MARC details
| 000 -LEADER |
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| fixed length control field |
02776nam a2200289Ia 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 |
20250625153926.0 |
| 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-13615 |
| 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 |
Biological nitrogen fixation in secondary regrowth and mature rainforest of central Amazonia |
| 490 0# - SERIES STATEMENT |
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| Volume/sequential designation |
Agriculture, Ecosystems and Environment, 111(1-4), p.237-252, 2005 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Slash-and-burn land use offsets heavy nitrogen losses both via volatisation and nitrate leaching. Biological nitrogen fixation (BNF)by legume-rhizobia symbiosis is believed to be the main pathway for secondary fallow regrowth to recuperate these losses, thus constituting an important mechanism for maintaining the sustainability of this agro-ecosystem. By contrast, BNF in mature rainforest is believed to be low. However, these assumptions have never been unambiguously verified, since serious methodological constraints make all quantitative BNF estimates in tropical forests questionable. The present study, therefore, pursues indirect evidence on the role of BNF in 2-25 years of secondary forest regrowth and in mature rainforest of central Amazonia, at 100 km to the north and 70 km to the east of the city of Manaus, Brazil. We show BNF to be high throughout secondary regrowth, as opposed to low BNF in mature rainforest. Our main evidence is based on the high vegetation share of legume species capable of BNF in secondary regrowth as opposed to lower shares in mature rainforest. Furthermore, clusters of potentially N2-fixing legumes in secondary regrowth but not in mature rainforest were associated with low d15N-signals of leaf litter and with an above-average vegetation biomass. Positive correlations between the individual plant sizes and foliar d15Nsignals of potentially N2-fixing legumes suggest that physiological limitations in the dominating legume tree giants may be one factor responsible for the low BNF in mature rainforest. The role of legume BNF appears quite constant throughout the first 25 years of secondary forest regrowth covered by this study, contrary to previous notions on a BNF maximum in early or midsuccession. Thus, BNF-rates do not provide an adequate criteria for defining minimum or optimum fallow periods. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
15N NATURAL ABUNDANCE |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
BNF |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
ISOTOPE DILUTION |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
LEGUME |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
NODULATION |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
SLASH-AND-BURN |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
SUCCESSION |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Gehring, C. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Vlek, P.L.G. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
De Souza, L.A.G. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Denich, M. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="https://drive.google.com/file/d/146WDzkIUpjrN9UdaWjM0xbVMCRlQWhBY/view?usp=drivesdk">https://drive.google.com/file/d/146WDzkIUpjrN9UdaWjM0xbVMCRlQWhBY/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 |
