References - Restoration Ecology - page 280

Persson, T.S. (1995) Management of Roadside Verges:
Vegetation Changes and Species Diversity . Sveriges
Lantbrucksuniversitet Institutionen for Ekologi och
Miljovard, Report 82, Uppsala.
Peterson, C.H., Summerson, H.C. and Fegley, S.R. (1987)
Ecological consequences of mechanical harvesting of
clams. Fishery Bulletin 85 , 281-98.
Peterson, S.A. (1981) Sediment Removal as a Lake Res-
toration Technique . Corvallis Environmental Research
Laboratory, USEPA. EPA-600/3-81-013, Corvallis.
Petts, G. (1984) Impounded Rivers: Perspectives for
Ecological Management. Wiley, Chichester.
Petts, G., Heathcote, J. and Martin, D. (2002) Urban
Rivers: Our Inheritance and Future . IWA Publishing,
London.
Pfadenhauer, J. and Klötzli, F. (1996) Restoration experi-
ments in middle European wet terrestrial ecosystems:
an overview. Vegetatio 126 , 101-15.
Pfadenhauer, J. and Grootjans, A.P. (1999) Wetland
restoration in Central Europe: aims and methods.
Applied Vegetation Science 2 , 95 -106.
Pfadenhauer, J., Höper, H., Borkowski, B. et al. (2001)
Entwicklung planzenartreichen Niedermoorgrünlands.
In: Ökosystemmanagement für Niedermoore: Strategien
und Verfahren zur Renaturierung (eds. R. Kratz and
J. Pfadenhauer), pp. 134 -55. Ulmer, Stuttgart.
Phillips, G.L., Jackson, R., Bennet, C. and Chilvers, A. (1994)
The importance of sediment phosphorus release in the
restoration of very shallow lakes (the Norfolk Broads,
England) and implications for biomanipulation.
Hydrobiologia 275/276 , 445 -56.
Pickett, S.T.A. and Parker, V.T. (1994) Avoiding the old
pitfalls: opportunities in a new discipline. Restoration
Ecology 2 , 75 -9.
Pickett, S.T.A., Kolasa, J., Armesto, J.J. and Collins, S.L.
(1989) The ecological concept of disturbance and its
expression at various hierarchical levels. Oikos 54 ,
129 -36.
Pielou, E.C. (1979) Biogeography . Wiley, New York.
Piersma, T. and Koolhaas, A. (1997) Shorebirds ,
Shellfish(eries) and Sediments around Griend , Western
Wadden Sea , 1988-1996. Single Large-scale Exploita-
tive Events Lead to Long-term Changes of the Intertidal
Birds-benthos Community . NIOZ-report 1997-7, Texel.
Piersma, T., Koolhaas, A., Dekinga, A., Beukema, J.J.,
Dekker, R. and Essink, K. (2001) Long-term indirect
effects of mechanical cockle-dredging on intertidal
bivalve stocks in the Wadden Sea. Journal of Applied
Ecology 38 , 976 -90.

Pietsch, W. (1998) Sukzession der Vegetation im NSG 'Insel
im Senftenberger See' (1970 -1996). Berichte Institut
für Landschafts- und Pflanzenökologie Universität
Hohenheim , Beiheft 5 , 59 - 68.
Pimm, S.L. and Lawton, J.H. (1978) On feeding on more
than one level. Nature 275 , 542- 4.
Pimm, S.L., Lawton, J.H. and Cohen, J.E. (1991) Food web
patterns and their consequences. Nature 350 , 669 -74.
Pinkham, R. (2000) Daylighting: New Life for Buried
Streams . Rocky Mountain Institute, Old Snowmass, CO.
Polis, G.A. and Strong, D.R. (1996) Food web complex-
ity and community dynamics. American Naturalist
147 , 813 - 46.
Polis, G.A., Anderson, W.B. and Holt, R.D. (1997) Toward
an integration of landscape and food web ecology: the
dynamics of spatially subsidized food webs. Annual
Review of Ecology and Systematics 28 , 289 -316.
Polis, G.A., Sears, A.L.W., Huxel, G.R., Strong, D.R. and
Maron, J. (2000) When is a trophic cascade a trophic
cascade? Trends in Ecology and Evolution 15 , 473 -5.
Pomarol, M. (1994) Releasing Montagu's harrier ( Circus
pygargus ) by the method of hacking. Journal of
Raptor Research 28 , 19 -22.
Poschlod, P. (1990) Vegetationsentwicklung in abge-
torften Hochmooren des bayerischen Alpenvorlandes
unter besonderer Berücksichtigung standortskundlicher
und populationsbiologischer Faktoren . Dissertationes
Botanicae 152. Cramer, Berlin.
Poschlod, P. and Bonn, S. (1998) Changing dispersal pro-
cesses in the central European landscape since the last
ice age: an explanation for the actual decrease of plant
species richness in different habitats? Acta Botanica
Neerlandica 47 , 27- 44.
Poschlod, P. and WallisDeVries, M.F. (2002) The his-
torical and socioeconomic perspective of calcareous
grasslands: lessons from the distant and recent past.
Biological Conservation 104 , 361-76.
Poschlod, P., Bakker, J.P., Bonn, S. and Fischer, S.
(1996) Dispersal of plants in fragmented landscapes.
In: Species Survival in Fragmented Landscapes (eds.
J. Settele, C.R. Margules, P. Poschlod and K. Henle),
pp. 123 -7. Kluwer Academic Publishers, Dordrecht.
Poschlod, P., Kiefer, S., Tränkle, U., Fischer, S. and Bonn,
S. (1998) Plant species richness in calcareous grasslands
as affected by dispersability in space and time. Applied
Vegetation Science 1 , 75 -90.
Postel, S. and Richter, B. (2003) Rivers for Life: Man-
aging Water for People and Nature . Island Press,
Washington, DC.