Results 101 to 110 of about 940,447 (307)

CpDNA-based species identification and phylogeography: application to a complex of African tropical tree species [PDF]

, 2010
Despite their importance as a hotspot of biodiversity, the history of the African tropical lowland rainforests is poorly known. In particular the respective influence of past climatic factors, environmental heterogeneity and physical barriers on the ...
Bourland, Nils, Cruaud, Corinne, Doucet, Jean-Louis, Doumenge, Charles, Duminil, Jérôme, Hardy, Olivier J., Heuertz, Myriam, Navascués, Miguel   +7 more
core  

Hepatic morphology and serum biochemical profile according to dry and rainy seasons in Pygocentrus nattereri (Characiformes: Serrasalmidae)

The Anatomical Record, EarlyView.
Abstract This study investigated the physiological and morphological adaptations of the liver of the carnivorous fish Pygocentrus nattereri (piranha) in response to seasonal variations (dry and rainy seasons) in the Brazilian Pantanal. The objective was to describe how the liver, a central organ in metabolic regulation, responds to environmental ...
Maria Eduarda Corona Garcia, Sandriely F. Marcondes, Mayara S. Siqueira, Taynara R. F. Leão, Robson A. Rodrigues, Karine N. N. Farias, André L. N. Silva, Karin Virgínia Kuibida, Lilian Franco‐Belussi, Carlos E. Fernandes   +9 more
wiley   +1 more source

Comprehensive species sampling reveals pervasive pseudogenization and recurrent complete loss of plastid ndh genes in the genus Cymbidium (Orchidaceae)

BMC Plant Biology
Background Plastome evolution in plants with diverse nutritional strategies provides unique insights into genomic-level adaptive processes. The genus Cymbidium (Orchidaceae), characterized by its heterogeneous life forms and transitions toward ...
Hai-Yao Chen, Li-Qiong Chen, Xin Yao, Zhi-Rong Zhang, Ji-Dong Ya, Xiao-Hua Jin, De-Zhu Li, Jun-Bo Yang, Wen-Bin Yu   +8 more
doaj   +1 more source

twoe: An R package for modelling tropical forest dynamics from permanent sample plots using a hierarchical Bayesian approach to capture species diversity [PDF]

, 2011
Permanent sample plots are commonly used in tropical forest ecology for conservation and management purposes. Longitudinal tree data can be used to estimate species demographic functions which can then be implemented in forest dynamics simulators to help
Gourlet-Fleury, Sylvie, Mortier, Frédéric, Vieilledent, Ghislain   +2 more
core  

The musculature and skeleton of the pelvic fin of the crocodile shark, Pseudocarcharias kamoharai (Matsubara, 1936) (Elasmobranchii: Lamniformes): Morphology and sexual dimorphism

The Anatomical Record, EarlyView.
This work brings new information on the sexual characteristics of the crocodile shark (Pseudocarcharias kamoharai) exploring the pelvic fin musculature, as well as the siphon sac and the musculature and skeleton of the clasper. Our paper is the first to point out clearly the sexual dimorphism related exclusively to the pelvic fin musculature in males ...
Laura F. Mianutti, Kenshu Shimada, João Paulo C. B. da Silva   +2 more
wiley   +1 more source

Dos especies nuevas del género Phellinus (Hymenochaetales, Basidiomycota) en México Two new species of the genus Phellinus ((Hymenochaetales, Basidiomycota) from México

Revista Mexicana de Biodiversidad, 2008
Se describen por primera vez para la ciencia, los caracteres morfológicos macroscópicos y microscópicos de 2 especies resupinadas del género Phellinus encontradas en vegetación tropical de México: Phellinus guzmanii y Phellinus herrerae.
Tania Raymundo, Ricardo Valenzuela, Joaquín Cifuentes   +2 more
doaj  

Gmelina arborea “death disease” in fast-growth plantations: Effects of soil and climatic conditions on severity and incidence and its implications for wood quality

Forest Systems, 2018
Aim of study: Plantations are threatened by an emerging disease called “Gmelina death disease”. The objective of this study was measured the incidence and severity of this disease and were correlated with the characteristics of the plantations, micro ...
Marcela Arguedas, María Rodriguez-Solis, Roger Moya, Alexander Berrocal   +3 more
doaj   +1 more source

Survey on the chemical composition of several tropical wood species [PDF]

, 2019
Variability in the chemical composition of 614 species is described in a database containing measurements of wood polymers (cellulose, lignin and pentosan), as well as overall extraneous components (ethanol-benzene, or hot water extracts and ash, with a ...
Gérard, Jean, Paradis, Sébastien, Thibaut, Bernard   +2 more
core   +3 more sources

Oldest well‐preserved euprimate petrosal, from the early Eocene of India (Vastan Lignite Mine, Gujarat)

The Anatomical Record, EarlyView.
Abstract An exquisitely preserved, isolated partial petrosal with associated fragmentary stapes is described from the Vastan Lignite Mine (Gujarat, India), dated to the early Eocene (~54.5 Ma). Several anatomical traits (e.g., large petrosal plate; posterolateral entry of the internal carotid artery to the tympanic cavity; bony tubes surrounding the ...
Mary T. Silcox, Kenneth D. Rose, Rachel H. Dunn, Kishor Kumar, Rajendra S. Rana, Ashok Sahni, Lachham Singh, Thierry Smith, Jordan W. Crowell   +8 more
wiley   +1 more source

Spatial Scaling in Model Plant Communities

, 2005
We present an analytically tractable variant of the voter model that provides a quantitatively accurate description of beta-diversity (two-point correlation function) in two tropical forests.
Amos Maritan, Igor Volkov, J. Harte, J. Silvertown, J. H. Connell, Jayanth R. Banavar, M. Abramowitz, R. Durrett, R. Holley, S. P. Hubbell, Stephen P. Hubbell, T. M. Liggett, T. M. Liggett, Tommaso Zillio   +13 more
core   +1 more source