Uptake of organic material by aquatic invertebrates. VI. Role of epiflora in apparent uptake of glycine by marine crustaceans

1969 ◽  
Vol 4 (3) ◽  
pp. 243-249 ◽  
Author(s):  
J. W. Anderson ◽  
G. C. Stephens
Keyword(s):  
Organic Material ◽  
Aquatic Invertebrates ◽  
Marine Crustaceans

Effects of micro-, meio- and macroinvertebrates associated with burial on the decomposition of an aquatic macrophyte (Vallisneria natans) in a eutrophic shallow lake in China

2019 ◽  
Vol 70 (4) ◽  
pp. 554
Author(s):  
Shaojun Chen ◽  
Dong Wang
Keyword(s):  
Aquatic Invertebrates ◽  
Microbial Respiration ◽  
Aquatic Macrophyte ◽  
Mesh Size ◽  
Relative Importance ◽  
Vallisneria Natans ◽  
Plant Decomposition ◽  
Invertebrate Abundance ◽  
Average Contribution

Aquatic invertebrates play an important role in plant decomposition. However, little information is available regarding the relative importance of micro-, meio- and macroinvertebrates in this process, particularly their role in the decomposition of buried organic matter. To investigate the role of these invertebrates in the decomposition of the aquatic macrophyte Vallisneria natans, leaves of V. natans were placed in litterbags with four different mesh sizes (0.025, 0.042, 0.5 and 5mm) and the bags were either incubated at the sediment–water (SW) interface or buried at a depth of 10cm (B10) for 60 days in Lake Nanhu, China, in July 2015. Increased mesh size significantly increased the loss of plant mass. The decomposition rate ranged from 0.0173 to 0.0467day–1 in the SW treatment, and from 0.0083 to 0.0280day–1 in the B10 treatment. Excluding microinvertebrates, burial significantly affected microbial respiration and invertebrate abundance. Increased mesh size increased invertebrate abundance and richness, but did not significantly affect microbial respiration in either treatment. The average contribution of micro-, meio- and macroinvertebrates and microbes to plant mass loss in the SW treatment was 23.1, 13.5, 7.0 and 56.5% respectively, compared with 19.7, 24.5, 12.3 and 43.5% respectively in the B10 treatment. The results of this study reveal the important but underestimated role of micro- and meioinvertebrates in macrophyte decomposition.

Role of organic material in the plasticity of Bothkennar clay

Géotechnique ◽  
1999 ◽  
Vol 49 (4) ◽  
pp. 529-535 ◽  
Author(s):  
M. A. Paul ◽  
B. F. Barras
Keyword(s):  
Organic Material

The role of organic material in the distribution of Mo, V and Cr in coal fields

1971 ◽  
Vol 66 (7) ◽  
pp. 1075-1078 ◽  
Author(s):  
Maria Szilagyi
Keyword(s):  
Organic Material ◽  
Coal Fields

The Distribution of Settled Larvae of the Bryozoans Alcyonidium Hirsutum (Fleming) and Alcyonidium Polyoum (Hassall) on Fucus Serratus L.

1974 ◽  
Vol 54 (3) ◽  
pp. 665-676 ◽  
Author(s):  
P. J. Hayward ◽  
Paul H. Harvey
Keyword(s):  
Aquatic Invertebrates ◽  
Marine Invertebrate ◽  
Substrate Selection ◽  
Sessile Invertebrates ◽  
Fucus Serratus ◽  
The Subject ◽  
Invertebrate Larvae ◽  
Experi Mental Result ◽  
Selection Of

The spatial settlement of marine invertebrate larvae is not a random process. The distribution of the adults of a particular species is influenced by the behavioural responses of the animal to a range of environmental stimuli which, in the case of many sessile invertebrates, result in the display of clear substrate selection. The role of habitat selection in determining the distribution of aquatic invertebrates has been the subject of a review by Meadows & Campbell (1972). The selection of algal substrata by the larvae of various intertidal species of Bryozoa has been demonstrated by Ryland (1959); among these, the ctenostomatous bryozoans Alcyonidium hirsutum and A. polyoum were shown to exhibit a strong preference for fronds of the alga Fucus serratus, an experi-mental result which accorded well with the distribution of the two species on the shore (Ryland, 1962).

The role of organic material in atmospheric aerosols

1978 ◽  
Vol 116 (2-3) ◽  
pp. 283-292 ◽  
Author(s):  
R. Jaenicke
Keyword(s):  
Atmospheric Aerosols ◽  
Organic Material

scholarly journals Influence of gut morphology on passive transport of freshwater bryozoans by waterfowl in Doñana (southwestern Spain)

2004 ◽  
Vol 82 (6) ◽  
pp. 835-840 ◽  
Author(s):  
Jordi Figuerola ◽  
Andy J Green ◽  
Katrina Black ◽  
Beth Okamura
Keyword(s):  
Aquatic Invertebrates ◽  
Bird Species ◽  
Passage Time ◽  
Passive Dispersal ◽  
Long Distance Dispersal ◽  
Long Distance ◽  
Active Dispersal ◽  
Intestine Length ◽  
Internal Transport

Waterbirds have been proposed as important vectors for the passive dispersal of those aquatic invertebrates and plants that lack a capacity for active dispersal between isolated water bodies. We analysed the frequency of internal transport of bryozoan propagules (statoblasts) by waterbirds in Doñana, Spain, by examining their presence in the intestines and ceca of dead birds and analysing the role of different aspects of gut characteristics in explaining variation in the presence/absence and abundance of statoblasts. Of the 228 samples examined, 7.9% presented intact statoblasts of Plumatella fungosa (Pallas, 1768), Plumatella emarginata Allman, 1844, and two unidentified Plumatella species. For a given bird species, individuals with heavier gizzards and shorter ceca had a lower incidence and abundance of statoblasts in the lower gut. Grit mass and intestine length were unrelated to the presence or abundance of statoblasts. Our results suggest that waterbirds frequently transport bryozoans on a local scale, with lighter gizzards and longer ceca favouring such transport. Lighter gizzards are likely to destroy fewer propagules before they reach the lower gut. Species and individuals with longer ceca are particularly good candidates for long-distance dispersal of bryozoans, given the longer passage time of propagules that enter the ceca.

The presence, nature, and role of gut microflora in aquatic invertebrates: A synthesis

1993 ◽  
Vol 25 (3) ◽  
Author(s):  
JeanM. Harris
Keyword(s):  
Aquatic Invertebrates ◽  
Gut Microflora

The role of dissolved organic material in the nutrition and survival of marine dinoflagellates

Phycologia ◽  
1982 ◽  
Vol 21 (1) ◽  
pp. 17-26 ◽  
Author(s):  
K. Richardson ◽  
G. E. Fogg
Keyword(s):  
Organic Material ◽  
Marine Dinoflagellates

scholarly journals UPTAKE OF ORGANIC MATERIAL BY AQUATIC INVERTEBRATES. IV. THE INFLUENCE OF SALINITY ON THE UPTAKE OF AMINO ACIDS BY THE BRITTLE STAR, OPHIACTIS ARENOSA

1966 ◽  
Vol 131 (1) ◽  
pp. 172-185 ◽  
Author(s):  
GROVER C. STEPHENS ◽  
RAGHUNATH A. VIRKAR
Keyword(s):  
Amino Acids ◽  
Organic Material ◽  
Aquatic Invertebrates ◽  
Brittle Star
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