Restorative grazing as a tool for directed succession with diaspore inoculation: the model of sand ecosystems

Stroh, Michael; Storm, Christian; Zehm, Andreas; Schwabe, Angelika

doi:10.1127/0340-269x/2002/0032-0595

Cited by 46 publications

(44 citation statements)

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“…Indeed, one year after the soil transfer, the percent cover was 20% on the compacted plots against 40% on the uncompacted plots. However, the sheep grazing can have the same function to open the ecosystem (Gibson and Brown, 1992;Bullock, 1998;Stroh et al, 2002;Henry, 2009).…”

Section: Discussionmentioning

confidence: 97%

“…Then, it seems necessary now to re-establish a management system that will control vegetation growth. The return of sheep grazing is probably the best tool, due to trampling and biomass consumption (Gibson and Brown, 1992;Bullock, 1998;Stroh et al, 2002;Henry, 2009). Moreover, we suggest that the differences measured between 2011 and 2012/2013 in the reference steppe were due to interannual variations in grazing pressure which is a characteristic of the grazing system in the Crau area (Dureau and Bonnefon, 1993).…”

Section: Discussionmentioning

confidence: 98%

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A comparison of different soil transfer strategies for restoring a Mediterranean steppe after a pipeline leak (La Crau plain, South-Eastern France)

Bulot

Provost

Dutoit

2014

Ecological Engineering

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 98%

A comparison of different soil transfer strategies for restoring a Mediterranean steppe after a pipeline leak (La Crau plain, South-Eastern France)

Bulot

Provost

Dutoit

2014

Ecological Engineering

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“…In spite of the proper abiotic site conditions (e.g., low nitrogen content), these species, present at the site in sparse populations, did not colonize, possibly because of limits of propagule dispersal. Missing also from soil seed banks, these species apparently rely on diaspore transfer with hay, topsoil transfer (Stroh et al 2002;Donath et al 2003;Hölzel and Otte 2003) or grazing animals (Fischer et al 1996;Poschlod et al 1998). Soil disturbance should, however, be avoided to prevent germination of weedy pioneers that have built up dense, persistent soil seed banks.…”

Section: Implication For Restorationmentioning

confidence: 97%

Seed Bank and Vegetation Development of Sandy Grasslands After Goose Breeding

et al. 2009

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Four hypotheses were tested using long-term observations of vegetation development (12 years) and present-day seed bank data in a sandy grassland area overgrazed by domestic geese: i) Gap regeneration is crucial in maintaining species richness; thus, closed vegetation of the lower sites prevents continuous establishment of short-lived species. ii) Short-lived, early successional species comprise most of the seed banks and late successional perennials have at most sparse seed banks. iii) Composition of seed banks is more similar to pioneer vegetation than to later successional stages. iv) The similarity is higher between vegetation and seed banks in the upper-positioned plots than in the closed, lower-positioned ones. Two sites, located in the upper part of dune slopes, and another two, positioned on the lower part, were studied. In each site five 2×2 m permanent plots were surveyed between 1991 and 2002. Percentage cover was estimated three times a year. In the last study year, soil seed banks were sampled. Two vertical segments (0-5, 5-10 cm) were separately analyzed. The seedling emergence method was applied on concentrated samples. We found that the vegetation developed from open, annual dominated weedy assemblages to grasslands dominated by perennial graminoids. In the lowerpositioned sites perennial clonal grasses (Cynodon dactylon, Poa angustifolia and P. pratensis) formed more closed vegetation, which was accompanied by lower species richness compared to the upper-positioned sites. Seed density varied between 10,300 and 40,900 seeds/m 2 . Significantly higher seed densities were found in upper sites than in the lower ones. Annuals and short-lived perennial dicots comprised most of the seed bank. The dominant perennial graminoids also built up dense seed banks.We found a low to medium similarity between vegetation and the seed bank; similarity was the highest with the vegetation of the 1994-1998 period. In the upper sites the similarity between seed bank and the vegetation of the last studied years was also high. The vertical position had a significant effect on regeneration after overgrazing. The large cover of grasses in lower sites decreased species richness and it also decreased the seed density preventing the seed bank formation of annuals and short-lived perennials. Here, further management practices are needed to increase the species richness.

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“…To estimate the extent of grazing damage precisely, we calibrated it for each plant species in neighbouring non-grazed vegetation outside the investigated paddock. This method was used earlier to classify the level of plant species selection on sand grassland communities managed by sheep grazing in southern Germany (Stroh et al 2002). Nomenclature of plant species follows Kubát et al (2002).…”

Section: Data Collectionmentioning

confidence: 99%

“…In practice, various methods were used to study the diet selection and they can be generally divided into two broad types: 1) methods directly connected with animals such as the analysis of fecal and rumen contents (Homolka & Heroldová 1992;Heroldová 1996;Mellado et al 2004), esophageal fistulation (Henley et al 2001;Woji & Iji 1996) and direct observations of grazing animals (Dumont & Boissy 2000); or, alternatively, 2) methods based on vegetation such as the measurement of sward height (Correl et al 2003;Barthram et al 2005), biomass sampling of grazed plots and ungrazed control (Lepš et al 1995) or direct estimation of grazing damage caused by bites upon individual plant species on the pasture (Bílek et al 2000;Stroh et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Sward structure and diet selection after sheep introduction on abandoned grassland in the Giant Mts, Czech Republic

et al. 2008

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The effect of rotational grazing on the sward structure of long-term abandoned grassland and the sheep diet selection were investigated in the Giant Mts (Krkonoše/Karkonosze). The aim of the study was to answer the following questions: (1) Does sheep grazing affect the sward structure of previously abandoned mountain grassland? (2) How does sheep diet selection develop within and among grazing seasons? (3) Which section of a pasture do sheep prefer to graze? Data was collected three times during each grazing season in spring, summer and in autumn in the years 2001, 2002 and 2003. Fifty 1 × 1 m plots were used where the plant species occurrence and damage of plants by grazing for all species were repeatedly recorded. 1) Nonsignificant changes in plant species occurrences were recorded in spite of obvious visual changes in sward structure due to grazing e.g. the retreat of tall dominant species characteristic of long-term unmanaged grasslands. 2) Seasonal as well as inter-annual changes in sheep diet selection were detected. In spring 2001, sheep grazed over a wide variety of plant species in low quantities. In subsequent springs, they preferred species favoured during previous autumns (Veratrum album subsp. lobelianum; Ranunculus platanifolius; Senecio ovatus) and changed the diet only as a result of the elimination of favoured plants. 3) Sheep preferred to graze at the highest elevated part of the pasture probably as a consequence of anti-predator behaviour not due to higher occurrence of favoured plant species or the presence of a drinking place or salt licks. Changes in the sward structure were mostly of a quantitative not qualitative character, thus the presence-absence data collection is not a suitable method for monitoring the effects of management restoration. The diet selection changed probably due to the animals' experience; sheep had no experience with montane species in spring 2001. The sheep were able to recognize favoured plant species after 6 months of wintering in lowland.

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Restorative grazing as a tool for directed succession with diaspore inoculation: the model of sand ecosystems

Cited by 46 publications

References 0 publications

A comparison of different soil transfer strategies for restoring a Mediterranean steppe after a pipeline leak (La Crau plain, South-Eastern France)

A comparison of different soil transfer strategies for restoring a Mediterranean steppe after a pipeline leak (La Crau plain, South-Eastern France)

Seed Bank and Vegetation Development of Sandy Grasslands After Goose Breeding

Sward structure and diet selection after sheep introduction on abandoned grassland in the Giant Mts, Czech Republic

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