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  • 1
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    Sedimentary Processes in the Intertidal Zone (1998)
    London : The Geological Society
    Details
    Keywords: Sedimentation ; Watt ; Coast changes ; Coasts ; Estuarine sediments ; Intertidal zonation ; Marine sediments ; Sediment transport ; Sedimentation and deposition
    Description / Table of Contents: LISP-UK Studies --- K. S. Black and D. M. Paterson: LISP-UK Littoral Investigation of Sediment Properties: an introduction / Geological Society, London, Special Publications, 139:1-10, doi:10.1144/GSL.SP.1998.139.01.01 --- K. R. Dyer: The typology of intertidal mudflats / Geological Society, London, Special Publications, 139:11-24, doi:10.1144/GSL.SP.1998.139.01.02 --- Carl L. Amos, M. Brylinsky, T. F. Sutherland, D. O’Brien, S. Lee, and A. Cramp: The stability of a mudflat in the Humber estuary, South Yorkshire, UK / Geological Society, London, Special Publications, 139:25-43, doi:10.1144/GSL.SP.1998.139.01.03 --- M. C. Christie and K. R. Dyer: Measurements of the turbid tidal edge over the Skeffling mudflats / Geological Society, London, Special Publications, 139:45-55, doi:10.1144/GSL.SP.1998.139.01.04 --- D. J. Law and A. J. Bale: In situ characterization of suspended particles using focused-beam, laser reflectance particle sizing / Geological Society, London, Special Publications, 139:57-68, doi:10.1144/GSL.SP.1998.139.01.05 --- Sue L. Brown: Sedimentation on a Humber saltmarsh / Geological Society, London, Special Publications, 139:69-83, doi:10.1144/GSL.SP.1998.139.01.06 --- John Widdows, Mary Brinsley, and Mike Elliott: Use of in situ flume to quantify particle flux (biodeposition rates and sediment erosion) for an intertidal mudflat in relation to changes in current velocity and benthic macrofauna / Geological Society, London, Special Publications, 139:85-97, doi:10.1144/GSL.SP.1998.139.01.07 --- K. H. Wiltshire, T. Tolhurst, D. M. Paterson, I. Davidson, and G. Gust: Pigment fingerprints as markers of erosion and changes in cohesive sediment surface properties in simulated and natural erosion events / Geological Society, London, Special Publications, 139:99-114, doi:10.1144/GSL.SP.1998.139.01.08 --- J. T. Davey and V. A. Partridge: The macrofaunal communities of the Skeffling muds (Humber estuary), with special reference to bioturbation / Geological Society, London, Special Publications, 139:115-124, doi:10.1144/GSL.SP.1998.139.01.09 --- Graham J. C. Underwood and David J. Smith: In situ measurements of exopolymer production by intertidal epipelic diatom-dominated biofilms in the Humber estuary / Geological Society, London, Special Publications, 139:125-134, doi:10.1144/GSL.SP.1998.139.01.10 --- G. Ruddy, C. M. Turley, and T. E. R. Jones: Ecological interaction and sediment transport on an intertidal mudflat I. Evidence for a biologically mediated sediment-water interface / Geological Society, London, Special Publications, 139:135-148, doi:10.1144/GSL.SP.1998.139.01.11 --- G. Ruddy, C. M. Turley, and T. E. R. Jones: Ecological interaction and sediment transport on an intertidal mudflat II. An experimental dynamic model of the sediment-water interface / Geological Society, London, Special Publications, 139:149-166, doi:10.1144/GSL.SP.1998.139.01.12 --- R. G. Wood, K. S. Black, and C. F. Jago: Measurements and preliminary modelling of current velocity over an intertidal mudflat, Humber estuary, UK / Geological Society, London, Special Publications, 139:167-175, doi:10.1144/GSL.SP.1998.139.01.13 --- Generic Studies --- Hugo N. Rodriguez and Ashish J. Mehta: Considerations on wave-induced fluid mud streaming at open coasts / Geological Society, London, Special Publications, 139:177-186, doi:10.1144/GSL.SP.1998.139.01.14 --- W. T. B. Van Der Lee: The impact of fluid shear and the suspended sediment concentration on the mud floc size variation in the Dollard estuary, The Netherlands / Geological Society, London, Special Publications, 139:187-198, doi:10.1144/GSL.SP.1998.139.01.15 --- Ole Mikkelsen and Morten Pejrup: Comparison of flocculated and dispersed suspended sediment in the Dollard estuary / Geological Society, London, Special Publications, 139:199-209, doi:10.1144/GSL.SP.1998.139.01.16 --- R. J. Uncles, J. A. Stephens, and C. Harris: Seasonal variability of subtidal and intertidal sediment distributions in a muddy, macrotidal estuary: the Humber-Ouse, UK / Geological Society, London, Special Publications, 139:211-219, doi:10.1144/GSL.SP.1998.139.01.17 --- N. M. Ryan and J. A. G. Cooper: Spatial variability of tidal flats in response to wave exposure: examples from Strangford Lough, Co. Down, Northern Ireland / Geological Society, London, Special Publications, 139:221-230, doi:10.1144/GSL.SP.1998.139.01.18 --- Bart A. Kornman and Eric M. G. T. De Deckere: Temporal variation in sediment erodibility and suspended sediment dynamics in the Dollard estuary / Geological Society, London, Special Publications, 139:231-241, doi:10.1144/GSL.SP.1998.139.01.19 --- Andrew B. Cundy, Philip E. F. Collins, Simon D. Turner, Ian W. Croudace, and David Horne: 100 years of environmental change in a coastal wetland, Augusta Bay, southeast Sicily: evidence from geochemical and palaeoecological studies / Geological Society, London, Special Publications, 139:243-254, doi:10.1144/GSL.SP.1998.139.01.20 --- Richard J. S. Whitehouse and Helen J. Mitchener: Observations of the morphodynamic behaviour of an intertidal mudflat at different timescales / Geological Society, London, Special Publications, 139:255-271, doi:10.1144/GSL.SP.1998.139.01.21 --- J. Hull and R. Nunny: Mapping intertidal sediment distributions using the RoxAnn System, Dornoch Firth, NE Scotland / Geological Society, London, Special Publications, 139:273-282, doi:10.1144/GSL.SP.1998.139.01.22 --- R. Riethmüller, J. H. M. Hakvoort, M. Heineke, K. Heymann, H. Kühl, and G. Witte: Relating erosion shear stress to tidal flat surface colour / Geological Society, London, Special Publications, 139:283-293, doi:10.1144/GSL.SP.1998.139.01.23 --- T. F. Sutherland, C. L. Amos, and J. Grant: The erosion threshold of biotic sediments: a comparison of methods / Geological Society, London, Special Publications, 139:295-307, doi:10.1144/GSL.SP.1998.139.01.24 --- Masroor A. Shaikh, Azra Meadows, and Peter S. Meadows: Biological control of avalanching and slope stability in the intertidal zone / Geological Society, London, Special Publications, 139:309-329, doi:10.1144/GSL.SP.1998.139.01.25 --- Peter S. Meadows, Azra Meadows, Fraser J. C. West, Peter S. Shand, and Masroor A. Shaikh: Mussels and mussel beds (Mytilus edulis) as stabilizers of sedimentary environments in the intertidal zone / Geological Society, London, Special Publications, 139:331-347, doi:10.1144/GSL.SP.1998.139.01.26 --- Peter S. Meadows, John M. H. Murray, Azra Meadows, David Muir Wood, and Fraser J. C. West: Microscale biogeotechnical differences in intertidal sedimentary ecosystems / Geological Society, London, Special Publications, 139:349-366, doi:10.1144/GSL.SP.1998.139.01.27 --- Azra Meadows, Peter S. Meadows, and Pat McLaughlin: Spatial heterogeneity in an intertidal sedimentary environment and its macrobenthic community / Geological Society, London, Special Publications, 139:367-388, doi:10.1144/GSL.SP.1998.139.01.28 --- L. A. Boorman, A. Garbutt, and D. Barratt: The role of vegetation in determining patterns of the accretion of salt marsh sediment / Geological Society, London, Special Publications, 139:389-399, doi:10.1144/GSL.SP.1998.139.01.29
    Pages: Online-Ressource (IX, 409 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1862390134
    URL: http://sp.lyellcollection.org/content/139/1
    Language: English
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    E-BOOK
  • 2
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    Parameterising resuspension in aquaculture waste deposition modelling (2020)
    Inter-Research
    Details
    Publication Date: 2020-09-24
    Description: Sustainable expansion of global aquaculture depends on a thorough understanding of environmental impacts. Open-water culture operations produce waste food and faeces, the benthic impacts of which are a focus of regulation. Seabed interactions of wastes are complex, depending on current velocity, seabed substrate and waste material characteristics. The accuracy achieved in modelling intensity and spatial extent of impacts is contingent upon the representation of this interaction and its implications for resuspension. We used benthic flumes to study resuspension processes at 11 salmon aquaculture sites, covering a range of sediment types. Erosion rates and critical entrainment stress were computed at the cage edge and between 100 and 500 m away, characterising seabed erodibility in highly impacted and less impacted sediments. Heavily impacted cage-edge sediments had an erosion threshold (mean 0.02 N m-2) that was an order of magnitude lower, and markedly less heterogeneous, than that of nearby less impacted sediments (mean across sites 0.19 N m-2). This likely reflects a seabed which was smothered by waste material close to the depositional centre. Further out, the covering of waste material is less continuous, thinner, and more admixed with underlying sediments. Bed erosion rates were found to be a linear function of excess stress. The results provide important information on how benthic flumes can be deployed to collect spatial and temporal data for parameterisation of erosion and entrainment processes in numerical waste transport simulation models such as DEPOMOD, and the comparatively large field-based dataset should contribute to the goal of allowing a more realistic representation of particulate waste in these models.
    Print ISSN: 1869-215X
    Electronic ISSN: 1869-7534
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Inter-Research
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    PAPER CURRENT
  • 3
    Electronic Resource
    Electronic Resource
    Secondary Kinetic Isotope Effects of Diastereotopic Protons in Pericyclic Reactions: A New Mechanistic Probe (1995)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 117 (1995), S. 8594-8599 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00138a015
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  • 4
    Electronic Resource
    Electronic Resource
    Reef coral reproduction in the eastern Pacific: Costa Rica, Panamá, and Galápagos Islands (Ecuador). III. Agariciidae (Pavona gigantea and Gardineroseris planulata) (1996)
    Springer
    Marine biology 125 (1996), S. 579-601 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The reproductive ecology of Pavona gigantea Verrill and Gardineroseris planulata (Dana) was investigated in the equatorial eastern Pacific region from 1985 to 1994. These zooxanthellate scleractinian corals were adversely affected in this region during the 1982–1983 El Niño warming event. Both species were hermaphroditic, with individual colonies showing sequential cosexual development, thus resulting in dominantly outbreeding reproduction. Sexuality was mixed, with high percentages of gonochoric and hermaphroditic colonies in both species. Approximately 1:1 male-to-female gonad ratios were found in gonochoric and hermaphroditic colonies combined. Broadcast spawning was observed in P. gigantea in the Galápagos Islands, and the sudden disappearance of mature gametes and the presence of spent gonads suggest that G. planulata is also a broadcast spawner. Colonies of both species with ≲200 cm2 (10 cm diam) live tissue were nonreproductive. Estimated ages of the youngest reproductive colonies were 11 yr for P. gigantea and 20 yr for G. planulata. The percentage of all colonies of P. gigantea with gonads at nonupwelling sites (Caño Istand, Costa Rica and Uva Island, Panamá) ranged from 37 to 47%, respectively; colonies with gonads from upwelling environments (Saboga and Taboga Islands, Panamá) ranged from 31 to 39%, respectively, and reproductively active colonies from the thermally variable Galápagos islands comprised 40% of the collections. Compared with P. gigantea, the numbers of sexually active G. planulata colonies were roughly onehalf at nonupwelling Caño Island (20%) and Uva Island (25%) sites, or less (10%) at the upwelling Saboga Island site. Peak reproductive activity in P. gigantea occurred during the rainy season at all study sites. In the nonupwelling Costa Rican (Caño Island) and Panamainan (Uva Island) sites, mean monthly sea-surface temperatures (SSTs) were high (28 to 29°C), but slightly lower than in the dry season (29°C). In the upwelling Gulf of Panamá (Saboga and Taboga Islands), reproduction occurred after mean monthly SSTs increased from 24 to 28–29°C. In the Galápagos Islands, reproductive activity peaked during sea warming, when mean monthly SSTs reached 25°C. Sexually active colonies of G. planulata, present only at the main collection sites of Caño and Uva Islands, were also observed during the wet season. The presence of mature or spawned gonalds in both species mostly around new and full lunar phases suggests that spawning is at least weakly synchronized with moon phase. Fecundity estimates disclosed the following nonsignificant differences between sites for P. gigantea, expressed as egg production cm-2 colony surface surface yr-1: Galápagos (10 300 to 30 800), Uva Island (4900 to 9800), Caño Island (1800 to 7400), Saboga Island (600 to 1300) Taboga Island (1200 to 2400). Fecundity estimates for G. planulata were considerably lower: Uva Island (700 to 1400), Caño Island (500 to 1000). The sexual recruitment of P. gigantea into El Niño-Southern Oscillation (ENSO) 1982–1983-disturbed, equatorial eastern Pacific coral communities has been low, with only moderate recovery evident since 1983. G. planulata has revealed no sexual recruitment where seed populations are absent or rare (Caño Island, Galápagos Islands), and only low recruitment (Panamá) in areas with colonies that survived the ENSO disturbance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00353270
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  • 5
    Electronic Resource
    Electronic Resource
    EFFECT OF BLANCH TREATMENT ON QUALITY ATTRIBUTES OF CANNED DRY PINTO AND SMALL AND LARGE LIMA BEANS (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 45 (1980), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Two lots of three canned dry bean types were treated as follows: no blanch, two water, and two steam blanch methods (cooled or not cooled after blanching) in order to assess treatment effect on quality attributes after 1 day and 1 mo storage. Storage times did not affect drained weights, but the not blanched and not cooled samples were significantly higher in drained weights than the samples cooled after blanching. The blanch method and post-blanch treatment had significant effects, which varied between bean types, on drained weight, shear values and percent split beans, but not on moisture content. The lot had a significant effect on all quality attributes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1980.tb07457.x
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  • 6
    Electronic Resource
    Electronic Resource
    Determining sediment properties around a marine cage farm using acoustic ground discrimination: RoxAnnTM (1999)
    Oxford, UK : Blackwell Science Ltd
    Aquaculture research 30 (1999), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Sediment traps collected significant quantities of waste solids beneath marine fish cages at a fish farm site in Greece. Diver observation and the absence of dissolved hydrogen sulphide in the water overlying sediments revealed low benthic impacts despite the very low current speeds measured. An acoustic bottom discrimination system, ground-truthed by conventional remote photography, further confirmed the apparently low benthic impact at this site. These results may be explained partly by the large number of fish present around the cages feeding on farm wastes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2109.1999.00351.x
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  • 7
    Electronic Resource
    Electronic Resource
    The potential of Arctic charr, Salvelinus alpinus (L.), for mariculture (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 29 (1998), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: There would appear to be considerable potential for Arctic charr, Salvelinus alpinus (L.), to be cultured in marine conditions in countries where coastal winter salinity is below oceanic, and temperatures remain above freezing. Sea lochs on the west coast of Scotland represent one such environment where freshwater run-off leads to depressed salinities (20-30 practical salinity units) and the North Atlantic Drift leads to winter sea water temperatures typically around 6-8oC.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2109.1998.00929.x
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  • 8
    Electronic Resource
    Electronic Resource
    The influence of arbuscular mycorrhizal colonization and environment on root development in soil (2003)
    Oxford, UK : Blackwell Science Ltd
    European journal of soil science 54 (2003), S. 0 
    Details
    ISSN: 1365-2389
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The production of fine roots is one of the principal means by which carbon, fixed during photosynthesis, enters the soil, and quantifying the production for particular combinations of environmental and biotic factors is important for predicting the sequestration of carbon in the soils of grassland ecosystems. Arbuscular mycorrhizal fungi (AMF) can have a major effect on the production of roots, and we studied how colonization by AMF affects the lifespan of roots. Twenty per cent of control roots of Trifolium repens survived for longer than 42 days whereas 37% survived that long in AMF-colonized plants. The overall survival of the roots of Lolium perenne was less than in T. repens: around 10% of roots survived beyond 42 days and this was not affected by AMF colonization. Previous studies have shown that lifespans of roots can be affected by temperature. We tested the hypothesis that these observations are linked to a change in the morphology of the root system caused by temperature and also by AMF. We found that inoculation with AMF in a microcosm study using Plantago lanceolata grown at various temperatures, with and without AMF, showed no clear effect of AMF on branching patterns. Temperature had a significant effect on total lengths, numbers and branching rates of some higher orders of roots. Total lengths of both secondary and tertiary roots grown at 27°C were about double those of plants grown at 15°C. Colonization by AMF tended to reduce this effect. Evidently the effect of colonization by AMF on root lifespan depends on the species. Increased branching, and thus a greater proportion of ephemeral roots, was responsible for shortening the lives of the roots at increased temperature, which suggests a strong link between lifespan and morphology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1351-0754.2003.0565.x
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of mycorrhizal-enhanced leaf phosphate status on carbon partitioning, translocation and photosynthesis in cucumber (2000)
    Oxford, UK : Blackwell Science Ltd
    Plant, cell & environment 23 (2000), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: An assessment of the effects of arbuscular mycorrhizal (AM) infection on photosynthesis, carbon (C) allocation, translocation and biomass production of cucumber, grown in sand culture, was made using a previously determined phosphorus (P) supply (0·13 mol m−3 P) which had a significant impact on AM infection. Separation of a direct effect of AM infection from an indirect one due to an enhanced leaf P status was achieved using a comparable non-mycorrhizal treatment (NAM + P) supplemented with extra P (0·19 mol m−3 P). Total leaf P concentration, specific leaf mass, photosynthetic capacity, and incorporation of 14C into non-structural carbohydrate pools were dependent on leaf age. Both maximum and ambient photosynthetic rates were significantly higher in the youngest fully expanded leaves from AM and NAM + P plants which also had the higher leaf P concentrations. There were no differences in the total concentrations of starch, sucrose, raffinose or stachyose in young or old leaves among AM, non-mycorrhizal (NAM) and NAM + P treatments. However, younger leaves of NAM plants showed a shift in 14C-partitioning from stachyose and raffinose synthesis to starch accumulation. Determination of ADP-glucose pyrophosphorylase (AGPase), sucrose synthase and sucrose phosphate synthase enzyme activities revealed that only AGPase activity was correlated with the increased incorporation rate of 14C into starch in young leaves of NAM plants. Although there were significant AM-specific effects on C translocation to the root system, AM plants had similar rate of photosynthesis to NAM + P plants. These results suggest that the increase in photosynthetic rate in leaves of AM-infected cucumber was due to an increased P status, rather than a consequence of a mycorrhizal ‘sink’ for assimilates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3040.2000.00598.x
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  • 10
    Electronic Resource
    Electronic Resource
    Sea Carousel-A benthic, annular flume
    Amsterdam : Elsevier
    Estuarine, Coastal and Shelf Science 34 (1992), S. 557-577 
    Details
    ISSN: 0272-7714
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Geography , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0272-7714(05)80062-9
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