Náttúrufræðingurinn - 1994, Síða 70

Boström U., A. Lofs-Holmin & J. Lagerlöf
1983. Role of earthworms in carbon and ni-
trogen cycling. I Ecology of arable land. The
role of organisms in nitrogen cycling (ritstj.
T. Rosswall). Progress report 1982. Swedish
University of Agricultural Sciences, Upp-
sala. Bls. 150-189.
Cuendet, G. 1983. Predation on earthworms by
the Black-headed Gull (Larus ridibundus). 1
Earthworm ecology. From Darwin to wermi-
culture (ritstj. J. E. Satchell). Chapman and
Hall, London. BIs. 415-424.
Curry, J. P. 1988. The ecology of earthworms
in reclaimed soils and their influence on soil
fertility. I Earthworms in waste and environ-
mental management (ritstj. C.A. Edwards &
F. Neuhauser), SPB Academic Publishing,
The Hague. Bls. 251-261.
Darwin, C.R. 1881. The formation of vegetable
mould through the action of worms, with ob-
servations on their habits. John Murray,
London. 328 bls.
Helgi Hallgrímsson 1969. Lífið í jarðveginum.
Arsrit Rœktunarfélags Norðurlands 66. 31-
68.
Hoogerkamp, M., H. Rogaar, & H.J.P. Eijs-
ackers 1983. Effect of earthworms on grass-
land on recently reclaimed polder soils in thc
Netherlands. I Earthworm ecology. From
Darwin to vermiculture (ritstj. J.E. Satchell).
Chapman and Hall, London. Bls. 85-105.
Hólmfríður Sigurðardóttir og Guðni Þorvalds-
son 1994. Anamaðkar í sunnlenskum túnum.
Búvísindi (í prentun).
Kladviko, E.J. & H.J. Timmenga 1990. Earth-
worms and agricultural management. I
Rhizosphere Dynamics (ritstj. J.E. Box &
L.C. Hammond). Bls. 192-216.
Lavelle, P. 1983. The structure of earthwonn
community. I Earthworm ecology. From
Darwin to vermiculture (ritstj. J.E. Satchell).
Chapman and Hall, London. Bls. 151-160.
Lavelle, P. 1988. Earthworm activities and the
soil system. Biology and Fertility of Soils 6.
237-251.
Lee, K.E. 1985. Earthworms. Their ecology
and relationships with soils and land use.
Academic Press. Sydney. 411 bls.
Macdonald, D.W. 1983. Predation on earth-
worms by terrestrial vertebrates. I Earth-
worm ecology. From Darwin to wermicult-
ure (ritstj. J. E. Satchell). Chapman and
Hall, London. Bls. 393-414.
Martin, A. & J.C.Y. Marinissen 1993. Biologi-
cal and physico-chemical processes in ex-
crement of soil animals. Geoderma 56. 331-
347.
Mather, J.C. & O. Christensen 1992. Surface
migration of earthworms in grassland. Pedo-
biologia 36. 51-57.
Oglesby, L.C. 1978. Salt and water balance. í
Physiology of Annelids (ritstj. P.J. Mill).
Academic press, London. Bls. 555-658.
Potter, D.A., M.C. Buxton, C.T. Redmond,
C.G. Patterson & A.J. Powell 1990. Toxicity
of pesticides to earthworms (Oligochaeta:
Lumbricidae) and effect on thatch degrada-
tion in Kentucky bluegrass turf. Journal of
Economic Entomology 83. 2362-2369.
Satchell, J.E. 1983. Earthworm microbiology.
í Earthworm ecology. From Darwin to
wermiculture (ritstj. J. E. Satchell). Chap-
man and Hall, London. Bls. 351-364.
Simek, R. 1993. Hugtök og heiti í norrænni
goðafræði. Heimskringla, Reykjavík. 333
bls.
Sims, R.W. & B.M. Gerard 1985. Earthworms.
Synopsis of the British fauna (New Series)
No 31. 171 bls.
Springett, J.A. 1992. Effect of introducing
earthworms into horticultural land previ-
ously denuded of earthworms. Soil Biology
& Biochemistiy 24, 12. 1615-1622.
Stochdill, S.M.J. 1982. Effects of introduced
earthworms on the productivity of New-
Zealand pastures. Pedobiologia 24. 29-35.
PÓSTFANG HÖFUNDAR
Hólmfríður Sigurðardóttir
Rannsóknastofnun landbúnaðarins
Keldnaholti
112 REYKJAVÍK
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