scholarly journals Saltcedar (Tamarix spp.) and Russian Olive (Elaeagnus angustifolia) in the Western United States-A Report on the State of the Science

Fact Sheet ◽  
2010 ◽  
Author(s):  
Patrick Shafroth
Keyword(s):  
United States ◽  
The State ◽  
Western United States ◽  
Elaeagnus Angustifolia ◽  
Russian Olive ◽  
Tamarix Spp ◽  
State Of The Science

Russian-olive (Elaeagnus angustifolia) genetic diversity in the western United States and implications for biological control

2019 ◽  
Vol 12 (02) ◽  
pp. 89-96 ◽  
Author(s):  
John F. Gaskin ◽  
Jose A. Andrés ◽  
Steven M. Bogdanowicz ◽  
Kimberly R. Guilbault ◽  
Ruth A. Hufbauer ◽  
...  
Keyword(s):  
United States ◽  
Genetic Diversity ◽  
Biological Control ◽  
Biological Control Agent ◽  
Isolation By Distance ◽  
Western United States ◽  
Elaeagnus Angustifolia ◽  
Genetic Cluster ◽  
Russian Olive ◽  
Geographic Population

AbstractInvasions can be genetically diverse, and that diversity may have implications for invasion management in terms of resistance or tolerance to control methods. We analyzed the population genetics of Russian-olive (Elaeagnus angustifoliaL.), an ecologically important and common invasive tree found in many western U.S. riparian areas. We found three cpDNA haplotypes and, using 11 microsatellite loci, identified three genetic clusters in the 460 plants from 46 populations in the western United States. We found high levels of polymorphism in the microsatellites (5 to 15 alleles per locus; 106 alleles total). Our native-range sampling was limited, and we did not find a genetic match for the most common cpDNA invasive haplotype or a strong confirmation of origin for the most common microsatellite genetic cluster. We did not find geographic population structure (isolation by distance) across the U.S. invasion, but we did identify invasive populations that had the most diversity, and we suggest these as choices for initial biological control–release monitoring. Accessions from each genetic cluster, which coarsely represent the range of genetic diversity found in the invasion, are now included in potential classical biological control agent efficacy testing.

Naturalization of Russian-Olive in the Western United States

1986 ◽  
Vol 1 (3) ◽  
pp. 65-69 ◽  
Author(s):  
Thomas E. Olson ◽  
Fritz L. Knopf
Keyword(s):  
United States ◽  
Agricultural Practices ◽  
The United States ◽  
Western United States ◽  
Riparian Zones ◽  
Elaeagnus Angustifolia ◽  
Russian Olive ◽  
Western State ◽  
Riparian Trees ◽  
Exotic Tree

Abstract Since its introduction into the United States, Russian-olive (Elaeagnus angustifolia) has escaped cultivation at many locations. This exotic tree is now present in every western state, especially within riparian zones. The species has high value for wildlife, but can interfere with agricultural practices and has the potential to displace native riparian trees. West. J. Appl. For. 1:65-69, July 1986.

Distribution and Abundance of Saltcedar and Russian Olive in the Western United States

2011 ◽  
Vol 30 (6) ◽  
pp. 508-523 ◽  
Author(s):  
Pamela L. Nagler ◽  
Edward P. Glenn ◽  
Catherine S. Jarnevich ◽  
Patrick B. Shafroth
Keyword(s):  
United States ◽  
Western United States ◽  
Russian Olive

scholarly journals Scaling net ecosystem production and net biome production over a heterogeneous region in the western United States

2007 ◽  
Vol 4 (2) ◽  
pp. 1093-1135 ◽  
Author(s):  
D. P. Turner ◽  
W. D. Ritts ◽  
B. E. Law ◽  
W. B. Cohen ◽  
Z. Yang ◽  
...  
Keyword(s):  
United States ◽  
Remote Sensing ◽  
Interannual Variation ◽  
Carbon Stocks ◽  
Net Ecosystem Production ◽  
The State ◽  
Western United States ◽  
Fire Emissions ◽  
Ecosystem Production ◽  
Heterogeneous Region

Abstract. Bottom-up scaling of net ecosystem production (NEP) and net biome production (NBP) was used to generate a carbon budget for a large heterogeneous region (the state of Oregon, 2.5×105 km2) in the western United States. Landsat resolution (30 m) remote sensing provided the basis for mapping land cover and disturbance history, thus allowing us to account for all major fire and logging events over the last 30 years. For NEP, a 23-year record (1980–2002) of distributed meteorology (1 km resolution) at the daily time step was used to drive a process-based carbon cycle model (Biome-BGC). For NBP, fire emissions were computed from remote sensing based estimates of area burned and our mapped biomass estimates. Our estimates for the contribution of logging and crop harvest removals to NBP were from the model simulations and were checked against public records of forest and crop harvesting. The predominately forested ecoregions within our study region had the highest NEP sinks, with ecoregion averages up to 197 gC m−2 yr−1. Agricultural ecoregions were also NEP sinks, reflecting the imbalance of NPP and decomposition of crop residues. For the period 1996–2000, mean NEP for the study area was 17.0 TgC yr−1, with strong interannual variation (SD of 10.6). The sum of forest harvest removals, crop removals, and direct fire emissions amounted to 63% of NEP, leaving a mean NBP of 6.1 TgC yr−1. Carbon sequestration was predominantly on public forestland, where the harvest rate has fallen dramatically in the recent years. Comparison of simulation results with estimates of carbon stocks, and changes in carbon stocks, based on forest inventory data showed generally good agreement. The carbon sequestered as NBP, plus accumulation of forest products in slow turnover pools, offset 51% of the annual emissions of fossil fuel CO2 for the state. State-level NBP dropped below zero in 2002 because of the combination of a dry climate year and a large (200 000 ha) fire. These results highlight the strong influence of land management and interannual variation in climate on the terrestrial carbon flux in the temperate zone.

scholarly journals Scaling net ecosystem production and net biome production over a heterogeneous region in the western United States

2007 ◽  
Vol 4 (4) ◽  
pp. 597-612 ◽  
Author(s):  
D. P. Turner ◽  
W. D. Ritts ◽  
B. E. Law ◽  
W. B. Cohen ◽  
Z. Yang ◽  
...  
Keyword(s):  
United States ◽  
Remote Sensing ◽  
Interannual Variation ◽  
Carbon Stocks ◽  
Net Ecosystem Production ◽  
The State ◽  
Western United States ◽  
Fire Emissions ◽  
Ecosystem Production ◽  
Heterogeneous Region

Abstract. Bottom-up scaling of net ecosystem production (NEP) and net biome production (NBP) was used to generate a carbon budget for a large heterogeneous region (the state of Oregon, 2.5×105 km2) in the western United States. Landsat resolution (30 m) remote sensing provided the basis for mapping land cover and disturbance history, thus allowing us to account for all major fire and logging events over the last 30 years. For NEP, a 23-year record (1980–2002) of distributed meteorology (1 km resolution) at the daily time step was used to drive a process-based carbon cycle model (Biome-BGC). For NBP, fire emissions were computed from remote sensing based estimates of area burned and our mapped biomass estimates. Our estimates for the contribution of logging and crop harvest removals to NBP were from the model simulations and were checked against public records of forest and crop harvesting. The predominately forested ecoregions within our study region had the highest NEP sinks, with ecoregion averages up to 197 gC m−2 yr−1. Agricultural ecoregions were also NEP sinks, reflecting the imbalance of NPP and decomposition of crop residues. For the period 1996–2000, mean NEP for the study area was 17.0 TgC yr−1, with strong interannual variation (SD of 10.6). The sum of forest harvest removals, crop removals, and direct fire emissions amounted to 63% of NEP, leaving a mean NBP of 6.1 TgC yr−1. Carbon sequestration was predominantly on public forestland, where the harvest rate has fallen dramatically in the recent years. Comparison of simulation results with estimates of carbon stocks, and changes in carbon stocks, based on forest inventory data showed generally good agreement. The carbon sequestered as NBP, plus accumulation of forest products in slow turnover pools, offset 51% of the annual emissions of fossil fuel CO2 for the state. State-level NBP dropped below zero in 2002 because of the combination of a dry climate year and a large (200 000 ha) fire. These results highlight the strong influence of land management and interannual variation in climate on the terrestrial carbon flux in the temperate zone.

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