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  • 1
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    Birds and people both depend on China's wetlands (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-07-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cao, Lei -- Fox, Anthony D -- England -- Nature. 2009 Jul 9;460(7252):173. doi: 10.1038/460173b.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19587744" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biodiversity ; *Birds ; China ; Conservation of Natural Resources/*trends ; Water Supply ; *Wetlands
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 2
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    Mutations in the profilin 1 gene cause familial amyotrophic lateral sclerosis (2012)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2012-07-18
    Description: Amyotrophic lateral sclerosis (ALS) is a late-onset neurodegenerative disorder resulting from motor neuron death. Approximately 10% of cases are familial (FALS), typically with a dominant inheritance mode. Despite numerous advances in recent years, nearly 50% of FALS cases have unknown genetic aetiology. Here we show that mutations within the profilin 1 (PFN1) gene can cause FALS. PFN1 is crucial for the conversion of monomeric (G)-actin to filamentous (F)-actin. Exome sequencing of two large ALS families showed different mutations within the PFN1 gene. Further sequence analysis identified 4 mutations in 7 out of 274 FALS cases. Cells expressing PFN1 mutants contain ubiquitinated, insoluble aggregates that in many cases contain the ALS-associated protein TDP-43. PFN1 mutants also display decreased bound actin levels and can inhibit axon outgrowth. Furthermore, primary motor neurons expressing mutant PFN1 display smaller growth cones with a reduced F/G-actin ratio. These observations further document that cytoskeletal pathway alterations contribute to ALS pathogenesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3575525/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3575525/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, Chi-Hong -- Fallini, Claudia -- Ticozzi, Nicola -- Keagle, Pamela J -- Sapp, Peter C -- Piotrowska, Katarzyna -- Lowe, Patrick -- Koppers, Max -- McKenna-Yasek, Diane -- Baron, Desiree M -- Kost, Jason E -- Gonzalez-Perez, Paloma -- Fox, Andrew D -- Adams, Jenni -- Taroni, Franco -- Tiloca, Cinzia -- Leclerc, Ashley Lyn -- Chafe, Shawn C -- Mangroo, Dev -- Moore, Melissa J -- Zitzewitz, Jill A -- Xu, Zuo-Shang -- van den Berg, Leonard H -- Glass, Jonathan D -- Siciliano, Gabriele -- Cirulli, Elizabeth T -- Goldstein, David B -- Salachas, Francois -- Meininger, Vincent -- Rossoll, Wilfried -- Ratti, Antonia -- Gellera, Cinzia -- Bosco, Daryl A -- Bassell, Gary J -- Silani, Vincenzo -- Drory, Vivian E -- Brown, Robert H Jr -- Landers, John E -- 1R01NS050557/NS/NINDS NIH HHS/ -- 1R01NS065847/NS/NINDS NIH HHS/ -- R01 NS050557/NS/NINDS NIH HHS/ -- RC2 NS070342/NS/NINDS NIH HHS/ -- RC2-NS070-342/NS/NINDS NIH HHS/ -- T32 GM007754/GM/NIGMS NIH HHS/ -- U01 NS052225/NS/NINDS NIH HHS/ -- UL1 TR000454/TR/NCATS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2012 Aug 23;488(7412):499-503. doi: 10.1038/nature11280.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22801503" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Amino Acid Sequence ; Amyotrophic Lateral Sclerosis/diagnosis/*genetics/metabolism/*pathology ; Animals ; Axons/metabolism/pathology ; Cells, Cultured ; European Continental Ancestry Group/genetics ; Exome/genetics ; Female ; Genetic Predisposition to Disease/*genetics ; Growth Cones/metabolism ; High-Throughput Nucleotide Sequencing ; Humans ; Jews/genetics ; Male ; Mice ; Models, Molecular ; Molecular Sequence Data ; Motor Neurons/cytology/metabolism ; Mutant Proteins/genetics/*metabolism ; Mutation/*genetics ; Pedigree ; Profilins/*genetics/*metabolism ; Protein Conformation ; Ubiquitination
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 3
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    Ecological dynamics across the Arctic associated with recent climate change (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-09-12
    Description: At the close of the Fourth International Polar Year, we take stock of the ecological consequences of recent climate change in the Arctic, focusing on effects at population, community, and ecosystem scales. Despite the buffering effect of landscape heterogeneity, Arctic ecosystems and the trophic relationships that structure them have been severely perturbed. These rapid changes may be a bellwether of changes to come at lower latitudes and have the potential to affect ecosystem services related to natural resources, food production, climate regulation, and cultural integrity. We highlight areas of ecological research that deserve priority as the Arctic continues to warm.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Post, Eric -- Forchhammer, Mads C -- Bret-Harte, M Syndonia -- Callaghan, Terry V -- Christensen, Torben R -- Elberling, Bo -- Fox, Anthony D -- Gilg, Olivier -- Hik, David S -- Hoye, Toke T -- Ims, Rolf A -- Jeppesen, Erik -- Klein, David R -- Madsen, Jesper -- McGuire, A David -- Rysgaard, Soren -- Schindler, Daniel E -- Stirling, Ian -- Tamstorf, Mikkel P -- Tyler, Nicholas J C -- van der Wal, Rene -- Welker, Jeffrey -- Wookey, Philip A -- Schmidt, Niels Martin -- Aastrup, Peter -- New York, N.Y. -- Science. 2009 Sep 11;325(5946):1355-8. doi: 10.1126/science.1173113.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Penn State University, 208 Mueller Lab, University Park, PA 16802, USA. esp10@psu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19745143" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arctic Regions ; *Climatic Processes ; *Cold Climate ; *Ecosystem ; Greenhouse Effect ; Ice Cover ; *Plant Development ; Population Dynamics ; Research
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of agricultural change on abundance, fitness components and distribution of two arctic-nesting goose populations (2005)
    Oxford, UK : Blackwell Science Ltd
    Global change biology 11 (2005), S. 0 
    Details
    ISSN: 1365-2486
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Geography
    Notes: Intensification of agriculture since the 1950s has enhanced the availability, competitive ability, crude protein content, digestibility and extended growing seasons of forage grasses. Spilled cereal grain also provides a rich food source in autumn and in winter. Long-distance migratory herbivorous geese have rapidly exploited these feeding opportunities and most species have shown expansions in range and population size in the last 50 years. Results of long-term studies are presented from two Arctic-breeding populations, the Svalbard pink-footed goose and the Greenland white-fronted goose (GWFG). GWFGs have shown major habitat shifts since the 1950s from winter use of plant storage organs in natural wetlands to feeding on intensively managed farmland. Declines in local density on, and abandonment of, unmodified traditional wintering habitat and increased reproductive success among those birds wintering on farmland suggest that density-dependent processes were not the cause of the shift in this winter-site-faithful population. Based on enhanced nutrient and energy intake rates, we argue that observed shifts in both species from traditionally used natural habitats to intensively managed farmland on spring staging and wintering areas have not necessarily been the result of habitat destruction. Increased food intake rates and potential demographic benefits resulting from shifts to highly profitable foraging opportunities on increasingly intensively managed farmland, more likely explain increases in goose numbers in these populations. The geographically exploratory behaviour of subdominant individuals enables the discovery and exploitation of new winter feeding opportunities and hence range expansion. Recent destruction of traditional habitats and declines in farming at northern latitudes present fresh challenges to the well being of both populations. More urgently, Canada geese colonizing breeding and moulting habitats of white-fronted geese in Greenland are further affecting their reproductive output.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2486.2005.00941.x
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  • 5
    Electronic Resource
    Electronic Resource
    The effects of simulated spring goose grazing on the growth rate and protein content of Phleum pratense leaves (1998)
    Springer
    Oecologia 116 (1998), S. 154-159 
    Details
    ISSN: 1432-1939
    Keywords: Key wordsPhleum pratense ; Anser albifrons flavirostris ; Grazing ; Overcompensation ; Protein content
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effects of simulated goose grazing on Phleum pratense plants were tested in an Iceland hayfield during the spring goose staging period (19 April–11 May 1997). Plants in an area exclosed from the influence of grazing and the nutrient effects of goose faeces were subject to the removal of the youngest lamina once, three and four times during this period. Clipping three and four times resulted in 25–41% increases in cumulative elongation of youngest laminae compared with unclipped plants. Total cumulative lamina growth of entire plants showed no significant difference between unclipped plants and those clipped three and four times, hence no overcompensation occurred. Sequential clipping elevated the protein content of the youngest laminae from 20% to 27–33%, whereas there was no change amongst shoots clipped only once. Because geese only consume the youngest lamina of each Phleum plant, measurements from this experiment showed that regular physical removal of growing biomass doubled the biomass of preferred tissue available to geese and increased the potential protein intake 3.5 times at experimental clipping frequencies similar to levels of sequential harvesting observed amongst staging geese compared to less frequent harvesting. These increases were achieved without any fertilising effects of goose faeces implicated in such effects in previous studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004420050574
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  • 6
    Electronic Resource
    Electronic Resource
    Food supply and the effects of recreational disturbance on the abundance and distribution of wintering Pochard on a gravel pit complex in southern Britain (1994)
    Springer
    Hydrobiologia 279-280 (1994), S. 253-261 
    Details
    ISSN: 1573-5117
    Keywords: Aythya ferina ; Chara ; recreation ; waterfowl ; disturbance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The Cotswold Water Park, an area of over 100 flooded gravel pits in south central Britain, supports Nationally Important numbers of wintering Pochard Aythya ferina associated with abundant Stoneworts Chara spp. Based on extensive presence/absence data and intensive biomass sampling, the submerged macrophyte communities were surveyed. Charophytes were most frequent and developed highest biomass at water depths below 3 m. Counts of wintering Pochard showed that water-based recreational activity displaced birds from lakes. Analysis of bird density showed significantly higher use of reserves with restricted bankside access than lakes where angling, walking or other bank-side activities were permitted. These in turn supported higher Pochard densities than lakes with water-based recreation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00027859
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  • 7
    Electronic Resource
    Electronic Resource
    Breeding bird communities and environmental variable correlates of Scottish peatland wetlands (1994)
    Springer
    Hydrobiologia 279-280 (1994), S. 297-307 
    Details
    ISSN: 1573-5117
    Keywords: waterfowl ; breeding ; wetlands ; peatlands ; Scotland
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The majority of lochs and water courses in an area of northern Scotland were visited during July 1988. Breeding waterfowl and details of environmental variables were recorded for each site and subjected to multivariate classification techniques. Non-hierarchical classification identified seven habitat types on the basis of environmental parameters. These corresponded well with, and further sub-divided, categorisation using conventional trophic-level habitat type classifications. A hierarchical approach, using TWINSPAN, classified twelve waterfowl groupings based on the presence of indicator species. This approach identified characteristic community types and groupings with high diversity and hence conservation importance. Correspondence between habitat classifications and waterfowl communities was reasonable, but failure to identify key features of wetland complexity was probably the reason for the inability to identify clear relationships. Induction analysis was used to show that waterfowl species with the most restricted distributions characterised the main groupings, with Black-throated Diver and Common Scoter showing preferences for mesotrophic/eutrophic waters with islands, where peaty waters drain onto base-rich sandy substrates. Greylag Geese occurred on large acidic oligotrophic lochs and Wigeon on base-rich streams. The need for catchment-wide site-safeguard and management programmes to safeguard the wetlands of greatest significance is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00027863
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  • 8
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    High-Accuracy Measurement of Atomic Polarizability in an Optical Lattice Clock (2012)
    American Physical Society (APS)
    Details
    Publication Date: 2012-04-14
    Description: Author(s): J. A. Sherman, N. D. Lemke, N. Hinkley, M. Pizzocaro, R. W. Fox, A. D. Ludlow, and C. W. Oates Presently, the Stark effect contributes the largest source of uncertainty in a ytterbium optical atomic clock through blackbody radiation. By employing an ultracold, trapped atomic ensemble and high stability optical clock, we characterize the quadratic Stark effect with unprecedented precision. We ... [Phys. Rev. Lett. 108, 153002] Published Fri Apr 13, 2012
    Keywords: Atomic, Molecular, and Optical Physics
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 9
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    Sensitivity of marine protected area network connectivity to atmospheric variability (2016)
    Royal Society
    Details
    Publication Date: 2016-11-18
    Description: International efforts are underway to establish well-connected systems of marine protected areas (MPAs) covering at least 10% of the ocean by 2020. But the nature and dynamics of ocean ecosystem connectivity are poorly understood, with unresolved effects of climate variability. We used 40-year runs of a particle tracking model to examine the sensitivity of an MPA network for habitat-forming cold-water corals in the northeast Atlantic to changes in larval dispersal driven by atmospheric cycles and larval behaviour. Trajectories of Lophelia pertusa larvae were strongly correlated to the North Atlantic Oscillation (NAO), the dominant pattern of interannual atmospheric circulation variability over the northeast Atlantic. Variability in trajectories significantly altered network connectivity and source–sink dynamics, with positive phase NAO conditions producing a well-connected but asymmetrical network connected from west to east. Negative phase NAO produced reduced connectivity, but notably some larvae tracked westward-flowing currents towards coral populations on the mid-Atlantic ridge. Graph theoretical metrics demonstrate critical roles played by seamounts and offshore banks in larval supply and maintaining connectivity across the network. Larval longevity and behaviour mediated dispersal and connectivity, with shorter lived and passive larvae associated with reduced connectivity. We conclude that the existing MPA network is vulnerable to atmospheric-driven changes in ocean circulation.
    Keywords: oceanography, ecology, environmental science
    Electronic ISSN: 2054-5703
    Topics: Natural Sciences in General
    Published by Royal Society
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  • 10
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    Food supply and the effects of recreational disturbance on the abundance and distribution of wintering Pochard on a gravel pit complex in southern Britain (1994)
    Springer
    Details
    Publication Date: 1994-04-01
    Print ISSN: 0018-8158
    Electronic ISSN: 1573-5117
    Topics: Biology
    Published by Springer
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