Biophysical processes that affect subsurface water clarity play a key role in ecosystem function. However, is poorly monitored marine ecosystems because doing so requires in-situ sampling logistically difficult to conduct and sustain. Novel solutions are thus needed improve monitoring of clarity. To end, we developed method data processing algorithm enable the use bottom trawl fishing gear as p...

We explore the potential of using data from Australia’s northern prawn fishery (NPF) vessel monitoring system(s) (VMS) to examine trawl track, trawling intensity, and stock depletion due to trawling. We simulate VMS data by subsampling global positioning system (GPS) fixes from the NPF fishing vessels at different polling intervals to examine their accuracy in describing trawl tracks. The resul...

BACKGROUND The Firth of Clyde is a large inlet of the sea that extends over 100 km into Scotland's west coast. METHODS We compiled detailed fisheries landings data for this area and combined them with historical accounts to build a picture of change due to fishing activity over the last 200 years. FINDINGS In the early 19th century, prior to the onset of industrial fishing, the Firth of Cly...

Two key measures of economic performance are calculated and analyzed for three important Italian trawl fisheries (Northern Thyrrenian Sea, South of Sicily, Northern Adriatic Sea): the Net Economic Returns (NER), which informs on the economic performance and is considered a proxy of resource rent in fisheries and the Return on Fixed Tangible Assets (ROFTA), which is used as an approximation of t...

Shrimp trawling represents an important fishing métier in South India, generating high levels of employment and economic value. It is also a contested métier, ostensibly contributing to environmental degradation and social inequality. This paper investigates the job satisfaction of crew members (captains and workers) on board the shrimp trawlers of Chennai (former Madras). Research took place i...

Throughout all oceans, aggregations of zooplankton and ichthyoplankton appear as horizontal sound scattering layers (SSLs) when detected with active acoustic techniques. Quantifying the composition density these is prone to sampling biases. We conducted a net trawl survey epipelagic fauna in northern Norway (70° N) June 2018 while an autonomous surface vehicle equipped broadband echosounder (28...