IGB: Biology and Ecology of Fishes: Personnel

Research Projects

2009-2013: BioFresh - Biodiversity of Freshwater Ecosystems: Status, Trends, Pressures, and Conservation Priorities

http://www.freshwaterbiodiversity.eu/

PIs: Klement Tockner, Jörg Freyhof, Rita Adrian, Michael Monaghan (plus 18 partners) Funding: EU - FP7

BioFresh - Biodiversity of Freshwater Ecosystems: Status, Trends, Pressures, and Conservation Priorities - is a large, integrative EU-funded project. BioFresh aims to build a freshwater biodiversity information platform to bring together, and make publicly available, the vast amount of information on freshwater biodiversity currently scattered among a wide range of databases. BioFresh will provide spatially-explicit information on the status and trends of freshwater biodiversity and its ecosystem services. Using the data to search for past and present impacts of multiple stressors, the project will significantly improve our ability to predict future responses of freshwater biodiversity and its services to climate and socioeconomic pressures. These responses will be investigated at global, continental and local scale with a focus on European biodiversity. The BioFresh project will start on February 1st, 2010, and has a duration of four years (Coordinator: Klement Tockner; contact: tockner@igb-berlin.de; freyhof@igb-berlin.de).

2006-present: Rivers of Europe

PIs: Klement Tockner, Urs Uehlinger, Chris Robinson, Fabian Peter, Diego Tonolla, Rosi Siber
PhD project: Nike Sommerwerk (starting 2008)
Funding: Eawag and IGB

Book “Rivers of Europe”: It is an edited volume in which specialists write chapters on the major river basins or regions of Europe. The book begins with an Introduction covering general aspects of the geology, hydrology, ecology, and human impacts on European rivers. Rivers selected for coverage include the largest, the most natural, and the most affected by human impacts. A major theme of the book is to compare one system to another in terms of its physiography, hydrology, ecology, biodiversity, and human impacts.

European Catchment Data Base: Linked to the book is the European Catchment Data Base. The goal of this data base is to provide quantitative data on catchment parameters, on environmental trends (hydrology, water temperature, land use, water stress), and on species diversity patterns for entire Europe (a total of 165 catchments are included at present in this data base; see map below). At present, we are working on a European Catchment Pressure Index by combining information on land use, water stress, fragmentation, and the proportion of nonnative fish species. A first paper entitled “European Catchments under Pressure” is in progress. In this paper we provide information on the present state of European catchments and discuss priority areas for conservation and management.

2004-2009: Habitat requirements of amphibians in dynamic ecosystems

PIs: Lukas Indermaur, Klement Tockner, Beat Naef, Benedikt Schmidt
PhD-project: Lukas Indermaur
Funding: Mava-Foundation

Just a century ago amphibians peaked in numbers and species in riverine landscapes. Because of the rapid loss of riverine wetlands amphibians today are mainly restricted to isolated and man-made water bodies. By common garden experiments we got a good understanding of amphibian ecology under semi-natural or artificial conditions. In contrast to that we know little about amphibians in their natural habitat, the place where amphibian’s ecology evolved. The floodplain of the Tagliamento-River, considered as a reference ecosystem because of its naturalness, offers the rare opportunity to study how amphibians cope in a highly dynamic system. The dynamic nature of riverine landscapes affects the distribution and population dynamics of amphibians at every life stage; but in which direction and how can we measure that?

The main questions of the project are:

Which processes explain survival and population size of amphibian larvae along a disturbance gradient?
Which pond type contributes most to the survival of amphibian larvae in a dynamic floodplain?
Are disturbances necessary to maintain viable amphibian populations?
Which factors explain the occupancy pattern of breeding sites in a system of emerging and disappearing patches?
Do adult amphibians use their summer habitat selective or random?
Which factors predict the distribution of amphibians within their summer habitat?

2006-2009: Sound of Rivers

PIs: Klement Tockner, Kurt Heutschi, Berit Junker, Diego Tonolla
Funding: Mava-Foundation

The project „Sound of Alpine Rivers“ has five major goals:

The „sound“ of rivers is used to assess the aesthetic value of river ecosystems. The key question is to what extent optical and acoustic criteria can be combined to evaluate the human appreciation of intact river ecosystems.
Acoustic „fingerprinting“ techniques are developed to assess the ecological integrity of river ecosystems. We relate acoustic signals, using hydrophones, to the hydrogeomorphic conditions at local and regional scales.
This project should help to develop a routine program to assessing the aesthetic value of entire landscapes.
We try to implement novel and innovative criteria to simultaneously assess the ecological and the aesthetic value of ecosystems and therefore to support the sustainable management of river ecosystems. In addition, we try to develop simple indicators to evaluating minimum flow requirements.
A major aim of the project is to increase the sensitivity of the society for the aesthetic and ecological values of intact river ecosystems.

2006-2010: From Waste to Value – Using black soldier flies as key “ecological engineers” in low- and middle-income countries

PIs: Chris Zurbrügg, Klement Tockner
PhD project: Stefan Diener
Funding: Velux-Foundation

Waste management in low- and middle-income countries is yet an unsolved problem. Especially urban areas in the developing world are seriously affected by the risks of deficient services or lacking waste treatment approaches. Municipal authorities, responsible for waste collection, transport and disposal, rarely have appropriate strategies, financial resources, and the necessary appropriate infrastructure for a well organised waste management system. A typical feature of solid waste in developing countries is the high organic fraction (>50%). Recovery, treatment and reuse of this easily biodegradable material is still limited although it has a very high recovery potential. One potential approach of organic waste management is by using Black Soldier Fly (Hermetia illucens L.) larvae as living ecological engineers. The flies during their adult stage do not take up food. Thus they do not touch any degrading or fresh organic matter including foodstuffs and are therefore not unsanitary or vectors of diseases. The larvae feed on the organic waste. Besides the digested organic material, which can be used in the same way as normal compost, a valuable protein-rich by-product in form of harvested insect larvae is generated. Thus the approach - while treating the biodegradable fraction in an environmentally sound way – reinforces business and income opportunities and contributes to farmers livelihoods.

The main objective of the project is to establish a sustainable “technology” of efficient waste degradation by Hermetia illucens.

The specific objectives are:

to understand and quantify the key biological and physico-chemical processes during the life-cycle of the insect
to gain knowledge on the waste transformation process, as well as the quality and quantity of the resulting products (prepupae and digestate)
to establish the determinants influencing the successful adoption of this technology and its applicability for business opportunities in low-and middle income countries
to facilitate the application and dissemination of this technology through a controlled pilot plant in Costa Rica in close collaboration with local research partners and stakeholders.

2007-2010: Effect of environmental heterogeneity and hydrological connectivity on biogeochemical transformations of nutrients and organic matter (OM)

PIs: Edith Kaiser, Klement Tockner, Bernhard Wehrli, Tom Gonser, Stuart Findlay
PhD project: Simone Peter
Funding: ETH domain (Competence Center for Environmental Sustainability)

The key objectives of the study section covered by the PhD student are to quantify vectors for nutrients and OM delivery to floodplain zones, the transformation processing in the floodplain itself, and the effect of heterogeneity (habitat composition and configuration, and fluvial linkages) on these processes. We will focus on two key functions, N and organic C cycling, and on the major processes involved (i.e. leaching, denitrification, nitrification, mineralization, microbial C uptake and production, sediment respiration). We will combine empirical field research with controlled field and laboratory experiments to cover the full spatial range from individual patches to the entire river-floodplain complex.

The key research hypotheses are:

H1: Configuration matters: The overall effect of surface–subsurface hydrological exchanges on nutrient and OM transformation not only depends on the type of patches that are present, but also on their size, shape and distribution. The spatial arrangement of FPZs along individual surface and hyporheic flowpaths controls the transformation capacity and the end products for both nutrients and OM.

H2: Connectivity matters: The hydrological regime controls rates of microbial transformation of nutrients and natural OM. We predict that habitat and floodplain-scale transformation capacity increases the turnover rate of nutrients and OM and controls the quality of by/end-products by an increase of resource exchange much exchange may not allow time for transformation, probably some intermediate maximum] (i.e., water) across habitat patches.

H3: Sources matter: The origin of OM affects the transformation capacity of floodplains. The nature of the organic constituents will influence the balance among storage, mineralization or biogeochemical transformation. The bioavailability of DOM depends on its origin and molecular characteristics, the time-scale of microbial response (enzymatic activity), and on the hydraulic properties of a patch.

2007-2009: A Stream Ecosystem Metabolism Model

PIs: Vicenc Acuna, Urs Uehlinger, Peter Reichert, Klement Tockner
Postdoc: Vicenc Acuna
Funding: EU Marie-Curie Mobility Program

This project is aimed to analyze the effect of scale (spatial and temporal) on the response of lotic ecosystems to floods, the most common pulse disturbance in temperate latitudes. The impact of floods on benthic communities and ecosystem processes, and subsequent recovery has been investigated in some detail. These studies typically including a reach or smaller spatial unit demonstrated that the stability of the study system was characterized by low resistance to disturbance but high resilience (rapid recovery). However, it is expected, that the perception of ecosystem stability changes with system size (scale), large systems (e.g., a high order reach or a stream network) are considered to be more resistant but less resilient than smaller systems (a low order reach or habitats within a reach).

2007-2010: Habitat heterogeneity in stream restoration

PIs: Chris Robinson, Armin Peter, Klement Tockner
PhD project: Maria Alp
Funding: Bafu (Swiss Federal Institute for Environment) and Eawag

Continuation project of the Rhône-Thur program. We will examine habitat heterogeneity and refugia use in stream restoration. The primary question is how habitat heterogeneity influences the biodiversity and the resistance and resilience properties of macrozoobenthos and fish

2008-2011: MIRAGE: Mediterranean Intermittent River ManAGEment

PIs: Klement Tockner, Joerg Gelbrecht, Michael Hupfer, Daniel von Schiller
PhD project: N.N.
Funding: European Union (FP 7)

Research part on “Structural and functional assessment of temporary streams: A linked aquatic and terrestrial perspective” (together with Narcis Prat et al.). This focus is on the functional linkages between aquatic and terrestrial assemblages across spatiotemporal ecotones, (ii) identify the key environmental predictors that create and maintain these assemblages and linkages (e.g. spatial and temporal availability of refugia), and (iii) develop a process-based evaluation strategy for temporary streams by quantifying the trophic linkages between aquatic and terrestrial assemblages and by quantifying ecosystem metabolism. The overall goal is to provide a novel integrated assessment tool for temporary streams by combining structural condition with functional performance.

2009-2011 An Evolutionary Approach to Biodiversity Conservation: Riverine Floodplains of the European Alps as a Model System.

PIs: Kozo Watanabe, Michael Monaghan, Klement Tockner

Funding: EU-Marie Curie grant

The importance of evolutionary relatedness of species is increasingly recognized in both ecology and conservation. What remains is a need for quantitative predictions on the role of evolution and a synthesis of methods. This project uses DNA surveys of aquatic insect communities to measure species diversity and genetic relatedness in riverine floodplains. Riverine floodplains are one of the most biodiverse ecosystems on earth and create a very high spatio-temporal heterogeneity. Unfortunately, the most diverse and abundant aquatic insects are poorly known at the species level, therefore research that has been carried out to link biodiversity and the spatiotemporal heterogeneity relies on estimates of diversity and has lacked an evolutionary perspective. The project examines the role of habitat heterogeneity in the evolutionary processes of structuring biodiversity by sampling communities from 4 habitat types at each of 6 study reaches along 3 natural riverine corridors in the Alps. It will construct a ‘DNA profile’ of macroinvertebrate communities using DNA sequences and coalescent-based modeling to delineate species, determine the extent of local and regional endemism of species, reconstruct a phylogeny of all samples and calculate phylogenetic diversity of individual habitats, individual reaches, and whole river corridors, and use the resulting tree topology to examine the degree of phylogenetic clustering and overdispersion as a means to quantify the role of evolution in community assembly. The project explores 3 timely research topics: the linkage of ecology and phylogeny, the integration of evolutionary criteria in conservation management, and DNA-based biodiversity surveys.

2008- Ecological and evolutionary consequences of light pollution

PIs: Franz Hölker, Christian Wolter, Klement Tockner

PhD project: Liz Perkins (starting 2009)

Funding: Freie Universität Berlin

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Publications

2010

Hölker, F., Moss T., Griefahn B., Kloas W., Voigt C.C., Henckel D., Hänel A., Kappeler P.M., Völker S.,  Schwope A., Franke St., Uhrlandt D., Fischer J., Wolter C. & Tockner K. 2010. The dark side of light - A transdisciplinary research agenda for light pollution policy. Ecology and Society. In Press. 


Harner, M.J., N. Opitz, K. Geluso, K. Tockner  and M.C. Rillig. 2010. Arbuscular mycorrhizal fungi on developing islands within a dynamic river floodplain: an investigation across successional gradients and soil depth. Aquatic Sciences. In Press. 

Tonolla, D., Acuna, V., Uehlinger, U., Frank, T. and K. Tockner. 2010 Thermal heterogeneity in river floodplains. Ecosystems. 13: 727 - 740. 

Acuna V. and K. Tockner. 2010. The effects of alterations in temperature and
flow regime on organic carbon dynamics in Mediterranean river networks. Global
Change Biology.  16: 2638 - 2650.

Indermaur, L., Schaub, M., Jokela, J., Tockner, K. and B.R. Schmidt. 2010.
Differential response to abiotic conditions and predation risk, rather than
competition avoidance, determine breeding site selection by anurans.
Ecography. Accepted.

Indermaur, L., Schmidt, B.R., Tockner, K. and M. Schaub. 2010. Spatial
variation in abiotic and biotic factors in a floodplain determine anuran body
size and growth rate at metamorphosis. Oecologia.   122: 306 - 317.

Larned, S.T., Daltry T., Arscott, D.B. and K. Tockner. 2010 Emerging concepts
in temporary river ecology. Freshwater Biology.  55: 717 - 738.

Milner, A.M. and K. Tockner. 2010 (Eds) Freshwater Benthic Science – what has
it contributed to ecological theory? River Research and Applications. Special
Issue. 26: 86pp.

Milner, A.M. and K. Tockner. 2010. Introduction. River Science - what has it
contribued to general ecological theory? River Research and Management. 26: 1–4.

Sommerwerk, N., Bloesch, J., Paunović, M., Baumgartner, C., Venohr, M.,
Schneider-Jacoby, M., Hein, T. and K. Tockner. Managing the world’s most
international river basin: the Danube. 2010 Marine and Freshwater Research. 61: 736 - 748. . 

Tockner, K., Lorang, M.S. and J.A. Stanford. 2010. River floodplains are model
ecosystems to test general hydrogeomorphic and  ecological concepts. River
Research and Applications. 26: 76–86.

Tockner, K., Lorang, M.S., Borchardt, D., and M. Pusch. 2010. Multiple
stressors in coupled river-floodplain ecosystems. Freshwater Biology. 55
(Suppl. 1): 135–151.

Tonolla, D., Acuña, V. Lorang, M.S., Heutschi, K. & K. Tockner. 2010.
Underwater soundscapes of characteristic river habitat types. Hydrological
Processes. Accepted pending final revision.

Yoshimura, C., Fujii, F., Omura, T., and K. Tockner. Instream release of
dissolved organic matter from coarse and fine particulate organic matter of
different origins. Biogeochemistry. In Revision.

2009

Tonolla, D., Lorang, M.S., Heutschi, K., and K. Tockner. 2008 A flume experiment to examine underwater sound generation by flowing water. Aquatic Sciences. 71: 449-462.

Tockner, K., A. Wueest, and S. Findlay. 2009. Aquatic Sciences celebrates its 20th anniversary. Aquatic Sciences. 71:1-2. (Editorial)

Indermaur, L., Winzeler, T., Schmidt, B. R., K. Tockner, and Schaub, M. 2009. Differential resource selection within shared habitat types across spatial scales in sympatric toads. Ecology. In press.

Gurnell, A., Tubino, M. and K. Tockner. 2009. Linkages and feedbacks in highly dynamic alpine fluvial systems. Foreward. Aquatic Sciences 71: 251- 252.

Bertoldi, W., Gurnell, A.M., Surian, N., Tockner, K., Zanoni, L., Ziliani, L., and G. Zolezzi. 2009. Linking Hydrology, Geomorphology and Ecology of a Multi-thread River: Time Scales of Variability and Change on the Tagliamento River as a Reference for River Restoration. River Research and Applications. 25: 501-516.

Acuna, V., and K. Tockner. 2009. Surface-subsurface water exchange rates along alluvial river reaches control the thermal patterns in an Alpine river network. Freshwater Biology. 54: 306-320.

Indermaur, L., Gehring, M., Wehrle, W., Tockner, K. & Naef-Daenzer, B. 2009. Behavior-based scale definitions for determining individual space use: requirements of two amphibibians. American Naturalist. 173: 60-71.

Tockner, K., Uehlinger, U., Robinson, C.T, Tonolla, D., Siber, R., and F.D. Peter European Rivers. 2009. In Likens, G.E. (eds). Encyclopedia of Inland Waters. Elsevier. p. 366-377.

Tockner, K., Uehlinger, U., and C.T. Robsinson (eds) 2009. Rivers of Europe. Academic Press. 700 pages.

Tockner, K., Uehlinger, U., Robinson, C.T, Tonolla, D., Siber, R., and F.D. Peter. 2009. Introduction to European Rivers. In: Tockner, K., Uehlinger, U., and C.T. Robsinson (eds). Rivers of Europe. Academic Press. p 1-23.

Sommerwerk, N., Baumgartner, C., Bloesch, J., Hein, T., Ostojić, A., Paunović, M., Schneider-Jacoby, M., Siber, R., and K. Tockner. 2009. Danube River Basin. In: Tockner, K., Uehlinger, U., and C.T. Robsinson (eds). Rivers of Europe. Academic Press. p. 59-112.

Yarushina, M.I., Eremkina, T.V., and K. Tockner. 2009. Ural River Basin. In: Tockner, K., Uehlinger, U., and C.T. Robsinson (eds). Rivers of Europe. Academic Press. p. 673-84

2008

Acuna, V., Wolf, A., Uehlinger, U., and Tockner, K. 2008. Temperature dependence of stream benthic respiration in an Alpine river network and its relevance to global warming. Freshwater Biology. 53: 2076-2088.

Arrigoni, A., Findlay, S., Fischer, D. Tockner, K. 2008 Predicting carbon and nutrient transformations in tidal freshwater wetlands of the Hudson River. Ecosystems. 11: 790-802.

Langhans, S.D., Tiegs, S.D., Gessner, M. and Tockner, K. 2008. Leaf decomposition heterogeneity across a riverine floodplain mosaic. Aquatic Sciences. 70: 337:346.

Indermaur, L., Schmid, B.R., and Tockner K. 2008. Impact of transmitter weight and tracking duration on body mass change of two anuran species. Amphibia-Reptilia. 29: 263-269.

Tockner, K., Bunn, S.E., Quinn, G., Naiman, R., Stanford, J.A., and Gordon, C. 2008. pr. 45-61. Floodplains: Critically threatened ecosystems. In: Polunin, N.C. (eds), Aquatic Ecosystems. Cambridge University Press.

Paetzold, A., Yoshimura, C., and Tockner, K. 2008. Differential effects of flow regulation and channel regulation on riparian arthropod diversity and density. Journal of Applied Ecology. 45: 894-903.

Yoshimura, C., Gessner, M., Furumai, and Tockner, K. 2008. Chemical characterization, microbial respiration, and decomposition of fine particulate organic matter (FPOM) in streams. Journal of the North American Benthological Society. 27: 664-673.

Wantzen, K.M., Yule, C.M., Tockner, K. and Junk, W.J. 2008. Riparian Wetlands of Tropical Streams.pp. 199-217. In Dudgeon, D. (ed) Tropical Streams Ecology Elsevier. San Diego.

2007

Tockner, K. 2007. River restoration: linking science with application. Ecology and Civil Engineering. 10:15-25.

Paetzold, A., Sadler, J., Langhans, S.D., Findlay, S. and K. Tockner. 2007. Aquatic-terrestrial interactions along riparian corridors. In: P.J. Wood, D.M. Hannah, J.P. Sadler (eds). Hydroecology and Ecohydrology: Past, Present and Future. Wiley.

Döring, M., Uehlinger, U., Schläpfer, D., Rotach, A. and Tockner, K. 2007. Large-scale expansion and contraction dynamics along an unconstrained Alpine alluvial corridor (Tagliamento River, northeast Italy). Earth Surface Processes and Landforms. 32: 1693-1704.

Sulzberger, B. and Tockner, K. 2007. Aquatic research is an important prerequisite for understanding how our Planet Earth works. Aquatic Sciences. 96: i.

Reichert, P. M. Borsuk, M. Hostmann, S. Schweizer, C. Spörri, K. Tockner and B. Truffer. 2007. Concepts of decision support for river rehabilitation. Environmental Software and Modelling. 22: 188-201.

Woolsey, S., T. Gonser, M. Hostmann, B. Junker, A.Paetzold, C. Roulier, S. Schweizer, S.D. Tiegs, K. Tockner, C. Weber and A. Peter. 2007. A strategy to assess river restoration projects. Freshwater Biology. 52: 752-769.

Tiegs, S.D. Langhans, S.D. Tockner, K. and Gessner, M.O. 2007. Cotton strips as a surrogate of leaf litter decomposition in river-floodplain habitats. Journal of the North American Benthological Society. 26: 70-77.

2006

Hein, T., S. Preiner, F. Schiemer and K. Tockner. 2006. Limnological concepts as the basis to understanding river networks: Perspectives for the Danube. Archiv für Hydrobiologie Supplement Large Rivers. 158: 557-571.

Langhans S.D., Tiegs S.D., Uehlinger U. and K. Tockner. 2006. Environmental heterogeneity controls organic-matter dynamics in river-floodplain ecosystems. Polish Journal of Ecology. 54: 111-117.

Yoshimura, C., Tockner, K., Omura, T. and Moog, O. 2006. Species diversity and functional assessment of macroinvertebrates in Austrian rivers. Limnology. 7: 63-74.

Coops, H., Tockner, K., Amoros, C., Hein, T. and Quinn, G. 2006. Science-based management of large river-floodplains. In: Verhoeven, J.T.A., Beltman, B., Bobbink, R. and D.F. Whigham (eds) Wetlands as a natural resource. Volume 1. Wetlands and Natural Resource Management. Ecological Studies Vol AAA. Springer, Berlin.

Tockner, K., Karaus, U., Paetzold, A., Claret, C. and Zettel, J. 2006. Ecology of braided rivers. pp. 339-358. In. G. Sambrook Smith, J. Best, C. Bristow and G. E. Petts (Eds). Braided Rivers. IAS Special Publication. Blackwell Publisher.

Tockner, K., Klaus, I., Baumgartner, C. and Ward, J.V. 2006. Amphibian diversity and nestedness in a dynamic floodplain ecosystem (Tagliamento, NE Italy). Hydrobiologia. 565: 121-133.

Goetze, D., Karlowski, U., Porembski, S., Riede, K., Tockner, K. and Watve, A. 2006. Spatial and temporal biodiversity dynamics. In Barthlott et al. (eds) Biodiversity. Encyclopedia of Life Support Systems.

Langhans, S. D. and K. Tockner. 2006. The role of timing, duration, and frequency of inundation in controlling leaf-litter decomposition in a river-floodplain ecosystem (Tagliamento, NE Italy). Oecologia. 147: 501-509.

Malard, F., Uehlinger, U., Zah, R., and Tockner, K. 2006 Flood pulses and riverscape dynamics in a braided glacial river. Ecology. 87: 704-716

Nakamura, K., Tockner and K. Amano. 2006 River and wetland restoration: Lessons from Japan. BioScience. 56: 419-429.

Nakamura, K., Tockner and K. Amano. 2006 Restoration: European perspectives and lessons for Japan. Ecol. Civil. Eng. 8: 201-214. (in Japanese with English abstract).

Paetzold, A. Bernet, J. and Tockner, K. 2006. Rapid response of riparian arthropods to aquatic subsidy pulses. Freshwater Biology. 51: 1103-1115.

2005

Arscott, D.B., Tockner, K., and Ward, J.V. 2005. Lateral organization of aquatic invertebrates along the continuum of a braided floodplain river. Journal of the North American Benthological Society. 24: 934-954.

Gurnell, A.M., Tockner, K., Edwards, P.J. and G. Petts 2005. Effects of deposited wood on biocomplexity of river corridors. Frontiers in Ecology and Environment. 3: 377-382.

Karaus, U., Alder, L., and Tockner, K. 2005. Concave islands: Diversity and dynamics of parafluvial ponds in a gravel-bed river. Wetlands. 25: 26-37.

Jansson, R., Backx, H., Boulton, A.J., Dixon, M., Dudgeon, D., Hughes, F.M.R., Nakamura, K., Stanley, E.H., and Tockner, K. 2005. Stating mechanisms and refining criteria for ecologically successful river restoration: a comment on Palmer et al. (2005). Journal of Applied Ecology 42: 218.222.

Paetzold, A., Schubert, C. and Tockner, K. 2005. Aquatic-terrestrial linkages along a braided river: Riparian arthropods feeding on aquatic insects. Ecosystems. 8: 748-759.

Paetzold, A., and Tockner, K. 2005. Quantifying the effects of riparian arthropod predation on aquatic insect emergence. Journal of the North American Benthological Society. 24: 395-402

Yoshimura, C., Omura, T., Furumai, H. and Tockner, K. 2005. Present state of rivers and streams in Japan. River Research and Application 21: 93-112.