Microtine Rodent Dynamics in Northern Europe: Parameterized Models for the Predator-Prey Interaction

Ecology ◽  
1995 ◽  
Vol 76 (3) ◽  
pp. 840-850 ◽  
Author(s):  
Ilkka Hanski ◽  
Erkki KorpimÄki
Keyword(s):  
Northern Europe ◽  
Predator Prey ◽  
Prey Interaction ◽  
Microtine Rodent

Cyclic dynamics of eastern Canadian ermine populations

2000 ◽  
Vol 78 (5) ◽  
pp. 835-839 ◽  
Author(s):  
Donald R Johnson ◽  
Bradley J Swanson ◽  
Judith L Eger
Keyword(s):  
Latitudinal Gradient ◽  
Sampling Period ◽  
Predator Prey ◽  
First Order ◽  
Microtine Rodents ◽  
Prey Interaction ◽  
Microtine Rodent ◽  
Cyclic Dynamics ◽  
Rodent Populations

Based on partial autocorrelation analysis, 20 ermine (Mustela erminea) populations in Manitoba, Ontario, and Quebec demonstrated cyclic dynamics characterized by a latitudinal gradient of decreasing first-order feedback and increasing negativity of second-order feedback. Most of these populations exhibited three cyclic peaks and a 10-year interval of noncyclic dynamics during the sampling period (1915-1940). Changes in ermine density probably reflected those in the density of microtine rodents, their primary prey. Analysis of the limited number of long-term lemming and vole series from boreal North America indicated a latitudinal gradient in cyclic dynamics similar to that of microtine rodent populations in northern Europe. Complex geographic and temporal variation in ermine population dynamics, including cyclic, noncyclic, and shifting patterns of density change, supports the specialist-generalist hypothesis of predator-prey interaction at temperate latitudes.

scholarly journals Predator-prey Interaction between a Ciliated Protozoan Trochilioides recta and Filamentous Bacteria

1989 ◽  
Vol 12 (4) ◽  
pp. 239-245,231 ◽  
Author(s):  
Minako KOGA ◽  
Takeshi SEGUCHI ◽  
Tadahiro MORI ◽  
Yuhei INAMORI ◽  
Ryuichi SUDO
Keyword(s):  
Filamentous Bacteria ◽  
Ciliated Protozoan ◽  
Predator Prey ◽  
Prey Interaction
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