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1

Habitat use of arctic charrSalvelinus alpinusin Thingvallavatn, Iceland

Odd Ter Sandlund, Bror Jonsson, Hilmar J. Malmquist, Rolf Gydemo, Torfinn Lindem, Skúli Skúlason, Sigurdur S. Snorrason, Pétur M. Jónasson

Journal:

Environmental Biology of Fishes

Year:

1987

Language:

english

File:

PDF, 1.07 MB

english, 1987

2

Trophic specialization in Arctic charr Salvelinus alpinus (Pisces; Salmonidae): morphological divergence and ontogenetic niche shifts

Sigurdur S. Snorrason, Skúli Skúlason, Bror Jonsson, Hilmar J. Malmquist, Pétur M. Jónasson, Odd Terje Sandlund, Torfinn Lindem

Journal:

Biological Journal of the Linnean Society

Year:

1994

File:

PDF, 986 KB

1994

3

Ecology of Oligotrophic, Subarctic Thingvallavatn || The Arctic Charr Salvelinus alpinus in Thingvallavatn

Odd Terje Sandlund, Karl Gunnarsson, Pétur M. Jónasson, Bror Jonsson, Torfinn Lindem, Kristinn P. Magnússon, Hilmar J. Malmquist, Hrefna Sigurjónsdóttir, Skúli Skúlason and Sigurdur S. Snorrason

Journal:

Year:

1992

Language:

english

File:

PDF, 9.66 MB

english, 1992

4

Continental Rifting and Habitat Formation: Arena for Resource Polymorphism in Arctic Charr

Pétur M. Jónasson, Bror Jonsson and Odd Terje Sandlund

Journal:

AMBIO: A Journal of the Human Environment

Year:

1998

Language:

english

File:

PDF, 3.29 MB

english, 1998

5

Ecology of Oligotrophic, Subarctic Thingvallavatn || Population Dynamics of the Planktivorous Arctic Charr Salvelinus alpinus ("murta") in Thingvallavatn

Sigurdur S. Snorrason, Pétur M. Jónasson, Bror Jonsson, Torfinn Lindem, Hilmar J. Malmquist, Odd Terje Sandlund and Skúli Skúlason

Journal:

Year:

1992

Language:

english

File:

PDF, 1.81 MB

english, 1992

6

Ecology of Oligotrophic, Subarctic Thingvallavatn || Threespine Stickleback Gasterosteus aculeatus in Thingvallavatn: Habitat and Food in a Lake Dominated by Arctic Charr Salvelinus alpinus

Odd Terje Sandlund, Pétur M. Jónasson, Bror Jonsson, Hilmar J. Malmquist, Skúli Skúlason and Sigurdur S. Snorrason

Journal:

Year:

1992

Language:

english

File:

PDF, 1018 KB

english, 1992

7

Modifications in life history characteristics of planktivorous arctic charr ( Salvelinus alpinus ) in Thingvallavatn, Iceland

Snorrason, Sigurður S., Malmquist, Hilmar J., Jonsson, Bror, Jónasson, Pétur M., Sandlund, Odd Terje, Skúlason, Skúli

Journal:

SIL Proceedings, 1922-2010

Year:

1994

Language:

english

File:

PDF, 568 KB

english, 1994

8

Colon cancer in Iceland—A nationwide comparative study on various pathology parameters with respect to right and left tumor location and patients age

Petur Snaebjornsson, Larus Jonasson, Thorvaldur Jonsson, Pall Helgi Möller, Asgeir Theodors, Jon G. Jonasson

Journal:

International Journal of Cancer

Year:

2010

Language:

english

File:

PDF, 174 KB

english, 2010

9

Primary and Secondary Production in Lake Esrom. Growth of Chironomus anthracinus in Relation to Seasonal Cycles of Phytoplankton and Dissolved Oxygen

Pétur M. Jónasson, Jørgen Kristiansen

Journal:

International Review of Hydrobiology

Year:

1967

Language:

english

File:

PDF, 2.82 MB

english, 1967

10

Density, length distribution, and diet of age-0 arctic charrSalvelinus alpinusin the surf zone of Thingvallavatn, Iceland

Odd Terje Sandlund, Hilmar J. Malmquist, Bror Jonsson, Skúli Skúlason, Sigurdur S. Snorrason, Pétur M. Jónasson, Rolf Gydemo, Torfinn Lindem

Journal:

Environmental Biology of Fishes

Year:

1988

Language:

english

File:

PDF, 1.11 MB

english, 1988

11

Oxygen demand and long term changes of profundal zoobenthos

Petur M. Jónasson

Journal:

Year:

1984

Language:

english

File:

PDF, 373 KB

english, 1984

12

Oxygen consumption of profundal lake animals at low oxygen content of the water

Kaj Berg, Pétur M. Jónasson

Journal:

Year:

1965

Language:

english

File:

PDF, 683 KB

english, 1965

13

The respiration of some animals from the Profundal Zone of a lake

Kaj Bérg, Pétur M. Jónasson, K. W. Ockelmann

Journal:

Year:

1962

Language:

english

File:

PDF, 1.71 MB

english, 1962

14

Trophic specialization in Arctic charr Salvelinus alpinus (Pisces; Salmonidae): morphological divergence and ontogenetic niche shifts

SIGURDUR S. SNORRASON, SKÚLI SKÚLASON, BROR JONSSON, HILMAR J. MALMQUIST, PÉTUR M. JÓNASSON, ODD TERJE SANDLUND, TORFINN LINDEM

Journal:

Biological Journal of the Linnean Society

Year:

1994

Language:

english

File:

PDF, 1.31 MB

english, 1994

15

Long-Term Population Dynamics and Production of Pisidium (Bivalvia) in the Profundal of Lake Esrom, Denmark

Ismo J. Holopainen and Pétur M. Jónasson

Journal:

Year:

1983

Language:

english

File:

PDF, 2.08 MB

english, 1983

16

Geographical Sovereignty in Times of Crisis: The Eyjafjallajökull Eruption and the International Community from a Project Management Perspective

Heiðarson, Einar Pétur, Jónasson, Haukur Ingi, Ingason, Helgi Thor

Journal:

Procedia - Social and Behavioral Sciences

Year:

2014

Language:

english

File:

PDF, 285 KB

english, 2014

17

[untitled]

Review by: Petur M. Jonasson

Journal:

Limnology and Oceanography

Year:

1995

Language:

english

File:

PDF, 731 KB

english, 1995

18

Colon cancer: association of histopathological parameters and patients' survival with clinical presentation

Alexiusdottir, Kristin K., Snaebjornsson, Petur, Tryggvadottir, Laufey, Jonasson, Larus, Olafsdottir, Elinborg J., Björnsson, Einar Stefan, Möller, Pall Helgi, Jonasson, Jon G.

Journal:

Year:

2013

Language:

english

File:

PDF, 89 KB

english, 2013

19

The Ecosystem of Thingvallavatn: A Synthesis

Jónasson, Pétur M., Jonasson, Petur M.

Journal:

Year:

1992

Language:

english

File:

PDF, 9.51 MB

english, 1992

20

Physical Characteristics of Thingvallavatn, Iceland

Adalsteinsson, Hákon, Jónasson, Pétur M., Rist, Sigurjón, Adalsteinsson, Hakon, Jonasson, Petur M., Rist, Sigurjon

Journal:

Year:

1992

Language:

english

File:

PDF, 1.21 MB

english, 1992

21

Association of symptoms of colon cancer patients with tumor location and TNM tumor stage

Alexiusdottir, Kristin K., Möller, Pall Helgi, Snaebjornsson, Petur, Jonasson, Larus, Olafsdottir, Elinborg J., Björnsson, Einar Stefan, Tryggvadottir, Laufey, Jonasson, Jon G.

Journal:

Scandinavian Journal of Gastroenterology

Year:

2012

Language:

english

File:

PDF, 111 KB

english, 2012

22

Ecology of Eutrophic, Subarctic Lake Mývatn and the River Laxá || The Lake Mývatn Ecosystem, Iceland

Pétur M. Jónasson

Journal:

Year:

1979

Language:

english

File:

PDF, 1.13 MB

english, 1979

23

Ecology of Eutrophic, Subarctic Lake Mývatn and the River Laxá || Introduction

Pétur M. Jónasson

Journal:

Year:

1979

Language:

english

File:

PDF, 5.90 MB

english, 1979

24

The Growth of Plumatella repens and P. fungosa (Bryozoa Ectoprocta) in Relation to External Factors in Danish Eutrophic Lakes

Pétur M. Jónasson

Journal:

Year:

1963

Language:

english

File:

PDF, 2.08 MB

english, 1963

25

Ecology of Oligotrophic, Subarctic Thingvallavatn || Metabolism and Community Dynamics within Nitella opaca (Charophyceae) Beds in Thingvallavatn

Timo Kairesalo, Gunnar St. Jónsson, Karl Gunnarsson, Claus Lindegaard and Pétur M. Jónasson

Journal:

Year:

1992

Language:

english

File:

PDF, 2.67 MB

english, 1992

26

Ecology of Eutrophic, Subarctic Lake Mývatn and the River Laxá || Abundance, Population Dynamics and Production of Zoobenthos in Lake Mývatn, Iceland

Claus Lindegaard and Pétur M. Jónasson

Journal:

Year:

1979

Language:

english

File:

PDF, 4.22 MB

english, 1979

27

Bathymetric Distribution and Abundance of Pisidium (Bivalvia: Sphaeriidae) in Lake Esrom, Denmark, from 1954 to 1988

Ismo J. Holopainen and Pétur M. Jónasson

Journal:

Year:

1989

File:

PDF, 1.76 MB

1989

28

Life Cycle of Potamothrix Hammoniensis (Tubificidae) in the Profundal of a Eutrophic Lake

Pétur M. Jónasson and Frode Thorhauge

Journal:

Year:

1972

File:

PDF, 922 KB

1972

29

The Efficiency of Sieving Techniques for Sampling Freshwater Bottom Fauna

Pétur M. Jónasson

Journal:

Year:

1955

Language:

english

File:

PDF, 1.93 MB

english, 1955

30

Life Cycle of Potamothrix Hammoniensis (Tubificidae) in the Profundal of a Eutrophic Lake

Pétur M. Jónasson and Frode Thorhauge

Journal:

Year:

1972

Language:

english

File:

PDF, 922 KB

english, 1972

31

Bathymetric Distribution and Abundance of Pisidium (Bivalvia: Sphaeriidae) in Lake Esrom, Denmark, from 1954 to 1988

Ismo J. Holopainen and Pétur M. Jónasson

Journal:

Year:

1989

Language:

english

File:

PDF, 1.76 MB

english, 1989

32

Ecology of Oligotrophic, Subarctic Thingvallavatn || Thingvallavatn Research History

Pétur M. Jónasson

Journal:

Year:

1992

Language:

english

File:

PDF, 11.04 MB

english, 1992

33

Measurements of Primary Production in Two Danish Eutrophic Lakes, Esrom sø and Furesø

Pétur M. Jónasson and Hans Mathiesen

Journal:

Year:

1959

Language:

english

File:

PDF, 2.81 MB

english, 1959

34

An Improved Funnel Trap for Capturing Emerging Aquatic Insects, with Some Preliminary Results

Pétur M. Jónasson

Journal:

Year:

1954

Language:

english

File:

PDF, 1.27 MB

english, 1954

35

Ecology of Oligotrophic, Subarctic Thingvallavatn || Exploitation and Conservation of the Thingvallavatn Catchment Area

Pétur M. Jónasson

Journal:

Year:

1992

Language:

english

File:

PDF, 1.99 MB

english, 1992

36

Ecology of Eutrophic, Subarctic Lake Mývatn and the River Laxá || The River Laxá Ecosystem, Iceland

Pétur M. Jónasson

Journal:

Year:

1979

Language:

english

File:

PDF, 530 KB

english, 1979

37

Ecology of Oligotrophic, Subarctic Thingvallavatn || Production and Nutrient Supply of Phytoplankton in Subarctic, Dimictic Thingvallavatn, Iceland

Pétur M. Jónasson, Hákon Adalsteinsson and Gunnar St. Jónsson

Journal:

Year:

1992

Language:

english

File:

PDF, 3.44 MB

english, 1992

38

Ecology of Oligotrophic, Subarctic Thingvallavatn || Iceland: An Island Astride the Mid-Atlantic Ridge

Pétur M. Jónasson

Journal:

Year:

1992

Language:

english

File:

PDF, 1.51 MB

english, 1992

39

Ecology of Eutrophic, Subarctic Lake Mývatn and the River Laxá || Phytoplankton Production in Shallow Eutrophic Lake Mývatn, Iceland

Pétur M. Jónasson and Hákon Adalsteinsson

Journal:

Year:

1979

Language:

english

File:

PDF, 1.83 MB

english, 1979

40

Why is colon cancer survival improving by time? A nationwide survival analysis spanning 35 years

Snaebjornsson, Petur, Jonasson, Larus, Olafsdottir, Elinborg J., van Grieken, Nicole C. T., Moller, Pall H., Theodors, Asgeir, Jonsson, Torvaldur, Meijer, Gerrit A., Jonasson, Jon G.

Journal:

International Journal of Cancer

Year:

2017

Language:

english

File:

PDF, 680 KB

english, 2017

41

The risk of developing a mismatch repair deficient colorectal cancer after undergoing cholecystectomy

Halldorsson, Matthias Orn, Hauptmann, Michael, Snaebjornsson, Petur, Haraldsdóttir, Kristín Huld, Aspelund, Thor, Gudmundsson, Elias Freyr, Gudnason, Vilmundur, Jonasson, Jon Gunnlaugur, Haraldsdottir

Journal:

Scandinavian Journal of Gastroenterology

Year:

2018

Language:

english

File:

PDF, 752 KB

english, 2018

42

Limits for life in the lake ecosystem

Jónasson, Pétur M.

Journal:

SIL Proceedings, 1922-2010

Year:

1996

Language:

english

File:

PDF, 5.37 MB

english, 1996

43

The mesh factor in sieving techniques

Jónasson, Pétur M.

Journal:

SIL Proceedings, 1922-2010

Year:

1958

Language:

english

File:

PDF, 541 KB

english, 1958

44

Population dynamics in Chironomus anthracinus Zett. in the profundal zone of Lake Esrom

Jónasson, Pétur M.

Journal:

SIL Proceedings, 1922-2010

Year:

1961

Language:

english

File:

PDF, 682 KB

english, 1961

45

Population ecology and production of benthic detritivores

Jónasson, Pétur M.

Journal:

SIL Proceedings, 1922-2010

Year:

1975

Language:

english

File:

PDF, 552 KB

english, 1975

46

Factors determining population size of Chironomus anthracinus in Lake Esrom

Jónasson, Pétur M.

Journal:

SIL Communications, 1953-1996

Year:

1965

Language:

english

File:

PDF, 1.33 MB

english, 1965

47

Energy flow in a subarctic, eutrophic lake

Jónasson, Pétur M.

Journal:

SIL Proceedings, 1922-2010

Year:

1981

Language:

english

File:

PDF, 476 KB

english, 1981

48

The relationship between primary production and production of profundal bottom invertebrates in a Danish eutrophic lake

Jónasson, Pétur M.

Journal:

SIL Proceedings, 1922-2010

Year:

1964

Language:

english

File:

PDF, 653 KB

english, 1964

49

Life cycles of Chironomus hyperboreus Staeger and Tanytarsus gracilentus (Holmgren) (Chironomidae, Diptera) in Lake Mývatn, Northern Iceland

Lindegaard, Claus, Jónasson, Pétur M.

Journal:

SIL Proceedings, 1922-2010

Year:

1975

Language:

english

File:

PDF, 636 KB

english, 1975

50

Zoobenthos of lakes

Jónasson, Pétur M.

Journal:

SIL Proceedings, 1922-2010

Year:

1978

Language:

english

File:

PDF, 3.30 MB

english, 1978

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