Results 31 to 40 of about 527,042 (341)
The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada
Population Ecology, EarlyView.We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley +1 more source
Is it really organic? Authenticity testing of organic plant products using elemental and isotopic fingerprinting [PDF]
, 2012 The commercial market for high-value plant products is steadily increasing. Consumers are willingly paying premium prices for plants that originate from specific geographical regions or are produced according to certain agricultural management practices.
Husted , S., Laursen, K.H.
core
PlantID – DNA-based identification of multiple medicinal plants in complex mixtures [PDF]
, 2012 Background An efficient method for the identification of medicinal plant products is now a priority as the global demand increases. This study aims to develop a DNA-based method for the identification and authentication of plant species that can be ...
Bremner, Paul +7 more
core +2 more sources
Scientific Opinion on the developmental neurotoxicity potential of acetamiprid and imidacloprid
EFSA Journal, 2013 The European Food Safety Authority asked the Panel on Plant Protection Products (PPR) and their residues to deliver a Scientific Opinion on the developmental neurotoxicity (DNT) potential of the neonicotinoid insecticides acetamiprid and imidacloprid. An
EFSA Panel on Plant Protection Products and their Residues (PPR)
doaj +1 more source
Water dynamics in plant production
, 2003 1: The Role of Water in Plant Life 1.1: Functions of Water in the Plant Box 1.1: Light and water - prerequisites of photosynthesis 1.2: Adaptation Strategies of Plants to Overcome Water Shortage 1.3: Water and Net Primary Production 1.4: Water and Type of Vegetation 2: The Role of Water in Soil 2.1: Soil Genesis and Soil Functions 2.2: Soil Fauna and ...
Ehlers, Wilfried, Goss, Michael J.
openaire +4 more sources
Network topology drives population temporal variability in experimental habitat networks
Population Ecology, EarlyView.Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu +3 more
wiley +1 more source
Transport is important in the carbon footprint of imported organic plant products. [PDF]
, 2011 Farmers or consumers may ask about the environmental implications when choosing organic products. Is it sustainable to buy organic products from China or South America?
Abreu, Lucimar Santiago de +6 more
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Geographic variation in walking activity in the red flour beetle Tribolium castaneum
Population Ecology, EarlyView.This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley +1 more source
Organic production in Norway [PDF]
, 2005 Present status of the Norwegian organic sector: -Official target of 10% organic production in 2010. -Organic production receives public subsidies -Marketing and production of plant products successful and growing -Marketing of livestock products ...
Wibe, Atle
core
Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors
Population Ecology, EarlyView.Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley +1 more source