Anna Fricke

Anna Fricke
Leibniz-Institute of Vegetable and Ornamental Crops · Quality

Dr. rer. nat.

About

49
Publications
11,364
Reads
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487
Citations
Introduction
Fascinated by their diversity and potentials I worked over the past 15 years on different aspects of macroalgae. Due to my present position in the interdisciplinary project food4future I am addressing the challenge to promote and improve macroalgae as food source in Central Europe. My work not only comprises research on macroalgal cultivation and extraction, but also intend to create awareness and acceptance for macroalgal products in the society (https://www.food4future.de).
Additional affiliations
February 2021 - present
Eklipse
Position
  • Expert
Description
  • Macroalgae culture and ecosystem services
October 2019 - present
Leibniz-Institute of Vegetable and Ornamental Crops
Position
  • Researcher
Description
  • Researcher in the BMBF funded Project food4future, working on the development of landbased macroalgal cultivation for urban food production.
March 2018 - October 2019
Leibniz Centre for Tropical Marine Research (ZMT)
Position
  • PostDoc Position

Publications

Publications (49)
Article
Full-text available
Biogeochemical markers in combination with bacterial community composition were studied at two contrasting stations at the Río Negro (RN) estuary to assess the outwelling hypothesis in the Argentinian Patagonia. Inorganic nutrients and dissolved organic matter were exported clearly during the last hours of the ebb at the station Wetland. Moreover,...
Technical Report
Full-text available
Macroalgae (or seaweed) aquaculture can potentially provide many ecosystem services, including climate change mitigation, coastal protection, preservation of biodiversity and improvement of water quality. Nevertheless, there are still many constraints and knowledge gaps that need to be overcome, as well as potential negative impacts or scale-depend...
Article
Full-text available
Scaling agriculture to the globally rising population demands new approaches for future crop production such as multilayer and multitrophic indoor farming. Moreover, there is a current trend towards sustainable local solutions for aquaculture and saline agriculture. In this context, halophytes are becoming increasingly important for research and th...
Article
Full-text available
The co-occurrence of bacteria in sea grape (green caviar) Caulerpa lentillifera under two health state conditions was studied. The role of potentially detrimental and beneficial bacteria was discussed. A baseline for understanding the C. lentillifera holobiont was presented. Abstract The bacterial communities of Caulerpa lentillifera were studied...
Technical Report
Full-text available
1. Présence d’une micro-algue toxique sur la presqu’île de Dakar. 2. Cette micro-algue, relâche des toxines - analogues de la toxine palytoxine - qui ont des effets sur la santé humaine avec des symptômes variables qui peuvent s’apparenter à la grippe saisonnière. 3. Faible connaissance de cette toxine par les services de santé et de la médecine gé...
Preprint
Full-text available
The bacterial communities of the sea grape Caulerpa lentillifera were studied during a disease outbreak in Vietnam. The Rhodobacteraceae and Rhodovulum dominated the composition of healthy C. lentillifera . Clear differences between healthy and diseased cases were observed at order, genus and Operational Taxonomic Unit (OTU) level. Bacterial divers...
Article
Full-text available
Tropical coastal ecosystems provide a unique complex marine habitat with a high diversity of algal species, Vietnam being a particular hotspot. These algae may host a variety of potential unknown or underestimated bioactive algal compounds. In parallel the worldwide rising interest in macroalgae-based products lead to increasing activities in seawe...
Poster
The aim of the project is the development and optimisation of sustainable land-based macroalgae cultivation systems as well as research on nutritionally interesting cultivable species. Next to valuable proteins, different nutritionally interesting macroalgal metabolites, like carotenoids and fatty acids, shall be extracted and analyzed using UPLC-T...
Article
Harpacticoid copepods form a diverse and abundant group of the meiofauna in marine benthic habitats. Moreover, harpacticoids are frequently found in planktonic samples particularly in shallow and algae-covered coastal waters. Despite their high abundance, little is known about their taxonomy and importance as a component of the food web in the Sout...
Article
Toxic blooms of Ostreopsis spp. are greatly challenging to monitor due to the complexity and variability of cell repartition among benthic and pelagic compartments. This results in marked differences in employed meth-odologies for the survey of their dynamics and hampers the definition of the associated toxic risk. The present study aims at testing...
Article
This paper describes the adoption and validation of two innovative methods for the automated count of Ostreopsis spp. concentration in sea water: a molecular assay based on RT-qPCR and an opto-electronic device implementing automatic recognition algorithms. The proposed approaches were tested on samples coming from different locations along the Med...
Article
The global trend of unprecedented losses in coral reefs is particularly striking in the Caribbean, where dense algal assemblages are commonly replacing corals. So far, hardly anything is known about the ecology of the dominant algal groups. The present study compiled records of Chlorophytes from nine studies in the shallow reefs of Curaçao in the y...
Article
The present study shows the results of laboratory experiments addressing the effects of different water qualities on E. americana's fecundity and survival. The study was carried out with cultured females, incubated under different water qualities and controlled conditions during ten days (7 ± 2 �C, 14 h light, salinity of 32 ± 2, Tetraselmis sp. an...
Article
Abstract The tube dwelling diatom Berkeleya rutilans (Trentepohl) Grunow plays a key role as early colonizer and bloom former in coastal zones. Exuding large quantities of extracellular polymeric substances (EPS), it can form dense colonies in mucilaginous macroscopic branches, containing thousands of cells. Due to their pronounced three dimensiona...
Article
Full-text available
Chitin is one of the most abundant biopolymers in the planet. Chitin was quantified in seston fractions in order to obtain the first characterization of this polymer in the Bahía Blanca Estuary. Sampling was conducted at two sites: a non- impacted tidal channel -Bahía del Medio (BM)- and a sewage discharge sector -Canal Vieja (CV)-, during winter a...
Article
Despite the potential negative human health, ecological and economic impact, the ecology of harmful benthic dinoflagellate blooms remains largely unknown. This is probably due to the complex interactions among biotic and abiotic drivers that influence blooms, but also to the difficulty in quantifying cell abundance in a comparable way over large sp...
Article
Full-text available
Mesoalgae play a key role in shallow coastal ecosystems. Composed of small macroalgae, intermixed with filamentous cyanobacteria and colonial diatoms, these multi-specific, but minute (μm–cm) assemblages form complex three-dimensional structures, providing shelter for different unicellular (e.g. bacteria, diatoms, dinoflagellates) and multicellular...
Article
Full-text available
The most dramatic effects of global climate change are predicted for the Arctic, and there is a raising concern about the lack of baseline information on microalgal biodiversity. The present study was motivated by the general lack of information on species distribution of Arctic benthic diatoms and particularly studies providing photographs to faci...
Article
Full-text available
The ecology of the most relevant Vibrio species for human health and their relation to water quality and biogeochemistry were studied in two estuaries in Argentinian Patagonia. Vibrio cholerae and Vibrio parahaemolyticus were reported in > 29% of cases at the Río Colorado and Río Negro estuaries. Neither the pandemic serogroups of Vibrio cholerae O...
Conference Paper
Full-text available
The coast of San Antonio Bay (40° 43´ S, 64° 56´ W, Argentina) is an example of the changes that a coastal ecosystem may experience under high nutrient conditions. A paired channel system, with a channel close to the town of San Antonio Oeste (SAO-channel) with high nutrient loads/herbivory pressure conditions and a pristine channel (CONTROL-channe...
Conference Paper
Due to the emergent phenomenon of the toxic dinoflagellate Ostreopsis ovata, public awareness on benthic microalgae increased in the Mediterranean over the past decades. Forming dense blooms close to public beaches, this toxic species can affect human health by direct intoxications, e.g. over aerosols and skin contact. Leading to first incidents re...
Conference Paper
Full-text available
Due to the emergent phenomenon of the toxic dinoflagellate Ostreopsis ovata, public awareness on benthic microalgae increased in the Mediterranean over the past decades. Forming dense blooms close to public beaches, this toxic species can affect human health by direct intoxications, e.g. over aerosols and skin contact. Leading to first incidents re...
Conference Paper
Full-text available
En la Bahía San Antonio (40° 46´ S, 64° 54´ W) se ha venido observando un importante proceso de eutrofización producido por la filtración de efluentes domiciliarios. El objetivo de este trabajo fue evaluar las variaciones en la composición y biomasa de macroalgas en dos canales de la bahía, uno eutrofizado (SAO) y uno control (sin aportes externos)...
Article
Full-text available
Crustáceos da superordem Peracarida formam importantes aglomerados em habitats sedimentares. O anfípode Monocorophium insidiosum (CRAWFORD, 1937) e o tanaidáceo Tanais dulongii (AUDOUIN, 1926) são classificados como espécies invasoras. No presente estudo, investigamos a ecologia de M. insidiosum e de T. aff. dulongii na costa argentina. Cultivamos...
Conference Paper
Full-text available
Benthic harmful algae blooms are a topic of increasing public awareness in temperate areas. In the last decades, frequent blooms of the toxic dinoflagellate Ostreopsis cf. ovata caused public health issues and highlighted the need of a better knowledge on seasonal dynamics and environmental drivers. This is one of the main goals of the M3HABs proje...
Conference Paper
Full-text available
Over the past decades Harmful Algal Blooms have increased worldwide, with an increase in number of affected areas. Over the past decade the dinoflagellate Ostreopsis cf. ovata came in the focus of the Mediterranean marine research. Forming dense blooms close to urban structures this toxic species increased the public awareness and reveal the need f...
Article
Full-text available
Eutrophication plays a crucial role in coastal systems, driving changes in the composition and abundance of flora and fauna with consequent effects for the entire ecosystem. Sensitive to nutrient levels, micro- and macroalgal blooms serve as valuable indicators of eutrophication. The San Antonio Bay (Northern Argentinean Patagonia, 40° 43′ S, 64° 5...
Article
Full-text available
Eutrophication plays a crucial role in coastal systems, driving changes in the composition and abundance of flora and fauna with consequent effects for the entire ecosystem. Sensitive to nutrient levels, micro- and macroalgal blooms serve as valuable indicators of eutrophication. The San Antonio Bay (Northern Argentinean Patagonia, 40° 43′ S, 64° 5...
Article
Full-text available
Plankton fractions from a saline lake in Argentina were studied using a combined trophic marker approach. A strong seasonality of biomarkers was characteristic for the different fractions, particularly the variations in the 18:4(n − 3) and 20:4(n − 3) fatty acids and the δ13C values. The primary production in the lake was mainly driven by diatoms,...
Conference Paper
Full-text available
The pan-Mediterranean project M3-HABs regarding monitoring of harmful algal blooms, with particular reference to the benthic dinoflagellate Ostreopsis, started in 2014 in the framework of the ENPI-CBCMED Programme. The specific objective of the project is to provide a common strategy for monitoring benthic toxic microalgae, through the development...
Article
Full-text available
Fleshy macroalgae are becoming a dominant benthic component on Caribbean coral reefs, with increased abundance and frequency across all reef zones. Over the past two decades, the brown alga Lobophora variegata has proliferated on shallow and deep reefs in Curaçao, former Netherlands Antilles. This alga provides a living substrate for a diverse epip...
Article
Calcifying green macroalgae of the genus Halimeda are widely distributed on coral reefs and may become more abundant under higher nutrient availability. To determine how nutrient enrichment affects the physiological performance of Halimeda opuntia (Linnaeus) J.V.Lamouroux in relation to different water depths, we carried out in situ nutrient enrich...
Conference Paper
Full-text available
Overall the epiphytic community needs further research as they will spread conform with their hosts over the reefs in future. Macroalgae are becoming a dominant benthic component on Caribbean coral reefs, with increased abundance and frequency across all reef zones. Over the past two decades, different macroalgae like Lobophora variegata (Lamouroux...
Article
Full-text available
Lobophora variegata is a dominant macroalga on coral reefs across the Caribbean. Over the last two decades, it has expanded its vertical distribution to both shallow and deep reefs along the leeward coast of the island of Curaçao, Southern Caribbean. However, the ecological implications of this expansion and the role of L. variegata as a living sub...
Article
Full-text available
At present, information on the effects of ultraviolet radiation (UVR) on structure and diversity of polar, in particular Arctic, benthic communities is scarce. It is unclear whether and to what extent communities of different successional age are susceptible to UVR and whether UVR effects known to be detrimental at the species level can be buffered...
Article
Full-text available
Over the past three decades, Caribbean coral reefs have drastically changed in structure and organization due to anthropogenically driven environmental changes. The prognostic trend indicates a shift from coral-to more algal-dominated reefs coupled with a loss in biodiversity and destabilization of reef structure. This study focuses on the composit...
Article
In scope of worldwide reef degradation due to anthropogenic environmental changes there is an urgent need to understand the different factors driving the processes within the coral reef ecosystem. Thus, the investigation of macroalgae becomes important, as they are observed to spread over the degraded reefs. Next to some conspicuous species, like L...
Article
Full-text available
Information on succession in marine benthic primary producers in polar regions is very scarce, particularly with regard to effects of abiotic and biotic drivers of community structure. Primary succession begins with rapid colonizers, such as diatoms and ephemeral macroalgae, whereas slow, highly seasonal recruitment and growth are characteristic of...
Article
Full-text available
Information on succession in marine benthic primary producers in polar regions is very scarce, particularly with regard to effects of abiotic and biotic drivers of community structure. Primary succession begins with rapid colonizers, such as diatoms and ephemeral macroalgae, whereas slow, highly seasonal recruitment and growth are characteristic of...
Article
Full-text available
In the current study, we investigated the primary succession of seaweeds over different time periods at different water depths. Furthermore, we followed the succession of field-grown benthic communities of different successional age, developing on ceramic tiles, prior to and after transplantation from 8 to 0.5m water depth. The transplantation simu...
Article
Full-text available
Mega-epibenthic diversity was analysed using a seabed photography at four stations off Bouvet Island and one station at the Spiess Seamount in the South Atlantic. Surprisingly, the intermediate-scale diversity within the area of investigation was not lower compared to that on the Patagonian shelf and only moderately lower than that on the Antarctic...
Data
Mega-epibenthic diversity was analysed using a seabed photography at four stations off Bouvet Island and one station at the Spiess Seamount in the South Atlantic. Surprisingly, the intermediate-scale diversity within the area of investigation was not lower compared to that on the Patagonian shelf and only moderately lower than that on the Antarctic...

Questions

Question (1)
Question
Dear colleagues,
I am currently looking for databases compiling information on macroalgal bioactive compounds (analyzed by e.g. HRMS, UPLC). So far I am aware of SWMD (http://www.swmd.co.in/), but are there any more out there?
Thank you in advance for your support!
Greetings and best
Anna

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Projects

Projects (4)
Project
aims at seaweed habitats and their potential to foster blue growth and to enhance biodiversity and ecosystem services in Senegal and neighbouring countries. The project will provide a road map to policy makers to encourage both exploitation (cultivation and harvest) of seaweed and preservation of natural seaweeds habitats as a tool for fisheries management and as refuge and habitat for exploited fish. Seaweed aquaculture cannot only be a profitable and sustainable source of income, but also a tool for carbon fixation and for nutrient recovery from over-fertilized coastal waters. Natural and sustainably harvested and cultivated seaweed habitats can stabilize, conserve and restore marine biodiversity and ecosystem services.
Project
F4F consists of four inter- and intra-active research fields (FF): FF I: Organisms, FF II: Urban Bio-Spheres, FF III: Smart Nutrition & Sensor Technology and FF IV: Social Science Analysis. F4F works in individual projects, which are networked in the context of the four food projects "Today's Food", "Designed Food", "Natural Food" and "Future Food" as well as with the four thematic research fields. In FF I, saline production systems for terrestrial and marine organisms (macroalgae, medusae, halophytes, insects) are developed in singular cultivation as well as in an interacting combination of organisms as single- or multi-compound raw material sources in urban biospheres. Using the targeted key technologies (UV) LED technology and composite lightweight materials, within ATB's project "production of crickets " innovation approaches are being developed from Proof of Principle as Lab Versions to the Proof of Concept with demonstrators for "Designed Food" and "Natural Food".