Summary
A factorial field experiment was designed to test the effects of small mammals and above- and below-ground invertebrates on plant species richness and composition in native tallgrass prairie at Konza Prairie Research Natural Area, northeast Kansas. Over a 4-year period, Microtus ochrogaster densities were maintained by live-trapping in fenced plots, and invertebrate levels were reduced using the pesticides carbaryl for above-ground invertebrates and an organophosphate (isofenphos) for belowground invertebrates. ANOVA according to a split-plot design of plant species biomass data harvested in 1984 and 1986 revealed few significant effects of either small mammal densities or pesticide application. Of 54 species harvested from both sample dates, only 10 were significantly affected by either treatment. Analysis of species richness according to 8 life-form classes provided a clearer pattern of response than did biomass either by species or life-form class. For example, numbers of C4 grasses were reduced by increasing small mammal densities, whereas numbers of C4 annual forbs were lowest when above-ground herbivory was reduced. While consumers have been shown to have strong effects on successional communities, the few significant results observed in this study suggests that the manipulated levels of small mammals and insects had few effects on a mature tallgrass prairie.
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References
Abrams MD, Hulbert LC (1987) Effect of topographic position and fire on species composition in tallgrass prairie in northeast Kansas. Am Mid Nat 117:442–445
Borror DJ, DeLong DM, Triplehorn CA (1976) An introduction to the study of insects 4th ed. Holt, Rinehart and Winston NY
Brown VK (1985) Insect herbivores and plant succession. Oikos 44:17–22
Brown VK, Gange AC (1989) Differential effects of above- and below-ground insect herbivory during early plant succession. Oikos 54:67–76
Brown VK, Southwood TRE (1987) Secondary succession: patterns and strategies. In: Gray AJ, Crawley MJ, Edwards PJ (eds) Colonization, succession and stability, Blackwell Scientific Publications, Oxford
Brown VK, Leijn M, Stinson CSA (1987) The experimental manipulation of herbivore load by the use of an insecticide (malathion): the effect of application on plant growth. Oecologia 72:377–381
Brown VK, Jepsen M, Gibson CWD (1988) Insect herbivory: effects on early old field succession demonstrated by chemical exclusion methods. Oikos 52:293–302
Clements R, Henderson I (1979) Insects as a cause of botanical change in swards. J Brit Grass Soc Occ Symp 10:157–160
Cochran WG, Cox GM (1957) Experimental Designs (2nd Edit) John Wiley and Sons, New York
Crawley MJ (1983) Herbivory: The dynamics of animal-plant interactions. Blackwell Scientific Publications, Oxford
Edwards PJ, Gillman MP (1987) Herbivores and plant succession. In: Gray AJ, Crawley MJ, Edwards PJ (eds) Colonization, succession and stability. Blackwell Scientific Publications, Oxford
Evans EW (1989) Interspecific interactions among phytophagous insects of tallgrass prairie: an experimental test. Ecology 70:435–444
Fleharty ED, Olson LE (1969) Summer food habitats of Microtus ochrogaster and Sigmodon hispidus. J Mammal 50:475–486
Finck EJ, Kaufman DW, Kaufman GA, Gurtz SK, Clark BK, McLellan LJ, Clark BS (1986) Mammals of the Konza Prairie Research Natural Area, Kansas. Prairie Naturalist 18:153–166
Freeman CC, Gibson DJ (1987) Additions to the vascular flora of Konza Prairie Research Natural Area, Kansas. Trans Kansas Acad Sci 96:81–84
Freeman CC, Hulbert LC (1985) An annotated list of the vascular flora of Konza Prairie Research Natural Area, Kansas. Trans Kansas Acad Sci 88:84–115
Gibson DJ (1988) Regeneration and fluctuation of tallgrass prairie vegetation in response to burning frequency. Bull Torrey Bot Club 115:1–12
Gibson DJ (1989) Effects of animal disturbance on tallgrass prairie vegetation. Am Mid Nat 121:144–154
Gibson DJ, Hulbert LC (1987) Effects of fire, topography and year-to-year climatic variation on species composition in tall-grass prairie. Vegetatio 72:175–185
Henderson IF, Clements RO (1974) The effect of pesticides on the yield and botanical composition of a newly-sown ryegrass ley and of an old mixed pasture. J Br Grassld Soc 29:185–190
Henderson IF, Clements RO (1977) Grass growth in different parts of England in relation to invertebrate numbers and pesticide treatment. J Br Grassld Soc 32:89–98
Hulbert LC (1973) Management of Konza Prairie to approximate pre-white-man fire influences. In: Third Midwest Prairie Conference Proceedings. Division of Biology, Kansas State University, Manhattan, Kansas
Ingham ER, Trofymow JA, Ames AN, Hunt HW, Morley CR, Moore JC, Coleman DC (1986) Trophic interactions and nitrogen cycling in a semi-arid grassland soil II. System responses to removal of different groups of soil microbes or fauna. J Appl Ecol 23:615–630
Krebs CJ, Keller BL, Tamarin RH (1969) Microtus population biology: demographic changes in fluctuating populations of M. ochrogaster and M. pennsylvanicus in southern Indiana. Ecol 50:587–607
Marzolf R (1988) Konza Prairie Research Natural Area of Kansas State University. Trans Kansas Acad Sci 91:24–29
McBrien H, Harmsen R, Crowder A (1983) A case of insect grazing affecting plant succession. Ecology 64:1035–1039
Mitchell JE, Pfadt RE (1974) A role of grasshoppers in a shortgrass prairie ecosystem. Environ Entomol 3:358–360
Morton AJ (1974) Ecological studies of a fixed dune grassland at Newborough Warren, Anglesey. II. Casual factors of the grassland structure. J Ecol 62:261–278
Mushinsky HR, Gibson DJ (1990) The influence of fire periodicity an habitat structure. In: Bell SS, McCoy ED, Mushinsky HR (eds) Habitat complexity: the physical arrangement of objects in space. Chapman & Hall (in press)
Peterson SK, Kaufman GA, Kaufman DW (1985) Habitat selection by small mammals of the tall-grass prairie: experimental patch choice. Prairie Nat 17:65–70
Seastedt TR, Todd TC, James SW (1987) Experimental manipulations of the arthropod, nematode and earthworm communities in a North American tallgrass prairie. Pedobiologia 30:9–17
Seastedt TR, James SW, Todd TC (1988) Interactions among soil invertebrates, microbes and plant growth in tallgrass prairie. Agric Ecosyst Envir 24:219–228
Shure DJ (1971) Insecticide effects on early succession in an old-field ecosystem. Ecology 52:271–279
Watt AS (1981) Further observations on the effect of excluding rabbits from grassland A in East Anglian breckland: the pattern of change and factors affecting it (1936–1973). J Ecol 69:509–536
Zimmerman EG (1965) A comparison of habitat and food of two species of Microtus. J Mammal 46:605–612
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Deceased May, 1986
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Gibson, D.J., Freeman, C.C. & Hulbert, L.C. Effects of small mammal and invertebrate herbivory on plant species richness and abundance in tallgrass prairie. Oecologia 84, 169–175 (1990). https://doi.org/10.1007/BF00318268
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DOI: https://doi.org/10.1007/BF00318268