Mathematisch-Naturwissenschaftliche Fakultät: Suche
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Effects of fragmentation and degradation of an afrotropical rain forest on the diversity structure of leaf beetle communities (Coleoptera, Chrysomelidae)
(2005)
East African forests are particularly diverse and endangered but are still little-known ecosystems. With an increase of the human population in East Africa throughout the last decades, the pressure on biodiversity largely ...
Entwicklung eines Leitbildes und eines Entwicklungsplanes für Wiesentäler im Wildenburger Land mit Tagfaltern als Bioindikatoren
(2005)
Wald-Wiesentäler bilden ein charakteristisches Kulturlandschaftselement der Mittelgebirge. Das Wildenburger Land (Rheinland-Pfalz, Landkreis Altenkirchen) stellt einen typischen Ausschnitt aus diesem Mittelgebirgsraum dar. ...
Langzeitstudie (1987 – 1997) zur Biologie, Ökologie und Dynamik einer Steinkauzpopulation (Athene noctua SCOP. 1769) im Lebensraum der Mechernicher Voreifel
(2005)
Die Arbeit untersucht die Situation des Steinkauzes (Athene noctua Scop. 1769) in der Mechernicher Voreifel. Hierzu wurden von 1987 bis 1997 innerhalb eines ca. 260 km² großen Gebietes (Kreise Euskirchen und Düren, NRW) ...
Systematics and Biogeography of the African Scaly-tailed Squirrels (Mammalia: Rodentia: Anomaluridae)
(2005)
The aim of the present investigation was a better understanding of the systematics and biogeography of the African scaly-tailed squirrels. Therefore 1581 anomalurid specimens from 22 collections were examined and data from ...
Evolutionary history of Southern Arabian faunal elements with a special focus on habitat fragmentation of two model organisms, Reissita simonyi (REBEL, 1899; Lepidoptera: Zygaenidae) and Hyla savignyi (AUDOUIN, 1827; Amphibia: Hylidae)
(2006)
Habitat fragmentation is assumed to be one of the major factors for genetic separation of populations. Natural fragmentation of habitats may be caused by climatic changes and their consequences (e. g. desertification), as ...
Eurasian Blackbirds (Turdus merula) and their gastrointestinal parasites: A role for parasites in life-history decisions?
(2005)
Parasites are increasingly being recognized as potent agents of selection. Gastrointestinal parasites, however, have largely been ignored. The aim of the present thesis was to contribute to the still scarce knowledge about ...
Amyloid β-peptide-induced progressive neurodegeneration in an APP-transgenic mouse model for Alzheimer’s disease
(2006)
The amyloid beta-protein (Abeta) is the main component of Alzheimer's disease (AD)-related senile plaques. In the human brain Abeta-deposition occurs in a hierarchical sequence in which different areas of the brain become ...
Bee Diversity and some Aspects of their Ecological Interactions with Plants in a Successional Tropical Community
(2006)
This study aimed at establishing bee diversity and some aspects of their interactions with plants along a forest regeneration gradient in Kakamega Forest. To determine the bee diversity, bee samples were collected with the ...
Forest fragmentation and plant-pollinator interactions in Western Kenya
(2006)
Rain forest fragmentation can affect plant-pollinator interactions and the reproductive success of plant species. Understanding these consequences is a crucial component of conserving vulnerable ecosystems.
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Effects of Habitat Degradation and Fragmentation on the Genetic Population Structure of Phytophagous Beetles in an African Rainforest
(2005)
In the presented study the genetic population structure of the phytophagous beetles Amphitmetus transversus (Coleoptera, Curculionidae) and Monolepta vincta (Coleoptera, Chrysomelidae) was analysed in a highly disturbed ...