3,733 research outputs found
Nitrogen fixation in the western English Channel (NE Atlantic Ocean)
No full textIn temperate Atlantic waters (18.8 to 20.1°C), biological nitrogen fixation has beendemonstrated by 2 independent measurements: 15N-N2 incorporation and nifH identification in theDNA and expressed messenger RNA (mRNA). At 2 stations in the western English Channel, bulkwaters were incubated with 15N-N2. At the high levels of particulate nitrogen (?11.5 ?mol N l–1),absolute fixation rates of 18.9 ± 0.01 and 20.0 nmol N l–1d–1 were determined. While a caveat mustaccompany the magnitude of the rates presented due to the limited number of data, the presence andactivity of diazotrophic organisms in these waters is of ecological significance and may affect currentattitudes to nitrogen and carbon budgets. In particular, our estimate of the rate of N fixation(0.35 mmol N m–2 d–1) is comparable to that of denitrification rates in UK shelf seas. Molecular analysisidentified a diversity of expressed nifH genes, and 21 different prokaryotic nifH transcripts wereidentified
The fifth beginning: what six million years of human history can tell us about our future/ Robert L. Kelly.
No full textIncludes bibliographical references and index."In The Fifth Beginning, archeologist Robert Kelly explains how the study of our cultural past can predict the future of humanity. In an eminently readable style, Kelly identifies four key pivot points in the six-million-year history of human development: the emergence of technology, culture, agriculture, and the state. In each example, the author examines the long-term processes that resulted in a definitive no-turning-back change for the organization of society. Kelly then looks ahead, giving us evidence for what he calls a fifth beginning, one that began about AD 1500. Some might call it 'globalization, ' but the author places it in its larger context: a 5,000-year arms race, capitalism's global reach, and the cultural effects of a worldwide communication network. Kelly predicts the emergent phenomena of this fifth beginning will include the end of war as a viable way to resolve disputes, the end of capitalism as we know it, the widespread appearance of world citizenship, and forms of cooperation that end nation-states' near-sacred status. It's the end of life, as we have known it. However, this book and the author are cautiously optimistic: it dwells not on the coming chaos, but on humanity's great potential"--Provided by publisher.The end of the world as we know it -- How archaeologists think -- Sticks and stones : the beginning of technology -- Beads and stories : the beginning of culture -- Bread and beer : the beginning of agriculture -- Kings and chains : the beginning of the state -- Nothing lasts forever : the fifth beginning.1 online resource (pages cm
Fig. 5 in The genus Argathona Stebbing, 1905 (Crustacea: Isopoda: Corallanidae) in Singapore marine waters, with description of two new species
No full textFig. 5. Argathona lineata, new species, paratypes, A, female, 9.7 mm; B, female 10.1 mm; ZRC 2020.0138. A, uropod; B, uropod, showing marginal robust setae only.Published as part of Bruce, Niel L., Wong, Helen P.-S. & Merrin, Kelly L., 2022, The genus Argathona Stebbing, 1905 (Crustacea: Isopoda: Corallanidae) in Singapore marine waters, with description of two new species, pp. 492-510 in Raffles Bulletin of Zoology 70 on page 499, DOI: 10.26107/RBZ-2022-0027, http://zenodo.org/record/739985
FIGURE 3 in Nyctobadistes gen. nov. (Isopoda: Asellota: Munnopsidae), a new genus from Tasmanian waters, Australia, with the description of a new species
No full textFIGURE 3. Nyctobadistes hamatus sp. nov. A, male holotype, 3.2 mm (NMV J18840); B, F–H, female paratype, 5.0 mm (NMV J54111); C–E, male paratype, 3.0 mm (NMV J54111). A, left pereopod 7; B, operculum; C, pleopod 1; D, distal end of pleopod 1; E, left pleopod 2; F, left pleopod 3; G, left pleopod 4; H, left pleopod 5.Published as part of Merrin, Kelly L., 2011, Nyctobadistes gen. nov. (Isopoda: Asellota: Munnopsidae), a new genus from Tasmanian waters, Australia, with the description of a new species, pp. 59-65 in Zootaxa 3025 on page 63, DOI: 10.5281/zenodo.20209
Charles Kelly with A. R. Mortenson, Dave Bigler, and E. L. Cooley
No full textA. R. Mortenson, Dave Bigler, E. L. Cooley presented an American Association for State and Local History award to Charles Kelly at Utah Westerner\u27s meeting. Charles Kelly was a printer, artist, author, historian, the first superintendent of Capitol Reef National Park
Charles Kelly with A. R. Mortenson, Dave Bigler, and E. L. Cooley
No full textA. R. Mortenson, Dave Bigler, E. L. Cooley presented an American Association for State and Local History award to Charles Kelly at Utah Westerner\u27s meeting. Charles Kelly was a printer, artist, author, historian, the first superintendent of Capitol Reef National Park
Argathona confine Hale 1925
No full text1. Argathona confine Hale, 1925 . Albany Passage, Queensland, Australia; ‘taken in a Comatula ’; 0–30 metres. Supplementary figures given by Delaney (1989, figure 9).Published as part of Bruce, Niel L., Wong, Helen P. - S. & Merrin, Kelly L., 2022, The genus Argathona Stebbing, 1905 (Crustacea: Isopoda: Corallanidae) in Singapore marine waters, with description of two new species, pp. 492-510 in Raffles Bulletin of Zoology 70 on page 493, DOI: 10.26107/RBZ-2022-0027, http://zenodo.org/record/739985
Argathona sulcata Richardson 1910
No full text14. Argathona sulcata Richardson, 1910 . East coast of Luzon, Legaspi Light, at a depth of 267 metres, Philippines. Pleotelson dorsal surface with four longitudinal carinae.Published as part of Bruce, Niel L., Wong, Helen P. - S. & Merrin, Kelly L., 2022, The genus Argathona Stebbing, 1905 (Crustacea: Isopoda: Corallanidae) in Singapore marine waters, with description of two new species, pp. 492-510 in Raffles Bulletin of Zoology 70 on page 494, DOI: 10.26107/RBZ-2022-0027, http://zenodo.org/record/739985
FIGURE 1 in Bridging the gap: first record of sponge genus Strongylodesma in Australian waters
No full textFIGURE 1. Strongylodesma australiense sp. nov., holotype NMVF246384: B. Close view showing porefield mounds (lower half) and flush oscule (arrow); C.–G. Range of megascleres showing irregular thickening and slightly sinuous curves in the shorter spicules in F. and G.; H. 'Shepherd's crook' modification; I. Undeveloped 'shepherd's crook' modification; J. Pseudotylote modification; K. Bifurcate proximal end of megasclere; L. Centrotylote modification; M. Hand-section showing thick ectosome of confused to paratangential megascleres, with a thin, clear collagenous layer beneath (arrow), and choanosome with paratangential interstitial megascleres; N. Hand-section showing massive primary tract beneath ectosome.Published as part of Kelly, Michelle & Goudie, Lisa, 2020, Bridging the gap: first record of sponge genus Strongylodesma in Australian waters, pp. 397-400 in Zootaxa 4808 (2) on page 398, DOI: 10.11646/zootaxa.4808.2.13, http://zenodo.org/record/393346
Argathona parca Hale 1940
No full text9. Argathona parca Hale, 1940 . A smooth-bodied species with a relatively long and slender frontal lamina. Known only ‘from eye of Queensland Groper’ [= grouper, Serranidae], Humocky Island [north of Gladstone], Queensland.Published as part of Bruce, Niel L., Wong, Helen P. - S. & Merrin, Kelly L., 2022, The genus Argathona Stebbing, 1905 (Crustacea: Isopoda: Corallanidae) in Singapore marine waters, with description of two new species, pp. 492-510 in Raffles Bulletin of Zoology 70 on page 494, DOI: 10.26107/RBZ-2022-0027, http://zenodo.org/record/739985
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