Volume-biomass functions reveal the effect of browsing on three Moroccan dwarf shrubs

African Journal of Range and Forage Science

Volumn 29, Issue 1, 2012, Pages 31-36

  Akasbi, Z ^a,b   Oldeland, J ^a   Dengler, Jürgen ^a   Finckh, M ^a  

^a UNIVERSITY OF HAMBURG   (Germany)

^b INSTITUT AGRONOMIQUE ET VÉTÉRINAIRE HASSAN II   (Morocco)

Author keywords

allometric function; Atlas Mountains; nonlinear regression; permanent plot; plant architecture; standing biomass

Indexed keywords

ARTEMISIA; ARTEMISIA HERBA-ALBA; ARTEMISIA TRIDENTATA; TEUCRIUM;

EID: 84861935753     PISSN: 10220119     EISSN: 17279380     Source Type: Journal    
DOI: 10.2989/10220119.2012.687074     Document Type: Article

References (25)

1. Abdelkader, I, Ferchichi, A and Chaieb, M. 2008. Estimation of aboveground biomass of Artemisia herba-alba in Tunisian Arid Zone. International Journal of Botany, 4: 109-112.
2. Abrams, MD, Knapp, KA and Hulbert, CL. 1986. A ten-year record of aboveground biomass in a Kansas tallgrass prairie: effects of fire and topographic position. American Journal of Botany, 73: 1509-1515.
3. Baumann G. 2009. How to assess rangeland condition in semiarid ecosystems? The indicative value of vegetation in the High Atlas Mountains, Morocco. PhD thesis, University of Cologne, Germany.
4. Ben Salem, H, Nefzaoui, A and Abdouli, H. 1994. Palatability of shrubs and fodder trees measured on sheep and dromedaries: 1. Methodological approach. Animal Feed Science and Technology, 46: 143-153.
5. Born, K, Fink, A and Paeth, H. 2008. Dry and wet periods in the northwestern Maghreb for present day and future climate conditions. Meteorologische Zeitschrift, 17: 533-551.
6. Cook, CW and Stubbendieck, J. 1986. Range research: basic problems and techniques, Denver: Society for Range Management.
7. Finckh, M and Goldbach, H. 2010. "Vegetation dynamics under climate stress and land use pressure in the Draa catchment". In Impacts of global change on the hydrological cycle in West and Northwest Africa, Edited by: Speth, P, Christoph, M and Diekkrüger, B. 122-131. Heidelberg: Springer.
8. Freier, LP, Schneider, UA and Finckh, M. 2011. Dynamic interactions between vegetation and land-use in arid environments: using a Markov process for modeling Moroccan rangelands under climate change, Agriculture. Ecosystems and Environment, 140: 462-472.
9. Gresens F. 2006. Untersuchungen zum Wasserhaushalt ausgewählter Pflanzenarten im Drâa-Tal-Südost Marokko. PhD thesis, University of Bonn, Germany.
10. Hammer Ø, Harper DAT, Ryan PD. 2001. PAST: Paleontological Statistics software package for education and data analysis. Palaeontologia Electronica 4 1: 1-9. Available athttp://palaeo-electronica.org/2001_1/past/past.pdf.
11. Kawamura, K, Akiyama, T, Watanabe, O, Hasegawa, H, Zhangh, FP, Yokota, HO and Wang, S. 2003. Estimation of aboveground biomass in Xilingol steppe, Inner Mongolia using NOAA/NDVI. Grassland Science, 49: 1-9.
12. Le Houérou HN 1980. Browse in Africa. The current state of knowledge. Paper presented at the International Symposium on Browse in Africa, Addis Ababa, 8-12 April 1980. ILCA (International Livestock Centre for Africa), Addis Ababa, Ethiopia.
13. Le Houérou, HN and Hoste, CH. 1977. Rangeland production and annual rainfall relations in the Mediterranean Basin and in the African Sahelo-Sudanian Zone. Journal of Range Management, 30: 181-189.
14. Mahler D. 2010. Raumnutzungsmuster von Weidetieren im südlichen Atlasvorland. Staatsexamen thesis, University of Hamburg, Germany.
15. Manly, BFJ. 2007. Randomization, bootstrap and Monte Carlo methods in biology, 3rd edn, Boca Raton: Chapman and Hall/ CRC Press.
16. Motulsky, H and Christopoulos, A. 2004. Fitting models to biological data using linear and nonlinear regression-a practical guide to curve fitting, New York: Oxford University Press.
17. Paton, D, Nuñez, J, Bao, D and Muñoz, A. 2002. Forage biomass of 22 shrub species from Monfragüe Natural Park (SW Spain) assessed by log-log regression models. Journal of Arid Environments, 52: 223-231.
18. Patton, BD, Dong, X, Nyren, PE and Nyren, A. 2007. Effects of grazing intensity, precipitation, and temperature on forage production. Rangeland Ecology and Management, 60: 656-665.
19. Quinn, GP and Keough, MJ. 2002. Experimental design and data analysis for biologists, Cambridge: Cambridge University Press.
20. Schulz, O, Finckh, M and Goldbach, H. 2010. "Hydro-meteorological measurements in the Drâa catchment". In Impacts of global change on the hydrological cycle in West and Northwest Africa, Edited by: Speth, P, Chritoph, M and Diekkrüger, B. 122-131. Heidelberg: Springer.
21. SENS. 2005. Etude relative à l'inventaire participatif, identification et évaluation des sites clé de la biodiversité dans le versant sud du Haut Atlas (document de synthèse). Projet MOR 99/G33/A /1G/99. Ouarzazate: SENS. pp 1-72.
22. StatSoft Inc. 2007. STATISTICA für Windows (Software-System für Datenanalyse) Version 8.0. URL: www.statsoft.com.
23. Tausch, RJ. 1989. Comparison of regression methods for biomass estimation of sagebrush and bunchgrass. Great Basin Naturalist, 49: 373-380.
24. Usó, JL, Mateu, J, Karjalainen, T and Salvador, P. 1997. Allometric regression equations to determine aerial biomasses of Mediterranean shrubs. Plant Ecology, 132: 59-69.
25. Xiao, X, Chen, D, Peng, Y, Cui, X and Ojima, DS. 1996. Observation and modelling of plant biomass of meadow steppe in Tumugi, Xingan league, Inner Mongolia, China. Vegetatio, 127: 191-201.