Results 81 to 90 of about 52,478 (276)

Patterns and Drivers of Pine Processionary Moth Defoliation in Mediterranean Mountain Forests

Frontiers in Ecology and Evolution, 2019
Insect defoliations are one of the threats of forests health, and climate warming may enhance the occurrence of more severe outbreaks. Thus, understanding the spatial and temporal patterns of insect defoliation may provide valuable information to infer ...
Antonio Gazol, Rodolfo Hernández-Alonso, J. Julio Camarero   +2 more
doaj   +1 more source

Spectral response of guava leaves under infestation by Costalimaita ferruginea (coleoptera: Chrysomelidae)

Agricultural and Forest Entomology, EarlyView.
Coccinellidae (Coleoptera), Miridae (Hemiptera), Hemerobiidae (Neuroptera), Pentatomidae (Hemiptera), Anystidae (Acari), Erythraeidae (Acari) and spiders (Araneidae, Oxyopidae and Salticidae) fed on the invasive paropsine leaf beetles in Marlborough, New Zealand.
Souradji I. Bachirou, Pedro G. Peixoto, David L. Rosalen   +2 more
wiley   +1 more source

Defoliation percentage in two soybean cultivars at different growth stages

Revista Brasileira de Engenharia Agrícola e Ambiental, 2015
The objective of this study was to evaluate the agronomic variables due to the effects of different levels of defoliation in the phenological phases of two soybean cultivars. The experiment was conducted during the 2011/2012 season, in a randomized block
Cláudio A. da S. Glier, José B. Duarte Júnior, Gabriel M. Fachin, Antonio C. T. da Costa, Vandeir F. Guimarães, Chrismam R. Mrozinski   +5 more
doaj   +1 more source

Differences in characteristics between naturalized threatened plants and other threatened plants

Conservation Biology, EarlyView.
Abstract Many non‐native plant species introduced by humans have become naturalized. At the same time many species are threatened in their native range. However, the number of plant species threatened in their native range that are naturalized elsewhere remains unknown.
Weihan Zhao, Trevor S. Fristoe, Amy J. S. Davis, Wayne Dawson, Franz Essl, Holger Kreft, Jan Pergl, Petr Pyšek, Patrick Weigelt, Marten Winter, Mark van Kleunen   +10 more
wiley   +1 more source

Transcriptome analysis reveals common and distinct mechanisms for sheepgrass (Leymus chinensis) responses to defoliation compared to mechanical wounding.

PLoS ONE, 2014
BackgroundHerbivore grazing is a multiple-component process that includes wounding, defoliation, and saliva deposition. Despite the extensive published research on mechanical wounding and defoliation, no analysis to identify the genes that specify ...
Shuangyan Chen, Yueyue Cai, Lexin Zhang, Xueqing Yan, Liqin Cheng, Dongmei Qi, Qingyuan Zhou, Xiaoxia Li, Gongshe Liu   +8 more
doaj   +1 more source

Influence of climatic variables on crown condition in pine forests of Northern Spain [PDF]

, 2008
Producción CientíficaThe aim of this study was to find relationships between crown condition and some climatic parameters to identify which are those having a main influence on crown condition, and how this influence is shown in the tree (crown ...
A Kattenberg, A Wellburn, AT DeGaetano, B Zierl, B Zierl, BR Bonsal, C Boonen, C Parmesan, CA Gracia, CD Schönwiese, CJ Kucharik, D Cadahia, D Durrant, DR Houston, E Piervitali, EC and UN/ECE, F Kraxner, G Lonsdale, ICP Forests, IPCC, J Karas, JL Innes, JL Innes, JM Klap, L Buffoni, M Brunetti, M Brunetti, M Hulme, M Ninyerola, M Obersteiner, MHI Dore, MJ Esteban-Parra, ML Bryant, ML Parry, Panel on Reconciling Temperature Observations, R Heino, S Del Río, W De Vries, W Soon   +38 more
core   +1 more source

Predation on Artificial Caterpillars Varies With Vertical Stratification but Not Light Gradients in a Sugar Maple Temperate Forest

Entomologia Experimentalis et Applicata, EarlyView.
Predation pressure varies vertically, with highest arthropod predation in the understory and highest bird predation in the canopy. Light availability differs across vertical strata, but predation patterns are more strongly influenced by height and forest structure than by light gradients.
Mahsa Hakimara, Emma Despland
wiley   +1 more source

A History of the Eastern Larch Beetle, \u3ci\u3eDendroctonus Simplex\u3c/i\u3e (Coleoptera: Scolytidae), in North America [PDF]

, 2017
The eastern larch beetle, Dendroctonus simplex, is reputedly a secondary pest but may attack and kill tamarack and ornamental larches throughout Canada, the northeastern United Stales, and Alaska. Isolated infestations of this pest have been reported for
Langor, D. W, Raske, A. G
core   +2 more sources

Leaf Extracts of Coffea racemosa Inhibit Trypsin Activity and Affect Larval Development in Spodoptera frugiperda and Diatraea saccharalis

Entomologia Experimentalis et Applicata, EarlyView.
Leaf extracts of Coffea racemosa inhibit digestive trypsins and impair the development of two major lepidopteran pests, Spodoptera frugiperda and Diatraea saccharalis. While both species showed significant enzymatic inhibition, biological responses differed markedly. D. saccharalis exhibited high mortality, whereas S.
Nicole de Paula Souza, Diandro Ricardo Barilli, Sandy Souza Fonsêca, Ana Letícia Zero dos Santos   +3 more
wiley   +1 more source

Influence of meteorological conditions and crown defoliation on tree phenology in intensive forest monitoring plots in Slovenia

Acta Silvae et Ligni, 2014
Data from the forest monitoring programme in Slovenia were used to assess the relationship between tree phenology, crown defoliation and meteorological conditions in Fagus sylvatica, Quercus robur and Picea abies forests in the 2004-2013 period.
Urša Vilhar, Mitja Skudnik, Mitja Ferlan, Primož Simončič   +3 more
doaj   +1 more source