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1. Allometric equations for predicting Puerto Rican dry forest biomass and volume

Author:
Brandeis, Thomas; Delaney, Matthew; Royer, Larry; Parresol, Bernard
Source:
Proceedings of the eighth annual Forest Inventory and Analysis Symposium : Monterey, CA, October 16-19, 2006 / edited by Ronald E. McRoberts ... [et al.] pp. -
Subject:
tropical forests; allometry; equations; forest inventory; mixed forests; biomass; forest trees; stems; volume; tree and stand measurements; regression analysis; statistical models; Puerto Rico
Abstract:
... We used forest inventory data, intensive tree measurement, destructive sampling in the field, and subsequent laboratory analyses to develop regression equations that estimate tree biomass, merchantable volume, and total volume for upland forests in Puerto Rican subtropical dry forest. Most parsimonious and additive biomass equations for mixed, dry forest species were fitted to data from 30 destruc ...
Handle:
10113/42052

2. 24. On Relative Growth in Asellus aquaticus

Author:
A. E. Needham
Source:
Proceedings of the Zoological Society of London 1937 v.A107 no.3 pp. 289-313
ISSN:
0370-2774
Subject:
Asellus aquaticus; abdomen; allometry; developmental stages; females; growth retardation; head; males; periodicity; population growth; vertebrates
Abstract:
... 1 In the relative growth of various width dimensions and total length in Asellus aquaticus the mean course of the later stages of growth shows simple allometry. 2 In detail, however, the growth‐curves show a regular rhythmicity which is essentially similar in all segments. It is suggested that the rhythmicity may be due to cyclic phenomena in absolute growth, the periodicity of the cycles in width ...
DOI:
10.1111/j.1096-3642.1937.tb00813.x

3. 31. Relative Growth in Amphibia

Author:
F. March
Source:
Proceedings of the Zoological Society of London 1937 v.A107 no.3 pp. 415-469
ISSN:
0370-2774
Subject:
Rana; Salamandra; Ursidae; allometry; animal ovaries; autumn; body length; breeding season; cod (fish); equations; females; frogs; hibernation; kidneys; liver; males; ova; oviducts; puberty; salamanders and newts; seasonal variation; seminal vesicles; spermatozoa; spring; summer; tadpoles; testes; tissues; weight loss
Abstract:
... : 1 The length of the hind limb of R. temporaria bears to the body length a linear relationship, which can be expressed by the equation y=ax+b. There is a change in the value of the constants a and b at a point which marks the onset of puberty in the female. 2 The weight of amphibians as deduced from mean group measurements of R. temporaria, T. cristatus, S. maculose, A. tigrinum, and R. esculenta ...
DOI:
10.1111/j.1096-3642.1937.tb00820.x

4. A Functional Analysis of Morphological Variation and Differential Niche Utilization in Basilisk Lizards

Author:
Joshua Laerm
Source:
Ecology 1974 v.55 no.2 pp. 404-411
ISSN:
0012-9658
Subject:
allometry; body size; habitat preferences; habitats; intraspecific variation; least squares; lizards; water
Abstract:
... The functional basis for the relationship between morphological variation and differential niche utilization within and between two species of Basilisk lizards was studied. Variation in body size and allometric changes in the size of functional elements of the hindlimb are correlated with interspecific and intraspecific differences in habitat distribution as well as the behavioral preference and f ...
DOI:
10.2307/1935228

5. Allometric growth studies of the carrot crop. I. Effects of plant development and cultivar

Author:
Stanhill, G.
Source:
Annals of botany 1977 v.41 no.173 pp. 533-540
ISSN:
0305-7364
Subject:
allometry; carrots; cultivars; equations; field experimentation; flowering; germination; leaves; roots; tap roots; California; Russia
Abstract:
... The allometric equation Y = aWk was fitted to data from a field experiment in which carrots were harvested at 14 weekly intervals from a succession of 14 weekly sowings. Use of the allometric equation enabled more than 95 per cent of the variation in the weight of tap roots (Y), to be accounted for by reference to the weight of leaves (W). The residual mean square error of the predicted root weigh ...
DOI:
10.1093/oxfordjournals.aob.a085323

6. Allometric growth studies of the carrot crop. II. Effects of cultural practices and climatic environment

Author:
Stanhill, G.
Source:
Annals of botany 1977 v.41 no.173 pp. 541-552
ISSN:
0305-7364
Subject:
allometry; carrots; defoliation; equations; field experimentation; leaves; plant density; root growth; roots; soil nutrients; surveys; temperature
Abstract:
... A series of experiments showed that in the carrot plant, the ratio of relative growth rates of roots to that of the leaves, reached its maximum at intermediate plant densities, low soil moisture deficits and when root and leaf temperature were both close to 18 °C. Application of soil nutrients had only a minor effect. Defoliation reduced relative root growth, but in a field experiment, the increas ...
DOI:
10.1093/oxfordjournals.aob.a085324

7. Developmental Allometry and Its Implication to Grain Yield in Barley

Author:
Zakri A. Hamid; J. E. Grafius
Source:
Crop science 1978 v.18 no.1 pp. 83-86
ISSN:
0011-183X
Subject:
Hordeum; allometry; backcrossing; barley; culms; cultivars; gene pool; genotype; grain yield; leaf area; leaves; photosynthesis; plant organs; seeds; tillers; yield components
Abstract:
... Five parental pairs of barley selections (Hordeum vulgate L. Emend. Lam) exhibiting differences in leaf area (S) and culm diameter (D) were used in this experiment. The crosses and backcrosses to each parent were allowed to self to the equivalent of the F₄ at which time 20 random plant selections were drawn from each of the 15 populations. Seed was increased for two generations and standard nurser ...
DOI:
10.2135/cropsci1978.0011183X001800010022x

8. A comparative study of the buccal pumping mechanism of tadpoles

Author:
Source:
Biological journal of the Linnean Society 1979 v.12 no.3 pp. -
ISSN:
0024-4066
Subject:
Lithobates sylvaticus; tadpoles; Xenopus laevis; allometry; Lithobates catesbeianus; ecology; models; mouth; streams; body length; stroke; geometry
Abstract:
... To understand the ecological significance of diversity in the buccal pump morphology of anuran larvae we have developed a descriptive geometric model of the tadpole buccal pump. The model allows comparison of the buccal puinping mechanism of different species. The reliability of the model was established by comparing buccal volumes predicted by the model with buccal volumes reported in the literat ...
DOI:
10.1111/j.1095-8312.1979.tb00056.x

9. Evolution of skull shape in carnivores: 1. Representative modern carnivores

Author:
Source:
Biological journal of the Linnean Society 1981 v.15 no.4 pp. 369-388
ISSN:
0024-4066
Subject:
Canidae; Felidae; allometry; carnivores; equations; evolution; neck; principal component analysis; skull; surveys
Abstract:
... Fifteen variables, selected primarily to reflect functionally significant aspects of cranial morphology, were measured on one skull each of 62 species of modern carnivores, including viverrids, canids, mustelids and felids. To allow comparisons between species of different sizes without the potentially confounding effects of allometric shape changes, the measurements were transformed to dimensionl ...
DOI:
10.1111/j.1095-8312.1981.tb00770.x

10. Genetic analysis of renal function in mice. 1. Glomerular filtration rate and its correlation with body and kidney weight

Author:
H. Hackbarth; D. Hackbarth
Source:
Laboratory animals 1981 v.15 no.3 pp. 267-272
ISSN:
1758-1117
Subject:
allometry; analysis of covariance; body weight; genetic analysis; glomerular filtration rate; heat production; kidneys; laboratory animals; males; mice
Abstract:
... Investigation of 18 inbred and 6 F₁ hybrid mouse strains has shown that the glomerular filtration rate, bodyweight and kidney weight showed strain- and sex-dependent differences. Covariance analysis showed stronger correlations (genetic and environmental) between glomerular filtration rate and bodyweight than between glomerular filtration rate and kidney weight. This was predominantly due to a hig ...
DOI:
10.1258/002367781780893731
PubMed:
7289578

11. Anuran Size at Metamorphosis: Experimental Test of a Model Based on Intraspecific Competition

Author:
Joseph Travis
Source:
Ecology 1984 v.65 no.4 pp. 1155-1160
ISSN:
0012-9658
Subject:
Anura; allometry; amphibians; intraspecific competition; larvae; larval development; metamorphosis; models; rearing
Abstract:
... Size at metamorphosis and length of larval period are often, but not invariably, correlated within cohorts of larval anurans. Collins (1979) proposed intraspecific competition as one causative agent for such a correlation in nature, and this hypothesis was supported by observational data. This study reports the results of an experimental test of that hypothesis. Isolated larvae were reared at one ...
DOI:
10.2307/1938323

12. Leaf Area Development in Field-Grown Soybeans

Author:
T. R. Sinclair
Source:
Agronomy journal 1984 v.76 no.1 pp. 141-146
ISSN:
0002-1962
Subject:
Glycine max; Paleudalfs; allometry; crop yield; cultivars; leaf area; prediction; sand; soybeans; temperature
Abstract:
... Leaf area is critical for crop light interception, and thereby has a substantial influence on crop yield. In this research an attempt was made to characterize the development of soybean [Glycine max (L.) Merr.] leaf area by examining the process in two phases. First, the rate of increase of plastochron index as a function of temperature was evaluated under field conditions. A total of seven cultiv ...
DOI:
10.2134/agronj1984.00021962007600010034x

13. Seedling architecture and life history evolution in pines

Author:
Strauss, S.H.; Ledig, F.T.
Source:
American naturalist 1985 v.125 no.5 pp. 702-715
ISSN:
0003-0147
Subject:
Pinus; seedlings; allometry; phylogeny
DOI:
10.1086/284373

14. Genetic and phenotypic correlations in a natural population of song sparrows

Author:
Schluter, Dolph; Smith, James N.M.
Source:
Biological journal of the Linnean Society 1986 v.29 no.1 pp. 23-36
ISSN:
0024-4066
Subject:
Fringillidae; allometry; beak; heritability; introgression; natural selection; phenotypic correlation; variance
Abstract:
... We estimated heritabilities, and genetic and phenotypic correlations between beak and body traits in the song sparrow (Melospiza melodia). We compared these estimates to values for the same traits in the Galápagos finches, Geospiza (Boag, 1983; Grant, 1983). Morphological variance is low in the song sparrow, and our results show that genetic and phenotypic correlations are considerably lower than ...
DOI:
10.1111/j.1095-8312.1986.tb01768.x

15. Home Range, Time, and Body Size in Mammals

Author:
Stan L. Lindstedt; Brian J. Miller; Steven W. Buskirk
Source:
Ecology 1986 v.67 no.2 pp. 413-418
ISSN:
0012-9658
Subject:
allometry; body size; carnivores; equations; habitats; herbivores; home range; latitude; mammals; muscle contraction; social structure; telemetry
Abstract:
... The relationship between home range area and body size of terrestrial mammals is reconsidered in light of the concept of biological time. Biological time is an internal, body—mass—dependent, time scale to which the durations (of rates) of biological events are entrained. These events range from purely physiological (e.g., muscle contraction time) to purely ecological (e.g., time to traverse home r ...
DOI:
10.2307/1938584

16. Maturing patterns of organ weights in mice selected for rapid postweaning gain

Author:
Eisen, E.J.
Source:
Theoretical and applied genetics 1986 v.73 no.1 pp. 148-157
ISSN:
0040-5752
Subject:
mice; allometry; animal organs
DOI:
10.1007/BF00273732
PubMed:
24240761

17. Allometric effects on plant interference

Author:
Morris, E.C.; Myerscough, P.J.
Source:
Annals of botany 1987 v.59 no.6 pp. 629-633
ISSN:
0305-7364
Subject:
weight; allometry; plant density; plant competition; continuous cropping; roots; shoots
Abstract:
... The way interference develops in even-aged monocultures is usually judged from the progression of weight-density curves that the stands exhibit. For whole plant weight-density curves this development of interference is unaffected by root:shoot allometric changes in themselves. However, for weight (of a plant part) - density curves, e.g. shoot weight - density curves, differing root:shoot allometri ...
DOI:
10.1093/oxfordjournals.aob.a087359

18. Allometric root/shoot relationships and predicted water uptake for desert succulents

Author:
Hunt, E.R. Jr.; Nobel, P.S.
Source:
Annals of botany 1987 v.59 no.5 pp. 571-577
ISSN:
0305-7364
Subject:
volume; allometry; models; Ferocactus acanthodes; plant morphology; xerophytes; Agave deserti; water uptake; roots; prediction; shoots
Abstract:
... Root morphology, shoot morphology, and water uptake for Agave deserti and Ferocactus acanthodes of various sizes were studied using allometric relationships (y = axb) and a previously developed water uptake model. Shoot surface area increased with shoot volume with an exponent b of 0.75 for both species. Root length and the ground area explored by the roots increased with shoot surface area with b ...
DOI:
10.1093/oxfordjournals.aob.a087351

19. Fat distribution and indices of carcass composition in Coats Island caribou (Rangifer tarandus groenlandicus)

Author:
Adamczewski, J.Z.; Gates, C.C.; Hudson, R.J.
Source:
Canadian journal of zoology 1987 v.65 no.2 pp. 368-374
ISSN:
0008-4301
Subject:
reindeer; carcass composition; lipids; muscles; allometry; carcass weight; Northwest Territories
DOI:
10.1139/z87-057

20. Field Metabolic Rate and Food Requirement Scaling in Mammals and Birds

Author:
Kenneth A. Nagy
Source:
Ecological monographs 1987 v.57 no.2 pp. 111-128
ISSN:
0012-9615
Subject:
Iguanidae; Metatheria; Passeriformes; allometry; ectothermy; endothermy; energy costs; equations; herbivores; lizards; metabolism; prediction; rodents; seabirds
Abstract:
... Field metabolic rates (FMRs or HF), all measured using doubly labeled water, of 23 species of eutherian mammals, 13 species of marsupial mammals, and 25 species of birds were summarized and analyzed allometrically (log₁ ₀—log₁ ₀ regressions). FMR is strongly correlated with body mass in each of these groups. FMR scales differently than does basal or standard metabolic rate in eutherians (FMR slope ...
DOI:
10.2307/1942620