Plant community patterns in a gypsum area of NE Spain. I. Interactions with topographic factors and soil erosion

1999 ◽  
Vol 41 (4) ◽  
pp. 401-410 ◽  
Author(s):  
Joaquı́n Guerrero-Campo ◽  
Francisco Alberto ◽  
John Hodgson ◽  
José Ma Garcı́a-Ruiz ◽  
Gabriel Montserrat-Martı́
1999 ◽  
Vol 41 (4) ◽  
pp. 411-419 ◽  
Author(s):  
Joaquı́n Guerrero-Campo ◽  
Francisco Alberto ◽  
Melchor Maestro ◽  
John Hodgson ◽  
Gabriel Montserrat-Martı́

CATENA ◽  
2006 ◽  
Vol 68 (2-3) ◽  
pp. 194-199 ◽  
Author(s):  
J.A. Martínez-Casasnovas ◽  
M.C. Ramos
Keyword(s):  
The Cost ◽  

1992 ◽  
Vol 3 (4) ◽  
pp. 429 ◽  
Author(s):  
Susan E. Meyer ◽  
Edmundo Garcia-Moya ◽  
Luz del Carmen Lagunes-Espinoza

2009 ◽  
Vol 13 (10) ◽  
pp. 1907-1920 ◽  
Author(s):  
M. Angulo-Martínez ◽  
M. López-Vicente ◽  
S. M. Vicente-Serrano ◽  
S. Beguería

Abstract. Rainfall erosivity is a major causal factor of soil erosion, and it is included in many prediction models. Maps of rainfall erosivity indices are required for assessing soil erosion at the regional scale. In this study a comparison is made between several techniques for mapping the rainfall erosivity indices: i) the RUSLE R factor and ii) the average EI30 index of the erosive events over the Ebro basin (NE Spain). A spatially dense precipitation data base with a high temporal resolution (15 min) was used. Global, local and geostatistical interpolation techniques were employed to produce maps of the rainfall erosivity indices, as well as mixed methods. To determine the reliability of the maps several goodness-of-fit and error statistics were computed, using a cross-validation scheme, as well as the uncertainty of the predictions, modeled by Gaussian geostatistical simulation. All methods were able to capture the general spatial pattern of both erosivity indices. The semivariogram analysis revealed that spatial autocorrelation only affected at distances of ~15 km around the observatories. Therefore, local interpolation techniques tended to be better overall considering the validation statistics. All models showed high uncertainty, caused by the high variability of rainfall erosivity indices both in time and space, what stresses the importance of having long data series with a dense spatial coverage.


Biotropica ◽  
2019 ◽  
Vol 51 (2) ◽  
pp. 155-164 ◽  
Author(s):  
Daniel A. Chaves ◽  
Suelma Ribeiro-Silva ◽  
Carolyn E. B. Proença ◽  
Washington L. Oliveira ◽  
João Bernardo A. Bringel ◽  
...  

2004 ◽  
Vol 131 (3) ◽  
pp. 232 ◽  
Author(s):  
Myla F. J. Aronson ◽  
Colleen A. Hatfield ◽  
Jean Marie Hartman

2017 ◽  
Vol 10 (2-3) ◽  
pp. 197-215 ◽  
Author(s):  
Mohammed El Madihi ◽  
Laila Rhazi ◽  
Maarten Van den Broeck ◽  
Mouhssine Rhazi ◽  
Aline Waterkeyn ◽  
...  

2006 ◽  
Vol 15 (4) ◽  
pp. 497 ◽  
Author(s):  
Jill F. Johnstone

The present study used overlapping burn scars from natural wildfires to examine the effects of changes in the fire-free interval on early successional plant communities in boreal forests of central Yukon Territory, Canada. Data on plant community composition and residual organic material were collected in the first decade of post-fire regeneration in two study areas with recent fire overlap. Sites with a shorter fire-free interval had reduced loads of deadwood and shallower organic layers after the most recent fire. Multivariate analysis of species cover indicated that sites in and out of the burn overlap zones also supported distinct plant communities. Differences in the plant communities were associated with a greater abundance of woody deciduous species, such as Populus tremuloides, Salix spp., and Shepherdia canadensis, at sites that had recently re-burned. Sites that burned after a longer interval had higher moss cover and greater abundance of Picea mariana, Calamagrostis canadensis, and Ribes glandulosum in one study area, and Epilobium angustifolium in the second area. Ordinations of species cover indicated that plant community patterns were most strongly associated with gradients related to fire history and topography. In general, shorter fire-free intervals reduced pools of residual plant material and favored dominance of resprouting, woody deciduous species.


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