SP030

Mycorrhizal map sampling data in different age class plots of Douglas-fir forests, Andrews Experimental Forest, 1992-2005

• Creator(s): Robert P. Griffiths
• PI(s): Robert P. Griffiths
• Originator(s): Robert P. Griffiths
• Other researcher(s): Gay A. Bradshaw, Barbara J. Marks, George W. Lienkaemper
• Dates of data preparation: Jul 1 1992 - Jun 20 2005
• Data collection status: Study collection is completed and no new collection is planned
• Data access: Online
• Last update: Jun 23 2005 (Version 3)

<Citation>     <Acknowledgement>     <Disclaimer>    

Griffiths, R. 2005. Mycorrhizal map sampling data in different age class plots of Douglas-fir forests, Andrews Experimental Forest, 1992-2005. Long-Term Ecological Research. Forest Science Data Bank, Corvallis, OR. [Database]. Available: http://andlter.forestry.oregonstate.edu/data/abstract.aspx?dbcode=SP030. Accessed 2024-11-21.

Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 2025755), US Forest Service Pacific Northwest Research Station, and Oregon State University.

While substantial efforts are made to ensure the accuracy of data and documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is". The Andrews LTER shall not be liable for damages resulting from any use or misinterpretation of data sets.

ABSTRACT:
	Ectomycorrhizal mats in forest soils have a wide global distribution and are apparently important to nutrient cycling. Since little known about the factors influencing their distribution we have conducted one of the first studies attempting to define the factors influencing mat distribution. We chose to study distribution patterns of mat-forming ectomycorrhizal fungi of the genera Hysterangium and Gautieria in coniferous forests of the Pacific northwestern United States by mapping ectomycorrhizal mats and other forest floor features in 2 x 10 meter plots and digitized into a Geographical Information System (GIS) for spatial pattern analysis. Distribution was measured in terms of mat size, size variability and shape, total mat cover per stand age, nearest neighbor distances, and correlation with understory vegetation and tree age using the digitized plot mats. While GIS analysis indicated that Hysterangium and Gautieria did not physically overlap, there appears to be a tendency for clustering of mats. No apparent correlations were observed between forest floor features and mats located within the 2 x 10 meter grids. Mat distributions were found to vary temporally; total mat area, size and frequency differed for Hysterangium and Gautieria mats when comparing young, mature and old-growth stands. The GIS analysis has been reported by Griffiths et. al. 1996 (Pub 2251) and the digitized plot maps on which these analyses were based are available in this data set.

Study Description

Download Study Location Information: (CSV) Ecological Metadata Language: (EML)

ENTITY TITLES:
1	Sites of mycorrhizal sampling data in different age class plots of Douglas-fir forests, Andrews Experimental Forest and vicinity	MAP / METADATA	DATA
2	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 10y1	MAP / METADATA	DATA
3	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 10y2	MAP / METADATA	DATA
4	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 10y3	MAP / METADATA	DATA
5	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 6y1	MAP / METADATA	DATA
6	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 6y2	MAP / METADATA	DATA
7	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 6y3	MAP / METADATA	DATA
8	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 7y1	MAP / METADATA	DATA
9	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 7y2	MAP / METADATA	DATA
10	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 7y3	MAP / METADATA	DATA
11	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 10c1	MAP / METADATA	DATA
12	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 10c2	MAP / METADATA	DATA
13	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 10c3	MAP / METADATA	DATA
14	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 6c1	MAP / METADATA	DATA
15	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 6c2	MAP / METADATA	DATA
16	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 6c3	MAP / METADATA	DATA
17	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 7c1	MAP / METADATA	DATA
18	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 7c2	MAP / METADATA	DATA
19	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot 7c3	MAP / METADATA	DATA
20	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot ms1_1	MAP / METADATA	DATA
21	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot ms1_2	MAP / METADATA	DATA
22	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot ms1_3	MAP / METADATA	DATA
23	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot ms2_1	MAP / METADATA	DATA
24	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot ms2_2	MAP / METADATA	DATA
25	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot ms2_3	MAP / METADATA	DATA
26	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot ms3_1	MAP / METADATA	DATA
27	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot ms3_2	MAP / METADATA	DATA
28	Distribution of mats similar to those found in the genus Gautieria and Hysterangium, plot ms3_3	MAP / METADATA	DATA
29	Surface features of rocks, roots, logs and vegetation, plot 10y1	MAP / METADATA	DATA
30	Surface features of rocks, roots, logs and vegetation, plot 10y2	MAP / METADATA	DATA
31	Surface features of rocks, roots, logs and vegetation, plot 10y3	MAP / METADATA	DATA
32	Surface features of rocks, roots, logs and vegetation, plot 6y1	MAP / METADATA	DATA
33	Surface features of rocks, roots, logs and vegetation, plot 6y2	MAP / METADATA	DATA
34	Surface features of rocks, roots, logs and vegetation, plot 6y3	MAP / METADATA	DATA
35	Surface features of rocks, roots, logs and vegetation, plot 7y1	MAP / METADATA	DATA
36	Surface features of rocks, roots, logs and vegetation, plot 7y2	MAP / METADATA	DATA
37	Surface features of rocks, roots, logs and vegetation, plot 7y3	MAP / METADATA	DATA
38	Surface features of rocks, roots, logs and vegetation, plot 10c1	MAP / METADATA	DATA
39	Surface features of rocks, roots, logs and vegetation, plot 10c2	MAP / METADATA	DATA
40	Surface features of rocks, roots, logs and vegetation, plot 10c3	MAP / METADATA	DATA
41	Surface features of rocks, roots, logs and vegetation, plot 6c1	MAP / METADATA	DATA
42	Surface features of rocks, roots, logs and vegetation, plot 6c2	MAP / METADATA	DATA
43	Surface features of rocks, roots, logs and vegetation, plot 6c3	MAP / METADATA	DATA
44	Surface features of rocks, roots, logs and vegetation, plot 7c1	MAP / METADATA	DATA
45	Surface features of rocks, roots, logs and vegetation, plot 7c2	MAP / METADATA	DATA
46	Surface features of rocks, roots, logs and vegetation, plot 7c3	MAP / METADATA	DATA
47	Surface features of rocks, roots, logs and vegetation, plot ms1_1	MAP / METADATA	DATA
48	Surface features of rocks, roots, logs and vegetation, plot ms1_2	MAP / METADATA	DATA
49	Surface features of rocks, roots, logs and vegetation, plot ms1_3	MAP / METADATA	DATA
50	Surface features of rocks, roots, logs and vegetation, plot ms2_1	MAP / METADATA	DATA
51	Surface features of rocks, roots, logs and vegetation, plot ms2_2	MAP / METADATA	DATA
52	Surface features of rocks, roots, logs and vegetation, plot ms2_3	MAP / METADATA	DATA
53	Surface features of rocks, roots, logs and vegetation, plot ms3_1	MAP / METADATA	DATA
54	Surface features of rocks, roots, logs and vegetation, plot ms3_2	MAP / METADATA	DATA
55	Surface features of rocks, roots, logs and vegetation, plot ms3_3	MAP / METADATA	DATA