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Harvest methods (peak standing crop, and the methods of Milner and Hughes, Smalley, Valiela, Teal & Sass, and Wiegert & Evans) were used to es...
Read moreCarrying capacity is the maximum animal density an area can sustain without deterioration of its resources. Overgrazing has degraded Patagonia, but sh...
Read moreGives estimates of net primary productivity derived from studies of (1) a forest (climatic climax) site and (2) a savanna (fire climax) site in Nigeri...
Read moreA mathematical model was constructed to simulate various above-ground and below-ground compartments of the producer subsystem for a shortgrass prairie...
Read moreThe dry-weight increment of A. pseudoplatanus seedlings, initially 60-90 cm. high, was measured by growth analysis. Seedlings were planted out 90 cm. ...
Read moreThis paper describes the impact of the invasive tree, Prosopis juliflora, on the supply of ecosystem services. Prosopis significantly increased the su...
Read moreVegetation structure and net primary production (NPP) are fundamental properties of ecosystems. Understanding how restoration practices following dist...
Read moreA series of root-pruning experiments was performed to simulate the effects of grazing by root-feeding herbivores on B. gracilis. Approx. 37% (c. 22 mg...
Read moreIn field trials at Kjettslinge near Uppsala in 1980-85, annual C and N budgets were calculated for the following systems: (a) barley without fertilize...
Read moreAbove-ground arthropod populations in field plots of barley receiving no nitrogen (barley 0), barley receiving 120 kg nitrogen per hectare per year (b...
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