Results 1 to 10 of about 53,449 (135)

Soil, competition, and niche shifts shape the floral mosaic of an annual plant diversity hotspot. [PDF]

Am J Bot
Abstract Premise Plant species with affinity for harsh substrates often have well‐defined edaphic (soil) niches and are ideal for exploring questions of community assembly. Vertic clay soils are chemically and physically challenging to plant establishment and productivity, and annual plant communities associated with these soils of the San Joaquin ...
Fryer ER, O'Dell R, Grossenbacher DL, Shon A, McKinnon S, Rajakaruna N.   +5 more
europepmc   +2 more sources

Effects of invasive plants on fire regimes and postfire vegetation diversity in an arid ecosystem [PDF]

Ecology and Evolution, 2019
We assessed the impacts of co‐occurring invasive plant species on fire regimes and postfire native communities in the Mojave Desert, western USA. We analyzed the distribution and co‐occurrence patterns of three invasive annual grasses (Bromus rubens ...
Emma C. Underwood, Robert C. Klinger, Matthew L. Brooks   +2 more
doaj   +2 more sources

Controlled temperature contrasts of three native and one highly invasive annual plant species in California [PDF]

PeerJ
Plant responses to changes in temperature can be a key factor in predicting the presence and managing invasive plant species while conserving resident native plant species in dryland ecosystems.
Mario Zuliani, Stephanie Haas-Desmarais, Laura Brussa, Jessica Cunsolo, Angela Zuliani, Christopher J. Lortie   +5 more
doaj   +3 more sources

Shrub-facilitated invasion accelerates desertification. [PDF]

Ecol Appl
Abstract In theory, increasing sensitivity of primary productivity to precipitation variability is a biophysical symptom of dryland degradation, or “desertification,” but empirical tests of this in the context of biological invasions are scant. To test the potential for exotic grass invasion to exacerbate biophysical symptoms of desertification, we ...
Lucero JE, Lortie CJ, Filazzola A, Callaway RM.   +3 more
europepmc   +2 more sources

Wildfire-Induced Losses of Soil Particulate and Mineral-Associated Organic Carbon Persist for Over 4 Years in a Chaparral Ecosystem. [PDF]

Glob Chang Biol
Wildfires can lower soil carbon (C) stocks directly through combustion, but also indirectly during post‐fire recovery if microbial respiration outpaces photosynthetic C inputs. To assess controls over post‐fire soil C stocks, we measured particulate organic carbon (POC), mineral‐associated organic carbon (MAOC), and microbial and plant communities for ...
Krichels AH, Stephens EZ, Reid C, Barriga MFP, Ordoñez ME, McLaren JR, Kargul M, Larios L, Glassman SI, Homyak PM.   +9 more
europepmc   +2 more sources

Lack of Host Specialization on Winter Annual Grasses in the Fungal Seed Bank Pathogen Pyrenophora semeniperda. [PDF]

PLoS ONE, 2016
Generalist plant pathogens may have wide host ranges, but many exhibit varying degrees of host specialization, with multiple pathogen races that have narrower host ranges. These races are often genetically distinct, with each race causing highest disease
Julie Beckstead, Susan E Meyer, Toby S Ishizuka, Kelsey M McEvoy, Craig E Coleman   +4 more
doaj   +2 more sources

Plant networks are more connected by invasive brome and native shrub facilitation in Central California drylands [PDF]

Scientific Reports
Dominant vegetation in many ecosystems is an integral component of structure and habitat. In many drylands, native shrubs function as foundation species that benefit other plants and animals.
C. J. Lortie, Charlotte Brown, Stephanie Haas-Desmarais, Jacob Lucero, Ragan Callaway, Jenna Braun, Alessandro Filazzola   +6 more
doaj   +2 more sources

Which, when, and where traits matter: functional trait-mediated species associations shift with microenvironmental and climatic variation. [PDF]

New Phytol
Community‐level fitted relationship between spatial association Lij and trait dissimilarity (tDij) at the fine spatial scale (r = 40 mm; where r represents the radius around individuals of the focal species). Summary Predicting coexistence in species‐rich plant communities requires understanding the role of functional traits in species interactions and
Antorán E, Calatayud J, Peralta AL, Escudero A, Sánchez AM, Luzuriaga AL, de la Cruz M.   +6 more
europepmc   +2 more sources

Phenology forecasting models for detection and management of invasive annual grasses

Ecosphere
Non‐native annual grasses can dramatically alter fire frequency and reduce forage quality and biodiversity in the ecosystems they invade. Effective management techniques are needed to reduce these undesirable invasive species and maintain ecosystem ...
J. S. Prevéy, I. S. Pearse, D. M. Blumenthal, A. J. Howell, J. A. Kray, S. C. Reed, M. B. Stephenson, C. S. Jarnevich   +7 more
doaj   +2 more sources

What is Bromus rubens subsp. kunkelii?

Mediterranean Botany
Bromus rubens subsp. kunkelii (H. Scholz) H. Scholz is the accepted name of a possible taxon omitted in the treatment of the genus Bromus in Flora iberica.
Carlos Romero Zarco
exaly   +3 more sources