Response of young ponderosa pines, shrubs, and grasses to two release treatments

McDonald, Philip M.; Everest, Glen A.

doi:10.2737/psw-rn-419

Cited by 8 publications

(12 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Private and public land managers often target montane chaparral for suppression or removal to aid with forest regeneration and to reduce fire risk (McGinnis et al ). Chaparral that develops in forest openings created by fire or timber harvest is often selectively treated to reduce competition with naturally occurring or planted conifer seedlings (McDonald and Everest , McDonald et al ) in areas where reforestation is a management priority. Treatment methods to reduce or remove unwanted vegetation include prescribed fire, broadcast spraying of herbicides to kill all herbaceous and shrub cover within conifer plantations (or in preparation for conifer planting), targeted herbicide application to shrub species (generally manzanita [ Arctostaphylos spp.…”

mentioning

confidence: 99%

Bumble bee use of post‐fire chaparral in the central Sierra Nevada

et al. 2017

View full text Add to dashboard Cite

Bumble bees (Bombus spp.) are declining across many regions in the Northern Hemisphere, leading to a need for management actions that will protect and enhance their habitats. In the Sierra Nevada of California, USA, montane chaparral is prevalent across the landscape, particularly after forest fires, and may provide important floral resources for pollinators. However post‐fire montane chaparral is often targeted for removal during reforestation efforts, to reduce competition with young trees. In 2015 and 2016, we conducted non‐lethal bumble bee surveys within 2 areas in the Sierra Nevada that burned in forest fires in 2004. Our goals were to describe bumble bee abundance and species richness in a post‐fire landscape, to compare results from chaparral‐dominated upland vegetation with results from interspersed patches of riparian vegetation, and to identify characteristics of individual chaparral stands that might make some stands more valuable to bumble bees than others. We captured 2,494 bumble bees of 12 species, and used Bayesian hierarchical modeling to determine that bumble bee abundance was substantially greater in riparian plots (modeled capture rate truex¯ = 1.10 ± 0.31 [SD] bees/survey in 2015, and 2.96 ± 0.83 bees/survey in 2016) than in upland plots (truex¯ = 0.47 ± 0.07 bees/survey in 2015, and 1.27 ± 0.18 bees/survey in 2016), which comprised a mix of chaparral shrubs and associated herbaceous plants. Modeled species richness was also greater in riparian plots, with an average mean richness of 4.1 ± 1.8 bumble bee species in riparian plots versus 2.3 ± 1.3 species in upland plots across the 2 years of the study. Within upland and riparian areas, plots dominated by herbaceous vegetation had greater abundance and species richness. One chaparral shrub species, bearclover (Chamaebatia foliolosa), was foraged on preferentially over all other shrub species and over all but 1 forb taxon, and was associated with increased occupancy probability in the Vosnesensky bumble bee (Bombus vosnesenskii), the most abundant bumble bee species on our study plots. A complex of closely related herbaceous species in the genus Phacelia, commonly associated with upland chaparral in our study area, was the plant taxon most frequently used by bumble bees, and appeared to be particularly important during mid‐summer after bearclover flowers became scarce. Our findings suggest that post‐fire chaparral communities are generally less intensively used by bumble bees than nearby riparian vegetation but may nevertheless provide important habitat. When chaparral removal is part of post‐fire forest regeneration strategies, bumble bees will likely benefit from retention of a mosaic of upland habitat patches dominated by herbaceous vegetation and, in our study area, bearclover, which may provide foraging resources throughout the life cycle of local bumble bee colonies. Because habitat characteristics affected the occupancy of individual bumble bee species differently, managers should consider foraging preferences of target bumble ...

show abstract

mentioning

confidence: 99%

Bumble bee use of post‐fire chaparral in the central Sierra Nevada

et al. 2017

View full text Add to dashboard Cite

show abstract

“…From the rhizome transect study in central California , bearclover rhizomes elongated for 2 years after disturbance, developed very little the third year, and then occupied new territory from deep underground structures the fourth year. From the study in Eldorado County with small mulches (McDonald and Everest 1996), the poor growth of the ponderosa pine seedlings was attributed to the capture of soil moisture by roots and rhizomes located deep in the soil. Connection to rhizomes outside the mulches also was likely.…”

Section: Discussionmentioning

confidence: 99%

“…and death camas (Zigadenus exaltatus Eastw.) grow well in bearclover stands apparently because of the ability to grow tall early in the season (McDonald and Everest 1996).…”

Section: Plant Diversitymentioning

confidence: 99%

“…These materials also broke down rapidly and were subject to tearing by sharp stems, cattle, and deer. Another mulching study took place in Eldorado County in 1991 on land that was occupied by bearclover and scattered ponderosa pines (McDonald and Everest 1996) and then logged and broadcast-burned. Mulches were made of woven black polypropylene, 5 feet square ( fig.…”

Section: Mulchingmentioning

confidence: 99%

See 1 more Smart Citation

Ecology and manipulation of bearclover (Chamaebatia foliolosa) in northern and central California: The status of our knowledge.

McDonald¹,

Fiddler²,

Potter³

2004

Self Cite

View full text Add to dashboard Cite

Long the bane of foresters, but of interest to ecologists, bearclover inhabits thousands of acres of forest land in northern and central California. Little quantification of its recovery after disturbance is available because knowledge on the morphology of flowers, seeds, and rhizomes is fragmented, and physiological processes, especially plant moisture and photosynthetic relationships, are unknown. Consequently, most of the dozens of treatments that have been tried to manipulate bearclover have failed. Bearclover's rhizomes efficiently gather soil moisture and together with high rates of photosynthesis promote rapid growth and site capture. Using all available water limits species richness, and the plant community in established stands is limited to a few hardy species. Above-ground stem density of bearclover also is high. Because of nearly total site capture both above and below ground, successful long-term manipulation of bearclover is limited. The most effective treatments are those that kill bearclover rhizomes, and herbicides such as Roundup and Velpar are effective. In local environments, treatments such as the winged subsoiler and perhaps repeated fire at the time of flowering may prove to be effective. However, no treatment completely eliminates bearclover, and it persists as part of the plant community.Retrieval Terms: bearclover, morphology, plant community, species development, vegetation management

show abstract

“…The woven construction is meant to allow water infiltration and gas exchange but still slow evaporation and weed penetration. Although published studies have found little improvement in seedling survival or growth using woven polypropylene (McDonald et al, 1994;McDonald and Everest, 1996;Windell and Haywood, 1996), many general field observations in the central Great Plains indicate seedling performance is improved (Wright, 1991). Tests conducted in Wyoming (Perko and Arnold, unpublished data) found higher soil moisture in the summer and fall under woven polypropylene.…”

Section: Introductionmentioning

confidence: 96%

Assessment of Microenvironmental Conditions Related to the Use of Synthetic Sheet Mulches for Protecting Newly Planted Trees in Semi-Arid Environments

Stepanek¹,

Brandle²,

Harrell³

2002

Journal of Sustainable Agriculture

View full text Add to dashboard Cite

Microenvironmental conditions created by six weed control methods and the resulting survival and height growth of two species of windbreak trees were measured in three separate plantings in Nebraska. The treatments included three synthetic sheet mulches commonly used in tree plantings. Climagro, a black polyethylene mulch, and Sunbelt, a black woven polypropylene mulch, improved the growth of green ash (Fraxinus pennsylvanica Marsh.) in two of the three plantings. Survival of green ash and survival and growth of Scotch pine (Pinus sylvestris L.) were not significantly different among the treatments. Positive correlations were found between August soil moisture and ash height growth. No relationship was found between soil temperature and ash growth, although significant differences in soil temperature among treatments were detected. Weed control treatment did not affect air tem-

show abstract

Response of young ponderosa pines, shrubs, and grasses to two release treatments

Cited by 8 publications

References 2 publications

Bumble bee use of post‐fire chaparral in the central Sierra Nevada

Bumble bee use of post‐fire chaparral in the central Sierra Nevada

Ecology and manipulation of bearclover (Chamaebatia foliolosa) in northern and central California: The status of our knowledge.

Assessment of Microenvironmental Conditions Related to the Use of Synthetic Sheet Mulches for Protecting Newly Planted Trees in Semi-Arid Environments

Contact Info

Product

Resources

About