Workgroup Aquatic Chemical Ecology

Dr. Patrick Fink

office 0.309, internal phone: 6637

Research Interests

Aquatic chemical ecology
Molecular ecology
Algae-herbivore interactions
Biodiversity
Climate change
Food quality
Essential biochemicals
Polyunsaturated fatty acids
Stable isotopes in ecology
Ecological stoichiometry
Maternal effects
Freshwater molluscs
Biogenic volatile organic compounds
Chemical communication / infochemicals
Inducible and activated defences

Research Interests

Current Research Activities

Earlier Studies

Selected Publications

Follow my research on ResearchGate

Current research activities

Interactions between consumer and resource diversity

There has been a long debate whether producer diversity is controlled by the presence of consumers (top-down regulation) or by the availability of resources (bottom-up regulation). A yet overlooked steering factor might be the effects of the consumer species diversity on the species diversity of a prey community. Potentially complex interactions between consumers and other environmental factors on the prey community can be easily investigated using periphyton as resource community and freshwater benthic invertebrates as consumers.
(Collaboration with Dr. Maria Kahlert from the Swedish University of Agricultural Sciences)

Volatile foraging kairomones in benthic snail-periphyton interactions

Volatile organic compounds (VOCs) can serve as important infochemicals in biofilms of benthic primary producers: VOCs released from both a benthic, mat-forming, green alga (Ulothrix fimbriata) and from freshwater diatoms (Achnanthes biasolettiana) function as food-finding cues that attract herbivorous freshwater snails (Radix ovata). This suggests that VOCs can play a steering role as infochemicals in freshwater benthic habitats, as has been established for many organismic interactions in terrestrial ecosystems.

Impacts of algal food quality on Daphnia

In recent years it has been acknowledged that the food quality of freshwater microalgae for herbivorous zooplankton is not only determined by the algae's content of mineral nutrients such as phosphorus, but also by the algae's biochemical composition. In particular, the availability of particular highly unsaturated fatty acids seems to be an important determinant of algal food quality for Daphnia sp.
In the current project, I investigate the effects of different polyunsaturated fatty acids supplied with the algal diet to Daphnia sp. on the fitness of these zooplankton herbivores in laboratory experiments.

Adaptations of herbivores to stoichiometric food quality constraints

When faced with a low quality resource (e.g, a stoichiometrically imbalanced diet), consumers utilize different mechanisms to cope with a highly phosphorus- and/or nitrogen-depleted resource. In earlier work (see below), we found that freshwater gastropods increase the nutrient retention during gut passage, i.e., they excrete faecal pellets that are even more depleted in the limiting nutrient than the resource and the consumers' body tissue. Furthermore, the snails are increasing their biomass-specific consumption rates (on a diet low in essential compounds) in order to increase the uptake of the limiting nutrient(s). Currently, I investigate these and other mechanisms of herbivores to adapt to spatially and temporally fluctuating resource nutrient contents.

The ecological function of volatile aldehydes (oxylipins) in freshwater benthic ecosystems

Volatile aldehydes (or oxylipins) released from damaged diatom cells have been shown to dramatically lower the hatching success of herbivorous copepods and therefore are considered to form an activated defence strategy of the diatoms versus herbivores. Alternatively, such substances might also serve as infochemicals, especially in biofilms of benthic algae and cyanobacteria. In this project, I investigate the interactions between oxylipins released by benthic diatoms and green algae and herbivorous gastropod grazers.

Ecology of the invasive mysid shrimp Limnomysis benedeni

As most other freshwater invasive species in Europe, the mysid Limnomysis benedeni originates in the ponto-caspian region. Recently, it has rapidly spread out through the large European river systems and adjacent lakes. Despite this rapid spread of L. benedeni in Europe during the last years, there is only very little knowledge about the potential consequences of the invasion of this species on the native ecosystems. Without knowledge on the behaviour and feeding strategies of L. benedeni, its impact on native species can not be estimated. Therefore, I investigate the feeding ecology of L. benedeni in the bayous of the Lower Rhine, where this species has recently invaded and since developed mass abundances.

[TOP]

Earlier Studies

Food quality and food choice in freshwater gastropods

As biofilm grazers, gastropods have considerable impact on the productivity and community structure of benthic ecosystems in many limnetic and marine systems. Compared to other littoral invertebrates, gastropods are relatively large grazers and therefore able to cause large predation pressure on the biofilm community even at low densities. In Lake Constance, snails (mostly the genera Radix and Bithynia) are very abundant and can therefore be considered as one of the key components of the littoral food web. The project addressed the following main questions:

I. Do food quality differences of photosynthetic primary producers known from planktivore grazers like Daphnia, exist also for freshwater gastropods?
II. What are the biochemical constraints of food quality for these organisms?
III. Are there food preferences in those freshwater snails?

Utilisation and cycling of essential fatty acids in an integrated marine aquaculture system

In an integrated aquaculture system, nutrient extracting species are cultivated alongside species which cause local nutrient enrichment, such as fish. Therefore, nutrients can be recycled within the system. During aquaculture of fish, both particulate and dissolved excreta have to be utilised. We investigate, how essential polyunsaturated fatty acids cycle through such an aquaculture system in which polychaete worms feed on seabream faeces.

Incucible defences in eucaryotic microalgae

The common green algal genus Scenedesmus shows an extremely high degree of phenotypic plasticity. In the presence of herbivorous zooplankton, these naturally unicellular microalgae form colonies that are too large to be ingested by small herbivores. Thus, this strategy can be considered as an effective inducible defense for these microalgae. However, the chemical structure of the kairomone, which is released by the zooplankton and induces the formation of colonies in the algae is not yet known. In this project, I purified this kairomone from water that had been incubated with herbivorous zooplankton and experimentally tested further ideas on the chemical identity and release of this infochemical.

Molecular taxonomy of freshwater microalgae
(in cooperation with Dr. Erik van Hannen, Netherlands Institute for Ecology, and Dr. Miquel Lürling, Wageningen Agricultural University, The Netherlands)
As mentioned above, the green algal genus Scenedesmus shows high phenotypic plasticity in response to environmental conditions. Unfortunately, taxonomic ordering of the Scenedesmaceae has so far been largely dependent only on morphological characteristics. As a consequence, many morphotypes of strains of Scenedesmus have been classified as independent species dependent on the morphology of the cells and colonies. This led to the description of a total of over 1300 species and subspecies in the genus Scenedesmus, of which probably only a fraction are valid species. In this project, I attempted to resolve the chaotic taxonomic situation in the Scenedemaceae with the aid of molecular methods. The ITS2 region of the ribosomal DNA of 34 strains of Scenedesmus was sequenced and the sequences were aligned based on a secondary structure model of the ITS2-RNA. This allowed for the distinction between several clusters and supported the current division of the former genus Scenedesmus into the genera Scenedesmus and Desmodesmus.

[TOP]

Publications

Contact me for reprints (replace "[at]" by "@").

peer-reviewed (DOIs link to publishers' sites)

Patrick Fink & Chris Harrod (2013) Carbon and nitrogen stable isotopes reveal use of pelagic resources by the invasive Ponto-Caspian Mysid Limnomysis benedeni. Isotopes in Environmental and Health Studies (in press).

Patrick Fink (2013) Invasion of quality: High amounts of essential fatty acids in the invasive Ponto-Caspian mysid Limnomysis benedeni. Journal of Plankton Research 35 (4): 907-913.
DOI: 10.1093/plankt/fbt029

Patrick Fink, Elke S. Reichwaldt, Chris Harrod & Axel Rossberg (2012) Determining trophic niche width: An experimental test of the stable isotope approach. Oikos 121 (12): 1985–1994.
DOI: 10.1111/j.1600-0706.2012.20185.x

Simon von Berlepsch, Hans-Henning Kunz, Susanne Brodesser, Patrick Fink, Kay Marin, Ulf-Ingo Flügge & Markus Gierth (2012) The acyl-acyl carrier protein synthetase from Synechocystis sp. PCC6803 mediates fatty acid import. Plant Physiology 159 (2): 606-617 .
DOI: 10.1104/pp.112.195263

Franja Pajk, Eric von Elert & Patrick Fink (2012) Interaction of changes in food quality and temperature reveals maternal effects on fitness parameters of a keystone aquatic herbivore. Limnology & Oceanography 57 (1): 281-292.
DOI: 10.4319/lo.2012.57.1.0281

Patrick Fink, Anke Kottsieper, Martina Heynen & Jost Borcherding (2012) Selective zooplanktivory of an invasive Ponto-Caspian mysid and possible consequences for the zooplankton community structure of invaded habitats. Aquatic Sciences 74: 191-202.
DOI: 10.1007/s00027-011-0210-y

Adrian A. Bischoff et al. (2012) Waste reduction in aquaculture by culturing detritivorous organisms: Small steps towards sustainable aquaculture practices. Südwestdeutscher Verlag für Hochschulschriften 172 pp. ISBN 3-8381-3274-2.
Order a copy at the publisher's website.

Peter Deines & Patrick Fink (2011) The potential of methanotrophic bacteria to compensate for food quantity or food quality limitations in Daphnia. Aquatic Microbial Ecology 65 (2) 197-206.
DOI: 10.3354/ame01542

Patrick Fink, Claudia Pflitsch, & Kay Marin (2011) Dietary essential amino acids affect the reproduction of the keystone herbivore Daphnia pulex. PLoS ONE 6 (12): e28498.
DOI: 10.1371/journal.pone.0028498

Jonas Persson*, Patrick Fink*, Akira Goto*, James M. Hood*, Jayne Jonas* & Satoshi Kato* (2010) To be or not to be what you eat: Regulation of stoichiometric homeostasis among autotrophs and heterotrophs. Oikos 119 (5):741-751 (* all authors contributed equally).
DOI: 10.1111/j.1600-0706.2010.18545.x

Adrian A. Bischoff, Patrick Fink & Uwe Waller (2009) The fatty acid composition of Nereis diversicolor cultured in an integrated recirculated system: possible implications for aquaculture. Aquaculture 296: 271-276.
DOI: 10.1016/j.aquaculture.2009.09.002

Patrick Fink (2008). Algal food quality affects growth of a benthic herbivore. Verhandlungen der Internationalen Vereinigung für theoretische und angewandte Limnologie (SIL) 30 (4): 531-533.

Patrick Fink (2007). Ecological functions of volatile organic compounds in aquatic systems. Marine and Freshwater Behaviour and Physiology 40 (3): 155-168.
DOI: 10.1080/10236240701602218
(among the 20 most read articles of Mar. Freshw. Behav. Physiol., see the journal's website!)

György Abrusan, Patrick Fink and Winfried Lampert (2007). Biochemical limitation of resting egg production in Daphnia. Limnology and Oceanography 52 (4) : 1724-1728.
DOI: 10.4319/lo.2007.52.4.1724

Patrick Fink and Eric von Elert (2006). Physiological responses to stoichiometric constraints: nutrient limitation and compensatory feeding in a freshwater snail. Oikos 115 (3): 484-494.
DOI: 10.1111/j.2006.0030-1299.14951.x

Patrick Fink, Eric von Elert and Friedrich Jüttner (2006). Oxylipins from freshwater diatoms act as attractants for a benthic herbivore. Archiv für Hydrobiologie 167 (1-4): 561-574.
DOI: 10.1127/0003-9136/2006/0167-0561

Patrick Fink, Eric von Elert and Friedrich Jüttner (2006). Volatile foraging kairomones in the littoral zone: attraction of an herbivorous freshwater gastropod to algal odors. Journal of Chemical Ecology 32 (9): 1867-1881.
DOI: 10.1007/s10886-006-9115-y

Patrick Fink, Lars Peters and Eric von Elert (2006). Stoichiometric mismatch between littoral invertebrates and their periphyton food. Archiv für Hydrobiologie 165 (2): 145-165.
DOI: 10.1127/0003-9136/2006/0165-0145

Patrick Fink and Eric von Elert (2006). Food quality of algae and cyanobacteria for the freshwater gastropod Bithynia tentaculata: the role of polyunsaturated fatty acids. Verhandlungen der internationalen Vereinigung für theoretische und angewandte Limnologie (SIL) 29 (3): 1235-1240.

Patrick Fink (2006) Food quality and food choice in freshwater gastropods: Field and laboratory investigations on a key component of littoral food webs. Logos Verlag, Berlin 133 pp. ISBN 3-8325-1203-9.
Order a copy at the publisher's website.

Erik J. Van Hannen, Patrick Fink and Miquel Lürling (2002). A revised secondary structure model for the internal transcribed spacer 2 of the green algae Scenedesmus and Desmodesmus and its implications for the phylogeny of these algae. European Journal of Phycology 37 (2): 203-208.
DOI: 10.1017/S096702620200361X

conference proceedings (in German)

Patrick Fink (2008). Schlechte Futterqualität und wie man damit umgehen kann: die Ernährungsökologie einer Süßwasserschnecke. Tagungsbericht, Deutsche Gesellschaft für Limnologie (DGL) - Jahrestagung 2007 (Münster): 2-6.

Patrick Fink und Eric Von Elert (2006). Das C:N:P-Verhältnis von Periphyton und seine ökologische Relevanz für herbivore Makroinvertebraten. Tagungsbericht, Deutsche Gesellschaft für Limnologie (DGL) - Jahrestagung 2005 (Karlsruhe): 308-311.

Patrick Fink und Eric Von Elert (2004). Freisetzung flüchtiger organischer Verbindungen aus benthischen Süßwasseralgen durch weidende Schnecken. Tagungsbericht, Deutsche Gesellschaft für Limnologie (DGL) - Jahrestagung 2003 (Köln): 569-573.

Patrick Fink und Eric Von Elert (2003). Chemosensorische Futterwahl limnischer Gastropoden. Tagungsbericht, Deutsche Gesellschaft für Limnologie (DGL) - Jahrestagung 2002 (Braunschweig): 329-333.

Patrick Fink und Eric Von Elert (2002). Daphnia-induzierte Coenobienbildung bei Scenedesmus obliquus - chemische Charakterisierung des Kairomons. Tagungsbericht, Deutsche Gesellschaft für Limnologie (DGL) - Jahrestagung 2001 (Kiel): 579-584.

Contact me for reprints (replace "[at]" by "@").

More Info on my research on ResearchGate.net or Academia.edu and my private website

[TOP]

Dr. Patrick Fink
office 0.309, internal phone: 6637
	Research Interests Aquatic chemical ecology Molecular ecology Algae-herbivore interactions Biodiversity Climate change Food quality Essential biochemicals Polyunsaturated fatty acids Stable isotopes in ecology Ecological stoichiometry Maternal effects Freshwater molluscs Biogenic volatile organic compounds Chemical communication / infochemicals Inducible and activated defences	Research Interests Current Research Activities Earlier Studies Selected Publications

Follow my research on ResearchGate

Current research activities Interactions between consumer and resource diversity There has been a long debate whether producer diversity is controlled by the presence of consumers (top-down regulation) or by the availability of resources (bottom-up regulation). A yet overlooked steering factor might be the effects of the consumer species diversity on the species diversity of a prey community. Potentially complex interactions between consumers and other environmental factors on the prey community can be easily investigated using periphyton as resource community and freshwater benthic invertebrates as consumers. (Collaboration with Dr. Maria Kahlert from the Swedish University of Agricultural Sciences) Volatile foraging kairomones in benthic snail-periphyton interactions Volatile organic compounds (VOCs) can serve as important infochemicals in biofilms of benthic primary producers: VOCs released from both a benthic, mat-forming, green alga (Ulothrix fimbriata) and from freshwater diatoms (Achnanthes biasolettiana) function as food-finding cues that attract herbivorous freshwater snails (Radix ovata). This suggests that VOCs can play a steering role as infochemicals in freshwater benthic habitats, as has been established for many organismic interactions in terrestrial ecosystems. Impacts of algal food quality on Daphnia In recent years it has been acknowledged that the food quality of freshwater microalgae for herbivorous zooplankton is not only determined by the algae's content of mineral nutrients such as phosphorus, but also by the algae's biochemical composition. In particular, the availability of particular highly unsaturated fatty acids seems to be an important determinant of algal food quality for Daphnia sp. In the current project, I investigate the effects of different polyunsaturated fatty acids supplied with the algal diet to Daphnia sp. on the fitness of these zooplankton herbivores in laboratory experiments. Adaptations of herbivores to stoichiometric food quality constraints When faced with a low quality resource (e.g, a stoichiometrically imbalanced diet), consumers utilize different mechanisms to cope with a highly phosphorus- and/or nitrogen-depleted resource. In earlier work (see below), we found that freshwater gastropods increase the nutrient retention during gut passage, i.e., they excrete faecal pellets that are even more depleted in the limiting nutrient than the resource and the consumers' body tissue. Furthermore, the snails are increasing their biomass-specific consumption rates (on a diet low in essential compounds) in order to increase the uptake of the limiting nutrient(s). Currently, I investigate these and other mechanisms of herbivores to adapt to spatially and temporally fluctuating resource nutrient contents. The ecological function of volatile aldehydes (oxylipins) in freshwater benthic ecosystems Volatile aldehydes (or oxylipins) released from damaged diatom cells have been shown to dramatically lower the hatching success of herbivorous copepods and therefore are considered to form an activated defence strategy of the diatoms versus herbivores. Alternatively, such substances might also serve as infochemicals, especially in biofilms of benthic algae and cyanobacteria. In this project, I investigate the interactions between oxylipins released by benthic diatoms and green algae and herbivorous gastropod grazers. Ecology of the invasive mysid shrimp Limnomysis benedeni As most other freshwater invasive species in Europe, the mysid Limnomysis benedeni originates in the ponto-caspian region. Recently, it has rapidly spread out through the large European river systems and adjacent lakes. Despite this rapid spread of L. benedeni in Europe during the last years, there is only very little knowledge about the potential consequences of the invasion of this species on the native ecosystems. Without knowledge on the behaviour and feeding strategies of L. benedeni, its impact on native species can not be estimated. Therefore, I investigate the feeding ecology of L. benedeni in the bayous of the Lower Rhine, where this species has recently invaded and since developed mass abundances. [TOP] Earlier Studies Food quality and food choice in freshwater gastropods As biofilm grazers, gastropods have considerable impact on the productivity and community structure of benthic ecosystems in many limnetic and marine systems. Compared to other littoral invertebrates, gastropods are relatively large grazers and therefore able to cause large predation pressure on the biofilm community even at low densities. In Lake Constance, snails (mostly the genera Radix and Bithynia) are very abundant and can therefore be considered as one of the key components of the littoral food web. The project addressed the following main questions: I. Do food quality differences of photosynthetic primary producers known from planktivore grazers like Daphnia, exist also for freshwater gastropods? II. What are the biochemical constraints of food quality for these organisms? III. Are there food preferences in those freshwater snails? Utilisation and cycling of essential fatty acids in an integrated marine aquaculture system In an integrated aquaculture system, nutrient extracting species are cultivated alongside species which cause local nutrient enrichment, such as fish. Therefore, nutrients can be recycled within the system. During aquaculture of fish, both particulate and dissolved excreta have to be utilised. We investigate, how essential polyunsaturated fatty acids cycle through such an aquaculture system in which polychaete worms feed on seabream faeces. Incucible defences in eucaryotic microalgae The common green algal genus Scenedesmus shows an extremely high degree of phenotypic plasticity. In the presence of herbivorous zooplankton, these naturally unicellular microalgae form colonies that are too large to be ingested by small herbivores. Thus, this strategy can be considered as an effective inducible defense for these microalgae. However, the chemical structure of the kairomone, which is released by the zooplankton and induces the formation of colonies in the algae is not yet known. In this project, I purified this kairomone from water that had been incubated with herbivorous zooplankton and experimentally tested further ideas on the chemical identity and release of this infochemical. Molecular taxonomy of freshwater microalgae (in cooperation with Dr. Erik van Hannen, Netherlands Institute for Ecology, and Dr. Miquel Lürling, Wageningen Agricultural University, The Netherlands) As mentioned above, the green algal genus Scenedesmus shows high phenotypic plasticity in response to environmental conditions. Unfortunately, taxonomic ordering of the Scenedesmaceae has so far been largely dependent only on morphological characteristics. As a consequence, many morphotypes of strains of Scenedesmus have been classified as independent species dependent on the morphology of the cells and colonies. This led to the description of a total of over 1300 species and subspecies in the genus Scenedesmus, of which probably only a fraction are valid species. In this project, I attempted to resolve the chaotic taxonomic situation in the Scenedemaceae with the aid of molecular methods. The ITS2 region of the ribosomal DNA of 34 strains of Scenedesmus was sequenced and the sequences were aligned based on a secondary structure model of the ITS2-RNA. This allowed for the distinction between several clusters and supported the current division of the former genus Scenedesmus into the genera Scenedesmus and Desmodesmus. [TOP] Publications Contact me for reprints (replace "[at]" by "@"). peer-reviewed (DOIs link to publishers' sites) Patrick Fink & Chris Harrod (2013) Carbon and nitrogen stable isotopes reveal use of pelagic resources by the invasive Ponto-Caspian Mysid Limnomysis benedeni. Isotopes in Environmental and Health Studies (in press). Patrick Fink (2013) Invasion of quality: High amounts of essential fatty acids in the invasive Ponto-Caspian mysid Limnomysis benedeni. Journal of Plankton Research 35 (4): 907-913. DOI: 10.1093/plankt/fbt029 Patrick Fink, Elke S. Reichwaldt, Chris Harrod & Axel Rossberg (2012) Determining trophic niche width: An experimental test of the stable isotope approach. Oikos 121 (12): 1985–1994. DOI: 10.1111/j.1600-0706.2012.20185.x Simon von Berlepsch, Hans-Henning Kunz, Susanne Brodesser, Patrick Fink, Kay Marin, Ulf-Ingo Flügge & Markus Gierth (2012) The acyl-acyl carrier protein synthetase from Synechocystis sp. PCC6803 mediates fatty acid import. Plant Physiology 159 (2): 606-617 . DOI: 10.1104/pp.112.195263 Franja Pajk, Eric von Elert & Patrick Fink (2012) Interaction of changes in food quality and temperature reveals maternal effects on fitness parameters of a keystone aquatic herbivore. Limnology & Oceanography 57 (1): 281-292. DOI: 10.4319/lo.2012.57.1.0281 Patrick Fink, Anke Kottsieper, Martina Heynen & Jost Borcherding (2012) Selective zooplanktivory of an invasive Ponto-Caspian mysid and possible consequences for the zooplankton community structure of invaded habitats. Aquatic Sciences 74: 191-202. DOI: 10.1007/s00027-011-0210-y Adrian A. Bischoff et al. (2012) Waste reduction in aquaculture by culturing detritivorous organisms: Small steps towards sustainable aquaculture practices. Südwestdeutscher Verlag für Hochschulschriften 172 pp. ISBN 3-8381-3274-2. Order a copy at the publisher's website. Peter Deines & Patrick Fink (2011) The potential of methanotrophic bacteria to compensate for food quantity or food quality limitations in Daphnia. Aquatic Microbial Ecology 65 (2) 197-206. DOI: 10.3354/ame01542 Patrick Fink, Claudia Pflitsch, & Kay Marin (2011) Dietary essential amino acids affect the reproduction of the keystone herbivore Daphnia pulex. PLoS ONE 6 (12): e28498. DOI: 10.1371/journal.pone.0028498 Jonas Persson, Patrick Fink, Akira Goto, James M. Hood, Jayne Jonas* & Satoshi Kato* (2010) To be or not to be what you eat: Regulation of stoichiometric homeostasis among autotrophs and heterotrophs. Oikos 119 (5):741-751 (* all authors contributed equally). DOI: 10.1111/j.1600-0706.2010.18545.x Adrian A. Bischoff, Patrick Fink & Uwe Waller (2009) The fatty acid composition of Nereis diversicolor cultured in an integrated recirculated system: possible implications for aquaculture. Aquaculture 296: 271-276. DOI: 10.1016/j.aquaculture.2009.09.002 Patrick Fink (2008). Algal food quality affects growth of a benthic herbivore. Verhandlungen der Internationalen Vereinigung für theoretische und angewandte Limnologie (SIL) 30 (4): 531-533. Patrick Fink (2007). Ecological functions of volatile organic compounds in aquatic systems. Marine and Freshwater Behaviour and Physiology 40 (3): 155-168. DOI: 10.1080/10236240701602218 (among the 20 most read articles of Mar. Freshw. Behav. Physiol., see the journal's website!) György Abrusan, Patrick Fink and Winfried Lampert (2007). Biochemical limitation of resting egg production in Daphnia. Limnology and Oceanography 52 (4) : 1724-1728. DOI: 10.4319/lo.2007.52.4.1724 Patrick Fink and Eric von Elert (2006). Physiological responses to stoichiometric constraints: nutrient limitation and compensatory feeding in a freshwater snail. Oikos 115 (3): 484-494. DOI: 10.1111/j.2006.0030-1299.14951.x Patrick Fink, Eric von Elert and Friedrich Jüttner (2006). Oxylipins from freshwater diatoms act as attractants for a benthic herbivore. Archiv für Hydrobiologie 167 (1-4): 561-574. DOI: 10.1127/0003-9136/2006/0167-0561 Patrick Fink, Eric von Elert and Friedrich Jüttner (2006). Volatile foraging kairomones in the littoral zone: attraction of an herbivorous freshwater gastropod to algal odors. Journal of Chemical Ecology 32 (9): 1867-1881. DOI: 10.1007/s10886-006-9115-y Patrick Fink, Lars Peters and Eric von Elert (2006). Stoichiometric mismatch between littoral invertebrates and their periphyton food. Archiv für Hydrobiologie 165 (2): 145-165. DOI: 10.1127/0003-9136/2006/0165-0145 Patrick Fink and Eric von Elert (2006). Food quality of algae and cyanobacteria for the freshwater gastropod Bithynia tentaculata: the role of polyunsaturated fatty acids. Verhandlungen der internationalen Vereinigung für theoretische und angewandte Limnologie (SIL) 29 (3): 1235-1240. Patrick Fink (2006) Food quality and food choice in freshwater gastropods: Field and laboratory investigations on a key component of littoral food webs. Logos Verlag, Berlin 133 pp. ISBN 3-8325-1203-9. Order a copy at the publisher's website. Erik J. Van Hannen, Patrick Fink and Miquel Lürling (2002). A revised secondary structure model for the internal transcribed spacer 2 of the green algae Scenedesmus and Desmodesmus and its implications for the phylogeny of these algae. European Journal of Phycology 37 (2): 203-208. DOI: 10.1017/S096702620200361X conference proceedings (in German) Patrick Fink (2008). Schlechte Futterqualität und wie man damit umgehen kann: die Ernährungsökologie einer Süßwasserschnecke. Tagungsbericht, Deutsche Gesellschaft für Limnologie (DGL) - Jahrestagung 2007 (Münster): 2-6. Patrick Fink und Eric Von Elert (2006). Das C:N:P-Verhältnis von Periphyton und seine ökologische Relevanz für herbivore Makroinvertebraten. Tagungsbericht, Deutsche Gesellschaft für Limnologie (DGL) - Jahrestagung 2005 (Karlsruhe): 308-311. Patrick Fink und Eric Von Elert (2004). Freisetzung flüchtiger organischer Verbindungen aus benthischen Süßwasseralgen durch weidende Schnecken. Tagungsbericht, Deutsche Gesellschaft für Limnologie (DGL) - Jahrestagung 2003 (Köln): 569-573. Patrick Fink und Eric Von Elert (2003). Chemosensorische Futterwahl limnischer Gastropoden. Tagungsbericht, Deutsche Gesellschaft für Limnologie (DGL) - Jahrestagung 2002 (Braunschweig): 329-333. Patrick Fink und Eric Von Elert (2002). Daphnia-induzierte Coenobienbildung bei Scenedesmus obliquus - chemische Charakterisierung des Kairomons. Tagungsbericht, Deutsche Gesellschaft für Limnologie (DGL) - Jahrestagung 2001 (Kiel): 579-584. Contact me for reprints (replace "[at]" by "@").
More Info on my research on ResearchGate.net or Academia.edu and my private website
[TOP]

Workgroup Aquatic Chemical Ecology Prof. Dr. Eric von Elert Home page

Dr. Patrick Fink

Workgroup Aquatic Chemical Ecology
Prof. Dr. Eric von Elert
Home page