scholarly journals Habitat selection by kokanee salmon and smallmouth bass in thermally heterogeneous environments: The importance of growth maximization to diel habitat shifts

1990 ◽  
Author(s):  
M Bevelhimer ◽  
S Adams ◽  
L Gross
Keyword(s):  
Habitat Selection ◽  
Smallmouth Bass ◽  
Heterogeneous Environments ◽  
Kokanee Salmon ◽  
Growth Maximization

Breeding habitat selection behaviors in heterogeneous environments: implications for modeling reintroduction

Oikos ◽  
2009 ◽  
Vol 118 (5) ◽  
pp. 663-674 ◽  
Author(s):  
Jean-Baptiste Mihoub ◽  
Pascaline Le Gouar ◽  
François Sarrazin
Keyword(s):  
Habitat Selection ◽  
Breeding Habitat ◽  
Heterogeneous Environments

Breeding-site selection by red-belly toads, Melanophryniscus stelzneri (Anura: Bufonidae), in Sierras of Córdoba, Argentina

2011 ◽  
Vol 32 (1) ◽  
pp. 105-112 ◽  
Author(s):  
Gerardo Leynaud ◽  
Julián Lescano ◽  
Laura Pereyra
Keyword(s):  
Habitat Selection ◽  
Water Body ◽  
Site Selection ◽  
Breeding Site ◽  
Breeding Habitat ◽  
Heterogeneous Environments ◽  
Breeding Sites ◽  
Ephemeral Ponds ◽  
Spawning Sites ◽  
Habitat Variables

AbstractDifferences among wetlands can have important consequences on reproductive success of amphibians; therefore habitat selection is expected to be of particular importance for anurans inhabiting heterogeneous environments. To investigate if the red-belly toad (Melanophryniscus stelzneri; Anura: Bufonidae) uses available habitats differentially and to determine the main factors influencing the use of certain water bodies as breeding habitat, we surveyed 30 spawning sites used by red-belly toads, and 30 adjacent unused sites, in an area of the Sierras of Córdoba, Argentina. We evaluated the relative importance of morphological and biotic features of ponds, and the presence of other organisms within the water body on the use of ponds as breeding sites by red-belly toads. Eight habitat variables related to important water body features were recorded and were used to fit a habitat selection model with GLM. Red-belly toads presented a positive selection to mallines, a wetland characteristic of the Sierras of Córdoba. They were associated with small, shallow ephemeral ponds with muddy banks and a high percent of vegetation cover. In general, the ponds used did not host other anuran species or potential predators. Breeding site selection by red-belly toads is largely consistent with records for other species of the genus in other parts of Argentina.

A Bioenergetics Analysis of Diel Vertical Migration by Kokanee Salmon, Oncorhynchus nerka

1993 ◽  
Vol 50 (11) ◽  
pp. 2336-2349 ◽  
Author(s):  
Mark S. Bevelhimer ◽  
S. Marshall Adams
Keyword(s):  
Vertical Migration ◽  
Diel Vertical Migration ◽  
Oncorhynchus Nerka ◽  
General Rule ◽  
Foraging Efficiency ◽  
Energetic Efficiency ◽  
Net Energy ◽  
Migration Strategy ◽  
Kokanee Salmon ◽  
Growth Maximization

Diel vertical migration of fishes is probably a result of the combined effects of several selective forces, including predator avoidance, foraging efficiency, and bioenergetic efficiency. We considered both foraging efficiency and energetic efficiency as a combined effect which we called growth maximization. The importance of growth maximization as a selective force was evaluated with a bioenergetics-based model to estimate growth rates of various migration scenarios of kokanee salmon, Oncorhynchus nerka. Environmental parameters (temperature and zooplankton distributions) in the model were obtained from a North Carolina reservoir with an established population of kokanee. The simulations demonstrated that vertical migrations can be energetically advantageous when kokanee and their prey are thermally segregated and that ontogenetic and seasonal differences in the optimal migration strategy should be expected. The general rule for vertical migration as determined from the simulations is to feed where net energy intake is maximized and then reside when not feeding where energetic costs are minimized and food is digested to the point that consumption during the next feeding period is not limited by the amount of undigested food remaining in the stomach. Data obtained from vertical gill nets and hydroacoustics were compared with model predictions.

Migration in Heterogeneous Environments: Differences in Habitat Selection Between the Wing Forms of the Dimorphic Planthopper, Prokelisia Marginata (Homoptera: Delphacidae)

Ecology ◽  
1980 ◽  
Vol 61 (4) ◽  
pp. 859-867 ◽  
Author(s):  
Robert F. Denno ◽  
Michael J. Raupp ◽  
Douglas W. Tallamy ◽  
Charles F. Reichelderfer
Keyword(s):  
Habitat Selection ◽  
Heterogeneous Environments

Habitat Selection and the Evolution of Specialists in Heterogeneous Environments

2008 ◽  
Vol 54 (3-4) ◽  
pp. 311-328 ◽  
Author(s):  
Daniel Fortin ◽  
Douglas W. Morris ◽  
Philip D. McLoughlin
Keyword(s):  
Habitat Selection ◽  
Heterogeneous Environments

scholarly journals Habitat Selection by Smallmouth Bass in Response to Physical Characteristics of a Simulated Stream

1986 ◽  
Vol 115 (2) ◽  
pp. 314-321 ◽  
Author(s):  
Carolyn W. Sechnick ◽  
Robert F. Carline ◽  
Roy A. Stein ◽  
Edward T. Rankin
Keyword(s):  
Habitat Selection ◽  
Physical Characteristics ◽  
Smallmouth Bass
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