云南松苗木生长与生物量的相关性及通径分析

为了解云南松苗木生长对生物量的影响程度和相对重要性,以采自云南省昆明市宜良县禄丰村林场种子培育的2年生云南松苗木为材料,对苗高、地径、主根长、侧根长、针叶长和侧根数6个生长性状及各组分生物量进行测定,运用相关性分析和逐步回归分析剔除了对生物量影响不大的性状,在此基础上采用通径分析方法研究了云南松苗木生长性状指标与生物量指标间的关系。结果表明：云南松苗木生长性状和生物量之间均呈现极显著的正相关关系。各生长性状对生物量均有直接或间接的正向效应,直接影响云南松苗木生物量的优势因素为地径和苗高,针叶长、侧根长和主根长对生物量的影响也起正向效应。各生长性状对生物量的直接效应均较大,而通过其他性状的间接效应均较小,其中侧根长通过其他性状对生物量产生的间接影响最大。依据相关性分析和通径分析,建立了云南松各组分生物量与生长性状之间的数学模型,可用于云南松苗期生物量的估测。     

广西禾本科植物二新记录属

该文报道了广西禾本科(Poaceae)植物二新记录属,即菵草属( Beckmannia Host)和草沙蚕属( Tripogon Roem. et Schult.)。菵草属有2种及1变种,分布较广,我国有1种1变种,广西首次记录到该属的菵草[ Beckmannia syzigachne (Steud.) Fern.]。草沙蚕属约有30种,多分布于亚洲和非洲,我国有11种,广西首次记录到该属的线形草沙蚕( Tripogon filiformis Nees ex Steud.)。同时,还提供了2个新记录属、种的形态描述与照片。     

粉背含笑，云南东南部木兰科植物一新种

本新种与皱皮杜鹃(Rhododendron wiltonii Hemsl.et Wils.)相近似,区别在于前者叶较小,长6.8～8.0 cm,宽2.0～2.5 cm,叶表面平坦而不呈泡状突起,叶背密被一层黄色至锈红色毡毛,花5～6（～9）朵,较小,长约2.5 cm,易于区别。     

Troglobitic scorpions: a new genus and species from Brazil

A new genus and species of troglobitic buthid scorpion are described on the basis of a single specimen collected in Brazil. This is the first cavernicolous scorpion ever found in Brazil, and only the second to be found in South America. Some considerations on troglobitic scorpions are proposed.     

La grotte Marcel Clouet à Cognac (Charente)

The Marcel Clouet Cave in Cognac (Charente) is a small cavity, more a shelter than a true cave, in the Cretaceous limestone cliffs along the Antenne, a tributary of the Charente River. The site suffered from a number of clandestine excavations before the work of C. Burnez, who was then followed by one of us (A.D.). The material recovered in stratigraphic context represents both Middle and Upper Paleolithic. The former is an example of Mousterian of Acheulian Tradition (MTA), while the latter includes Aurignacian (probably early) and Perigordian (probably Châtelperronian Gravettian), as well as some Solutrean objects recovered outside of stratigraphic context. It is important to note that this is one of only a few Charentian rockshelter sites, which has yielded an example of MTA.     

Recherches dans le massif d’Ardines : nouvelles galeries ornées de la grotte de Tito Bustillo

During the year 2002 we have continued the works in the massive of Ardines at Ribadesella, Asturias, and especially in its fundamental cave, Tito Bustillo. Here the prospection has permitted us to find several new elements of great cultural and graphic value. A consistent deposit in four cutted contours in the form of head of hind and also two new galleries, called gallery of the Bisons and gallery of the Anthropomorphes, communicated with the Principal Gallery of the cave and mutually. In this last one exist remains of adaptation of the space, bony remains that we are yet digging and two figures of painted anthropomorphes with an exceptional interest. Finally, in the ensemble N XI, place where it is found the habitation deposit, and where we have found large masses of red colourings prepared for its use, exists a small final cave, where also it has been painted in its interior, and where the mouth is opened among the remains of a great deposit in surface that occupies all its northern part.     

Hironoia fusiformis gen. et sp. nov.; a cornalean fruit from the Kamikitaba locality (Upper Cretaceous,Lower Coniacian) in northeastern Japan

The application of sieving techniques to bulk samples from the Ashizawa Formation, Futaba Group (Lower Coniacian) of northeastern Honshu, Japan, has yielded well-preserved mesofossil assemblages comparable with those recently described from eastern North America, Europe, and central Asia. Among the most abundant and distinctive components of these assemblages are fusiform fruits that are assigned here to a new genus and species, Hironoia fusiformis gen. et sp. nov. The fruits developed from an epigynous ovary with three to four locules. Each locule bears one seed and has a distinctive dorsal germination valve. These features of the fruit, along with the adnate calyx, indicate an affinity to extant Cornales and specifically the Cornaceae sensu lato. The recognition of an unequivocal cornalean fruit in the Early Coniacian–Early Santonian of Japan provides the earliest record of this group in the fossil record. It also establishes a minimum age for the early divergence of the asterid clade, a major group of living angiosperms comprising more than a third of all species of extant flowering plants. Electronic Publication     

Molecular recognition between 4a<Emphasis Type="Italic">S/R</Emphasis>-galanthamine diastereoisomers and α-cyclodextrin

Molecular recognition between 4aS/R-galanthamine diastereoisomers (1: 4aS-galanthamine; 2: 4aR-galanthamine) and -cyclodextrin (-CD) were studied by use of docking and molecular dynamics (MD) simulation approaches. The binding energy of constructed 2···-CD complexes is ~17 kcal mol^–1 lower than that of 1···-CD, implying a stronger binding ability of 2 with -CD than that of 1. The theoretical modeling result is consistent with our previous CZE result, which demonstrated that -CD is an efficient chiral additive for separating 1 and 2. The modeling result also indicates that both hydrophobic interaction and H-bond force may work as major factors for molecular recognition between the galanthamine diastereoisomers and -CD. Figure Chemical structures of 4aS-galanthamine (left) and 4aR-galanthamine (right)Abbreviations Galanthamine 4aS,6R,8aS-4a,5,9,10,11,12-Hexahydroxy-3-methoxy-11-methyl-6H-benzofuro[3a,3,2-e,f]benzazepin-6-ol     

平头反颚茧蜂属一新种(膜翅目:茧蜂科)(英文)

本文记述了采自湖北省神农架的平头反颚虽蜂属EudinostigmaTobias一新种：长角反颚茧蜂E．longusWuetChen。该新种触角甚长,24节;盾纵沟前瑞明显,具1深的椭园形中陷,腹板侧沟具刻痕,并胸腹节具中纵肯和叉脊,无小室;后足腿节粗状,长为宽的3．6倍;腹柄节长为端宽的1．7倍。新种模式标本保存于福建农业大学益虫室。     

Old-field colonization by Daphne gnidium: seedling distribution and spatial dependence at different scales

Abstract. This paper deals with the spatial distribution pattern of the bird-dispersed plant Daphne gnidium in a 10-yr abandoned field under Mediterranean conditions. Colonization of Mediterranean old-fields by bird-dispersed plants is expected to fit a theoretical model in which (1) seed dispersal follows a negative exponential curve with the distance from the seed source and (2) seedlings are better established under perches (nucleation sensu Yarranton & Morrison 1974). However, post-dispersal processes such as seed predation, seed germination and seedling establishment are also spatial-dependent and can lead to spatial autocorrelation in the seedling distribution within an old-field. Results show that both processes in the model (curve of seed dispersal and nucleation) significantly explained the spatial distribution of the seedlings, but some spatial variance remained unexplained. The semivariogram with the statistical residuals of the model detected spatial dependence at small (< 20 m) and large (> 250 m) distance intervals, indicating that some mechanisms with spatial components, apart from the curve of seed dispersal and nucleation under perches, also determined the distribution of seedlings colonizing fields. At scales below 20-m intervals, semivariance increased indicating that similarity between plots is lost when distance increases between them. This pattern may be explained because the favourable micro-environmental conditions for establishment produced under perches could be extended towards neighbour plots where perches were absent. A flat semi-variogram between 20-m and 250-m intervals shows spatial independence along this range. From 250 m on, the semivariance increased again, indicating spatial dependence at coarse-scale. It is possible that the colonization model failed at this scale because different spatial processes to those included in the model (perch presence and distance to the shrubland) could be controlling seed colonization at coarse-scale.