scholarly journals Fossil pollen and spores as a tool for reconstructing ancient solar-ultraviolet irradiance received by plants: an assessment of prospects and challenges using proxy-system modelling

2019 ◽  
Vol 18 (2) ◽  
pp. 275-294 ◽  
Author(s):  
Alistair W. R. Seddon ◽  
Daniela Festi ◽  
T. Matthew Robson ◽  
Boris Zimmermann
Keyword(s):  
Systematic Evaluation ◽  
Fossil Pollen ◽  
System Modelling ◽  
Pollen And Spores ◽  
Ultraviolet Irradiance ◽  
Solar Ultraviolet

A systematic evaluation of the uncertainties limiting the application of UV-B-absorbing compounds in pollen and spores to reconstruct UV-B irradiance.

Solar ultraviolet irradiance observed from southern Argentina: September 1990 to March 1991

1993 ◽  
Vol 98 (D5) ◽  
pp. 8891-8897 ◽  
Author(s):  
J. E. Frederick ◽  
P. F. Soulen ◽  
S. B. Diaz ◽  
I. Smolskaia ◽  
C. R. Booth ◽  
...  
Keyword(s):  
Ultraviolet Irradiance ◽  
Solar Ultraviolet

A Late Holocene Paleoecological Record from Torrey Pines State Reserve, California

2000 ◽  
Vol 53 (3) ◽  
pp. 341-351 ◽  
Author(s):  
Kenneth L. Cole ◽  
Eugene Wahl
Keyword(s):  
Late Holocene ◽  
Climate Changes ◽  
Regional Climate ◽  
Sediment Chemistry ◽  
Fossil Pollen ◽  
Plant Type ◽  
The North ◽  
Low Genetic Diversity ◽  
Core Site ◽  
Pollen And Spores

AbstractPaleoenvironments of the Torrey Pines State Reserve were reconstructed from a 3600-yr core from Los Peñasquitos Lagoon using fossil pollen, spores, charcoal, chemical stratigraphy, particle size, and magnetic susceptibility. Late Holocene sediments were radiocarbon dated, while the historical sediments were dated using sediment chemistry, fossil pollen, and historical records. At 3600 yr B.P., the estuary was a brackish-water lagoon. By 2800 yr B.P., Poaceae (grass) pollen increased to high levels, suggesting that the rising level of the core site led to its colonization by Spartina foliosa (cord-grass), the lowest-elevation plant type within regional estuaries. An increase in pollen and spores of moisture-dependent species suggests a climate with more available moisture after 2600 yr B.P. This change is similar to that found 280 km to the north at 3250 yr B.P., implying that regional climate changes were time-transgressive from north to south. Increased postsettlement sediment input resulted from nineteenth-century land disturbances caused by grazing and fire. Sedimentation rates increased further in the twentieth century due to closure of the estuarine mouth. The endemic Pinus torreyana (Torrey pine) was present at the site throughout this 3600-yr interval but was less numerous prior to 2100 yr B.P. This history may have contributed to the low genetic diversity of this species.

Balloon observations of solar ultraviolet irradiance at solar minimum

1982 ◽  
Vol 30 (1) ◽  
pp. 67-71 ◽  
Author(s):  
Paul C. Simon ◽  
Roger Pastiels ◽  
Dennis Nevejans
Keyword(s):  
Solar Minimum ◽  
Ultraviolet Irradiance ◽  
Solar Ultraviolet

Solar ultraviolet irradiance at Tierra Del Fuego: Comparison of measurements and calculations over a full annual cycle

1996 ◽  
Vol 23 (4) ◽  
pp. 355-358 ◽  
Author(s):  
Susana B. Diaz ◽  
John E. Frederick ◽  
Timothy Lucas ◽  
C. Rocky Booth ◽  
Irina Smolskaia
Keyword(s):  
Annual Cycle ◽  
Tierra Del Fuego ◽  
Ultraviolet Irradiance ◽  
Solar Ultraviolet
Sign in / Sign up

Export Citation Format

Share Document