https://scholars.lib.ntu.edu.tw/handle/123456789/371058
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Juan M. Jiménez | en_US |
dc.contributor.author | Kazimierz Więski | - |
dc.contributor.author | Laurie B. Marczak | - |
dc.contributor.author | CHUAN-KAI HO | - |
dc.contributor.author | Steven C. Pennings | - |
dc.creator | Juan M. Jiménez, Kazimierz Więski, Laurie B. Marczak, Chuan-Kai Ho & Steven C. Pennings | - |
dc.date.accessioned | 2018-09-10T09:19:22Z | - |
dc.date.available | 2018-09-10T09:19:22Z | - |
dc.date.issued | 2012 | - |
dc.identifier.uri | http://www.scopus.com/inward/record.url?eid=2-s2.0-84857657878&partnerID=MN8TOARS | - |
dc.identifier.uri | http://scholars.lib.ntu.edu.tw/handle/123456789/371058 | - |
dc.description.abstract | Top-down and bottom-up effects interact to structure communities, especially in salt marshes, which contain strong gradients in bottom-up drivers such as salinity and nutrients. How omnivorous consumers respond to variation in prey availability and plant quality is poorly understood. We used a mesocosm experiment to examine how salinity, nutrients, an omnivore (the katydid Orchelimum fidicinium) and an herbivore (the planthopper Prokelisia spp.) interacted to structure a simplified salt marsh food web based on the marsh grass Spartina alterniflora. Bottom-up effects were strong, with both salinity and nutrients decreasing leaf C/N and increasing Prokelisia abundance. Top-down effects on plants were also strong, with both the herbivore and the omnivore affecting S. alterniflora traits and growth, especially when nutrients or salt were added. In contrast, top-down control by Orchelimum of Prokelisia was independent of bottom-up conditions. Orchelimum grew best on a diet containing both Spartina and Prokelisia, and in contrast to a sympatric omnivorous crab, did not shift to an animal-based diet when prey were present, suggesting that it is constrained to consume a mixed diet. These results suggest that the trophic effects of omnivores depend on omnivore behavior, dietary constraints, and ability to suppress lower trophic levels, and that omnivorous katydids may play a previously unrecognized role in salt marsh food webs. © 2011 Coastal and Estuarine Research Federation. | - |
dc.language | en | en |
dc.relation.ispartof | Estuaries and Coasts | en_US |
dc.source | AH | - |
dc.subject | Omnivory; Orchelimum fidicinium; Prokelisia spp.; Salt marsh; Spartina alterniflora; Top-down and bottom-up interactions | - |
dc.subject.classification | [SDGs]SDG14 | - |
dc.subject.other | bottom-up control; crab; diet; food web; grass; insect; marine ecosystem; nutrient budget; omnivory; saltmarsh; sea surface salinity; sympatry; top-down control; trophic level; Animalia; Archaeorrhyncha; Decapoda (Crustacea); Hymenachne; Orchelimum; Orchelimum fidicinium; Prokelisia; Spartina; Spartina alterniflora; Tettigoniidae | - |
dc.title | Effects of an Omnivorous Katydid, Salinity, and Nutrients on a Planthopper-Spartina Food Web | - |
dc.type | journal article | en |
dc.identifier.doi | 10.1007/s12237-011-9458-7 | - |
dc.relation.pages | 475-485 | - |
dc.relation.journalvolume | 35 | - |
dc.relation.journalissue | 2 | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.openairetype | journal article | - |
item.grantfulltext | none | - |
item.cerifentitytype | Publications | - |
item.fulltext | no fulltext | - |
crisitem.author.dept | Ecology and Evolutionary Biology | - |
crisitem.author.dept | Life Science | - |
crisitem.author.orcid | 0000-0002-6437-0073 | - |
crisitem.author.parentorg | College of Life Science | - |
crisitem.author.parentorg | College of Life Science | - |
顯示於: | 生態學與演化生物學研究所 |
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