Synergic hydraulic and nutritional feedback mechanisms control surface patchiness of biological soil crusts on tertiary sands at a post-mining site

[img]
Preview
PDF
Language: English
1324Kb
Title:Synergic hydraulic and nutritional feedback mechanisms control surface patchiness of biological soil crusts on tertiary sands at a post-mining site
Creators:
Fischer, Thomas; thomas dot fischer at tu-cottbus dot de; Brandenburg University of Technology Cottbus-Senftenberg, Central Analytical Laboratory, Konrad-Wachsmann-Allee 6, 03046 Cottbus, Germany.
Gypser, Stella; stellagypser at yahoo dot de; Brandenburg University of Technology Cottbus-Senftenberg, Central Analytical Laboratory, Konrad-Wachsmann-Allee 6, 03046 Cottbus, Germany.
Subbotina, Maria; subbotina at mail dot ru; Permian State Agricultural Academy, 23 Petropavlovskaya str., Perm 614990, Russia.
Veste, Maik; maik dot veste at me dot com; CEBra - Centre for Energy Technology Brandenburg e.V., Friedlieb-Runge-Straße 3, 03046 Cottbus, Germany.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 62, 4, pp. 293-302
Uncontrolled Keywords:recultivation, pyrite weathering, bistable ecosystems

Abstract

In a recultivation area located in Brandenburg, Germany, five types of biocrusts (initial BSC1, developed BSC2 and BSC3, mosses, lichens) and non-crusted mineral substrate were sampled on tertiary sand deposited in 1985–1986 to investigate hydrologic interactions between crust patches. Crust biomass was lowest in the non-crusted substrate, increased to the initial BSC1 and peaked in the developed BSC2, BSC3, the lichens and the mosses. Water infiltration was highest on the substrate, and decreased to BSC2, BSC1 and BSC3. Non-metric multidimensional scaling revealed that the lichens and BSC3 were associated with water soluble nutrients and with pyrite weathering products, thus representing a high nutrient low hydraulic feedback mode. The mosses and BSC2 represented a low nutrient high hydraulic feedback mode. These feedback mechanisms were considered as synergic, consisting of run-off generating (low hydraulic) and run-on receiving (high hydraulic) BSC patches. Three scenarios for BSC succession were proposed. (1) Initial BSCs sealed the surface until they reached a successional stage (represented by BSC1) from which the development into either of the feedback modes was triggered, (2) initial heterogeneities of the mineral substrate controlled the development of the feedback mode, and (3) complex interactions between lichens and mosses occurred at later stages of system development.

Official URL: http://147.213.145.2/vc/vc1.asp

Title:Synergic hydraulic and nutritional feedback mechanisms control surface patchiness of biological soil crusts on tertiary sands at a post-mining site
Translated title:Synergic hydraulic and nutritional feedback mechanisms control surface patchiness of biological soil crusts on tertiary sands at a post-mining site
Creators:
Fischer, Thomas; thomas dot fischer at tu-cottbus dot de; Brandenburg University of Technology Cottbus-Senftenberg, Central Analytical Laboratory, Konrad-Wachsmann-Allee 6, 03046 Cottbus, Germany.
Gypser, Stella; stellagypser at yahoo dot de; Brandenburg University of Technology Cottbus-Senftenberg, Central Analytical Laboratory, Konrad-Wachsmann-Allee 6, 03046 Cottbus, Germany.
Subbotina, Maria; subbotina at mail dot ru; Permian State Agricultural Academy, 23 Petropavlovskaya str., Perm 614990, Russia.
Veste, Maik; maik dot veste at me dot com; CEBra - Centre for Energy Technology Brandenburg e.V., Friedlieb-Runge-Straße 3, 03046 Cottbus, Germany.
Uncontrolled Keywords:recultivation, pyrite weathering, bistable ecosystems
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:62
Number:4
Page Range:pp. 293-302
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:8351
Item Type:Article
Deposited On:08 Jan 2015 18:41
Last Modified:08 Jan 2015 17:41

Citation

Fischer, Thomas; Gypser, Stella; Subbotina, Maria; Veste, Maik (2014) Synergic hydraulic and nutritional feedback mechanisms control surface patchiness of biological soil crusts on tertiary sands at a post-mining site. Journal of Hydrology and Hydromechanics, 62 (4). pp. 293-302. ISSN 0042-790X

Repository Staff Only: item control page