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  • 1
    ISSN: 1520-5029
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1939
    Keywords: Key words Carnivorous plants ; Pitcher plants ; Insect nitrogen ; Nitrogen partitioning
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract This study investigated the nitrogen (N) acquisition from soil and insect capture during the growth of three species of pitcher plants, Nepenthes mirabilis, Cephalotus follicularis and Darlingtonia californica. 15N/14N natural abundance ratios (δ15N) of plants and pitchers of different age, non-carnivorous reference plants, and insect prey were used to estimate proportional contributions of insects to the N content of leaves and whole plants. Young Nepenthes leaves (phyllodes) carrying closed pitchers comprised major sinks for N and developed mainly from insect N captured elsewhere on the plant. Their δ15N values of up to 7.2‰ were higher than the average δ15N value of captured insects (mean δ15N value = 5.3‰). In leaves carrying old pitchers that are acting as a N source, the δ15N decreased to 3.0‰ indicating either an increasing contribution of soil N to those plant parts which in fact captured the insects or N gain from N2 fixation by microorganisms which may exist in old pitchers. The δ15N value of N in water collected from old pitchers was 1.2‰ and contained free amino acids. The fraction of insect N in young and old pitchers and their associated leaves decreased from 1.0 to 0.3 mg g−1. This fraction decreased further with the size of the investigated tiller. Nepenthes contained on average 61.5 ± 7.6% (mean ± SD, range 50–71%) insect N based on the N content of a whole tiller. In the absence of suitable non-carnivorous reference plants for Cephalotus, δ15N values were assessed across a developmental sequence from young plants lacking pitchers to large adults with up to 38 pitchers. The data indicated dependence on soil N until 4 pitchers had opened. Beyond that stage, plant size increased with the number of catching pitchers but the fraction of soil N remained high. Large Cephalotus plants were estimated to derive 26 ± 5.9% (mean ± SD of the three largest plants; range: 19–30%) of the N from insects. In Cephalotus we observed an increased δ15N value in sink versus source pitchers of about 1.2‰ on average. Source and sink pitchers of Darlingtonia had a similar δ15N value, but plant N in this species showed δ15N signals closer to that of insect N than in either Cephalotus or Nepenthes. Insect N contributed 76.4 ± 8.4% (range 57–90%) to total pitcher N content. The data suggest complex patterns of partitioning of insect and soil-derived N between source and sink regions in pitcher plants and possibly higher dependence on insect N than recorded elsewhere for Drosera species.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Biodiversity and conservation 2 (1993), S. 667-680 
    ISSN: 1572-9710
    Keywords: spatial modelling ; potential mapping ; distribution mapping ; Bettongs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: This paper briefly reviews some limitations associated with the application of existing modelling procedures to conservation ecology, and describes a new procedure (DOMAIN) which avoids these problems. The procedure computes potential distributions based on a range-standardized, point-to-point similarity metric and provides a simple, robust method for modelling potential distributions of plant and animal species. DOMAIN offers advantages over similar methods in its ability to operate effectively using only presence records and a limited number of biophysical attributes. The use of a continuous similarity function gives DOMAIN increased flexibility as an heuristic tool, suitable for application in survey design, reserve selection and potential mapping of rare and common species. Potential distributions were computed for two Australian marsupial bettong species (Aepyprymnus rufescens ‘Gray’ and Bettongia tropica Wakefield) using DOMAIN and two alternative models. Of the three procedures, the DOMAIN model produced distribution patterns that were most consistent with the known ecology of the species, and most appropriate for survey design.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Potato research 31 (1988), S. 633-642 
    ISSN: 1871-4528
    Keywords: tuber dry-matter percentage ; tuber dry weights ; graded yields ; crisping quality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Assessments were made in three seasons of yields and tuber dry-matter percentages at harvests from June to early August in a range of cultivars gorwn at a coastal site in south-west Wales. Lareg differences in tuber dry-matter percentage were found between cultivars within seasons and also at similar dates between seasons.The cultivar Home Guard produced consistently high dry-matter percentages each year in the period from late June to early August but cv. Redord achieved similar or higher dry-matter contents after mid-Julyl. Most other cultivars produced lower dry matter percentages throughout the sampling period. The potential for the use of early maturing cultivars in late June and July for processing into crisps is discussed.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Potato research 32 (1989), S. 127-127 
    ISSN: 1871-4528
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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  • 6
    Publication Date: 1992-01-15
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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  • 7
  • 8
    Publication Date: 2015-12-25
    Description: Earth is home to a remarkable diversity of plant forms and life histories, yet comparatively few essential trait combinations have proved evolutionarily viable in today's terrestrial biosphere. By analysing worldwide variation in six major traits critical to growth, survival and reproduction within the largest sample of vascular plant species ever compiled, we found that occupancy of six-dimensional trait space is strongly concentrated, indicating coordination and trade-offs. Three-quarters of trait variation is captured in a two-dimensional global spectrum of plant form and function. One major dimension within this plane reflects the size of whole plants and their parts; the other represents the leaf economics spectrum, which balances leaf construction costs against growth potential. The global plant trait spectrum provides a backdrop for elucidating constraints on evolution, for functionally qualifying species and ecosystems, and for improving models that predict future vegetation based on continuous variation in plant form and function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Diaz, Sandra -- Kattge, Jens -- Cornelissen, Johannes H C -- Wright, Ian J -- Lavorel, Sandra -- Dray, Stephane -- Reu, Bjorn -- Kleyer, Michael -- Wirth, Christian -- Prentice, I Colin -- Garnier, Eric -- Bonisch, Gerhard -- Westoby, Mark -- Poorter, Hendrik -- Reich, Peter B -- Moles, Angela T -- Dickie, John -- Gillison, Andrew N -- Zanne, Amy E -- Chave, Jerome -- Wright, S Joseph -- Sheremet'ev, Serge N -- Jactel, Herve -- Baraloto, Christopher -- Cerabolini, Bruno -- Pierce, Simon -- Shipley, Bill -- Kirkup, Donald -- Casanoves, Fernando -- Joswig, Julia S -- Gunther, Angela -- Falczuk, Valeria -- Ruger, Nadja -- Mahecha, Miguel D -- Gorne, Lucas D -- England -- Nature. 2016 Jan 14;529(7585):167-71. doi: 10.1038/nature16489. Epub 2015 Dec 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Instituto Multidisciplinario de Biologia Vegetal (IMBIV), CONICET and FCEFyN, Universidad Nacional de Cordoba, Casilla de Correo 495, 5000 Cordoba, Argentina. ; Max Planck Institute for Biogeochemistry, Hans-Knoll-Strasse 10, 07745 Jena, Germany. ; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany. ; Systems Ecology, Department of Ecological Science, Vrije Universiteit, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands. ; Department of Biological Sciences, Macquarie University, Sydney, New South Wales 2109, Australia. ; Laboratoire d'Ecologie Alpine, UMR 5553, CNRS - Universite Grenoble Alpes, 38041 Grenoble Cedex 9, France. ; Laboratoire de Biometrie et Biologie Evolutive, UMR5558, Universite Lyon 1, CNRS, F-69622 Villeurbanne, France. ; Institute of Biology, University of Leipzig, Johannisallee 21, 04103 Leipzig, Germany. ; Escuela de Biologia, Universidad Industrial de Santander, Cra. 27 Calle 9, 680002 Bucaramanga, Colombia. ; Landscape Ecology Group, Institute of Biology and Environmental Sciences, University of Oldenburg, D-26111 Oldenburg, Germany. ; Department of Systematic Botany and Functional Biodiversity, University of Leipzig, Johannisallee 21, 04103 Leipzig, Germany. ; AXA Chair in Biosphere and Climate Impacts, Grand Challenges in Ecosystems and the Environment and Grantham Institute - Climate Change and the Environment, Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot SL5 7PY, UK. ; Centre d'Ecologie Fonctionnelle et Evolutive (UMR 5175), CNRS-Universite de Montpellier - Universite Paul-Valery Montpellier - EPHE, 34293 Montpellier Cedex 5, France. ; Plant Sciences (IBG-2), Forschungszentrum Julich GmbH, D-52425 Julich, Germany. ; Department of Forest Resources, University of Minnesota, St Paul, Minnesota 55108, USA. ; Hawkesbury Institute for the Environment, University of Western Sydney, Penrith New South Wales 2751, Australia. ; Evolution &Ecology Research Centre, School of Biological, Earth and Environmental Sciences, UNSW Australia, Sydney, New South Wales 2052, Australia. ; Collections , The Royal Botanic Gardens Kew, Wakehurst Place, Ardingly, West Sussex, RH17 6TN, UK. ; Center for Biodiversity Management, P.O. Box 120, Yungaburra, Queensland 4884, Australia. ; Department of Biological Sciences, George Washington University, Washington DC 20052, USA. ; Center for Conservation and Sustainable Development, Missouri Botanical Garden, St Louis, Missouri 63121, USA. ; UMR 5174 Laboratoire Evolution et Diversite Biologique, CNRS &Universite Paul Sabatier, Toulouse 31062, France. ; Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Ancon, Panama. ; Komarov Botanical Institute, Prof. Popov Street 2, St Petersburg 197376, Russia. ; INRA, UMR1202 BIOGECO, F-33610 Cestas, France. ; Universite de Bordeaux, BIOGECO, UMR 1202, F-33600 Pessac, France. ; International Center for Tropical Botany, Department of Biological Sciences, Florida International University, Miami, Florida 33199, USA. ; INRA, UMR Ecologie des Forets de Guyane, 97310 Kourou, French Guiana. ; Department of Theoretical and Applied Sciences, University of Insubria, Via J.H. Dunant 3, I-21100 Varese, Italy. ; Department of Agricultural and Environmental Sciences (DiSAA), University of Milan, Via G. Celoria 2, I-20133 Milan, Italy. ; Departement de biologie, Universite de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada. ; Biodiversity Informatics and Spatial Analysis, Jodrell Building, The Royal Botanic Gardens Kew, Richmond TW9 3AB, UK. ; Unidad de Bioestadistica, Centro Agronomico Tropical de Investigacion y Ensenanza (CATIE), 7170 Turrialba, 30501, Costa Rica.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26700811" target="_blank"〉PubMed〈/a〉
    Keywords: Biodiversity ; Databases, Factual ; Genetic Variation ; Internationality ; Models, Biological ; Nitrogen/analysis ; Organ Size ; *Phenotype ; Plant Development ; Plant Leaves/anatomy & histology ; *Plant Physiological Phenomena ; Plant Stems/anatomy & histology ; Plants/*anatomy & histology/classification ; Reproduction ; Seeds/anatomy & histology ; Selection, Genetic ; Species Specificity
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 1993-12-01
    Print ISSN: 0960-3115
    Electronic ISSN: 1572-9710
    Topics: Biology
    Published by Springer
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  • 10
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