Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Johan Nelson"'
Autor:
Johan Nelson
Publikováno v:
Nordina: Nordic Studies in Science Education, Vol 2, Iss 2 (2012)
The textbook plays an important role in science education. It has been criticised, though, for several reasons, and therefore it is important to raise the question of whether the textbook is written and used in the most effective way. This article pr
Externí odkaz:
https://doaj.org/article/6193306400734fc69c744a9aad783141
Autor:
Johan Nelson, Clas Olander
This study investigated meaning-making of arrows in a representation of the greenhouse effect among 14-year-old secondary school students. Data was generated during Biology lessons where 74 students discussed how they interpreted a representation fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3dcd65547da2c9fd9e815a3f7706d4fc
http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-49192
http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-49192
Autor:
Johan Nelson
Publikováno v:
Johan Nelson
Theory on microtine mating systems predicts that male spacing behavior will be related to female spatial and temporal distribution. However, data from a natural population of field voles, Microtus agrestis, indicated a potential influence of female d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8a796ecfe659c430aec92291f95e17a
https://doi.org/10.1007/bf00177400
https://doi.org/10.1007/bf00177400
Publikováno v:
Canadian Journal of Zoology. 70:494-501
Differences in body weight, individual growth rate, survival, and recruitment of young between years were analysed in a noncyclic population of field voles (Microtus agrestis) to determine the respects in which this population differed from cyclic on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41dbc2c3e119fc9d203aa04f330dfd15
https://doi.org/10.1139/z92-074
https://doi.org/10.1139/z92-074
Publikováno v:
Oecologia. 86:153-158
Using mark-recapture data, we related the movements of adult field voles to population density, sex ratio and population growth. Dispersal movements (defined as distances larger than 1 home range diameter) were few in both sexes; 4 out of 197 (2.0%)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::474badea101697b526337ed375d56524
https://doi.org/10.1007/bf00317525
https://doi.org/10.1007/bf00317525
Publikováno v:
Acta Theriologica. 36:63-71
Mark-recapture, radiotelemetry, and behavioural tests were used to determine whether mechanisms suggested to cause cyclic patterns in microtine rodents are presented in a noncyclic Microtus agrestis (Linnaeus, 1761) population studied in southern Swe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f2bfd3049a668739aa70604988ad345
https://doi.org/10.4098/at.arch.91-3
https://doi.org/10.4098/at.arch.91-3
Publikováno v:
Journal of Mammalogy. 71:597-603
Home-range dynamics and the relation between population density, home-range size, and spacing pattern in a Microtus agrestis population were examined in a 2-year-long mark-recapture study. Home-range size varied with vole density. At high densities d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe6df44ff98840b0fd3ac25a295115f1
https://doi.org/10.2307/1381799
https://doi.org/10.2307/1381799
Publikováno v:
Social Systems and Population Cycles in Voles ISBN: 9783764324377
The relationship between spacing behavior and population dynamics of a noncyclic field vole (Microtus agrestis) population was examined in southern Sweden by mark-recapture and radiotracking. There was an annual decline in density over winter (nonbre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa1b8f8b1429478af6a98b188935e186
https://doi.org/10.1007/978-3-0348-6416-9_5
https://doi.org/10.1007/978-3-0348-6416-9_5
Autor:
Johan Nelson
Publikováno v:
Oikos. 73:9
The influence of male density on the spacing behaviour of male field voles, Microtus agrestis, was experimentally investigated in field enclosures. Males were radio-tracked at different densities (3 or 6 males per enclosure) with the same density of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6a34a08f5ed75be93d8d41b203b006f
https://doi.org/10.2307/3545719
https://doi.org/10.2307/3545719
Publikováno v:
Oikos. 61:73
Reproductive effort, an index of number of litters produced, for three age categories of females, was examined in a non-cyclic field vole population during the 1984 and 1985 breeding seasons using mark-recapture data. The three categories of females
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e88f7a5a5f56b84fa8db798b0674761a
https://doi.org/10.2307/3545408
https://doi.org/10.2307/3545408