scholarly journals Niche Overlap and Diet Breadth: Can bumble bee (Bombus spp.) foraging behavior reveal species vulnerabilities?

2011 ◽  
Author(s):  
Rosemary Malfi ◽  
Rosemary Malfi ◽  
T'ai Roulston
Keyword(s):  
Foraging Behavior ◽  
Niche Overlap ◽  
Diet Breadth ◽  
Bumble Bee

scholarly journals Movers and shakers: Bumble bee foraging behavior shapes the dispersal of microbes among and within flowers

Ecosphere ◽  
2019 ◽  
Vol 10 (5) ◽  
Author(s):  
Avery L. Russell ◽  
María Rebolleda‐Gómez ◽  
Tierney Marie Shaible ◽  
Tia‐Lynn Ashman
Keyword(s):  
Foraging Behavior ◽  
Bumble Bee ◽  
Bee Foraging

Impoundment led to spatial trophic segregation of three closely related catfish species in the Three Gorges Reservoir, China

2020 ◽  
Vol 71 (7) ◽  
pp. 750
Author(s):  
Chuansong Liao ◽  
Sibao Chen ◽  
Sandra Bibiana Correa ◽  
Wei Li ◽  
Tanglin Zhang ◽  
...  
Keyword(s):  
Food Availability ◽  
Three Gorges Reservoir ◽  
Food Resource ◽  
Niche Overlap ◽  
Diet Breadth ◽  
Three Gorges ◽  
Lower Section ◽  
Resource Base ◽  
The Three Gorges Reservoir ◽  
The Three Gorges

The construction of the Three Gorges Reservoir (TGR), the largest dam in the world, created novel spatial and seasonal fluctuations in food availability along the Yangtze River. We studied changes in diet and niche overlap of three co-occurring catfish species between the upper and lower sections of the TGR and across four hydrological seasons to investigate whether the diets of native catfish species reflect the fluctuations in food availability. Zoobenthos dominated the diets of the three species in the upper section, but shrimp made the bulk of the diet in the lower section. This was the case in every season except during the rising-water season when all three species increased the consumption of allochthonous foods. Diet breadth was significantly broader in the upper section relative to the lower section, and expanded during the rising-water season in the lower section. Niche overlap was significantly lower in the upper section than in the lower section. A non-significant trend of reduced niche overlap during the rising-water season was observed in both sections. Our results suggest that, in less than a decade, dietary plasticity facilitated the adaptation of these species to novel habitats and a shifted food-resource base formed by the impoundment.

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