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Changes in limpet diet according to habitat type.
Dong-U Kim1, Jeongsoo Kim2, Hanna Bae3
1School of Earth and Environmental Sciences, Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea.
Marine Pollution Bulletin
|August 10, 2024
Summary
Habitat type, not location, dictates limpet diets. These key intertidal grazers consume the most available food sources, influencing rocky shore food webs.
Area of Science:
- Marine Ecology
- Benthic Ecology
- Food Web Dynamics
Background:
- Limpets are crucial in structuring rocky shore benthic communities.
- Their precise role in food web dynamics remains incompletely understood.
- Investigating limpet diet is key to understanding coastal ecosystem function.
Purpose of the Study:
- To identify environmental factors influencing limpet feeding habits.
- To analyze the contribution of various food sources to limpet diets across different habitats.
Main Methods:
- Carbon and nitrogen stable isotope analysis was performed on limpets and their potential food sources.
- Sampling was conducted across three distinct coastal habitat types.
- Dietary contributions were quantified for each habitat.
Main Results:
- Sediment organic matter dominated limpet diets (86%) in tidal flat bedrocks.
- Microphytobenthos (57%) and macroalgae (20%) were primary food sources on beaches.
- Phytoplankton (33%) and microphytobenthos (28%) were key in erosional bedrocks.
Conclusions:
- Habitat type is the primary determinant of limpet diet, surpassing latitude and seawater characteristics.
- Limpets act as non-selective grazers, consuming the most abundant available food resources.
- Understanding limpet diet is vital for predicting coastal food web responses to environmental changes.
