Results 41 to 50 of about 6,270,003 (252)

Suitability of Selected Broad-Leaved Weeds for Survival and Growth of Two Stalk-Boring \u3ci\u3eHydraecia\u3c/i\u3e Species (Lepidoptera: Noctuidae) [PDF]

open access: yes, 2017
Third instar hop vine borer (Hydraecia immanis) and potato stem borer (H. micacea) are new pest species on corn in the Midwest. Early instar larvae feed on small-stemmed grasses, and later instar larvae switch to broad- stemmed hosts to complete ...
Giebunk, Bruce L   +2 more
core   +2 more sources

An urban–rural spotlight: evolution at small spatial scales among urban and rural populations of common ragweed

open access: yesJournal of Urban Ecology, 2021
Urbanization produces similar environmental changes across cities relative to their neighboring rural environments. However, there may be high environmental heterogeneity across an urban–rural gradient.
Adam Kostanecki   +2 more
semanticscholar   +1 more source

Ambrosia artemisiifolia L.: Common ragweed [PDF]

open access: yesActa herbologica, 2018
A. artemisiifolia is a cosmopolitan species, widely distributed across all continents. Its biological and ecological properties, as well as the soil and climate characteristics in Serbia, have enabled its dramatic spread in our country, where it has obtained the status of an invasive alien neotophyte species.
openaire   +2 more sources

Elevated CO2 and Increased N Intensify Competition between Two Invasive Annual Plants in China

open access: yesLife, 2022
As multiple invaders often co-occur, understanding the interactions between different invasive species is important. Previous studies have reported on invasional meltdown and neutral and interference relationships between invasive species.
Caiyun Zhao, Xiangjian Zhao, Junsheng Li
doaj   +1 more source

Time-Domain Data Fusion Using Weighted Evidence and Dempster–Shafer Combination Rule: Application in Object Classification [PDF]

open access: yes, 2019
To apply data fusion in time-domain based on Dempster–Shafer (DS) combination rule, an 8-step algorithm with novel entropy function is proposed. The 8-step algorithm is applied to time-domain to achieve the sequential combination of time-domain data ...
Anwar, Sohel, Khan, Md Nazmuzzaman
core   +1 more source

Mechanistic species distribution modeling reveals a niche shift during invasion [PDF]

open access: yes, 2016
Niche shifts of nonnative plants can occur when they colonize novel climatic conditions. However, the mechanistic basis for niche shifts during invasion is poorly understood and has rarely been captured within species distribution models.
Atsushi Murai   +6 more
core   +6 more sources

Sieben Jahre Aktionsprogramm Ambrosia in Bayern – eine Bestandsaufnahme

open access: yesJulius-Kühn-Archiv, 2014
Since 2005 the common ragweed, Ambrosia artemisiifolia, which was introduced from North America has also been found in Bavaria in larger stocks and has an increasing tendency to spread.
Brix, Jutta
doaj   +1 more source

Climatic suitability ranking of biological control candidates: a biogeographic approach for ragweed management in Europe [PDF]

open access: yes, 2017
Biological control using natural antagonists has been a most successful management tool against alien invasive plants that threaten biodiversity. The selection of candidate agents remains a critical step in a biocontrol program before more elaborate and ...
Broennimann, O.   +5 more
core   +1 more source

Im Osten nichts Neues? Beobachtungen zu Ambrosia artemisiifolia an den Straßenrändern der Niederlausitz

open access: yesJulius-Kühn-Archiv, 2014
In the area of Drebkau, common ragweed has been known on agricultural land since the 1970s. The structural changes in agriculture within eastern Germany in the wake of reunification facilitate common ragweed to become established on many other ...
Lemke, Andreas
doaj   +1 more source

Preliminary Ecological Assessment of Waller Creek [PDF]

open access: yes, 1975
This report assesses the ecological character of Waller Creek. This includes a general description, its physical setting, vegetation and habitat descriptions, ecological value indexes, and other ecological metrics.Waller Creek Working ...
Espey, Huston and Associates, Inc.   +1 more
core   +1 more source

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