Results 21 to 30 of about 171,653 (339)

Two new ant species of the genus Leptogenys (Hymenoptera, Formicidae) from Hainan, China, with a key to the known Chinese species [PDF]

open access: yesZooKeys
Two new species of ponerine ants from Hainan Province, China, Leptogenys hainanensis sp. nov. and L. zhoui sp. nov., are delineated and depicted based on the worker caste. Leptogenys hainanensis sp. nov. belongs to the L.
Chao Chen   +4 more
doaj   +3 more sources

Distribution, habitat preferences and population sizes of two threatened tree ferns, Cyathea cunninghamii and Cyathea x marcescens, in south-eastern Australia [PDF]

open access: yes, 2013
The distribution, population sizes and habitat preferences of the rare tree ferns Cyathea cunninghamii Hook.f. (Slender Tree Fern) and F1 hybrid Cyathea x marcescens N.A.Wakef.
Brownsey, Patrick   +3 more
core   +1 more source

A Review of Disturbances to the Ecosystems of the Mexican Caribbean, Their Causes and Consequences

open access: yesJournal of Marine Science and Engineering, 2022
In a relatively short timescale (less than 50 years), urbanization has caused many anthropogenic disturbances that have affected ecosystem health and, directly or indirectly, quality of life for the local human population.
Izchel Gómez   +5 more
doaj   +1 more source

Aminopropyl-Functionalized Silica CO2 Adsorbents via Sonochemical Methods

open access: yesJournal of Chemistry, 2016
Aminopropyl-functionalized hexagonal mesoporous silica (HMS) products, as are of interest for CO2 capture applications, were separately prepared by mixing aminopropyltrimethoxysilane (APTS) and HMS in toluene via a conventional stirred reactor and via ...
Gregory P. Knowles, Alan L. Chaffee
doaj   +1 more source

Comparative measurements of carbon dioxide fluxes from two nearby towers in a central Amazonian rainforest: the Manaus LBA site [PDF]

open access: yes, 2002
Forests around Manaus have staged the oldest and the longest forest-atmosphere CO2 exchange studies made anywhere in the Amazon. Since July 1999 the exchange of CO2, water, and energy, as well as weather variables, have been measured almost continuously ...
Araújo, A.C.   +11 more
core   +2 more sources

Fluctuating asymmetry and environmental stress : understanding the role of trait history [PDF]

open access: yes, 2013
While fluctuating asymmetry (FA; small, random deviations from perfect symmetry in bilaterally symmetrical traits) is widely regarded as a proxy for environmental and genetic stress effects, empirical associations between FA and stress are often weak or ...
Alcantara-Exposito, Angelica   +6 more
core   +2 more sources

Rainforest Mathematics

open access: yesJournal of Mathematics Education at Teachers College, 2014
Journal of Mathematics Education at Teachers College, Vol. 5 No.
openaire   +3 more sources

Multifunctional Bamboo Based Materials Empowered by Multiscale Hierarchical Structures—A Critical Review

open access: yesAdvanced Materials, EarlyView.
This review summarizes the latest progress in transforming renewable bamboo resources into high‐value functional materials. It emphasizes how to leverage bamboo's multiscale hierarchical structures to realize innovative applications in energy, construction, environment, and medicine, providing key insights for developing high‐performance bio‐based ...
Yuxiang Huang   +13 more
wiley   +1 more source

Adventurous Rainforest Hike [PDF]

open access: yes, 2011
Postcard from Amanda Contreras, during the Linfield College Semester Abroad Program at James Cook University in Cairns ...
Contreras, Amanda
core   +1 more source

Predicting dispersal of auto-gyrating fruit in tropical trees : a case study from the Dipterocarpaceae [PDF]

open access: yes, 2015
Acknowledgments We thank the Sabah Forestry Department for access to SFR and the Rainforest Discovery Center for use of the canopy tower. JRS is funded by the Swiss National Science Foundation (SNF) grant number PDFMP3_132479/1.
Aoki   +52 more
core   +3 more sources

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