A5013179942- Marine and fisheries research
- Fish Ecology and Management Studies
- Coral and Marine Ecosystems Studies
- Marine Bivalve and Aquaculture Studies
- Coastal and Marine Management
- Fish Biology and Ecology Studies
- Isotope Analysis in Ecology
- Marine animal studies overview
- Crustacean biology and ecology
- Identification and Quantification in Food
- Ichthyology and Marine Biology
- International Maritime Law Issues
- Cephalopods and Marine Biology
- African history and culture studies
- Plant and animal studies
- American Political and Social Dynamics
- Marine Biology and Ecology Research
- Intelligence, Security, War Strategy
- Environmental and Social Impact Assessments
- Sustainable Development and Environmental Policy
- Eastern European Communism and Reforms
- Pharmaceutical and Antibiotic Environmental Impacts
- Parasite Biology and Host Interactions
- History, Medicine, and Leadership
- Fish biology, ecology, and behavior
University of Tasmania
2012-2024
Centre for Marine Socioecology
2015-2023
CSIRO Oceans and Atmosphere
1986-2022
Commonwealth Scientific and Industrial Research Organisation
1982-2003
University of Canterbury
1982
Ecosystem-based fishery management (EBFM) is a new direction for management, essentially reversing the order of priorities so that starts with ecosystem rather than target species. EBFM aims to sustain healthy marine ecosystems and fisheries they support. Pikitch et al . describe potential benefits implementation that, in their view, far outweigh difficulties making transition from system based on maximizing individual
Ecosystem objectives in fisheries management usually flow from high-level national policies or strategies and international agreements. Consequently they are often broadly stated hence difficult to incorporate directly plans. Predicting the results of any action is very uncertain because the dynamics ecosystems complex poorly understood. Methods design and evaluate operational have advanced considerably past decade. These management-strategy-evaluation (MSE) methods rely on...
Abstract Forage fish play a pivotal role in marine ecosystems and economies worldwide by sustaining many predators fisheries directly indirectly. We estimate global forage contributions to through synthesis of 72 published E copath models from around the world. Three distinct were examined: (i) ecological support service ecosystems, (ii) total catch value (iii) other commercially targeted predators. use varied exhibited patterns across latitudes ecosystem types. supported kinds predators,...
Globally, many fish species are overexploited, and stocks have collapsed. This crisis, along with increasing concerns over flow-on effects on ecosystems, has caused a reevaluation of traditional fisheries management practices, new ecosystem-based (EBFM) paradigm emerged. As part this approach, selective fishing is widely encouraged in the belief that nonselective adverse impacts. In particular, incidental bycatch seen as wasteful negative feature fishing, methods to reduce implemented...
By analysing data sets from different world regions we add evidence to documented changes in demersal fish community structure that may be related fishing. Changes are analysed by properties might expected capture relevant overall – size spectra slopes and intercepts, Shannon-Wiener diversity, dominance. Cross-system differences the shape of integrated appear ecosystem productivity. The slope appears respond a consistent way exploitation levels. In most areas studied, but particularly...
Following an introduction to the broader context of Symposium, scope oral presentations is summarized under three themes: a global synthesis fisheries impacts in different ecosystems; overview methods available for quantifying ecosystem impacts; and integration environmental management. The generated substantial evidence that marine ecosystems have been impacted by fishing. Also there appeared be broad consensus present approach achieving conservation objectives management does not...
The growth in length of a group animals is examined. Each animal assumed to grow according the von Bertalanffy model with fixed parameters, but these parameters are allowed differ between individuals. Equations governing mean and variance at given age increment provided, their implications discussed. Results indicate that traditional equation likely result an underestimate value K when either or data analyzed. This problem does not appear serious using data. However, problems interpretation...
Abstract Evaluating the status of data-poor fish stocks is often limited by incomplete knowledge basic life history parameters: natural mortality rate (M), von Bertalanffy growth parameters (L∞ and k), length at maturity (Lm). A common approach to estimate these individual has been use Beverton–Holt invariants, ratios M/k Lm/L∞, especially for estimating M. In this study, we assumed no parameters, explored how information on strategy contained in can be applied assessing stocks. We developed...
Abstract The complexity and cost of assessment techniques prohibits their application to 90% fisheries. Simple generic approaches are needed for the world's small-scale data-poor This meta-analysis relationship between spawning potential normalized size age 123 marine species suggests that so-called Beverton–Holt life-history invariants (BH-LHI; Lm/L∞, M/k, M × Agem) actually vary together in relation strategy, determining size, age, reproductive each species. Although little realized,...
Concerns over fishing impacts on marine populations and ecosystems have intensified the need to improve ocean management. One increasingly popular market-based instrument for ecological stewardship is use of certification eco-labeling programs highlight sustainable fisheries with low environmental impacts. The Marine Stewardship Council (MSC) most prominent these programs. Despite widespread discussions about rigor MSC standards, no comprehensive analysis performance MSC-certified fish...
Abstract The majority of the world's fisheries, by number, are data‐poor/limited, and there is a growing body literature pertaining to approaches estimate data‐limited stock status. There at least two drivers for assessing status fisheries. first try understand report on global or regional fisheries across many stocks. second attempt assess individual stocks, reporting and/or guiding management decisions. These have led attempts find simple, generic, low‐cost solutions, including broad...
In European fisheries, most stocks are overfished and many below safe biological limits, resulting in a call from the Commission for new long-term fisheries management plans. Here, we propose set of intuitive harvest control rules that economically sound, compliant with international fishery agreements, based on relevant experiences, supportive ecosystem-based compatible biology fish stocks. The concept maximum sustainable yield (MSY), precautionary target biomass is 30% larger than which...
Abstract Ecosystem-based management (EBM) is now widely accepted as the best means of managing complex interactions in marine systems. However, progress towards implementing and operationalizing it has been slow. We take a pragmatic approach to EBM. Our simple definition balancing human activities environmental stewardship multiple-use context. In this paper, we present case studies on development implementation EBM Australia. The (Australia’s Ocean Policy, Great Barrier Reef, New South...
Ecosystem-based fisheries management (EBFM) is a globally mandated approach with the intention to jointly address ecological and human (social-cultural, economic institutional) dimensions. Indicators measure performance against objectives have been suggested, tested, refined but strong bias towards indicators. In this paper, current use application of indicators related dimension in EBFM research ecosystem models are analysed. It found that compared counterparts, few commonly associated...
Abstract The biology of an unfished population the paua, Haliotis iris Martyn, in Peraki Bay, Banks Peninsula, was studied from 1973 to 1976. In February 1976 consisted about 179 000 animals on 4.5 km coastline. length/frequency distribution strongly skewed left, indicating accumulation old individuals and a recent history low recruitment. Growth <70 mm long determined changes length frequency, larger by analysis tag returns. mean parameters von Bertalanffy growth equation for study are K =...
Abstract Smith, A. D. M., Smith C., Haddon, Knuckey, I., Sainsbury, K. J., and Sloan, S. 2014. Implementing harvest strategies in Australia: 5 years on. – ICES Journal of Marine Science, 71: 195–203. Australian Commonwealth fisheries are managed using a formal strategy policy (HSP) introduced by the federal government 2007. At State level, number commercial also under strategies, but no overarching currently exists to guide their consistent implementation across jurisdictions. There have...