Mycorrhizae in Adenostoma fasciculatum Hook. & Arn.: a combination of unusual ecto- and endo-forms

Mycorrhiza ◽  
1999 ◽  
Vol 8 (4) ◽  
pp. 225-228 ◽  
Author(s):  
M. F. Allen ◽  
Louise M. Egerton-Warburton ◽  
Edith B. Allen ◽  
Ola Kårén
Keyword(s):  
Adenostoma Fasciculatum

Persistence of 2,4-D and 2,4,5-T in Chaparral Vegetation and Soil

Weed Science ◽  
1977 ◽  
Vol 25 (5) ◽  
pp. 423-425 ◽  
Author(s):  
S.R. Radosevich ◽  
W.L. Winterlin
Keyword(s):  
Acetic Acid ◽  
Soil Sample ◽  
Soil Surface ◽  
Winter Rainfall ◽  
Sample Zone ◽  
Herbicide Residues ◽  
Adenostoma Fasciculatum ◽  
Dichlorophenoxy Acetic Acid

The persistence of 2,4-D [(2,4-dichlorophenoxy) acetic acid] and 2,4,5-T [(2,4,5-trichlorophenoxy)acetic acid] was studied in the chaparral environment. Chamise (Adenostoma fasciculatumH. & A.), grass and forbs, soil surface litter, and soil were sampled for up to 360 days after herbicide (4.5 kg/ha) application. Over 50% of the 2,4-D and 2,4,5-T recovered was found on soil surface litter while 18 to 31% was found on vegetation. Much less herbicide (0.1 to 0.2%) was found in soil (0 to 5 cm) than in foliage or litter. No herbicide residues were found below the 0 to 5 cm soil sample zone. Herbicide residues on foliage and litter decreased rapidly (up to 93%) within 30 days after application but remained constant thereafter until winter rainfall began. Residues of both herbicides were evident in chamise foliage (0.01 to 0.02%), surface litter (0.01 to 0.03%), and soil (0.01%) up to 360 days after application.

scholarly journals Adenostoma fasciculatum, California Chamise: Chemistry and Use in Skin Conditions

2014 ◽  
Vol 1 (1) ◽  
pp. 25-31
Author(s):  
Alexis Bouttemy ◽  
Osvaldo Ruiter Faria Filho ◽  
James David Adams ◽  
Travis Williams
Keyword(s):  
Adenostoma Fasciculatum ◽  
Skin Conditions

Allelopathic constituents of the chaparral shrub Adenostoma fasciculatum

1971 ◽  
Vol 10 (12) ◽  
pp. 2925-2933 ◽  
Author(s):  
James K. McPherson ◽  
Chang-Hung Chou ◽  
Cornelius H. Muller
Keyword(s):  
Adenostoma Fasciculatum

Long-Term Effects on Vegetation of Herbicide Treatments in Chaparral

Weed Science ◽  
1985 ◽  
Vol 33 (3) ◽  
pp. 353-357
Author(s):  
Jodie S. Holt ◽  
Steven R. Radosevich ◽  
Walter L. Graves
Keyword(s):  
Acetic Acid ◽  
Canopy Cover ◽  
Field Studies ◽  
San Diego County ◽  
Long Term Effects ◽  
Adenostoma Fasciculatum ◽  
Herbicide Treatments ◽  
Herbicide Effects ◽  
Dichlorophenoxy Acetic Acid

Field studies were established in 1974 and 1975 at various locations in San Diego County, CA, to evaluate several herbicides for the control of chamise (Adenostoma fasciculatumH.&A.) and redshank chamise (Adenostoma sparsifoliumTorr.). Herbicide effects on vegetation were reevaluated in 1982. Plots originally treated with 2.2 or 4.5 kg ae/ha of glyphosate [N-(phosphonomethyl)glycine] had virtually no chamise regrowth 8 yr after treatment. The herbicides 2,4-D [(2,4-dichlorophenoxy)acetic acid], combinations of 2,4-D with 2,4,5-T [(2,4,5-trichlorophenoxy)acetic acid] or dichlorprop [2-(2,4-dichlorophenoxy) propionic acid], fosamine [ethyl hydrogen (aminocarbonyl)phosphonate], triclopyr {[(3,5,6-trichloro-2-pyridinyl)oxy] acetic acid}, tebuthiuron {N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N′-dimethylurea}, and picloram (4-amino-3,5,6-trichloropicolinic acid) had no long-term effects on chamise. Soil collected in 1982 from glyphosate-treated plots contained similar numbers of chamise seeds but fewer seeds of other species compared to untreated plots. Canopy cover of redshank chamise was similar in treated and untreated plots after 8 yr. These results document the effectiveness of glyphosate in killing the underground root-crown of chamise, which prevented sprouting, but not redshank chamise.

Adenostoma Fasciculatum, California Chamise, Chemistry and Use in Skin Conditions

2014 ◽  
Vol 20 (5) ◽  
pp. A35-A35
Author(s):  
James Adams ◽  
Alexis Bouttemy ◽  
Osvaldo Ruiter Faria Filho ◽  
Travis Williams
Keyword(s):  
Adenostoma Fasciculatum ◽  
Skin Conditions

scholarly journals Extended seed rain period of Adenostoma fasciculatum impacts diverse seed predators

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0250290
Author(s):  
Joanna M. Garaventa ◽  
V. Thomas Parker
Keyword(s):  
Elevated Temperatures ◽  
Germination Rate ◽  
Fire Frequency ◽  
Seed Banks ◽  
Seed Rain ◽  
Stand Age ◽  
Soil Seed Banks ◽  
Seed Predators ◽  
Adenostoma Fasciculatum ◽  
Plant Animal Interactions

Aims The principal chaparral species in California, Adenostoma fasciculatum, an evergreen, sclerophyllous shrub, is broadly distributed and provides habitat and food resources for a large and diverse animal community. The effects of climate change, including elevated temperatures, fire frequency and severity, along with increased urban encroachment, have placed pressure on chaparral habitats in California. Our goal is to investigate aspects of reproductive ecology as a measure of the potential resiliency of A. fasciculatum. We focus on seed rain (all seed falling into the seed traps regardless of origin) and seed banks in the context of plant-animal interactions and regeneration. Methods Stand recovery following disturbance is achieved through both resprouting and germination from established persistent soil seed banks. In this study we focus on seed ecology using a series of experiments to document the length and quantity of seed rain, seed predation, parsing the importance of the community of granivores, and evaluating the connection between stand age and germination rate from soil seed banks. Important findings Our research documented an 8-month seed rain duration with over 1 million seeds per m2, multiple seed predators including passerines (songbirds) and rodents, and points to the possibility of native ants playing a role in the seed dispersal process. This is important given the recent advancement of the invasive Argentine ant (Linepthema humile) into Californian chaparral. This research demonstrates a clear relationship between A. fasciculatum and both resident and migratory granivores in the chaparral. We documented that a 39-year-old stand had higher germination rates than those which were 16, 20, 41 and 71 years old and how seed banks play a major role in assuring resiliency following fire. These findings are important for wildland managers to assure the continued resiliency of A. fasciculatum.

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