Consulta: creatorFacets:"Willemse, L.P.M."
Registros recuperados: 3
Data/hora: 12/06/2024 05:15:19

A discussion of the Ehrharteae (Gramineae) with special reference to the Malesian taxa formerly included in Microlaena
Provedor de dados: 16
Autores: Willemse, L.P.M.
The genera Microlaena R. Br., Petriella Zotov, and Tetrarrhena R. Br. are included in Ehrharta Thunb. (Gramineae-Ehrharteae), which necessitates four new combinations in the latter. In Malesia Ehrharta is represented by two taxa originally included in Microlaena: E. diplax F. v. Muel. var. giulianettii (Stapf) L. P. M. Willemse (M. giulianettii Stapf) and E. stipoides Labill. var. stipoides [M. stipoides (Labill.) R. Br. var. stipoides]. Descriptions of and notes on these taxa are given.
Tipo: Article / Letter to the editor
Ano: 1982
URL: http://www.repository.naturalis.nl/record/525192

Georeferencing specimens by combining digitized maps with SRTM digital elevation data and satellite images: a Bornean case study
Provedor de dados: 16
Autores: Raes, N.; Mols, J.B.; Willemse, L.P.M.; Smets, E.F.
For numerous scientific purposes collection records need to be georeferenced. Although the geographic coordinates of many of the collection localities are available in gazetteers, especially collections from tropical areas of the world are still not georeferenced. In an attempt to georeference these localities for Indonesian Borneo we used digitized old maps which were georegistered with SRTM digital elevation data, and Landsat 7- and JERS-1 SAR radar satellite images. This enabled us to georeference 2 577 additional collections from Indonesian Borneo, belonging to 1 744 taxa, which were collected at 134 previously not georeferenced localities. This applied methodology enables researchers to georeference their historical collections for biodiversity,...
Tipo: Article / Letter to the editor
Palavras-chave: Borneo; Georeferencing; Georegistration; Historical map; JERS-1 SAR; Landsat; SRTM digital elevation data.
Ano: 2009
URL: http://www.repository.naturalis.nl/record/524933

Checklist of woody plants of Sulawesi, Indonesia
Provedor de dados: 16
Autores: Keßler, P.J.A.; Bos, M.M.; Sierra Daza, S.E.C.; Kop, A.; Willemse, L.P.M.; Pitopang, R.; Gradstein, S.R.
Sulawesi comprises of about 182,870 km² of land and fewer botanical specimens (about 23 specimens per 100 km², Whitten et al., 1987) have been collected here than in any other major island in Indonesia. This island is up to date botanically poorly explored and according to Van Steenis (1950) about 32,500 specimens of plants were recorded, the number is probably only a rough estimation and certainly in the precomputer era not based on real specimens. Within the framework of STORMA (Stability of Rainforest Margins) we analyzed the vegetation in several plots of one hectare of different land use systems at the Lore Lindu National Park, Central Sulawesi, Indonesia. Rapidly we were faced with the problem that the identification of the mostly sterile trees would...
Tipo: Article / Letter to the editor
Ano: 2002
URL: http://www.repository.naturalis.nl/record/526385