Pollen, DNA and Vegetation records from surface sediments of lacustrine lakes along a forest tundra - tundra transect at the Taymyr peninsula, northern Siberia

Reliable information of past vegetation changes are important to project future changes, especially for areas undergoing rapid transitioning such as the boreal treeline. The application of detailed sedDNA records has the potential to enhance our understanding of vegetation changes gained mainly from pollen studies of lake sediments. This study investigates sedDNA and pollen records from 31 lakes along a gradient of increasing larch forest cover in northern Siberia (Taymyr Peninsula) and compares them with vegetation field surveys within the lake's catchment. With respect to vegetation richness, sedDNA recorded 114 taxa, about half of them to species level, while pollen analyses identified 43 pollen taxa. Both approaches exceed the 31 taxa revealed by vegetation field surveys of 400 m**2 plots. From north to south, Larix percentages increase, as is consistently recorded by all three methods. Furthermore, tundra sites are separated from forested sites in the plots of the principal component analyses. Comparison of ordination results by Procrustes and Protest analyses yields a significant fit among all compared pairs of records. Despite the overall comparability of sedDNA and pollen analyses certain idiosyncrasies in the compositional signal are observed, such as high percentages of Alnus and Betula in all pollen spectra and high percentages of Salix in all sedDNA spectra. In conclusion, our results from the treeline show that sedDNA analyses perform better than pollen in recording site-specific richness (i.e. presence/absence of certain vegetation taxa in the direct vicinity of the lake) and perform as good as pollen in tracing regional vegetation composition.

Forest products research guide in fundamental and applied research.

"The first edition was issued in 1943 under the title 'Bibliography of fundamental and applied research in forest products'."

A laboratory manual and guide to forest insects, to be used in conjunction with Forest insects, by Doane, Van Dyke, Chamberlin, and Burke

Reproduced from type-written copy.

Riparian community type classification of Utah and southeastern Idaho /

"R4-Ecol-85-01."

Riparian community type classification for Humboldt and Toiyabe National Forests, Nevada and eastern California /

"R4-Ecol-95-01."

Planting plan for portion of estate of Mr. J. O. Armour, Lake Forest, Illinois

Ink on linen. Indicates location, type and amount of vegetation to be planted. Signed. 96 cm. x 56 cm. Scale: 1"=20' [from photographic copy by Lance Burgharrdt]

Topographical survey for grounds of Mr. O.E. Babcock; Lake Forest, Illinois

Red and black ink on linen. Topo lines, elevations (location, type of trees). Signed. 106 cm. x 32 cm. Scale: 1"=30' [from photographic copy by Lance Burgharrdt]

Planting sketch. Estate of O.C. Doering Esquire; River Forest, Illinois

Ink on linen. Indicates location, type, amount of plantings, walkways, pool, council ring, tennis court, etc. Signature below title partially erased. 65 cm. x 89 cm. Scale: 1"=20' [from photographic copy by Lance Burgharrdt]

Planting plan. Estate of F. L. Hesler. Lake Forest, Illinois.

Red, black ink on linen; location, type of plantings; signed. 57 x 36 cm. Scale: 1"=20' [from photographic copy by Lance Burgharrdt]

Planting plan for a portion of the estate of Mr. W. V. Kelley. Lake Forest, Illinois.

Ink on linen; location, type, amount of plantings in area of lake; notes; signed. 91 x 79 cm. Scale: 1"=40' [from photographic copy by Lance Burgharrdt]

Planting plan for vegetable garden. Estate of Mrs. Darius Miller, Lake Forest Illinois

Ink on linen; location, type of plantings; signed. 116x43 cm. Scale: 1"=10' [from photographic copy by Lance Burgharrdt]

General plan for Mrs. Darius Miller. Lake Forest, Illinois

Ink on linen; location, type of plantings; gardens, pond, footpaths; notes; signed. 126x67 cm. Scale: 1"=30' [from photographic copy by Lance Burgharrdt]

Planting plan. Estate of Mr. E. S. Moore. Formal garden. Lake Forest, Illinois

Ink on linen; location, type, amount of plantings; trellises, seats; residence by Arthur Heun; signed. 97x68 cm. Scale: 1"=10' [from photographic copy by Lance Burgharrdt]

Estate of Mr. E. S. Moore... Planting plan. Lake Forest, Illinois

Ink on linen; location, type, amount of plantings for entire estate; residence by A. Heun; signed. 124x102 cm. Scale: 1"=30' [from photographic copy by Lance Burgharrdt]

Planting plan for C. D. Norton. Lake Forest, Illinois

Ink on linen; location, type of plantings; gardens, tennis court; list of plantings; signed. 36x44 cm. Scale: 1"=20' [from photographic copy by Lance Burgharrdt]