Water Table and Plant Species Relationships in Sierra Nevada Meadows

1991 ◽  
Vol 126 (1) ◽  
pp. 30 ◽  
Author(s):  
Barbara H. Allen-Diaz
Keyword(s):  
Plant Species ◽  
Sierra Nevada ◽  
Water Table ◽  
Species Relationships ◽  
Sierra Nevada Meadows

scholarly journals The distribution of woody species in relation to climate and fire in Yosemite National Park, California, USA

Fire Ecology ◽  
2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Jan W. van Wagtendonk ◽  
Peggy E. Moore ◽  
Julie L. Yee ◽  
James A. Lutz
Keyword(s):  
Plant Species ◽  
Sierra Nevada ◽  
Species Distribution ◽  
National Park ◽  
Woody Plant ◽  
Fire Regime ◽  
Yosemite National Park ◽  
Distribution Models ◽  
Ecological Zones ◽  
Woody Plant Species

Abstract Background The effects of climate on plant species ranges are well appreciated, but the effects of other processes, such as fire, on plant species distribution are less well understood. We used a dataset of 561 plots 0.1 ha in size located throughout Yosemite National Park, in the Sierra Nevada of California, USA, to determine the joint effects of fire and climate on woody plant species. We analyzed the effect of climate (annual actual evapotranspiration [AET], climatic water deficit [Deficit]) and fire characteristics (occurrence [BURN] for all plots, fire return interval departure [FRID] for unburned plots, and severity of the most severe fire [dNBR]) on the distribution of woody plant species. Results Of 43 species that were present on at least two plots, 38 species occurred on five or more plots. Of those 38 species, models for the distribution of 13 species (34%) were significantly improved by including the variable for fire occurrence (BURN). Models for the distribution of 10 species (26%) were significantly improved by including FRID, and two species (5%) were improved by including dNBR. Species for which distribution models were improved by inclusion of fire variables included some of the most areally extensive woody plants. Species and ecological zones were aligned along an AET-Deficit gradient from cool and moist to hot and dry conditions. Conclusions In fire-frequent ecosystems, such as those in most of western North America, species distribution models were improved by including variables related to fire. Models for changing species distributions would also be improved by considering potential changes to the fire regime.

An ecological look at saline wetlands

2004 ◽  
Vol 52 (1) ◽  
pp. 37-44
Author(s):  
M. Shokri ◽  
N. Safaian ◽  
M. Z. Ahmadi
Keyword(s):  
Plant Species ◽  
Water Table ◽  
Plant Communities ◽  
Sustainable Use ◽  
Point Of View ◽  
Ecological Niches ◽  
Salicornia Europaea ◽  
The Caspian Sea ◽  
Aeluropus Littoralis ◽  
Natural Equilibrium

Due to the occurrence of considerable areas of wetlands in the world, the wise, sustainable use of these lands is one of major importance for ecologists and agriculturists. As the presence of indicator species and plant communities can be a measure of the compatibility between plants and edaphic conditions in these regions, the ecological niches of plant species in part of the southern coastal areas of the Caspian Sea have been studied to show the correlation of each species with its own habitat. The plant communities were separated with Ward's cluster analysis. The correlation of these communities and plant species with environmental factors was investigated with the CCA method, using PC-Ordination-4 software. The results showed that the soil EC, water table, soil pH, SAR and ESP were 14-157 dS/m, 0-240 cm, 6.5-8.5, 13.4-84.8 and 2-55%, respectively. This range of values, in addition to creating ecological niches for species with different ecological roles, was also effective in the formation of plant communities. The analysis of vegetation and soil data with the CCA method showed the relationships between soil factors and vegetation. In spite of the dominance of the species Halocnemum strobilaceum in all the plant communities, the correlation of this species with plant species such as Aeluropus littoralis, Salicornia europaea, Aeluropus lagopoides,Salsola aurantia and Puccinella distans in relation to changes in EC, water table, pH, SAR and ESP, is important from the point of view of sustaining the physical environment and ecological function. The simplification of these ecosystems (by drainage, agriculture, etc.) may disturb the natural equilibrium. As these ecosystems are susceptible and changes in their use are costly from the ecological and economic points of view, the wise use of ecosystems in their natural forms (rangelands and habitats) is recommended to prevent the spread of salinity and to protect habitats and biodiversity.

scholarly journals Designing environmental DNA surveys in complex aquatic systems: Backpack sampling for rare amphibians in Sierra Nevada meadows

2020 ◽  
Vol 30 (10) ◽  
pp. 1975-1987 ◽  
Author(s):  
Karen L. Pope ◽  
Caren S. Goldberg ◽  
Nicolette L. Nelson ◽  
Adam K. Cummings ◽  
Travis Seaborn ◽  
...  
Keyword(s):  
Sierra Nevada ◽  
Environmental Dna ◽  
Aquatic Systems ◽  
Sierra Nevada Meadows

scholarly journals Erosion of refugia in the Sierra Nevada meadows network with climate change

Ecosphere ◽  
2017 ◽  
Vol 8 (4) ◽  
Author(s):  
Sean P. Maher ◽  
Toni Lyn Morelli ◽  
Michelle Hershey ◽  
Alan L. Flint ◽  
Lorraine E. Flint ◽  
...  
Keyword(s):  
Climate Change ◽  
Sierra Nevada ◽  
Sierra Nevada Meadows

scholarly journals Effect of Plant Species, Fertilizer Acidity/Basicity, and Fertilizer Concentration on pH of Soilless Root Substrate

HortScience ◽  
2016 ◽  
Vol 51 (12) ◽  
pp. 1596-1601
Author(s):  
Ka Yeon Jeong ◽  
Paul V. Nelson ◽  
Carl E. Niedziela ◽  
David A. Dickey
Keyword(s):  
Plant Species ◽  
Growth Conditions ◽  
Chemical Effect ◽  
Physiological Effects ◽  
Herbaceous Species ◽  
Species Relationships ◽  
Fertilizer Rate ◽  
The Third ◽  
Substrate Ph ◽  
Similar Growth

The objective of this study was to determine how plant species, fertilizer potential acidity/basicity rating (PABR), and fertilizer concentration affect root substrate pH. Three experiments were conducted. In the first experiment, 13 herbaceous species were grown in a root substrate of three sphagnum peatmoss: one perlite (v/v) with deionized water and a neutral fertilizer (NF) with a PABR of 0 for 78 days to determine species relationships to substrate pH. The decrease in substrate pH ranged from 0.14 to 2.45 units, depending on species. In the second experiment, four of the 13 species from the previous trial representing the range of pH suppression were grown under similar growth conditions as the first experiment for 70 days. Substrate pH was lowered in the range of 0.47 to 2.72 units. In the third experiment, three fertilizers with PABRs of 150 kg·t−1 CaCO3 equivalent alkalinity, 0 neutral, and 193 kg·t−1 CaCO3 equivalent acidity were applied in a factorial design at 100 and 200 mg·L−1 N at each irrigation to kalanchoe (the species with the greatest pH suppression from the previous experiments) for 56 days. When applied at the lower fertilizer rate (100 mg·L−1 N), the PABRs resulted in the final substrate pH levels of 4.68, 5.60, and 6.11 for the acidic fertilizer (AF), NF, and basic fertilizer (BF), respectively. At the high fertilizer rate (200 mg·L−1 N), substrate pH declined continuously to 3.97, 4.03, and 4.92 for the AF, NF, and BF, respectively. Expression of PABR depended on the balance between the abiotic (chemical) effect of the fertilizers vs. the biotic (physiological) effects of the fertilizers on microbes and plants. The PABR was best expressed when the fertilizer supply was just adequate or lower indicating a closer connection to the biotic effect.

Herbage Production on High Sierra Nevada Meadows

1967 ◽  
Vol 20 (4) ◽  
pp. 255 ◽  
Author(s):  
H. Reed Sanderson
Keyword(s):  
Sierra Nevada ◽  
Sierra Nevada Meadows

Plant Selection by Bumble Bees (Hymenoptera: Apidae) in Montane Riparian Habitat of California

2020 ◽  
Vol 49 (1) ◽  
pp. 220-229
Author(s):  
Jerry S Cole ◽  
Rodney B Siegel ◽  
Helen L Loffland ◽  
Erin A Elsey ◽  
Morgan W Tingley ◽  
...  
Keyword(s):  
Plant Species ◽  
Sierra Nevada ◽  
Abundant Species ◽  
Bumble Bees ◽  
Bumble Bee ◽  
Individual Plant ◽  
Plant Selection ◽  
Plant Resources ◽  
Riparian Corridors ◽  
Blooming Phenology

Abstract Many bumble bee species (Bombus Latreille) have declined dramatically across North America and the globe, highlighting the need for a greater understanding of the habitat required to sustain or recover populations. Determining bumble bee species’ plant selection is important for retaining and promoting high-quality plant resources that will help populations persist. We used nonlethal methods to sample 413 plots within riparian corridors and meadows in the Sierra Nevada of California for bumble bees during two summers following extremely low and normal precipitation years, respectively. We assessed the five most abundant bumble bee species’ plant selection by comparing their floral use to availability. Additionally, we described the shift in plant selection between years for the most abundant species, Bombus vosnesenskii Radoszkowski. Bumble bee species richness was constant between years (13 species) but abundance nearly tripled from 2015 to 2016 (from 1243 to 3612 captures), driven largely by a dramatic increase in B. vosnesenskii. We captured bumble bees on 104 plant species or complexes, but only 14 were significantly selected by at least one bumble bee species. Each of the five most frequently captured bumble bee species selected at least one unique plant species. Plant blooming phenology, relative availability of flowers of individual plant species, and plant selection by B. vosnesenkii remained fairly constant between the two study years, suggesting that maintaining, seeding, or planting with these ‘bumble bee plants’ may benefit these five bumble bee species.

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