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Drastic population size change in two populations of the Golden-striped salamander over a forty year period - are eucalypt plantations to blame? Naturalis
Arntzen, J.W..
Over the last half century the Iberian peninsula has seen the large scale planting of exotic gum trees (Eucalyptus sp.) therewith reducing space for native wildlife. An additional effect of the gum tree plantations may be the lowering of the water table in adjacent streams, to which amphibian species with a larval niche in the running sections of small streams would be especially susceptible. In northwestern Iberia that niche is occupied by the Golden-striped salamander, Chioglossa lusitanica. I here report on the demographic trends of two C. lusitanica populations over a forty year period, in two areas of one mountain range near Porto in northwestern Portugal. In both areas advantage was taken of the migration pattern of C. lusitanica to sites for...
Tipo: Article / Letter to the editor Palavras-chave: Amphibian decline; Chioglossa lusitanica; Demographic modelling; Gum tree; Iberia; Monoculture; Portugal; Urodela; Vortex; 42.82.
Ano: 2015 URL: http://www.repository.naturalis.nl/record/569285
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A black, non-troglomorphic amphibian from the karst of Slovenia: Proteus anguinus parkelj n. ssp. (Urodela: Proteidae) Naturalis
Sket, B.; Arntzen, J.W..
A morphologically distinct cavernicolous salamander Proteus anguinus from southeastern Slovenia (Bela Krajina) is described as P. a. parkelj ssp. n. It differs from P. a. anguinus in a dark pigmentation, fully developed eyes, a skull with broader and shorter bones and fewer teeth, a voluminous jaw musculature that gives the head a bulky appearance, a proportionally longer trunk with a higher number of vertebrae, shorter extremities, and a shorter tail. Most of these traits are considered to be plesiomorphic character states. An allozyme analysis over 40 loci has shown the new dark pigmented taxon to be genetically similar to a white and troglomorphic neighbouring population from Stična (DNei = 0.23). Both populations in turn are genetically dissimilar to a...
Tipo: Article / Letter to the editor Palavras-chave: Urodela; Proteus; Taxonomy; Morphology; Allozyme analysis; Ecology; Distribution.
Ano: 1994 URL: http://www.repository.naturalis.nl/record/503865
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