TITLE

Moss carpets constrain the fertilizing effects of herbivores on graminoid plants in arctic polygon fens

AUTHOR(S)
Pouliot, Rémy; Rochefort, Line; Gauthier, Gilles
PUB. DATE
December 2009
SOURCE
Botany;Dec2009, Vol. 87 Issue 12, p1209
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We conducted a fertilization experiment in polygon fens that were grazed by Greater Snow Geese on Bylot Island (Canadian Arctic) to determine whether mosses can interfere with nutrient cycling and thereby prevent a direct fertilizing effect of herbivore faeces on vascular plants. We measured the effects of nitrogen (N), phosphorus (P), and faecal addition on growth parameters and nutrient content of graminoids and mosses over a 2 year period. Growth and nutrient content of graminoids were enhanced only for high levels of N addition (5 g·m–2 per season), and showed little response to P addition. Although the growth of mosses showed a slight response to N or P addition, it is primarily nutrient content that was generally enhanced at all levels of fertilization. In many cases, stronger responses were detected when N and P were applied in combination, rather than singly. Addition of goose droppings had no effect on any measured parameters. Our results suggest that bryophytes act as a natural barrier by absorbing nutrients from external additions, thus blocking the access of highly assimilable nutrients to graminoid plant roots. At increased levels of N addition, bryophytes were apparently saturated so the nutrient surplus leached down to roots and was thus available for graminoid plant growth. The presence of a thick moss layer likely explains why the deposition of faeces by herbivores such as geese has no effect on graminoid growth in arctic polygon fens.
ACCESSION #
47129595

 

Related Articles

  • The effects of herbivory and soil fertility on the growth patterns of Quercus serrata and Q. crispula saplings at the shoot and individual levels. Mizumachi, Eri; Osawa, Naoya; Akiyama, Reiko; Tokuchi, Naoko // Population Ecology;Aug2004, Vol. 46 Issue 2, p203 

    We investigated the combined effects of herbivore damage and soil fertility on shoot growth patterns of Quercus serrata and Q. crispula saplings at both the shoot and individual levels. Saplings were grown in herbivore-damaged or undamaged areas of the greenhouse with the two fertilization...

  • The Fertilization Influence on Growth of Apple Shoots. Vămăşescu, Sergiu // Bulletin of the University of Agricultural Sciences & Veterinary;2011, Vol. 68 Issue 1, p113 

    The investigations were made in the orchard of the firm "Zubresti" S.A. established in spring 2003, the tree planting distances are 4 x 2 m. The trees are conducted by the fusiform crown. There have been studied the influence of Urea concentration on the growth of shoots in intensive period of...

  • Complex Effects of Fertilization on Plant and Herbivore Performance in the Presence of a Plant Competitor and Activated Carbon. Mahdavi-Arab, Nafiseh; Meyer, Sebastian T.; Mehrparvar, Mohsen; Weisser, Wolfgang W. // PLoS ONE;Jul2014, Vol. 9 Issue 7, p1 

    Plant-herbivore interactions are influenced by host plant quality which in turn is affected by plant growth conditions. Competition is the major biotic and nutrient availability a major abiotic component of a plant’s growth environment. Yet, surprisingly few studies have investigated...

  • THE INFLUENCE OF BIOHYDROHUMUS ON GROWTH AND DEVELOPMENT OF GARDEN PANSY (Viola x wittrockiana Gams.). Żurawik, Piotr; Placek, Monika // Acta Agrobotanica;2013, Vol. 66 Issue 3, p31 

    In the years 2007-2008, experiments were conducted with four cultivars of garden pansy grown in pots, in media prepared as mixtures of wet shrimp waste (BioHydroHumus) and sphagnum peat at the following volumetric ratios: 2% BioHydroHumus + 98% sphagnum peat, 5% BioHydroHumus + 95% sphagnum...

  • Efficacy of Exogenous Elicitors against Tuta Absoluta on Tomato. Hussein, M. Nehal; Hussein, M. I.; Gadel Hak, S. H.; Hammad, M. A.; Shaalan, H. S. // Nature & Science;2014, Vol. 12 Issue 5, p68 

    Plant defensive systems against herbivores such as leafminers can be induced by application of biotic and abiotic elicitors. In this study we examined the effect of some elicitor treatments on the response of tomato hybrid cultivar Gold Stone against (Tuta absoluta). Also, their effects on the...

  • Dry mass partitioning and nitrogen uptake by Eucalyptus grandis plants in response to localized or mixed application of phosphorus. Graciano, Corina; Tambussi, Eduardo A.; Castán, Elisa; Guiamet, Juan J. // Plant & Soil;Jun2009, Vol. 319 Issue 1/2, p175 

    Plants respond to nutrient rich patches by changing root morphology and physiology. The aim of this paper was to analyze shoot and root growth of Eucalyptus grandis plants fertilized with the same amount of phosphorus applied in two different ways: thoroughly mixed in the soil or localized in a...

  • Analyses of Growth, Yield and Fertilization of Vegetable Sesame (Sesamum radiatum Schum). Auwalu, B. M.; Babatunde, F. E. // Journal of Plant Sciences;2007, Vol. 2 Issue 1, p108 

    Growth and yield data obtained from response of vegetable sesame to nitrogen and phosphorus fertilizer application were correlated and regressed. Total marketable yield of vegetable sesame was found to be strongly correlated with growth parameters such as plant height, number of leaves per plant...

  • Performance of River Saltbush (Atriplex amnicola) Grown on Contaminated Soils as Affected by Organic Fertilization. Eissa, Mamdouh A. // World Applied Sciences Journal;2014, Vol. 30 Issue 12, p1877 

    Chenopod shrubs accumulate Na, K and Cl. There is little information available on the factors affecting the accumulation of these and other minerals in these plants. A field experiment was conducted out to study the accumulation of Na, Cl, K, N, Ca, P, Mg, Cu, Zn, Cd, Pb and Mn in Atriplex...

  • INTEGRATED NUTRIENT MANAGEMENT FOR BHUMAMALAKI (PHYLLANTHUS AMARUS SCHUM AND THONN.). Balakumbahan, R.; Sadasakthi, A.; Sivakumar, V. // Agricultural Science Digest;2011, Vol. 31 Issue 3, p198 

    The experiment was conducted at department of Horticulture AC & RI, Madurai. The treatments included three levels of N (50, 75 & 100kg/ha), P2O5 (25, 37.5 & 50 kg/ha) and biofertilizers (Azophos,VAM and No biofertilizer). The growth and yield characters were recorded at regular interval of 30...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics