A5062846685- Marine and fisheries research
- Marine Biology and Ecology Research
- Marine Bivalve and Aquaculture Studies
- Coral and Marine Ecosystems Studies
- Marine and environmental studies
- Coastal and Marine Management
- Geology and Paleoclimatology Research
- Fish Ecology and Management Studies
- Microbial Community Ecology and Physiology
- Bayesian Modeling and Causal Inference
- Marine and coastal plant biology
- International Maritime Law Issues
- Isotope Analysis in Ecology
- Global Energy and Sustainability Research
- Nuclear and radioactivity studies
- Underwater Acoustics Research
- Graphite, nuclear technology, radiation studies
- Marine and coastal ecosystems
- Business Law and Ethics
- Sustainability and Ecological Systems Analysis
- Thermal Regulation in Medicine
- Methane Hydrates and Related Phenomena
- Cancer-related gene regulation
- Crustacean biology and ecology
- Ecosystem dynamics and resilience
Stellenbosch University
2023
Centre for Process Innovation
2023
Centre for Environment, Fisheries and Aquaculture Science
2013-2022
City of Cape Town
2008
University of Cape Town
2003
University of the Witwatersrand
1999
Abstract A wide range of seabed-mapping technologies is reviewed in respect to their effectiveness discriminating benthic habitats at different spatial scales. Of the seabed attributes considered important controlling community marine sands and gravel, sediment grain size, porosity or shear strength, dynamics were highlighted as most important. Whilst no one mapping system can quantify all these same time, some may be estimated by skilful interpretation remotely sensed data. For example,...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 541:31-43 (2015) - DOI: https://doi.org/10.3354/meps11550 Similar effects of bottom trawling and natural disturbance on composition function benthic communities across habitats P. Daniël van Denderen1,2,5,*, Stefan G. Bolam3, Jan Geert Hiddink4, Simon Jennings3, Andrew Kenny3, Adriaan D. Rijnsdorp1,2, Tobias...
Abstract A framework to assess the impact of mobile fishing gear on seabed and benthic ecosystem is presented. The that can be used at regional local scales provides indicators for both trawling pressure ecological impact. It builds high-resolution maps intensity considers physical effects trawl gears seabed, marine taxa, functioning ecosystem. Within framework, a reductionist approach applied breaks down into its components, number biological traits are chosen determine either vulnerability...
Abstract Purpose Microalgae-derived biofuels are considered a low-carbon alternative to fossil fuels. Nevertheless, as with all biofuels, there is still uncertainty around their sustainability. Most life cycle assessments (LCA) of microalgae so far used lab-based, scaled-up lab experimental data or from the scientific literature. This article, provides evidence and analysis, undertaking an LCA using real-world industrial facility that uses combination photobioreactor fermenter systems....
Ecosystems consist of complex dynamic interactions among species and the environment, understanding which has implications for predicting environmental response to changes in climate biodiversity. However, with recent adoption more explorative tools, like Bayesian networks, predictive ecology, few assumptions can be made about data complex, spatially varying recovered from collected field data. In this study, we compare network modelling approaches accounting latent effects reveal dynamics 7...
The United Nations General Assembly Resolution 61/105, concerning sustainable fisheries in the marine ecosystem, calls for protection of vulnerable ecosystems (VME) from destructive fishing practices. Subsequently, Food and Agriculture Organization (FAO) produced guidelines identification VME indicator species/taxa to assist implementation resolution, but recommended development case-specific operational definitions their application. We applied kernel density estimation (KDE) research...
Abstract The application of a biological traits analysis, in the present study, has allowed benthic habitat sensitivities and their risk impact to be mapped at spatial scale appropriate for assessment North Sea ecoregion. This study considered impacts associated with five important marine sectors; bottom fishing, aggregate dredging, sediment disposal, renewable energy devices (tidal, waves, wind) oil gas sectors, both individually cumulatively. significance “actual” footprint arising from...
Recently, the role which fisheries play in provision of marine ecosystem services has been more widely acknowledged, largely as a result recent years management organisations developing and adopting ecosystem-based approaches to (EAFM). Accordingly, several important science challenges have identified. We argue that these represent number steps underpin effective based management, when taken together integrated, offer logical framework by best achieve an EAFM. The challenges, or framework,...
The Northwest Atlantic Fisheries Organization (NAFO) Roadmap is the general framework aimed toward implementing an Ecosystem Approach to (EAF) in NAFO. core principles are: a) approach has be objective-driven, b) it should consider long-term ecosystem sustainability, c) must place-based, and d) consequences of trade-offs managing human activities have explicitly defined. not a fixed plan; evolves as different components are developed, refined, implemented. Core elements include...
Biodiversity loss due to human activities is a critical ecological challenge, particularly in the High Seas where bottom-contact fishing poses significant threat Vulnerable Marine Ecosystems (VMEs). These ecosystems, composed of slow-growing, long-lived benthic organisms like deep-sea corals and sponges, are often found geomorphological features such as seamounts canyons. The United Nations General Assembly Food Agriculture Organization (FAO) have developed guidelines protect these...
Abstract The recent adoption of Bayesian networks (BNs) in ecology provides an opportunity to make advances because complex interactions can be recovered from field data and then used predict the environmental response changes climate biodiversity. In this study, we use a dynamic BN model with hidden variable spatial autocorrelation explore future different fish zooplankton species, given alternate scenarios, across scales within North Sea. For most were able trend increase or decline change...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 305:203-217 (2005) - doi:10.3354/meps305203 Predicting site quality for shorebird communities:a case study on Humber estuary, UK Richard A. Stillman1,*, Andrew D. West1, John Goss-Custard1, Selwyn McGrorty1, Natalie J. Frost2, Donald Morrisey2,3, Kenny2,4, Allan L. Drewitt5 1Centre and Hydrology Dorset,...
Abstract Management and technical approaches that achieve a sustainable level of fish production while at the same time minimizing or limiting wider ecological effects caused through fishing gear contact with seabed might be considered to ‘best practice’. To identify future knowledge‐needs would help support transition towards adoption best practices for trawling, prioritization exercise was undertaken group 39 practitioners from seafood industry management, 13 research scientists who have...
An understanding of the balance interspecific competition and physical environment in structuring organismal communities is crucial because those structured primarily by their typically exhibit greater sensitivity to environmental change than predominantly competitive interactions. Here, using detailed phylogenetic functional information, we investigate this question macrofaunal assemblages from Northwest Atlantic Ocean continental slopes, a high seas region projected experience substantial...
In areas beyond national jurisdiction, there are ten regional fisheries bodies (RFBs) responsible for the management of bottom (ABNJ). Eight these organisations further termed 'Regional Fisheries Management Organisations' (RFMOs) and have a legal mandate to regulate sustainable use marine living resources on high seas. The remaining two, both in equatorial Atlantic, limited advisory roles. Here we present comparisons between organisations' deep-water demersal fisheries, with particular...
Scientific interest in deep-water marine resources has increased dramatically over the last 10–20 years as management bodies have sought advice on how to manage fisheries and protect ecosystems. The strengths weaknesses of monitoring stocks, fisheries, ecosystems various areas world are described, with objective informing EU FP7 DEEPFISHMAN project so that it can fulfill its primary aim, which is develop strategic options for a short- long-term ecosystem-based framework northeast Atlantic....
Vulnerable marine ecosystems (VMEs) are considered hotspots of biodiversity and ecosystem functioning in the deep sea, but also characterised by a high vulnerability to disturbance low recovery potential. Since 2006, series United Nations General Assembly resolutions have been developed, attempting ensure protection VMEs international waters. In Northwest Atlantic Fisheries Organisation (NAFO) Regulatory Area, large areas seabed closed bottom-contact fishing protect VMEs. However, knowledge...