Developments in Stream Ecosystem Theory

Minshall, G. Wayne; Cummins, Kenneth W.; Petersen, Robert C.; Cushing, Colbert E.; Bruns, D. A.; Sedell, James R.; Vannote, Robin L.

doi:10.1139/f85-130

Cited by 518 publications

(309 citation statements)

References 51 publications

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“…Nevertheless, there can be differences in abiotic and biotic aspects such as geomorphology, topography, chemistry and floral and faunal cornmunities. The strong linkage existing between strelms and their terrestrial surroundings is well established (Vannote et al 1980) and life-cycle, density, and biomass of stream macroinvertebrates are influenced by these variables (Vannote et al 1980, Gushing et al 1983, Minshall et al 1985. For instance growth rate and life cycle of some macroinvertebrates seem to be affected by food abundance (Cummins & Klug 1979) as well as food quality (Anderson & Cummins 1978, Ward & Cummins 1978.…”

Section: Introductionmentioning

confidence: 99%

Elm and maple processing rates : comparisons between and within streams

Gazzera

Cummins

Salmoiraghi³

1993

Ann. Limnol. - Int. J. Lim.

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Leaf breakdown rates of two species of elm (Ulmus) and two of maple (Acer) were investigated in two low order streams located in Western Maryland, U.S.A., and in Northern Appenins, Italy. Within each genus of leaf, one species was Italian and one was American. The role of maeroinvertebrate shredders in leaf processing was also investigated. In both streams within the same genus of leaf the Italian leaves disappeared faster than the American leaves. Within the same species, the leaves were decomposed more rapidly in the Italian stream. Shredder biomass was always significantly higher on the leaves retrieved from the Italian stream suggesting that shredders had an important role in detritus processing. On the contrary, the comparison between leaf species showed a poor correlation between shredder biomass and leaf breakdown rate. Three hypotheses are proposed. The fact that native leaves were not processed at a faster rate, compared to the exotic leaves, support the notion that shredders do not specialize on litter of a given leaf species, but rather on appropriately conditioned leaf Utter regardless of the species. Breakdown rates followed the same rank ordering in each stream : Acerpseudoplatanus > Ulmus minor > Ulmus americana > Acer rubrum indicating the existence of the same hierarchy in the availability of food to macroinvertebrates throughout the year. Pour chaque genre de feuille, une espèce était italienne et l'autre américaine. Le rôle des macroinvertébrés déchiqueteurs sur la décomposition des feuilles a été également étudié. Dans les 2 riviè-res, pour le même genre, les feuilles italiennes disparaissent plus vite que les américaines. Pour la même espèce, les feuilles étaient plus rapidement décomposées dans la rivière italienne. La biomasse des déchiqueteurs était toujours significativement plus élevée sur les feuilles extraites de la rivière italienne suggérant que les déchiqueteurs jouent un rôle important dans la décompositions. Au contraire, la comparaison entre les espèces de-feuille a montré une faible corrélation entre la biomasse des déchiqueteurs et le taux de décomposition foliaire.Trois hypothèses sont proposées. Le fait que les feuilles indigènes n'étaient pas décomposées plus rapidement que les exotiques conforte l'idée que les décomposeurs ne se spécialisent pas sur une espèce particulière de feuille, mais qu'ils sont plutôt tributaires du préconditionnement convenable de la litière, indépendamment de l'espèce de feuilles qui la compose.Les taux de décomposition suivent le même ordre dans chaque rivière : Acer pseudoplatanus > Ulmus minor > Ulmus americana > Acer rubrum ce qui indique l'existence de la même hiérarchie dans la nourriture disponible pour les macroinvertébrés pendant l'année.

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Section: Introductionmentioning

confidence: 99%

Elm and maple processing rates : comparisons between and within streams

Gazzera

Cummins

Salmoiraghi³

1993

Ann. Limnol. - Int. J. Lim.

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“…The question of how the structure and function of communities change from headwaters to river mouths in relation to the abiotic environment remains a central issue in the study of the biology of running water systems ( Vannote et al 1980, Statzner & Higler 1985, Minshall et al 1985, Meyer & Edwards 1990, Wiley et al 1990, Petts & Calow 1996, Miranda & Raborn 2000, Maamri et al 2005. Several investigations of river zooplankton have shown that abundance and species richness increase downstream though the information available for large South American Rivers is limited (José de , Saunders & Lewis 1989, Vasquez & Rey 1989.…”

Section: Introductionmentioning

confidence: 99%

Zooplankton of the Paraguay River : a comparison between sections and hydrological phases

Frutos

Neiff

2006

Ann. Limnol. - Int. J. Lim.

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Changes in the abundance, species richness and species diversity of zooplankton were studied in the Paraguay River. Fifty-nine sites were studied at two hydrological phases between Porto Cáceres (16º03'S-26º23'W) and the confluence with the Paraná (Argentine, 26º53'S-58º23'W), representing a distance of 2270 km. Zooplankton densities varied between 1 and 60 ind.l -1 at high water and between 11 and 100 ind.l -1 at low water. Multiple regression analysis revealed that the hydrological phase explained 64% of the variability in zooplankton density. Surveys found 196 taxa in the Paraguay River (including both the main course and its floodplain). The greater species richness was registered in the upper section. There were significant differences in the species richness and species diversity of Rotifera (Monogononta) between hydrological phases. In the main channel, the hydrological phase explained 54% of variability in species richness, whereas water temperature and electric conductivity explained less than 22% of the variability in species diversity. Rotifera was the most abundant group in both study periods. Despite the total number of species registered in the main channel, only six planktonic genera dominated the zooplankton assemblage (Polyarthra, Synchaeta, Filinia, Keratella and Lecane). The most abundant cladocerans belonged to Bosminidae (Bosminopsis sp.) and the dominant copepods were in the nauplii and juveniles stages. A longitudinal pattern in dominant taxa was not defined at high water. At low water, three species-site groups were separated in relation to environmental variables. The pulsing of the river determines the degree of connectivity with the floodplain and local features had a greater effect on zooplankton assemblages than large-scale landscape patterns.

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“…In the particular case of riparian, headwater wetlands, modifications in shoreline terrestrial vegetation to provide shading effects and allocthonous inputs of woody debris may facilitate the establishment of some benthic species through creation of more suitable habitat conditions (Vannote et al 1980, Minshall et al 1985. …”

Section: Resultsmentioning

confidence: 99%

Diversity Patterns of Invertebrate Fauna in Cattail Wetlands Receiving Acid Mine Drainage

Lacki¹

1990

ASMR

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Abstract. Invertebrate diversity patterns at a three-celled, 0.3 ha, cattail wetland, constructed in 1985 to receive mine drainage, were surveyed during May and June in 1988 and 1989. Three nearby sites, each comprised of three volunteer cattail cells, were also examined. Benthic invertebrates were collected using an Ekman dredge and volant insects were obtained with sticky traps covered with tangle-trap. Dredge samples were examined at the family level and sticky trap samples at the ordinal level.Substrates from the constructed wetland contained significantly fewer taxonomic families and total numbers of invertebrates than the other sites. Shannon-Weaver diversity indices (H') also demonstrated that the constructed wetland supported a simple community relative to the other sites; however, the number of invertebrate families in the constructed wetland increased from three in 1988 to eight in 1989. Dipteran larvae were the most abundant invertebrates in the sediments from the constructed wetland.The constructed wetland supported significantly higher numbers of volant insects than the other sites, but no difference in the number of taxonomic orders was found across sites. Shannon-Weaver diversity indices showed the constructed wetland to be intermediate in ordinal diversity relative to the other sites, with these values influenced by a site by year interaction effect. The number of orders of insects recorded in sticky trap samples at the constructed wetland increased from seven in 1988 to nine in 1989. The implications of these findings for assessing the overall value of surface mine wetlands are discussed.Additional key words: Aquatic invertebrates, diversity indices, surface mine wetlands.lpaper presented at the 1990 Mining and Reclamation Conference and Exhibition,

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Developments in Stream Ecosystem Theory

Cited by 518 publications

References 51 publications

Elm and maple processing rates : comparisons between and within streams

Elm and maple processing rates : comparisons between and within streams

Zooplankton of the Paraguay River : a comparison between sections and hydrological phases

Diversity Patterns of Invertebrate Fauna in Cattail Wetlands Receiving Acid Mine Drainage

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