Author
Andrew De Vogelaere
Bio: Andrew De Vogelaere is an academic researcher from California State University, Monterey Bay. The author has contributed to research in topics: Bay & Juvenile. The author has an hindex of 3, co-authored 5 publications receiving 774 citations.
Topics: Bay, Juvenile, Predation, Marine mammal, Ridge (meteorology)
Papers
More filters
Monterey Bay Aquarium Research Institute1, The Marine Mammal Center2, National Ocean Service3, Moss Landing Marine Laboratories4, National Marine Fisheries Service5, California State University, Monterey Bay6, University of California, Santa Cruz7, Armed Forces Institute of Pathology8, California Health and Human Services Agency9, University of California, Davis10, University of North Carolina at Chapel Hill11, Colorado State University12, National Oceanic and Atmospheric Administration13
TL;DR: Findings reveal that monitoring of mussel toxicity alone does not necessarily provide adequate warning of DA entering the food web at levels sufficient to harm marine wildlife and perhaps humans.
Abstract: Over 400 California sea lions (Zalophus californianus) died and many others displayed signs of neurological dysfunction along the central California coast during May and June 1998. A bloom of Pseudo-nitzschia australis (diatom) was observed in the Monterey Bay region during the same period. This bloom was associated with production of domoic acid (DA), a neurotoxin1 that was also detected in planktivorous fish, including the northern anchovy (Engraulis mordax), and in sea lion body fluids. These and other concurrent observations demonstrate the trophic transfer of DA resulting in marine mammal mortality. In contrast to fish, blue mussels (Mytilus edulus) collected during the DA outbreak contained no DA or only trace amounts. Such findings reveal that monitoring of mussel toxicity alone does not necessarily provide adequate warning of DA entering the food web at levels sufficient to harm marine wildlife and perhaps humans.
794 citations
01 Jan 2011
TL;DR: In this article, the authors describe a network of collaborators and information dissemination for ecosystem monitoring, and present a timeline of products and products used for this purpose. But they do not discuss the long-term trends in volunteer training and volunteer recruitment.
Abstract: ......................................................................................................................... v Acknowledgements ............................................................................................ vi List of Figures and Tables ........................................................................................viii Introduction................................................................................................................... 1 Methods.......................................................................................................................... 3 Sampling Design............................................................................................ 3 Volunteer Training......................................................................................... 4 Trends in Deposition...................................................................................... 5 Causes of Mortality........................................................................................ 6 Documenting oiling and presence of tar balls on beaches............................. 6 Unusual Mortality Events .............................................................................. 7 Developing a network of collaborators and information dissemination........ 9 Results and Discussion ............................................................................................... 10 Survey Effort ............................................................................................... 10 Volunteer Program....................................................................................... 10 Long-term Trends in Deposition ................................................................. 12 UnusualMortality Events ............................................................................. 17 Highlights .................................................................................................... 19 Documenting oil on beaches & oiled wildlife ............................................. 21 Discussion..................................................................................................................... 23 Volunteers as Citizen Scientists................................................................... 23 Deposition Rate is an Index of Mortality .................................................... 23 Standardized Effort ...................................................................................... 24 Baseline Parameters for Ecosystem Monitoring.......................................... 24 Documenting oiling and presence of tar balls on beaches........................... 26 Oiled Birds................................................................................................... 27 Fishery Bycatch ........................................................................................... 28 Harmful Algal Blooms ................................................................................ 28 Management Recommendations.............................................................................. 30 Literature Cited .......................................................................................................... 31 Appendix A: Protocol................................................................................................. 54 Appendix B: Datasheets............................................................................................. 57 Appendix C: Timeline of products........................................................................... 60
11 citations
TL;DR: In this article, the authors observed that juveniles of the lithodid crab Neolithodes diomedeae were frequently observed on or under the holothurian sea cucumber Scotoplanes sp.
Abstract: Vulnerability to predation may be high for many megafaunal taxa in deep-sea sedimentary habitats where physical heterogeneity is low. During ROV observations in a bathyal sediment plain off Central California, juveniles of the lithodid crab Neolithodes diomedeae were frequently observed on or under the holothurian (sea cucumber) Scotoplanes sp. A, and are hypothesized to benefit from this association as a nursery or refugium from predation. Ninety-six percent (n = 574 of 599) of the juvenile N. diomedeae observed (density varied from 0.02–0.75/m2 among sites and seasons) in the study area were associated with Scotoplanes sp. A. Of the 2596 Scotoplanes sp. A observed (density varied from 0.48 to 25.90/m2), 22% were attended by at least one juvenile crab, and rarely two crabs (n = 4). Solitary N. diomedeae were rarely observed. This decapod–holothurian symbiosis appears to be largely commensal, with juvenile crabs (carapace width = 0.03–0.31 × holothurian length) observed on or beneath Scotoplanes sp. A in a habitat with few refugia from epibenthic predators. Other hypotheses may explain or enhance the potential benefits of the association for N. diomedeae, such as elevated food availability due to the activities of Scotoplanes sp. A. The relationship may be mutualistic if there is a benefit for the holothurian, including the removal of epizoic parasites. Ultimately, the nursery or other effects on the population dynamics of N. diomedeae may be minimal in low-relief, sediment-dominated habitats, as very few sub-adult crabs were observed in the study area and were likely consumed upon outgrowing their refugia. While sedimentary habitats may be a sink for N. diomedeae populations, growth of juvenile crabs during their association with Scotoplanes sp. A should increase energy flow to its predator populations. This association has not been reported previously but may be expected in sediment-dominated habitats where these species overlap.
5 citations
01 Jan 2017
TL;DR: In this paper, the authors propose a solution to solve the problem of the problem: this paper...,.. ].. ).. )... ;.
Abstract: ..................................................................................................................... v
4 citations
01 Jan 2002
TL;DR: In this paper, a coupled physical-biological model was developed to simulate physical, chemical and biological processes within the Monterey Bay National Marine Sanctuary (MBNMS) to better understand the central California coastal upwelling ecosystem.
Abstract: : To develop a coupled physical-biological model that can utilize available data to accurately simulate physical, chemical and biological processes within the Monterey Bay National Marine Sanctuary (MBNMS). To use the model to better understand the central California coastal upwelling ecosystem. To develop better methods for management and protection of the California coast ecosystem as a valuable natural resource. To better understand the physical and biogeochemical dynamics of the California coastal upwelling system and how it responds to changes in local and large-scale atmospheric forcing, and global change.
1 citations
Cited by
More filters
TL;DR: In this article, a global assessment of the effects of inorganic nitrogen pollution in aquatic ecosystems is presented, with detailed multi-scale data, and three major environmental problems: (1) increasing the concentration of hydrogen ions in freshwater ecosystems without much acid-neutralizing capacity, resulting in acidification of those systems; (2) stimulating or enhancing the development, maintenance and proliferation of primary producers, leading to eutrophication of aquatic ecosystems; (3) reaching toxic levels that impair the ability of aquatic animals to survive, grow and reproduce.
1,753 citations
TL;DR: The Effects of Harmful Algal Blooms on Aquatic Organisms: Vol. 10, No. 2, pp. 113-390 as mentioned in this paper was the first publication of this article.
Abstract: (2002). The Effects of Harmful Algal Blooms on Aquatic Organisms. Reviews in Fisheries Science: Vol. 10, No. 2, pp. 113-390.
1,242 citations
Woods Hole Oceanographic Institution1, North Carolina State University2, San Francisco State University3, University of Maryland Center for Environmental Science4, Stony Brook University5, Florida Fish and Wildlife Conservation Commission6, University of California, Santa Cruz7, Florida Gulf Coast University8, University of Maine9, National Oceanic and Atmospheric Administration10, University of South Florida11
TL;DR: In some regions of the U.S., the linkages between HABs and eutrophication are clear and well documented, whereas in others, information is limited, thereby highlighting important areas for further research.
567 citations
TL;DR: There is a rapidly advancing monitoring effort resulting from the perception of increased impacts from these HABs, manifested as expanding routine coastal monitoring programs, rapid development and deployment of new detection methods for individual species, toxins, and toxicities, and expansion of coastal modeling activities towards observational forecasts of bloom landfall and eventually bloom prediction.
Abstract: Blooms of autotrophic algae and some heterotrophic protists are increasingly frequent in coastal waters around the world and are collectively grouped as harmful algal blooms (HABs). Blooms of these organisms are attributed to two primary factors: natural processes such as circulation, upwelling relaxation, and river flow; and, anthropogenic loadings leading to eutrophication. Unfortunately, the latter is commonly assumed to be the primary cause of all blooms, which is not the case in many instances. Moreover, although it is generally acknowledged that occurrences of these phenomena are increasing throughout the world's oceans, the reasons for this apparent increase remain debated and include not only eutrophication but increased observation efforts in coastal zones of the world. There is a rapidly advancing monitoring effort resulting from the perception of increased impacts from these HABs, manifested as expanding routine coastal monitoring programs, rapid development and deployment of new detection methods for individual species, toxins, and toxicities, and expansion of coastal modeling activities towards observational forecasts of bloom landfall and eventually bloom prediction. Together, these many efforts will provide resource managers with the tools needed to develop effective strategies for the management and mitigation of HABs and their frequently devastating impacts on the coastal environment.
516 citations
TL;DR: The long-term consequences of climate change and potential environmental degradation are likely to include aspects of disease emergence in marine plants and animals, and the concept of marine sentinel organisms provides one approach to evaluating aquatic ecosystem health.
Abstract: The long-term consequences of climate change and potential environmental degradation are likely to include aspects of disease emergence in marine plants and animals. In turn, these emerging diseases may have epizootic potential, zoonotic implications, and a complex pathogenesis involving other cofactors such as anthropogenic contaminant burden, genetics, and immunologic dysfunction. The concept of marine sentinel organisms provides one approach to evaluating aquatic ecosystem health. Such sentinels are barometers for current or potential negative impacts on individual- and population-level animal health. In turn, using marine sentinels permits better characterization and management of impacts that ultimately affect animal and human health associated with the oceans. Marine mammals are prime sentinel species because many species have long life spans, are long-term coastal residents, feed at a high trophic level, and have unique fat stores that can serve as depots for anthropogenic toxins. Marine mammals may be exposed to environmental stressors such as chemical pollutants, harmful algal biotoxins, and emerging or resurging pathogens. Since many marine mammal species share the coastal environment with humans and consume the same food, they also may serve as effective sentinels for public health problems. Finally, marine mammals are charismatic megafauna that typically stimulate an exaggerated human behavioral response and are thus more likely to be observed.
471 citations