Geir Johnsen - Publications, H-index & Citations

Geir Johnsen

norwegian university of science and technology

51H指数

200论文数

7.9K被引数

收录论文 35

发表时间

Application of an integrated Species Distribution Model (iSDM) for deep-sea marine habitats: Knowledge gaps in the extended Norwegian continental shelf 集成物种分布模型(iSDM)在深海海洋栖息地中的应用：挪威海大陆架延伸区的知识空白

Ecological Informatics

IF7.3

2026-09-11

OAAI

Laura Paiba-Garcia; Sam Wenaas Perrin; Geir Johnsen; Anders Gravbrøt Finstad; Torkild Bakken

Hyperspectral Imaging of Seagrass and Macroalgae Using Uncrewed Aerial and Surface Vehicles for Coastal Habitat Mapping 利用无人航空和水面车辆对海草和大型藻类进行高光谱成像以用于海岸生境制图

Remote Sensing

IF4.1

2026-07-23

OAAI

Malin Bø Nevstad; Torkild Bakken; Håvard Snefjellå Løvås; Kasper Hancke; Tor Arne Johansen; Geir Johnsen

Assessing Arctic under sea-ice light regimes and ice algal bio-optical properties using ROV-based hyperspectral imaging 利用基于ROV的高光谱成像评估海冰下北极光照条件及冰藻生物光学特性

Polar Biology

IF1.6

2026-02-19

OAAI

Summers, Natalie; Bremnes, Jens Einar; Liu, Hongbo; Lovas, Havard Snefjella; Fragoso, Glaucia Moreira; Johnsen, Geir

The influence of environmental factors and phytoplankton blooms on cyphonautes larvae abundance and bryozoan colony development at a kelp farm in central Norway

Marine Environmental Research

IF3.2

2026-01-14

PREAI

G.M. Fragoso; Nalia Hama; Elisabeth Snijder; David Aldridge; Ana R. Borrero-Santiago; Ole Jacob Broch; Geir Johnsen; Yngvar Olsen; Maja Hatlebakk

Pixelwise immersion factor calibration for underwater hyperspectral imaging instruments

OPTICS EXPRESS

IF3.3

2024-05-14

OAAI

Liu, Hongbo; Summers, Natalie; Chen, Yi -chun; Lovas, HaVARD SNEFJELLa; Johnsen, Geir; Koestner, Daniel; Saetre, Camilla; Hamre, Borge

Use of an uncrewed surface vehicle and near infrared hyperspectral imaging for sampling and analysis of aquatic microplastics

MARINE POLLUTION BULLETIN

IF4.9

2024-04-01

OAAI

Faltynkova, Andrea; Desche, Catherine E.; Zolich, Artur; Wagner, Martin; Johansen, Tor Arne; Johnsen, Geir

Photophysiologically active green, red, and brown macroalgae living in the Arctic Polar Night

SCIENTIFIC REPORTS

IF3.9

2023-10-20

OAAI

Summers, Natalie; Fragoso, Glaucia M.; Johnsen, Geir

Monitoring Algal Blooms with Complementary Sensors on Multiple Spatial and Temporal Scales

OCEANOGRAPHY

IF2.8

2023-01-01

OAAI

Williamson, David R.; Fragoso, Glaucia M.; Majaneva, Sanna; Dallolio, Alberto; Halvorsen, Daniel O.; Hasler, Oliver; Oudijk, Adrienne E.; Langer, Dennis D.; Johansen, Tor Arne; Johnsen, Geir; Stahl, Annette; Ludvigsen, Martin; Garrett, Joseph L.

A Methodology for Consistent Georegistration in Underwater Hyperspectral Imaging

IEEE JOURNAL OF OCEANIC ENGINEERING

IF5.3

2022-04-01

PREAI

Lovas, Havard Snefjella; Mogstad, Aksel Alstad; Sorensen, Asgeir J.; Johnsen, Geir

Pelagic organisms avoid white, blue, and red artificial light from scientific instruments

SCIENTIFIC REPORTS

IF3.9

2021-07-22

OAAI

Geoffroy, Maxime; Langbehn, Tom; Priou, Pierre; Varpe, Oystein; Johnsen, Geir; Le Bris, Arnault; Fisher, Jonathan A. D.; Daase, Malin; McKee, David; Cohen, Jonathan; Berge, Jorgen

In situ recordings of large gelatinous spheres from NE Atlantic, and the first genetic confirmation of egg mass of Illex coindetii (Verany, 1839) (Cephalopoda, Mollusca)

SCIENTIFIC REPORTS

IF3.9

2021-03-30

OAAI

Ringvold, Halldis; Taite, Morag; Allcock, A. Louise; Vecchione, Michael; Pean, Michel; Sandulli, Roberto; Johnsen, Geir; Fjellheim, Arne; Bakke, Snorre; Sannaes, Hanne; Synnes, Ann-Elin Waroy; Coronel, Jose; Hansen, Martin; Olejar, Peter G.; Eliassen, Geir; Eliassen, Anita; Klungland, Karl

Advancing Ocean Observation with a AI-Diven Mobile Robotic Explorer

OCEANOGRAPHY

IF2.8

2020-09-01

OAAI

Saad, Aya; Stahl, Annette; Vage, Andreas; Davies, Emlyn; Nordam, Tor; Aberle, Nicole; Ludvigsen, Martin; Johnsen, Geir; Sousa, Joao; Rajan, Kanna

Artificial light during the polar night disrupts Arctic fish and zooplankton behaviour down to 200 m depth

COMMUNICATIONS BIOLOGY

IF5.1

2020-03-05

OAAI

Berge, Jorgen; Geoffroy, Maxime; Daase, Malin; Cottier, Finlo; Priou, Pierre; Cohen, Jonathan H.; Johnsen, Geir; McKee, David; Kostakis, Ina; Renaud, Paul E.; Vogedes, Daniel; Anderson, Philip; Last, Kim S.; Gauthier, Stephane

Physical controls on phytoplankton size structure, photophysiology and suspended particles in a Norwegian biological hotspot

PROGRESS IN OCEANOGRAPHY

IF3.6

2019-07-01

OAAI

Fragoso, Glaucia M.; Davies, Emlyn J.; Ellingsen, Ingrid; Chauton, Matilde S.; Fossum, Trygve; Ludvigsen, Martin; Steinhovden, Kristine B.; Rajan, Kanna; Johnsen, Geir

Trait-based analysis of subpolar North Atlantic phytoplankton and plastidic ciliate communities using automated flow cytometer

LIMNOLOGY AND OCEANOGRAPHY

IF3.7

2019-05-12

OAAI

Fragoso, Glaucia Moreira; Poulton, Alex James; Pratt, Nicola Jane; Johnsen, Geir; Purdie, Duncan Alastair

Underwater Hyperspectral Imaging Using a Stationary Platform in the Trans-Atlantic Geotraverse Hydrothermal Field

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING

IF8.6

2019-05-01

OAAI

Dumke, Ines; Ludvigsen, Martin; Ellefmo, Steinar L.; Soreide, Fredrik; Johnsen, Geir; Murton, Bramley J.

Toward adaptive robotic sampling of phytoplankton in the coastal ocean 沿海海洋浮游植物的适应性机器人采样

SCIENCE ROBOTICS

IF27.5

2019-02-20

OAAI

Fossum, Trygve O.; Fragoso, Glaucia M.; Davies, Emlyn J.; Ullgren, Jenny E.; Mendes, Renato; Johnsen, Geir; Ellingsen, Ingrid; Eidsvik, Jo; Ludvigsen, Martin; Rajan, Kanna

Underwater hyperspectral imaging as an in situ taxonomic tool for deep-sea megafauna 水下高光谱成像作为深海巨型动物的原位分类工具

SCIENTIFIC REPORTS

IF3.9

2018-08-27

OAAI

Dumke, Ines; Purser, Autun; Marcon, Yann; Nornes, Stein M.; Johnsen, Geir; Ludvigsen, Martin; Soreide, Fredrik

Information-driven robotic sampling in the coastal ocean

JOURNAL OF FIELD ROBOTICS

IF5.2

2018-07-16

OAAI

Fossum, Trygve Olav; Eidsvik, Jo; Ellingsen, Ingrid; Alver, Morten Omholt; Fragoso, Glaucia Moreira; Johnsen, Geir; Mendes, Renato; Ludvigsen, Martin; Rajan, Kanna

First hyperspectral imaging survey of the deep seafloor: High-resolution mapping of manganese nodules

REMOTE SENSING OF ENVIRONMENT

IF11.4

2018-05-01

OAAI

Dumke, Ines; Nornes, Stein M.; Purser, Autun; Marcon, Yann; Ludvigsen, Martin; Ellefmo, Steinar L.; Johnsen, Geir; Soreide, Fredrik

研究方向