Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Springtails"”.
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Population genetic structure of Antarctic springtails (Collembola) and New Zealand damselflies (Odonata)
Since Darwin (Darwin, 1859), the process of speciation and maintenance of biological diversity has caused intensive debate in the scientific and non-scientific communities alike. The ability to analyze differences in the molecular structure of enzymes and DNA sequences has provided an extremely …
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The influence of vicariance and dispersal on the diversification and evolution of springtails (collembola)
… and maintenance of biodiversity in springtails (Collembola). This class of tiny, wingless insect-like hexapods includes some of the most abundant (and perhaps, most diverse) arthropods on earth. They have colonized, diversified, and adapted to nearly every terrestrial habitat from …
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Contribuição para o conhecimento de Collembola entomobryomorpha (Insecta) do Parque Nacional da Tijuca, Rio de Janeiro, Brasil
Taxonomic and distributional study of the springtails belonging to the suborder Entomobryomorpha from Parque Nacional da Tijuca is presented. Sixty samples with 31.403 specimens were collected at eleven different localities from February 1979 through February 1980. Twenty species, incluing one not …
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Living in the moss. Mesofaunal communities of Racomitrium lanuginosum in Icelandic rangelands
… excluded for seven years. Mesofauna (mites and springtails) were extracted from the samples and compared between fenced and open control plots. Additional data from the sites showed that after the grazing exclusion period, moss depth was significantly lower in control plots that had been …
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PLANT AND ARTHROPOD COMMUNITIES OF ALPINE ICE-RELATED LANDFORMS: ECOLOGICAL AND BIOGEOGRAPHIC IMPORTANCE
… communities. Study 3.3 focuses on glacial springtails and regards the description of a new species of ice-dwelling springtail from Calderone glacier (3.3, Valle et al. 2021). Studies 3.4-3.5 (Valle et al. 2020, Ornaghi et al. submitted) analyse the efficacy of cryophilic ground beetles …
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Taxonomia e Distribuição de Collembola Poduromorpha da Restinga de Itaipuaçu, Maricá, RJ
… ridge and swamp area. From the 14.134 collected springtails, 5.556 belonged to the Order Poduromorpha, distributed among 3 families, 6 subfamilies, 15 genera and 20 species. The detailed morphological study of these taxa enabled to recognize six new species. The geographical distribution of some …
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Taxonomia e distribuição do gênero Isotomiella Bagnall, 1939 (Collembola, Isotomidae) na Floresta da Tijuca, Rio de Janeiro, RJ, Brasil
… made in litter and soil, totaling about 18.000 springtails, from which 3.552 belong to the genus Isotomiella. Morphological studies enabled the description of 25 species, 15 of them new to science. The distribution of 6 taxa was enlarged. A representative picture of the most abundant, frequent …
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The effects of invasive knotweed (Fallopia japonica) on invertebrate communities in western New York
… seasonal. However, some invertebrates, such as springtails, were positively affected by knotweed in one or more seasons. We also found that Japanese knotweed consistently had strong negative effects on flying invertebrates, and very few effects on ground-dwelling ones. Our research demonstrates …
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To study the fitness of Bacillus thuringiensis to survive in natural and artificial, terrestrial ecosystems
… showing moderate level of toxicity against these springtails.
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Flame and fodder: how fire and grazing shape arthropod communities in the Okavango Delta
… four terrestrial arthropod groups (ants, wasps, springtails and spiders) in burnt and grazed sites, 2) investigate whether burning or grazing have impacts on arthropod diversity, in terms of species richness and abundance, 3) provide a starting point dataset to monitor the impact of disturbances …
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Upland grassland agri-environment impacts on invertebrate biodiversity
… dominant taxa, Oribatid mites and Collembola springtails. Aerial insect functional abundance and diversity were mainly driven by landscape scale habitat coverage effects rather than agricultural management, though agri-environment scheme management had an effect on some functional groups. The …
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Belowground impacts of regenerative agriculture in a South African seed production system
… area. These included ants, beetles, spiders, and springtails. Soil fauna were sampled every two months for a year, using pitfall traps. Differences in species richness and abundance of the four study taxa were assessed in relation to agricultural treatment, sites, crop lines, and sampling times. …
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The resilience of Polar Collembola to climate change
… than any other on earth. Globally, Collembola (springtails) are among the most abundant and widely-distributed arthropods and are key components of species-poor polar ecosystems. Understanding the resilience of polar collembola to climate change is therefore an urgent research priority. Here we …
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Beurteilung der Lebensraumfunktion von Böden anhand von Bodenwerten und ökotoxikologischen Labortests
… of ecotoxicological tests with earthworms and springtails as an example. First, dose-response tests were performed with zinc nitrate and tributyltin oxide in nine natural soils and OECD artificial soil and second, six contaminated soils from different legacy sites were assessed. Earthworm and …