Essays about: "Coleoptera"
Showing result 21 - 25 of 32 essays containing the word Coleoptera.
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21. 20,000 14C Years of Climate and Environmental Change in Europe : A Coleopteran-based Reconstruction with an Anthropocenic Focus
University essay from Umeå universitet/Miljöarkeologiska laboratorietAbstract : This thesis builds on the work of previous coleopteran-based climatic reconstructions to recreate the environment and climate of the last 20,000 14C years of northwest Europe using the data and methods available within the Bugs Coleopteran Ecology Package, and aims to assess the ability of the BugsCEP results to provide information regarding events and anthropogenic changes on environment during the Anthropocene. Samples and data from 134 sites across northwest Europe and the British Isles were included in this study. READ MORE
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22. Elater ferrugineus and Osmoderma eremita, a regional survey and habitat requirements on different landscape scales
University essay from SLU/Horticulture (until 121231)Abstract : Habitat destruction and fragmentation is the primary cause behind loss of biodiversity. Population dynamics are affected by factors that act on different spatial scales. To direct nature management efforts, the impact of different factors and at which spatial scale they act needs to be taken into consideration. READ MORE
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23. Kan naturvärdesträd med törskate vara en livsmiljö för rödlistade insekter?
University essay from SLU/Dept. of Forest Ecology and ManagementAbstract : Törskaten tillhör gruppen rostsvampar varav flera är patogena och orsakar stora ekonomiskt betydelsefulla skador på tallar i produktionsskogar och estetiska skador på tallar i parker över hela norra halvklotet. Bland de vanligare symptomen som kan ses på tallar är enstaka döda grenar eller att toppen är död. READ MORE
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24. Retention of stumps on wet ground at stump-harvest and its effects on saproxylic insects
University essay from SLU/Dept. of Forest ProductsAbstract : Low stumps represent on their own up to 80% of the dead wood remaining on clear cuts and therefore supply suitable habitat for saproxylic insects i.e. insects depending on dead wood for their survival. READ MORE
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25. Comparison of saproxylic beetle assemblages on four different broad-leaved tree species in south-eastern Sweden
University essay from Institutionen för fysik, kemi och biologiAbstract : Old hollow trees have declined in Europe and many saproxylic (wood-dwelling) beetles dependent on them are threatened. Several studies have been done on old hollow oaks and they have been shown to harbour a species-rich saproxylic beetle fauna. However, other broad-leaved trees might also be important to consider as supporting habitats. READ MORE