The lateral extent of the subsidy from an upland stream to riparian lycosid spiders

Robert A. Briers; Helen M. Cariss; Rory Geoghegan; John H. R. Gee

doi:10.1111/j.0906-7590.2005.04020.x

The lateral extent of the subsidy from an upland stream to riparian lycosid spiders

Robert A. Briers, Helen M. Cariss, Rory Geoghegan, John H. R. Gee

Department of Life Sciences

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57 Citations (Scopus)

Abstract

Adult aquatic insects emerging from streams can subsidize riparian food webs, but little is known of the spatial extent of these subsidies. Stable isotope (15N) enrichment of aquatic insects, principally a species of stonefly (Plecoptera: Leuctridae), emerging from an upland stream was used to trace the subsidy from the stream ecosystem to riparian spiders (Lycosidae). The downstream profile of spider δ15N correlated closely with that of adult stoneflies, indicating that they were deriving nutrition from aquatic sources. The contribution of adult aquatic insects to spider diets was determined using a two-source mixing model. Adult aquatic insects made up over 40% of spider diets adjacent to the stream, but

Original language	English
Pages (from-to)	165-170
Number of pages	6
Journal	Ecography
Volume	28
Issue number	2
Early online date	14 Mar 2005
DOIs	https://doi.org/10.1111/j.0906-7590.2005.04020.x
Publication status	Published - Apr 2005

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title = "The lateral extent of the subsidy from an upland stream to riparian lycosid spiders",

abstract = "Adult aquatic insects emerging from streams can subsidize riparian food webs, but little is known of the spatial extent of these subsidies. Stable isotope (15N) enrichment of aquatic insects, principally a species of stonefly (Plecoptera: Leuctridae), emerging from an upland stream was used to trace the subsidy from the stream ecosystem to riparian spiders (Lycosidae). The downstream profile of spider δ15N correlated closely with that of adult stoneflies, indicating that they were deriving nutrition from aquatic sources. The contribution of adult aquatic insects to spider diets was determined using a two-source mixing model. Adult aquatic insects made up over 40% of spider diets adjacent to the stream, but ",

author = "Briers, {Robert A.} and Cariss, {Helen M.} and Rory Geoghegan and Gee, {John H. R.}",

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AU - Gee, John H. R.

N1 - Briers, R. A, Cariss, H. M., Geoghegan, R., Gee, J. H. R. (2005). The lateral extent of the subsidy from an upland stream to riparian lycosid spiders. Ecography, 28, (2), 165-170. Sponsorship: UK Natural Environment Research Council, grant GR3/12114

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N2 - Adult aquatic insects emerging from streams can subsidize riparian food webs, but little is known of the spatial extent of these subsidies. Stable isotope (15N) enrichment of aquatic insects, principally a species of stonefly (Plecoptera: Leuctridae), emerging from an upland stream was used to trace the subsidy from the stream ecosystem to riparian spiders (Lycosidae). The downstream profile of spider δ15N correlated closely with that of adult stoneflies, indicating that they were deriving nutrition from aquatic sources. The contribution of adult aquatic insects to spider diets was determined using a two-source mixing model. Adult aquatic insects made up over 40% of spider diets adjacent to the stream, but

AB - Adult aquatic insects emerging from streams can subsidize riparian food webs, but little is known of the spatial extent of these subsidies. Stable isotope (15N) enrichment of aquatic insects, principally a species of stonefly (Plecoptera: Leuctridae), emerging from an upland stream was used to trace the subsidy from the stream ecosystem to riparian spiders (Lycosidae). The downstream profile of spider δ15N correlated closely with that of adult stoneflies, indicating that they were deriving nutrition from aquatic sources. The contribution of adult aquatic insects to spider diets was determined using a two-source mixing model. Adult aquatic insects made up over 40% of spider diets adjacent to the stream, but

U2 - 10.1111/j.0906-7590.2005.04020.x

DO - 10.1111/j.0906-7590.2005.04020.x

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JO - Ecography

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The lateral extent of the subsidy from an upland stream to riparian lycosid spiders

Abstract

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