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Nutrient and structural effects of d...

Hines, Jessica.

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Nutrient and structural effects of detritus on food web interactions in an intertidal marsh (Spartina alterniflora).

Record Type:	Electronic resources : Monograph/item
Title/Author:	Nutrient and structural effects of detritus on food web interactions in an intertidal marsh (Spartina alterniflora)./
Author:	Hines, Jessica.
Description:	103 p.
Notes:	Source: Masters Abstracts International, Volume: 42-06, page: 2099.
Contained By:	Masters Abstracts International42-06.
Subject:	Biology, Entomology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1419425
ISBN:	0496241958

Nutrient and structural effects of detritus on food web interactions in an intertidal marsh (Spartina alterniflora).
Hines, Jessica.

Nutrient and structural effects of detritus on food web interactions in an intertidal marsh (Spartina alterniflora). - 103 p.

Source: Masters Abstracts International, Volume: 42-06, page: 2099.

Thesis (M.S.)--University of Maryland, College Park, 2004.

In most systems the majority of plant primary production is not directly consumed by herbivores, but instead dies and enters the system as detritus. This study examines indirect (nutrient) and direct (structural) impacts of detritus on the aboveground community of arthropods associated with the Spartina alterniflora. I manipulated carbon, nitrogen, and detrital resources in a field experiment and measured the response of the aboveground and belowground communities. Herbivore density in the field was limited by carbon supplements that also decreased decomposition rates, and limited plant size as well as predator abundance. Nitrogen addition enhanced herbivore density by increasing decomposition rate, inorganic soil nitrogen pools, and plant quality. In the laboratory, thatch directly affected herbivore fitness by decreasing survivorship and male body size. Overall, results suggest that detritus has the potential to adversely affect aboveground herbivores directly by decreasing fitness and indirectly by reducing plant biomass and enhancing natural enemy abundance.

ISBN: 0496241958Subjects--Topical Terms:

1018619
Biology, Entomology.

Nutrient and structural effects of detritus on food web interactions in an intertidal marsh (Spartina alterniflora).
LDR:01990nmm 2200277 4500 001 1852088
005 20051229075130.5
008 130614s2004 eng d
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035 $a (UnM)AAI1419425
035 $a AAI1419425
040 $a UnM $c UnM
100 1 $a Hines, Jessica. $3 1024549
245 1 0 $a Nutrient and structural effects of detritus on food web interactions in an intertidal marsh (Spartina alterniflora).
300 $a 103 p.
500 $a Source: Masters Abstracts International, Volume: 42-06, page: 2099.
500 $a Chair: Robert F. Denno.
502 $a Thesis (M.S.)--University of Maryland, College Park, 2004.
520 $a In most systems the majority of plant primary production is not directly consumed by herbivores, but instead dies and enters the system as detritus. This study examines indirect (nutrient) and direct (structural) impacts of detritus on the aboveground community of arthropods associated with the Spartina alterniflora. I manipulated carbon, nitrogen, and detrital resources in a field experiment and measured the response of the aboveground and belowground communities. Herbivore density in the field was limited by carbon supplements that also decreased decomposition rates, and limited plant size as well as predator abundance. Nitrogen addition enhanced herbivore density by increasing decomposition rate, inorganic soil nitrogen pools, and plant quality. In the laboratory, thatch directly affected herbivore fitness by decreasing survivorship and male body size. Overall, results suggest that detritus has the potential to adversely affect aboveground herbivores directly by decreasing fitness and indirectly by reducing plant biomass and enhancing natural enemy abundance.
590 $a School code: 0117.
650 4 $a Biology, Entomology. $3 1018619
650 4 $a Biology, Ecology. $3 1017726
690 $a 0353
690 $a 0329
710 2 0 $a University of Maryland, College Park. $3 657686
773 0 $t Masters Abstracts International $g 42-06.
790 1 0 $a Denno, Robert F., $e advisor
790 $a 0117
791 $a M.S.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1419425