Results 81 to 90 of about 14,017,981 (247)

Functional responses can unify invasion ecology [PDF]

open access: yesBiological Invasions, 2017
AbstractWe contend that invasion ecology requires a universal, measurable trait of species and their interactions with resources that predicts key elements of invasibility and ecological impact; here, we advocate that functional responses can help achieve this across taxonomic and trophic groups, among habitats and contexts, and can hence help unify ...
Dick, Jaimie   +12 more
openaire   +3 more sources

ADDITIVE VERSUS PROPORTIONAL PEST DAMAGE FUNCTIONS: WHY ECOLOGY MATTERS [PDF]

open access: yes
Economic analyses of pests typically assume damage is either additively separable from pest free yield or proportional to it. This paper describes the ecological assumptions required for additive and proportional damage functions to demonstrate that both
Mitchell, Paul D.
core   +1 more source

An Ecological-Economic Integrated General Equilibrium Model [PDF]

open access: yes
A thorough analysis of sustainable development requires a better understanding of how economic and ecological systems interact over the long run. This paper provides an integrated model to analyze interactions between economic and ecological systems. The
Amy R. Hwang
core  

Metabolic rate and growth in the temperate bivalve Mercenaria mercenaria at a biogeographic limit, from the English Channel

open access: yes, 2010
Metabolism and growth rate of the hard clam, Mercenaria mercenaria, were investigated in a population invasive to Southampton Water, southern England. An individual metabolic model expressed as a function of soft tissue dry mass was fitted to data of 18 ...
Alastair Brown   +8 more
core   +1 more source

Thermodynamic Optimization for an Endoreversible Dual-Miller Cycle (DMC) with Finite Speed of Piston

open access: yesEntropy, 2018
Power output ( P ), thermal efficiency ( η ) and ecological function ( E ) characteristics of an endoreversible Dual-Miller cycle (DMC) with finite speed of the piston and finite rate of heat transfer are investigated by applying finite time ...
Zhixiang Wu, Lingen Chen, Huijun Feng
doaj   +1 more source

Maximum likelihood estimation for constrained parameters of multinomial distributions - Application to Zipf-Mandelbrot models [PDF]

open access: yes, 2006
A numerical maximum likelihood (ML) estimation procedure is developed for the constrained parameters of multinomial distributions. The main difficulty involved in computing the likelihood function is the precise and fast determination of the multinomial ...
Izsák, F.
core   +2 more sources

Pattern formation in reaction diffusion models with spatially inhomogeneous diffusion coefficients [PDF]

open access: yes, 1992
Reaction-diffusion models for biological pattern formation have been studied extensively in a variety of embryonic and ecological contexts. However, despite experimental evidence pointing to the existence of spatial inhomogeneities in various biological ...
Benson, D. L.   +2 more
core   +3 more sources

Seed removal by ants in Brazilian savanna: optimizing fieldwork

open access: yesSociobiology, 2018
There has been an increase in the number of studies using seed removal by ants to evaluate ecosystem functioning; however, these studies encompassed varying time periods and used different types of seeds. Therefore, our aim was to evaluate differences in
Marina Acero Angotti   +3 more
doaj   +1 more source

Contextual Factors Associated with the Achievement of African American and European American Adolescents: A Diversimilarity Approach [PDF]

open access: yes, 1999
The current study is an extension of Luster & McAdoo\u27s 1994 study of African American children and ecological factors impacting academic performance of these children. Luster and McAdoo found that maternal educational level, income, number of children
McKinney, Robin, Ofori-Dankwa, Joseph
core   +1 more source

Don’t judge toxic weeds on whether they are native but on their ecological effects

open access: yesEcology and Evolution, 2020
The sharp rise in anthropogenic activities and climate change has caused the extensive degradation of grasslands worldwide, jeopardizing ecosystem function, and threatening human well‐being.
Zhenchao Zhang   +9 more
doaj   +1 more source

Home - About - Disclaimer - Privacy