Analyses of a sediment core from Highstead Swamp in southwestern Connecticut, USA, reveal Lateglacial and early Holocene ecological and hydrological changes. Lateglacial pollen assemblages are dominated by Picea and Pinus subg. Pinus, and the onset of the Younger Dryas (YD) cold interval is evidenced by higher abundance of Abies and Alnus viridis subsp. crispa. As climate warmed at the end of t...

We say θ is strict if ∆θ(H) > 0 for all ∅ ⊂ H ⊂ G. • Xθ is the random subgraph of G↑n where, independently for each {v(i), w(j)} ∈ E(G↑n), P[ {v, w} ∈ E(Xθ) ] = n−θ({v,w}). We have E[ subH(Xθ) ] = n ∆θ(H). If θ is strict, then subG(Xθ) is asymptotically Poisson(1) and subH(Xθ) is highly concentration around its mean for all ∅ ⊂ H ⊂ G. Convention. In the context of lower bounds for SUB(G), the a...

Passiflora subgenus Astrophea is one of the five recognised subgenera of Passiflora. Brazil presents ca. 26 species of this subgenus with the majority distributed in the Amazon Basin. During the ongoing taxonomic revision of the Brazilian species of subg. Astrophea, seven species previously unknown for the country were recorded: Passiflora amoena, P. fuchsiiflora, P. jussieui, P. ovata, P. plum...

Even after decades of investigation using multiple sources of evidence, the natural histories of some species remain unclear (i.e. cryptogenic). A key example is Littorina littorea, the most abundant intertidal snail in northeastern North America. Native to Europe, the snail's ecological history in North America has been debated for over 100 years with no definitive resolution. To resolve its c...

During a research project aimed at the study of the Culicinae fauna of Gabon and carried out in the National Park of La Lopé, we captured an unknown sandfly male specimen (genus Phlebotomus) by CDC miniature light trap belonging to a new species for Science. Furthermore, the originality of his genitalia does not allow us to include this species in one of the existing subgenus, thus in this pape...

This study describes a new subgenus of miniature, progenetic Rhamphobrachium species from eastern Australia. Minibrachium, n. subg. is characterised by such paedomorphic features as lack of peristomial cirri and branchiae, possession of only two pairs of modified parapodia with spiny recurved hooks and very early onset of subacicular hooks. Three new species are described, of which at least R. ...

In 1973, P. Erd6s conjectured tha t for each k ~ 2 , there exists a cons tan t ck so that if G is a g raph on n vertices and G has no odd cycle with length less than ckn ~/k, then the chromat ic n u m b e r o f G is at mos t k + 1. Cons t ruc t ions due to LovAsz and Schriver show that ck, if it exists, mus t be at least 1. In this paper we settle Erd6s ' conjecture in the affirmative. We actua...

<em>Amanita indogrisea</em> is described here as a new species from coniferous forests in the Union Territory of Jammu and Kashmir, India based on morpho-anatomy molecular data. This characterized by its small to medium-sized basidiomata, ash grey lilac-grey pileal surface with greyish brown pulverulent-floccose felted veil remnants, greyish-white stipes ovoid ellipsoid basal bulb, ...