Kooperativer Bibliotheksverbund

Berlin Brandenburg

and
and

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Leloup, Julie  (9)
Type of Medium
Language
Year
  • 1
    Language: English
    In: African Journal of Ecology, May 2011, Vol.99(3), pp.828-837
    Description: 1. Declines in availability of plant resources to pollinators are a major cause of pollinator loss. The management of plant communities to enhance floral resources is often proposed as a way to sustain pollinator populations. Nectar, the main energetic resource for pollinators, plays a...
    Keywords: Environmental Sciences ; Life Sciences ; Plant-Soil Inter-Actions ; Above-Ground-Below-Ground Interactions ; Attractiveness ; Competition ; Diversity ; Floral Display ; Nectar ; Plant-Plant Interactions ; Plant-Pollinator Interactions ; Environmental Sciences ; Biology ; Zoology ; Ecology
    ISSN: 0141-6707
    ISSN: 00220477
    E-ISSN: 1365-2028
    E-ISSN: 13652745
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Language: English
    In: Journal of Ecology, 1 May 2011, Vol.99(3), pp.828-837
    Description: 1. Declines in availability of plant resources to pollinators are a major cause of pollinator loss. The management of plant communities to enhance floral resources is often proposed as a way to sustain pollinator populations. Nectar, the main energetic resource for pollinators, plays a central role in behaviour and composition of pollinator communities. Abiotic and biotic factors are known to influence nectar traits at both the species and community levels, but the impact of plant community composition itself has never been investigated. 2. Below-ground interactions in plant communities can induce changes in plant development through (i) plant-derived litter amendment of the soil and (ii) competition for soil resources between plants. We tested how plant below-ground interactions affect above-ground nectar traits involved in plant attractiveness to pollinators. 3. A short-term pot experiment was carried out with three temperate grassland species Mimulus guttatus, Lamium amplexicaule, and Medicago sativa, showing distinct litter stoichiometry and competitive abilities for soil resources. Litter amendment (none, mono and tri-specific litter) and plant interaction treatments (monocultures, two- and three-species mixtures) were crossed in a factorial design. 4. Litter amendment to the soil led to an increase in total nectar sugar content in L. amplexicaule plants but not in the two other species. We also found that the presence of M. guttatus, a competitive species, reduced the total nectar sugar content in L. amplexicaule through a concomitant decrease in nectar volume per flower and in floral display size, but not in other species. Species-specific responses of nectar traits to variation in soil nitrogen availability were thus observed, suggesting consequences for plant species and community attractiveness to pollinators. However, we did not find evidence that the legume M. sativa affected nectar traits of any neighbouring plants. 5. Synthesis. Our results demonstrate that litter inputs and competition between plants for soil resources can alter nectar traits linked to plant attractiveness to pollinators. This supports the idea that below-ground plant—plant interactions for soil resources can influence above-ground plant— plant interactions for pollination services. This offers promising perspectives in studying the role of below-ground—above-ground interactions on higher trophic levels.
    Keywords: Biological sciences -- Biology -- Botany ; Biological sciences -- Biology -- Botany ; Applied sciences -- Materials science -- Materials ; Biological sciences -- Agriculture -- Agricultural sciences ; Biological sciences -- Biology -- Botany ; Biological sciences -- Biochemistry -- Biomolecules ; Biological sciences -- Ecology -- Human ecology ; Biological sciences -- Ecology -- Natural resources ; Environmental studies -- Environmental sciences -- Developmental biology ; Biological sciences -- Biology -- Developmental biology
    ISSN: 00220477
    E-ISSN: 13652745
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    In: FEMS Microbiology Ecology, 2013, Vol. 86(1), pp.26-35
    Description: Little is known about the factors that regulate C mineralisation at the soil pore scale or how these factors vary throughout the pore network. This study sought to understand how the decomposition of organic carbon varies within the soil pore network and to determine the relative importance of local environmental properties relative to biological properties as controlling factors. This was achieved by sterilising samples of soil and reinoculating them with axenic bacterial suspensions using the matric potential to target different locations in the pore network. Carbon mineralisation curves were described with two-compartment first-order models to distinguish CO 2 derived from the labile organic carbon released during sterilisation from CO 2 derived from organic C unaffected by sterilisation. The data indicated that the size of the labile pool of organic C, possibly of microbial origin, varied as a function of location in the pore network but that the organic carbon unaffected by sterilisation did not. The mineralisation rate of the labile C varied with the bacterial type inoculated, but the mineralisation rate of the organic C unaffected by sterilisation was insensitive to bacterial type. Taken together, the results suggest that microbial metabolism is a less significant regulator of soil organic carbon decomposition than are microbial habitat properties.
    Keywords: Pore Network ; C Mineralisation ; Microbial Habitat ; Matric Potential ; Sterilisation ; Inoculation
    ISSN: 01686496
    E-ISSN: 1574-6941
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Language: English
    In: Sci Rep, 2018, Vol.8(1), pp.4057-4057
    Description: A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper.
    Keywords: Biology;
    ISSN: 2045-2322
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Language: English
    In: Sci Rep, 2017, Vol.7(1), pp.4280-4280
    Description: An underlying assumption of most soil carbon (C) dynamics models is that soil microbial communities are functionally similar; in other words, that microbial activity under given conditions is not dependent on the composition or diversity of the communities. Although a number of studies have indicated that microbial communities are not intrinsically functionally similar, most soil C dynamics models can adequately describe C dynamics without explicitly describing microbial functioning. Here, we provide a mechanistic basis for reconciling this apparent discrepancy. In a reciprocal transplant experiment, we show that the environmental context (soil and pore-network properties) of microbial communities can constrain the activity of functionally different communities to such an extent that their activities are indistinguishable. The data also suggest that when microbial activity is less constrained, the intrinsic functional differences among communities can be expressed. We conclude that soil C dynamics may depend on microbial community structure or diversity in environments where their activity is less constrained, such as the rhizosphere or the litter layer, but not in oligotrophic environments such as the mineral layers of soil.
    Keywords: Biology;
    ISSN: 2045-2322
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Language: English
    In: Geoderma, 01 May 2018, Vol.317, pp.1-7
    Description: In order to differentiate the effects of root functioning and aboveground litter inputs on soil bacterial communities, a pot experiment was designed using different combinations of three plant species with contrasting chemical characteristics (0, 1, 2 or 3 species per plot) grown with or without aboveground litter inputs from the same plant species (no litter, litter from 1 of the species, or litter from the 3 species). Bacterial community structure (ITS diversity-ARISA), as well as total bacteria and denitrifier abundances (qPCR targeting the rDNA and or genes) and denitrifying enzyme activity (DEA) were determined. No clear effects of the plant and litter identities were revealed over the incubation time. Moreover, differences in litter C:N values did not influence the bacteria or denitrifier abundances nor DEA. Interestingly, litter diversity modified the bacterial community structure, while plant richness altered the total bacteria and denitrifier abundances as well as DEA. Soil moisture appeared to be the major driver of plant and litter richness effects in our experiment.
    Keywords: Plant and Litter Diversity ; Plant-Microorganisms' Interactions ; Bacterial and Denitrifying Community Functioning ; Agriculture
    ISSN: 0016-7061
    E-ISSN: 1872-6259
    Source: ScienceDirect Journals (Elsevier)
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Language: English
    In: EGU 2017, European Geophysical Union General Assembly 2017, 2017
    Description: Habitat constraints on the functional significance of soil microbial communities. EGU 2017, European Geophysical Union General Assembly 2017
    Keywords: Life Sciences
    Source: Hyper Article en Ligne (CCSd)
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Language: English
    Description: Pore scale microbial biogeography. 4. International Congress EUROSOIL 2012
    Keywords: Environmental Sciences ; Global Changes ; Sol ; Milieux Poreux ; Microorganismes Du Sol ; Environmental Sciences
    Source: Hyper Article en Ligne (CCSd)
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Language: English
    In: Soil Organic Matter Stabilization conference, SOM 2012, 2012
    Description: Distribution and mineralisation rate of soil organic matter at the pore scale. Soil Organic Matter Stabilization conference, SOM 2012
    Keywords: Life Sciences
    Source: Hyper Article en Ligne (CCSd)
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. Further information can be found on the KOBV privacy pages