TY  - JOUR
A1  - Milinkovitch, M. C.
A1  - Monteyne, D.
A1  - Gibbs, J. P.
A1  - Fritts, T. H.
A1  - Tapia, W.
A1  - Snell, H. L.
A1  - Tiedemann, Ralph
A1  - Caccone, Adalgisa
A1  - Powell, J. R.
T1  - Genetic analysis of a successful repatriation programme : giant Galapagos tortoises
N2  - As natural populations of endangered species dwindle to precarious levels, remaining members are sometimes brought into captivity, allowed to breed and their offspring returned to the natural habitat. One goal of such repatriation programmes is to retain as much of the genetic variation of the species as possible. A taxon of giant GalApagos tortoises on the island of Espahola has been the subject of a captive breeding-repatriation programme for 33 years. Core breeders, consisting of 12 females and three males, have produced more than 1200 offspring that have been released on Espanola where in situ reproduction has recently been observed. Using microsatellite DNA markers, we have determined the maternity and paternity of 132 repatriated offspring. Contributions of the breeders are highly skewed. This has led to a further loss of genetic variation that is detrimental to the long-term survival of the population. Modifications to the breeding programme could alleviate this problem
Y1  - 2004
SN  - 0962-8452
ER  - 
TY  - JOUR
A1  - Müller, Katharina
A1  - Foerstendorf, Harald
A1  - Steudtner, Robin
A1  - Tsushima, Satoru
A1  - Kumke, Michael Uwe
A1  - Lefèvre, Grégory
A1  - Rothe, Jörg
A1  - Mason, Harris
A1  - Szabó, Zoltán
A1  - Yang, Ping
A1  - Adam, Christian K. R.
A1  - André, Rémi
A1  - Brennenstuhl, Katlen
A1  - Chiorescu, Ion
A1  - Cho, Herman M.
A1  - Creff, Gaëlle
A1  - Coppin, Frédéric
A1  - Dardenne, Kathy
A1  - Den Auwer, Christophe
A1  - Drobot, Björn
A1  - Eidner, Sascha
A1  - Hess, Nancy J.
A1  - Kaden, Peter
A1  - Kremleva, Alena
A1  - Kretzschmar, Jerome
A1  - Krüger, Sven
A1  - Platts, James A.
A1  - Panak, Petra
A1  - Polly, Robert
A1  - Powell, Brian A.
A1  - Rabung, Thomas
A1  - Redon, Roland
A1  - Reiller, Pascal E.
A1  - Rösch, Notker
A1  - Rossberg, André
A1  - Scheinost, Andreas C.
A1  - Schimmelpfennig, Bernd
A1  - Schreckenbach, Georg
A1  - Skerencak-Frech, Andrej
A1  - Sladkov, Vladimir
A1  - Solari, Pier Lorenzo
A1  - Wang, Zheming
A1  - Washton, Nancy M.
A1  - Zhang, Xiaobin
T1  - Interdisciplinary Round-Robin Test on molecular spectroscopy of the U(VI) Acetate System
JF  - ACS omega / American Chemical Society
N2  - A comprehensive molecular analysis of a simple aqueous complexing system. U(VI) acetate. selected to be independently investigated by various spectroscopic (vibrational, luminescence, X-ray absorption, and nuclear magnetic resonance spectroscopy) and quantum chemical methods was achieved by an international round-robin test (RRT). Twenty laboratories from six different countries with a focus on actinide or geochemical research participated and contributed to this scientific endeavor. The outcomes of this RRT were considered on two levels of complexity: first, within each technical discipline, conformities as well as discrepancies of the results and their sources were evaluated. The raw data from the different experimental approaches were found to be generally consistent. In particular, for complex setups such as accelerator-based X-ray absorption spectroscopy, the agreement between the raw data was high. By contrast, luminescence spectroscopic data turned out to be strongly related to the chosen acquisition parameters. Second, the potentials and limitations of coupling various spectroscopic and theoretical approaches for the comprehensive study of actinide molecular complexes were assessed. Previous spectroscopic data from the literature were revised and the benchmark data on the U(VI) acetate system provided an unambiguous molecular interpretation based on the correlation of spectroscopic and theoretical results. The multimethodologic approach and the conclusions drawn address not only important aspects of actinide spectroscopy but particularly general aspects of modern molecular analytical chemistry.
Y1  - 2019
U6  - https://doi.org/10.1021/acsomega.9b00164
SN  - 2470-1343
VL  - 4
IS  - 5
SP  - 8167
EP  - 8177
PB  - American Chemical Society
CY  - Washington
ER  - 
TY  - JOUR
A1  - Wainwright, John
A1  - Parsons, Anthony J.
A1  - Mueller, Eva N.
A1  - Brazier, Richard E.
A1  - Powell, D. Mark
T1  - Response to Hairsine's and Sander's 'Comment on "A transport-distance based approach to scaling erosionrates" : parts 1, 2 and 3 by Wainwright et al.'
Y1  - 2009
UR  - http://www3.interscience.wiley.com/cgi-bin/jhome/2388/
U6  - https://doi.org/10.1002/Esp.1781
SN  - 0197-9337
ER  - 
TY  - JOUR
A1  - Wainwright, John
A1  - Parsons, Anthony J.
A1  - Mueller, Eva N.
A1  - Brazier, Richard E.
A1  - Powell, D. Mark
T1  - Response to Kinnell's 'Comment on " A transport-distance approach to scaling erosion rates: III. Evaluating scaling characteristics of MAHLERAN"'
Y1  - 2009
UR  - http://www3.interscience.wiley.com/cgi-bin/jhome/2388/
U6  - https://doi.org/10.1002/Esp.1816
SN  - 0197-9337
ER  - 
TY  - JOUR
A1  - del Papa, C.
A1  - Hongn, Fernando D.
A1  - Powell, J.
A1  - Payrola, P.
A1  - Do Campo, M.
A1  - Strecker, Manfred
A1  - Petrinovic, I.
A1  - Schmitt, A. K.
A1  - Pereyra, R.
T1  - Middle Eocene-Oligocene broken-foreland evolution in the Andean
 Calchaqui Valley, NW Argentina: insights from stratigraphic, structural
 and provenance studies
JF  - BASIN RESEARCH
N2  - Two end-member models have been proposed for the Paleogene Andean foreland: a simple W-E migrating foreland model and a broken-foreland model. We present new stratigraphic, sedimentological and structural data from the Paleogene Quebrada de los Colorados (QLC) Formation, in the Eastern Cordillera, with which to test these two different models. Basin-wide unconformities, growthstrata and changes in provenance indicate deposition of the QLC Formation in a tectonically active basin. Both west- and east-vergent structures, rooted in the basement, controlled the deposition and distribution of the QLC Formation from the Middle Eocene to the Early Miocene. The provenance analysis indicates that the main source areas were basement blocks, like the Paleozoic Oire Eruptive Complex, uplifted during Paleogene shortening, and that delimits the eastern boundary of the present-day intraorogenic Puna plateau. A comparison of the QLC sedimentary basin-fill pattern with those of adjacent Paleogene basins in the Puna plateau and in the Santa Barbara System highlights the presence of discrete depozones. These reflect the early compartmentalization of the foreland, rather than a stepwise advance of the deformation front of a thrust belt. The early Tertiary foreland of the southern central Andes is represented by a ca. 250-km-wide area comprising several deformation zones (Arizaro, Macon, Copalayo and Calchaqui) in which doubly vergent or asymmetric structures, rooted in the basement, were generated. Hence, classical foreland model is difficult to apply in this Paleogene basin; and our data and interpretation agree with a broken-foreland model.
Y1  - 2013
U6  - https://doi.org/10.1111/bre.12018
SN  - 0950-091X
SN  - 1365-2117
VL  - 25
IS  - 5
SP  - 574
EP  - 593
PB  - WILEY-BLACKWELL
CY  - HOBOKEN
ER  -