Explanipedia

Towards operational management of pelagic ecosystems Open

Patrick Lehodey, Inna Senina, Beatriz Calmettes, François Royer, Philippe Gaspar , et al. · 2024

No abstracts are to be cited without prior reference to the author.Satellite data and operational ocean models provide the necessary inputs for ecosystem models of the lower to mid and upper trophic levels. One key explanatory variable tha…

Evaluation of passive acoustic methods for ambient noise baseline and gas flow rate quantification at a proposed nearshore carbon capture and storage site in Australia Open

K. Haris, Najeem Shajahan, Benoît Bergès, Rudy Kloser · 2023

Authors acknowledge the support and guidance provided by both ANLEC R&D and CarbonNet Project staff. Ben Scoulding helped with gas release experiment and quantified flow rate produced by bubble generator. Stacey McCormack from Visual Knowl…

Variability in acoustic backscatter and fish school abundance at a shallow water CCS site Open

Ben Scoulding, Tim Ryan, Ryan Downie, Andrew Ross, Jo Myers , et al. · 2023

Carbon capture and storage (CCS) is one approach used to reduce carbon dioxide (CO2) emissions to the atmosphere. Subsea CO2 storage sites must have low risk of leakage and have minimal impact on the marine environment. Single beam echosou…

The Impact of a Southern Ocean Cyclonic Eddy on Mesopelagic Micronekton Open

Alice Della Penna, Joan Llort, Sébastien Moreau, Ramkrushnbhai Patel, Rudy Kloser , et al. · 2022

Mesoscale eddies shape the foraging ecology of predators such as marine mammals and seabirds. A growing number of animal tracking studies show that predators alter their swimming, diving, and foraging behavior within mesoscale eddies. Howe…

Extended Detection of Shallow Water Gas Seeps From Multibeam Echosounder Water Column Data Open

Amy W. Nau, Ben Scoulding, Rudy Kloser, Yoann Ladroit, VL Lucieer · 2022

Multibeam echosounder water column data provides a three-dimensional image of features between the water surface and the seafloor. Although this swath of acoustic data can be collected over a wide range of angles, most of the data, at leas…

The impact of a Southern Ocean cyclonic eddy on mesopelagic micronekton Open

Alice Della Penna, Joan Llort, Sébastien Moreau, Ramkrushnbhai Patel, Rudy Kloser , et al. · 2021

Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Oceans. ESSOAr is a venue for early communication or feedback before peer review. Data may be prelimin…

Sounding out life in the deep using acoustic data from ships of opportunity Open

K. Haris, Rudy Kloser, Tim Ryan, Ryan Downie, Gordon Keith , et al. · 2021

Recommendations for plankton measurements on the GO-SHIP program with relevance to other sea-going expeditions. SCOR Working Group 154 GO-SHIP Report. [GOOS ENDORSED PRACTICE] Open

Emmanuel Boss, Anya M. Waite, Julia Uitz, Silvia G. Acinas, Heidi M. Sosik , et al. · 2020

Tracking how ocean life is responding to increased human use and climate change will empower the global community to predict, mitigate, and manage our ocean. In this document we demonstrate the existence of mature technologies to measure ‘…

Environmental Assessments of Offshore Carbon Capture and Storage (CCS) Sites Using Unmanned Surface Vehicles (USV) Open

Andreas Marouchos, Bronte Tilbrook, Rudy Kloser, Tim Ryan, Abe Passmore , et al. · 2019

From siphonophores to deep scattering layers: uncertainty ranges for the estimation of global mesopelagic fish biomass Open

Roland Proud, Nils Olav Handegard, Rudy Kloser, Martin J. Cox, Andrew S. Brierley · 2018

The mesopelagic community is important for downward oceanic carbon transportation and is a potential food source for humans. Estimates of global mesopelagic fish biomass vary substantially (between 1 and 20 Gt). Here, we develop a global m…

Modeling What We Sample and Sampling What We Model: Challenges for Zooplankton Model Assessment Open

Jason D. Everett, Mark E. Baird, Pearse Buchanan, Cathy Bulman, Claire H. Davies , et al. · 2017

Zooplankton are the intermediate trophic level between phytoplankton and fish, and are an important component of carbon and nutrient cycles, accounting for a large proportion of the energy transfer to pelagic fishes and the deep ocean. Giv…

RV Investigator Voyage IN2016_E02 End of Voyage (EOV) Archive Open

Australia Csiro, Rudy Kloser, John J. Pogonoski · 2017

This record describes the End of Voyage (EOV) archive from the Marine National Facility (MNF) RV Investigator research voyage in2016_e02, titled "MNF Equipment Sea Trials." The voyage took place from Sydney (NSW) to Hobart (TAS) between De…

Improved estimates of orange roughy biomass using an acoustic-optical system in commercial trawlnets Open

Tim Ryan, Rudy Kloser · 2016

Echo integration is a well-established method for estimating fish biomass, but is challenging for a low target strength (TS), deep-living fish species such as orange roughy (Hoplostethus atlanticus). A novel approach has been to utilize th…

Deep-scattering layer, gas-bladder density, and size estimates using a two-frequency acoustic and optical probe Open

Rudy Kloser, Tim Ryan, Gordon Keith, Lisa‐Ann Gershwin · 2016

Estimating the biomass of gas-bladdered organisms in the mesopelagic ocean is a simple first step to understanding ecosystem structure. An existing two-frequency (38 and 120 kHz) acoustic and optical probe was lowered to 950 m to estimate …

Developing active broadband acoustic methods to investigate the pelagic zone of the Great Australian Bight Open

Arti Verma, Alec J. Duncan, Rudy Kloser · 2016

Investigating the pelagic community of the Great Australian Bight (GAB) remotely and pervasively remains an elusive challenge to the scientific community. Advanced broadband acoustic sounders offer a new tool to help characterise and subse…

Reducing bias due to noise and attenuation in open-ocean echo integration data Open

Tim Ryan, Ryan Downie, Rudy Kloser, Gordon Keith · 2015

Measurements of mean volume backscattering strength (Sv, dB re 1 m−1) at ocean-basin scale were made using 38-kHz hull-mounted echosounders on ships of opportunity as part of Australia's Integrated Marine Observing System. The data were co…

Optimising fisheries management in relation to tuna catches in the western central Pacific Ocean: A review of research priorities and opportunities Open

Karen Evans, Jock Young, Simon Nicol, Dale Kolody, Valérie Allain , et al. · 2015

A combined acoustic and optical instrument for industry managed fisheries studies Open

Mark Underwood, Matt Sherlock, Andreas Marouchos, Jeff Cordell, Rudy Kloser , et al. · 2015

© 2015 IEEE.The design of an existing in-house scientific instrument was used as a basis to create a new model suitable for deployment onto a fishing industry vessel, with a reduced need for specialized technical support. Some of the plann…

Acoustic biomass estimation of mesopelagic fish: backscattering from individuals, populations, and communities Open

Peter C. Davison, J. Anthony Koslow, Rudy Kloser · 2015

Acoustic survey methods are useful to estimate the distribution, abundance, and biomass of mesopelagic fish, a key component of open ocean ecosystems. However, mesopelagic fish pose several challenges for acoustic biomass estimation based …

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