Results 71 to 80 of about 210,901 (351)

WIRELESS COMMUNICATIONS IN A TREE CANOPY [PDF]

Progress In Electromagnetics Research B, 2013
The wireless communications in a tree canopy is essential for pre-harvesting control of fruit productions. To e-ciently communicate between a sensor node and a sink node, channel characteristics in a tree canopy must be well-established. In this paper, propagation channel characteristics at the frequencies of 2.45 and 5.2GHz have been estimated for ...
Pobsook Sooksumrarn, Chainarong Kittiyanpunya, Paiboon Yoiyod, Monai Krairiksh   +3 more
openaire   +1 more source

LiDAR shows that higher forests have more slender trees [PDF]

, 2012
High-density Airborne Laser Scanning was used to derive the Canopy Height Model (CHM) of an experimental forest site in the neotropics (Paracou, French Guiana).
Blanc, Lilian, Caron, F., Sabatier, Damien, Vincent, Grégoire   +3 more
core  

The spread of non‐native species

Biological Reviews, EarlyView.
ABSTRACT The global redistribution of species through human agency is one of the defining ecological signatures of the Anthropocene, with biological invasions reshaping biodiversity patterns, ecosystem processes and services, and species interactions globally.
Phillip J. Haubrock, Ali Serhan Tarkan, Irene Martín‐Forés, Stelios Katsanevakis, Ronaldo Sousa, Ismael Soto, Andy J. Green, Antonín Kouba, Teun Everts, Victoria Dominguez Almela, Nadège Belouard, Cang Hui, Jamie Bojko, Victor Deklerck, Margaux Boeraeve, Franz Essl, J. Robert Britton   +16 more
wiley   +1 more source

The influence of tree species on canopy soil nutrient status in a tropical lowland wet forest in Costa Rica [PDF]

, 2009
The canopy is host to a large percentage of the flora and fauna in tropical wet forests and is distinct from the forest floor in plant richness, soil type and microclimate.
Cardelús, CL, Demarco, J, MacK, MC, Treseder, KK, Woods, C   +4 more
core  

The As and Bs of titi monkey linguistics: why emotional communication is not the enemy

Biological Reviews, EarlyView.
ABSTRACT The alarm call sequences of titi monkeys (genera Plecturocebus, Callicebus and Cheracebus) have sparked important debates over whether they exhibit parallels with human language. Some researchers consider these sequences to involve both semantics and syntax, while others argue that the sequences convey semantic information without syntax.
Mélissa Berthet, Geoffrey Mesbahi, Maël Leroux   +2 more
wiley   +1 more source

Effects of canopy management of umbrella tree (Terminalia brownii Fres.) on microclimate and maize (Zea mays L.) yield in agroforestry parkland of South Ari District, southern Ethiopia

Frontiers in Sustainable Food Systems
IntroductionTraditionally, some smallholder farmers in the South Ari District of southern Ethiopia retain natural forest remnant trees on their crop fields, and they manage them through pruning and pollarding techniques.
Mitiku Ayele Handiso, Mitiku Ayele Handiso, Mitiku Ayele Handiso, Zebene Asfaw, Bruno Glaser, Tobias Bromm, Arthur Gross, Bruk Lemma, Bruk Lemma   +8 more
doaj   +1 more source

Phylogenetic Structure of Tree Species across Different Life Stages from Seedlings to Canopy Trees in a Subtropical Evergreen Broad-Leaved Forest.

PLoS ONE, 2015
Investigating patterns of phylogenetic structure across different life stages of tree species in forests is crucial to understanding forest community assembly, and investigating forest gap influence on the phylogenetic structure of forest regeneration is
Yi Jin, Hong Qian, Mingjian Yu
doaj   +1 more source

Impacts of Tree Canopy Cover on Microclimate and Human Thermal Comfort in a Shallow Street Canyon in Wuhan, China

Atmosphere, 2020
Increasing the number of street trees can be a promising method to reduce impacts of climate change currently impacting urban public health. However, the quantitative relationships between tree canopy cover and thermal comfort remains unclear ...
Zhuodi Huang, Changguang Wu, Mingjun Teng, Yaoyu Lin   +3 more
doaj   +1 more source

Are Temperate Canopy Spiders Tree-Species Specific?

PLoS ONE, 2014
Arboreal spiders in deciduous and coniferous trees were investigated on their distribution and diversity. Insecticidal knock-down was used to comprehensively sample spiders from 175 trees from 2001 to 2003 in the Białowieża forest and three remote forests in Poland. We identified 140 species from 9273 adult spiders.
Mupepele, Anne-Christine, Müller, Tobias D., Dittrich, Marcus, Floren, Andreas   +3 more
openaire   +6 more sources

Vegetation and the importance of insecticide-treated target siting for control of Glossina fuscipes fuscipes [PDF]

, 2011
Control of tsetse flies using insecticide-treated targets is often hampered by vegetation re-growth and encroachment which obscures a target and renders it less effective. Potentially this is of particular concern for the newly developed small targets (0.
A Shaw, B Williams, Basilio Njiru, C Laveissiere, C Laveissiere, DJ Rogers, GA Vale, GA Vale, GA Vale, Glyn A. Vale, I Hutton, J Esterhuizen, J Esterhuizen, J Esterhuizen, JB Rayaisse, JB Rayaisse, JM Lindh, Johan Esterhuizen, LM Ogwal, MI Mwangelwa, Michael J. Lehane, MM Mohamed-Ahmed, MO Omolo, P Merot, P Van den Bossche, PP Simarro, Ricardo E. Gürtler, Stephen J. Torr   +27 more
core   +7 more sources