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Data Set Citation:
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When using this data, please cite the data package:
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NCEAS 2198: Dobson: DiseasesAndConservation , National Center for Ecological Analysis and Synthesis , and Burdon J.
Incidence of the rust Triphragmium ulmariae on Filipendula ulmaria in the Skeppsvik archipelago, Sweden
bowdish.139.4
(http://knb.ecoinformatics.org/knb/metacat/bowdish.139.4/nceas)
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| General Information: |
| Title: | Incidence of the rust Triphragmium ulmariae on Filipendula ulmaria in the Skeppsvik archipelago, Sweden |
| Identifier: | bowdish.139 |
| Abstract: |
The data set provides information on the incidence and severity of a rust fungus Triphragmium ulmariae occurring in populations of the herbaceous perennial Filipendula ulmaria growing on a range of islands in the Skeppsvik archipelago, northern Sweden. These data, together with information on the size of individual host populations, is being used to monitor temporal and spatial dynamics in a natural plant pathogen - host metapopulation system.
See Smith, David L., Ericson, Lars & Burdon, Jeremy J. (2003)
Epidemiological patterns at multiple spatial scales: an 11-year study of a Triphragmium ulmariae– Filipendula ulmaria metapopulation.
Journal of Ecology 91 (5), 890-903. doi: 10.1046/j.1365-2745.2003.00811.x for further details.
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| Keywords: |
- Triphragmium ulmariae
- Fungus
- Filipendula ulmaria
- epidemiology
- fungal pathogen
- host-pathogen interactions
- metapopulation
- spatial pattern
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Involved Parties
| Data Set Creators: |
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Organization: | NCEAS 2198: Dobson: DiseasesAndConservation |
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Organization: | National Center for Ecological Analysis and Synthesis |
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Individual: | Dr. Jeremy J. Burdon |
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Organization: | CSIRO Plant Industry |
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| Data Set Contacts: |
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Individual: | Dr. Jeremy J. Burdon |
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Organization: | CSIRO Plant Industry |
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Data Set Characteristics
| Geographic Region: |
| Geographic Description: | Skeppsvik archipelago, near Umeå, northern Sweden 63° 44-48’N, 20° 31-33’E |
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Bounding Coordinates:
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| West: | 20.51 degrees
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| East: | 20.55 degrees
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| North: | 63.8 degrees
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| South: | 63.75 degrees
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| Taxonomic Range: |
| Classification: |
| Rank Name: | Species |
| Rank Value: | Triphragmium ulmariae |
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| Classification: |
| Rank Name: | Genus |
| Rank Value: | Filipendula |
| Classification: |
| Rank Name: | Species |
| Rank Value: | Filipendula ulmaria |
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Sampling, Processing and Quality Control Methods
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Step by Step Procedures
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| Step 1: |
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Description:
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Data Collection
In 1990, 133 populations of F. ulmaria were identified on a total of 55 islands and four areas of the immediately adjacent mainland. Populations were regarded as distinct when separated from other groups of plants by at least 20 m of intervening alder woodland or at least 50 m of rocky shoreline. Up to 12 distinct populations occurred on some of the larger islands while single populations were found on many of the smaller ones. Each population was visited in mid-July when aecia of T. ulmariae were still actively producing spores, and a few uredial infections were also present. The occurrence and severity of each of these lesion types was recorded separately. Disease incidence in each population was determined by carefully screening a sample of randomly chosen plants (minimum number = 25) for the presence of pustules, while severity was assessed on individual infected plants using a visual scale measuring percentage of leaf area infected. In very small populations of F. ulmaria (< 80 plants) all individuals were examined; in larger populations this was not practical, so a random sample determined by the numerical size and the spatial distribution of the population was assessed (range of 50–200 per population). If disease was not found on these plants a further intensive search was made to determine whether the pathogen was present but at very low frequency. The size of each host population was estimated at the same time by counting numbers in representative areas and then adjusting those scores for the total area covered by the population.
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Sampling Area And Frequency:
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Disease surveys were repeated yearly (1990 - 1999 inclusive, please note that data is continuing to be collected and that at this time they have collected data up to 2005) while host population size estimates were made in all years except 1991 and 1993. Over this 11-year period we continued to monitor potential, but, as yet, unoccupied sites throughout the archipelago. As a consequence, additional host populations were identified during the study, such that by 2000 a total of 186 populations on 70 islands were being followed. Of the 55 new populations, 43 (78%) were disease free in the year of discovery, and 39 (71%) were less than 200 individuals in size when first discovered. Some of these populations may have existed in previous years and been missed by the previous census. Three small host populations went extinct during the study, but one of these was recolonized 2 years later.
The location of each population was recorded by taking co-ordinates from the detailed maps (Ekonomisk Karta över Sverige, Västerbottens län) of the area using position 7080/20K 6 h Tärnögen as the N/W 0/0 co-ordinate position.
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Sampling Description:
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Populations were allocated to individual island chains on the basis of their position, the depth of water between them, and islands in adjacent chains (obtained from the standard cartographic map). Equally, populations were allocated to water courses by their aspect on individual islands, and hence, the water course to which they had greatest exposure. The shallower water and shorelines of the islands may create lateral barriers to the dispersal of telia and teliospores on flotsam, thus increasing contagion among populations on the same island.
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Data Set Usage Rights
| Access Control: |
| Auth System: | knb |
| Order: | denyFirst |
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