Institute of Ecology

Organisational unit: Institute

Organisation profile

The Institute of Ecology is the biological and natural science department of Leuphana University of Lüneburg. Research focuses on the effects of global changes such as climate change and land use change on organisms and communities biodiversity loss as well as on biological and chemical processes. In cooperation with the human sciences, socio-economic factors of ecosystem research are considered.

Main research areas

Research foci at the Institute of Ecology are the effects of global change such as climate change and land use change on organisms and their communities and on biological functional and chemical processes. The focus is on the causes and effects of declining animal and plant populations as well as current biodiversity loss and the associated changes in abiotic and biotic ecosystem functions. In collaboration with human science research groups at Leuphana University, socio-economic factors of ecosystem research are also jointly considered.

Experimental research takes place both in laboratories, in greenhouses and in open spaces at Leuphana University. Further, many investigations take place in cultivated landscapes and in urban areas. The field studies are carried out in various countries of the temperate and Mediterranean latitudes and the tropics and sub-tropics, but also regionally, e.g. in Lüneburg and the Lüneburg Heath. Research cooperations exist with many different national and international universities and non-university institutions such as local nature conservation organizations and schools. Particularly noteworthy are the cooperations with the Alfred Töpfer Academy for Nature Conservation and the biosphere reserve administration Niedersächsische Elbtalaue.

The courses range from basic and advanced courses in various sub-fields of ecology and biology, including the performance of experiments in laboratory practicals and in the field, to interdisciplinary courses in the Bachelor's and Master's programs.

In interdisciplinary courses, contents from the fields of landscape ecology, botany, soil ecology, zoology, genetics and nature conservation are linked together, as well as courses that combine different disciplines of the natural sciences with those of the human sciences.

  1. 2014
  2. Published

    Human-carnivore coexistence in a traditional rural landscape

    Dorresteijn, I., Hanspach, J., Kecskés, A., Latková, H., Mezey, Z., Sugár, S., von Wehrden, H. & Fischer, J., 08.2014, In: Landscape Ecology. 29, 7, p. 1145-1155 11 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  3. Published

    Temperature regimes and aphid density interactions differentially influence VOC emissions in Arabidopsis

    Truong, D. H., Delory, B. M., Vanderplanck, M., Brostaux, Y., Vandereycken, A., Heuskin, S., Delaplace, P., Francis, F. & Lognay, G., 08.2014, In: Arthropod-Plant Interactions : an international journal devoted to studies on interactions of insects, mites and other anthropods with plants. 8, 4, p. 317-327 11 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  4. Published

    Low-intensity agricultural landscapes in Transylvania support high butterfly diversity: Implications for conservation

    Loos, J., Dorresteijn, I., Hanspach, J., Fust, P., Rakosy, L. & Fischer, J., 24.07.2014, In: PLoS ONE. 9, 7, 11 p., e103256.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  5. Published

    High trees increase sunflower seed predation by birds in an agricultural landscape of Israel

    Schäckermann, J., Weiss, N., von Wehrden, H. & Klein, A. M., 16.07.2014, In: Frontiers in Ecology and Evolution. 2, 9 p., 35.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  6. Published

    Assessing Effects Through Laboratory Toxicity Testing

    Frazier, J., Pflugfleder, J., Aupinel, P., Decourtye, A., Ellis, J., Scott-Dupree, C., Huang, Z., Thompson, H., Bachman, P., Dinter, A., Vaughan, M., Vaissière, B., Maynard, G., Kasina, M., Johansen, E., Brittain, C., Coulson, M. & Nocelli, R. C. F., 14.07.2014, Pesticide Risk Assessment for Pollinators. Fischer, D. & Moriarty, T. (eds.). Wiley-Blackwell Publishing Asia, p. 75-94 20 p.

    Research output: Contributions to collected editions/worksChapterpeer-review

  7. Published

    Assessing Effects Through Semi-Field and Field Toxicity Testing

    Pettis, J., Tornier, I., Clook, M., Wallner, K., Vaissiere, B., Stadler, T., Hou, W., Maynard, G., Becker, R., Coulson, M., Jourdan, P., Vaughan, M., Nocelli, R. C. F., Scott-Dupree, C., Johansen, E., Brittain, C., Dinter, A. & Kasina, M., 14.07.2014, Pesticide Risk Assessment for Pollinators. Fischer, D. & Moriarty, T. (eds.). Wiley-Blackwell Publishing Asia, p. 95-119 25 p.

    Research output: Contributions to collected editions/worksChapterpeer-review

  8. Published

    Assessing Exposure of Pesticides to Bees

    Wisk, J., Pistorius, J., Beevers, M., Bireley, R., Browning, Z., Chauzat, M. P., Nikolakis, A., Overmyer, J., Rose, R., Sebastien, R., Vaissière, B., Maynard, G., Kasina, M., Nocelli, R. C. F., Scott-Dupree, C., Johansen, E., Brittain, C., Coulson, M., Dinter, A. & Vaughan, M., 14.07.2014, Pesticide Risk Assessment for Pollinators. Fischer, D. & Moriarty, T. (eds.). Wiley-Blackwell Publishing Asia, p. 45-74 30 p.

    Research output: Contributions to collected editions/worksChapterpeer-review

  9. Published

    Overview of a Proposed Ecological Risk Assessment Process for Honey bees (Apis mellifera) and Non‐Apis Bees

    Steeger, T., Alix, A., Moriarty, T., Fischer, D. L., Fischer, R., Brittain, C., Johnson, R. M., Johansen, E., Streissel, F., Miles, M. M., Lee-Steere, C. & Fry, M., 14.07.2014, Pesticide Risk Assessment for Pollinators. Fischer, D. & Moriarty, T. (eds.). Wiley Online Library, p. 121-148 28 p.

    Research output: Contributions to collected editions/worksChapterpeer-review

  10. Published

    Overview of Non-Apis Bees

    Vaughan, M., Vaissière, B., Maynard, G., Kasina, M., Nocelli, R. C. F., Scott-Dupree, C., Johansen, E., Brittain, C., Coulson, M. & Dinter, A., 14.07.2014, Pesticide Risk Assessment for Pollinators. Wiley-Blackwell Publishing Asia, p. 5-18 14 p.

    Research output: Contributions to collected editions/worksChapterpeer-review

  11. Published

    A unique nest-protection strategy in a new species of spider wasp

    Staab, M., Ohl, M., Zhu, C.-D. & Klein, A.-M., 02.07.2014, In: PLoS ONE. 9, 7, 8 p., e101592.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  12. Published

    Ecosystem services as a boundary object for sustainability

    Abson, D., von Wehrden, H., Baumgärtner, S., Fischer, J., Hanspach, J., Härdtle, W., Heinrichs, H., Klein, A.-M., Lang, D. J., Martens, P. & Walmsley, D., 07.2014, In: Ecological Economics. 103, 7, p. 29-37 9 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  13. Published

    Realigning the land-sharing/land-sparing debate to match conservation needs: considering diversity scales and land-use history

    von Wehrden, H., Abson, D. J., Beckmann, M., Cord, A. F., Klotz, S. & Seppelt, R., 07.2014, In: Landscape Ecology. 29, 6, p. 941-948 8 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  14. Published

    The Agrodiversity Experiment: three years of data from a multisite study in intensively managed grasslands Ecological Archives

    Kirwan, L., Connolly, J., Brophy, C., Baadshaug, O., Belanger, G., Black, A., Carnus, T., Collins, R., Cop, J., Delgado, I., de Vliegher, A., Elgersma, A., Frankow-Lindberg, B., Golinski, P., Grieu, P., Gustavsson, A.-M., Helgadottir, A., Höglind, M., Huguenin-Elie, O., Jorgensen, M., Kadziuliene, Z., Lunnan, T., Lüscher, A., Kurki, P., Porqueddu, C., Sebastia, M.-T., Thumm, U., Walmsley, D. & Finn, J., 11.06.2014, In: Ecology. 95, 9, p. 2680 1 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  15. Published

    Numerical responses of saproxylic beetles to rapid increases in dead wood availability following geometrid moth outbreaks in sub-arctic mountain birch forest

    Vindstad, O. P. L., Schultze, S., Jepsen, J. U., Biuw, M., Kapari, L., Sverdrup-Thygeson, A. & Ims, R. A., 09.06.2014, In: PLoS ONE. 9, 6, 13 p., e99624.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  16. Published

    A Voxel-based technique to estimate the volume of trees from terrestrial laser scanner data

    Bienert, A., Hess, C., Maas, H. G. & Von Oheimb, G., 05.06.2014, In: International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives. 40, 5, p. 101-106 6 p.

    Research output: Journal contributionsConference article in journalResearchpeer-review

  17. Published

    Assessing tree dendrometrics in young regenerating plantations using terrestrial laser scanning

    Li, Y., Hess, C., von Wehrden, H., Härdtle, W. & Oheimb, G., 06.2014, In: Annals of Forest Science. 71, 4, p. 453-462 10 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  18. Published

    Improving Flood Forecasting in a Developing Country: A Comparative Study of Stepwise Multiple Linear Regression and Artificial Neural Network

    Latt, Z. Z. & Wittenberg, H., 06.2014, In: Water Resources Management. 28, 8, p. 2109-2128 20 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  19. Published

    The impact of nuclear accidents on provisioning ecosystem services

    Gralla, F., Abson, D., Moller, A. P., Lang, D. J. & von Wehrden, H., 06.2014, In: Ecological Indicators. 41, p. 1-14 14 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  20. Published

    Tree Species Traits but Not Diversity Mitigate Stem Breakage in a Subtropical Forest following a Rare and Extreme Ice Storm

    Nadrowski, K., Pietsch, K., Baruffol, M., Both, S., Gutknecht, J., Bruelheide, H., Heklau, H., Kahl, A., Kahl, T., Niklaus, P. A., Kröber, W., Liu, X., Mi, X., Michalski, S. G., Oheimb, G., Purschke, O., Schmid, B., Fang, T., Welk, E. & Wirth, C., 30.05.2014, In: PLoS ONE. 9, 5, 7 p., e96022.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  21. Published

    Brown bear activity in traditional wood-pastures in Southern Transylvania, Romania

    Röllig, M., Dorresteijn, I., von Wehrden, H., Hartel, T. & Fischer, J., 01.05.2014, In: Ursus. 25, 1, p. 44-52 9 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  22. Published

    Carabids.org – a dynamic online database of ground beetle species traits (Coleoptera, Carabidae)

    Homburg, K., Homburg, N., Schäfer, F., Schuldt, A. & Aßmann, T., 05.2014, In: Insect Conservation and Diversity. 7, 3, p. 195-205 11 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  23. Published

    Functional and phylogenetic diversity of woody plants drive herbivory in a highly diverse forest

    Schuldt, A., Aßmann, T., Bruelheide, H., Durka, W., Eichenberg, D., Härdtle, W., Kröber, W., Michalski, S. G. & Purschke, O., 05.2014, In: New Phytologist. 202, 3, p. 864-873 10 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  24. Published

    Habitat suitability models in conservation planning – a short introduction

    Dieker, P., Taboada Palomares, A. & von Wehrden, H., 05.2014, Jewels in the Mist: A synopsis on the highly endangered butterfly species the Violet Copper, Lycaena helle. Habel, J. C., Meyer, M. & Schmitt, T. (eds.). Sofia: Pensoft Publishers Ltd., p. 57-65 9 p.

    Research output: Contributions to collected editions/worksContributions to collected editions/anthologiesResearchpeer-review

  25. Published

    Land sparing versus land sharing: moving forward

    Fischer, J., Abson, D., Butsic, V., Chappell, M. J., Ekroos, J., Hanspach, J., Kuemmerle, T., Smith, H. G. & von Wehrden, H., 05.2014, In: Conservation Letters. 7, 3, p. 149-157 9 p.

    Research output: Journal contributionsScientific review articlesResearch

  26. Published

    Pollination of two oil-producing plant species: Camelina (Camelina sativa L. Crantz) and pennycress (Thlaspi arvense L.) double-cropping in Germany

    Groeneveld, J. H. & Klein, A.-M., 05.2014, In: Global Change Biology : Bioenergy. 6, 3, p. 242-251 10 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  27. Published

    glUV: A global UV-B radiation data set for macroecological studies

    Beckmann, M., Václavík, T., Manceur, A. M., Šprtová, L., von Wehrden, H., Welk, E. & Cord, A. F., 04.2014, In: Methods in Ecology and Evolution. 5, 4, p. 372-383 12 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  28. Published

    Mindfulness As/Is Care: Biopolitics, Narrative Empathy, and Technoscientific Practices

    Stingl, A. I. & Weiss, S. M., 21.03.2014, The Wiley Blackwell Handbook of Mindfulness. Le, A., Ngnoumen, C. T. & Langer, E. J. (eds.). Wiley-Blackwell Publishing Asia, Vol. 1-2. p. 608-629 22 p.

    Research output: Contributions to collected editions/worksChapterpeer-review

  29. Published

    Bat pest control contributes to food security in Thailand

    Wanger, T. C., Darras, K., Bumrungsri, S., Tscharntke, T. & Klein, A. M., 03.2014, In: Biological Conservation. 171, p. 220-223 4 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  30. Published

    Do wild bees complement honeybee pollination of confection sunflowers in Israel?

    Pisanty, G., Klein, A.-M. & Mandelik, Y., 03.2014, In: Apidologie. 45, 2, p. 235-247 13 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  31. Published

    Effects of anthropogenic disturbances on soil microbial communities in oak forests persist for more than 100 years

    Fichtner, A., Oheimb, G., Härdtle, W., Wilken, C. & Gutknecht, J., 03.2014, In: Soil Biology and Biochemistry. 70, p. 79-87 9 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  32. Published

    Erdsystem, Klima und globale Stoffkreisläufe

    Palm, W.-U. & Urban, B., 03.2014, Nachhaltigkeitswissenschaften. Heinrichs, H. & Michelsen, G. (eds.). Berlin: Springer Verlag, p. 213-257 45 p.

    Research output: Contributions to collected editions/worksContributions to collected editions/anthologiesEducation

  33. Published

    Methoden und Methodologie in den Nachhaltigkeitswissenschaften

    Lang, D. J., Rode, H. & von Wehrden, H., 03.2014, Nachhaltigkeitswissenschaften. Michelsen, G. & Heinrichs, H. (eds.). Berlin, Heidelberg: Springer Spektrum, p. 115-144 30 p.

    Research output: Contributions to collected editions/worksContributions to collected editions/anthologiesEducation

  34. Published

    Pathogen induced disturbance and succession in temperate forests: Evidence from a 100-year data set in southern Sweden

    Brunet, J., Bukina, Y., Hedwall, P.-O., Holmström, E. & Oheimb, G., 03.2014, In: Basic and Applied Ecology. 15, 2, p. 114-121 8 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  35. Published

    Plant diversity effects on pollinating and herbivorous insects can be linked to plant stoichiometry

    Abbas, M., Klein, A. M., Ebeling, A., Oelmann, Y., Ptacnik, R., Weisser, W. W. & Hillebrand, H., 03.2014, In: Basic and Applied Ecology. 15, 2, p. 169-178 10 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  36. Published

    Pollination and Plant Resources Change the Nutritional Quality of Almonds for Human Health

    Brittain, C., Kremen, C., Garber, A. K. & Klein, A.-M., 27.02.2014, In: PLoS ONE. 9, 2, 7 p., e90082.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  37. Published

    archiDART: a R package allowing root system architecture analysis using Data Analysis of Root Tracings (DART) output files

    Delory, B., Baudson, C., Brostaux, Y., Pagès, L., du Jardin, P. & Delaplace, P., 07.02.2014, Book of short abstracts, poster presentations: 19th National Symposium on Applied Biological Sciences. Gembloux Agro-Bio Tech, p. 14 1 p.

    Research output: Contributions to collected editions/worksPublished abstract in conference proceedingsResearch

  38. Published

    Development of an ex-vitro system allowing plant-bacteria interactions through VOCs in the context of water stress

    Mendaluk - Saunier de Cazenave, M., Baudson, C., Delory, B., du Jardin, P. & Delaplace, P., 07.02.2014, Book of short abstracts, poster presentations: 19th National Symposium on Applied Biological Sciences. Gembloux Agro-Bio Tech, p. 98 1 p.

    Research output: Contributions to collected editions/worksPublished abstract in conference proceedingsResearch

  39. Published

    Quantitative gas chromatography - mass spectrometry profiling of volatile organic compounds produced by barley (Hordeum distichon L.) roots according to plant age

    Delory, B., Delaplace, P., du Jardin, P. & Fauconnier, M.-L., 07.02.2014, Book of short abstracts, Poster presentations: 19th National Symposium on Applied Biological Sciences. Gembloux Agro-Bio Tech, p. 82 1 p.

    Research output: Contributions to collected editions/worksPublished abstract in conference proceedingsResearch

  40. Published

    Mixed afforestation of young subtropical trees promotes nitrogen acquisition and retention

    Lang, A. C., von Oheimb, G., Härdtle, W., Scherer-Lorenzen, M., Yang, B., Ma, K., Trogisch, S. & Bruelheide, H., 02.2014, In: Journal of Applied Ecology. 51, 1, p. 224-233 10 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  41. Published

    Tree diversity promotes functional dissimilarity and maintains functional richness despite species loss in predator assemblages

    Schuldt, A., Bruelheide, H., Durka, W., Michalski, S. G., Purschke, O. & Aßmann, T., 02.2014, In: Oecologia. 174, 2, p. 533-543 11 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  42. Published

    Interannual variation in land-use intensity enhances grassland multidiversity

    Allan, E., Bossdorf, O., Dormann, C. F., Prati, D., Gossner, M. M., Tscharntke, T., Blüthgen, N., Bellach, M., Birkhofer, K., Boch, S., Böhm, S., Börschig, C., Chatzinotas, A., Christ, S., Daniel, R., Diekötter, T., Fischer, C., Friedl, T., Glaser, K., Hallmann, C., Hodac, L., Hölzel, N., Jung, K., Klein, A. M., Klaus, V. H., Kleinebecker, T., Krauss, J., Lange, M., Morris, E. K., Müller, J., Nacke, H., Pašalić, E., Rillig, M. C., Rothenwöhrer, C., Schall, P., Scherber, C., Schulze, W., Socher, S. A., Steckel, J., Steffan-Dewenter, I., Türke, M., Weiner, C. N., Werner, M., Westphal, C., Wolters, V., Wubet, T., Gockel, S., Gorke, M., Hemp, A., Renner, S. C., Schöning, I., Pfeiffer, S., König-Ries, B., Buscot, F., Linsenmair, K. E., Schulze, E. D., Weisser, W. W. & Fischer, M., 07.01.2014, In: Proceedings of the National Academy of Sciences (USA). 111, 1, p. 308-313 6 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  43. Published

    Diversity, threats and conservation of European wood-pastures

    Bergmeier, E. & Röllig, M., 01.01.2014, European Wood-pastures in Transition: A social-ecological approach. Hartel, T. & Plieninger, T. (eds.). London: Routledge Taylor & Francis Group, p. 19-38 20 p. 2

    Research output: Contributions to collected editions/worksChapterpeer-review

  44. Published

    Observing the Middle Elbe Biosphere in Germany by Means of TerraSAR-X Images

    Farghaly, D., Elba, E. & Urban, B., 01.01.2014, In: International Journal of Geosciences. 5, 2, p. 196-205 10 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  45. Published

    Plant and vegetation diversity in European wood-pastures

    Garbarino, M., Bergmeier, E., Roellig, M. & Sammul, M., 01.01.2014, European Wood-pastures in Transition: A Social-ecological Approach. Hartel, T. & Plieninger, T. (eds.). Taylor and Francis Inc., p. 113-131 19 p.

    Research output: Contributions to collected editions/worksChapterpeer-review

  46. Published

    Reconstruction of Past and Prediction of Future Benzo[a]pyrene Concentrations Over Europe

    Bieser, J., Aulinger, A., Matthias, V. & Quante, M., 01.01.2014, Air Pollution Modeling and its Application XXII: Environmental Security. Steyn, D., Builtjes, P. & Timmermans, R. (eds.). Springer Verlag, p. 59-63 5 p. (NATO Science for Peace and Security Series C: Environmental Security; vol. 137).

    Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

  47. Published

    The importance of ecosystem services for rural inhabitants in a changing cultural landscape in Romania

    Hartel, T., Fischer, J., Câmpeanu, C., Milcu, A. I., Hanspach, J. & Fazey, I., 01.01.2014, In: Ecology and Society. 19, 2, 9 p., 42.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  48. Published

    Wood-pasture management in southern Transylvania (Romania): From communal to where?

    Sutcliffe, L. M. E., Öllerer, K. & Röllig, M., 01.01.2014, European Wood-pastures in Transition: A social-ecological approach. Hartel, T. & Plieninger, T. (eds.). London: Routledge Taylor & Francis Group, p. 219-234 16 p.

    Research output: Contributions to collected editions/worksChapterpeer-review

  49. Published

    Wood-pasture management in southern Transylvania (Romania): From communal to where?

    Sutcliffe, L., Öllerer, K., Roellig, M. & Hartel, T., 01.01.2014, European Wood-pastures in Transition: A Social-ecological Approach. Hartel, T. & Plieninger, T. (eds.). Taylor and Francis Inc., p. 219-234 16 p.

    Research output: Contributions to collected editions/worksChapterpeer-review

  50. Published

    Designing forest biodiversity experiments: General considerations illustrated by a new large experiment in subtropical China

    Bruelheide, H., Nadrowski, K., Aßmann, T., Bauhus, J., Both, S., Buscot, F., Chen, X.-Y., Ding, B.-Y., Durka, W., Erfmeier, A., Gutknecht, J., Guo, D., Guo, L.-D., Härdtle, W., He, J.-S., Klein, A.-M., Kühn, P., Liang, Y., Liu, X., Michalski, S. G., Niklaus, P. A., Pei, K., Scherer-Lorenzen, M., Scholten, T., Schuldt, A., Seidler, G., Trogisch, S., Oheimb, G., Welk, E., Wirth, C., Wubet, T., Yang, X., Yu, M., Zhang, S., Zhou, H., Fischer, M., Ma, K. & Schmid, B., 01.2014, In: Methods in Ecology and Evolution. 5, 1, p. 74-89 16 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  51. Published

    Geochemical Assessment of Sediment Quality Using Multivariate Statistical Analysis of Ennore Creek, North of Chennai, SE Coast of India.

    Muthumanickam, J., Nagarajan, R., Velmurugan, P. M., Giridharan, L., Neetha, V. & Urban, B., 01.2014, In: Journal of Science and Technology. 22, 1, p. 315-328 14 p., JST-0407-2012.

    Research output: Journal contributionsJournal articlesResearchpeer-review