Root Growth Capacity in Coniferous Forest Trees

Coniferous Root Exudate.

The literature on root exudate is replete with studies of factors influencing the quantity and cycle of its production. For the most part, this work has been done utilizing herbaceous species or vines, but citations are also available on some of the broad-leaved trees. Root exudate from conifers is rarely reported, but in the course of preparation of a thesis at the University of California it ...

Decelerating growth in tropical forest trees.

The impacts of global change on tropical forests remain poorly understood. We examined changes in tree growth rates over the past two decades for all species occurring in large (50-ha) forest dynamics plots in Panama and Malaysia. Stem growth rates declined significantly at both forests regardless of initial size or organizational level (species, community or stand). Decreasing growth rates wer...

Carbonyl compounds in boreal coniferous forest air

Carbonyl compounds in boreal coniferous forest air in Hyytiälä, Southern Finland H. Hellén, H. Hakola, A. Reissell , and T. M. Ruuskanen Finnish Meteorological Institute, Sahaajankatu 20 E, 00880 Helsinki, Finland University of Helsinki, Department of Physical Sciences, Finland University of Helsinki, Department of Chemistry, Finland Received: 16 April 2004 – Accepted: 11 May 2004 – Published: ...

First-year growth response of trees in an intact forest

Although elevated atmospheric CO2 has been shown to increase growth of tree seedlings and saplings, the response of intact forest ecosystems and established trees is unclear. We report results from the ®rst large-scale experimental system designed to study the effects of elevated CO2 on an intact forest with the full complement of species interactions and environmental stresses. During the ®rst...

Biodegradation Activities in Coniferous Forest Soils and Freshwater Sediments