Fine-scale habitat heterogeneity explains the local distribution of two Amazonian frog species of concern for conservation

Biotropica ◽  
2016 ◽  
Vol 48 (5) ◽  
pp. 694-703 ◽  
Author(s):  
Rafael F. Jorge ◽  
Pedro I. Simões ◽  
William E. Magnusson ◽  
Albertina P. Lima
Keyword(s):  
Habitat Heterogeneity ◽  
Fine Scale ◽  
Local Distribution ◽  
Frog Species

scholarly journals Fine-Scale Habitat Heterogeneity Influences Occupancy in Terrestrial Mammals in a Temperate Region of Australia

PLoS ONE ◽  
2015 ◽  
Vol 10 (9) ◽  
pp. e0138681 ◽  
Author(s):  
Ingrid Stirnemann ◽  
Alessio Mortelliti ◽  
Philip Gibbons ◽  
David B. Lindenmayer
Keyword(s):  
Habitat Heterogeneity ◽  
Fine Scale ◽  
Temperate Region ◽  
Terrestrial Mammals

scholarly journals Fine‐scale habitat heterogeneity and vole runways influence seed dispersal in Plagiobothrys nothofulvus

2020 ◽  
Vol 107 (3) ◽  
pp. 413-422 ◽  
Author(s):  
Monica R. Grasty ◽  
Pamela G. Thompson ◽  
Elizabeth C. Hendrickson ◽  
Avery E. Pheil ◽  
Mitchell B. Cruzan
Keyword(s):  
Seed Dispersal ◽  
Habitat Heterogeneity ◽  
Fine Scale

scholarly journals Fine‐scale habitat heterogeneity influences browsing damage by elephant and giraffe

Biotropica ◽  
2020 ◽  
Author(s):  
Duncan M. Kimuyu ◽  
David Kenfack ◽  
Paul M. Musili ◽  
Robert O. Ang’ila
Keyword(s):  
Habitat Heterogeneity ◽  
Fine Scale ◽  
Browsing Damage

scholarly journals Fine-scale habitat heterogeneity favours the coexistence of supergene-controlled social forms in Formica selysi

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Sacha Zahnd ◽  
Amaranta Fontcuberta ◽  
Mesut Koken ◽  
Aline Cardinaux ◽  
Michel Chapuisat
Keyword(s):  
Social Organization ◽  
Habitat Heterogeneity ◽  
Ecological Factors ◽  
Fine Scale ◽  
Social Form ◽  
Single Queen ◽  
Social Forms ◽  
Empty Habitats ◽  
Spatially Varying ◽  
Spatially Varying Selection

Abstract Background Social insects vary widely in social organization, yet the genetical and ecological factors influencing this variation remain poorly known. In particular, whether spatially varying selection influences the maintenance of social polymorphisms in ants has been rarely investigated. To fill this gap, we examined whether fine-scale habitat heterogeneity contributes to the co-existence of alternative forms of social organization within populations. Single-queen colonies (monogyne social form) are generally associated with better colonization abilities, whereas multiple-queen colonies (polygyne social form) are predicted to be better competitors and monopolize saturated habitats. We hypothesize that each social form colonizes and thrives in distinct local habitats, as a result of their alternative dispersal and colony founding strategies. Here, we test this hypothesis in the Alpine silver ant, in which a supergene controls polymorphic social organization. Results Monogyne and polygyne colonies predominate in distinct habitats of the same population. The analysis of 59 sampling plots distributed across six habitats revealed that single-queen colonies mostly occupy unconnected habitats that were most likely reached by flight. This includes young habitats isolated by water and old habitats isolated by vegetation. In contrast, multiple-queen colonies were abundant in young, continuous and saturated habitats. Hence, alternative social forms colonize and monopolize distinct niches at a very local scale. Conclusions Alternative social forms colonized and monopolized different local habitats, in accordance with differences in colonization and competition abilities. The monogyne social form displays a colonizer phenotype, by efficiently occupying empty habitats, while the polygyne social form exhibits a competitor phenotype, thriving in saturated habitats. The combination of the two phenotypes, coupled with fine-scale habitat heterogeneity, may allow the coexistence of alternative social forms within populations. Overall, these results suggest that spatially varying selection may be one of the mechanisms contributing to the maintenance of genetic polymorphisms in social organization.

scholarly journals Correction: Fine-Scale Habitat Heterogeneity Influences Occupancy in Terrestrial Mammals in a Temperate Region of Australia

PLoS ONE ◽  
2015 ◽  
Vol 10 (10) ◽  
pp. e0140802
Author(s):  
Ingrid Stirnemann ◽  
Alessio Mortelliti ◽  
Philip Gibbons ◽  
David B. Lindenmayer
Keyword(s):  
Habitat Heterogeneity ◽  
Fine Scale ◽  
Temperate Region ◽  
Terrestrial Mammals

The influence of fine-scale habitat heterogeneity on invertebrate assemblage structure in upland semi-natural grassland

2010 ◽  
Vol 136 (1-2) ◽  
pp. 69-80 ◽  
Author(s):  
Lorna J. Cole ◽  
Meg L. Pollock ◽  
Duncan Robertson ◽  
John P. Holland ◽  
David I. McCracken ◽  
...  
Keyword(s):  
Habitat Heterogeneity ◽  
Assemblage Structure ◽  
Fine Scale ◽  
Natural Grassland ◽  
Invertebrate Assemblage

High Resolution Stereography of Complementary Freeze-Fracture Replicas Reveals the Presence of Depressions Opposite Membrane Associated Particles of Split Membranes

1971 ◽  
Vol 29 ◽  
pp. 442-443
Author(s):  
Russell L. Steere
Keyword(s):  
High Resolution ◽  
Cardiac Muscle ◽  
Electron Micrographs ◽  
Chromic Acid ◽  
Freeze Fracture ◽  
Distilled Water ◽  
Fine Scale ◽  
Acid Cleaning ◽  
Cleaning Solution

Complementary replicas have revealed the fact that the two common faces observed in electron micrographs of freeze-fracture and freeze-etch specimens are complementary to each other and are thus the new faces of a split membrane rather than the original inner and outer surfaces (1, 2 and personal observations). The big question raised by published electron micrographs is why do we not see depressions in the complementary face opposite membrane-associated particles? Reports have appeared indicating that some depressions do appear but complementarity on such a fine scale has yet to be shown.Dog cardiac muscle was perfused with glutaraldehyde, washed in distilled water, then transferred to 30% glycerol (material furnished by Dr. Joaquim Sommer, Duke Univ., and VA Hospital, Durham, N.C.). Small strips were freeze-fractured in a Denton Vacuum DFE-2 Freeze-Etch Unit with complementary replica tooling. Replicas were cleaned in chromic acid cleaning solution, then washed in 4 changes of distilled water and mounted on opposite sides of the center wire of a Formvar-coated grid.

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