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  • 1
    Monograph available for loan
    Monograph available for loan
    Environmentalism and the New Logic of Business : How firms can be profitable and leave our children a living planet (2000)
    Oxford : Oxford University Press
    Details Availability
    Call number: PIK B 160-02-0073
    Type of Medium: Monograph available for loan
    Pages: 146 p.
    ISBN: 0195080939
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 2
    Electronic Resource
    Electronic Resource
    Wide-Field Camera for Gravitational Microlensing Survey: MOA-cam2 (2000)
    Springer
    Experimental astronomy 10 (2000), S. 519-535 
    Details
    ISSN: 1572-9508
    Keywords: dark matter ; MACHO ; wide-field camera
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have constructed a large, mosaic CCD camera called MOA-cam2 which has 4096 × 6144-pixelsto search for gravitational microlensing events. MOA-cam2 has three4096 × 2048-pixel SITe CCD chips, which have a very high quantum efficiency (nearly 80% in the wave region 500 to 800 nm),and three buttable sides. We have placed the threechips side by side with 100 μm dead space. MOA-cam2 has been installed on the 61 cm Boller and Chivens telescope of the MOA collaboration at the Mt. John University Observatory (MJUO) in NewZealand since July 1998. The field coverage is 0.92° × 1.38° per exposure. The technical details of MOA-cam2 and the first images obtained with the Boller and Chivens telescope are presented. MOA-cam2 introduces a second phase of research on gravitational microlensing by the MOA collaboration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008178000236
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A case of natural selection in Atlantic-East-Pacific Rhizophora (1999)
    Springer
    Hydrobiologia 413 (1999), S. 1-9 
    Details
    ISSN: 1573-5117
    Keywords: ecological genetics ; adaptation ; Rhizophora ; mangroves ; cuticular waxes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We have examined possible adaptation in cuticular alkane composition in the halophytic mangrove genus Rhizophora. Relative composition of the dominant alkanes varied: 1. among the three sympatric species from the Atlantic-East-Pacific region, 2. with geographic region within species and, 3. among populations within geographic region. For R. mangle, longer chain alkanes were more important in the semi-arid regions of north-west Africa and the Pacific coast of north-central Mexico. Mantel tests showed that inter-population taxonomic distances for the major alkanes were correlated with taxonomic distances for annual rainfall and mean maximum temperature, but not with weighted geographic distance. Since alkane carbon chain length should affect the biophysical properties of waxes, with longer chain lengths increasing crystallinity and impermeability, our data provides support for the hypothesis that observed differentiation is due to natural selection, rather than stochastic processes in this species. The same pattern was not observed for R. racemosa or R. harrisonii. Since these two species occupy less saline conditions and are more restricted in their latitudinal range, selection pressure may be less important than other evolutionary forces such as genetic drift. There was some evidence that alkane composition was more closely correlated with mean minimum temperatures in R. racemosa, that might set the latitudinal limits in this species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003882508994
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  • 4
    Electronic Resource
    Electronic Resource
    Biometrical variability of foliage and cone characters inCupressus bakeri (Cupressaceae) (1994)
    Springer
    Plant systematics and evolution 192 (1994), S. 151-163 
    Details
    ISSN: 1615-6110
    Keywords: Cupressaceae ; Cupressus bakeri ; Baker cypress ; Biodiversity ; systematics ; morphology ; numerical taxonomy ; Flora of western North America
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Biometrical variability of foliage, cones, and seeds were analyzed in 8 native populations (throughout the range) of a relictual species,Cupressus bakeri Jeps. (Cupressaceae) from California and Oregon. The partition of variation within and among populations for this rare plant was investigated and the justification for subspecies status was reviewed. Morphological characters varied significantly, with more of the variation among populations than at the population level. Multivariate analyses indicated close affinities among populations on serpentine sites suggesting the presence of a serpentine race. However, the high degree of variation among populations did not permit their clear separation into the two subspecies described byWolf (1948). We conclude thatC. bakeri should be treated as a monotypic species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00986249
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  • 5
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    Observed and predicted effects of climate change on species abundance in protected areas (2013)
    Springer Nature
    Details
    Publication Date: 2013-11-27
    Description: Will networks of protected areas remain effective as the climate changes? Research into the response of bird populations to climate variance and change attempts to shed light on this issue. Results suggest that despite projected declines in many of the species investigated, most sites that are designated as EU Special Protection Areas in the UK can be expected to retain their conservation value and legal status. Nature Climate Change 3 1055 doi: 10.1038/nclimate2035
    Print ISSN: 1758-678X
    Electronic ISSN: 1758-6798
    Topics: Geosciences
    Published by Springer Nature
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  • 6
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    Variation in wood structure of white fir along an elevational transect (1986)
    Canadian Science Publishing
    Details
    Publication Date: 1986-04-01
    Description: Several wood structural characteristics were measured in 15-year-old Abiesconcolor (white fir) from four populations along an elevational transect in the central Sierra Nevada region. The trees had been growing in a plantation near Placerville, California. Growth rings were narrower at breast height, latewood percentage tended to be greater, and tracheids were shorter in trees from higher elevation populations. Proportion of family variance components was greater than population for specific gravity and spiral grain angle. The characteristics that showed greatest population components of variation would be largely determined by durations and rates of shoot and radial growth. Presumably, length of the growing season would exert stronger selection pressure on these variables than on other characteristics of wood structure.
    Print ISSN: 0045-5067
    Electronic ISSN: 1208-6037
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Canadian Science Publishing
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  • 7
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    Cyclophytic effects on wood structure in Pinusradiata D. Don. II. Tracheid morphology (1988)
    Canadian Science Publishing
    Details
    Publication Date: 1988-04-01
    Description: The effects of apical ontogeny on xylem morphology in Pinusradiata were examined in grafted trees and in clonal pairs of trees grown from cuttings from hedge- and tree-form donors (H and T). At the time of sampling the grafted rootstocks were 21 years old, and trees from H and T plants were 11 years old from the date of planting rooted cuttings. In grafted trees tracheids were longer, and the rate of increase in tracheid length was greater above the graft. Since growth rings were narrower above the graft, the difference in rate of increase in tracheid length above and below the graft was greater when plotted against distance from pith than against growth ring number. In comparisons of H and T plants, T plants (expected to be at a later stage of apical ontogeny) produced fewer but longer and wider tracheids. Cell wall volumes per tracheid were greater in T plants, but because the tracheid diameters in H plants were smaller, wall volumes per unit tracheid volumes were consistently greater in H plants. The role of apical ontogeny in explaining patterns of anatomical variation within the stem is discussed. H and T plants of radiata pine were from the three mainland populations: Año Nuevo, Monterey, and Cambria. The Año Nuevo population produced the greatest numbers and the largest tracheids. The Monterey population had the shortest tracheids amongst H plants, but their tracheid lengths were equal to those of the Año Nuevo population in T plants.
    Print ISSN: 0045-5067
    Electronic ISSN: 1208-6037
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Canadian Science Publishing
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  • 8
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    Population variation in wood structure of white fir (1994)
    Canadian Science Publishing
    Details
    Publication Date: 1994-11-01
    Description: Wood X-ray densitometry (inter- and intra-ring wood density, ring width) and measurements of tracheid length were used to evaluate wood structural variability in 93 trees from 33 populations of white fir (Abiesconcolor (Gord. et Glend.) Lindl.). Individuals from populations representing the geographic range of the species had been growing for 24 years in a plantation near Placerville, California. Growth ring widths showed a clinal increase from northern Oregon to southern Californian populations, due mostly to variations in width of the earlywood. Rates of change from pith to bark in tracheid lengths and earlywood density decreased from northern Oregon to southern California, with the highest rates of change being among Utah populations. Slower rates of change in tracheid length and wood density would contribute to more uniform wood structure in these southern populations. Multivariate analyses confirmed the separation of regional groups within white fir. Results indicated that there is a differentiation between northern and southern Californian white fir, consistent with the former being ascribed to A. concolor var. lowiana and the latter to A. concolor var. concolor. Arizonan populations were grouped with southern Californian white fir.
    Print ISSN: 0045-5067
    Electronic ISSN: 1208-6037
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Canadian Science Publishing
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  • 9
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    Cyclophytic effects on wood structure in Pinus radiata D. Don. I. Densitometry and grain angle (1988)
    Canadian Science Publishing
    Details
    Publication Date: 1988-04-01
    Description: Wood structural characteristics were compared in 11-year-old Pinusradiata trees from hedge- and tree-form donors (H and T) to examine the effects of apical ageing (cyclophysis) on wood formation. Although the differences were small, T plants tended to produce wood with narrower growth rings and lower density in the first two rings. T plants showed a greater contrast between density at the end of one growth ring and the beginning of the next. The lower mean growth ring density in T plants was mainly due to a lower earlywood density with little difference in latewood density or latewood percentage. Although differences in density from early- to late-wood were greater in T plants, there was no difference between H and T plants in within-ring density variation. This was due to greater fluctuations in density across growth rings of H plants, perhaps because these plants were less buffered against the environment. Differences in wood structure between H and T plants were not the same for all clones, as shown by significant interactions in the analyses of variance. These different responses may have resulted from differences in the effectiveness of hedging in slowing apical maturation, or from differences in rates of maturation.
    Print ISSN: 0045-5067
    Electronic ISSN: 1208-6037
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Canadian Science Publishing
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  • 10
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    Within-tree variation in wood production and wood quality in sycamore (Acerpseudoplatanus): its relation to crown characteristics (1985)
    Canadian Science Publishing
    Details
    Publication Date: 1985-02-01
    Description: To quantify patterns of wood formation in sycamore (Acerpseudoplatanus L.), the seasonal progress of wood production and structure was followed systematically throughout the outer growth sheath of the main stem and major branches. These data were considered in relation to the profile of leaf dry weight down through the crown in 8- and 12-year-old trees at stages before and after canopy closure, respectively. Mature fibre production was earliest towards the tips of the branches of the midcrown, and spread basipetally along the branches. In the main stem, mature fibre production was earliest at the tip and spread down the tree, taking about 10 days to reach the base of both pre- and post-canopy closure trees. In the stem, later fibre production down the tree was offset by later cessation of fibre maturation basally. Branch data suggested that the pattern of cessation may depend on the branch position, because cessation was latest at the base of the upper branches and at the tip of the lower branches. The maximum rate of fibre production was in the upper stem, several internodes higher than the internode bearing maximum leaf dry weight. Despite this, ring width increased down the stem, presumably as a result of the increased duration of fibre production and increased cell size. Within growth rings, vessel size remained nearly constant before declining sharply towards the end of the ring. Trees with narrower growth rings tended to have more of their ring occupied by declining vessel size suggesting a slight inverse relationship between ring width and specific gravity. Specific gravity increased down the outer growth sheath of the stem, and this increase was associated with systematic trends in fibre and vessel dimensions, together with changes in the relative proportions by area of the different tissues. Although some anatomical characters appeared to vary with the profile of the crown, others appeared to be independent of crown profile.
    Print ISSN: 0045-5067
    Electronic ISSN: 1208-6037
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Canadian Science Publishing
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