Global ETD Search
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Showing 1 to 12 of 12 for “"LITTER PRODUCTION"”.
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Litter production and accumulation in naturally seeded, old-field, Virginia pine (Pinus virginiana Mill.) stands
Litter-fall and litter-layer data were collected from stands of 7, 13, 19 and 36-year-old naturally seeded, old-field, Virginia pine. The pattern of yearly litter-fall was highly seasonal with maximum needlefall occurring during the fall months. Estimated annual total litterfall ranged …
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Seasonal and Spatial Variation in Leaf Area Index, Litter Production, and Light Levels in Myrica Cerifera,Shrub Thickets Across a Barrier Island Chronsequence
Leaf area index (LAI), litter production and understory light levels of Myrica cergera shrub thickets were assessed on Hog Island, Virginia to quantify spatial and seasonal variations in leaf area and light attenuation among four thickets representing a successional chronosequence and compare …
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Response of a sand-plain lowland fynbos ecosystem to nutrient additions
… of Thamnochortus punctatus (Restionaceae). 4) Litter production and nutrient return. 5) Above-ground phytomass, nitrogen and phosphorus contents of the representative plant growth forms in response to non-factorial addition of N, P and M. 6) Foliage projective cover of the representative growth …
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Variação espacial e temporal na estrutura do habitat e prefência de microhabitat por pequenos mamíferos na Mata Atlântica
… microhabitat and mesohabitat structures, and of litter production, that must be considered in habitat preference studies on small mammals was discussed. Finally microhabitat preference by small mammals was studied through logistic regression, seeking for a pattem of species occurrence in the …
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Three essays on environmental issues associated with broiler production in Louisiana
… trends of integrated and concentrated broiler production results in a serious threat to environment through excessive litter production and lack of its proper disposal. Production concentration in limited area is a major source of surface as well as ground water pollution. Nonpoint source …
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The economic potential of establishing a poultry litter handling industry
Rapid increases in poultry litter production in concentrated areas has caused litter to be overapplied to nearby cropland at higher rates than the agronomic requirements of crops. Surface and ground water pollution has resulted due to leaching and runoff of nutrients in the litter. One solution to …
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The Effect of PDSS2, a Component of the Coenzyme Q Biosynthetic Pathway, on Murine Oocyte Embryo Development
… as low ovulation rates and inability to produce litters. Embryonic health was also drastically reduced, and most Pdss2-deficient embryos arrested at the 2-to 4-cell stage during in vitro development. Highlighting the importance of coQ and Pdss2 in the maintenance of mitochondrial health, oocytes …
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Virgin hardwood forest soils of western North Carolina
… 1.3 m in diameter and 50 m in height. Total litter production averaged 3494 kg/ha, and the litter layers were typified by thin leaf (L), and well developed fermentation (F) and humus (H) layers. Cations and P are concentrated in the litter layers and immediate surface soil, while N is mixed …
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Soil microbial community dynamics associated with agricultural crops
… plants, via their growth, root exudation and litter production, are critical to the maintenance and growth of soil microbe populations. Despite their close association and importance to global agriculture, our understanding of the interactions between crop plants and their associated soil …
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The hydrological effects of changes in forest area and species composition in the federal state of Brandenburg, Germany
… in addition to the satisfactory simulation of litter production. A comparison of the simulated and measured data of the May sprout for Scots pine and leaf unfolding for Oak, as well as the evaluation against daily transpiration measurements for Scots Pine, does support the applicability of the …
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ΜΕΛΕΤΗ ΤΗΣ ΣΤΡΩΜΝΗΣ, ΤΗΣ ΑΠΟΣΥΝΘΕΣΗΣ ΚΑΙ ΤΗΣ ΚΟΙΝΟΤΗΤΑΣ ΤΩΝ ΑΡΘΡΟΠΟΔΩΝ ΣΕ ΟΙΚΟΣΥΣΤΗΜΑΤΑ ΧΑΛΕΠΕΙΟΥ ΠΕΥΚΗΣ ΤΗΣ ΝΗΣΙΩΤΙΚΗΣ ΕΛΛΑΔΑΣ
… COMMUNITY 2. THE PHENOLOGY AND THE QUANTITY OF LITTER FALL 3. THE RATE OF DECOMPOSITION OF ORGANIC MATTER IN THE FOREST FLOOR AND4. THE TEMPORAL AND SPATIAL STRUCTURE OF THE ARTHROPOD COMMUNITY. THIS TYPE OFAPPROACH IS REALIZED FOR THE FIRST TIME IN GREECE. THE MOST IMPORTANT RESULTS OF THE …
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Elevation Effects on Key Processes of Carbon Cycling in South Ecuadorian Mountain Forests
Diese Studie über Wälder Süd-Ecuadors hat das Ziel große Wissenslücken zu füllen, den Kohlenstoffkreislauf montaner Regenwälder in einer Meereshöhe von 1000 bis 3000 m betreffend. Besondere Aufmerksamkeit wurde dabei auf den bisher unbekannten Kohlenstoffumsatz durch Feinwurzeln, Stammholzzuwachs …