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Interactions between detritivores and microfungi during the leaf detritus decomposition in a volcanic lake (Lake Vico – central Italy)

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Abstract

The role of biota in the mass loss of Phragmites australis (Cav.) Trin. ex Steud was studied in the littoral belt of a central Italy volcanic lake. The research focussed on the feeding interactions between detritivores and decomposing fungi as drivers of the leaf litter decomposition. The litterbag technique was used to assess the leaf mass loss, the number of colonizing fungi and the patterns of leaf colonization by detritivores during 40 days of submersion in 16 sampling sites. Cores of bottom sediment were collected to estimate the organic content and ergosterol concentration as measure of fungal mass. The rate of leaf mass loss showed significant variability among the sampling sites and was non-linearly related to the quantity of organic depositions onto the lake bottom, peaking at about 40% of the dry matter. The rate was also positively correlated with the density of detritivore mass relative to the leaf unit mass, which increased with time. On the 20th day of litterbag immersion, when 40% of the initial leaf litter remained, we observed the best accordance between the two measures as well as the lowest difference in the detritivore mass density among sampling sites. In the absence of animals, the decomposition rate was positively related to the number of fungi on the decaying litter. The feeding activity of detritivores changed both the species richness and composition of the fungal community on the litter. The substrate reduction due to intense animal feeding appeared to limit the ability of fungi to regrow after grazing. As a result, an inverse relationship between the number of fungi and the decomposition rate was observed.

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References

  • Anderson, P., C. M. Davidson, D. Littlejohn & A. M. Ure, 1994. Extraction of ergosterol from peaty soil and determination by high performance liquid chromatography. Talanta 41: 711–720.

    Google Scholar 

  • Arsuffi, T. L. & K. Suberkropp, 1989. Selective feeding by shredders on leaf-colonizing stream fungi: comparison of macroinvertebrate taxa. Oecologia 79: 30–37.

    Google Scholar 

  • Baldy, V., M. O. Gessner & E. Chauvet, 1995. Bacteria, fungi and the breakdown of leaf litter in a large river. Oikos 74: 93–102.

    Google Scholar 

  • Barbanti, L. 1969. Lago di Vico: rilevamento batimetrico e note geomorfologiche. Mem. Ist. ital. Idrobiol. 25: 117–139.

    Google Scholar 

  • Barbanti, L., G. Bonomi, A. Carollo, G. Chiaudani, I. Ferrari, M. Gerletti, A. M. Nocentini, D. Ruggiu & L. Tonolli, 1971. Limnologia ed ecologia dei laghi di Bolsena, Bracciano, Trasimeno e Vico: situazione attuale e prevedibili conseguenze derivanti da una loro utilizzazione multipla. Ist. ital. Idrobiol., Verbania Pallanza.

    Google Scholar 

  • Bärlocher, F., 1982. The contribution of fungal enzymes to the digestion of leaves by Gammarus fossarum Koch (Amphipoda). Oecologia 52: 1–4.

    Google Scholar 

  • Bärlocher, F., 1985. The role of fungi in the nutrition of stream invertebrates. Bot. J. linn. Soc. 91: 83–94.

    Google Scholar 

  • Bärlocher, F. & B. Kendrick, 1980. The role of aquatic hyphomycetes in trophic structure of stream. In Wicklow D. T. & G. C. Carrol (eds), The Fungal Community, its Organisation and Role in the Ecosystem. Marcel Dekker Inc. New York.

    Google Scholar 

  • Bazzanti, M., M. Seminara & C. Tamorri, 1994. Depth distribution and relationships to the trophic state of sublittoral and profundal macrobenthos in Lake Vico (Central Italy). Limnologica 24: 13–21.

    Google Scholar 

  • Beiser, M. C., S. Testa III & N. G. Aumen, 1991. Macroinvertebrate trophic composition and processing of four leaf species in a Mississippi stream. J. Freshwat. Ecol. 6: 23–33.

    Google Scholar 

  • Benfield, E. F. & J. R. Webster, 1985. Shredders abundance and leaf breakdown in an Appalachian Mountain stream. Freshwat. Biol. 15: 113–120.

    Google Scholar 

  • Carollo, A., L. Barbanti, M. Gerletti, G. Chiaudani, I. Ferrari, A. M. Nocentini, G. Bonomi, D. Ruggiu & L. Tonolli, 1974. Indagini imnologiche sui laghi di Bolsena, Bracciano, Vico e Trasimeno. Quaderni IRSA, CNR, n.17: 16–20.

  • Carpenter, S. R., 1982. Comparisons of equations for decay of leaf litter in tree-hole ecosystems. Oikos 39: 17–22.

    Google Scholar 

  • Carter, J. C. H., W. D. Taylor & C. Tudorancea, 1995. A horizontal gradient in zooplankton community structure, and its implications for the relationships among mesozooplancton, microzooplancton and phytoplankton. Arch. Hydrobiol. 133: 197–222.

    Google Scholar 

  • Caswell, H., 1978. Predator-mediated coexistence: a nonequilibrium model. Am. Nat. 112: 127–154.

    Google Scholar 

  • Chauvet, E., N. Giani & M. O. Gessner, 1993. Breakdown and Invertebrate colonization of leaf litter in two constrasting stream: significance of oligochaetes in a large river. J. Fish. aquat. Sci. 50: 488–495.

    Google Scholar 

  • Chergui, H. & E. Pattee, 1993. Fungal and invertebrate colonization of Salix fresh and dry leaves in a Moroccan river system. Arch. Hydrobiol. 127: 57–72.

    Google Scholar 

  • Cummins, K.W, 1974. Structure and function of stream ecosystems. BioScience 24: 631–641.

    Google Scholar 

  • Cummins, K. W. & M. J. Klug, 1979. Feeding ecology of stream invertebrates. Annu. Rev. Ecol. Syst. 10: 147–172.

    Google Scholar 

  • Cummins, K. W., M.A. Wilzbach, D. M. Gates, J. B. Perry & W. B. Talliaferro, 1989. Shredders and riparian vegetation. BioScience 39(1): 24–30.

    Google Scholar 

  • Dyer, M., 1994. The water quality at Lago di Vico during 1992–93. Sci. Tot. Envir. 171: 77–83.

    Google Scholar 

  • Fabre E. & E. Chauvet, 1998. Leaf breakdown along an altitudinal stream gradient. Arch. Hydrobiol. 141: 167–179.

    Google Scholar 

  • Fazi, S. & L. Rossi, 1996. Decomposition of leaf litter in saltmarsh ecosystem: weight loss rate vs. community metabolism. S.It.E. Atti 17: 435–438.

    Google Scholar 

  • Franzoi, P., F. Scialanca & G. Castaldelli, 1997. Lago di Vico (Italia Centrale): analisi delle principali variabili fisiche e chimiche delle acque in relazione all'evoluzione trofica. S.It.E. Atti 18: 159–160.

    Google Scholar 

  • Gessner, M. O., M. A. Bauchrowitz & Escautier, M. 1991. Extraction and quantification of ergosterol as a measure of fungal biomass in leaf litter. Microbiol. Ecol. 22: 285–291.

    Google Scholar 

  • Gessner, M. O. & E. Chauvet, 1993. Ergosterol-to-biomass conversion factors for aquatic hyphomycetes. Appl. Envir. Microbiol. 59: 502–507.

    Google Scholar 

  • Gessner, M. O. & E. Chauvet, 1994. Importance of stream microfungi in controlling breakdown rates of leaf litter. Ecology 75: 1807–1817.

    Google Scholar 

  • Gessner, M. O., B. Schieferstein, U. Müller, S. Barkmann & U. A. Lenfers, 1996. A partial budget of primary organic carbon flows in the littoral zone of a hardwater lake. Aquat. Bot. 55: 93–105.

    Google Scholar 

  • Gessner, M. O., 2000. Breakdown and nutrient dynamics of submerged Phragmites shoots in the littoral zone of a temperate hardwater lake. Aquat. Bot. 66: 9–20.

    Google Scholar 

  • Godfrey, B. E. S., 1983. Growth of two terrestrial microfungi on submerged alder leaves. Trans. Br. Mycol. Soc. 82: 418–421.

    Google Scholar 

  • Graça, M. A. S., 1992. Starvation and food selection by stream detritivores. Ciênc. Biol. Ecol. Syst. 12: 27–35.

    Google Scholar 

  • Graça, M. A. S., 1993. Patterns and processes in detritus-based stream systems. Limnologica 23: 107–114.

    Google Scholar 

  • Hanlon, R. D. G. & J.M. Anderson, 1980. Influence of macroarthropod feeding activities on microflora in decomposing oak leaves. Soil. Biol. Biochem. 12: 255–261.

    Google Scholar 

  • Iqbal, S. H. & J. Webster, 1973. Aquatic hyphomycete spora of the River Exe and its tributaries. Trans. Br.Mycol. Soc. 61: 331–346.

    Google Scholar 

  • Kaushik, N. B. & H. B. N. Hynes, 1968. Experimental study on the role of autumn-shed leaves in aquatic environments. J. Ecol. 56: 229–243.

    Google Scholar 

  • Kuehen K. A. & K. Suberkropp, 1998. Decomposition of standing litter of the freshwater emergent macrophyte Juncus effusus. Freshwat. Biol. 40: 717–727.

    Google Scholar 

  • Lousier, J. D. & D. Parchinson, 1976. Litter decomposition in a cool temperate deciduous forest. Can. J. Bot. 54: 419–436.

    Google Scholar 

  • Lubchenco, J., 1978. Plant species diversity in a marine intertidal community: importance of herbivore food preference and algal competitive abilities. Am. Nat. 112: 23–39.

    Google Scholar 

  • McArthur, J. V. & J. R. Barnes, 1988. Community dynamics of leaf litter breakdown in a Utah alpine stream. J. n. am. Benthol. Soc. 7: 37–43.

    Google Scholar 

  • Newell, S. Y., T. L. Arsuffi & R. D. Fallon, 1988. Fundamental procedures for determining ergosterol content of decaying plant material by liquid chromatography Appl. envir. Microbiol. 54: 1876–1879.

    Google Scholar 

  • Noy-Meir, I., 1995. Interactive effects of fire and grazing on structure and diversity of Mediterranean grasslands. J. Veg. Science 6: 701–710.

    Google Scholar 

  • Oertli B. & J. B. Lachavanne, 1995. The effect of shoot on colonization of an emergent macrophyte (Typha latifolia) by macroinvertebrates. Freshwat. Biol. 34: 421–431.

    Google Scholar 

  • Park, D., 1972. Method of detecting fungi in organic detritus in water. Trans. Br. Mycol. Soc. 58: 281–290.

    Google Scholar 

  • Park, D., 1980. A two year study of numbers of cellulolytic Pythium in river water. Trans. Br. Mycol. Soc. 74: 253–258.

    Google Scholar 

  • Petersen, R. C. & K. W. Cummins, 1974. Leaf processing in a woodland stream. Freshwat. Biol. 4: 343–368.

    Google Scholar 

  • Picciafuoco, L. & L. Rossi, 1985. Biological interactions in detritus processing in freshwater. S.It.E. Atti 5: 877–881.

    Google Scholar 

  • Proulx, M. & A. Mazumder, 1998. Reversal of grazing impact on plant species richness in nutriet-poor vs. nutrient-rich ecosystems. Ecology 79: 2581–2592.

    Google Scholar 

  • Quinn, G. P., P. S. Lake & E. S. G. Schreiber, 1998. A comparative study of colonization by benthos in a lake and its outflowing stream. Freshwat. Biol. 39: 623–635.

    Google Scholar 

  • Rosenberg, D.M. & V. H. Resh, 1982. The use of artificial substrate in the study of freshwater benthic macroinvertebrate. In Cairns, J.Jr (ed.), Artificial Substrates. Ann Arbor Science Publishers, Ann Arbor, MI.: 175–236.

    Google Scholar 

  • Rossi, L. & A. E. Fano, 1979. Role of fungi in the trophic niche of the congeneric detritivorous Asellus aquaticus and A. coxalis (Isopoda). Oikos 32: 380–385.

    Google Scholar 

  • Rossi, L., A. E. Fano, A. Basset, C. Fanelli & A. A. Fabbri, 1983. An experimental study of a microfungal community on plant detritus in a Mediterranean woodland stream. Mycologia 75: 887–896.

    Google Scholar 

  • Rossi, L., 1985. Interactions between invertebrates and microfungi in frehwater ecosistems. Oikos 44: 175–184.

    Google Scholar 

  • Rossi, L. & M. L. Costantini, 2000. Mapping the intra-habitat variation of leaf mass loss in a brackish Mediterranean lake. Marine Ecology Progress Series. 203: 145–159.

    Google Scholar 

  • Rounick, J. S. & M. J. Winterbourn, 1983. Leaf processing in two contrasting beech forest streams: effect of physical and biotic factors on litter breakdown. Arch. Hydrobiol. 96: 448–474.

    Google Scholar 

  • Saunders, G. W., 1976. Decomposition in freshwater. In Anderson, J. M. & A. Macfayden (eds), The Role of Terrestrial and Aquatic Organism in Decomposition Processes: Anderson, J. M. and Macfadyen, A. pp. 341–374.

  • Short, R. A. & J. V. Ward, 1980. Leaf litter processing in a regulated Rochy Mountain stream. Can. J. Fish. aquat. Sci. 37: 123–127.

    Google Scholar 

  • Short, R. A., S. P. Canton & J. W. Ward, 1980. Detrital processing and associated macroinvertebrates on a Colorado mountain stream. Ecology 61: 727–732.

    Google Scholar 

  • Sinsabaugh R. L. & S. Findlay, 1995. Microbial production, enzyme activity, and carbon turnover in surface sediments of the Hudson River estuary. Microbiol. Ecol. 30: 127–141.

    Google Scholar 

  • Suberkropp, K. & M. J. Klug, 1976. Fungi and bacteria associated with leaves during processing in a woodland stream. Ecology 57: 707–719.

    Google Scholar 

  • Suberkropp, K., T. L. Arsuffi & J. P. Anderson, 1983. Comparison of degradative ability, enzymatic activity and palatability of aquatic hyphomycetes grown on leaf litter Appl. envir. Microbiol. 46: 237–244.

    Google Scholar 

  • Suberkropp, K., 1992. Interactions with invertebrates. In Bärlocher, F. (ed.), The Ecology of Aquatic Hyphomycetes. Springer-Verlag, Heidelberg & New York: 118–134.

    Google Scholar 

  • Tansley, A. G. & R. S Adamson, 1925. Studies of the vegetation of the English chalk. III. The chalk grasslands of the Hampshire-Sussex border. J. Ecol. 13: 177–223.

    Google Scholar 

  • Wardle, D. A., K. I. Bonner & K. S. Nicholson, 1997. Biodiversity and plant litter: experimental evidence which does not support the view that enhanced species richness improves ecosystem function. Oikos 79: 247–258.

    Google Scholar 

  • Wetzel, R. G., 1983. Limnology, 2nd edn. Saunders College Publishing, Philadelphia, PA: 519–590.

    Google Scholar 

  • Wetzel, R. G., 1990. Land-water interfaces: metabolic and limnological regulators. Verh. int. Ver. Limnol. 24: 6–24.

    Google Scholar 

  • Willoughby, L. G., 1974. Decomposition of litter in fresh water. In: Dickinson, C. D. & G. J. F. Pugh (eds), Biology of Plant Litter Decomposition. London. Vol. 2, pp. 659–682.

  • Yodzis, P., 1978. Competition for Space and Structure of Ecological Communities. Lecture Notes in Biomathematics, No. 25. Springer /Berlin/Heidelberg/New York.

    Google Scholar 

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Authors and Affiliations

  1. Dept. of Genetics and Molecular Biology -Ecology Area-, University of Rome ‘La Sapienza’, Via dei Sardi 70, 00185, Rome, Italy

    L. Sabetta & M. L. Costantini

  2. Dip. Biologia vegetale, University of Rome ‘La Sapienza’, P. le Aldo Moro 5, 00185, Rome, Italy

    O. Maggi & A. M. Persiani

  3. Dept. of Genetics and Molecular Biology -Ecology Area-, University of Rome ‘La Sapienza’, Via dei Sardi 70, 00185, Rome, Italy

    L. Rossi

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  1. L. Sabetta
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  4. A. M. Persiani
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Sabetta, L., Costantini, M.L., Maggi, O. et al. Interactions between detritivores and microfungi during the leaf detritus decomposition in a volcanic lake (Lake Vico – central Italy). Hydrobiologia 439, 49–60 (2000). https://doi.org/10.1023/A:1004149602839

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