario River

River Research and Applications, Volume 42, Issue 5, Page 1011-1021, June 2026.
ABSTRACT Knowledge of habitat availability is critically important for the management and recovery of freshwater species. Quantifying habitat availability often requires fine‐scale sampling at point‐based locations across a large geographic extent, which can be laboursome.
Karl A. Lamothe, Jason Barnucz, D. Andrew R. Drake   +2 more
wiley   +1 more source

Development of a 2 MHz Sonar Sensor for Inspection of Bridge Substructures

Sensors, 2018
Hydraulic factors account for a large part of the causes of bridge collapse. Due to the nature of the underwater environment, quick and accurate inspection is required when damage occurs.
Chul Park, Youngseok Kim, Heungsu Lee, Sangsik Choi, Haewook Jung   +4 more
doaj   +1 more source

Incorporating environmental DNA metabarcoding for improved benthic biodiversity and habitat mapping

Remote Sensing in Ecology and Conservation, Volume 12, Issue 3, Page 444-461, June 2026.
Seafloor imagery is commonly used to collect information about the distribution of benthic organisms in order to generate habitat and biodiversity maps. Recent advances in genomics (e.g., environmental DNA; eDNA) show potential to complement video surveys for habitat mapping, but there have been few examples testing this.
Rylan J. Command, Shreya Nemani, Benjamin Misiuk, Mehrdad Hajibabaei, Nicole Fahner, Emily Porter, Greg Singer, Beverly McClenaghan, Katleen Robert   +8 more
wiley   +1 more source