The effects of riparian logging on terrestrial invertebrate inputs into forested headwater streams

Studinski, Jered M.; Hartman, Kyle J.

doi:10.1007/s10750-014-2036-9

Cited by 9 publications

(15 citation statements)

References 39 publications

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“…We did not collect concurrent drift samples for the present study, so prey selectivity could not be established. However, it appears that despite the availability of large terrestrial invertebrate taxa in the 90T reaches (Studinski and Hartman 2015), Brook Trout instead fed on aquatic prey. Despite the differences in the diets and feeding levels that were observed across riparian harvest disturbance levels, we found no differences in the lengths, relative weights, or abundance of Brook Trout from the treatment and control reaches.…”

Section: Discussionmentioning

confidence: 99%

“…Given this, natural disturbances or riparian management activities that alter the riparian plant community may change the availability of food for fishes. Large‐scale harvests of riparian trees would certainly alter the terrestrial insect community and likely decrease the input of terrestrial invertebrates to stream fish (Inoue et al 2013; Studinski and Hartman 2015). Depending on the silvicultural method and spatial and temporal scale, timber harvest can quickly decrease the abundance of terrestrial invertebrates.…”

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confidence: 99%

“…Depending on the silvicultural method and spatial and temporal scale, timber harvest can quickly decrease the abundance of terrestrial invertebrates. Terrestrial invertebrate abundance may increase to above pre‐timber‐harvest levels during regeneration in subsequent years (Schowalter et al 1981) but may be composed of different taxa (Studinski and Hartman 2015) that may not be equivalent food sources for stream fishes. Riparian harvest has further been shown to decrease leaf litter inputs (Hetrick et al 1998; Kreutzweiser et al 2005).…”

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confidence: 99%

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Riparian Timber Harvest Intensity Affects Diets of Appalachian Brook Trout

Niles

Hartman

2021

Trans Am Fish Soc

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Stream-dwelling Brook Trout Salvelinus fontinalis rely heavily on terrestrial invertebrates, especially when aquatic prey is limited. We examined the effects of an experimental harvest of riparian timber on the diet and condition of Brook Trout in late summer. We evaluated the effects of two riparian harvest intensities (50% and 90% of the basal area harvest) in each of two streams on the diet, consumption, abundance, and condition of Brook Trout in summer. The diets and consumption patterns of Brook Trout were affected by the percentage of riparian timber harvest. Timber harvest increased the use of aquatic invertebrates-primarily via increased consumption of crayfish. In the 90% treatments, the use of terrestrial invertebrates by Brook Trout declined primarily due to the decreased use of Lepidoptera. Overall, consumption levels in the 50% treatments were nearly double those in the reference or 90% treatments. A common forestry best management practice is to limit riparian harvest to 50% of the basal area. Provided water quality and quantity are not affected, our study suggests that a 50% timber harvest limitation in the riparian area may provide at least a temporary boost in consumption due to an increase in the use of aquatic insects.

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Section: Discussionmentioning

confidence: 99%

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Riparian Timber Harvest Intensity Affects Diets of Appalachian Brook Trout

Niles

Hartman

2021

Trans Am Fish Soc

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“…These vegetation responses may have important implications for wildlife habitat (O'Keefe et al, 2013;Clipp and Anderson, 2014;Maigret et al, 2014;Studinski and Hartman, 2015) and other ecosystem functions such as biogeochemical cycling (Elliott et al, 2015) and ecohydrology Bosch et al, 2014;Boggs et al, 2015). Lichens and mosses could also be influenced by partial harvests (Dynesius and Hylander, 2007;Ray et al, 2015), and they may respond differently than vascular plants.…”

Section: Management Implicationsmentioning

confidence: 99%

Effects of riparian zone buffer widths on vegetation diversity in southern Appalachian headwater catchments

Elliott

Vose

2016

Forest Ecology and Management

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a b s t r a c tIn mountainous areas such as the southern Appalachians USA, riparian zones are difficult to define. Vegetation is a commonly used riparian indicator and plays a key role in protecting water resources, but adequate knowledge of floristic responses to riparian disturbances is lacking. Our objective was to quantify changes in stand-level floristic diversity of riparian plant communities before (2004) and two, three, and seven years after shelterwood harvest using highlead cable-yarding and with differing nocut buffer widths of 0 m, 10 m, and 30 m distance from the stream edge. An unharvested reference stand was also studied for comparison. We examined: (1) differences among treatment sites using a mixed linear model with repeated measures; (2) multivariate relationships between ground-layer species composition and environmental variables (soil water content, light transmittance, tree basal area, shrub density, and distance from stream) using nonmetric multidimensional scaling; and (3) changes in species composition over time using a multi-response permutation procedure. We hypothesized that vegetation responses (i.e., changes in density, species composition, and diversity across the hillslope) will be greatest on harvest sites with an intermediate buffer width (10-m buffer) compared to more extreme (0-m buffer) and less extreme (30-m buffer and no-harvest reference) disturbance intensities. Harvesting initially reduced overstory density and basal area by 83% and 65%, respectively, in the 0-m buffer site; reduced by 50% and 74% in the 10-m buffer site; and reduced by 45% and 29% in the 30-m buffer site. Both the 0-m and 10-m buffer sites showed increased incident light variability across the hillslope after harvesting; whereas, there was no change in the 30-m and reference sites over time. We found significant changes in midstory and ground-layer vegetation in response to harvesting with the greatest responses on the 10-m buffer site, supporting our hypotheses that responses will be greatest on sites with intermediate disturbance. Ground-layer species composition differed significantly over time in the 0-m buffer and 10-m buffer sites (both P < 0.0001), but did not change in the 30-m buffer and reference sites (both P > 0.100). Average compositional dissimilarity increased after seven years, indicating greater withinstand heterogeneity (species diversity) after harvesting. These vegetation recovery patterns provide useful information for evaluating management options in riparian zones in the southern Appalachians.Published by Elsevier B.V.

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“…In most temperate riparian ecosystems, ants are ubiquitous, common generalist consumers (Tillberg et al ., ; Lach et al ., ), thus making them valuable model organisms through which to understand trophic dynamics in riverine landscapes. Additionally, a suite of both terrestrial and aquatic consumers—including salamanders, bats, birds, and fish—prey on ants, suggesting that changes in ant community dynamics may have broad food‐web implications (Anderson and Mathis, ; Studinski and Hartman, ). Riparian ants have also been shown to opportunistically use riverine‐derived prey subsidies, which indicates that they also might represent an important aquatic‐to‐terrestrial trophic pathway (Paetzold et al ., ).…”

Section: Introductionmentioning

confidence: 67%

Riverine Landscape Patches Influence Trophic Dynamics of Riparian Ants

Tagwireyi

Sullivan

2016

River Research & Apps

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Food webs in riparian corridors are increasingly viewed as embedded in complex riverine landscapes characterized by an amalgam of aquatic, semi‐aquatic, and terrestrial habitats. However, the influence of riverine landscape pattern on trophic dynamics of riparian consumers remains largely unknown. We used naturally abundant stable isotope ratios (δ15N) to compare trophic structure of ants (Formica subsericea) among riparian patch types (crop, grass/herbaceous, gravel bar, lawn, mudflat, shrub, swamp, and woody vegetation) at 12 riverine landscapes distributed along an urban‐rural landscape gradient of the Scioto River, Ohio, USA. We expected that the diet of F. subsericea, a common generalist consumer, would reflect local prey availability and thus differences in trophic dynamics among patch types. Mean ant δ15N was higher in crop patches than in any other patch type, and was lowest in grass/herbaceous, lawn, shrub, and woody vegetation patches, suggesting that patch type was associated with trophic position of F. subsericea. We also found that the range of δ15N, and thus trophic breadth, was significantly different by patch type, with woody vegetation exhibiting the greatest spread. Variability in canopy, tree and shrub cover, and the degree of urban development was positively correlated with δ15N range (R2 = 0.78), pointing to the role of habitat structure in mediating trophic breadth of riparian ants. These findings provide evidence that riverine landscape pattern can strongly influence trophic dynamics of riparian arthropods. Copyright © 2016 John Wiley & Sons, Ltd.

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The effects of riparian logging on terrestrial invertebrate inputs into forested headwater streams

Cited by 9 publications

References 39 publications

Riparian Timber Harvest Intensity Affects Diets of Appalachian Brook Trout

Riparian Timber Harvest Intensity Affects Diets of Appalachian Brook Trout

Effects of riparian zone buffer widths on vegetation diversity in southern Appalachian headwater catchments

Riverine Landscape Patches Influence Trophic Dynamics of Riparian Ants

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