Journal ArticleDOI
Factors determining soil microbial biomass and nutrient immobilization in desert soils
TLDR
In this paper, the authors examined the 10-day response of soil microbial biomass-N to additions of carbon (dextrose) and nitrogen (NH4NO3) to water-amended soils in a factorial experiment in four plant communities of the Chihuahuan desert of New Mexico (U.S.A.).Abstract:
We examined the 10-day response of soil microbial biomass-N to additions of carbon (dextrose) and nitrogen (NH4NO3) to water-amended soils in a factorial experiment in four plant communities of the Chihuahuan desert of New Mexico (U.S.A.). In each site, microbial biomass-N and soil carbohydrates increased and extractable soil N decreased in response to watering alone. Fertilization with N increased microbial biomass-N in grassland soils; whereas, fertilization with C increased microbial biomass-N and decreased extractable N and P in all communities dominated by shrubs, which have invaded large areas of grassland in the Chihuahuan desert during the last 100 years. Our results support the hypothesis that the control of soil microbial biomass shifts from N to C when the ratio of C to N decreases during desertification.read more
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Journal ArticleDOI
Plant Species Richness and Ecosystem Multifunctionality in Global Drylands
Fernando T. Maestre,José L. Quero,Nicholas J. Gotelli,Adrián Escudero,Victoria Ochoa,Manuel Delgado-Baquerizo,Miguel García-Gómez,Miguel García-Gómez,Matthew A. Bowker,Santiago Soliveres,Cristina Escolar,Pablo García-Palacios,Miguel Berdugo,Enrique Valencia,Beatriz Gozalo,Antonio Gallardo,Lorgio E. Aguilera,Tulio Arredondo,Julio Blones,Bertrand Boeken,Donaldo Bran,Abel Augusto Conceição,Omar Cabrera,Mohamed Chaieb,Mchich Derak,David J. Eldridge,Carlos I. Espinosa,Adriana Florentino,Juan José Gaitán,M. Gabriel Gatica,Wahida Ghiloufi,Susana Gómez-González,Julio R. Gutiérrez,Rosa M. Hernández,Xuewen Huang,Elisabeth Huber-Sannwald,Mohammad Jankju,Maria N. Miriti,Jorge Monerris,Rebecca L. Mau,Ernesto Morici,Kamal Naseri,Abelardo Ospina,Vicente Polo,Aníbal Prina,Eduardo Pucheta,David A. Ramírez-Collantes,R. L. Romão,Matthew Tighe,Cristian Torres-Díaz,James Val,José P. Veiga,Deli Wang,Eli Zaady +53 more
TL;DR: A global empirical study relating plant species richness and abiotic factors to multifunctionality in drylands, which collectively cover 41% of Earth’s land surface and support over 38% of the human population, suggests that the preservation of plant biodiversity is crucial to buffer negative effects of climate change and desertification in dryland.
Supporting Online Material for Plant Species Richness and Ecosystem Multifunctionality in Global Drylands
Fernando T. Maestre,José L. Quero,Nicholas J. Gotelli,Adrián Escudero,Manuel Delgado-Baquerizo,Miguel García-Gómez,Matthew A. Bowker,Santiago Soliveres,Cristina Escolar,Pablo García-Palacios,Miguel Berdugo,Beatriz Gozalo,Antonio Gallardo,Lorgio E. Aguilera,Tulio Arredondo,Bertrand Boeken,Donaldo Bran,Abel A. Conceição,Omar Cabrera,Mchich Derak,David J. Eldridge,Carlos I. Espinosa,Adriana Florentino,M. Gabriel Gatica,Wahida Ghiloufi,Susana Gómez-González,Julio R. Gutiérrez,Rosa Mary Hernández,Xuewen Huang,Elisabeth Huber-Sannwald,Mohammad Jankju,Maria N. Miriti,Jorge Monerris,Rebecca L. Mau,Ernesto Morici,Kamal Naseri,Vicente Polo,Aníbal Prina,Eduardo Pucheta,David A. Ramírez-Collantes,R. L. Romão,Matthew Tighe,Cristian Torres-Díaz,James Val,José P. Veiga,Eli Zaady +45 more
TL;DR: Fernando T. Maestre,* Jose L. Quero, Nicholas J. Gotelli, Adrian Escudero, Victoria Ochoa, Manuel Delgado-Baquerizo, Miguel Garcia-Gomez, Matthew A. Eldridge, Carlos I. Espinosa, Adriana Florentino, Juan Gaitan, M. Gabriel Gatica, Wahida Ghiloufi, Susana Gomez-Gonzalez, Julio R. Gutierrez, Rosa M. Veiga, Deli Wang, Eli Zaady
Journal ArticleDOI
Impact of drought on desert shrubs : Effects of seasonality and degree of resource island development
TL;DR: In this paper, the authors investigate the role of autogenic shrub effects on ecosystem processes, which lead to the formation of resource islands and tend to promote shrub persistence in semiarid grasslands.
Book ChapterDOI
Plant-soil interactions in deserts
TL;DR: Geostatistical analyses show that the distribution of soil N, P and K is strongly associated with the presence of shrubs in desert habitats as mentioned in this paper, and that shrubs concentrate the biogeochemical cycle of these elements in "islands of fertility" that are localized beneath their canopies.
Journal ArticleDOI
Links between plant litter chemistry, species diversity, and below-ground ecosystem function
TL;DR: It is shown that soil C and N cycling during decomposition are controlled by the composition and diversity of chemical compounds within plant litter mixtures, rather than by simple metrics of plant species diversity.
References
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Journal ArticleDOI
Colorimetric Method for Determination of Sugars and Related Substances
TL;DR: In this article, a method was developed to determine submicro amounts of sugars and related substances using a phenol-sulfuric acid reaction, which is useful for the determination of the composition of polysaccharides and their methyl derivatives.
Journal ArticleDOI
A modified single solution method for the determination of phosphate in natural waters
J. Murphy,J.P. Riley +1 more
TL;DR: In this article, a single solution reagent was described for the determination of phosphorus in sea water, which consists of an acidified solution of ammonium molybdate containing ascorbic acid and a small amount of antimony.
Book
Applied Linear Statistical Models
TL;DR: Applied Linear Statistical Models 5e as discussed by the authors is the leading authoritative text and reference on statistical modeling, which includes brief introductory and review material, and then proceeds through regression and modeling for the first half, and through ANOVA and Experimental Design in the second half.