Hierarchy and scale: Testing the long term role of water, grazing and nitrogen in the savanna landscape of Limpopo National Park (Mozambique)

Landscape Ecology

Volumn 25, Issue 10, 2010, Pages 1529-1546

  Ekblom, Anneli ^a   Gillson, Lindsey ^b  

^a UPPSALA UNIVERSITY   (Sweden)

^b UNIVERSITY OF CAPE TOWN   (South Africa)

Author keywords

Coprophilous spores; Fire; Hierarchical patch dynamics; Nitrogen; Pollen; Savanna ecology

Indexed keywords

CHARCOAL; COMPARATIVE STUDY; ENVIRONMENTAL DISTURBANCE; GRAZING PRESSURE; HERBIVORY; HIERARCHICAL SYSTEM; NITROGEN; NUTRIENT AVAILABILITY; PALEOECOLOGY; POLLEN; RAINFALL; RECRUITMENT (POPULATION DYNAMICS); SAVANNA; STABLE ISOTOPE; VEGETATION DYNAMICS; WATER AVAILABILITY; WILDFIRE;

GAZA; LIMPOPO NATIONAL PARK; LIMPOPO RIVER; MOZAMBIQUE;

BACTERIA (MICROORGANISMS); COPROPHILOUS;

EID: 78049314528     PISSN: 09212973     EISSN: 15729761     Source Type: Journal    
DOI: 10.1007/s10980-010-9522-x     Document Type: Article

References (69)

1. Aaby B, Digerfeldt B (1986) Sampling techniques for lakes bogs. In: Berglund BE (ed) Handbook of Holocene palaeoecology and palaeohydrology. Wiley, Chichester, pp 181-194.
2. Archibald S, Bond WJ, Stock WD, Fairbanks DHK (2005) Shaping the landscape: fire-grazer interactions in an African savanna. Ecol Appl 15: 96-109.
3. Belsky AJ (1995) Spatial and temporal landscape patterns in arid and semi-arid African savannas. In: Hansson L, Fahrig L, Merrian G (eds) Mosaic landscapes and ecological processes. Chapman & Hall, London, pp 31-49.
4. Bennett KD (1996) Determination of the number of zones in a biostratigraphical sequence. New Phytol 132: 155-170.
5. Bennett KD (2000) Psimpoll 4. 25. (http://www. chrono. qub. ac. uk/psimpoll/psimpoll. html).
6. Bennett KD, Willis KJ (2001) Pollen. In: Smol JP, Birks HJB, Last WM (eds) Tracking environmental change using lake sediments. Kluwer, Dordrecht, pp 5-32.
7. Bond WJ, Midgley GF, Woodward FI (2003) What controls South African vegetation-climate or fire? S Afr J Bot 69: 79-91.
8. Bonnefille R, Riollet G (1980) Pollens des Savannes d'Afrique Orientale. Centre National de la Recherche Scientifique, Paris.
9. Brenner M, Hodell DA, Leyden BW et al (2006) Mechanisms for organic matter and phosphorus burial in sediments of a shallow, subtropical, macrophyte-dominated lake. J Paleoclimatol 35: 129-148.
10. Buck CE, Christen JA, James GN (1999) BCal: an on-line Bayesian radiocarbon calibration tool. Internet Archaeol 7. http://bcal. sheffield. ac. uk.
11. Burney DA, Robinson GS, Burney LP (2003) Sporomiella and the late Holocene extinctions in Madagascar. Proc Natl Acad Sci USA 100: 10800-10805.
12. Clark JS (1988) Stratigraphic charcoal analysis on petrographic thins sections, application to fire history in northwestern Minnesota. Quat Res 30: 81-91.
13. Coughenour MB, Ellis JE (1993) Landscape and climatic control of woody vegetation in a dry tropical ecosystem, Turkana District, Kenya. J Biogeogr 20: 383-398.
14. Davis OK (1987) Spores of the dung fungus Sporormiella: increased abundance in historic sediments and before Pleistocene megafaunal extinction. Quat Res 28: 290-294.
15. Davis OK, Shafer DS (2006) Sporormiella fungal spores, a palynological means of detecting herbivore density. Palaeogeogr Palaeoclimatol Palaeoecol 237: 40-50.
16. Duffin KI, Gillson L, Willis KJ (2008) Testing the sensitivity of charcoal as an indicator of fire events in savanna environments: quantitative predictions of fire proximity, area and intensity. Holocene 18: 279-291.
17. Ebersohn C, Eicker A (1992) Coprophilous fungal species composition and species diversity on various dung substrates of African game animals. Bot Bull Acad Sin 33: 85-95.
18. Ekblom A, Gillson L (2010a) Fire history and fire ecology of northern kruger (KNP) and Limpopo national park (PNL), southern Africa. Holocene. doi: 10. 1177/0959683610369499.
19. Ekblom A, Gillson L (2010b) Dung fungi as indicators of past herbivore abundance, Kruger and Limpopo National park. Palaeogeogr Palaeoclimatol Palaeoecol 296: 14-27.
20. Faegri K, Iversen J (1992) Textbook of pollen analysis. Chichester, Wiley.
21. FAO (2004) Drought impact mitigation and prevention in the Limpopo River Basin. A situation analysis. FAO Subregional Office for Southern and East Africa, Harare.
22. Finsinger W, Tinner W (2005) Minimum count sums for charcoal-concentration estimates in pollen slides, accuracy and potential errors. Holocene 15: 293-297.
23. Fulco L, de Kroon H, Prins HHT, Berendse F (2001) Effects of nutrients and shade on tree-grass interactions in an East Africa savanna. J Veg Sci 12: 579-588.
24. Gillson L (2004) Evidence of hierarchical patch dynamics in an east African savanna? Landscape Ecol 19: 883-894.
25. Gillson L, Duffin KI (2007) Thresholds of potential concern as benchmarks in the management of African savannahs. Philos Trans R Soc Lond 362: 309-319.
26. Gillson L, Ekblom A (2009a) Untangling anthropogenic and climatic influence on riverine forest in the Kruger National Park, South Africa. Veg Hist Archaeobot 18: 171-185.
27. Gillson L, Ekblom A (2009b) Phase and transition in savannas, nitrogen ecology, plant available moisture and fire as drivers and responders in ecosystem change. Ecosystems 12: 1189-1203.
28. Graf MT, Chmura GL (2006) Development of modern analogues for natural, mowed and grazed grasslands using pollen assemblages and coprophilous fungi. Rev Palaeobot Palynol 141: 139-149.
29. Higgins S, Bond WJ, Trollope WS (2000) Fire, resprouting and variability, a recipe for grass-tree coexistence in savanna. J Ecol 88: 213-229.
30. Holmgren K, Karlén W, Lauritzen SE et al (1999) A 3000-year high-resolution stalagmite-based record of palaeoclimate for northeastern South Africa. Holocene 9: 295-309.
31. Holmgren K, Tyson PD, Moberg A, Svanered O (2001) A preliminary 3000-year regional temperature reconstruction for South Africa. S Afr J Sci 97: 49-51.
32. Holmgren K, Lee-Thorpe J, Cooper GRJ et al (2003) Persistent millennial-scale climatic variability over the past 25, 000 years in Southern Africa. Quat Sci Rev 22: 2311-2326.
33. Huffman TN (2008) Climate change during the iron age in the Shashe-Limpopo basin, southern Africa. J Archaeol Sci 35: 2032-2047.
34. Jacobsen GL, Bradshaw RHW (1981) The selection of sites for paleovegetational studies. Quat Res 16: 80-96.
35. Jarzen DM, Elsik WC (1986) Fungal palynomorphs recovered from recent river deposits, Luangwa Valley, Zambia. Rev Palaeobot Palynol 10: 35-60.
36. Jeltsch F, Weber GE, Grimm V (2000) Ecological buffering mechanisms in savannas, a unifying theory of long-term tree-grass coexistence. Plant Ecol 161: 161-171.
37. Lee-Thorp JA, Holmgren K, Lauritzen S et al (2001) Rapid climate shifts in the southern African interior throughout the mid to late Holocene. Geophys Res Lett 28: 4507-4510.
38. Levick S, Rogers K (2008) Patch and species specific responses of savanna woody vegetation to browser exclusion. Biol Conserv 141: 489-498.
39. Maher LJ Jr (1981) Statistics for microfossil concentration measurements employing samples spiked with marker grains. Rev Palaeobot Palynol 32: 153-191.
40. Marinova E, Atanassova J (2006) Anthropogenic impact on vegetation and environment during the Bronze Age in the area of Lake Durankulak, NE Bulgaria, pollen, microscopic charcoal, non-pollen palynomorphs and plant macrofossils. Rev Palaeobot Palynol 141: 165-178.
41. McCormack FG, Hogg AG, Blackwell PG et al (2004) SHCal04 Southern Hemisphere Calibration 0-1000 cal BP. Radiocarbon 46: 1087-1092.
42. McLauchlan KK, Craine JM, Oswald WW et al (2007) Changes in nitrogen cycling during the past century in a northern hardwood forest. Proc Natl Acad Sci USA 104: 7466-7470.
43. Meyers PA (2003) Application of organic geochemnistry to paleolimnological reconstructions, a summary of examples from the Laurentian Great Lakes. Org Geochem 34: 261-189.
44. Meyers PA, Lallier-Vergès E (1999) Lacustrine sedimentary organic matter records of late Quaternary paleoclimates. J Paleolimnol 21: 345-372.
45. Mills AJ, Fey MV (2005) Interactive response of herbivores, soils and vegetation to annual burning in a South African savanna. Austral Ecol 30: 435-444.
46. Mitchell P (2003) The archaeology of Southern Africa. Cambridge University press, Cambridge.
47. Pickett S, Kolasa J, Armesto J, Collins S (1989) The ecological concept of disturbance and its expression at various hierarchical levels. Oikos 54: 129-136.
48. Prentice C (1985) Pollen representation, source area, and basin size, toward a unified theory of pollen analysis. Quat Res 23: 76-85.
49. Raper D, Bush M (2009) A test of Sporormiella representation as a predictor of megaherbivore presence and abundance. Quat Res 71: 490-496.
50. 210Pb dating of sediments. Verh Int Ver Limnol 25: 217-222.
51. Robinson GS, Burney LP, Burney DA (2005) Landscape palaeoecology and megafaunal extinction in southeastern New York State. Ecol Monogr 75: 295-315.
52. Sankaran M, Ratnam J, Hanan NP (2004) Tree grass coexistence in savannas revisited, insights from an examination of assumptions and mechanisms invoked in existing models. Ecol Lett 7: 480-490.
53. Sankaran M, Hanan NP, Scholes RJ et al (2005) Determinants of woody cover in African savannas. Nature 438: 846-849.
54. Scholes RJ, Archer RS (1997) Tree-grass interactions in savannas. Annu Rev Ecol Syst 28: 517-544.
55. Scholes RJ, Bond WJ, Eckhardt HC (2003) Vegetation dynamics in the Kruger ecosystem. In: du Toit JT, Rogers KH, Biggs HC (eds) The Kruger experience. Ecology and management of savanna heterogeneity. Island Press, Washington, pp 242-262.
56. Scott L (1982) Late quaternary fossil pollen grains from the Transvaal, South Africa. Rev Palaeobot Palynol 36: 241-278.
57. Stockmarr J (1971) Tablets with spores used in absolute pollen analysis. Pollen Spores 13: 614-621.
58. Talbot MR, Lærdal T (2000) The late Pleistocene-Holocene paleolimnology of Lake Victoria, East Africa, based upon elemental and isotopic analyses of sedimentary organic matter. J Paleolimnol 23: 141-164.
59. Tyson PD, Preston Whyte RA (2000) The weather and climate of Southern Africa. Oxford University Press, Oxford.
60. Tyson PD, Karlén W, Holmgren K, Heiss GA (2000) The Little Ice Age and medieval warming in South Africa. S Afr J Sci 96: 121-126.
61. Tyson PD, Odada EO, Partridge TC (2001) Late quaternary environmental change in Southern Africa. S Afr J Sci 97: 139-150.
62. Urban D, O'Neill RV, Shugart HH Jr (1987) Landscape ecology. A hierarchical perspective can help scientists understand spatial patterns. Bioscience 37: 119-127.
63. van Geel B, Aptroot A (2006) Fossil ascomycetes in quaternary deposits. Nova Hedwig 82: 313-329.
64. van Geel B, Hallewas DP, Pals JP (1983) A late Holocene deposit under the Westfriese Zeedijk near Enkhuizen (Prov. of N-Holland, The Netherlands), palaeoecological and archaeological aspects. Rev Palaeobot Palynol 38: 269-335.
65. van Geel B, Buurman J, Brinkkemper O, Schelvis J, Aptroot A, van Reenen G, Hakbijl T (2003) Environmental reconstruction of a Roman Period settlement site in Uitgeest (The Netherlands), with special reference to coprophilous fungi. J Archaeol Sci 30: 873-883.
66. van Langevelde F, van de Vijver CADM, Kumar L, van de Koppel J, de Ridder N, van Andel J, Skidmore AK, Hearne JW, Stroosnejder L, Bond WJ, Prins HT, Rietkerk M (2003) Effects of fire and herbivory on the stability of savanna ecosystems. Ecology 84: 337-350.
67. van Wilgen BW, Govender N, Biggs HC, Ntsala D, Funda XN (2004) Response of savanna fire regimes to changing fire management policies in a large African National Park. Conserv Biol 18: 1533-1540.
68. Wild H, Fernandes A (1968) Vegetation map of the flora Zambesiaca area, supplement. Flora Zambesiaca. The Government Printer, Salisbury.
69. Wu J (1999) Hierarchy and scaling: extrapolating information along a scaling ladder. Can J Remote Sens 25: 367-380.