NDLI: Sea urchins in seagrass communities: Resource management as functional perspective of adaptive strategies

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Sea urchins in seagrass communities: Resource management as functional perspective of adaptive strategies

Content Provider	Scilit
Author	Tertschnig, W. P.
Copyright Year	2020
Description	Feeding behavior and growth of sea urchins was studied with a population of juvenile Tripneustes ventricosus from a seagrass (Thalassia testudinum) stand in Bermuda. Feeding and foraging patterns, preferences and daily consumption rates were determined in field experiments and related to vegetational parameters of the turtle grass community. Although the results confirm that the direct impact of grazing on productive tissue is almost negligible they suggest a revision of the role that sea urchins and other herbivores play in seagrass communities. Their striking inability to efficiently exploit the rich nutritional potential and productivity of seagrasses is interpreted as an evolutionary strategy of maintaining imperfectness on the species level for the benefit of the community. The distinct mode of foraging and selective grazing observed in this study serves as resource management, ensuring persistence and predictibility for both the consumer and the producer. The observed pattern, however, also allows an optimization of feeding and net energy gain through its time-minimizing and energy-maximizing character. Sea urchins grazing at moderate density in seagrass beds function as a community stabilizing factor rather than bearing the potential hazard of exploitation. Book Name: Echinodermata
Related Links	https://content.taylorfrancis.com/books/download?dac=C2010-0-35007-2&isbn=9781003079224&doi=10.1201/9781003079224-64&format=pdf
Ending Page	367
Page Count	7
Starting Page	361
DOI	10.1201/9781003079224-64
Language	English
Publisher	Informa UK Limited
Publisher Date	2020-08-13
Access Restriction	Open
Subject Keyword	Book Name: Echinodermata Marine and Freshwater Biology Behavior Optimization Functional Feeding Adaptive Resource Management Seagrass Sea Urchins
Content Type	Text
Resource Type	Chapter

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