A life cycle approach to modeling sea lamprey population dynamics in the Lake Champlain basin to evaluate alternative control strategies

2012 ◽  
Vol 38 ◽  
pp. 101-114 ◽  
Author(s):  
Eric A. Howe ◽  
J. Ellen Marsden ◽  
Therese M. Donovan ◽  
Roland H. Lamberson
Keyword(s):  
Population Dynamics ◽  
Life Cycle ◽  
Control Strategies ◽  
Sea Lamprey ◽  
Life Cycle Approach ◽  
Lake Champlain ◽  
Alternative Control

Compensatory Mechanisms in Great Lakes Sea Lamprey Populations: Implications for Alternative Control Strategies

2003 ◽  
Vol 29 ◽  
pp. 113-129 ◽  
Author(s):  
Michael L. Jones ◽  
Roger A. Bergstedt ◽  
Michael B. Twohey ◽  
Michael F. Fodale ◽  
Douglas W. Cuddy ◽  
...  
Keyword(s):  
Great Lakes ◽  
Control Strategies ◽  
Sea Lamprey ◽  
Alternative Control ◽  
Compensatory Mechanisms

Control of Sulfonylurea-Resistant Kochia (Kochia scoparia)

1997 ◽  
Vol 11 (2) ◽  
pp. 270-276 ◽  
Author(s):  
Dennis J. Tonks ◽  
Philip Westra
Keyword(s):  
Population Dynamics ◽  
Field Experiments ◽  
Control Strategies ◽  
Growth Stages ◽  
Kochia Scoparia ◽  
Alternative Control ◽  
Application Timing ◽  
Selection Of

Greenhouse and field experiments were conducted to assess the effectiveness of herbicide tank mixtures for control of sulfonylurea (SU)-resistant and -susceptible kochia biotypes. Kochia control at three growth stages was evaluated for fluroxypyr, dicamba, 2,4-D, bromoxynil, and bromoxynil plus MCPA. Control decreased as kochia size increased, especially at less than full labeled herbicide rates. Treatments containing bromoxynil provided best overall control in the greenhouse but were less effective on larger kochia plants in the field. Dicamba and fluroxypyr provided similar, effective kochia control both in greenhouse and field experiments. 2,4-D did not provide acceptable kochia control regardless of formulation, rate, or application timing. All kochia biotypes responded similarly to non-SU herbicides. In the field, inclusion of an SU herbicide in the treatment generally resulted in no increased R-kochia control above that provided by the non-SU herbicide. R-kochia population dynamics can affect selection of alternative control strategies.

Interannual variability in life-stage specific survival and life history diversity of coho salmon in a coastal Oregon basin

2021 ◽  
Author(s):  
Kim K Jones ◽  
Trevan J Cornwell ◽  
Daniel L. Bottom ◽  
Staci Stein ◽  
Steven Starcevich
Keyword(s):  
Population Dynamics ◽  
Life History ◽  
Life Cycle ◽  
Interannual Variability ◽  
Coho Salmon ◽  
Life Stage ◽  
Full Range ◽  
Life Cycle Approach ◽  
Surplus Production ◽  
Life History Patterns

We quantified the population dynamics and life history diversity of seven brood years of coho salmon using a life-cycle approach. Four life history patterns, composed of fry, fry–nomad, parr, and yearling migrants indicated the importance of connectivity and access to a full range of freshwater and estuarine rearing environments through the year. Survival of each life history type varied annually with the yearling migrants contributing an average of 70% to the spawners in all but one return year. Fifty eight percent of the spawners of the 2013 return year had an estuarine rearing strategy, primarily parr migrants that overwintered in the estuary. Fry migrants, thought to be surplus production, were consistently observed in the estuary and represented in the returning spawners. The annual contribution of alternative rearing strategies to the spawners may support the resilience and viability of the population. We recommend that life cycle models of coho salmon account for the contribution of estuary migrants to the productivity and persistence of coho salmon in support of management and restoration of populations.

scholarly journals Environmental challenges of the chlor-alkali production: Seeking answers from a life cycle approach

2017 ◽  
Vol 580 ◽  
pp. 147-157 ◽  
Author(s):  
Isabel Garcia-Herrero ◽  
María Margallo ◽  
Raquel Onandía ◽  
Rubén Aldaco ◽  
Angel Irabien
Keyword(s):  
Life Cycle ◽  
Life Cycle Approach ◽  
Environmental Challenges

Life Cycle Approach to Process Validation

2018 ◽  
pp. 1-7
Author(s):  
Ajay Babu Pazhayattil ◽  
Naheed Sayeed-Desta ◽  
Emilija Fredro-Kumbaradzi ◽  
Jordan Collins
Keyword(s):  
Life Cycle ◽  
Life Cycle Approach ◽  
Process Validation

Simulating the impact of four control strategies on the population dynamics of Neospora caninum infection in Swiss dairy cattle

2006 ◽  
Vol 77 (3-4) ◽  
pp. 254-283 ◽  
Author(s):  
Barbara Häsler ◽  
Katharina D.C. Stärk ◽  
Heinz Sager ◽  
Bruno Gottstein ◽  
Martin Reist
Keyword(s):  
Population Dynamics ◽  
Dairy Cattle ◽  
Neospora Caninum ◽  
Control Strategies ◽  
Caninum Infection ◽  
The Impact
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