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abundance of shredders

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abundance of shredders

Leaf-associated macroinvertebrate assemblage and leaf litter …

where C represents the respective community metric of either EPT or shredders (i.e., abundance, Shannon diversity, or biomass), V the riparian vegetation (two levels: forested and non-forested) and R the region (two levels: north and south). We included stream as a random factor to account for differences of background …

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Patterns of flow, leaf litter and shredder abundance in a …

The seasonal dynamics of leaf litter and associated consumers ("shredders") in tropical streams are not well documented. We investigated the occurrence of litter (density and age composition) and shredders through late dry, wet and early dry seasons in an Australian rainforest stream. Leaf litter packs of varying density and leaf age …

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Contribution of macroinvertebrate shredders and aquatic hyphomycetes …

Shredders play a crucial role in litter decomposition in streams. However, in oceanic islands, many streams have low shredder density and richness, and microbes seem to be the main litter decomposers. Here, we evaluate the effects of shredders and aquatic hyphomycetes on litter decomposition in insular streams. Three leaf species …

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Effects of riparian vegetation removal on the functional …

The present study aims to verify possible changes in the functional feeding group (FFG) structure of benthic macroinvertebrates related to changes in headwater streams riparian vegetation. Streams with this vegetation fully present (forested), present only on one bank (intermediate) and absent (pasture) were studied. In general, there …

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Relationships cover gradient of in shredders, tropical …

ship between shredders and leaves, we analyzed along a gradient of 8-93% canopy cover biomass and abundance of shredders, ac-cumulated leaves and breakdown rates of local leaves to verify if these parameters were related to shade conditions and to each other. Three hypotheses were tested: i) shredder biomass, accumulated leaves and breakdown ...

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(PDF) Shredders in Malaysia: Abundance and richness are …

As expected, highland sites supported higher abundance and diversity of shredders (9–15 species per site) than did lowland sites (3–8 species per site). Shredder densities were similar among ...

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Macroinvertebrate functional feeding group alterations in …

The proportion of shredders in this study was dependent upon high canopy cover (Table 6), indicating that riparian vegetation benefits their subsistence. In this study, the abundance of shredders was very low even in less impacted stream order 1 sites; however, abundances decreased further along the land-use gradient (Table 4).

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Estimating Macroinvertebrate Biomass for Stream Ecosystem …

The presence and abundance of macroinvertebrate FFGs reflect the availability of respective food resources; in turn, the abundance and availability of these food resources depend on stream ecosystem conditions (Table 1). For scrapers and herbivorous shredders, critical conditions include the levels of light and nutrients.

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Full article: Spatial distribution patterns of benthic

The highest abundance of shredders in both rivers was at upstream sites (DS1 and SS1), more scrapers were found at midstream sites (DS3 and SS2), collector-gatherers and collector-filterers increased …

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Ecological importance of low-order streams to …

The abundance of shredders and collector-gatherers was higher in first-order compared to the second-order sites while scrapers were more abundant in the second-order sites, which were wider with an open canopy supporting abundant primary production. Even though the RCC model predicts these changes in the transition from …

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Boyero et al 2011 Global distribution of shredders. Ecology …

Shredders in Malaysia: abundance and richness are greater in cool highland tropical streams. Journal of the North American Benthological Society 28:404–415. APPENDIX A Species, families, and orders of invertebrate shredders collected, and regions at which they were present (Ecological Archives E092-154-A1).

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Benthic macroinvertebrates of tropical streams: functional …

The low diversity and abundance of detrital shredders (DSH), and gathering (GC) and filtering (FC) collectors did not match the timing of evergreen leaf drop into the stream riparian zone. A possible explanation is likely due to the time require for the microorganisms to condition the recalcitrant evergreen leaves which delays rendering …

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Functional Feeding Groups: Shredders

While this is happening, larger organisms such as caddisflies start to break down bigger sections of the leaves by eating the leaf and digesting it. The shredders play an …

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Relationship between abundance of shredders and Habiat …

A negative relationship between the abundance of shredders and environmental changes in streams was also recorded in the Cerrado biome (Brasil et al. 2013) and Australian streams (Mangadze et al ...

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Contribution of aquatic shredders to leaf litter …

Therefore, the type of riparian vegetation has the potential to control the diversity and abundance of shredders and changes in riparian vegetation have the potential to affect the assemblages of ...

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The importance of macroinvertebrates in …

Shredders feed on larger pieces of organic matter such as leaves and woody debris. They include stoneflies (Figure 4) and some species of caddisflies. Collectors, such as blackflies and clams, gather …

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Is the diet of a typical shredder related to the physical …

Aiming to investigate the relationship between shredders and leaves, we analyzed along a gradient of 8-93% canopy cover biomass and abundance of shredders, accumulated leaves and breakdown rates ...

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Fine sedimentation affects CPOM availability and shredder abundance …

The results indicated that the increase of fine sediment in the river reduced the amount of coarse particulate organic matter, affecting the abundance of invertebrate shredders. In small alpine streams, where allochthonous organic matter is the main energy source, fine sedimentation reduces the availability of trophic resources, affecting the ...

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Shredders: species richness, abundance, and role in litter

Shredders appear to be scarce in many tropical streams, but few data are available about their abundance or role in litter breakdown in these systems. Shredder species richness, abundance, and biomass were investigated in 10 small streams (5 shaded, 5 unshaded) in Hong Kong as a step toward understanding the role of …

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Relationships of shredders, leaf processing and organic …

Aiming to investigate the relationship between shredders and leaves, we analyzed along a gradient of 8-93% canopy cover biomass and abundance of shredders, accumulated leaves and breakdown rates of local leaves to verify if these parameters were related to shade conditions and to each other.

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Aquatic Macroinvertebrates

As a result, aquatic ecologists have categorized the many species of aquatic macroinvertebrates into four functional feeding groups (Cummins 1973) which can be used to describe how aquatic ecosystems function: shredders, collectors, grazers (or …

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Shredders: species richness, abundance, and role in litter

Shredders appear to be scarce in many tropical streams, but few data are available about their abundance or role in litter breakdown in these systems. Shredder species richness, abundance, and biomass were investigated in 10 small streams (5 shaded, 5 unshaded) in Hong Kong as a step toward understanding the role of shredders in tropical Asian …

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In what type of streams would shredders be abundant? In …

The abundance of shredders in streams is influenced by several factors. One key factor is the availability of food resources, particularly leaf litter and woody debris. Shaded and forested streams receive a greater input of allochthonous organic matter, creating an abundant food source for shredders. Another factor is the physical structure …

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Abundance, population structure and production of …

Abundance, population structure and production of the macro-invertebrates belonging to the functional feeding group of the shredders were studied in the Ichkeul wetland, northern Tunisia, from ...

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Shredders: species richness, abundance, and role in litter …

Shredders were scarce in terms of species richness (a total of 6 obligate shredders and 2 facultative shredders) and abundance (mean = 2.0%, range = 0–7.7% of total …

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Abundance- and biomass-based metrics of functional …

Taxon richness, abundance and biomass of shredders were higher in forested sites, and scrapers were numerically dominant in mid-order streams, whereas collectors dominated agricultural and urban sites. Abundance-based metrics were better predictors of ecosystem attributes and displayed greater response to changes in stream …

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Leaf-associated macroinvertebrate assemblage and leaf litter …

The abundance of shredders varied from 0 to 660 individuals per leaf litter bag (mean abundance per bag ± SD: north forested: 76.63 ± 125.17; north non-forested: …

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Ecology of Macroinvertebrate Shredders in a Low …

ness, abundance, production, and temporal and spatial distribution of shredders in a sandy-bot-tomed, first-order stream on the Coastal Plain of ia. In addition, we provide informa-tion on the life histories and feeding habits of the dominant shredders, whose feeding was in-fluenced by leaf litter availability in the stream.

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Patterns of flow, leaf litter and shredder abundance in a …

In the AWT, shredders breed through the year (Benson & Pearson, 1988; Nolen & Pearson, 1992), but increase in abundance towards the end of the dry season (Pearson, 2014), paralleling the mainpeakinlitterfall. Shreddersmaybeactiveinlitter packs in both riffles and pools and, although shredder biomass, abundance and species richness are often

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Quality and quantity of leaf litter: Both are …

In this study, we explore how changes in the leaf litter quality and quantity influence the feeding preferences and growth of an invertebrate shredder (Potamophylax latipennis). To do so, we used …

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