A Quantitative Artificial Substrate Sampler for Benthic Macroinvertebrates

Jacobi, Gerald Z.

doi:10.1577/1548-8659(1971)100<136:aqassf>2.0.co;2

Cited by 14 publications

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“…It provides a relatively large colonization area, about 0.45 m2 without detritus, because of the large amount of external and internal surfaces of the plastic sheet surrounding the rocks. This estimated area for colonization exceeds that of other commonly used artificial substrates which are: 0.1 m2 (slightly over 1 ft2) for the 8-squareplate mulitple plate sampler (Hester and Dendy, 1962): 0.13 m2 for the 14circular-plate sampler (Weber, 1973); 0.16 m2 for the 14-square-plate sampler (Fullner, 1971); 0.27 m2 for the 24-circular-plate sampler (Mason, etal., 1973): (Emmett, 1975 and 0.2 to 0.3 m2 for the rock or sphere filled barbeque basket (Fullner, 1971;Jacobi, 1971;Mason, e t d . 1973).…”

Section: Methodsmentioning

confidence: 99%

DETRITUS ABUNDANCE AND BENTHIC INVERTEBRATE CATCH IN ARTIFICIAL SUBSTRATE SAMPLES FROM MOUNTAIN STREAMS¹

Slack

Tilley

Hahn

1982

J American Water Resour Assoc

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Artificial substrates were designed using rock filled polyethylene bags which were perforated with holes. The substrates trapped waterborne sediment and detritus which enhanced microhabitat complexity. Colonization was compared in side‐by‐side tests with multiple plate samplers in mountain streams ranging from second to seventh order. After 41 days the bag samples contained more sediment and detritus and more animals than did multiple plates. Plastic bags exceeded multiple plate samples by a factor of nearly 8 for individuals and 1.5 for taxa expressed as numbers/sampler. Although detritus amounts differed significantly between samplers, catch composition was similar in habitat preference and functional groups. Most taxa were “lotic erosional” or “lotic erosional‐depositional” detritivores. The plastic bags better represented the streambed fauna judged by their greater similarity to dip net samples. Bag samplers had 4.5 × the colonization area of multiple plates, hence would be expected to support more species. Catch/m2 of colonization area was not significantly different between samplers. Functionally the plastic bags act as detritus retention devices, offering a diverse, highly dynamic microhabitat for colonization. Results are interpretable in terms of research on microdistribution of stream benthos and the river continuum model. This study supports the conclusion that stream benthos abundance and diversity are related to the amount of detritus. Maximum diversity and numbers of individuals occurred in samples from third and fourth order streams. Grazers reached peak abundances in the same streams where the continuum model predicts P>R Shredders reached maximum abundances in third and fourth order streams where the riparian canopy was greatest. Predator abundance changed little with stream size. Although bag samples required more sorting time, the samplers are catch effective, inexpensive, and adaptable.

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Section: Methodsmentioning

confidence: 99%

DETRITUS ABUNDANCE AND BENTHIC INVERTEBRATE CATCH IN ARTIFICIAL SUBSTRATE SAMPLES FROM MOUNTAIN STREAMS¹

Slack

Tilley

Hahn

1982

J American Water Resour Assoc

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“…Except for one instance, oligochaetes comprised greater percentages of the total organisms in multiplates than in baskets. Jacobi (1971) emphasized that the use of spheres or cubes in baskets permits 'quantitative' sampling since the surface area can be calculated. However, some macroinvertebrates do not colonize surfaces of spheres in a random fashion and exhibit 'clumped' distribution patterns.…”

Section: Effects Of Sampler Design and Compositionmentioning

confidence: 99%

Factors affecting the performance of basket and multiplate macroinvertebrate samplers

et al. 1973

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The maximum number and diversity of macroinvertebrates from limestone-filled basket samplers were obtained by placing the samplers at a depth of 1 ft (0-3 m) below the water's surface for 8 weeks. The letigth ofthe exposure period had a greater effect on the number of organisms than depth of placement. The effects of longer exposure times (8 weeks, compared to 6 and 4 weeks) on Ihe number and diversity of organisms inhabiting baskets were more pronounced during cold weather. In rivers during the summer months, samples contain a variety of aquatic insects, which contributed as much as 95 % of the total number of individuals. The occurrence of some macroinvertebrate species was related to the depth of sampler placement, e.g. the caddisfly Cyrnellus fraternus was more abundant at depths exceeding 4ft {I•2 m); whereas the mayfly Stenonema interpunctatum was more abundant in samplers near the surface.The community diversity index (i) of collections on the same date varied by as much as two units depending on the depth of basket placement and length of exposure period, indicating that consistent practices in sampler installation and analysis are required for comparison of collections in water quality investigations.Baskets touching bottom accumulated greater amounts of sediments than surface satnplers and generally showed greater variability within pairs.In the Ohio River, three replicate baskets can be expected {F = 0 95) to provide an estimate ofthe true mean number of macroinvertebrates within ±20% ofthe sample mean and contain 71 % of the taxa in 10 replicates. However, estimates of sampling precision based on replicate series may vary considerably depending on time, place, number of replicates and natural history ofthe organisms.Baskets filled with 2-in. (5-1-cm) diameter porcelain spheres collect samples comparable in total abundance and diversity to baskets filled with 2-in. (5-1-cm) diameter limestone. However, the taxonomic groups occur in different proportions on the two types of substrates.Hardboard multiplates of l-ft^ (Ol-m^) surface area with -\-(0-32) or ^-in. (0-64-cm) spacings collect significantly greater numbers of individuals than porcelain multiplates with the same spacings. However, differences between samples from the same substrate type are not significant. Multiplates of the same surface area and plate spacing collect substantially the same number of taxa regardless of substrate type.Basket samplers (3-2 ft^ -0-3 m^ surface area) collect a greater abundance and diversity of organisms than the standard 1 ft^ = 0-1 m^ hardboard multiplates. The performance ofthe samplers in terms of abundance and diversity is equalized, however, by increasing the surface area of the multiplate to that of the basket. IntroductionField studies of effects of water quality on benthic macroinvertebrates are often handicapped by the problem of sampling similar, natural substrates suitable for colonization at all sampling stations. The problem is especially difficult in rivers, where fluctuations in hydrologic condition...

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“…Artificial substrates consisted of cylindrical wire baskets, similar to that described by Mason, Anderson & Morrison (1967), containing cement spheres (Jacobi, 1971), and multiplate substrates (Hester & Dendy, 1962). Baskets were 28 cm long and 18 cm in diameter; spheres were 7.5 cm in diameter.…”

Section: Methodsmentioning

confidence: 99%

Colonizing macroinvertebrates in the Upper Mississippi River with a comparison of basket and multiplate samplers *

Hall

1982

Freshwater Biology

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SUMMARY. Colonizing aquatic macroinvertebrates were collected from two kinds of artificial substrate placed on wing dams in Pool 13 of the Upper Mississippi River in September 1978. Thirty‐one taxa were collected from basket samplers containing cement spheres and twenty‐one taxa from multiplate samplers constructed from tempered hardboard. Hydro‐psychidae (Trichoptera), especially Cheumatopsyche sp., Potamyla flava and Hydropsyche sp., were the dominant macroinvertebrates which colonized both samplers. Basket samplers had a significantly greater macroinvertebrate density, biomass and number of taxa compared with multiplate samplers. Precision of the arithmetic mean for density, biomass and number of taxa was 19.9, 18.3 and 8.1% for basket samplers and 18.8, 18.7 and 8.5% for multiplate samplers. The number of sampling units required for a precision of 20% for macroinvertebrate density, biomass and number of taxa was 13, 11 and 2 for basket samplers and 11, 11 and 2 for multiplate samplers. Basket samplers with 7.5‐cm cement spheres are recommended for use instead of multiplate samplers.

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A Quantitative Artificial Substrate Sampler for Benthic Macroinvertebrates

Cited by 14 publications

References 0 publications

DETRITUS ABUNDANCE AND BENTHIC INVERTEBRATE CATCH IN ARTIFICIAL SUBSTRATE SAMPLES FROM MOUNTAIN STREAMS¹

DETRITUS ABUNDANCE AND BENTHIC INVERTEBRATE CATCH IN ARTIFICIAL SUBSTRATE SAMPLES FROM MOUNTAIN STREAMS¹

Factors affecting the performance of basket and multiplate macroinvertebrate samplers

Colonizing macroinvertebrates in the Upper Mississippi River with a comparison of basket and multiplate samplers *

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A Quantitative Artificial Substrate Sampler for Benthic Macroinvertebrates

Cited by 14 publications

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DETRITUS ABUNDANCE AND BENTHIC INVERTEBRATE CATCH IN ARTIFICIAL SUBSTRATE SAMPLES FROM MOUNTAIN STREAMS1

DETRITUS ABUNDANCE AND BENTHIC INVERTEBRATE CATCH IN ARTIFICIAL SUBSTRATE SAMPLES FROM MOUNTAIN STREAMS1

Factors affecting the performance of basket and multiplate macroinvertebrate samplers

Colonizing macroinvertebrates in the Upper Mississippi River with a comparison of basket and multiplate samplers *

Contact Info

Product

Resources

About

DETRITUS ABUNDANCE AND BENTHIC INVERTEBRATE CATCH IN ARTIFICIAL SUBSTRATE SAMPLES FROM MOUNTAIN STREAMS¹

DETRITUS ABUNDANCE AND BENTHIC INVERTEBRATE CATCH IN ARTIFICIAL SUBSTRATE SAMPLES FROM MOUNTAIN STREAMS¹