Results 181 to 190 of about 13,650 (211)

The influence of macro‐litterfall and forest structure on litterfall damage to seedlings

Austral Ecology, 2004
Abstract  Microdisturbance to seedlings is important because it can differentially affect the mortality and recruitment of seedlings of forest tree species and thereby ultimately affect community composition. Microdisturbance due to litterfall has been shown to vary greatly in its influence on seedling survival among and within forests, and yet there ...
LEN N. GILLMAN, JOHN OGDEN, SHANE D. WRIGHT, KAREN L. STEWART, DWAYNE P. WALSH   +4 more
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Aboveground litterfall in Eurasian forests

Journal of Forestry Research, 2003
With a data set of Eurasian forest litter fall based on 471 stands, annual litterfall was estimated to be 6.53 Pg dm·a−1 (1 Pg=1015 g;dm, dry matter) in Eurasian forests, of which more than half occurred in tropical and subtropical forests, and a third in the boreal area.
Liu Chun-jiang, Hannu Ilvesniemi, Björn Berg, Werner Kutsch, Yang Yu-sheng, Ma Xiang-qing, Carl J. Westman   +6 more
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Assessment of Global Mercury Deposition through Litterfall

Environmental Science & Technology, 2016
There is a large uncertainty in the estimate of global dry deposition of atmospheric mercury (Hg). Hg deposition through litterfall represents an important input to terrestrial forest ecosystems via cumulative uptake of atmospheric Hg (most Hg(0)) to foliage.
Xun, Wang, Zhengduo, Bao, Che-Jen, Lin, Wei, Yuan, Xinbin, Feng   +4 more
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Litterfall mercury dry deposition in the eastern USA

Environmental Pollution, 2012
Mercury (Hg) in autumn litterfall from predominately deciduous forests was measured in 3 years of samples from 23 Mercury Deposition Network sites in 15 states across the eastern USA. Annual litterfall Hg dry deposition was significantly higher (median 12.3 micrograms per square meter (μg/m(2)), range 3.5-23.4 μg/m(2)) than annual Hg wet deposition ...
Martin R, Risch, John F, Dewild, David P, Krabbenhoft, Randall K, Kolka, Leiming, Zhang   +4 more
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Measuring Litterfall and Branchfall

2008
Trees capture CO2 from the air, return a large fraction to the atmosphere via autotrophic respiration, produce live tissues from assimilated carbon, and return expired tissues to the soil via the process of senescence. Methods described in this chapter deal with the measurements of the flow of above-ground solid carbon-based material to the forest ...
Pierre Bernier, Paul J. Hanson, Peter S. Curtis   +2 more
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Microsite heterogeneity in litterfall risk to seedlings

Austral Ecology, 2005
Abstract  Litterfall is an important cause of damage and mortality to seedlings in many forest ecosystems. This study is the first to investigate the contribution of variable risk of litterfall damage to microsite heterogeneity. Two hundred artificial seedlings were ‘planted’ in the ground at 2‐m intervals along transects in each of two New Zealand ...
LEN N. GILLMAN, JOHN OGDEN
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Fine litterfall in the Brazilian Atlantic Forest

Biotropica, 2017
AbstractLitterfall is an essential component of tropical forest productivity, transferring nutrients from the vegetation back to soils. Here, we summarize the data from 105 estimates of fine litterfall production from 45 sites in the Atlantic Forest domain, including two types of forests, evergreen and seasonal, and two successional stages, secondary ...
Luiz A. Martinelli, Sílvia R. M. Lins, Jéssica C. dos Santos‐Silva   +2 more
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Comparison of Litterfall Input to Streams

Journal of the North American Benthological Society, 1997
in Rhode Island. III. Distribution of macrophytic vegetation in a small drainage basin. Hydrobiologia 140:183-191. STEINMAN, A. D. 1992. Does an increase in irradiance influence periphyton in a heavily-grazed woodland stream? Oecologia 91:163-170. STEINMAN, A. D. 1996. Effects of grazers on freshwater benthic algae. Pages 341-373 in R. J. Stevenson, M.
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Seedling mortality from litterfall increases with decreasing latitude

Ecology, 2015
AbstractGlobal patterns in ecology need to be identified and interpreted if macroecological processes are to be fully understood. Facilitating effects on seedlings such as that of nurse plants and competitive effects such as allelopathy have been well recognized but the importance of plants acting as killers through physical damage by the litterfall ...
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Mixed models applied to the litterfall productivity

2014
Se propone una metodología para realizar un ajuste de un modelo lineal mixto incorporando una estructura de varianza y de correlación serial adecuada partiendo desde el modelo de regresión lineal clásico siguiendo la estrategia de Zuur et al. (2009). Se utilizan diferentes gráficos de diagnóstico de los residuales y pruebas de razón de verosimilitud a ...
Zea, José F., Murcia, Miguel A., Poveda, Fidel E.   +2 more
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