scholarly journals Shrub Invasion of a Southern New Mexico Desert Grassland Range

1958 ◽  
Vol 11 (3) ◽  
pp. 129 ◽  
Author(s):  
Bruce L. Branscomb



2011 ◽  
Vol 40 (5) ◽  
pp. 1051-1066 ◽  
Author(s):  
Robert R. Parmenter ◽  
Melissa Kreutzian ◽  
Douglas I. Moore ◽  
David C. Lightfoot


2012 ◽  
Vol 57 (4) ◽  
pp. 361-369 ◽  
Author(s):  
Louis C. Bender ◽  
Roger A. Baldwin ◽  
Jessica R. Piasecke


2014 ◽  
Vol 4 ◽  
Author(s):  
Farhad Khormali ◽  
Y. Feng ◽  
Curtis Monger

Manipulative experiments—characterized by the comparing treatments to controls—are widespread in scientific investigations. This study uses experimental micropedology to investigate whether soil microbes precipitate carbonate if a liquid growth-medium is applied to soil in situ. This was undertaken using apparatuses designed to (1) obtain micromorphological images of biogenic carbonate on microscope slides, (2) to quantify carbonate formation in fiberglass cloths, and (3) to measure associated carbon-isotope fractionations. The apparatuses were buried and harvested at monthly intervals from December 2010 to June 2011. The study was conducted along an ecological transect in New Mexico, USA, at three sites: a low-elevation desert (C3 shrubs), an intermediate-elevation steppe (C4 grasses), and a high-elevation forest (C3 conifers). In addition to comparing bioclimatic zones, the effect of parent material was also tested using paired limestone and igneous soils at each site. Microscope slides were analyzed with binocular, petrographic, and scanning electron microscopy equipped with an x-ray microanalyser (EDS), and the fiberglass traps were analyzed with x-ray diffraction and a mass spectrometer for carbon concentrations and isotope ratios. Naturally occurring calcified microbes were found at each site in the form of calcified hyphae, needle fiber, and calcified root hairs, with the exception of the forest site on igneous parent material. Liquid growth medium induced microbial calcification regardless of whether the vegetation was desert shrubs, grassland, or forest, and regardless of whether the parent material was igneous or limestone. Thus, the ability of soil microorganisms to biomineralize carbonate when supplied with liquid growth medium in situ is a phenomenon that crosses biomes and is not limited to microbes endemic to either limestone or igneous parent material.



Ecology ◽  
2021 ◽  
Author(s):  
Erica Christensen ◽  
Darren James ◽  
Connie Maxwell ◽  
Amalia Slaughter ◽  
Peter B. Adler ◽  
...  


1984 ◽  
Vol 22 (3) ◽  
pp. 344-360 ◽  
Author(s):  
Thomas R. Van Devender ◽  
Julio L. Betancourt ◽  
Mark Wimberly

Thirteen packrat (Neotoma spp.) and two porcupine (Erethizon dorsatum) middens from 1555 to 1690 m elevation from the Sacramento Mountains, New Mexico, provide an 18,000-yr vegetation record in the northern Chiuahuan Desert. The vegetation sequence is a mesic, Wisconsin fullglacial (18,000–16,000 yr B.P.) pinyon-juniper-oak woodland; a xeric, early Holocene (ca. 11,000–8000 yr B.P.) juniper-oak woodland; a middle Holocene (ca. 8000-4000 yr B.P.) desert-grassland; and a late Holocene (ca. 4000 yr B.P. to present) Chihuahuan desertscrub. The frequency of spring freezes and summer droughts in the late Wisconsin probably set the northern limits of Pinus edulis and Juniperus monosperma at about 34°N, or 6° south of today's limit. Rising summer tempratures in the early Holocene eliminated pinyon and other mesic woodland plants from the desert lowlands and allowed the woodland to move upslope. At this time pinyon-juniper woodland and pine forest dominated by Pinus ponderosa probably began their spectacular Holocene expansions to the north. Continued warming in the middle Holocene led to very warm summers with strong monsoons, relatively dry, cold winters, and widespread desert-grasslands. Desertscrub communities in the northern Chihuahuan Desert did not develop until the late Holocene when the biseasonal rainfall shifted slightly back toward the winter, catastrophic winter freezes decreased, and droughts in all seasons increased. The creosote bush desertscrub corridor across the Continental Divide between the Chihuahuan and Sonoran deserts was probably connected for the first time since the last interglaciation.



10.2307/3404 ◽  
1973 ◽  
Vol 42 (1) ◽  
pp. 19 ◽  
Author(s):  
Susan E. Riechert ◽  
William G. Reeder ◽  
Timothy A. Allen


Oecologia ◽  
2011 ◽  
Vol 169 (2) ◽  
pp. 373-383 ◽  
Author(s):  
Heather L. Throop ◽  
Lara G. Reichmann ◽  
Osvaldo E. Sala ◽  
Steven R. Archer


1950 ◽  
Vol 3 (3) ◽  
pp. 172 ◽  
Author(s):  
Albert L. Brown


2007 ◽  
Vol 85 (3) ◽  
pp. 317-332 ◽  
Author(s):  
Junran Li ◽  
Gregory S. Okin ◽  
Lorelei Alvarez ◽  
Howard Epstein


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