TY - JOUR A1 - Frieß, Nina A. T1 - "From Russia with Blood". Stalinist Repression an the Gulag in Contemporary Crime Fiction JF - (Hi-)Stories of the Gulag : fiction and reality Y1 - 2016 SN - 978-3-8253-6534-9 SP - 281 EP - 302 ER - TY - JOUR A1 - Liebig, Ferenc A1 - Sarhan, Radwan Mohamed A1 - Prietzel, Claudia Christina A1 - Reinecke, Antje A1 - Koetz, Joachim T1 - "Green" gold nanotriangles: synthesis, purification by polyelectrolyte/micelle depletion flocculation and performance in surface-enhanced Raman scattering JF - RSC Advances N2 - The aim of this study was to develop a one-step synthesis of gold nanotriangles (NTs) in the presence of mixed phospholipid vesicles followed by a separation process to isolate purified NTs. Negatively charged vesicles containing AOT and phospholipids, in the absence and presence of additional reducing agents (polyampholytes, polyanions or low molecular weight compounds), were used as a template phase to form anisotropic gold nanoparticles. Upon addition of the gold chloride solution, the nucleation process is initiated and both types of particles, i.e., isotropic spherical and anisotropic gold nanotriangles, are formed simultaneously. As it was not possible to produce monodisperse nanotriangles with such a one-step procedure, the anisotropic nanoparticles needed to be separated from the spherical ones. Therefore, a new type of separation procedure using combined polyelectrolyte/micelle depletion flocculation was successfully applied. As a result of the different purification steps, a green colored aqueous dispersion was obtained containing highly purified, well-defined negatively charged flat nanocrystals with a platelet thickness of 10 nm and an edge length of about 175 nm. The NTs produce promising results in surface-enhanced Raman scattering. Y1 - 2016 U6 - https://doi.org/10.1039/c6ra04808k SN - 2046-2069 VL - 6 SP - 33561 EP - 33568 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Wiese, Heike A1 - Pohle, Maria T1 - "I go to the Cinema" or" to the Cinema"? Restrictions of Usage of noncanonical Local Data JF - Zeitschrift für Sprachwissenschaft N2 - Study 1 targets grammatical restrictions, based on a corpus of peer group conversations among adolescents. We show that noncanonical variants have the form of bare NPs with or without preposition and appear in both multilingual and monolingual speech communities, following the same syntactic and semantic patterns. While there is a quantitative advantage for the multilingual group, noncanonical variants generally constitute only a minority compared to canonical full PP[DP]. Study 2 targets usage restrictions across communicative situations, based on a corpus of elicited productions by adolescents from a multilingual urban neighbourhood. Comparisons show significantly more noncanonical local expressions in informal, peer-group situations than in formal ones for both spoken and written modes. Taken together, results indicate a selective, grammatically restricted and register-bound choice of noncanonical local expressions. KW - Kiezdeutsch KW - bare local expressions KW - prepositions KW - repertoire KW - register competence KW - Standard German Y1 - 2016 U6 - https://doi.org/10.1515/zfs-2016-0012 SN - 0721-9067 SN - 1613-3706 VL - 35 SP - 171 EP - 216 PB - De Gruyter Mouton CY - Berlin ER - TY - JOUR A1 - Magagna, Tony R. T1 - "Say It Right, Say It Correct": Documenting the American West in The Laramie Project JF - Western American Literature Y1 - 2016 SN - 0043-3462 SN - 1948-7142 VL - 51 SP - 199 EP - 229 PB - Utha State University CY - Logan ER - TY - JOUR A1 - Possamai, Adam A1 - Turner, Bryan S. A1 - Roose, Joshua M. A1 - Dagistanli, Selda A1 - Voyce, Malcolm T1 - "Shari'a" in Cyberspace. A Case Study from Australia JF - Sociologica : Italian Journal of Sociology online N2 - New forms of communication and greater accessibility of Islamic texts on-line allow Muslims to shape their own religiosity, to become less dependent on established sources of authority, and thereby to become more aware of their own cultural diversity as a community. New practices of transnational Islam, and the growth of new concepts of Muslim identities currently emerging in the on-line community, are relatively free from immediate constraints. This article provides the result of a sociological analysis of three Internet sites in Sydney which deliver on-line fatwas. Even if cyberspace has allowed the Muslim world to be de-territorialised and provides a way for people to distance themselves from traditional communities if they wish, this research points out a variety of approaches, including one case which is aiming at re-localising an Australian Muslim system of values. This case highlights ways in which first generation Muslims are re-territorialising Shari'a in a specific western country. KW - Shari'a KW - Fatwas KW - Cyberspace KW - De-territorialisation Process Y1 - 2016 U6 - https://doi.org/10.2383/83882 SN - 1971-8853 VL - 63 SP - 143 EP - 159 PB - Società editrice il Mulino CY - Bologna ER - TY - JOUR A1 - Wels, Ulrike T1 - "Weakness" and "Imprudence": Premonitions of anthropological Narrative JF - Daphnis : Zeitschrift für mittlere deutsche Literatur N2 - The article offers a rereading of Sibylla Schwarz’s prose eclogue, Faunus. By describing the circumstances and the development of a young love in detail, Schwarz directs the reader’s attention to the fact, that Christian moral and ethical standards are external, and, therefore, are to be rejected. Instead, she places the ‘anthropological’ dimension in the foreground, the interest in human beings and their emotional motivations. Affective control and adaptation to conventions are less important. In that regard, this short text can be seen as an integral part of a prehistory of ‘literary anthropology,’ which ultimately evolved only in the course of the 18th century, although, as will be shown, its precursors can already be found in the 17th century. KW - Schäferroman KW - anthropologische Wende KW - antropologie KW - Moraldidaxe KW - pastorale Liebeserzählung KW - Blödigkeit Y1 - 2016 U6 - https://doi.org/10.1163/18796583-04401002 SN - 0300-693X SN - 1879-6583 VL - 44 SP - 44 EP - 69 PB - Editions Rodopi BV CY - Amsterdam ER - TY - JOUR A1 - Paz, Cristian A1 - Becerra, Jose A1 - Silva, Mario A1 - Cabrera-Pardo, Jaime A1 - Burgos, Viviana A1 - Heydenreich, Matthias A1 - Schmidt, Bernd T1 - (-)-8-Oxohobartine a New Indole Alkaloid from Aristotelia chilensis (Mol.) Stuntz JF - Records of Natural Products N2 - The fruit of Aristotelia chilensis is considered a "super fruit" due to its high concentration of polyphenols displaying exceptional antioxidant capacities ORAC. From maqui berries have been reported several anthocyanins and glycosylated flavonoids, those benefits increase the attention to restudy the plant. From the leaves of A. chilensis several indole alkaloids have been reported, we in addition to aristoteline, aristone, aristoquinoline and 3-fromylindole report the spectroscopic elucidation of 8-oxo-9-dehydromakomakine (1), hobartine (2) and a new alkaloid named 8-oxohobartine (3). Compound 1 to 3 did not show bactericidal activity against E. coli and S. aureus till 200 mu g. KW - Aristotelia chilensis KW - indole alkaloids KW - 8-oxohobartine Y1 - 2016 SN - 1307-6167 VL - 10 SP - 68 EP - 73 PB - ACG Publications CY - Gebze-Kocaeli ER - TY - JOUR A1 - Bois, Juliana A1 - Körzdörfer, Thomas T1 - 0 How Bond Length Alternation and Thermal Disorder Affect the Optical Excitation Energies of pi-Conjugated Chains: A Combined Density Functional Theory and Molecular Dynamics Study JF - Journal of chemical theory and computation N2 - We dissect the sources of error leading to inaccuracies in the description of the geometry and optical excitation energies of pi-conjugated polymers. While the ground-state bond length alternation is shown to be badly reproduced by standard functionals, the recently adapted functionals PBEh* and omega PBE* as well as the double hybrid functional XYGJ-OS manage to replicate results obtained at the CCSD(T) level. By analysis of the bond length alternation in the excited state, a sensitive dependence of the exciton localization on the long-range behavior of the functional and the amount of Hartree-Fock exchange present is shown. Introducing thermal disorder through molecular dynamics simulations allows the consideration of a range of thermally accessible configurations of each oligomer, including trans to cis rotations, which break the conjugation of the backbone. Thermal disorder has a considerable effect when combined with functionals that overestimate the delocalization of the excitation, such as B3LYP. For functionals with a larger amount of exact exchange such as our PBEh* and omega PBE*, however, the effect is small, as excitations are often localized enough to fit between twists in the chain. Y1 - 2016 U6 - https://doi.org/10.1021/acs.jctc.5b01070 SN - 1549-9618 SN - 1549-9626 VL - 12 SP - 1872 EP - 1882 PB - American Chemical Society CY - Washington ER - TY - JOUR A1 - Guillemoteau, Julien A1 - Simon, Francois-Xavier A1 - Lück, Erika A1 - Tronicke, Jens T1 - 1D sequential inversion of portable multi-configuration electromagnetic induction data JF - Near surface geophysics N2 - We present an algorithm that performs sequentially one-dimensional inversion of subsurface magnetic permeability and electrical conductivity by using multi-configuration electromagnetic induction sensor data. The presented method is based on the conversion of the in-phase and out-of-phase data into effective magnetic permeability and electrical conductivity of the equivalent homogeneous half-space. In the case of small-offset systems, such as portable electromagnetic induction sensors, for which in-phase and out-of-phase data are moderately coupled, the effective half-space magnetic permeability and electrical conductivity can be inverted sequentially within an iterative scheme. We test and evaluate the proposed inversion strategy using synthetic and field examples. First, we apply it to synthetic data for some highly magnetic environments. Then, the method is tested on real field data acquired in a basaltic environment to image a formation of archaeological interest. These examples demonstrate that a joint interpretation of in-phase and out-of-phase data leads to a better characterisation of the subsurface in magnetic environments such as volcanic areas. Y1 - 2016 U6 - https://doi.org/10.3997/1873-0604.2016029 SN - 1569-4445 SN - 1873-0604 VL - 14 SP - 423 EP - 432 PB - Wiley-VCH CY - Houten ER - TY - JOUR A1 - Baes, Marzieh A1 - Gerya, Taras V. A1 - Sobolev, Stephan Vladimir T1 - 3-D thermo-mechanical modeling of plume-induced subduction initiation JF - Earth & planetary science letters N2 - Here, we study the 3-D subduction initiation process induced by the interaction between a hot thermochemical mantle plume and oceanic lithosphere using thermo-mechanical viscoplastic finite difference marker-in-cell models. Our numerical modeling results show that self-sustaining subduction is induced by plume-lithosphere interaction when the plume is sufficiently buoyant, the oceanic lithosphere is sufficiently old and the plate is weak enough to allow the buoyant plume to. pass through it. Subduction initiation occurs following penetration of the lithosphere by the hot plume and the downward displacement of broken, nearly circular segments of lithosphere (proto-slabs) as a result of partially molten plume rocks overriding the proto-slabs. Our experiments show four different deformation regimes in response to plume-lithosphere interaction: a) self-sustaining subduction initiation, in which subduction becomes self-sustaining; b) frozen subduction initiation, in which subduction stops at shallow depths; c) slab break-off, in which the subducting circular slab breaks off soon after formation; and d) plume underplating, in which the plume does not pass through the lithosphere and instead spreads beneath it (i.e., failed subduction initiation). These regimes depend on several parameters, such as the size, composition, and temperature of the plume, the brittle/plastic strength and age of the oceanic lithosphere, and the presence/absence of lithospheric heterogeneities. The results show that subduction initiates and becomes self-sustaining when the lithosphere is older than 10 Myr and the non dimensional ratio of the plume buoyancy force and lithospheric strength above the plume is higher than approximately 2. The outcomes of our numerical experiments are applicable for subduction initiation in the modern and Precambrian Earth and for the origin of plume-related corona structures on Venus. (C) 2016 Elsevier B.V. All rights reserved. KW - subduction initiation KW - mantle plume KW - oceanic lithosphere KW - numerical models Y1 - 2016 U6 - https://doi.org/10.1016/j.epsl.2016.08.023 SN - 0012-821X SN - 1385-013X VL - 453 SP - 193 EP - 203 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Schennen, Stephan A1 - Tronicke, Jens A1 - Wetterich, Sebastian A1 - Allroggen, Niklas A1 - Schwamborn, Georg A1 - Schirrmeister, Lutz T1 - 3D ground-penetrating radar imaging of ice complex deposits in northern East Siberia JF - Geophysics N2 - Ice complex deposits are characteristic, ice-rich formations in northern East Siberia and represent an important part in the arctic carbon pool. Recently, these late Quaternary deposits are the objective of numerous investigations typically relying on outcrop and borehole data. Many of these studies can benefit from a 3D structural model of the subsurface for upscaling their observations or for constraining estimations of inventories, such as the local carbon stock. We have addressed this problem of structural imaging by 3D ground-penetrating radar (GPR), which, in permafrost studies, has been primarily used for 2D profiling. We have used a 3D kinematic GPR surveying strategy at a field site located in the New Siberian Archipelago on top of an ice complex. After applying a 3D GPR processing sequence, we were able to trace two horizons at depths below 20 m. Taking available borehole and outcrop data into account, we have interpreted these two features as interfaces of major lithologic units and derived a 3D cryostratigraphic model of the subsurface. Our data example demonstrated that a 3D surveying and processing strategy was crucial at our field site and showed the potential of 3D GPR to image geologic structures in complex ice-rich permafrost landscapes. Y1 - 2016 U6 - https://doi.org/10.1190/GEO2015-0129.1 SN - 0016-8033 SN - 1942-2156 VL - 81 SP - WA195 EP - WA202 PB - Society of Exploration Geophysicists CY - Tulsa ER - TY - JOUR A1 - Arslan, Seçkin A1 - Bamyaci, Elif A1 - Bastiaanse, Roelien T1 - A characterization of verb use in Turkish agrammatic narrative speech JF - Philosophische Rundschau N2 - This study investigates the characteristics of narrative-speech production and the use of verbs in Turkish agrammatic speakers (n = 10) compared to non-brain-damaged controls (n = 10). To elicit narrative-speech samples, personal interviews and storytelling tasks were conducted. Turkish has a large and regular verb inflection paradigm where verbs are inflected for evidentiality (i.e. direct versus indirect evidence available to the speaker). Particularly, we explored the general characteristics of the speech samples (e.g. utterance length) and the uses of lexical, finite and non-finite verbs and direct and indirect evidentials. The results show that speech rate is slow, verbs per utterance are lower than normal and the verb diversity is reduced in the agrammatic speakers. Verb inflection is relatively intact; however, a trade-off pattern between inflection for direct evidentials and verb diversity is found. The implications of the data are discussed in connection with narrative-speech production studies on other languages. KW - Agrammatism KW - discourse-linking KW - finiteness KW - evidentiality KW - narrative speech KW - Turkish KW - verbs Y1 - 2016 U6 - https://doi.org/10.3109/02699206.2016.1144224 SN - 0269-9206 SN - 1464-5076 VL - 30 SP - 449 EP - 469 PB - J. C. B. Mohr CY - Philadelphia ER - TY - JOUR A1 - Hennemann, Anja T1 - A cognitive-constructionist approach to Spanish creo empty set and creo JF - Folia linguistica KW - Cognitive Construction Grammar KW - parenthetic verbs KW - Spanish KW - corpus analysis KW - quantitativity/qualitativity Y1 - 2016 U6 - https://doi.org/10.1515/flin-2016-0017 SN - 0165-4004 SN - 1614-7308 VL - 50 SP - 449 EP - 474 PB - De Gruyter CY - Berlin ER - TY - JOUR A1 - van zanten, Boris T. A1 - Zasada, Ingo A1 - Koetse, Mark J. A1 - Ungaro, Fabrizio A1 - Hafner, Kati A1 - Verburg, Peter H. T1 - A comparative approach to assess the contribution of landscape features to aesthetic and recreational values in agricultural landscapes JF - Ecosystem Services : Science, Policy and Practice N2 - The importance of cultural ecosystem services in agricultural landscapes is increasingly recognized as agricultural scale enlargement and abandonment affect aesthetic and recreational values of agricultural landscapes. Landscape preference studies addressing these type of values often yield context-specific outcomes, limiting the applicability of their outcomes in landscape policy. Our approach measures the relative importance of landscape features across agricultural landscapes. This approach was applied in the agricultural landscapes of Winterswijk, The Netherlands (n=191) and the Markische Schweiz, Germany (n=113) among visitors in the agricultural landscape. We set up a parallel designed choice experiment, using regionally specific, photorealistic visualizations of four comparable landscape attributes. In the Dutch landscape visitors highly value hedgerows and tree lines, whereas groups of trees and crop diversity are highly valued in the German landscape. Furthermore, we find that differences in relative preference for landscape attributes are, to some extent, explained by socio-cultural background variables such as education level and affinity with agriculture of the visitors. This approach contributes to a better understanding of the cross-regional variation of aesthetic and recreational values and how these values relate to characteristics of the agricultural landscape, which could support the integration of cultural services in landscape policy. (C) 2015 Elsevier B.V. All rights reserved. KW - Cultural ecosystem services KW - Landscape preferences KW - Comparative study KW - Landscape aesthetics KW - Landscape values KW - Agricultural landscape Y1 - 2016 U6 - https://doi.org/10.1016/j.ecoser.2015.11.011 SN - 2212-0416 VL - 17 SP - 87 EP - 98 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Yadavalli, Nataraja Sekhar A1 - Loebner, Sarah A1 - Papke, Thomas A1 - Sava, Elena A1 - Hurduc, Nicolae A1 - Santer, Svetlana T1 - A comparative study of photoinduced deformation in azobenzene containing polymer films JF - Soft matter N2 - In this paper two groups supporting different views on the mechanism of light induced polymer deformation argue about the respective underlying theoretical conceptions, in order to bring this interesting debate to the attention of the scientific community. The group of Prof. Nicolae Hurduc supports the model claiming that the cyclic isomerization of azobenzenes may cause an athermal transition of the glassy azobenzene containing polymer into a fluid state, the so-called photo-fluidization concept. This concept is quite convenient for an intuitive understanding of the deformation process as an anisotropic flow of the polymer material. The group of Prof. Svetlana Santer supports the re-orientational model where the mass-transport of the polymer material accomplished during polymer deformation is stated to be generated by the light-induced re-orientation of the azobenzene side chains and as a consequence of the polymer backbone that in turn results in local mechanical stress, which is enough to irreversibly deform an azobenzene containing material even in the glassy state. For the debate we chose three polymers differing in the glass transition temperature, 32 degrees C, 87 degrees C and 95 degrees C, representing extreme cases of flexible and rigid materials. Polymer film deformation occurring during irradiation with different interference patterns is recorded using a homemade set-up combining an optical part for the generation of interference patterns and an atomic force microscope for acquiring the kinetics of film deformation. We also demonstrated the unique behaviour of azobenzene containing polymeric films to switch the topography in situ and reversibly by changing the irradiation conditions. We discuss the results of reversible deformation of three polymers induced by irradiation with intensity (IIP) and polarization (PIP) interference patterns, and the light of homogeneous intensity in terms of two approaches: the re-orientational and the photo-fluidization concepts. Both agree in that the formation of opto-mechanically induced stresses is a necessary prerequisite for the process of deformation. Using this argument, the deformation process can be characterized either as a flow or mass transport. Y1 - 2016 U6 - https://doi.org/10.1039/c6sm00029k SN - 1744-683X SN - 1744-6848 VL - 12 SP - 2593 EP - 2603 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Patil, Umesh A1 - Hanne, Sandra A1 - Burchert, Frank A1 - De Bleser, Ria A1 - Vasishth, Shravan T1 - A Computational Evaluation of Sentence Processing Deficits in Aphasia JF - Cognitive science : a multidisciplinary journal of anthropology, artificial intelligence, education, linguistics, neuroscience, philosophy, psychology ; journal of the Cognitive Science Society N2 - Individuals with agrammatic Broca's aphasia experience difficulty when processing reversible non-canonical sentences. Different accounts have been proposed to explain this phenomenon. The Trace Deletion account (Grodzinsky, 1995, 2000, 2006) attributes this deficit to an impairment in syntactic representations, whereas others (e.g., Caplan, Waters, Dede, Michaud, & Reddy, 2007; Haarmann, Just, & Carpenter, 1997) propose that the underlying structural representations are unimpaired, but sentence comprehension is affected by processing deficits, such as slow lexical activation, reduction in memory resources, slowed processing and/or intermittent deficiency, among others. We test the claims of two processing accounts, slowed processing and intermittent deficiency, and two versions of the Trace Deletion Hypothesis (TDH), in a computational framework for sentence processing (Lewis & Vasishth, 2005) implemented in ACT-R (Anderson, Byrne, Douglass, Lebiere, & Qin, 2004). The assumption of slowed processing is operationalized as slow procedural memory, so that each processing action is performed slower than normal, and intermittent deficiency as extra noise in the procedural memory, so that the parsing steps are more noisy than normal. We operationalize the TDH as an absence of trace information in the parse tree. To test the predictions of the models implementing these theories, we use the data from a German sentence—picture matching study reported in Hanne, Sekerina, Vasishth, Burchert, and De Bleser (2011). The data consist of offline (sentence-picture matching accuracies and response times) and online (eye fixation proportions) measures. From among the models considered, the model assuming that both slowed processing and intermittent deficiency are present emerges as the best model of sentence processing difficulty in aphasia. The modeling of individual differences suggests that, if we assume that patients have both slowed processing and intermittent deficiency, they have them in differing degrees. KW - Aphasia KW - Non-canonical sentences KW - Sentence-picture matching KW - Eye movements KW - Computational modeling KW - Cognitive architecture KW - Individual differences Y1 - 2016 U6 - https://doi.org/10.1111/cogs.12250 SN - 0364-0213 SN - 1551-6709 VL - 40 SP - 5 EP - 50 PB - Wiley-Blackwell CY - Hoboken ER - TY - JOUR A1 - Dulgheru, Elena T1 - A Conjunction of Mysteries BT - Tarkovskij’s Off ret and da Vinci’s Adoraz ione dei magi JF - Andrej Tarkovskij: Klassiker – Классик – Classic – Classico : Beiträge zum internationalen Tarkovskij-Symposium an der Universität Potsdam ; Band 1 Y1 - 2016 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-95594 SN - 978-3-86956-351-0 SP - 201 EP - 214 PB - Universität Potsdam CY - Potsdam ER - TY - JOUR A1 - Leung, Ray C. H. T1 - A corpus-based analysis of textbooks used in the orientation course for immigrants in Germany: Ideological and pedagogic implications JF - Journal of Language and Cultural Education KW - orientation course KW - immigrants KW - Germany KW - corpus linguistics KW - textbooks KW - ideologies Y1 - 2016 U6 - https://doi.org/10.1515/jolace-2016-0030 SN - 1339-4045 SN - 1339-4584 VL - 4 SP - 154 EP - 177 PB - De Gruyter CY - Berlin ER - TY - JOUR A1 - Wang, Cheng A1 - Yang, Haojin A1 - Meinel, Christoph T1 - A deep semantic framework for multimodal representation learning JF - Multimedia tools and applications : an international journal N2 - Multimodal representation learning has gained increasing importance in various real-world multimedia applications. Most previous approaches focused on exploring inter-modal correlation by learning a common or intermediate space in a conventional way, e.g. Canonical Correlation Analysis (CCA). These works neglected the exploration of fusing multiple modalities at higher semantic level. In this paper, inspired by the success of deep networks in multimedia computing, we propose a novel unified deep neural framework for multimodal representation learning. To capture the high-level semantic correlations across modalities, we adopted deep learning feature as image representation and topic feature as text representation respectively. In joint model learning, a 5-layer neural network is designed and enforced with a supervised pre-training in the first 3 layers for intra-modal regularization. The extensive experiments on benchmark Wikipedia and MIR Flickr 25K datasets show that our approach achieves state-of-the-art results compare to both shallow and deep models in multimodal and cross-modal retrieval. KW - Multimodal representation KW - Deep neural networks KW - Semantic feature KW - Cross-modal retrieval Y1 - 2016 U6 - https://doi.org/10.1007/s11042-016-3380-8 SN - 1380-7501 SN - 1573-7721 VL - 75 SP - 9255 EP - 9276 PB - Springer CY - Dordrecht ER - TY - JOUR A1 - Jambrina-Enriquez, Margarita A1 - Sachse, Dirk A1 - Valero-Garces, Blas L. T1 - A deglaciation and Holocene biomarker-based reconstruction of climate and environmental variability in NW Iberian Peninsula: the Sanabria Lake sequence JF - Journal of paleolimnolog N2 - The molecular biomarker composition of two sediment cores from Sanabria Lake (NW Iberian Peninsula) and a survey of modern plants in the watershed provide a reconstruction of past vegetation and landscape dynamics since deglaciation. During a proglacial stage in Lake Sanabria (prior to 14.7 cal ka BP), very low biomarker concentration and carbon preference index (CPI) values similar to 1 suggest that the n-alkanes could have derived from eroded ancient sediment sources or older organic matter with high degree of maturity. During the Late glacial (14.7-11.7 cal ka BP) and the Holocene (last 11.7 cal ka BP) intervals with higher biomarker and triterpenoid concentrations (high %nC(29) , nC(31) alkanes), higher CPI and average carbon length (ACL), and lower P-aq (proportion of aquatic plants) are indicative of major contribution of vascular land plants from a more forested watershed (e.g. Mid Holocene period 7.0-4.0 cal ka BP). Lower biomarker concentrations (high %nC(27) alkanes), CPI and ACL values responded to short phases with decreased allochthonous contribution into the lake that correspond to centennial-scale periods of regional forest decline (e.g. 4-3 ka BP, Roman deforestation after 2.0 ka, and some phases of the LIA, seventeenth-nineteenth centuries). Human activities in the watershed were significant during early medieval times (1.3-1.0 cal ka BP) and since 1960 CE, in both cases associated with relatively higher productivity stages in the lake (lower biomarker and triterpenoid concentrations, high %nC(23) and %nC(31) respectively, lower ACL and CPI values and higher P-aq). The lipid composition of Sanabria Lake sediments indicates a major allochthonous (watershed-derived) contribution to the organic matter budget since deglaciation, and a dominant oligotrophic status during the lake history. The study constrains the climate and anthropogenic forcings and watershed versus lake sources in organic matter accumulation processes and helps to design conservation and management policies in mountain, oligotrophic lakes. KW - Plant n-alkanes KW - Lipid biomarker KW - Sanabria Lake KW - n-Alkanes KW - Holocene KW - Lateglacial KW - Iberian Peninsula Y1 - 2016 U6 - https://doi.org/10.1007/s10933-016-9890-6 SN - 0921-2728 SN - 1573-0417 VL - 56 SP - 49 EP - 66 PB - Springer CY - Dordrecht ER -