Results 21 to 30 of about 1,812,730 (293)

Resource competition in plant invasions: emerging patterns and research needs

open access: yesFrontiers in Plant Science, 2014
Invasions by alien plants provide a unique opportunity to examine competitive interactions among plants. While resource competition has long been regarded as a major mechanism responsible for successful invasions, given a well-known capacity for many ...
Margherita eGioria   +3 more
doaj   +1 more source

Associational Effects and Indirect Interactions-The Dynamical Effects of Consumer and Resource Traits on Generalist-Resource Interactions

open access: yesFrontiers in Ecology and Evolution, 2022
Trophic interaction modifications occur in food webs when the direct or indirect interaction between two species is affected by a third species. These behavioral modification effects are often referred to as associational effects.
Maartje J. Klapwijk, Michael B. Bonsall
doaj   +1 more source

Apparent Competition in Two-Sided Platforms [PDF]

open access: yesSSRN Electronic Journal, 2017
We study a platform’s design of membership and transaction fees when sellers compete and buyers cannot observe the prices and features of goods without incurring search costs. The platform alleviates sellers’ competition by charging them transaction fees that increase with sales revenue, and extracts surplus via membership fees.
Guven, Gokhan   +2 more
openaire   +2 more sources

Impact of wild prey availability on livestock predation by snow leopards [PDF]

open access: yesRoyal Society Open Science, 2017
An increasing proportion of the world's poor is rearing livestock today, and the global livestock population is growing. Livestock predation by large carnivores and their retaliatory killing is becoming an economic and conservation concern.
Kulbhushansingh R. Suryawanshi   +6 more
doaj   +1 more source

Interactions between native and invasive species: A systematic review of the red squirrel-gray squirrel paradigm

open access: yesFrontiers in Ecology and Evolution, 2023
The eastern gray squirrel (Sciurus carolinensis) has been labeled as one of the 100 worst invasive alien species by the IUCN. In Europe, the species has been introduced to Britain, Ireland and Italy, and its subsequent spread has resulted in wide-scale ...
Lucas A. Wauters   +6 more
doaj   +1 more source

Short-term indirect interactions between two moth (Lepidoptera: Noctuidae) species mediated by shared parasitoids: The benefit of being scarce

open access: yesEuropean Journal of Entomology, 2003
Despite the impact of parasitoids on insect populations being extensively studied, indirect parasitoid-mediated effects remain rarely documented in natural communities.
Tiit TEDER, Toomas TAMMARU
doaj   +1 more source

Natural enemies and biodiversity: The double-edged sword of trophic interactions

open access: yesMètode Science Studies Journal: Annual Review, 2019
Natural enemies, that is, species that inflict harm on others while feeding on them, are fundamental drivers of biodiversity dynamics and represent a substantial portion of biodiversity as well.
Alexandre Mestre, Robert D. Holt
doaj   +1 more source

Differential impact of a shared nematode parasite on two gamebird hosts: implications for apparent competition [PDF]

open access: yes, 2001
If the deleterious effects of non-specfic parasites are greater on vulnerable host species than on reservoir host species then exclusion of the vulnerable host through apparent competition is more likely. Evidence suggests that such a mechanism occurs in
Tompkins, David M   +2 more
core   +1 more source

Interaction of perceptual grouping and crossmodal temporal capture in tactile apparent-motion [PDF]

open access: yes, 2011
Previous studies have shown that in tasks requiring participants to report the direction of apparent motion, task-irrelevant mono-beeps can "capture'' visual motion perception when the beeps occur temporally close to the visual stimuli. However, the
Hermann J. Müller   +11 more
core   +1 more source

Predation determines different selective pressure on pea aphid host races in a complex agricultural mosaic. [PDF]

open access: yesPLoS ONE, 2013
Field assessments were conducted to examine the interplay between host plant and predation in complex agricultural mosaic on pea aphid clover and alfalfa races. In one experiment, we examined the relative fitness on clover race (CR) and alfalfa race (AR)
Adalbert Balog, Oswald J Schmitz
doaj   +1 more source

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