Now showing items 1-10 of 60
Electrode technique
(Birkhäuser-Verlag; Birkhäuser Verlag ; Springer Science+Business Media, 1980-11)
Alarm calling behavior of the thirteen-lined ground squirrel, Spermophilus tridecemlineatus
(Springer-Verlag, 1980-09)
Alarm calling in a population of thirteenlined ground squirrels, Spermophilus tridecemlineatus , was studied over a three-year period. Data on ground squirrel reactions to human and canine approaches and to the approach ...
Regulation of insulin responsiveness in rat hepatoma cells
(Elsevier, 1980-02-12)
Insulin causes a 5 to 10-fold increase in the velocity of [alpha]-aminoisobutyric acid transport and a 2 to 3-fold increase in tyrosine aminotransferase activity in dexamethasone-treated hepatoma tissue culture cells. ...
Description of understory development in a tree plantation with a new method of data structuring
(Kluwer Academic Publishers; Dr. W. Junk B.V. Publishers ; Springer Science+Business Media, 1980-02)
During May and June, 1974, relevés were obtained from 30 plantation stands in the Saginaw Forest in southeastern Michigan. The canopy trees in these plantations were planted between 1904 and 1938. The understory has developed ...
Monitoring river periphyton with artificial benthic substrates
(Kluwer Academic Publishers; Dr. W. Junk B.V. Publishers ; Springer Science+Business Media, 1980-03)
The objective of this research was to identify the materials and methods necessary to study the attached algal community on a river bottom in deep water. The study site was the Susquehanna River near Falls, Pennsylvania. ...
Effectiveness of size frequency distributions in regulating intraspecific spatial overlap of stream insects
(Martinus Nijhoff/Dr. W. Junk Publishers; Dr. W. Junk b. v. Publishers ; Springer Science+Business Media, 1980-06)
Spatial niche breadth and overlap of size groups of four species of epilithic stream insects were studied to determine if broad size frequency distributions serve to reduce intraspecific competition for space. Mean niche ...
A class of models of selectively neutral alleles
(Elsevier, 1980-10)
Using exchangeability as a statistical analog of neutrality, we derive a generalized sampling distribution for neutral alleles. The distribution depends upon a parameter that determines the underlying marginal distribution ...
Communication and mutual resource exchange in north Florida hermit crabs
(Springer-Verlag, 1980-09)
The patterns of shell exchange in three species of hermit crabs which overlap in distribution and shell use were observed in the laboratory. Crabs showed no tendency to initiate more exchanges with conspecifics as compared ...
The grass-roots modernization in a Japanese Village
(Kluwer Academic Publishers; Akademische Verlagsgesellschaft ; Springer Science+Business Media, 1980-05)
The critical role played by national or central direction in Japan's modernization is well recognized, but the role of rural Japan in the nation's modernizing process has not been adequately understood. Ways of life in ...
Growth equations: A general equation and a survey of special cases
(Elsevier, 1980-04)
Although growth in its various manifestations has been studied for centuries and although there are a large number of well-established growth "laws," that work is almost entirely empirical and lacks a theoretical foundation ...