Utilization of Dissolved Organic Matter (DOM), from Living Macrophytes, by Pulmonate Snails: Implications to the “Food Web” and “Module” Concepts

Amendment of sediments with a carbonaceous resin reduces bioavailability of polycyclic aromatic hydrocarbons

“…Finally, it may be that there are characteristics of the resin and/or interaction of the resin with the sediment that result in suboptimal conditions for benthic animal colonization and reproduction. For instance, Ambersorb amendment substantially reduced pore-water DOC concentrations (72% in measured samples); other studies have shown that dissolved organic material can serve as a direct or indirect source of nutrition for benthic invertebrates [e.g., [25][26][27]. Hence, resin-induced decreases in pore-water DOC could affect benthic invertebrate reproduction (bioaccumulation test with SH ϩ resin) and/or desirability of benthic habitats (field study colonization and laboratory sediment avoidance with SH ϩ resin).…”

Amendment of sediments with a carbonaceous resin reduces bioavailability of polycyclic aromatic hydrocarbons

“…Finally, it may be that there are characteristics of the resin and/or interaction of the resin with the sediment that result in suboptimal conditions for benthic animal colonization and reproduction. For instance, Ambersorb amendment substantially reduced pore-water DOC concentrations (72% in measured samples); other studies have shown that dissolved organic material can serve as a direct or indirect source of nutrition for benthic invertebrates [e.g., [25][26][27]. Hence, resin-induced decreases in pore-water DOC could affect benthic invertebrate reproduction (bioaccumulation test with SH ϩ resin) and/or desirability of benthic habitats (field study colonization and laboratory sediment avoidance with SH ϩ resin).…”

Particle selection by snail hosts of human schistosomes in relation to their survival strategies and possible control by ‘environmental antibodies’

“…However, the ability of B. glabrata to ingest large quantities of sand (Thomas, Nwanko & Sterry 1985; Schmolder & Becker 1990) indicates that pulmonate snails can also be ‘deposit feeders’ or ‘collector–gatherers’ (Allan 1995). These observations, combined with the capability of B. glabrata to use cilia for suspension or filter feeding and thus accumulate dissolved organic matter transintegumentally (Thomas & Kowalczyk 1997), further illustrates their ability to exploit several feeding niches.…”

“…16; Sterry, Thomas & Patience 1985; Daldorph & Thomas 1990; Thomas 1997). Snails can accumulate DOM either transintegumentally or during passage through the gut (Thomas, Sterry & Patience 1984; Thomas, Kowalczyk & Somasundaram 1990; Thomas & Kowalczyk 1997; Eaton & Thomas 1999). Snail faeces also release nutrients, in the form of inorganic and organic matter, as well as microbial colonizers into the sand matrix.…”

Rare, threatened and alien species in the gastropod communities in the clay pit ponds in relation to the environmental factors (The Ciechanowska Upland, Central Poland)

“…Jones et al (2000) found that the relationships among macrophytes, periphyton and gastropods did not depend on mutualism. However, Thomas and Kowalczyk (1997) obtained the opposite result. According to them, the pulmonate gastropods take up and metabolize dissolved organic carbon (DOC), which is produced by macrophytes.…”

Amendment of sediments with a carbonaceous resin reduces bioavailability of polycyclic aromatic hydrocarbons

“…Finally, it may be that there are characteristics of the resin and/or interaction of the resin with the sediment that result in suboptimal conditions for benthic animal colonization and reproduction. For instance, Ambersorb amendment substantially reduced pore-water DOC concentrations (72% in measured samples); other studies have shown that dissolved organic material can serve as a direct or indirect source of nutrition for benthic invertebrates [e.g., [25][26][27]. Hence, resin-induced decreases in pore-water DOC could affect benthic invertebrate reproduction (bioaccumulation test with SH ϩ resin) and/or desirability of benthic habitats (field study colonization and laboratory sediment avoidance with SH ϩ resin).…”

Particle selection by snail hosts of human schistosomes in relation to their survival strategies and possible control by ‘environmental antibodies’

“…However, the ability of B. glabrata to ingest large quantities of sand (Thomas, Nwanko & Sterry 1985; Schmolder & Becker 1990) indicates that pulmonate snails can also be ‘deposit feeders’ or ‘collector–gatherers’ (Allan 1995). These observations, combined with the capability of B. glabrata to use cilia for suspension or filter feeding and thus accumulate dissolved organic matter transintegumentally (Thomas & Kowalczyk 1997), further illustrates their ability to exploit several feeding niches.…”

“…16; Sterry, Thomas & Patience 1985; Daldorph & Thomas 1990; Thomas 1997). Snails can accumulate DOM either transintegumentally or during passage through the gut (Thomas, Sterry & Patience 1984; Thomas, Kowalczyk & Somasundaram 1990; Thomas & Kowalczyk 1997; Eaton & Thomas 1999). Snail faeces also release nutrients, in the form of inorganic and organic matter, as well as microbial colonizers into the sand matrix.…”

Rare, threatened and alien species in the gastropod communities in the clay pit ponds in relation to the environmental factors (The Ciechanowska Upland, Central Poland)

“…Jones et al (2000) found that the relationships among macrophytes, periphyton and gastropods did not depend on mutualism. However, Thomas and Kowalczyk (1997) obtained the opposite result. According to them, the pulmonate gastropods take up and metabolize dissolved organic carbon (DOC), which is produced by macrophytes.…”

Amendment of sediments with a carbonaceous resin reduces bioavailability of polycyclic aromatic hydrocarbons

“…Finally, it may be that there are characteristics of the resin and/or interaction of the resin with the sediment that result in suboptimal conditions for benthic animal colonization and reproduction. For instance, Ambersorb amendment substantially reduced pore-water DOC concentrations (72% in measured samples); other studies have shown that dissolved organic material can serve as a direct or indirect source of nutrition for benthic invertebrates [e.g., [25][26][27]. Hence, resin-induced decreases in pore-water DOC could affect benthic invertebrate reproduction (bioaccumulation test with SH ϩ resin) and/or desirability of benthic habitats (field study colonization and laboratory sediment avoidance with SH ϩ resin).…”

Particle selection by snail hosts of human schistosomes in relation to their survival strategies and possible control by ‘environmental antibodies’

“…However, the ability of B. glabrata to ingest large quantities of sand (Thomas, Nwanko & Sterry 1985; Schmolder & Becker 1990) indicates that pulmonate snails can also be ‘deposit feeders’ or ‘collector–gatherers’ (Allan 1995). These observations, combined with the capability of B. glabrata to use cilia for suspension or filter feeding and thus accumulate dissolved organic matter transintegumentally (Thomas & Kowalczyk 1997), further illustrates their ability to exploit several feeding niches.…”

“…16; Sterry, Thomas & Patience 1985; Daldorph & Thomas 1990; Thomas 1997). Snails can accumulate DOM either transintegumentally or during passage through the gut (Thomas, Sterry & Patience 1984; Thomas, Kowalczyk & Somasundaram 1990; Thomas & Kowalczyk 1997; Eaton & Thomas 1999). Snail faeces also release nutrients, in the form of inorganic and organic matter, as well as microbial colonizers into the sand matrix.…”

Rare, threatened and alien species in the gastropod communities in the clay pit ponds in relation to the environmental factors (The Ciechanowska Upland, Central Poland)

“…Jones et al (2000) found that the relationships among macrophytes, periphyton and gastropods did not depend on mutualism. However, Thomas and Kowalczyk (1997) obtained the opposite result. According to them, the pulmonate gastropods take up and metabolize dissolved organic carbon (DOC), which is produced by macrophytes.…”