Arctic seabirds and shrinking sea ice: egg analyses reveal the importance of ice-derived resources

In the Arctic, sea-ice plays a central role in the functioning of marine food webs and its rapid shrinking has large effects on the biota. It is thus crucial to assess the importance of sea-ice and ice-derived resources to Arctic marine species. Here, we used a multi-biomarker approach combining Highly Branched Isoprenoids (HBIs) with δ13C and δ15N to evaluate how much Arctic seabirds rely on sea-ice derived resources during the pre-laying period, and if changes in sea-ice extent and duration affect their investment in reproduction. Eg

The political import of deconstruction—Derrida’s limits?: a forum on Jacques Derrida’s specters of Marx after 25 Years, part I

Jacques Derrida delivered the basis of The Specters of Marx: The State of the Debt, the Work of Mourning, & the New International as a plenary address at the conference ‘Whither Marxism?’ hosted by the University of California, Riverside, in 1993. The longer book version was published in French the same year and appeared in English and Portuguese the following year. In the decade after the publication of Specters, Derrida’s analyses provoked a large critical literature and invited both consternation and celebration by figures such as Antonio Negri, Wendy Brown and Frederic Jameson. This forum seeks to stimulate new reflections on Derrida, deconstruction and Specters of Marx by considering how the futures past announced by the book have fared after an eventful quarter century. Maja Zehfuss, Antonio Vázquez-Arroyo and Dan Bulley and Bal Sokhi-Bulley offer sharp, occasionally exasperated, meditations on the political import of deconstruction and the limits of Derrida’s diagnoses in Specters of Marx but also identify possible paths forward for a global politics taking inspiration in Derrida’s work of the 1990s

Extending critical performativity

In this article we extend the debate about critical performativity. We begin by outlining the basic tenets of critical performativity and how this has been applied in the study of management and organization. We then address recent critiques of critical performance. We note these arguments suffer from an undue focus on intra-academic debates; engage in author-itarian theoretical policing; feign relevance through symbolic radicalism; and repackage common sense. We take these critiques as an opportunity to offer an extended model of critical performativity that involves focusing on issues of public importance; engaging with non-academic groups using dialectical reasoning; scaling up insights through movement building; and propagating deliberation

Etudes sur les Podostemopsida. 11. R\ue9partition et \ue9volution des Tristichaceae

Volume: 10Start Page: 223End Page: 26

Etude sur les Podostemales. 10. Structures florales et v\ue9g\ue9tatives des Tristichaceae

Volume: 10Start Page: 179End Page: 21

Etudes sur les Podostemopsida. 12. Biog\ue9ographie \ue9volutive de Tristicha trifaria (Bory ex Willd.) Sprengel

Volume: 11Start Page: 39End Page: 7

Remarques sur une interprétation récente de la lemme des Graminées

Cusset G. Remarques sur une interprétation récente de la lemme des Graminées. In: Journal d'agriculture tropicale et de botanique appliquée, vol. 13, n°4-5, Avril-mai 1966. pp. 233-235

Sur les Jardins botaniques parisiens au XVIe siècle

Cusset G. Sur les Jardins botaniques parisiens au XVIe siècle. In: Journal d'agriculture tropicale et de botanique appliquée, vol. 13, n°8-9, Août-septembre 1966. pp. 385-404