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André van Proosdij

Ir. A.S.J. (André) van Proosdij, PhD candidate - Biodiversity Dynamics


Email: andre.vanproosdij@naturalis.nl
Phone: +31 (0)6 21 84 26 10
Room number: Darwinweg 2


Research interest

PhD study 2010-2014 - What determines plant species diversity in Central Africa?

Knowledge about the distribution of biological diversity is essential for conservation priority settings. Therefore, reliable and efficient methods to infer patterns of species diversity are crucial. Especially in low data regions such as the tropics, the use of Species Distribution Modelling (SDM) applied to presence-only data has important advantages over Species Sampling Relationship (SSR) and Species Area Relationship (SAR) methods or intensive field inventories. However, currently SDM methods cannot be applied to rare species with few data points, nor is the effect of dispersal limitations incorporated in the models.

We will apply newly developed SDM methods, and include methods to correct for dispersal limitation, to infer current, past, and future patterns of species richness and weighted rareness in the botanically rich Central-African country of Gabon. We identify areas of high endemism and high species diversity existing today, in the past, and in the future. These results will help addressing the question what determines species richness in tropical African forests.

The main questions we address include:

  • What is the minimum number of data points needed to generate a reliable SDM?
  • Can we develop new methods to model the distribution of rare species by applying environmental constraints based on phylogenetic niche conservatism?
  • What is the effect of dispersal limitations on Gabonese diversity patterns?
  • What is the quantitative controbution of both rare and common species on diversity patters in Gabon?
  • Do diversity patterns based on SDM corroborate current hypothesis on Last Glacial Maximum forest refugia in Gabon?

Flora of Aruba, Bonaire, Curaçao, Saba, St. Eustatius, and St. Maarten

The flora of Aruba, Bonaire and Curaçao (former Netherlands Antilles) contains 566 indeginous and naturalized species. These are described in the 'Zakflora' (pocket flora), of which the original first 2 editions were written by Frater Arnoldo. After his death in 1981 he left a manuscript for a new edition. Prof. A.L. Stoffers worked on it, but also was unable to finish it. From 1998-2001 I updated and expanded the manuscript resulting in the 3rd edition.

The 4th edition was released on September 27th 2012. In this latest, completely revised edition, 29 new species are included in the text, the APG classification is applied, and all species names are checked for synonymy. For each species the original as well as the naturalized worldwide distribution is added. A new species look-up table is added too. This 4th edition was released on September 27th 2012 and is published by Uitgeversmaatschappij Walburg Pers, see www.walburgpers.nl 


gabon, flora, biodiversity, botany, cape floristic region, species distribution models, invasive species, africa, hortus botanicus, guianas, the netherlands, st. maarten, nederland, st. eustatius, rainforest, spatial diversity, aquatic plants, bes-eilanden, nederlandse antillen, aruba, botanic garden, netherlands antilles, curaçao, saba, invasives, bonaire, systematics, europe

Current research topics

Under construction.


Under construction.



Under construction.

Available student projects



Journals SCI, peer-reviewed

Proosdij A.S.J. van, Sosef M.S.M., Wieringa J.J., Raes N. 2016. Minimum required number of specimen records to develop accurate species distribution models. Ecography 39: 542-552.
Go to website (DOI)

Proosdij A.S.J. van, Raes N., Wieringa J.J., Sosef M.S.M. 2016. Unequal Contribution of Widespread and Narrow-Ranged Species to Botanical Diversity Patterns. PLOS ONE 11: e0169200.
Go to website (URI)


Journals SCI, peer-reviewed

Wieringa J.J., Mackinder B.A., Proosdij A.S.J. van 2013. Gabonius gen. nov. (Leguminosae, Caesalpinioideae, Detarieae), a distant cousin of Hymenostegia endemic to Gabon. Phytotaxa 142: 15-24.
Go to website (DOI)


Authored books

Proosdij A.S.J. van 2012. Arnoldo's Zakflora - wat in het wild groeit en bloeit op Aruba, Bonaire en Curaçao. 4 320 p. Walburg Pers, Zutphen. ISBN 9789057301629.


Authored books

Proosdij A.S.J. van 2007. Flora of the Guianas, Series A (24): 7. Hernandiaceae, 8. Chloranthaceae, 9. Piperaceae. Series A: Phanerogams 24 214 p. RBG, Kew. ISBN 9781842461846.

Chapters in books

Proosdij A.S.J. 2007. Kruidenier aan de Amstel – de Hortus volgens Johannes Snippendaal (1646). Amsterdam University Press,


Authored books

DeFilipps R.A., Maina S.L., Proosdij A.S.J. van, Duno de Stefano R., Koek-Noorman J., Détienne P. 2003. Flora of the Guianas. / Series A, Phanerogams. Fascicle 22, 27. Phytolaccaceae (+ remarks 28. Achatocarpaceae) ; 29. Nyctaginaceae ; 30. Aizoaceae ; 32. Chenopodiaceae ; 33. Amaranthaceae ; 34. Portulacaceae ; 35. Basellaceae ; 36. Molluginaceae ; 37. Caryophyllaceae ; 54. Sarraceniaceae ; 55. Droseraceae ; including Wood and Timber. Flora of the Guianas Series A 22 Royal Botanic Garden Kew, ISBN 1842460692 9781842460696.


Authored books

Proosdij A. van 2001. Arnoldo's Zakflora - wat in het wild groeit en bloeit op Aruba, Bonaire en Curaçao. Walburg Pers, Zutphen.