Global Fisheries Sustainability and Challenges Vocabulary Flashcards

Vocabulary flashcards reviewing core ecological indicators, stock assessment concepts, and emerging issues in global marine fisheries based on recent literature.

Ecosystem-Based Management (EBM)

An integrated management approach that shifts focus away from single-species stock optimization toward maintaining ecosystem health, preserving trophic interactions, and conserving non-targeted ecosystem components.

Effective Fishing Effort

A measure of fishing effort reflecting actual mortality capacity inflicted on fish stocks, incorporating efficiency gains from technological creep, which increased globally by nearly $72\%$ between 2008–2012 and 2013–2017.

Technological Creep

The steady advancement in fishing gear, navigation, electronics, and mechanization that systematically elevates fishing efficiency and vessel catching power over time.

Phantom Recoveries

Repeated, overoptimistic stock recovery projections generated by complex stock assessment models with unreliably estimated parameters, justifying excessive quotas despite actual biomass continuing to decline.

Red List Index (RLI)

An indicator created by the IUCN to track overall changes in the extinction risk of species groups over time based on movement between threat categories.

Marine Trophic Index (MTI)

An ecological metric that tracks the average trophic level of fish landings, used to measure shifts in marine food webs and the impact of industrial fishing.

Fishing Down Marine Food Webs

The progressive industrial depletion of large, high-trophic-level predatory fish in catches, forcing fleets to sequentially target smaller, lower-trophic-level organisms.

Ghost Fishing

The continuous, unintended mortality of marine organisms caused by abandoned, lost, or discarded fishing gear left in ocean ecosystems.

Distant-Water Fleets (DWF)

Industrial fishing vessels that operate far beyond their national territorial waters, frequently expanding into the high seas and foreign Exclusive Economic Zones (EEZs).

Northern Cod (Gadus morhua)

A historic northwest Atlantic fish stock that collapsed in 1992 after four decades of heavy trawling, falling to $1\%$–$2\%$ of its 1950 biomass level.

Global Fishing Watch

A public platform that uses satellite tracking of vessel Automatic Identification Systems (AIS) to provide transparent monitoring of commercial fishing operations worldwide.

Blue Economy

A policy strategy promoting economic development and marine industrial growth alongside ocean health, which risks intensifying marine exploitation if unmanaged.

Discards to Landings Ratio

The proportion of total caught marine biomass thrown back into the ocean relative to landed catches, which has stabilized at approximately $8\%$ globally in recent decades.

Maximum Sustainable Yield Model Bias

A systemic assessment error where multi-parameter stock models predict Maximum Sustainable Yield (MSY) when stock biomass is lower than $50\%$ of unfished biomass, fostering overfishing.

Species Turnover

The climate-driven change in local marine community species composition caused by marine life shifting geographic ranges in response to warming ocean temperatures.