Standing crops of elements and atomic ratios in a small mammal community

Beyers, Robert J.; Smith, Michael H.; Gentry, John B.; Ramsey, Linda L.

doi:10.4098/at.arch.71-14

Cited by 12 publications

(2 citation statements)

References 15 publications

(6 reference statements)

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“…1 Food ingested per day was 8.2 g for laboratory animals (this study) and 6.7 g for field animals (B r i e s e, 1973). 2 Amounts given in mg. 3 Amounts given in ng.…”

Section: Mathematical Analysesmentioning

confidence: 99%

“…Although elemental concentrations and standing crops of small mammals have been studied (Beyers et al, 1971; Nab hoi z, 1973; Sella, 1973;Gentry et al, 1975), little is known concerning elemental flow through the small mammal component of ecosystems. Considerable effort has been devoted to the study of elemental absorption and excretion in mammals in the laboratory {e.g., see review by Wiseman, 1964); however, most of these techniques are not feasible for use in the field.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Digestibility and elemental assimilation in cotton rats

Kaufman¹,

O’Farrell²,

Kaufman³

et al. 1976

Acta Theriol.

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Digestibility (82%) was measured directly for 10 cotton rats in the laboratory. Subsequently, digestibility was estimated using the ratio of ash in food and feces as well as the ratio technique with 15 specific elements. Digestibility estimates were all too low, therefore, the fecal ash values were corrected relative to a digestibility of 82%. Using the same correction factor with the modified ash ratio technique, digestibility was estimated to be 78% under field conditions. Digestibility values for the 23 field-caught cotton rats were all too low using the ratio technique for the 15 specific elements, however, the Ba estimate was 76%. Assimilation of each element under both laboratory and field conditions were estimated from digestibility values and the elemental concentration data for stomach contents and feces. Problems with estimating elemental assimilation are discussed relative to the specific elements examined.

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“…1 Food ingested per day was 8.2 g for laboratory animals (this study) and 6.7 g for field animals (B r i e s e, 1973). 2 Amounts given in mg. 3 Amounts given in ng.…”

Section: Mathematical Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Digestibility and elemental assimilation in cotton rats

Kaufman¹,

O’Farrell²,

Kaufman³

et al. 1976

Acta Theriol.

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Tropical Ecosystem Structure and Function

Lugo¹,

Brinson²,

Vivas³

et al. 1974

Fragile Ecosystems

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The effect of habitat geology on calcium intake and calcium status of wild rodents

Shore¹,

Balment

Yalden

1991

Oecologia

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Calcium is essential for normal physiological function, reproduction and growth in mammals but its distribution in the natural environment is heterogeneous. Spatial variation in calcium soil content is especially marked in the Peak District, United Kingdom, where both calcium-rich limestone and calcium-poor gritstone rock types occur. Wood mice Apodemus sylvaticus (L) and bank voles Clethrionomys glareolus (Schreber 1780) from limestone areas had significantly higher calcium concentrations in stomach contents and in faeces compared with their counterparts from gritstone areas. Calcium status was assessed from serum calcium concentration, femur weight, ash content of the body, calcium concentration in the femur and body ash. There was no significant difference in serum calcium concentration, femur calcium concentration and body ash calcium concentration between animals from the limestone and the gritstone. However, on the limestone, bank voles, but not wood mice, had significantly heavier femora and a greater proportion of ash in the body compared with their gritstone counterparts.

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Standing crops of elements and atomic ratios in a small mammal community

Cited by 12 publications

References 15 publications

Digestibility and elemental assimilation in cotton rats

Digestibility and elemental assimilation in cotton rats

Tropical Ecosystem Structure and Function

The effect of habitat geology on calcium intake and calcium status of wild rodents

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