All scholarly work published in Naturwissenschaften has been subjected to rigorous peer review. Peer review is a tedious and often time-consuming process but essential for maintaining and developing high scientific standards. In 2013 alone, about 650 scientific peers from 44 countries volunteered their time to support the journal and science, and many have assisted in more than one case, for which I am highly grateful. Average time from submission to first decisions was 23 days in 2013, which is exceptionally fast and the result of peers’ commitment to the process. Peer review is not always an enjoyable process, neither for authors nor for reviewers, but it does undoubtedly increase the quality of science and scientific publishing. On average, I seek the views of three independent referees and, in many cases, the journal’s associate editors to provide additional report on manuscripts. Often, referees are willing to again assess revised work, which adds to the overall commitment to this process. Below is a list of the names of all colleagues who delivered a review in 2013, with the number of reviews in brackets if more than one. The information is derived from our online submission system; peers themselves mostly provide the information. Although this information should be correct, I would already like to apologise in case I have missed recognising the name of any referee. At the same time, I would also like to take the opportunity to thank my board of associate editors for their enormous support in the assessment of hundreds of manuscripts we receive each year.

Sven Thatje (Editor-in-Chief)

Adamik P, Czech Republic

Aerts P (2), Belgium

Agnarsson I (2), Puerto Rico

Aldrich JR, USA

Aldridge R, USA

Alexander K, UK

Almaas TJ, Norway

Almeida E, Brazil

Amorim F (3), Brazil

Amsler C, USA

Andreakis N, Australia

Angelici F, Italy

Anselmo DHAL, Brazil

Antenucci D, Argentina

Araujo A, Brazil

Aron S, Belgium

Aronson R, USA

Aryal A, New Zealand

Avargues-Weber A, UK

Averianov A, Russia

Ayasse M (2), Germany

Badenes-Perez F (2), Spain

Baer B, Australia

Bailey S, Canada

Baird E, Sweden

Bajerlein D (2), Poland

Ballantyne G, UK

Balletto E, Italy

Barnes B, USA

Bateman R, UK

Bauer R, USA

Beekman M (3), Australia

Beissinger S, USA

Bengtson S (2), Sweden

Benson R, UK

Bentall G, USA

Benton M, UK

Beyer H, UK

Bilde T, Sweden

Birkeland N, Norway

Birkhead TR, UK

Bisch-Knaden S, Germany

Bize P (2), UK

Blain HA, Spain

Blamires S, Taiwan

Blanchard R (2), USA

Bleckmann H, Germany

Bloch G, Israel

Blomquist G, USA

Bode N (2), USA

Boivin G, Canada

Bonde R, USA

Bonnet X, USA

Boucias DG (2), USA

Boulay R (2), Spain

Bowler D (2), Japan

Brack A, France

Bradshaw D, Australia

Brandenburg A, Switzerland

Breed M (2), USA

Brent C (3), USA

Briggs DEG (2), USA

Brischoux F, France

Brochu C, USA

Broder CC, USA

Brodzik R, Poland

Broesing A, Germany

Brook B, Australia

Brown TL, USA

Brusatte S (3), USA

Bryan H, Canada

Buffenstein R, USA

Bundgaard J, Denmark

Bundy J, UK

Burri R (2), Sweden

Buschbeck E (2), USA

Butler J, USA

Buzzini P, Italy

Caballero P, Spain

Calhim S, Finland

Cameron R (2), UK

Cameron C, Canada

Carney R, USA

Carpenter J, USA

Cartar R (2), Canada

Carver S, Australia

Caspers B (2), Germany

Cerda Sureda X, Spain

Cervo R, Italy

Cha TS, Malaysia

Chappell M, USA

Chaverri G, USA

Chen L, China

Chen D, USA

Cherry M, South Africa

Chevaldonne P, France

Chin-Baarstad A, USA

Chittka L, UK

Chouvenc T, USA

Christe P, Switzerland

Christy J, USA

Cicuttini F, Australia

Cifra M (2), Czech Republic

Ciurli S, Italy

Clark J, USA

Clarke J (2), Australia

Claude J, France

Clementz M, USA

Clouse R, USA

Cocroft R, USA

Cohen J, USA

Cokl A (2), Slovenia

Colazza S, ITALY

Colombelli-Negrel D, Australia

Colpo K, Argentina

Conrad J, USA

Cook C (2), USA

Córdoba AA (3), Mexico

Cothran R (2), USA

Cowled C, Australia

Cribb B (3), Australia

Croft DA, USA

Cross P, USA

Cross F, New Zealand

Crossland M, Australia

Crowley B, USA

Cruz-Lopez L (2), Mexico

Cummings M, USA

D’Alba L, USA

D’Alessio A, Italy

Dammhahn M (2), Canada

Dardente H, France

Davis A, USA

Dawson A (2), UK

de Garcia V, Argentina

de Iongh H, Netherlands

Deisig N, France

Del Giudice E, Italy

Deletre E (2), France

Demas G (2), USA

Demetrius L, USA

Desouhant E, France

Detrain C (2), Belgium

D’Ettorre P, France

Dicke M, Netherlands

Ditsche-Kuru P, Germany

Djediat C, France

Dodson P, USA

Donoghue P, UK

Dowsett H, USA

Dugas M, USA

Dunlop J (2), Germany

Dyer A (3), Australia

Dyke G, UK

Edwards HH, USA

Elias S, UK

Ellers J, Netherlands

Elmer K, UK

Enishi O, Japan

Entling M, Germany

Ernst A, Germany

Esteves da Silva JCG, Portugal

Evans S (2), UK

Evans S (2), Sweden

Evans J, USA

Evans D, Canada

Fanson B (2), Australia

Fathipour Y, Iran

Feduccia A, USA

Feeley H, UK

Feldmann R, USA

Fellous S, France

Fenner A, Australia

Fenton MB (2), Canada

Ferkin M, USA

Feron C, France

Ferrandon D, France

Fetecau RC, Canada

Filippi L, USA

Fincke O, USA

Flade M, Germany

Flaherty E, USA

Fleishman L, USA

Foitzik S, Germany

Font Bisier E, USA

Ford A, UK

Forrest J, Canada

Fossoy F, Norway

Freeberg T, USA

Freeman R, UK

Friedrich W, Denmark

Futahashi R, Japan

Gagliardo A, Italy

Gagos S, Greece

Gaillard JM, France

Gangoso L, Spain

Ganzhorn J (3), Germany

Gao D, USA

Garnier S, USA

Garwood R, UK

Geisler J, USA

Genner M, UK

Gensel P, USA

Gerber B, Germany

Gillam E, USA

Giroud S, Austria

Glover B, UK

Godfrey S, Australia

Goldingay R, Australia

Gomez G, USA

Gómez-Díaz E, Spain

Goodisman M (3), USA

Gordon K (2), New Zealand

Graham S, USA

Grant WS, USA

Gravel MA, Canada

Greeff J, South Africa

Griggio M, Austria

Grim T, Czech Republic

Gronenberg W (2), USA

Grozinger C (2), USA

Guénard B, USA

Guerrero Pérez A, Spain

Gupta SN, USA

Guschina I, UK

Guttinger HR, Germany

Gwynne DT, Canada

Haertel S, Germany

Hagelstein P (3), USA

Hager R, UK

Halanych K, USA

Hamel J, USA

Handa RJ, USA

Handegard NO, Norway

Hangartner S, Australia

Hanley D, Canada

Hansen T, Norway

Hanula J, USA

Hardus M, Netherlands

Hardy I, UK

Hare J, Canada

Hare K, New Zealand

Harrod C, UK

Harshman L, USA

Hartbauer M, Austria

Hartskeerl R, Netherlands

Hauber ME, USA

Hawlitschek O (2), Germany

Hedrick A, USA

Hefetz A, Israel

Helm B, USA

Henderson G, USA

Hendry A (2), Canada

Hepburn R, South Africa

Herberstein ME (2), Australia

Herrmann B, Germany

Hipfner M, USA

Hobaiter C, UK

Hohenbrink P, Germany

Hojdova M, Czech Republic

Hölldobler B, USA

Holt WV (2), UK

Holtz T, USA

Hone D, Ireland

Honza M, Czech Republic

Horsak M, Czech Republic

Horvath G (2), Hungary

Houpt T, USA

Hrncir M, Brazil

Huberty AF (2), USA

Hudelmaier M, Austria

Humber R, USA

Hunt R, USA

Hurd P, Canada

Husby A, Norway

Hutchings M, UK

Iglesias T, USA

Ingram T, USA

Iwamura Y (3), Japan

Jackson R, New Zealand

Jackson L, USA

Jacoby D, UK

James D, USA

Jandacka P, Czech Republic

Janik V, UK

Janssen A, Netherlands

Janussen D, Germany

Jarau S, Germany

Jarrar B, Saudi Arabia

Jiguet F (3), France

Johnson KA, USA

Johnston P, Germany

Jokela J, Switzerland

Jordaens K, Belgium

Joschko M, Germany

Junker R, Austria

Kadener S, Israel

Kaiser H, South Africa

Kaplan I, USA

Karasov W (2), USA

Karino K, Japan

Kastberger G, Austria

Kavaliers M, Canada

Kawecki TJ (2), Switzerland

Kellermann V, Australia

Kelly C, USA

Kelly G, Ireland

Kemp D, USA

Kemp W, USA

Kesler D, USA

Ketola T, Finland

Kimball B, USA

Kiontke K, USA

Kishkinev D (2), Russia

Klein N, Germany

Kloskowski J, Poland

Knorr C (2), Germany

Kocher S (2), USA

Kock R (3), UK

Koeniger N, Germany

Kolb G, Sweden

Koptur S, USA

Kortet R, Finland

Kramer D (2), Canada

Kreisinger J, Czech Republic

Kristensen T, Denmark

Kruger O, Germany

Kuntner M, Slovenia

Labandeira C, USA

Lafferty K, USA

Lanz-Mendoza H, Mexico

Latorre A, Spain

Latty T, Australia

Leclaire S, France

Lee Kwang P (2), South Korea

Lee SJ, South Korea

Leese F (2), Germany

Leese JM, USA

Legg D, UK

Lehmann G, Germany

LENA JP (2), France

Levett P, Canada

Levy R, New Zealand

Lewis S, USA

Li J, China

Liebig J, USA

Lihoreau M (5), Australia

Lilova K, USA

Lindblad P, Sweden

Loduca S, USA

Loffredo E, Italy

Logan D, UK

Louhi KR, Finland

Lovari S, Italy

Loyola RD (2), Brazil

Lupold S, USA

Lyytinen A, Finland

MacPhee R, USA

Macpherson E, Spain

Madrid JA, SPAIN

Maeno K, Japan

Magalhaes S, Portugal

Maia C, Brazil

Maisey J, USA

Makovicky P, USA

Mandahl N, Sweden

Manier M, USA

Mann R, Sweden

Manning S, USA

Manser M, Switzerland

Manson J, Canada

Martin SJ, UK

Martinez JG, Spain

Martinez-Pastor F (2), Spain

Martin-Hernandez R, Spain

Martins CF, Brazil

Mather T, UK

Mattila H (2), USA

Mayr G, Germany

Mazza CA, Argentina

Mazzoni V, Italy

McKubre M (3), USA

McLay C, New Zealand

Meana A, Spain

Medina R, USA

Meikle W, USA

Menegazzi P, Germany

Menzel R (2), Germany

Mescher M, USA

Miles M, USA

Millar J, USA

Millet J, Guadeloupe

Minor M (3), New Zealand

Mobley K, Germany

Moellmann C, Germany

Moller A, France

Monaghan P, UK

Moran N, USA

Morris S, USA

Morris M, USA

Morse D, USA

Motani R, USA

Mourao M, USA

Murphy S, USA

Musumeci F, Italy

Mzilikazi N, South Africa

Nagao S, Japan

Nakamura M, Japan

Nalepa C, USA

Neher D (2), USA

Nelson X, New Zealand

Nelson D, USA

Newton I, UK

Nol E, Canada

Norry F, Argentina

Nudds R, UK

Numata K, Japan

Nygaard S, Denmark

O’Connor R (2), France

O’Connor J, China

Oku K, Japan

Oldroyd BP (4), Australia

Ollerton J, UK

Olson R, USA

Olsson M (2), Australia

Oppel S, UK

Osakabe M, Japan

Ossenkopp KP, Canada

Owren M (2), USA

Paine T, USA

Pamilo P, Finland

Parks S, USA

Paulk A (2), Australia

Paxton RJ (2), UK

Pearce-Higgins J (2), UK

Peeters C, France

Pekar S (3), Czech Republic

Pelabon C, Norway

Penz C, USA

Perez-Staples D, Mexico

Perissinotto R (2), South Africa

Pertoldi C, Denmark

Petit E, France

Pielström S, Germany

Pierce S, UK

Pilastro A, Italy

Pirk C (2), South Africa

Pitnick S (2), USA

Pitt W, USA

Pleguezuelos J (2), Spain

Poinar Jr G (2), USA

Popham H, USA

Possee R, UK

Poulsen M, Denmark

Powell T, USA

Prager K, USA

Prevost G, France

Prigioni C, Italy

Procházka P, Czech Republic

Prowse T, Australia

Pruett-Jones S, USA

Pruitt J (2), USA

Pyenson N, USA

Qazi MB (2), USA

Quezada-Euan J, Mexico

Raesaenen K, Switzerland

Raffa K, USA

Rands S, UK

Rantala M, Finland

Rasmussen C, Denmark

Reggiani L, Italy

Rehault-Godbert S, France

Reitsema L, USA

Rellstab C, Switzerland

Ren D, China

Ribera I, Spain

Richardson PJ, Canada

Rick Ingolf P, Germany

Ridgway M, Canada

Riede T, USA

Riemensperger T, Germany

Riesch R, USA

Rivers D, USA

Robert J, USA

Roberts J (2), Australia

Roberts JA, USA

Robinson G (2), USA

Rodrigues HG, France

Rodriguez R (3) USA

Rogell B (2), Sweden

Rogers C, USA

Rooke J, UK

Rosa R, Brazil

Roscher C, Germany

Rosenberg J (2), Germany

Rosengaus RB (2), USA

Rosenheim JA (2), USA

Rosenkranz P, Germany

Roskaft E, Norway

Roubik D, USA

Roulin A (2), Switzerland

Rowe J, USA

Ruckstuhl K, Canada

Ruhli F, Switzerland

Ruiz M, Puerto Rico

Russo D, Italy

Ruther J, Germany

Rykowska I, Poland

Ryu CM, USA

Salewski V, Germany

Salthe S, USA

Salzmann U, UK

Sanborn AF, USA

Sánchez-Moreno S, Spain

Santos M, Spain

Sato T, Japan

Sayigh L, USA

Schaerf T, Australia

Schatz B, France

Schausberger P (2), Austria

Scheyer T (2), Switzerland

Schiffner I (2), Australia

Schilthuizen M (2), Malaysia

Schlegel T, Germany

Schmitz L (2), USA

Schmitz H, Germany

Schnell S, USA

Schoenemann B (2), Germany

Schorkopf DL, Sweden

Schou M, Denmark

Schultheiss P, Australia

Scott A, UK

Seeley T (2), USA

Segar S, Czech Republic

Selbmann L, Italy

Selden P, USA

Semeniuk C (2), Canada

Series P, UK

Shiotsuki T, Japan

Silveira O, Brazil

Simões Z, Brazil

Simpson A, Canada

Sirot L, USA

Skjaeraasen JE, Norway

Smith K (2), Germany

Snekser J, USA

Snowdon C (2), USA

Solomon N, USA

Sombke A (2), Germany

Sorensen JG, Denmark

Soto D, Canada

Spagna J, USA

Srygley RB (2), UK

Stabentheiner A (2), Austria

Starr C, Trinidad and Tobago

Stawski C, Australia

Steel L, UK

Steele M, USA

Stein K, Germany

Strausberger BM, USA

Styrsky J (2), USA

Sumbera R, Czech Republic

Swingley W, USA

Sаnchez FD, Spain

Tammaru T, Estonia

Tarpy D, USA

Tautz J (3), Germany

Taviani M, Italy

Taylor G, USA

Taylor P, UK

Taylor P, UK

Teal P (2), USA

Thomas M, USA

Thompson M, USA

Tian Z, China

Tintori A (2), Italy

Tol RSJ, UK

Tomioka K, Japan

Torto B, Kenya

Tran K, USA

Trewavas A, UK

Trotsenko Y, USA

Tsujimoto K, Japan

Turbill C, Australia

Unmack P, Australia

Utsumi S, Japan

Vacha M, Czech Republic

Vallejo-Marin M (3), UK

van der Gulik P (3), Netherlands

Van Wassenbergh S (2), Belgium

van Oudenhove L (2), France

van Volkenburgh E, USA

Van Noort S, South Africa

Vanwambeke S, Belgium

Vargo E, USA

Vences M, Germany

Verzi D, Argentina

Vianey-Liaud M, France

Victoriano P, Chile

Victorsson J, Sweden

Vital C, Mexico

Voigt C, Germany

Vuts J (2), UK

Wainwright P, USA

Wang Y, USA

Ward P, USA

Warner D (2), USA

Waser N, USA

Waterhouse J, UK

WCISLO W, Panama

Weidenhamer J, USA

Weigend M, Germany

Weil Z, USA

Weintraub P (2), Israel

Weiss M (2), USA

Wells KD, USA

White J (2), USA

White D, Canada

Whitfield J, USA

Wilder S (2), Australia

Wilkins K, USA

Wilson P, USA

Wimp GM (2), USA

Wisenden B, USA

Witalinski W, Poland

Wolff J, Germany

Wood J, UK

Woodburne M, USA

Wronski T, Germany

Wu TJ (2), USA

Xavier RS, Portugal

Xu X, China

Yang Q, China

Ye GY, China

Young C, USA

Zanno L, USA

Zayed A (2), Canada

Zhan A, China

Zöttl M (2), UK

Zurek D, USA

Zurita AE, Argentina

Zypman F, USA