Litter-Fall Patterns within a Floodplain Forest

1985 ◽  
Vol 114 (1) ◽  
pp. 98 ◽  
Author(s):  
Donald J. Shure ◽  
Marlin R. Gottschalk
Keyword(s):  
Floodplain Forest ◽  
Litter Fall

Litter fall of epiphytic macrolichens in two old Picea abies forests in Sweden

1985 ◽  
Vol 63 (5) ◽  
pp. 980-987 ◽  
Author(s):  
Per-Anders Esseen
Keyword(s):  
Standing Crop ◽  
Annual Variation ◽  
Length Distribution ◽  
Forest Stand ◽  
Epiphytic Lichens ◽  
Litter Fall ◽  
Alectoria Sarmentosa ◽  
Usnea Longissima ◽  
Tree Litter ◽  
Thallus Length

The seasonal and annual variation in the litter fall of epiphytic lichens and tree litter was studied over a period of 2 to 3 years at two forested hills in the eastern part of central Sweden. Litter fall was measured using traps and for one species, Usnea longissima, by collecting specimens present on the ground. Total litter fall amounted to 2.5 and 2.8 tons ha−1 year−1 of which lichens constituted 4.6 and 5.7% at the two sites. Lichen litter fall was highest during the period from late autumn to the beginning of summer. Both the lichens and the tree litter showed significant between-year differences. Usnea longissima had an annual turnover of 7.0 and 10.0% of the standing crop at the two sites. The thallus length distribution of U. longissima was positively skewed. It is concluded that dispersal of thallus fragments by wind evidently plays an important role for many of the filamentous lichens studied. It is suggested that U. longissima disperses over a much shorter distance than Alectoria sarmentosa and Bryoria spp. within a forest stand.

Comparison of traditional ground-based observations and digital remote sensing of phenological transitions in a floodplain forest

2020 ◽  
Vol 291 ◽  
pp. 108079 ◽  
Author(s):  
Ondřej Nezval ◽  
Jan Krejza ◽  
Jan Světlík ◽  
Ladislav Šigut ◽  
Petr Horáček
Keyword(s):  
Remote Sensing ◽  
Floodplain Forest

Mass and nutrient content of dead wood in a central Illinois floodplain forest

Wetlands ◽  
1996 ◽  
Vol 16 (4) ◽  
pp. 488-494 ◽  
Author(s):  
Juan I. Polit ◽  
Sandra Brown
Keyword(s):  
Dead Wood ◽  
Nutrient Content ◽  
Floodplain Forest ◽  
Central Illinois

WOOD CHARACTERISTICS OF AMAZON FOREST TYPES

IAWA Journal ◽  
2000 ◽  
Vol 21 (3) ◽  
pp. 277-292 ◽  
Author(s):  
D.W. Woodcock ◽  
G. Dos Santos ◽  
C. Reynel
Keyword(s):  
Specific Gravity ◽  
Vessel Diameter ◽  
Floodplain Forest ◽  
Small Samples ◽  
Vessel Element ◽  
Amazon Forest ◽  
Forest Types ◽  
Swamp Forest ◽  
Climate Controls ◽  
Pattern Of Variation

The Tambopata region of the southern Peruvian Amazon supports a high diversity of both woody plants and forest types. Woods collected from low riverside vegetation, floodplain forest, clay-soil forest on an upper terrace, sandy-soil forest, and swamp forest provide an opportunity to test for significant differences in quantitative anatomical characters among forest types. Vessel-element length in floodplain-forest trees is significantly greater than in the other forest types. Specific gravity is lower in the two early-successional associations (low riverine forest and mature floodplain forest). Vessel diameter and density do not show significant differences among forest types and may be responding to overall climate controls. These two characters, however, show a pattern of variation within a transect extending back from the river along a gradient of increasing substrate and forest age; in addition, sites characterized by frequent flooding or presence of standing water lack vessels in the wider-diameter classes. The six characters analyzed show distributions that are, with the exception of wood specific gravity, significantly nonnormally distributed, a consideration that may be important in representing characteristics of assemblages of taxa. The degree of variability seen in some of the quantitative characters shows the importance of either basing analysis on adequate sample sizes or identifying robust indicators that can be used with small samples.

Autumnal nutrient transfers by retranslocation, leaching, and litter fall in a chestnut oak forest in southern Illinois

1982 ◽  
Vol 12 (1) ◽  
pp. 40-51 ◽  
Author(s):  
Nancy L. Ostman ◽  
George T. Weaver
Keyword(s):  
Late Summer ◽  
Dry Weight ◽  
Litter Fall ◽  
Leaf Color ◽  
Southern Illinois ◽  
Foliar Concentrations ◽  
Important Means ◽  
Study Sites ◽  
Free Falling ◽  
Leaf Dry Weight

Retranslocation from leaves was investigated as a means of retaining nutrients in stands of Quercusprinus L. on two sites in southern Illinois, where wind rapidly moves litter downslope. Foliage samples were collected from late summer until leaf fall to describe the trends of leaf dry weight and nutrient concentration (N, K, P, Ca) changes. Free-falling rain and throughfall were collected to estimate foliar leaching. Foliar concentrations of N, K, and P decreased markedly during senescence while Ca concentrations increased. The pattern of concentration change was unique for each element, and the change in N concentration was closely correlated with change in leaf color. For the study sites as a whole, leaf dry weight decreased to 70% of the original value. Of 84.2 kg N/ha in green foliage, only 22.6% was returned to the site as litter. The canopy gained 0.3 kg N/ha (0.4%) from rainfall. The 78.5% N unaccounted for is attributed to retranslocation. Similarly, from 51.4 kg K/ha; 8.2, P; and 47.8, Ca in green foliage, 9.8, 1.3, and 3.3%, respectively, were removed by leaching; 27.4, 43.7, and 85.1% were returned to the site in litter. The remaining 63.0% K, 55.0% P, and 11.5% Ca unaccounted for is attributed to retranslocation. Retranslocation and leaching of nutrients was greater on the site of higher quality. But on both sites it appears that retranslocation is an important means of retaining and conserving N, K, and P countering the effect of annual litter removal.

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