At the lower parts of the forest belt at Mt. Kilimanjaro, selective logging has led to a mosaic of mature forest, old secondary forests ( approximately 60 years), and old clearings ( approximately 10 years) covered by shrub vegetation. These variations in the vegetation are reflected by differences in nutrient leaching from the canopy and in both amount and quality of litter reaching the ground...

The Persian oak, Quercus brantii, trees in the Zagros region of Western Iran have been in decline since 2000. The decline is assumed to be highly connected with changes in meteorological parameters. Our objectives were to quantify the long-term trends in meteorological parameters and reference evapotranspiration (ET0) in the Zagros region and estimate ecohydrological parameters highly affected ...

The interception of precipitation by plant canopies can alter the amount and spatial distribution water inputs to ecosystems. We asked whether canopy could locally augment shrubs their crowns funneling (freshwater) as stemflow bases, in a wetland where relict overstory trees are dying persisting only grow on small hummocks that sit above mesohaline floodwaters. Precipitation, throughfall, were ...

Throughfall makes up the major portion of understory rainfall, and thereby plays a vital role in regulating hydrological biogeochemical processes forest ecosystems. The aim this study was to explore alterations throughfall associated chemical composition (Ca2+, Na2+, K+, Mg2+, H+, SO42−, NO3−, Cl−, F−) under Quercus acutissima Carruth. Broussonetia papyrifera (L.) L’Her. ex Vent. trees, relatio...

Deuterium-labeled water was used to study the effect of the Tapajós Throughfall Exclusion Experiment (TTEE) on soil moisture movement and on depth of water uptake by trees of Coussarea racemosa, Sclerolobium chrysophyllum, and Eschweilera pedicellata. The TTEE simulates an extended dry season in an eastern Amazonian rainforest, a plausible scenario if the El Niño phenomenon changes with climate...

Figure 1. Nutrients may be tied up in bryophytes for decades, or recycle within months, in forests with abundant bryophytes, as in this forest with Isothecium myosuroides. Photo by Michael Lüth. Few quantitative studies have addressed the role of bryophytes in ecosystem nutrient cycling. Nevertheless, bryophytes may play a significant role in N retention and release in the ecosystem (Figure 1)....