EDUCATION
1960-1968: High School, Tilburg, The Netherlands.
1968-1974: University of Utrecht and University of Amsterdam, Masters in Biology: primatology, tropical ecology, plant taxonomy.>
1980: Doctoral thesis in Ecology and Nature Conservation at the Universities of Wageningen and Amsterdam, entitled: Habitat Preferences, Diet, Feeding Strategy and Social Organization of the Black Spider Monkey (Ateles paniscus Linnaeus 1758) in Suriname.

RESEARCH EXPERIENCE
1971: Reconnaissance trip to explore in the rain forests of the Oriente (Amazon), east Ecuador. 1976-1979: Ph.D. fieldwork in central Suriname, South America: synecology of eight primates of Suriname, and autecology of the red-faced black spider monkey, Ateles paniscus.
1973-1975: Research on fruits and seeds and publication of the two-volume book “Surinaams Vruchtenboek”, illustrations and descriptions of 1,400 species of wild fruits from the rain forests of Suriname.
1981-1985: Compilation and publication of the book “A Field Guide to the Fruits of the Guianan Flora”, including illustrations and descriptions of about 2,000 species of wild fruits of the rain forests of the Guayanan Shield.
1983-1985: Post-doctoral field research in central French Guiana on plant-animal relationships in seed dispersal and seed/seedling predation ecology.
1986-2003: Contracted by the Brazilian Ministry of Science and Technology as senior scientist at the National Institute for Amazonian Research (INPA), Manaus-Amazonas, Brazil.
1989-1994: Setting up and managing the Center for the Rehabilitation and Re-introduction of Endangered Wildlife in the federal Rio Cuieiras Nature Reserve – all kinds of animals, in particular monkeys, confiscated from the pet trade by Ibama, were socialized and rehabilitated as social groups in the local rain forest, and sometimes much later re-introduced in their natural habitat.
1994-1997: Producing four wildlife documentaries for Survival Anglia Ltd, UK, both in remote places and in my own Rehabilitation and Breeding Center for Endangered Animals near the city of Manaus. “Creatures of the Magic Waters”; “Gremlins: Faces in the Forest”; “Web of the Spider Monkey”; “Our World – Following the Lives of the Rare Spider Monkey Group in Amazonia”; Our World - “Jaguar – Eater of Souls”. All videos to be seen on my YouTube channel @mvanroos.
1996-2003: Surveys of the megafauna and flora (in particular native fruits) along the major tributaries of the Amazon River to study biogeography and phylogeography (collecting DNA from dung of free-ranging monkeys and other megafauna, and from leaves of certain trees), testing Alfred Wallace’s hypothesis that the major Amazonian rivers form important geographic barriers in the evolution and radiation of non-volant mammals and birds. This long-term project was sponsored by the Virginia-based Margot Marsh Biodiversity Foundation and Conservation International.
1996: Discovery of a mammal new to science, which I described in 1998 as Callithrix humilis, the second smallest monkey in the world, and later (2003) as a whole new primate genus: Callibella humilis.
1996-2002: Publications in the series “A Guide to the Fruits of the Amazonian Rain Forest”, including the families Myristicaceae, Sapotaceae, Leguminosae, Lecythidaceae, Annonaceae, and Moraceae, illustrated in black-and-white line drawings, digital pictures and water colour paintings, a series sponsored by Conservation International, Margot Marsh Biodiversity Foundation, and the Amazon Conservation Team. Self-published on www.amazon.com – books by author Marc van Roosmalen.
1998-2001: A number of plant collecting trips to Suriname in order to compile a book on the “Lianas, Scandent Shrubs and Hemi-Epiphytes of Suriname, and their Use in Traditional Healing”, illustrated with water colour paintings and digital pictures of the plants growing in the wild. This project was sponsored by the Virginia-based Amazon Conservation Team.
1999: Founding the Amazon Association for the Preservation of High Biodiversity Areas (AAPA), elected as President. This NGO was founded to enable me to purchase legal land titles of pristine rain forest in areas harbouring extremely high biodiversity and/or animals and plants new to science. Through the Forestry Department (IBAMA) these areas were then supposed to be transformed in Private Natural Heritage Reserves that would have the most rigid, perpetual status of preservation in Brazil by means of the Environmental Law on RPPNs published in the Diario Oficial of 1996.
2000: Publication of two recently discovered Amazonian marmoset monkeys, Mico (Callithrix) manicorensis and Mico (Callithrix) acariensis, from the Rios Madeira/Tapajos interfluve.
2002: The purchase and creation of two future RPPNs: 1/ the Lago Uauacu Private Nature Reserve – over 20,000 hectares situated round the 40 km long Uauacu Lake at the left bank of the lower Rio Purus, including a rich mosaic of forest habitats where 15 species of primates co-exist, the highest monkey diversity in the New World and perhaps on the planet; and 2/ the HRH Prince Bernhard Nature Reserve, a 7,500 hectares property of virgin terra firme and igapo forests along the left bank of the lower Rio Aripuana (a rightbank clear-water tributary of the white-water Rio Madeira), purchased by the AAPA with donations of HRH Prince Bernhard of the Netherlands and protecting viable populations of the new species of titi monkey (Callicebus bernhardi) aside of a number of other monkeys and terrestrial as well as aquatic megafauna elements hitherto unknown to science.
2002: Publication of a review on the titi monkeys, genus Callicebus, including the descriptions of two species new to science: Callicebus bernhardi and Callicebus stephennashi.
2003: Publication of the dwarf marmoset formerly described as Callithrix humilis but this time as a new genus, Callibella humilis, including its molecular phylogenetic status.
2004: Publication of a new tree species, member of the Brazil Nut family of Lecythidaceae, Lecythis oldemani, in Liber Amicorum honoring Prof. Dr. Ir. Roelof A.A. Oldeman.
2005: Submitting a revised paper to Nature entitled: A New Species of Living Peccary (Mammalia: Tayassuidae) from the Brazilian Amazon, accepted July 2006 for publication in Bonner zoologischen Beitrage.
November 2008: The publication in Dutch of popular-scientific book "Barefoot through the Amazon: On the Path of Evolution" Uitgeverij Bert Bakker/Prometheus Amsterdam
ISBN 9789035133105
2009: Publication in Dutch of popular-scientific booklet “Darwin in een notendop” Uitgeverij Bert Bakker/Prometheus Amsterdam ISBN 9789035134188
2010: Publication in Dutch of popular-scientific book “Tropenkolder – Belevenissen in de jungle van een “Held van de Planeet”” Uitgeverij Bert Bakker/Prometheus Amsterdam ISBN 9789035135550

SPECIAL SKILLS AND INTERESTS
Nature photography and filming; Driving Amazon riverboats; Rain forest hiking alone with the help of a GPS device; Scientific consultancies for nature (conservation) documentaries made for Dutch TV companies (VPRO, AVRO, TROS), German (GEO, NDR, ZDF, ARTE), Japanese (NHK), English (BBC,Partridge, Survival Anglia), American (Discovery, National Geographic), Italian (RAI 4), Brazilian (Fantastico, Globo Reporter), and others; History of human habitation on the Latin American continent; Archaeology; Terra preta phenomenon, how stone-age Indians made these fertile anthrosols, when and where; Traditional healing by authentic Indian pajes or shamans, the doctrine of signature, and pharmacopoeia (medicinal plants and animals). Fluent in Dutch, English, Portuguese, French, German and taki-taki, good understanding of Spanish.

Roosmalen, M.G.M. van. 1977. Surinaams Vruchtenboek, Vol. I & II, University of Utrecht Press, Utrecht, Holland. 556 p.
Roosmalen, M.G.M. van & R.A. Mittermeier. 1978. The Monkeys of Suriname, Suralco Magazine, Paramaribo, Suriname. 10 p.
Roosmalen, M.G.M. van, Coimbra-Filho, A.F. & R.A. Mittermeier. 1978. Callitrichids in Brazil and the Guianas: current conservation status and potential biomedical research, in: Marmosets in Experimental Medicine, N. Gengozian & F. Deinhardt (eds.): 20-29.
Roosmalen, M.G.M. van, Coimbra-Filho, A.F. & R.A. Mittermeier. 1978. Conservation Status of Wild Callitrichids, in: Biology and Behavior of Marmosets, Proceedings of the Marmoset Workshop, Eigenverlag Rothe, Gottingen, Germany:17-39.
Roosmalen, M.G.M. van. 1979. The Ecology of the Black Spider Monkey. ZWO Yearbook, The Hague, Holland.
Roosmalen, M.G.M. van. 1980. Habitat Preferences, Diet, Feeding Strategy and Social Organization of the Black Spider Monkey (Ateles paniscus) in Suriname. Ph.D. Thesis at the Agricultural University of Wageningen, Holland and published as Report 80/13, Institute for Nature Management Press, Leersum, Holland. 175 p.
Roosmalen, M.G.M. van, Mittermeier, R.A. & K. Milton. 1981. The Bearded Sakis, Genus Chiropotes, in: Ecology and Behavior of Neotropical Primates, Vol.I, A.F. Coimbra-Filho & R.A. Mittermeier (eds.), Academia Brasileira de Ciencias, Rio de Janeiro, Brazil: 419-441.
Roosmalen, M.G.M. van, Mittermeier, R.A. & D.B. Buchanan. 1981. The Saki Monkeys, Genus Pithecia, in: Ecology and Behavior of Neotropical Primates, Vol. I, A.F. Coimbra-Filho & R.A. Mittermeier (eds.), Academia Brasileira de Ciencias, Rio de Janeiro, Brazil: 391-417.
Roosmalen, M.G.M. van & R.A. Mittermeier. 1981. Preliminary Observations on Habitat Utilization and Diet in Eight Surinam Monkeys. Folia Primatologica 36: 1-39.
Roosmalen, M.G.M. van & R.A. Mittermeier. 1981. A Synecological Study of Surinam Monkeys, in: Advances in Herpetology and Evolutionary Biology, Cambridge, Mass., USA: 521-535.
Roosmalen, M.G.M. van & R.A. Mittermeier. 1982. Conservation of Primates in Suriname. International Zoo Yearbook, Vol. 22: 56-69.
Roosmalen, M.G.M. van, Mittermeier, R.A., Konstant, W.R., Ginsberg, H. & E. Cordeira da Silva. 1983. Further Evidence of Insect Consumption in the Bearded Saki Monkey, Chiropotes satanas chiropotes. Primates, 24(4): 602-606.
Roosmalen, M.G.M. van. 1984. Subcategorizing Foods in Primates, in: Food Acquisition and Processing in Primates, Chivers, D.J., Wood, B.A. & A. Bilsborough (eds.), Plenum Publ. Corp., Chicago, USA: 167-176.
Roosmalen, M.G.M. van. 1985. A Guide to the Fruits of the Guianan Flora. University of Utrecht Press/Veenman, Wageningen, Holland. 517 p.
Roosmalen, M.G.M. van. 1985. Habitat Preferences, Diet, Feeding Behavior and Social Organization of the Black Spider Monkey (Ateles paniscus Linnaeus 1758) in Suriname. Acta Amazonica, 15(3-4), Suplemento, Manaus-AM, Brazil. 238 p.
Roosmalen, M.G.M. van & L.L. Klein. 1988. The Spider Monkeys, Genus Ateles, in: Ecology and Behavior of Neotropical Primates, Vol. II, Mittermeier, R.A., Rylands, A.B., Coimbra-Filho, A.F. & G.A.B. da Fonseca (eds.), World Wildlife Fund, Washington, DC, USA: 455-538.
Roosmalen, M.G.M. van, Baal, F.L.J. & R.A. Mittermeier. 1988. Primates and Protected Areas in Suriname. Oryx: 7-15.
Roosmalen, M.G.M. van, Fleagle, J.G. & R.A. Mittermeier. 1989. Diet of the Northern Bearded Saki
(Chiropotes satanas chiropotes): a Neotropical Seed Predator. American Journal of Primatology 14: 11-35.
Roosmalen, M.G.M. van & C.E. Peres. 1996. Avian Dispersal of "Mimetic Seeds" of Ormosia lignivalvis (Leguminosae, Papilionoideae) by Terrestrial Granivores: Deception or Mutualism? Oikos 75: 1.
Roosmalen, M.G.M. van, Bardales, M. del Pilar Diaz & O.M. Garcia da Cruz Gomes. 1996. Frutos da Floresta Amazonica. Parte I: Myristicaceae. Acta Amazonica 26(4): 209-264.
Roosmalen, M.G.M. van & T. van Roosmalen. An Eastern Extension of the Geographical Range of the Pygmy Marmoset, Cebuella pygmaea. Neotropical Primates 5: 3-6.
Roosmalen, M.G.M. van , Roosmalen, T. van, Mittermeier, R.A. & G.A.B. da Fonseca.1998. A New and Distinctive Species of Marmoset (Callitrichidae, Primates) from the Lower Rio Aripuana, State of Amazonas Central Brazilian Amazonia. Goeldiana 22: 1- 27.
Roosmalen, M.G.M. van & O.M. Garcia da Cruz Gomes. 2000. Frutos da Floresta Amazonica. Parte II: Sapotaceae. Acta Amazonica 30(2): 187-289.
Roosmalen, M.G.M. van, Roosmalen, T. van, Mittermeier, R.A. & A.B. Rylands. 2000. Two New Species Marmoset, Genus Callithrix Erxleben, 1777 (Callitrichidae, Primates), from the Tapajos/Madeira Interfluve, South Central Amazonia, Brazil. Neotropical Primates 8(1): 2-19.
Roosmalen, M.G.M. van, 2000. A Rain-Forest Odyssey. Time Magazine's Heroes for the Planet/Wildlife. Time Feb. 28. Article by T. McGirk.
Roosmalen, M.G.M. van, Voss, R.S. & M.N.F. da Silva. 2001. Revisionary Notes on Neotropical Porcupines (Rodentia: Erethizontidae). 2. A Review of the Coendu vestitus Group with Descriptions of Two New Species from Amazonia (Coendu roosmalenorum sp.nov.). Novitates, Amer.Mus.Nat.Hist., NY, USA.
Roosmalen, M.G.M. van, Roosmalen, T. van & R.A. Mittermeier. 2002. A Taxonomic Review of the Titi Monkeys, Genus Callicebus Thomas, 1903, with the Description of Two New Species, Callicebus bernhardi and Callicebus stephennashi, from Brazilian Amazonia. Neotropical Primates 10 (Sppl.), June: 1-53.
Roosmalen, M.G.M. van & T. van Roosmalen. 2003. The Description of a New Marmoset Genus, Callibella (Callitrichinae, Primates), Including its Molecular Phylogenetic Status. Neotropical Primates 11(1), April: 1- 12.
Roosmalen, M.G.M. van, 2004. A new species of Lecythidaceae, Lecythis oldemani sp. nov., from Amazonia. Liber Amicorum: 25 Jaar een “Boom der Vrijheid” (ISBN 90-804443-9-1).
Van Roosmalen, M. G. M. 2008. Blootsvoets door de Amazone – De Evolutie op het Spoor. Uitg. Bert Bakker, Amsterdam: 1-408.
Van Roosmalen, M. G. M. 2009. Darwin in een Notendop. Uitg. Bert Bakker, Amsterdam: 1-120.
Van Roosmalen, M. G. M. 2010. Tropenkolder – Belevenissen in de Jungle van een Held voor de Planeet. Uitg. Bert Bakker, Amsterdam: 1-312.
Van Roosmalen, M. G. M. 2013a. Barefoot through the Amazon – On the Path of Evolution. Amazon.com paperback & Kindle e-book: 1-500.
Van Roosmalen, M. G. M. 2013b. Distributions and Phylogeography of Neotropical Primates – A Pictorial Guide to All Known New-World Monkeys. Amazon.com paperback & Kindle e-book: 1-69.
Van Roosmalen, M. G. M. 2013c. A Shaman’s Apprentice – Traditional Healing in the Brazilian Amazon. Amazon.com paperback & Kindle e-book: 1-155.
Van Roosmalen, M. G. M. 2014a. Black Gold – Pre-Columbian Farming on Terra Preta Anthrosol in the Amazon. Amazon.com paperback & Kindle e-book: 1-157.
Van Roosmalen M. G. M. 2014b. On the Origin of Allopatric Primate Species and the Principle of Metachromic Bleaching – Discrimination of Deviant Adolescent Males Driving Allopatric Speciation in Territorial Social Primates. Amazon.com paperback & Kindle e-book: 1-71.
Van Roosmalen, M. G. M. 2014-2020. A Pictorial Guide to the Wild Fruits from the Amazon Vols. I-VIII. Amazon.com paperback & Kindle e-book: 1-2,000.
Van Roosmalen, M. G. M. 2015a. Live from the Amazon. Amazon.com paperback & Kindle e-book: 1-440.
Van Roosmalen, M. G. M. 2015b. Hotspot of New Megafauna Found in the Central Amazon of Brazil: The Lower Rio Aripuanã Basin. Biodiversity Journal 6(1): 219-244.
Van Roosmalen, M. G. M. 2017. Waarom de Buren Nooit Deugen – Soortvorming bij Alle Territoriale Sociale Primaten. Uitg. Prometheus, Amsterdam: 1-320. ISBN 9789044634921.
Van Roosmalen, M. G. M. 2020. Live from the Amazon – On the Path of Evolution; A Personal Account of Amazonian Human and Natural History: 1-670. LAMBERT Academic Publishing ISBN 9786202522069.
Van Roosmalen, M. G. M. 2020. Man’s Territorial Primate Factor – Evolutionary Roots of Tribalism in Human Societies: 1-254. LAMBERT Academic Publishing ISBN 9786200536716.
Van Roosmalen, M. G. M. 2021. A Pictorial Field Guide to the Woody Plants of the Amazon. Vols. I-IX: 1-2,250. Scholars´ Press Dodo Books Indian Ocean Ltd, OmniScriptum S.R.L. Publishing group.
Van Roosmalen M. G. M. 2025. Human’s Male-Territorial Primate Factor – Evolutionary Roots of Tribalism in Human Societies: 1-254. LAMBERT Academic Publishing.
Van Roosmalen, M. G. M. and Van der Vlist, F. 2015. A New Species of Living Manatee (Mammalia Trichechidae) from the Rio Aripuanã Basin, Central Brazilian Amazon – Shallow Clear-Water Adapted Dwarf Manatee is on the Verge of Extinction. Biodiversity Journal 6(1): 230-240.
Van Roosmalen, M. G. M. and Van Roosmalen, T. 2016. On the Origin of Allopatric Primate Species. Biodiversity Journal, March 2016, 7(1) Suppl.: 1-200.

ResearchGate publications:
https://www.researchgate.net/scientific-contributions/Marc-G-M-van-Roosmalen-2080001129/publications/2#articles