Date
2011
Abstract
The purpose of this study is to monitor the fruit production of three woody tree species that occur on the Sevilleta National Wildlife Refuge (NWR). Two monoecious species, Pinus edulis and Quercus turbinella, are assessed, as is a dioecious species, Juniperus monosperma. In August, fruit production is estimated for the three species at five sites within the Sevilleta NWR. For each of the species different protocols are used for estimating fruit production: P. edulis estimates are made using the number of cones per mature tree, Q. turbinellla estimates utilize the number of acorns per 0.1m2 of canopy surface area, and J. monosperma estimates use the number of berries per twig on female trees. In addition, the age and/or size of each individual tree was assessed at the beginning of the study. For P. edulis and J. monosperma, distinctions continue to be made between young, medium, old, and very old trees; for Q. turbinella, canopy surface area is estimated.
Handle
http://hdl.handle.net/1928/30003.1
Other Identifier
SEV204
Knowledge Network for Biocomplexity (KNB) Identifier
knb-lter-sev.204.152607
Document Type
Dataset
Rights
Data Policies: This dataset is released to the public and may be freely downloaded. Please keep the designated Contact person informed of any plans to use the dataset. Consultation or collaboration with the original investigators is strongly encouraged. Publications and data products that make use of the dataset must include proper acknowledgement of the Sevilleta LTER. Datasets must be cited as in the example provided. A copy of any publications using these data must be supplied to the Sevilleta LTER Information Manager. By downloading any data you implicitly acknowledge the LTER Data Policy (http://www.lternet.edu/data/netpolicy.html).
Source
http://dx.doi.org/10.6073/pasta/63ce0ee0a5c00ae48e473ddd9a7ef68f
Temporal coverage
1997-01-01 - 2011-12-31
Spatial coverage
Location: The Cerro Montosa Pinyon-Juniper site has been the location of major Sevilleta LTER research since 1989. Meteorological trends, net primary productivity, rodent and ground-dwelling arthropod populations, mycorrhizal responses to fertilizer, pinyon-juniper fruit and nut production, and pinyon mortality are all being investigated at this site. Previous studies have included analyses of pinyon tree rings for regional climate reconstruction.Vegetation: The vegetation is New Mexico Pinyon-Juniper Woodland, dominated by Colorado pinyon (Pinus edulis) and one-seed juniper (Juniperus monosperma), and accompanied by gray oak (Quercus grisea). There is a diverse shrub component, including scrub live oak (Q. turbinella), mountain mahogany (Cercocarpus montanus), broom snakeweed (Gutierrezia sarothrae), sacahuista (Nolina microcarpa), red barberry (Mahonia haematocarpa), Apache plume (Fallugia paradoxa), tree cholla (Opuntia imbricata), skunkbush (Rhus trilobata), and banana yucca (Yucca baccata). Grass diversity is also high, and open spaces between trees are dominated by blue grama (Bouteloua gracilis), with hairy and sideoats grama (B. hirsuta and B. curtipendula) and black grama (B. eriopoda) also being significant. Other common grasses include purple threeawn (Aristida purpurea), wolftail (Lycurus phleoides), mountain and ring muhly (M. montanus and M. torreyi), and New Mexican porcupinegrass (Heterostipa neomexicana). Common forbs include small-flowered milkvetch (Astragalus nuttallianus), white sagebrush (Artemesia ludoviciana), Fendler’s arabis (Arabis fendleri), Fendler’s sandmat (Chamaesyce fendleri), New Mexico thistle (Cirsium neomexicanum), false pennyroyal (Hedeoma oblongifolia), bastard sage (Eriogonum wrightii), pingüe rubberweed (Hymenoxys richardsonii), large four o’clock (Mirabilis multiflora), Fendler's penstemon (Penstemon fendleri), and globemallows (Sphaeralcea hastulata and S. wrightii). , Location: The UNM Field Station and USFandWS Headquarters are the primary support facilities for all research conducted on the Sevilleta NWR. As such the area has also been important as a research site - especially as regards meteorology and monitoring of rodent populations for Hantavirus. While the breaks above and behind are characterized as black grama dominated desert grassland, the immediate area around the Field Station is best described as an ecotonal mixture of Plains-Mesa Sand Scrub and Great Basin Scrub vegetaion greatly influenced by honey mesquite (Prosopis glandulosa) and the drainages which bisect the area at regular intervals and support many one-seed Junipers (Juniperus monosperma). Dominant grasses include 4 species of dropseed (Sporobolis contractus, S. cryptandrus, S. flexuosus and S. airoides) and indian rice grass (Oryzopsis hymenoides)Location: The Goat Draw Juniper Savanna Core Site was established in 1998 in order to provide data at the lower end of the transition from the Pinon-Juniper Woodland habitat at the Cerro Montoso site to Juniper Savanna.Vegetation: While the site is positioned between two ridgelines, the vegetation is best characterized as Juniper Savanna, dominated by one-seed juniper (Juniperus monosperma), scrub liveoak (Quercus turbinella), and grama grasses (Bouteloua curtipendula, B. gracilis, B. eriopoda, and B. hirsuta), with scattered Colorado pinyon pine trees (Pinus edulis) in the upper reaches. There is also a significant influence of Arroyo Riparian vegetation in the main arroyo, Goat Draw, and its tributaries, siteid: 39
DOI
doi:10.6073/pasta/63ce0ee0a5c00ae48e473ddd9a7ef68f
Permanent URL
http://dx.doi.org/10.6073/pasta/63ce0ee0a5c00ae48e473ddd9a7ef68f
Recommended Citation
Zlotin, Roman (2011): Tree Mast Production in Pinyon-Juniper-Oak Forests at the Sevilleta National Wildlife Refuge, New Mexico (1997- ). Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/63ce0ee0a5c00ae48e473ddd9a7ef68f
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knb-lter-sev.204.152607-provenance.xml (3 kB)
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knb-lter-sev.204.152607-report.html (25 kB)
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sev204_mastproductionall_10222012.txt (542 kB)
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Comments
This dataset was originally published on the Long Term Ecological Research (LTER) Network Data Portal, https://portal.lternet.edu, and potentially via other repositories or portals as described. The Digital Object Identifier (DOI) of the source data package is doi:10.6073/pasta/63ce0ee0a5c00ae48e473ddd9a7ef68f, and may be accessed at http://dx.doi.org/10.6073/pasta/63ce0ee0a5c00ae48e473ddd9a7ef68f. Metadata and files included in this record mirror as closely as possible the source data and documentation, with the provenance metadata and quality report generated by the LTER portal reproduced here as '*-provenance.xml' and *-report.html' files, respectively.