Studies of Phytoplankton Dynamics and Harmful Algal Blooms in the Santa Barbara, California Near Shore Shelf System PDF Download
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Author: Goodman Jo A.
Publisher:
ISBN:
Category :
Languages : en
Pages : 192
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Book Description
Author: Goodman Jo A.
Publisher:
ISBN:
Category :
Languages : en
Pages : 192
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Book Description
Author: Babin, Marcel
Publisher: UNESCO
ISBN: 9231040421
Category : Nature
Languages : en
Pages : 880
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Book Description
The proliferation of harmful phytoplankton in marine ecosystems can cause massive fish kills, contaminate seafood with toxins, impact local and regional economies and dramatically affect ecological balance. Real-time observations are essential for effective short-term operational forecasting, but observation and modelling systems are still being developed. This volume provides guidance for developing real-time and near real-time sensing systems for observing and predicting plankton dynamics, including harmful algal blooms, in coastal waters. The underlying theory is explained and current trends in research and monitoring are discussed.Topics covered include: coastal ecosystems and dynamics of harmful algal blooms; theory and practical applications of in situ and remotely sensed optical detection of microalgal distributions and composition; theory and practical applications of in situ biological and chemical sensors for targeted species and toxin detection; integrated observing systems and platforms for detection; diagnostic and predictive modelling of ecosystems and harmful algal blooms, including data assimilation techniques; observational needs for the public and government; and future directions for research and operations.
Author: Clarissa Ruth Anderson
Publisher: ProQuest
ISBN: 9780549152514
Category :
Languages : en
Pages : 332
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Book Description
The toxigenic bloom of May 2003 was predominantly comprised of the diatom Pseudo-nitzschia australis. Satellite imagery revealed the presence of the bloom prior to a period of strong, spring upwelling along the continental shelf of the SBC. Following upwelling, the bloom increased in areal extent to cover most of the SBC. Pseudo-nitzchia australis abundance ranged from 0.4 x 105--2 x 10 6 cells L-1 with particulate domoic acid (DA) concentrations between 32 and 1,684 ng L-1. Significant negative correlations between silicic acid, Si(OH)4:NO3- and Si(OH)4:PO43- ratios, and particulate DA suggest that the bloom may have been experiencing Si limitation. High cell abundance and the highest levels of cellular DA (0.14--2.1 pg cell-1) were associated with a cyclonic eddy in the western end of the SBC. Cyclonic eddies within the SBC are known to be convergent which may have concentrated P. australis cells within this feature. Propagation of the eddy transported the bloom to the west indicating that coherent circulation features may help predict the fate of harmful algal blooms in coastal systems.
Author: Elisa R. Halewood
Publisher:
ISBN:
Category :
Languages : en
Pages : 162
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Author: Donald Mark Anderson
Publisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 696
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Book Description
Proceedings of the NATO Advanced Study Institute on "The Physiological Ecology of Harmful Algal Blooms", held at the Bermuda Biological Station for Research, Bermuda, May 27- June 6, 1996
Author: Donald F. Boesch
Publisher:
ISBN:
Category : Algal blooms
Languages : en
Pages : 68
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Author: Hally B. Stone
Publisher:
ISBN:
Category :
Languages : en
Pages : 165
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Book Description
This dissertation examines the effect of transport on coastal productivity and harmful algal blooms in coastal upwelling systems in three parts, using the Pacific Northwest coastal ocean (also referred to as the Northern California Current System) and the greater California Current System (CCS) as a case study. These three studies utilize a combination of observations and model output. Chapter 2 investigates the effects of upwelling variability and large-scale advection on slope and shelf water properties in the Northern CCS using both Eulerian and Lagrangian analyses in a 7-year ROMS hindcast model. Results suggest that variability in the depth of the California Undercurrent as well as in alongshore local and remote wind stress are responsible for about 50% of shelf bottom water variability, and that the shelf and slope experience similar large-scale alongcoast advection patterns. These results were then combined with observations of dissolved oxygen and dissolved inorganic carbon concentrations to approximate the relative effects of variability in upwelling and in large-scale advection on shelf and slope water properties. Next, in Chapter 3, we examine the relationship between phytoplankton productivity, wind patterns, and retention in the Northern and Central CCS using chlorophyll concentration and wind stress derived from satellite observations, as well as particle tracking experiments conducted in the same ROMS model. Results from this analysis suggest that while there is a dome-shaped relationship between mean chlorophyll concentration and wind stress for the whole system, the Central and Northern CCS have significantly different relationships. However, results from the particle tracking experiments suggest that the effect of wind intermittency on retention is minimal in the Northern CCS on a 1° latitude-wide scale. Lastly, we present a revised hypothesis to describe the relationship between chlorophyll concentration and wind stress in the CCS that includes the influence of non-upwelling-derived nutrients in the Northern CCS. Finally, in Chapter 4 we use similar particle tracking experiments combined with observations of Pseudo-nitzschia cells at Pacific Northwest coastal beaches and meridional wind stress to test whether the model reproduces the observed beaching patterns of Pseudo-nitzschia cells. With the goal of improving how the model is used to forecast beaching events, we test a suite of beaching criteria as well as two resolutions of the model. Results suggest that allowing for multiple coastal proximity events as well as using the loosest beaching criteria resulted in the most successfully simulated HAB events in the medium-resolution version of the model, and that the high-resolution version of the model performed best overall. All together, these three studies help elucidate the numerous effects that transport, both positive and negative, can have on the biology of the coastal ocean.
Author: Fernanda da Frota Mattos Mazzillo
Publisher:
ISBN:
Category :
Languages : en
Pages : 310
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Author: United States. Congress. House. Committee on Science. Subcommittee on Environment, Technology, and Standards
Publisher:
ISBN:
Category : Medical
Languages : en
Pages : 120
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Book Description
Author: Patricia M. Glibert
Publisher: Springer
ISBN: 3319700693
Category : Science
Languages : en
Pages : 460
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Book Description
Harmful algal blooms (HABs) - blooms that cause fish kills, contaminate seafood with toxins, or cause human or ecological health impacts and harm to local economies - are occurring more often, in more places and lasting longer than in past decades. This expansion is primarily the result of human activities, through increased nutrient inputs and various aspects of climate change. The Global Ecology and Oceanography of Harmful Algal Blooms (GEOHAB) programme promoted international collaboration to understand HAB population dynamics in various oceanographic regimes and to improve the prediction of HABs. This volume introduces readers to the overarching framework of the GEOHAB programme, factors contributing to the global expansion of harmful algal blooms, the complexities of HABs in different habitats, and the forward-looking issues to be tackled by the next generation of GEOHAB, GlobalHAB. The programme brought together an international team of contributing scientists and ecosystem managers, and its outcomes will greatly benefit the international research community.
