Search publications of the members of the Royal Belgian institute of natural Sciences
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New spider species (Araneae) from the Galapagos Islands (Ecuador)
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Forecasting fish distribution along stream networks: brown trout (Salmo trutta) in Europe
- Aim Species inhabiting fresh waters are severely affected by climate change and other anthropogenic stressors. Effective management and conservation plans require advances in the accuracy and reliability of species distribution forecasts. Here, we forecast distribution shifts of Salmo trutta based on environmental predictors and examine the effect of using different statistical techniques and varying geographical extents on the performance and extrapolation of the models obtained. Location Watercourses of Ebro, Elbe and Danube river basins (c. 1,041,000 km2; Mediterranean and temperate climates, Europe). Methods The occurrence of S. trutta and variables of climate, land cover and stream topography were assigned to stream reaches. Data obtained were used to build correlative species distribution models (SDMs) and forecasts for future decades (2020s, 2050s and 2080s) under the A1b emissions scenario, using four statistical techniques (generalised linear models, generalised additive models, random forest, and multivariate adaptive regression). Results The SDMs showed an excellent performance. Climate was a better predictor than stream topography, while land cover characteristics were not necessary to improve performance. Forecasts predict the distribution of S. trutta to become increasingly restricted over time. The geographical extent of data had a weak impact on model performance and gain/loss values, but better species response curves were generated using data from all three basins collectively. By 2080, 64% of the stream reaches sampled will be unsuitable habitats for S. trutta, with Elbe basin being the most affected, and virtually no new habitats will be gained in any basin. Main conclusions More reliable predictions are obtained when the geographical data used for modelling approximate the environmental range where the species is present. Future research incorporating both correlative and mechanistic approaches may increase robustness and accuracy of predictions.
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Carl Gottfried Semper (1832-1893) and the location of his type specimens of sea cucumbers
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Holothuria (Selenkothuria) parvispinea n. sp. (Echinodermata, Holothuroidea, Holothuriidae) with key to the sub-genus Selenkothuria
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Redescription of Psolus tessellatus Koehler, 1896 (Echinodermata, Holothuroidea) with neotype designation
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Asilidae of the Kuzikus Wildlife Reserve (Namibia)
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A new species of the cicada genus Semia Matsumura, 1917 (Hemiptera: Cicadidae) from Vietnam, with a key to the species of the genus
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The Oriental lanternfly genus Scamandra: a new species and taxonomical notes (Hemiptera: Furgoromorpha: Fulgoridae)
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Phamartes coronatus gen. nov. sp. nov. a new genus and species of stick insect from Bach Ma national Park, central Vietnam (Phasmida, Diapheromeridae, Necrosciinae)
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Two new species of Sogana Matsumura, 1914 (Hemiptera: Fulgoromorpha: Tropiduchidae) with a identification key to the Hitherto known species from Vietnam
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Er waren eens ... de bijen
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Les abeilles, indicatrices des écosystèmes terrestres
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De mierenfauna van het militair domein te Tielen - deelgebied Tielenkamp
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First record of the myrmecophilous silverfish Atelura formicaria Heyden, 1855 in Belgium (Zygentoma: Nicoletiidae)
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Resultaten van een Malaisevalcampagne langs een brakke sloot in de Jeronimuspolder (Sint-Laurens, Oost-Vlaanderen, België)
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De Keverbank te halen Rotem: succesvolle start van een voor Vlaanderen unieke Beheersovereenkomst
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Pheidole megacephala (Fabricius 1793) (Hymenoptera: Formicidae) a new invasive ant in the Galapagos Islands
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Précision sur la répartition de Pachyrhinus lethierryi (Desbrochers, 1875) en Belgique (Coleoptera: Curculionidae: Entiminae)
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A new Aegosomatini from Borneo: Aegosoma musaamani n.sp. (Coleoptera, Cerambycidae, Prioninae)
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Description of a new genus and species of the tribe Aegosomatini Thomson, 1861 from Vietnam (Coleoptera, Cerambycidae, Prioninae)
