165,989 research outputs found

    Consumption of submerged aquatic macrophytes by rudd (scardinius erythrophthalmus L.) in New Zealand

    No full text
    In experiments in New Zealand, rudd (Scardinius erythrophthalmus L.) of 108–277mm fork length (FL) ate a wide range of native and introduced submerged aquatic macrophytes in captivity and in the field. Rudd consumed the native charophytes Chara globularis Thuill., Chara fibrosa Ag. ex Bruz., and Nitella spp., the native macrophytes Potamogeton ochreatus Raoul. and Myriophyllum propinquum A. Cunn., and the introduced macrophytes Elodea canadensis Michx., Egeria densa Planch., Lagarosiphon major L., and Ceratophyllum demersum L. Rudd consistently consumed the Nitella spp. and Potamogeton ochreatus before Ceratophyllum demersum. From the results of experiments in tanks and in the field, we found the order of highest to lowest palatability was: Nitella spp. > Potamogeton ochreatus > Elodea canadensis> Chara globularis = Chara fibrosa> Egeria densa = Lagarosiphon major > Myriophyllum propinquum > Ceratophyllum demersum. The order of consumption was subject to some variation with season, especially for Egeria densa, Lagarosiphon major, and Myriophyllum propinquum. Rudd consumed up to 20% of their body weight per day of Egeria densa in spring, and 22% of their body weight per day of Nitella spp. in summer. Consumption rates were considerably lower in winter than in summer. The results of our field trial suggested that the order of consumption also applies in the field and that rudd are having a profound impact on vulnerable native aquatic plant communities in New Zealand. Nitella spp. and Potamogeton ochreatus are likely to be selectively eaten, and herbivory by rudd might prevent the re-establishment of these species in restoration efforts

    Biology and potential impacts of rudd (Scardinius erythrophthalmus L.) in New Zealand

    No full text
    Rudd (Scardinius erythrophthalmus) is a cyprinid fish native to Europe that was illegally introduced into New Zealand in 1967. Between the 1960s and 1980s rudd were illegally spread to a number of lakes, ponds, and rivers in New Zealand, principally from the Waikato north. They now also occur in the Wanganui, Manawatu, Nelson, and Canterbury regions. Rudd undergo ontogenetic changes in diet as they grow. Young-of-the-year rudd (58–65 mm mean fork length (FL)) ate a mixture of planktonic cladocerans and chironomid pupae, and potentially competed for these foods with common smelt (Retropinna retropinna). Larger rudd (100–149 mm FL) were primarily benthivorous, and potentially competed with perch (Perca fluviatilis) of the same size, brown bullhead catfish (Ameiurus nebulosus), and probably common bullies (Gobiomorphus cotidianus). Rudd of still larger sizes were increasingly herbivorous, until at >200 mm FL their diet was >80% plant material. As rudd prefer native species of aquatic macrophytes to the introduced species, they can probably modify native plant communities and aid the invasion of introduced aquatic weeds. They may also have contributed to the switch of Hamilton Lake from a macrophyte-dominated state to a phytoplankton-dominated state. It is time for the threats posed by rudd to be recognised, and for an education campaign to be mounted. As past rudd introductions have been done outside the law, increasing the severity of penalties for further illegal transfers is unlikely to be effective, and the coarse angling community should instead be included in management decisions concerning rudd

    J. Allan Crocket

    No full text
    Transcript (13 pages) of an interview by Hynda Rudd with Judge J. Allan Crockett on his recollections of law professor and judge Herbert M. Schiller, on June 18, 1977. From tape number H-33 in the Jewish Oral History ProjectInterview with Judge J. Allan Crockett about Judge Herbert M. Schiller in which Crockett recalls his first impression of Schiller, gives a personal profile, and recalls the judge\u27s "kaleidoscopic" interests. He also recalls a talk Schiller gave on the qualities a judge should have and discusses the state capitol law library

    J. Holman Waters on Samuel Newhouse

    No full text
    Transcript (27 pages) of an interview by Hynda Rudd with J. Holman Waters about his recollections of Samuel Newhouse on July 16, 1977. From tape number H-34 in the Jewish Oral History ProjectThe subject of this interview is Samuel Newhouse. Mr. Waters\u27 father, James W. Waters, organized the Bonneville Hotel Company and leased the Hotel Newhouse. Waters recalls growing up in the Hotel Newhouse and gives a personal profile of Samuel Newhouse

    Mrs Steele Rudd (Violet Christina) and daughter Violet Mary, Nobby, Queensland, ca. 1914 [picture] /

    No full text
    Title devised by cataloguer.; Condition : Fair.; Inscriptions: "photographer F. J. Betts, Nobby" --Stamped on reverse; "Rudd, Mrs Steele (Violet Christina) and daughter Violet Mary (Mrs A. H. Davis). Taken outside the farm at 'The Firs' - Nobby Qld, c1914. property owned by Steele Rudd 1908-1917. Horse - Creamy" --Compactus card.; Also available online at: http://nla.gov.au/nla.pic-an23493302

    Australia and the Middle East conflict: the Rudd and Gillard Governments (2007–13)

    No full text
    This Research Paper outlines the public positions taken by the Rudd and Gillard Governments towards the Israeli-Palestinian conflict. Executive summary This Research Paper focuses on the public position of the Labor Governments, in power between 2007 and 2013, towards the Israeli-Palestinian dispute. It does so by looking at the Rudd and Gillard Governments’ responses to developments and their statements regarding key issues such as Israeli settlements and Palestinian statehood. Updated to cover the period up to the 2013 election, it includes discussion of potential policy or rhetorical shifts made in the lead-up to that election. This paper complements another Parliamentary Library publication—Australia and the Middle East conflict: a history of key Government statements (1947–2007)—which tracks the evolution of Australia’s publicly stated position on the Middle East conflict up until the election of the Rudd Labor Government in 2007

    Bob Rudd

    No full text
    Black and white photograph of a man identified as "Bob Rudd," probably Robert D. Rudd, who was a professor of geography and natural resources in Wisconsin, Ohio, Oregon, and Colorado. He was a colleague of H. Bowman Hawkes in the Association of American Geographers

    [The Steele Rudd Amateur Dramatic Company] [picture] .

    No full text
    Condition : Fair, some flaking and marks.; Title from caption on compactus card.; "Rudd, Steele, The Steele Rudd Amateur Dramatic Company, formed in Toowoomba in 1915 - produced his play 'Duncan McClure', formed to raise funds for patriotic purposes" --Compactus card. Members of company: back row left to right: R. Dibley, B. Bunny, R. O'Connor, L. Hopkins [?], J.R. Nolan, G. Barlow, K. McKinney, A. Drew, L. Wilkinson, J. McMaster. Middle row: A. Black, Miss J. Groom, R.A. Elliott, A.H. Davis (Steele Rudd), Mrs V. Yaldwin, M. McWaters [?]. Front row: Miss E. Shepherd [?], Miss V. Yaldwin, Miss E. Dayley, Miss G. Warren

    Ormosia flava Rudd

    No full text
    [893] Ormosia flava (Ducke) Rudd Contr. U.S. Natl. Herb. 32 (5): 298 [17 Sep.1965] (Rudd 1965). — Clathrotropis flava Ducke, Arch. Jard. Bot. Rio de Janeiro 3: 134 (Ducke 1922). — Ormosiopsis flava (Ducke) Ducke, Arch. Jard. Bot. Rio de Janeiro 4: 61 (Ducke 1925). Clathrotropis surinamensis Kleinhoonte, Recueil Trav. Bot. Néerl. 22: 395 [“1925” publ. Jan. 1926] (Kleinhoonte 1926). VERNACULAR NAMES. — Ka: alesikɨ’ i • Wp: mẽwã • Br: breusucupira, tento-preto. HERBARIUM DATA (FG). — 9 collections at CAY. Sel. exs.: J.-F. Molino & D. Sabatier 2403. INVENTORY DATA (FG). — 6 trees in 5 plots; Fmax <1 %; dbhinv = 38.2 cm.Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 531, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/745877

    Close (John J.), Rudd (Alan W.G.). Plimmer (Franck). — Team teaching experiments. (Expériences d'enseignement par équipes)

    No full text
    Lesage André. Close (John J.), Rudd (Alan W.G.). Plimmer (Franck). — Team teaching experiments. (Expériences d'enseignement par équipes). In: Revue française de pédagogie, volume 36, 1976. pp. 69-71
    corecore