Results 81 to 90 of about 1,952,338 (301)

The impact of forest management on saproxylic beetles and other arthropods in a semi-deciduous forest in Southern Benin [PDF]

, 2004
Tropical forest ecosystems worldwide are suffering from anthropogenic pressures leading to deforestation and forest degradation, and resulting in a loss of biodiversity.
Lachat, Thibault
core   +1 more source

Effect of genotypes, cytokinins and auxins for optimal growth during in vitro propagation of Bambusa balcooa Roxb.

Discover Plants
In India, presently, there is a gap between the demand and supply of quality planting material of bamboos. Bambusa balcooa is one of the economically important species in high demand for large scale planting in commercial plantations.
Fatima Shirin, Shalu Panika, Irshad Ali Saudagar, P. K. Rana, Kavita Patel   +4 more
doaj   +1 more source

Humidity and temperature interact in breaking physical dormancy in Fabaceae seeds from the Brazilian semiarid region

American Journal of Botany, EarlyView.
Abstract Premise In semiarid ecosystems such as the Brazilian Caatinga, physical seed dormancy (PY) is critical for plant persistence when water is unpredictable, but how soil moisture and temperature regulate PY release and seed longevity in species of native Fabaceae that have different growth forms is unknown. Methods Seeds of the herbaceous species
Humberto Araújo Almeida, Jessyca Adelle Silva Santos, Queila Souza Garcia   +2 more
wiley   +1 more source

Hydraulic function of medullary bundles in a tropical root climber

American Journal of Botany, EarlyView.
Abstract Premise Medullary bundles, which are vascular bundles in the pith, have evolved multiple times. However, their functional significance remains poorly understood. Here, we investigated how medullary bundles are involved in the vascular architecture and hydraulic function in a tropical root climber, Adelobotrys scandens (Melastomataceae) to ...
Sandrine Isnard, Damien Longepierre, Taylor Feild   +2 more
wiley   +1 more source

Improved timber harvest techniques maintain biodiversity in tropical forests [PDF]

, 2014
Tropical forests are selectively logged at 20 times the rate at which they are cleared, and at least a fifth have already been disturbed in this way. In a recent pan-tropical assessment, Burivalova et al.
Edwards, David P., Davies, Zoe G., Bicknell, Jake E., Struebig, Matthew J.   +3 more
core   +1 more source

Soil seed banks along elevational gradients in tropical, subtropical and subalpine forests in Yunnan Province, southwest China

Plant Diversity, 2017
Soil seed banks are a vital part of ecosystems and influence community dynamics and regeneration. Although soil seed banks in different habitats have been reported, how soil seed banks vary with elevational gradients in different climatic zones is still ...
Xiaqin Luo, Min Cao, Min Zhang, Xiaoyang Song, Jieqiong Li, Akihiro Nakamura, Roger Kitching   +6 more
doaj   +1 more source

Revisiting Securidaca longipedunculata Seed Oil: Applying NMR and Mass Spectroscopy to Confirm the Presence of 2‐Acetyl‐1,3‐Diacyl–sn‐Glycerols and Conjugated Hydroxydienoic Fatty Acids

Journal of the American Oil Chemists' Society, EarlyView.
The manuscript confirms and expands on previous reports concerning the presence of unusual conjugated hydroxydienoic fatty acids and acetyl‐TAG in the seed oil of Securidaca longipedunculata. The location of acetate only at sn‐2 of TAG was conclusively shown by high resolution NMR and hydroxy seed fatty acids are characterized.
Mark A. Smith, Jianfeng Zhu, Jin‐Yue Sun   +2 more
wiley   +1 more source

Energy and water dynamics of a central Amazonian rain forest [PDF]

, 2002
This paper presents measurements of the energy and water budgets of a tropical rain forest near Manaus, Brazil, in central Amazonia, collected between September 1995 and August 1996.
Grace, J., Grace, John, Y. Malhi, Pereira, M. G. P., Culf, A. D., A. D. Nobre, Clement, Robert J., E. Pegoraro, M. G. P. Pereira, A. D. Culf, Nobre, Antônio Donato, R. Clement, Clement, R., J. Grace, Pegoraro, Emiliano, Pegoraro, E., Nobre, A. D., Malhi, Yadvinder Singh, Pereira, Maria G.P., Culf, Alistair D., Malhi, Y.   +20 more
core   +1 more source

Rhizosphere microbial community construction during the latitudinal spread of the invader Chromolaena odorata

BMC Microbiology
The colonization of alien plants in new habitats is typically facilitated by microorganisms present in the soil environment. However, the diversity and structure of the archaeal, bacterial, and fungal communities in the latitudinal spread of alien plants
Ming-zhu Zhang, Wei-tao Li, Wen-jun Liu, Yu-long Zheng   +3 more
doaj   +1 more source

Evaluation of Varnishes to Slow Down the Aging of Plasticized PVC

Journal of Applied Polymer Science, EarlyView.
Varnish effectiveness in plasticized PVC strongly depends on both formulation and degradation state. A polyurethane varnish effectively limits color change and plasticizer loss in unaged PVC without phosphate plasticizers, whereas no protective effect is observed for phosphate‐containing PVC.
Mathilde Larrieu, Nathalie Balcar, Gilles Barabant, Maroussia Duranton, Odile Fichet, Sophie Cantin   +5 more
wiley   +1 more source