The nematode communities of 36 grassland ecosystems in Romania, belonging to different plant associations and soil types, were studied. The abundance of nematodes, the species and trophic types present, as well as their distribution in relation to plant community and soil characteristics are analyzed and discussed. The abundance of nematodes from the 36 grasslands studied ranged between 0.41 × ...

The effect of warm-season precipitation on the diel cycle of the surface energy balance and carbon dioxide at a Colorado subalpine forest site S. P. Burns, P. D. Blanken, A. A. Turnipseed, and R. K. Monson Department of Geography, University of Colorado, Boulder, Colorado, USA National Center for Atmospheric Research, Boulder, Colorado, USA 2B Technologies, Inc., Boulder, Colorado, USA School o...

The sub-alpine zones of oceanic islands are unique and dynamic ecosystems with high levels endemism, making them particularly suitable model systems in which to investigate evolutionary biogeographic processes. flora the Canary Islands is restricted Tenerife La Palma. Its origins poorly understood. Echium wildpretii Hook.f. an iconic species subalpine these two islands, distinct subspecies reco...

Limited knowledge is available about the growth of Norway spruce saplings related to spring climate, especially snow duration, in subalpine forests. The primary goal of this research was to quantify the relative importance of the direct and indirect drivers of growth for spruce saplings in subalpine forests that are related to spring climate. Two related, subordinate goals were to compare the s...

A new wingless ground beetle, Calathus (Calathus) jakupicensis nov. sp. (type locality: subalpine zone of Karadzica Mt., Jakupica Massif, Macedonia) is described. The diagnostic characters of the species are defi ned and illustrated, making possible its recognition. The new species is eastern vicariant and adelphotaxon of C. (C.) ravasinii J. MÜLLER.

Woody species encroachment on grassland ecosystems is occurring worldwide with both negative and positive consequences for biodiversity conservation ecosystem services. Remote sensing image analysis represent useful tools the monitoring of this process. In paper, we aimed at evaluating quantitatively potential using high-resolution UAV imagery to monitor process during its early development com...

In a deep, subalpine holo-oligomictic lake, the relative abundance of Archaea and Crenarchaeota, but not that of Bacteria, increases significantly with depth and varies seasonally. Cell-specific prokaryotic productivity is homogeneous along the water column. The concept of active Archaea observed in the deep ocean can therefore be extended to a deep oxic lake.

Forest litter accumulation can regulate the soil microclimate and alter nutrient distribution, but effects of quality seasonal differences on nitrogen (N) mineralization are still uncertain. The change rates net N mineralization, nitrification, ammonification were studied through in situ incubation experiments coniferous, mixed, broad-leaved forests eastern Qinghai–Tibetan Plateau. Two treatmen...

Subalpine spruce (Picea) -fir (Abies) forests Occur throughout the Cordillera of western North America. A variety of alternative silvicultural systems to clear-cutting are being investigated in these high-elevation forests in terms of their impacts on ecosystem components. We tested the hypotheses that abundance, reproduction, and survival of populations of (i) southern red-backed voles (Clethr...