Search Results - "Terhivuo, Juhani"

Dispersal and clonal diversity of North-European parthenogenetic earthworms by Terhivuo, Juhani, Saura, Anssi

“…At least 15 earthworm species are known to reproduce parthenogenetically. Most of these retain meiosis but the chromosome set is duplicated before meiosis;…”
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Engineering a future for amphibians under climate change by Shoo, Luke P., Olson, Deanna H., McMenamin, Sarah K., Murray, Kris A., Van Sluys, Monique, Donnelly, Maureen A., Stratford, Danial, Terhivuo, Juhani, Merino-Viteri, Andres, Herbert, Sarah M., Bishop, Phillip J., Corn, Paul Stephen, Dovey, Liz, Griffiths, Richard A., Lowe, Katrin, Mahony, Michael, McCallum, Hamish, Shuker, Jonathan D., Simpkins, Clay, Skerratt, Lee F., Williams, Stephen E., Hero, Jean-Marc

“…1. Altered global climates in the 21st century pose serious threats for biological systems and practical actions are needed to mount a response for species at…”
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Local land use effects and regional environmental limits on earthworm communities in Finnish arable landscapes by Nieminen, Mervi, Ketoja, Elise, Mikola, Juha, Terhivuo, Juhani, Sirén, Taisto, Nuutinen, Visa

“…In many arable soils, earthworms form the key component of the soil animal community and greatly contribute to soil quality. Our goal was to identify variables…”
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Reliability of temperature signal in various climate indicators from northern Europe by Hari, Pertti, Aakala, Tuomas, Hilasvuori, Emmi, Häkkinen, Risto, Korhola, Atte, Korpela, Mikko, Linkosalo, Tapio, Mäkinen, Harri, Nikinmaa, Eero, Nöjd, Pekka, Seppä, Heikki, Sulkava, Mika, Terhivuo, Juhani, Tuomenvirta, Heikki, Weckström, Jan, Hollmén, Jaakko

“…We collected relevant observational and measured annual-resolution time series dealing with climate in northern Europe, focusing in Finland. We analysed these…”
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The time series of flowering and leaf bud burst of boreal trees (1846–2005) support the direct temperature observations of climatic warming by Linkosalo, Tapio, Häkkinen, Risto, Terhivuo, Juhani, Tuomenvirta, Heikki, Hari, Pertti

“…The timing of spring phenological events of boreal trees, such as flowering and leaf bud burst, is controlled to a great extent by the ambient air temperature,…”
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Clone distribution of the earthworm Eiseniella tetraedra (Sav.) (Oligochaeta: Lumbricidae) across an altitudinal gradient on subarctic mountains of NW Europe by Terhivuo, Juhani, Saura, Anssi

“…In earlier studies, we have shown that clone diversity of the parthenogenetic earthworm Eiseniella tetraedra increases from the upper reaches of rivers in…”
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Clone distribution of the earthworm Eiseniella tetraedra (Sav.) (Oligochaeta: Lumbricidae) across an altitudinal gradient on subarctic mountains of NW Europe by Terhivuo, Juhani, Saura, Anssi

“…In earlier studies, we have shown that clone diversity of the parthenogenetic earthworm Eiseniella tetraedra increases from the upper reaches of rivers in…”
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Clonal diversity and morphometry in the parthenogenetic earthworm Eiseniella tetraedra (Sav.) as affected by habitat characteristics including radioactive pollution by Terhivuo, Juhani, Halmepuro, Anne-Mari, Saura, Anssi

“…Eiseniella tetraedra (Sav.) is a cosmopolitan earthworm reproducing by obligate parthenogenesis. Here, we examined whether habitat characteristics affected the…”
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Low clonal diversity and morphometrics in the parthenogenetic earthworm Octolasion cyaneum (Sav.) by Terhivuo, Juhani, Saura, Anssi

“…Enzyme electrophoresis indicated that the cosmopolitan parthenogenetic earthworm Octolasion cyaneum (Sav.) has a very low clonal variability in populations…”
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Clone diversity of Eiseniella tetraedra (Oligochaeta: Lumbricidae) along regulated and free-flowing boreal rivers by Terhivuo, Juhani, Lundqvist, Elisabeth, Saura, Anssi

“…We have sampled populations of the parthenogenetic and polyploid earthworm Eiseniella tetraedra along the Ume, Vindel and Sävar Rivers in northern Sweden. The…”
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Island biogeography of North European parthenogenetic Lumbricidae: I. Clone pool affinities and morphometric differentiation of Åland populations by Terhivuo, Juhani, Saura, Anssi

“…Genetic and morphometric differences between island (Åland) and mainland (Sweden, Finland and Estonia) populations of five parthenogenetic and ecologically…”
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Genetic and morphological variation of the parthenogenetic earthworm Aporrectodea rosea in southern Finland (Oligochaeta, Lumbricidae) by Terhivuo, Juhani, Saura, Anssi

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Provisional atlas and status of populations for the herpetofauna of Finland in 1980—92 by Terhivuo, Juhani

“…Based on 30239 records from several questionnaires and field censuses in 1980—1992 distribution maps were drawn for the amphibian and reptile species of…”
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Genic and morphological variation of the parthenogenetic earthworm Aporrectodea rosea in southern Finland (Oligochaeta, Lumbricidae) by Terhivuo, Juhani, Saura, Anssi

“…The parthenogenetic earthworm Aporrectodea rosea (Savigny) showed a wide electromorph ('clonal') heterogeneity in southern Finland with 46 'clones' in a sample…”
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Phenology of spawning for the Common Frog (Rana temporaria L.) in Finland from 1846 to 1986 by Terhivuo, Juhani

“…The onset and changes in the timing of spawning of the common frog (Rana temporaria L.) in Finland was studied through the 3888 records received through…”
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Relative regional abundance and colour morphs of the adder (Vipera berus L.), grass snake (Natrix natrix L.), slow worm (Anguis fragilis L.) and common toad (Bufo bufo L.) in Finland by Terhivuo, Juhani

“…Relative provisional abundances for the adder (Vipera berus), grass snake (Natrix natrix), slow worm (Anguis fragilis) and common toad (Bufo bufo) were worked…”
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Growth, reproduction and hibernation of Arianta arbustorum (L.) (Gastropoda, Helicidae) in southern Finland by Terhivuo, Juhani

“…Field observations and experiments were made to study the growth, reproduction and hibernation of Arianta arbustorum in southern Finland where the species…”
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Morphological and morphometric variation of the parthenogenetic earthworm Dendrobaena octaedra (Sav.) (Oligochaeta, Lumbricidae) in eastern Fennoscandia by Terhivuo, Juhani

“…The morphological and morphometric variability of the parthenogenetic earthworm D. octaedra was surveyed in relation to environmental and geographical…”
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The Finnish Lumbricidae (Oligochaeta) fauna and its formation by Terhivuo, J. (Helsinki Univ. (Finland). Zoological Museum)

“…Faunistical recording during the past c. 100 years shows that the Finnish Lumbricidae fauna comprises sixteen species, viz., Allolobophora chlorotica,…”
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The Lumbricidae (Oligochaeta) of southern Finland: species assemblages, numbers, biomass and respiration by Terhivuo, J. (Helsinki Univ. (Finland). Zoological Museum)

“…Coniferous forests, shore alder thickets, deciduous forests, shores and meadows were sampled in three regions in S Finland (60°N) to survey the earthworm…”
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