MARC details
| 000 -LEADER |
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| fixed length control field |
02552nam a2200277Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20250625153934.0 |
| 040 ## - CATALOGING SOURCE |
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| Transcribing agency |
CICY |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
B-14085 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT |
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| Title |
Growth and spatial distribution of nutrient-absorbing organs: selective exploitation of soil heterogeneity |
| 490 0# - SERIES STATEMENT |
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| Volume/sequential designation |
Plant and Soil, 71, p.487-493, 1983 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
The soil is a heterogeneous medium with respect to decomposition activity and consequently with respect to nutrient availability. Roots of forest trees and hyphae of vesiculararbuscular mycorrhizal (VAM)fungi, principal nutrient absorbing organs, have previously been observed to associate with decomposing organic matter and other localized sites of nutrient availability in the soil. In two experiments in forests on contrasting soil types in Brazilian Amazonia, the association of tree roots with decomposing organic matter was shown to be a response of new root growth in the organic matter, not an avoidance of unfavorable conditions elsewhere in the soil volume. In laboratory experiments, the growth of VAM fungal hyphae was shown to respond to particles of decomposing organic matter in a way analogous to the response of forest tree roots. In both cases localized nutrient-rich sites (organic matter)were encountered by random growth of individual roots (hyphae)followed by increased branching after the encounter. Length of roots (and probably of hyphae)followed the negative binomial distribution, which is also found in other spatially aggregated organisms in heterogeneous environments. Although roots and hyphae operate in different size scales, the selective exploitation of localized nutrient-rich sites and the mechanism by which the advantageous physical placement comes about is strikingly similar. The highly branched roots and hyphae in association with decomposing organic matter should be advantageous when ion uptake is limited by either diffusion rate or competition with other organisms. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
EXTRAMATRICAL MYCELIUM |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
HYPHAL GROWTH |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
NEGATIVE BINOMIAL DISTRIBUTION |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
ROOT GROWTH |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
SOIL HETEROGENEITY |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
TROPICAL FOREST |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
VESICULAR-ARBUSCULAR MYCORRHIZAE |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
John, T.V.St. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Coleman, D.C. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Reid, C.P.P. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
|---|
| Uniform Resource Identifier |
<a href="https://drive.google.com/file/d/1_FRwnk-r8Ew3QdA2j2WQpU73Q8K-p_pN/view?usp=drivesdk">https://drive.google.com/file/d/1_FRwnk-r8Ew3QdA2j2WQpU73Q8K-p_pN/view?usp=drivesdk</a> |
| Public note |
Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Clasificación local |
| Koha item type |
Documentos solicitados |
