MARC details
| 000 -LEADER |
|---|
| fixed length control field |
02740nam a2200289Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
|---|
| control field |
MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
|---|
| control field |
20250625160143.0 |
| 040 ## - CATALOGING SOURCE |
|---|
| Transcribing agency |
CICY |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
|---|
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
B-16016 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT |
|---|
| Title |
Ecological status of Beaucarnea gracilis, an endemic species of the semiarid Tehuacan Valley, Mexico |
| 490 0# - SERIES STATEMENT |
|---|
| Volume/sequential designation |
Conservation Biology, 11(2), p.367-374, 1997 |
| 520 3# - SUMMARY, ETC. |
|---|
| Summary, etc. |
We present a demographic analysis and suggestions for the conservation of Beaucarnea gracilis, a species endemic to the Tehuacan Valley, Puebla, Mexico. The species is dioecious, it flowers every year, and the breeding system and floral display are typical of a generalist mode of pollination. The density of B. gracilis in the study plot was 16.7 individuals/ha. Distribution of trunk diameter size classes fits a normal distribution (n = 404), but the smaller sizes were not found (< 0.7 m). The inflorescences were visited by 46 insect species. Over 2600 seeds are produced per inflorescence; 27-30 per cent are damaged by parasites, and the rest germinate readily (90-100 per cent). Survival of seeds and seedlings is very low. We found 313 seedlings in a 12-ha area, all (94.24 per cent)of which were at the base of nurse plants; particularly Mimosa luisiana and Castela tortuosa. The ecological status of the population of Beaucarnea gracilis is relatively good for adult individuals. In addition to low recruitment, (whether natural or human influenced), past extraction of seedlings for commerce, grazing by goats, and land clearing for corn cultivation, highway construction, and urbanization, are a real threat to the survival and establishment of seeds and seedlings. Conservation of this slow-growing, long-lived species should be promoted because (1)ecologically, it is a feeding center for many insect species, an important host for many Bromeliaceae, and part of the highly rich and endemic flora of Tehuacan and (2)economically, it helps low income people in the area (seedlings raised for commerce). Protection of nurse plants, regulation of grazing by goats, a halt to illegal extraction, and conservation of areas of the Tehuacan valley will help the survival of this species in nature. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
BEAUCARNEA GRACILIS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
BEAUCARNEA GRACILIS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
BROMELIACEAE |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
CASTELA TORTUOSA |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
MIMOSA LUISIANA |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
MIMOSACEAE |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
NOLINACEAE |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Cardel, Y. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Rico-Gray, V. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
García-Franco, J.G. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Thien, L.B. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
|---|
| Uniform Resource Identifier |
<a href="https://drive.google.com/file/d/1lfLi-j7KeHDLOleIudLDjeLpptwPjnQr/view?usp=drivesdk">https://drive.google.com/file/d/1lfLi-j7KeHDLOleIudLDjeLpptwPjnQr/view?usp=drivesdk</a> |
| Public note |
Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Clasificación local |
| Koha item type |
Documentos solicitados |
