scholarly journals Numerically dominant species drive patterns in resource use along a vertical gradient in tropical ant assemblages

Biotropica ◽  
2019 ◽  
Vol 52 (1) ◽  
pp. 101-112 ◽  
Author(s):  
Stephanie J. Law ◽  
Catherine Parr
Keyword(s):  
Resource Use ◽  
Dominant Species ◽  
Vertical Gradient ◽  
Ant Assemblages

scholarly journals Ecomorphology and resource use by dominant species of tropical estuarine juvenile fishes

2015 ◽  
Vol 13 (2) ◽  
pp. 401-412 ◽  
Author(s):  
André Luiz Machado Pessanha ◽  
Francisco Gerson Araújo ◽  
Ronnie Enderson M. C. C. Oliveira ◽  
Adna Ferreira da Silva ◽  
Natalice Santos Sales
Keyword(s):  
Habitat Use ◽  
Resource Use ◽  
Dominant Species ◽  
Juvenile Fish ◽  
Tropical Estuary ◽  
Trophic Groups ◽  
Caudal Peduncle ◽  
Pectoral Fins ◽  
Tropical Estuarine ◽  
Morphological Patterns

Eleven ecomorphological attributes and diet of seventeen juvenile fish species were examined to test the hypothesis that morphological patterns determine resource uses in estuarine habitats. Species were separated according to the apparatus to food capture and habitat use (benthic or pelagic) in three different groups: (1) a group with depressed fish body, strong caudal peduncle and enlarged pectoral fins; (2) a second group laterally flattened with a wide protruding mouth, and (3) a third group strongly flattened with small pectorals fins. The following six trophic groups were organized based on prey categories: Zooplanktivores, Benthivores, Omnivores, Detritivores, Macrocarnivores and Insectivores. Significant results (PERMANOVA) between ecomorphological indices and habitat and between ecomorphological indices and trophic groups were found. These data indicate that similarity of ecomorphological forms, which minimize the influence of environment and partitioning of food, would help facilitate the co-existence of these fish when they are abundant in this tropical estuary.

The effects of urbanization on ant assemblages (Hymenoptera: Formicidae) associated with the Molson Nature Reserve, Quebec

2005 ◽  
Vol 137 (2) ◽  
pp. 215-225 ◽  
Author(s):  
Jean-Philippe Lessard ◽  
Christopher M. Buddle
Keyword(s):  
Species Richness ◽  
Community Composition ◽  
Dominant Species ◽  
Fragment Size ◽  
Buffer Zone ◽  
Natural Habitats ◽  
Ant Assemblages ◽  
Forest Interior ◽  
Interior Forest ◽  
Urban Sites

AbstractUrbanization causes the fragmentation of natural habitats into isolated patches surrounded by anthropogenic habitats. Fragment size and the intensity of human disturbance have been shown to affect both composition and diversity of arthropod communities, but most groups have been understudied. We investigated effects of urbanization on ant assemblages (Hymenoptera: Formicidae) in and around the Molson Reserve, a preserved maple-beech forest surrounded by residential properties near Montréal, Quebec. We studied how local ant assemblages differed in terms of composition, abundance, and species richness, depending on whether they were situated in the interior forest, in adjacent residential backyards, or at the edge between these two habitats. We also compared an intact forest interior with a younger and moderately disturbed forest (“buffer zone”) between the urban matrix and the interior forest. Few differences were detected between the buffer zone and the intact forest interior. Extrapolated estimates of species richness suggest that it is lowest in the forest interior and highest in urban zones. Community composition, as investigated with ordination analysis, revealed a clear difference between the fauna of urban sites and the fauna of edges and forest interiors, and analyzing the relative abundance of ants showed residential backyards to contain the most ants. Urban assemblages were characterized by several competitively dominant species, including one introduced or “tramp” species. The occurrence of aggressive and dominant species in urban sites and at the edges of the Molson Reserve could potentially interfere with the dispersal and immigration of ground-dwelling arthropods and negatively affect local diversity or community composition in isolated forest reserves in urban centres.

REMOVAL EXPERIMENT REVEALS LIMITED EFFECTS OF A BEHAVIORALLY DOMINANT SPECIES ON ANT ASSEMBLAGES

Ecology ◽  
2004 ◽  
Vol 85 (3) ◽  
pp. 648-657 ◽  
Author(s):  
Heloise Gibb ◽  
Dieter F. Hochuli
Keyword(s):  
Dominant Species ◽  
Removal Experiment ◽  
Ant Assemblages

scholarly journals Are foundation species effects different than those of dominant species? A case study of ant assemblages in northeastern North American forests

2016 ◽  
Author(s):  
Sydne Record ◽  
Tempest McCabe ◽  
Benjamin Baiser ◽  
Aaron M. Ellison
Keyword(s):  
Functional Diversity ◽  
Dominant Species ◽  
Taxonomic Diversity ◽  
Foundation Species ◽  
Data Archive ◽  
Data Accessibility ◽  
Harvard Forest ◽  
Trophic Effects ◽  
Ant Assemblages ◽  
Comparative Zoology

AbstractFoundation species uniquely control associated biodiversity through non-trophic effects, whereas dominant species are locally abundant but are replaceable in ecological systems. Long-term data on ant assemblages at the Harvard Forest Hemlock Removal Experiment (HF-HeRE) and the Black Rock Future of Oak Forests Experiment (BRF-FOFE) provide insights into how ant assemblages change and reassemble following the loss of a foundation species (Tsuga canadensis) or a dominant genus (Quercus). At HF-HeRE, removal of T. canadensis trees resulted in taxonomic and functional shifts in ant assemblages relative to control stands. In contrast, ant assemblages at BRF-FOFE varied little regardless of whether oaks or non-oaks were removed from the canopy. Non-trophic effects of foundation species were stronger than indirect trophic effects on taxonomic and functional diversity of ant assemblages. In contrast, non-trophic effects of dominant species were weaker than indirect trophic effects on ant taxonomic diversity and some measures of ant functional diversity.Statement of authorshipA.M. Ellison and S. Record conceived the study. A.M. Ellison, T. 17 McCabe, and S. Record collected field data. T. McCabe and S. Record did the taxonomic diversity analyses. B. Baiser and S. Record did the functional diversity analyses. All authors contributed to drafts of the manuscript.Data accessibilityAll data (i.e., ant and trait) and R code are available from the Harvard Forest Data Archive (http://harvardforest.fas.harvard.edu/data-archive), datasets HF-118 (HF-HeRE) and HF-097 (BRF-FOFE). Nomenclature follows Bolton (2016); voucher specimens are stored at the Harvard Forest and at the Museum of Comparative Zoology.

Differences in productivity QOL, and resource use in newly diagnosed and established irritable bowel syndrome (IBS) patients

2001 ◽  
Vol 120 (5) ◽  
pp. A634-A634
Author(s):  
P JHINGRAN ◽  
J RICCI ◽  
M MARKOWITZ ◽  
S GORDON ◽  
A ASGHARIAN ◽  
...  
Keyword(s):  
Irritable Bowel Syndrome ◽  
Resource Use ◽  
Newly Diagnosed ◽  
Irritable Bowel

Type D personality in Greek employees: Somatization, cardiovascular events and healthcare resource use

2012 ◽  
Author(s):  
Athanasios Lagoudis ◽  
Christine Varvara ◽  
Panagiotis Stafylas ◽  
Stavros Gousopoulos
Keyword(s):  
Resource Use ◽  
Cardiovascular Events ◽  
Healthcare Resource ◽  
Type D Personality ◽  
Healthcare Resource Use ◽  
Type D
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