Samuli O. Helama: search on Z-Library

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51

Constructing long-term proxy series for aquatic environments with absolute dating control using a sclerochronological approach: introduction and advanced applications

Helama, Samuli, Schöne, Bernd R., Black, Bryan A., Dunca, Elena

Journal:

Marine and Freshwater Research

Year:

2006

Language:

english

File:

PDF, 358 KB

english, 2006

52

A Review of Citation Patterns in Doctoral Dissertations at the Department of Geology, University of Helsinki, Finland, since 1896

Journal:

Science & Technology Libraries

Year:

2012

Language:

english

File:

PDF, 225 KB

english, 2012

53

Shell growth history of geoduck clam (Panopea abrupta) in Parry Passage, British Columbia, Canada: Temporal variation in annuli and the Pacific Decadal Oscillation

Jan Kresten Nielsen, Samuli Helama, Bernd Schöne

Journal:

Journal of Oceanography

Year:

2008

Language:

english

File:

PDF, 826 KB

english, 2008

54

Evolutionary ecology of human birth sex ratio under the compound influence of climate change, famine, economic crises and wars

Samuli Helle, Samuli Helama, Kalle Lertola

Journal:

Journal of Animal Ecology

Year:

2009

Language:

english

File:

PDF, 252 KB

english, 2009

55

Reconciling pollen-stratigraphical and tree-ring evidence for high- and low-frequency temperature variability in the past millennium

Samuli Helama, Heikki Seppä, H. John B. Birks, Anne E. Bjune

Journal:

Quaternary Science Reviews

Year:

2010

Language:

english

File:

PDF, 1.45 MB

english, 2010

56

Hydroclimatic variations over the last millennium in eastern Finland disentangled by fossil Cladocera

Nevalainen, Liisa, Helama, Samuli, Luoto, Tomi P.

Journal:

Palaeogeography, Palaeoclimatology, Palaeoecology

Year:

2013

Language:

english

File:

PDF, 737 KB

english, 2013

57

Variation and seasonal patterns of suicide mortality in Finland and Sweden since the 1750s

Jari Holopainen, Samuli Helama…

Journal:

Environmental Health and Preventive Medicine

Year:

2013

Language:

english

File:

PDF, 399 KB

english, 2013

58

Oak decline in a southern Finnish forest as affected by a drought sequence

Sohar, Kristina, Helama, Samuli, Läänelaid, Alar, Raisio, Juha, Tuomenvirta, Heikki

Journal:

Geochronometria

Year:

2014

Language:

english

File:

PDF, 1.06 MB

english, 2014

59

Finnish supra-long tree-ring chronology extended to 5634 BC

Helama, Samuli, Mielikäinen, Kari, Timonen, Mauri, Eronen, Matti

Journal:

Norsk Geografisk Tidsskrift / Norwegian Journal of Geography

Year:

2008

Language:

english

File:

PDF, 275 KB

english, 2008

60

Food availability at birth limited reproductive success in historical humans

Rickard, Ian J., Holopainen, Jari, Helama, Samuli, Helle, Samuli, Russell, Andrew F., Lummaa, Virpi

Journal:

Year:

2010

Language:

english

File:

PDF, 171 KB

english, 2010

61

A chronology of climatic downturns through the mid- and late-Holocene: tracing the distant effects of explosive eruptions from palaeoclimatic and historical evidence in northern Europe

Helama, Samuli, Holopainen, Jari, Macias-Fauria, Marc, Timonen, Mauri, Mielikäinen, Kari

Journal:

Year:

2013

Language:

english

File:

PDF, 1.55 MB

english, 2013

62

CONTRASTING TREE-RING GROWTH RESPONSE OF PICEA ABIES TO CLIMATE VARIABILITY IN WESTERN AND EASTERN ESTONIA

HELAMA, SAMULI, LÄÄNELAID, ALAR, BIJAK, SZYMON, JAAGUS, JAAK

Journal:

Geografiska Annaler: Series A, Physical Geography

Year:

2016

Language:

english

File:

PDF, 1.13 MB

english, 2016

63

Construction of statistically reliable sclerochronology using subfossil shells of river pearl mussel

Samuli Helama, Jan Kresten Nielsen

Journal:

Journal of Paleolimnology

Year:

2008

Language:

english

File:

PDF, 509 KB

english, 2008

64

PALEOCLIMATOLOGICAL EVIDENCE FOR UNPRECEDENTED RECENT TEMPERATURE RISE AT THE EXTRATROPICAL PART OF THE NORTHERN HEMISPHERE

MAXIM G. OGURTSOV, HOGNE JUNGNER, SAMULI HELAMA, MARKUS LINDHOLM, MARKKU OINONEN

Journal:

Geografiska Annaler: Series A, Physical Geography

Year:

2011

Language:

english

File:

PDF, 729 KB

english, 2011

65

Dendroclimatology. Progress and Prospects. Malcolm K. Hughes, Thomas W. Swetnam, Henry F. Diaz (Eds.) Developments in Paleoenvironmental Research, Vol. 11. 1st Edition, 2011, XII, 365 p. Hardcover, ISBN 978-1-4020-4010-8.

Journal:

Archaeological and Anthropological Sciences

Year:

2012

Language:

english

File:

PDF, 83 KB

english, 2012

66

A 434-year tree-ring chronology of spruce (Picea abies) with indications of Estonian precipitation

Läänelaid, Alar, Helama, Samuli, Eckstein, Dieter

Journal:

Year:

2015

Language:

english

File:

PDF, 1.24 MB

english, 2015

67

Multiscale variation in drought controlled historical forest fire activity in the boreal forests of eastern Fennoscandia

Aakala, Tuomas, Pasanen, Leena, Helama, Samuli, Vakkari, Ville, Drobyshev, Igor, Seppä, Heikki, Kuuluvainen, Timo, Stivrins, Normunds, Wallenius, Tuomo, Vasander, Harri, Holmström, Lasse

Journal:

Ecological Monographs

Year:

2017

Language:

english

File:

PDF, 718 KB

english, 2017

68

Fusing pollen-stratigraphic and dendroclimatic proxy data to reconstruct summer temperature variability during the past 7.5

Samuli Helama, Heikki Seppä, Anne E. Bjune, H. John B. Birks

Journal:

Journal of Paleolimnology

Year:

2012

Language:

english

File:

PDF, 627 KB

english, 2012

69

Does diurnal temperature range influence seasonal suicide mortality? Assessment of daily data of the Helsinki metropolitan area from 1973 to 2010

Jari Holopainen, Samuli Helama, Timo Partonen

Journal:

International Journal of Biometeorology

Year:

2014

Language:

english

File:

PDF, 310 KB

english, 2014

70

Quantifying temporal changes in Tornionjoki river ice breakup dates and spring temperatures in Lapland since 1802

Helama, Samuli, Jiang, Jianmin, Korhonen, Johanna, Holopainen, Jari, Timonen, Mauri

Journal:

Journal of Geographical Sciences

Year:

2013

Language:

english

File:

PDF, 761 KB

english, 2013

71

Dendrochronological investigation of wood extractives

Samuli Helama, Matti Vartiainen, Taneli Kolström, Jouko Meriläinen

Journal:

Wood Science and Technology

Year:

2010

Language:

english

File:

PDF, 416 KB

english, 2010

72

Plant phenological records in northern Finland since the 18th century as retrieved from databases, archives and diaries for biometeorological research

Jari Holopainen, Samuli Helama…

Journal:

International Journal of Biometeorology

Year:

2013

Language:

english

File:

PDF, 501 KB

english, 2013

73

Significant changes of subseries-means in the Finnish tree-ring index of 7638 years, with comparisons to glaciological evidence from Greenland and Alps

Timonen, Mauri, Jiang, Jianmin, Helama, Samuli, Mielikäinen, Kari

Journal:

Quaternary International

Year:

2014

Language:

english

File:

PDF, 735 KB

english, 2014

74

Growth characteristics of the endangered thick-shelled river mussel (Unio crassus) near the northern limit of its natural range

Helama, Samuli, Valovirta, Ilmari, Nielsen, Jan Kresten

Journal:

Aquatic Conservation: Marine and Freshwater Ecosystems

Year:

2017

Language:

english

File:

PDF, 664 KB

english, 2017

75

Reconstruction of precipitation variability in Estonia since the eighteenth century, inferred from oak and spruce tree rings

Helama, Samuli, Sohar, Kristina, Läänelaid, Alar, Bijak, Szymon, Jaagus, Jaak

Journal:

Climate Dynamics

Year:

2017

Language:

english

File:

PDF, 3.71 MB

english, 2017

76

Arctic hydroclimate variability during the last 2000 years: current understanding and research challenges

Linderholm, Hans W., Nicolle, Marie, Francus, Pierre, Gajewski, Konrad, Helama, Samuli, Korhola, Atte, Solomina, Olga, Yu, Zicheng, Zhang, Peng, D&amp, apos, Andrea, William J., Debret, Maxime, Divine,

Journal:

Climate of the Past

Year:

2018

Language:

english

File:

PDF, 14.37 MB

english, 2018

77

Boreal and subarctic soils under climatic change

Samuli Helama, Heikki Tuomenvirta, Ari Venäläinen

Journal:

Global and Planetary Change

Year:

2011

Language:

english

File:

PDF, 1.60 MB

english, 2011

78

Stream flow intensity of the Saavanjoki River, eastern Finland, during the past 1500 years reflected by mayfly and caddisfly mandibles in adjacent lake sediments

Tomi P. Luoto, Samuli Helama, Liisa Nevalainen

Journal:

Journal of Hydrology

Year:

2013

Language:

english

File:

PDF, 596 KB

english, 2013

79

Subfossil peatland trees as proxies for Holocene palaeohydrology and palaeoclimate

Edvardsson, Johannes, Stoffel, Markus, Corona, Christophe, Bragazza, Luca, Leuschner, Hanns Hubert, Charman, Dan J., Helama, Samuli

Journal:

Earth-Science Reviews

Year:

2016

Language:

english

File:

PDF, 1.74 MB

english, 2016

80

Finnish National Phenological Network 1997â2017: from observations to trend detection

Helama, Samuli, Tolvanen, Anne, Karhu, Jouni, Poikolainen, Jarmo, Kubin, Eero

Journal:

International Journal of Biometeorology

Year:

2020

File:

PDF, 1.56 MB

2020

81

Mortality of urban pines in Helsinki explored using tree rings and climate records

Samuli Helama, Alar Läänelaid, Juha Raisio, Heikki Tuomenvirta

Journal:

Year:

2012

Language:

english

File:

PDF, 438 KB

english, 2012

82

Analysis of reconstructed annual precipitation from tree-rings for the past 500 years in the middle Qilian Mountain

Tian, QinHua, Zhou, XiuJi, Gou, XiaoHua, Zhao, Ping, Fan, ZeXin, Helama, Samuli

Journal:

SCIENCE CHINA Earth Sciences

Year:

2012

Language:

english

File:

PDF, 820 KB

english, 2012

83

Expressing Tree-Ring Chronology as Age-Standardized Growth Measurements

Journal:

Year:

2015

Language:

english

File:

PDF, 1.32 MB

english, 2015

84

Stone Age midden deposition assessed by bivalve sclerochronology and radiocarbon wiggle-matching of Arctica islandica shell increments

Samuli Helama, Bryan C. Hood

Journal:

Journal of Archaeological Science

Year:

2011

Language:

english

File:

PDF, 1.33 MB

english, 2011

85

A 7.5 ka chronology of stable carbon isotopes from tree rings with implications for their use in palaeo-cloud reconstruction

Helama, Samuli, Arppe, Laura, Timonen, Mauri, Mielikäinen, Kari, Oinonen, Markku

Journal:

Global and Planetary Change

Year:

2018

Language:

english

File:

PDF, 6.30 MB

english, 2018

86

A multiproxy reconstruction of spring temperatures in south-west Finland since 1750

Jari Holopainen, Samuli Helama, Juha M. Kajander, Johanna Korhonen, Jouko Launiainen, Heikki Nevanlinna, Anni Reissell, Veli-Pekka Salonen

Journal:

Climatic Change

Year:

2009

Language:

english

File:

PDF, 624 KB

english, 2009

87

Dendroclimatic signals deduced from riparian versus upland forest interior pines in North Karelia, Finland

Helama, Samuli, Arentoft, Birgitte W., Collin-Haubensak, Olivier, Hyslop, Michael D., Brandstrup, Charlotte K., Mäkelä, Hanna M., Tian, QinHua, Wilson, Rob

Journal:

Ecological Research

Year:

2013

Language:

english

File:

PDF, 583 KB

english, 2013

88

Extracting long-period climate fluctuations from tree-ring chronologies over timescales of centuries to millennia

Samuli Helama, Mauri Timonen, Markus Lindholm, Jouko MeriläInen, Matti Eronen

Journal:

International Journal of Climatology

Year:

2005

Language:

english

File:

PDF, 220 KB

english, 2005

89

Dendrochronologically dated changes in the limit of pine in northernmost Finland during the past 7.5 millennia

SAMULI HELAMA, MARKUS LINDHOLM, MAURI TIMONEN, MATTI ERONEN

Journal:

Year:

2004

Language:

english

File:

PDF, 256 KB

english, 2004

90

Regional climatic signals in Scots pine growth with insights into snow and soil associations

Helama, Samuli, Mielikäinen, Kari, Timonen, Mauri, Herva, Hannu, Tuomenvirta, Heikki, Venäläinen, Ari

Journal:

Year:

2013

Language:

english

File:

PDF, 721 KB

english, 2013

91

Age-related trends in subfossil tree-ring δ13C data

Helama, Samuli, Arppe, Laura, Timonen, Mauri, Mielikäinen, Kari, Oinonen, Markku

Journal:

Chemical Geology

Year:

2015

Language:

english

File:

PDF, 871 KB

english, 2015

92

X-ray microdensitometry applied to subfossil tree-rings: growth characteristics of ancient pines from the southern boreal forest zone in Finland at intra-annual to centennial time-scales

Samuli Helama, Matti Vartiainen, Taneli Kolström, Heli Peltola, Jouko Meriläinen

Journal:

Vegetation History and Archaeobotany

Year:

2008

Language:

english

File:

PDF, 586 KB

english, 2008

93

Centennial-to-millennial fluctuations in July temperatures in North Finland as recorded by timberline tree rings of Scots pine

Maxim Ogurtsov, Samuli Helama, Matti Eronen, Markus Lindholm

Journal:

Quaternary Research

Year:

2005

Language:

english

File:

PDF, 388 KB

english, 2005

94

Inter- and intra-seasonal effects of temperature variation on radial growth of alpine treeline Norway spruce

Helama, Samuli, Sutinen, Raimo

Journal:

Journal of Mountain Science

Year:

2016

Language:

english

File:

PDF, 930 KB

english, 2016

95

Palaeoclimatological and palaeolimnological records from fossil midges and tree-rings: the role of the North Atlantic Oscillation in eastern Finland through the Medieval Climate Anomaly and Little Ice Age

Tomi P. Luoto, Samuli Helama

Journal:

Quaternary Science Reviews

Year:

2010

Language:

english

File:

PDF, 1.15 MB

english, 2010

96

Connecting potential frost damage events identified from meteorological records to radial growth variation in Norway spruce and Scots pine

Suvanto, Susanne, Henttonen, Helena M., Nöjd, Pekka, Helama, Samuli, Repo, Tapani, Timonen, Mauri, Mäkinen, Harri

Journal:

Year:

2017

Language:

english

File:

PDF, 2.19 MB

english, 2017

97

X-ray microdensitometry applied to subfossil tree-rings: growth characteristics of ancient pines from the southern boreal forest zone in Finland at intra-annual to centennial time-scales

Samuli Helama, Matti Vartiainen, Taneli Kolström, Heli Peltola and Jouko Meriläinen

Journal:

Vegetation History and Archaeobotany

Year:

2008

Language:

english

File:

PDF, 2.67 MB

english, 2008

98

Last millennium Northern Hemisphere summer temperatures from tree rings: Part II, spatially resolved reconstructions

Anchukaitis, Kevin J., Wilson, Rob, Briffa, Keith R., Büntgen, Ulf, Cook, Edward R., D'Arrigo, Rosanne, Davi, Nicole, Esper, Jan, Frank, David, Gunnarson, Björn E., Hegerl, Gabi, Helama, Samuli, Kless

Journal:

Quaternary Science Reviews

Year:

2017

Language:

english

File:

PDF, 7.15 MB

english, 2017

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