Henrik Oksfeldt Enevoldsen

Henrik Oksfeldt Enevoldsen
University of Copenhagen · IOC Science and Communication Centre

About

26
Publications
25,283
Reads
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1,409
Citations
Citations since 2017
17 Research Items
1015 Citations
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2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300

Publications

Publications (26)
Conference Paper
The Global Harmful Algal Blooms (GlobalHAB, www.global hab.info) Program is aimed at fostering international cooperative research directed toward improving the prediction of harmful algal bloom (HAB) events in aquatic ecosystems, and providing sound knowledge for policy- and decision-making to manage and mitigate HAB impacts in a changing planet. G...
Article
Full-text available
Global trends in the occurrence, toxicity and risk posed by harmful algal blooms to natural systems, human health and coastal economies are poorly constrained, but are widely thought to be increasing due to climate change and nutrient pollution. Here, we conduct a statistical analysis on a global dataset extracted from the Harmful Algae Event Datab...
Article
The IOC-ICES-PICES Harmful Algal Event Database (HAEDAT) was used to describe the diversity and spatiotemporal distribution of harmful algal events along the Atlantic margin of Europe from 1987 - 2018. The majority of events recorded are caused by Diarrhetic Shellfish Toxins (DSTs). These events are recorded annually over a wide geographic area fro...
Article
Harmful Algae Blooms (HAB) have been documented for at least fifty years in Latin America and the Caribbean (LAC), however, their impacts at social, ecological and economic levels are still little known. To contribute to the impact assessment of HABs in LAC region, the available information in HAEDAT, OBIS, CAREC, and CARPHA databases, and scientif...
Preprint
Full-text available
Abstract Historically, species in the genus Gambierdiscus Adachi & Fukuyo were viewed as pantropical organisms distributed between 35°N and 34°S and ubiquitous throughout the Caribbean, the Hawaiian Islands, French Polynesia, Australia and the Indian Ocean. Between 2016 and 2017 four new species were added to the genus Gambierdiscus from the South...
Article
Full-text available
Our civilization needs a clean, resilient, productive, safe, well-observed, documented and predicted ocean. “The ocean we need for the future we want” was the motto of the Intergovernmental Oceanographic Commission proposal to the United Nations to consider the merit of an Ocean Science Decade. By proclaiming the Decade, the UN General Assembly off...
Poster
Full-text available
Marine phytoplankton represents an important role in the ecosystem because it is the basis of a large part of trophic networks, producing oxygen and fixing carbon, but its massive growth and the production of toxins can generate negative impacts. These natural events are internationally known as Harmful Algal Blooms (HAB), which can deteriorate wat...
Chapter
The Global Ecology and Oceanography of Harmful Algal Blooms (GEOHAB) Programme was established in 2001 under the sponsorship of the Intergovernmental Oceanographic Commission (IOC) of UNESCO and the Scientific Committee on Oceanic Research (SCOR). GEOHAB was the first international research programme focusing exclusively on harmful marine algae. Th...
Chapter
GlobalHAB, “Global Harmful Algal Blooms,” is a new scientific programme on harmful algal blooms (HABs) cosponsored by the Intergovernmental Oceanographic Commission (IOC) of UNESCO and the Scientific Committee on Oceanic Research (SCOR) that will operate for 10 years from 2016 to 2025. GlobalHAB builds on the solid foundation established by the for...
Chapter
Full-text available
Recognition of the threats to biodiversity and its importance to society has led to calls for globally coordinated sampling of trends in marine ecosystems. As a step to defining such efforts, we review current methods of collecting and managing marine biodiversity data. A fundamental component of marine biodiversity is knowing what, where, and when...
Article
Full-text available
From 25 to 28 September 2017 sixteen HAB experts from 13 countries gathered at the headquarters of the IOC IODE (International Oceanographic Data Exchange) Programme Office in Oostende, Belgium (see group picture in the back page), to receive training in data entry into the Ocean Biogeographic Information System (OBIS; http://www.iobis.org) and the...
Conference Paper
Full-text available
Ciguatera has been an ongoing threat in many countries throughout tropical and subtropical regions, particularly in small island developing states heavily dependent on fish for protein. With the development of tourism and global seafood trade, the risk of ciguatera has expanded to countries outside naturally affected areas, having consequences for...
Article
Microalgal blooms are a natural part of the seasonal cycle of photosynthetic organisms in marine ecosystems. They are key components of the structure and dynamics of the oceans and thus sustain the benefits that humans obtain from these aquatic environments. However, some microalgal blooms can cause harm to humans and other organisms. These harmful...
Article
Full-text available
Harmful events caused by benthic microalgae have recently garnered a high level of attention in temperate areas, upon reports of Ostreopsis species causing fauna damage, food intoxication and respiratory illness. A resurgence of interest has also occurred in ciguatera fish poisoning (CFP), a syndrome associated with the consumption of reef fish con...
Article
Full-text available
Harmful algal blooms (HABs) have become an important subdiscipline within oceanography. Heightened attention to this topic as well as significant research advances reflect the global nature of the problem and the development of strong national and international programs for HAB research and management. The planning, communications, coordination, an...
Article
The effects of flow velocities on dark respiration and net photosynthesis of eight submerged stream macrophytes were examined in a laboratory oxygen chamber. The shoots/leaves were exposed to saturating free-CO2 concentrations and were attached basally so that they could move in the flowing water. Net photosynthesis declined by 34–61% as flow veloc...
Article
A broad spectrum of events come under the category of harmful algal blooms (HABs), the common denominator being a negative impact on human activities. Harmful algal blooms involve a wide diversity of organisms, bloom dynamics, and mechanisms of impact. Here we review the effects of natural and man-induced environmental fluctuations on the frequency...

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