WorldCat Identities

Maraun, Mark

Overview
Works: 46 works in 81 publications in 2 languages and 542 library holdings
Roles: dgs, Other, Author, Contributor
Publication Timeline
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Most widely held works by Mark Maraun
Hornmilben (Oribatida) in Buchenwäldern : Nahrungsbiologie und Einfluß auf Stoff-Flüsse by Mark Maraun( Book )

5 editions published in 1997 in German and held by 35 WorldCat member libraries worldwide

Tree species as determinants of the structure of oribatid mite communities (Oribatida) and the incorporation of plant carbon and nitrogen in the soil animal food web by Verena Eißfeller( )

2 editions published in 2013 in English and held by 30 WorldCat member libraries worldwide

In this dissertation I investigated the role of tree species for the structure and functioning of soil animal food webs in temperate forests. In the field, the role of tree species diversity as compared to tree species identity for the structure of oribatid mite communities was investigated. Two laboratory studies focused on the role of two important tree species of deciduous forests (beech and ash) as determinants of the flux of C and N through the soil animal food web. In Chapter 2 results of a field experiment investigating the density, community structure and diversity of oribatid mites
Effects of temperature and body mass on soil communities by Birgit Lang( )

1 edition published in 2013 in English and held by 29 WorldCat member libraries worldwide

The Earth is undergoing a climate change with predicted increases in temperature by up to 6° C until 2100. How this warming affects soil food webs is of fundamental interest for mankind as it may influence global food production. Due to the complexity of soil systems and species' interactions, simplifications are required in search for general patterns. One simplification used in this thesis is the categorization of species into con- sumer types such as carnivores, herbivores and detritivores, as physiological traits such as assimilation efficiencies and respiration rates are thought to dif
Der Rotmilan (Milvus milvus) im Unteren Eichsfeld by Nicole Wasmund( )

2 editions published in 2013 in German and held by 28 WorldCat member libraries worldwide

In the present study were examined population density, habitat use and composition, young bird rearing, food and predation on Red Kite (Milvus milvus). Essential questions were how stable is the stock in the area and what causes could there be for the decrease previously suspected. In essence, the hypothesis was tested that the lack of food is the essential component that caused the Germany-wide decline of red kites since 1990 (NICOLAI/ MAMMEN 2009). Study area was the bird sanctuary EU SPA V19 (Unteres Eichsfeld) with an area of 13,710 hectares. The study period lasted from 2009 until 2012
Community structure, trophic ecology and reproductive mode of oribatid mites (Oribatida, Acari) in forest ecosystems by Georgia Erdmann( )

2 editions published in 2012 in English and held by 27 WorldCat member libraries worldwide

Oribatid mites are predominantly soil-living organisms reaching densities of up to 400,000 individuals per square meter in forest soils, where they contribute to decomposition processes and nutrient cycling. In acidic forests they are the main decomposer taxon, together with collembolans. Despite their outstanding importance for soil processes knowledge about their trophic ecology and factors structuring their communities is low. About ten percent of the 10,000 described species are thelytokous (i.e., they reproduce via female parthenogenesis); locally up to 80 % of all individuals in tempe
Molecular Analysis of Centipede Predation by Bernhard Eitzinger( )

1 edition published in 2013 in English and held by 27 WorldCat member libraries worldwide

Soil food webs are an essential part of terrestrial ecosystem functioning and characterised by a high degree of cross linkage between the members of a highly diverse soil community. Centipedes are abundant predators in the litter and soil layers of temperate forests. They are assumed to be generalist predators, feeding on a wide range of prey such as collembola and earthworms. However, knowledge of their feeding ecology is scarce, as the opaque habitat, the high diversity of prey, and extra oral digestion hamper analysis of their feeding behaviour. Molecular gut content analysis, however, a
The nematode-based food-chain of a temperate deciduous forest by Kerstin Heidemann( )

2 editions published in 2013 in English and held by 23 WorldCat member libraries worldwide

Soils are complex and heterogeneous habitats for soil animals. Trophic interactions between soil animals are depicted in soil food webs which form an essential component of terrestrial ecosystems. Soil food webs are based on predator-prey interactions and reflect the flux of matter and energy through ecological systems. The soil food web is compartmentalized in distinct energy channels that process energy in different ways. The main energy channels in forest systems are the bacterial, fungal and plant litter energy channel with the bacterial channel probably being the fastest. However, the
Soil animal food webs in temperate forests: effects of forest management on trophic structure as indicated by molecular gut content, stable isotope and fatty acid analyses by Olga Ferlian( )

2 editions published between 2014 and 2015 in English and held by 19 WorldCat member libraries worldwide

The soil system comprises a high diversity of coexisting species interacting in close association. Generally, soil animals are assumed to be trophic generalists feeding on resources of even different trophic levels. The complex structure of soil habitats hampers locating specific resources and this results in feeding on a broad range of resources. It has been assumed that most decomposers rely on labile resources of high nutritional value, such as high quality litter and microorganisms. However, there is increasing evidence that recalcitrant carbon sources being physically and chemically st
Conservation physiology of two closely related, sympatric lemur species, the fat-tailed dwarf lemur (Cheirogaleus medius), and the gray mouse lemur (Microcebus murinus) by Hasina Josué Rakotoniaina( )

3 editions published between 2016 and 2017 in English and held by 18 WorldCat member libraries worldwide

The detrimental effects of human-induced habitat loss and degradation on wildlife are pervasive and represent a primary concern for conservation biologists. Understanding how organisms accurately recognise and respond to these challenges is therefore an important goal of conservation-related research. Species are known to respond differently to anthropogenic disturbance and while some are relatively good at coping with a certain degree of perturbation, some face drastic population decline. This heterogeneity in coping abilities has been generally connected to various biological attributes s
Trophic interactions of ants, birds and bats affecting crop yield along shade gradients in tropical agroforestry by Pierre Gras( )

2 editions published between 2014 and 2015 in English and held by 18 WorldCat member libraries worldwide

Tropical agroforests are diverse systems where several predator groups shape animal communities and plant-arthropod interactions. Ants, birds and bats in particular can reduce herbivores and thereby increase crop yield. However, the relative importance of these groups, whether they interact, and how this is affected by management and landscape context, is poorly understood. We jointly manipulated access of ants, birds and bats in Indonesian smallholder cacao agroforestry across gradients of shade and distance to natural forest. We quantified arthropod abundance, pest damage and yield. The t
Trophic structure of soil animal food webs of deciduous forests as analyzed by stable isotope labeling by Sarah Lorain Janice Zieger( )

3 editions published between 2015 and 2016 in English and held by 18 WorldCat member libraries worldwide

Forest soil invertebrates are extremely diverse and form complex food webs. Trophic interactions are concealed from direct observation by the heterogeneous soil system and small size of soil invertebrates and their basal resources such as soil microorganisms. The soil system is connected to plant via roots and leaf litter. Tree species identity is known to affect soil animal communities and energy fluxes. To analyze energy fluxes from the above- to the belowground system stable isotopes are widely used. By using 13C (carbon) and 15N (nitrogen) labeling experiments, I analyzed the contributi
The soil food web of temperate deciduous forests: litter and root resources as driving factors, and soil fauna effects on ecosystem processes by Diana Grubert( )

2 editions published in 2016 in English and held by 18 WorldCat member libraries worldwide

Above- and belowground communities have been investigated independently for long, but there is increasing evidence that both are intimately linked and depend on each other. Plants provide energy and nutrients for the belowground consumer community, both via litter and root exudates, thereby affecting soil biota. Simultaneous investigations of both litter and root exudate based pathways are scarce and therefore, the relative importance of roots as compared to litter as food resource for soil organisms remains unknown. Soil organisms, in turn, contribute to ecosystem processes like litter dec
Oribatid mite community structure and trophic ecology along a forest land-use gradient: effect of dead wood, time and root-trenching by Christian Bluhm( )

2 editions published in 2016 in English and held by 18 WorldCat member libraries worldwide

Oribatid mites are involved in decomposition processes, formation of soil structure and nutrient cycling in most soils worldwide. The main habitats of oribatid mites are litter and soil but they also occur numerously on tree trunks, dead wood, marine intertidal zones and freshwater habitats. Especially in forest ecosystems they reach high local density and diversity and often dominate arthropod fauna in edaphic and arboreal habitats where they form an important part of the food web. Although oribatid mites are often regarded as a functional group of primary decomposers they feed on a wide r
Structure of and carbon flux through soil food webs of temperate grassland as affected by land use management by Kathleen Lemanski( )

2 editions published in 2014 in English and held by 18 WorldCat member libraries worldwide

In Europe grasslands are among the most important agricultural systems. They are subject to continuous management intensification, which is potentially threatening ecosystem services. Since soil comprises the largest terrestrial carbon (C) pool, processes affecting C sequestration are receiving increasing attention. Exploring the structure and functioning of food webs is crucial for improving the understanding of C fluxes within the soil system and how they react to anthropogenically induced land use changes. Despite growing attention, soil processes such as the flux of C from the abovegrou
Genetic diversity of sexual and parthenogenetic soil living arthropods (Collembola) in Europe: colonization patterns, pre-glacial diversifications and founder effects by Helge von Saltzwedel( )

3 editions published between 2015 and 2016 in English and German and held by 17 WorldCat member libraries worldwide

Large parts of northern and central Europe were covered by ice sheets and permafrost due to climate changes in Europe during the last ice age (2.7 million to 11.7 kya). Plant and animal species had to adapt to lower temperatures, retreated to warmer areas in the south or went extinct. Once, after the Last Glacial Maximum (LGM, 26.5 kya to 19 kya) higher temperatures induced ice free habitats and these new habitats could be recolonized from different refugia. Collembola are one of the most abundant soil living decomposer animals and play a major role in aboveground - belowground interactions
Spread and performance of European earthworms invading North America as indicated by molecular markers and climate chamber experiments by Andreas Klein( )

2 editions published in 2018 in English and held by 17 WorldCat member libraries worldwide

European lumbricid earthworms were introduced into northern North America by European settlers about 400 years ago. They are invasive across the continent and cause notable changes in native forest ecosystems. Human-mediated introductions and dispersal significantly contributed to the spread of European species in North America, which commonly are used as fishing bait and are often disposed deliberately in the field. During their range expansion they encountered harsher climatic conditions as compared to their native range in Europe. Variance of abiotic factors and genetic identity or diver
Influence of warming on microbial ecosystems by Katarina Elisabeth Fussmann( )

2 editions published in 2017 in English and held by 17 WorldCat member libraries worldwide

Climate change is progressing fast causing losses in biodiversity to the extent that scientists believe the world to be on the brink of the sixth wave of mass extinction. While some global change drivers like pollution, nutrient enrichment or extended land-use on the expense of natural habitats may pose more obvious threats to ecosystems, even seemingly small changes in temperature as they are predicted for this century can have detrimental effects on populations and entire ecosystems. Temperature influences ecological processes through their underlying biological rates like metabolism, gro
Land-use impacts on biodiversity and ecosystem functioning of complex multitrophic communities by Andrew D Barnes( )

2 editions published between 2015 and 2016 in English and held by 17 WorldCat member libraries worldwide

Global biodiversity is rapidly declining, resulting in far-reaching impacts on the functioning of ecosystems and human wellbeing. In recent decades, anthropogenic land use has been identified as a major driver of biodiversity loss, especially through the expansion and intensification of agricultural systems. While the drivers of biodiversity loss have been relatively clearly established, variability in the way that whole ecosystems respond to these drivers is still poorly understood. This is, in part, because we still lack a clear understanding of how species interactions govern the way tha
Transposable elements in sexual and asexual animals by Jens Bast( )

1 edition published in 2015 in English and held by 17 WorldCat member libraries worldwide

Altitude, litter quality and availability of root derived resources as determinants of decomposition processes and soil microarthropod community composition in tropical montane rainforests in Southern Ecuador by Franca Marian( )

2 editions published in 2016 in English and held by 17 WorldCat member libraries worldwide

Decomposition processes in the high tropical Andes are complex and influenced by a variety of biotic and abiotic factors. Tropical montane rainforests of the high Andes harbour large stocks of dead organic material and little is known on the regulatory forces responsible for this accumulation of carbon. Litter quality, climate and the decomposer community are known from other systems as the main factors controlling decomposition rates. Microarthropods play a major role in regulating decomposition processes due to the impact they have on their surrounding habitat. They are known to regulate
 
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Languages
English (35)

German (8)