Náttúrufræðingurinn - 2010, Blaðsíða 66

Náttúrufræðingurinn
146
Mehrhoff, L.J., Silander Jr., J.A., Leicht, S.A., Mosher, E.S. & Tabak, 18.
N.M. 2003. IPANE: Invasive Plant Atlas of New England. Catalog of
Species Search: Brazilian water-weed. Department of Ecology &
Evolutionary Biology, University of Connecticut, Storrs, CT, USA.
http://nbii-nin.ciesin.columbia.edu/ipane/icat/browse.do?specieId=
17#threats (skoðað 05.09. 2010).
European and Mediterranean Plant Protection Organization 2007. EPPO 19.
Plant Quarantine Information Retrieval System. Version 4.6 (2007-07).
EPPO, Paris, France. www.eppo.org.
Bäckström, L.-Å. 2009. Biodiversity occurrence data provided by GBIF-20.
SE:ArtDatabanken. (GBIF Data Portal, www.gbif.net). Fengið frá GBIF
Data Portal. Global Biodiversity Information Facility. http://data.gbif.
org/occurrences/1872725/ (skoðað 22.12. 2009).
Pierini, S.A. & Thomaz, S.M. 2004. Effects of inorganic carbon source on 21.
photosynthetic rates of Egeria najas Planchon and Egeria densa Planchon
(Hydrocharitaceae). Aquatic Botany 78. 135–146.
European and Mediterranean Plant Protection Organization 2010. EPPO 22.
List of invasive alien plants. http://www.eppo.org/QUARANTINE/
ias_plants.htm (skoðað 04.02. 2010).
Hill, M.O., Wright, S.M., Dring, J.C., Firbank, L.G.S., Manchester, J. & 23.
Croft, J.M. 2006. The potential for spread of alien species in England
following climate change. English Nature. RO90. 99 bls.
Hussner, A. & Lösch, R. 2005. Alien aquatic plants in a thermally 24.
abnormal river and their assembly to neophyte-dominated macrophyte
stands (River Erft, Northrhine-Westphalia). Limnologica – Ecology and
Management of Inland Waters 35. 18–30.
Kadono, Y. 2004. Alien aquatic plants naturalized in Japan: History and 25.
present status. Global Environmental Research 8. 163–169.
Mesterházy, A., Király, G., Vidéki, R., Steték, D. & Csiky, J. 2009. 26.
Actual report on spread of invasive macrophytes in Hungary. Bls.
133–134 í: Aquatic Weeds 2009. Proceedings of the 12th European
Weed Research Society Symposium August 24–28 2009, Jyväskylä,
Finland. Reports of Finnish Environment Institute 15 (ritstj. Pieterse,
A., Rytkönen, A.-M. & Seppo, H.).
Washington State Department of Ecology 2006. Technical Information 27.
about Egeria densa (Brazilian Elodea). http://www.ecy.wa.gov/pro-
grams/wq/plants/weeds/aqua002.html (skoðað 15.09. 2009).
Barreto, R., Charudattan, R., Pomella, A. & Hanada, R. 2000. Biological 28.
control of neotropical aquatic weeds with fungi. Crop Protection 19.
697–703.
Haramoto, T. & Ikusima, I. 1988. Life cycle of 29. Egeria densa Planch, an
aquatic plant naturalized in Japan. Aquatic Botany 30. 389–403.
Greulich, S. & Bornette, G. 2003. Being evergreen in an aquatic habitat 30.
with attenuated seasonal contrasts – a major competitive advantage?
Plant Ecology 167. 9–18.
Tryggvi Þórðarson 1983. Økologien til ferskvannssneglene 31. Lymnaea
peregra (Müller) og Gyraulus laevis (Alder) i to eutrofe varme kilder på
Island. Verkefni til cand.real.-gráðu. Universitetet i Oslo. 198 bls.
Mandahl-Barth, G. 1949. Bløddyr III. Ferskvandsbløddyr. Danmarks 32.
fauna 54. 3–175.
NOBANIS 2005. 33. Physella acuta (Physidae) in Iceland. The North Euro-
pean and Baltic Network on Invasive Alien Species. http://www.
nobanis.org/NationalInfo.asp?countryID=IS&taxaID=1604 (skoðað
12.06. 2010).
Mellanby, H. 1963. Animal Life in Fresh Water. 6. útg. Chapman & Hall. 34.
London. 308 bls.
Kasselmann, C. 2003. Aquarium Plants. Krieger Publishing Company. 35.
Malabar, Florida, USA. 518 bls.
Getsinger, K.D. & Dillon, C.R. 1984. Quiescence, growth and senescence 36.
of Egeria densa in Lake Marion. Aquatic Botany 20. 329–338.
Bowmer, K.H., Jacobs, S.W.L. & Sainty, G.R. 1995. Identification, biology 37.
and management of Elodea canadensis, Hydrocharitaceae. Journal of
Aquatic Plant Management 33. 13–19.
Mony, C., Koschnick, T.J., Haller, W.T. & Muller, S. 2007. Competition 38.
between two invasive Hydrocharitaceae (Hydrilla verticillata (L.f.)
(Royle) and Egeria densa (Planch)) as influenced by sediment fertility
and season. Aquatic Botany 86. 236–242.
Barko, J.W. & Smart, R.M. 1981. Comparative influences of light and 39.
temperature on the growth and metabolism of selected submersed fresh-
water macrophytes. Ecological Monographs 51. 219–235.
Pennington, T. 2009. Chapter 13.8: 40. Egeria. Bls. 129–134 í: Biology and
Control of Aquatic Plants. A Best Management Practices Handbook
(ritstj. Gettys, L.A., Haller, W.T. & Bellaud, M.). Marietta, Georgia, USA,
Aquatic Ecosystem Restoration Foundation.
Áskell Löve 1945. Íslenskar jurtir. Ejnar Munksgaard. Kaupmannahöfn. 41.
291 bls.
Bini, L.M. & Thomaz, S.M. 2005. Prediction of 42. Egeria najas and Egeria
densa occurrence in a large subtropical reservoir (Itaipu Reservoir, Brazil-
Paraguay). Aquatic Botany 83. 227–238.
Dutartre, A., Haury, J. & Jigorel, A. 1999. Succession of 43. Egeria densa in a
drinking water reservoir in Morbihan (France). Hydrobiologia 415.
243–247.
Lara, M.V., Casati, P. & Andreo, C.S. 2002. CO44. 2-concentrating mecha-
nisms in Egeria densa, a submersed aquatic plant. Physiologia Plantarum
115. 487–495.
Rascio, N., Mariani, P., Tommasini, E., Bodner, B. & Larcher, W. 1991. 45.
Photosynthetic strategies in leaves and stems of Egeria densa. Planta
185. 297–303.
Casati, P., Lara, M.V. & Andreo, C.S. 2000. Induction of a C46. 4-like mecha-
nism of CO2 fixation in Egeria densa, a submersed aquatic species. Plant
Physiol. 123. 1611–1622.
Osborne, C.P. & Beerling, D.J. 2006. Nature’s green revolution: the 47.
remarkable evolutionary rise of C4 plants. Philosophical Transactions of
the Royal Society B: Biological Sciences 361. 173–194.
Ehleringer, J. & Björkman, O. 1977. Quantum Yields for CO48. 2 Uptake in
C3 and C4 Plants Dependence on Temperature, CO2 and O2 Concentra-
tion. Plant Physiology 59. 86–90.
Preston, C.D. 1995. Pondweeds of Great Britain and Ireland – B.S.B.I. 49.
Handbook No. 8. Botanical Society of the British Isles. Peterborough.
352 bls.
Kautsky, L. 1988. Life Strategies of Aquatic Soft Bottom Macrophytes. 50.
Oikos 53. 126–135.
Anderson, R. 1969. Temperature and rooted aquatic plants. Chesapeake 51.
Science 10. 157–164.
Pilon, J. & Santamaría, L. 2001. Seasonal acclimation in the photosyn-52.
thetic and respiratory temperature responses of three submerged fresh-
water macrophyte species. New Phytologist 151. 659–670.
Hanna, E., Jonsson, T. & Box, J.E. 2004. An analysis of Icelandic climate 53.
since the nineteenth century. International Journal of Climatology 24.
1193–1210.
Mohseni, O. & Stefan, H.G. 1999. Stream temperature/air tempera-54.
ture relationship: a physical interpretation. Journal of Hydrology 218.
128–141.
Pilgrim, J.M., Fang, X. & Stefan, H.G. 1998. Stream temperature correla-55.
tions with air temperatures in Minnesota: Implications for climate
warming. Journal of the American water resources association 34.
1109–1121.
Morrill, J.C., Bales, R.C. & Conklin, M.H. 2005. Estimating Stream 56.
Temperature from Air Temperature: Implications for Future Water
Quality. Journal of Environmental Engineering 131. 139–146.
Flora of North America Association 2008. The Flora of North America. 57.
Vol. 22: Hydrilla verticillata (Linnaeus f.) Royle. http://www.efloras.org/
florataxon.aspx?flora_id=1&taxon_id=220004601 (skoðað 30.08. 2010).
Nichols, S. & Shaw, B. 1986. Ecological life histories of the three aquatic 58.
nuisance plants, Myriophyllum spicatum, Potamogeton crispus and Elodea
canadensis. Hydrobiologia 131. 3–21.
European and Mediterranean Plant Protection Organization 2007. Data 59.
sheets on quarantine pests, Crassula helmsii. OEPP/EPPO Bulletin 37.
225–229. (http://www.eppo.org/QUARANTINE/plants/Crassula_
helmsii/Crassula_helmsii_DS.pdf).
The Global Invasive Species Database 2010. Invasive Species Specialist 60.
Group (ISSG) of the IUCN Species Survival Commission. http://www.
issg.org/database (skoðað 15.06.2010).
Simpson, D.A. 1984. A short history of the introduction and spread of 61.
Elodea Michx in the British Isles. Watsonia 15. 1–9.
NOBANIS 2010. The North European and Baltic Network on Invasive 62.
Alien Species. A gateway to information on alien and invasive species in
North and Central Europe. http://www.nobanis.org/Search.asp
(skoðað 14.06. 2010).
Hussner, A., Van de Weyer, K., Gross, E.M. & Hilt, S. 2010. Comments on 63.
increasing number and abundance of non-indigenous aquatic macro-
phyte species in Germany. Í: Weed Research (ritstj. Marshall, E.J.P.).
Blackwell Publishing Ltd. (http://dx.doi.org/10.1111/j.1365-3180.2010.
00812.x).
Capers, R.S., Bugbee, G.J., Selsky, R. & White, J.C. 2005. Invasive Aquatic 64.
Plants of Connecticut. Bulletin No. 997. The Connecticut Agricultural
Experiment Station. New Haven. 28 bls.
Um höfundinn
Tryggvi Þórðarson (f. 1952) lauk cand. mag.-prófi í raun-
vísindum frá Háskólanum í Osló 1978 og cand. real.-
prófi í vatnavistfræði frá sama skóla 1983. Hann hefur
starfað hjá Heilbrigðiseftirliti Reykjavíkur og Rann-
sókna- og fræðasetri Háskóla Íslands í Hveragerði.
Póst- og netfang höfundar/Author’s address
Tryggvi Þórðarson
Melgerði 6
IS-200 Kópavogur
trygg@hive.is
80 3-4#Loka_061210.indd 146 12/6/10 7:22:35 AM