A5034215566- Marine and fisheries research
- Marine Bivalve and Aquaculture Studies
- Coral and Marine Ecosystems Studies
- Marine and coastal plant biology
- Marine Biology and Ecology Research
- Fish Ecology and Management Studies
- Isotope Analysis in Ecology
- Ichthyology and Marine Biology
- Algal biology and biofuel production
- Fish biology, ecology, and behavior
- Market Dynamics and Volatility
- Botanical Research and Applications
- Food Industry and Aquatic Biology
- Climate Change Policy and Economics
- Cephalopods and Marine Biology
- Global Energy and Sustainability Research
- Crustacean biology and ecology
- Marine and coastal ecosystems
- Morphological variations and asymmetry
- Oceanographic and Atmospheric Processes
- Evolution and Paleontology Studies
- Coastal and Marine Management
University of Washington
2014-2023
Fisheries and Oceans Canada
2019
University of British Columbia
2019
Centro Científico Tecnológico Patagónico
2010-2017
University of Rhode Island
2017
CSIRO Oceans and Atmosphere
2017
National University of Patagonia San Juan Bosco
2004-2010
Marine fish stocks are an important part of the world food system and particularly for many poorest people world. Most existing analyses suggest overfishing is increasing, there widespread concern that decreasing throughout most We assembled trends in abundance harvest rate scientifically assessed, constituting half reported global marine catch. For these stocks, on average, increasing at proposed target levels. Compared with regions intensively managed, less-developed fisheries management...
Significance Bottom trawling is the most widespread source of physical disturbance to world’s seabed. Predictions impacts are needed underpin risk assessment, and they relevant for fishing industry, conservation, management, certification bodies. We estimate depletion recovery seabed biota after by fitting models data from a global compilation. Trawl gears removed 6–41% faunal biomass per pass, times posttrawling were 1.9–6.4 y depending on fisheries environmental context. These results...
Significance We conducted a systematic, high-resolution analysis of bottom trawl fishing footprints for 24 regions on continental shelves and slopes five continents New Zealand. The proportion seabed trawled varied >200-fold among (from 0.4 to 80.7% area depth 1,000 m). Within 18 regions, more than two-thirds remained untrawled during study periods 2–6 years. Relationships between metrics total trawling activity footprint were strong positive, providing method estimate where data are not...
Fish stocks fluctuate both in abundance and productivity (net population increase), there are many examples demonstrating that increased or decreased due to changes caused by fishing and, alternatively, where shifted between low high regimes, entirely unrelated abundance. Although shifts regimes have been described, their frequency intensity not previously assessed. We use a database of trends harvest 230 fish evaluate the proportion which is primarily related vs. those appear manifest...
Abstract Bottom‐contact fishing gears are globally the most widespread anthropogenic sources of direct disturbance to seabed and associated biota. Managing these disturbances requires quantification gear impacts on biota rate recovery following disturbance. We undertook a systematic review meta‐analysis 122 experiments effects‐of‐bottom quantify removal benthos in path estimate rates A pass reduced benthic invertebrate abundance by 26% species richness 19%. The effect was strongly...
This paper explores the impact of fishing low trophic level "forage" species on higher marine predators including other fish, birds and mammals. We show that existing analyses using models have generally ignored a number important factors (1) high natural variability forage (2) weak relationship between fish spawning stock size recruitment role environmental productivity regimes, (3) distribution their subsequent selective predation (4) changes in spatial as it influences reproductive...
Abstract Bottom trawling accounts for almost one quarter of global fish landings but may also have significant and unwanted impacts on seabed habitats biota. Management measures voluntary industry actions can reduce these impacts, helping to meet sustainability objectives fisheries, conservation environmental management. These include changes in gear design operation trawls, spatial controls, impact quotas effort controls. We review nine different use published studies a simple conceptual...
Significance We estimated the biological state of seabed sedimentary habitats, with specified uncertainty, in 24 trawled regions worldwide. Seabed status differed greatly among (from 0.25 to 0.999, relative an untrawled 1); 15 had average > 0.9. Two-thirds all assessed area was = 1, 93% 0.8, but 1.5% 0. The total swept by trawling a strong driver regional status, providing relationship predict from amount trawling. is high where fisheries are exploited sustainably—emphasizing that good...
Abstract Mobile bottom contact gear such as trawls is widely considered to have the highest environmental impact of commonly used fishing gears, with concern about on benthic communities, bycatch, and carbon footprint frequently highlighted much higher than other forms fishing. As a result, use gears has been banned or severely restricted in some countries, there are many proposals implement restrictions elsewhere. In this paper, we review sustainability trawling respect target-species...
Summary Impacts of bottom fishing, particularly trawling and dredging, on seabed ( benthic ) habitats are commonly perceived to pose serious environmental risks. Quantitative ecological risk assessment can be used evaluate actual risks help guide the choice management measures needed meet sustainability objectives. We develop apply a quantitative method for assessing by towed bottom‐fishing gears. The is based simple equation relative status (RBS), derived solving logistic population growth...
San Jose Gulf is a small semienclosed bay connected by narrow mouth to much larger basin, the Matias Gulf. Intriguingly, this comparatively water body, characterized high biological productivity, has contributed most of historical shellfish production in region.A remote sensing approach allowed us advance composite conjecture aimed at explaining that phenomenon. A combination circulation, strong tidal currents, and coastal topography leads formation frontal system inside development...
Coastal Patagonia, often regarded as a pristine area of the world, has been invaded by non-indigenous species that are rapidly modifying local ecosystems.One most conspicuous invaders is kelp Undaria pinnatifida.First recorded near city Puerto Madryn (Argentina, 42.75°S) in 1992, Undaria's range expanded more than five degrees latitude to south during last 15 years.By 2007 it was first detected north Valdés Peninsula (a natural barrier dispersal), beginning its northward expansion, and...
Hatchery production of juvenile fish for release into the wild has been practiced well over a century in an effort to increase number salmon available harvest. In this study, we evaluate net impact largest such program North America, hatchery pink (Oncorhynchus gorbuscha) Prince William Sound (PWS), Alaska. At same time was increasing output, there major change productivity Pacific so that throughout Alaska increased dramatically abundance between 1970s and 2000s. Using other regions as...
Abstract Bottom trawl fishing is a controversial activity. It yields about quarter of the world's wild seafood, but also has impacts on marine environment. Recent advances have quantified and improved understanding large‐scale trawling seabed. However, such information needs to be coupled with distributions benthic invertebrates (benthos) assess whether these populations are being sustained under current regimes. This study collated data from 13 diverse regions globe spanning four...
Abstract Amoroso, R. O., Parma, A. M., Orensanz, J. and Gagliardini, D. 2011. Zooming the macroscope: medium-resolution remote sensing as a framework for assessment of small-scale fishery. – ICES Journal Marine Science, 68: 696–706. Management fisheries targeting sedentary stocks requires integration information about processes operating observable at different spatial temporal scales. An integrated approach was developed with scallop (Aequipecten tehuelchus) fishery in small, semi-enclosed...
As the world population grows, fisheries practitioners will be under increased pressure to address global challenges in data-limited management. With a focus on addressing localized and case-specific management needs, we provide practical guide design development of multi-indicator frameworks for fishery In context, indicators are observations or estimates state resource that typically proxies variables interest, rather than quantities such as stock biomass estimated from data-rich...
AB Aquatic Biology Contact the journal Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 11:149-155 (2010) - DOI: https://doi.org/10.3354/ab00301 Shell morphology changes in scallop Aequipecten tehuelchus during its life span: a geometric morphometric approach Federico Márquez1,2,3,*, Ricardo Amoroso1,2, María Florencia Gowland Sainz2, Silvina Van der Molen1 1Centro Nacional Patagónico CENPAT – CONICET, Blvd. Brown 2915...
During 1994-96, an experimental longline fishery for tope shark (Galeorhinus galeus) was carried out in the Nuevo Gulf of northern Patagonia and, summers 2000-2001 and 2002, three boats conducted exploratory commercial this species, accompanied by a scientific monitoring program.This paper summarizes results these fishing trials, provides information on biology shark.Catches were highest from February to April, when represented 36% total fish caught, elephant (Callorhynchus callorhynchus)...
The Argentine coastal zone, with its highly productive waters, allows the existence of important seabird and marine mammal breeding assemblages, fish crustacean spawning nursery areas, extensive macroalgae mollusk beds.Knowledge factors determining dynamics waters is urgently needed to help understand their influence on biological processes biodiversity.Available information in region currently scarce due low number oceanographic cruises modeling studies.We evaluate capacity high-resolution...