scholarly journals Threshold of motion and settling velocities of mollusc shell debris: Influence of faunal composition

Sedimentology ◽  
2018 ◽  
Vol 66 (3) ◽  
pp. 895-916 ◽  
Author(s):  
Alissia Rieux ◽  
Pierre Weill ◽  
Dominique Mouaze ◽  
Clement Poirier ◽  
Farid Nechenache ◽  
...  
Keyword(s):  
Mollusc Shell ◽  
Faunal Composition ◽  
Shell Debris

scholarly journals Mollusc-shell debris derived from aquaculture can promote macrofaunal communities with a high bioturbation capacity

Aquaculture ◽  
2021 ◽  
pp. 737642
Author(s):  
Nuria Casado-Coy ◽  
Pablo Sánchez-Jerez ◽  
Jesus S. Troncoso ◽  
Carlos Sanz-Lazaro
Keyword(s):  
Mollusc Shell ◽  
Shell Debris

scholarly journals Mollusc-shell debris can mitigate the deleterious effects of organic pollution on marine sediments

2016 ◽  
Vol 54 (2) ◽  
pp. 547-556 ◽  
Author(s):  
Nuria Casado-Coy ◽  
Elena Martínez-García ◽  
Pablo Sánchez-Jerez ◽  
Carlos Sanz-Lázaro
Keyword(s):  
Marine Sediments ◽  
Organic Pollution ◽  
Mollusc Shell ◽  
Shell Debris

The Effect of Invertebrate Infestation on Green Turtle (Chelonia mydas) Nests on Kazanlı Beach, Mersın, Turkey

2020 ◽  
Vol 27 (5) ◽  
pp. 245-256
Author(s):  
Cemil Aymak ◽  
Aşkın Hasan Uçar ◽  
Yusuf Katılmış ◽  
Eyup Başkale ◽  
Serap Ergene
Keyword(s):  
Green Turtle ◽  
Hatching Success ◽  
Negative Relationship ◽  
Chelonia Mydas ◽  
Sea Turtle ◽  
Faunal Composition ◽  
Independent Variables ◽  
Invertebrate Species ◽  
First Time ◽  
Nesting Season

In this study invertebrate infestation in green turtle (Chelonia mydas) nests were recorded for the first time for Kazanlı beach, Mersin, Turkey. For this aim, in 2006 nesting season, 294 natural intact green turtle nests were sampled to examine their contents and invertebrate infestation was found in 76 (25.85% of the total sampling green turtle nests). These infested nests were examined in terms of the invertebrate faunal composition. The specimens found in the green sea turtle nests were identified to order, family or genus levels and they were represented in 5 orders. These invertebrate groups are Elater sp. larvae (Elateridae; Coleoptera), Pimelia sp. larvae (Tenebrionidae; Coleoptera), Enchytraeidae (Oligochaeta), Cyrptostigmata (Acari), Oniscidae (Isopoda), Formicidae (Hymenoptera). Elater sp. was the most common invertebrate group in the green turtle nests. According to student t test, we found statistically significant differences between 7 independent variables and invertebrate species presence. Furthermore, logistic regression analysis explained that there is a negative relationship between hatching success rate and invertebrate species presence.

DIFFERENCE IN MOVEMENT OF NATURAL GRAVEL, ARTIFICIAL GRAVEL AND SHELL DEBRIS WITH SAME GRAIN SIZE UNDER WAVES

2018 ◽  
Vol 74 (2) ◽  
pp. I_703-I_708
Author(s):  
Yoshiki HASHIMOTO ◽  
Akio KOBAYASHI ◽  
Takaaki UDA ◽  
Yasuhito NOSHI
Keyword(s):  
Grain Size ◽  
Shell Debris

scholarly journals Taphonomy of mass mollusc shell accumulation at Amvrakikos Gulf lagoon complex sandy barriers (NW Greece)

Oceanologia ◽  
2020 ◽  
Author(s):  
Konstantinos Tsolakos ◽  
George Katselis ◽  
John A. Theodorou
Keyword(s):  
Mollusc Shell

scholarly journals Neogene marine ostracod diversity and faunal composition in Java, Indonesia: Indo-Australian Archipelago biodiversity hotspot and the Pliocene diversity jump

2019 ◽  
Vol 39 (3) ◽  
pp. 244-252 ◽  
Author(s):  
Caren P Shin ◽  
Moriaki Yasuhara ◽  
Hokuto Iwatani ◽  
Tomoki Kase ◽  
Allan Gil S Fernando ◽  
...  
Keyword(s):  
Biodiversity Hotspot ◽  
Faunal Composition

Temporal and spatial variability in the community structure of the fauna of four sandy beaches in south-eastern New South Wales.

1984 ◽  
Vol 35 (6) ◽  
pp. 663 ◽  
Author(s):  
DM Dexter
Keyword(s):  
Community Structure ◽  
Diversity Index ◽  
Abundant Species ◽  
Sandy Beaches ◽  
Sampling Procedure ◽  
Wave Action ◽  
Physical Factors ◽  
Faunal Composition ◽  
South Wales ◽  
Temporal And Spatial

Four intertidal sandy beaches with different exposures, La Perouse, Ocean Beach, Dolls Point, and Towra Point, were studied for temporal and spatial changes in faunal composition and community structure. Each of these beaches was sampled from 6 to 12 times between July 1980 and July 1981 using a 500 �m sieve. A stratified random sampling procedure across the intertidal zone isolated 40 660 individuals representing 85 species. Distribution and abundance of species were strongly influenced by tidal level. Densities changed during the year but no seasonal changes in intertidal zonation patterns were found. Changes in density were correlated with the reproductive activities of the abundant species, especially Pseudolana concinna and Exoediceros maculosus at La Perouse, and Spio pacifica at Dolls Point and Towra Point. The number of species increased from high to low tide, and also increased with decreasing exposure to wave action. Crustaceans dominated the fauna in the most exposed site and decreased in abundance with increasing protection. Ocean Beach experienced the least fluctuation in physical factors such as wave action, salinity, and temperature, and its fauna exhibited the highest diversity index (H') and evenness (J'), the most stable density, and the greatest stability in faunal composition through time. The highest densities and the most species were found at Towra Point, which also was the most protected site.

scholarly journals Herpetofauna from an urban Pampa fragment in southern Brazil: composition, structure and conservation

Check List ◽  
2016 ◽  
Vol 12 (5) ◽  
pp. 1964
Author(s):  
Omar Machado Entiauspe-Neto ◽  
Tângela Denise Perleberg ◽  
Marco Antonio de Freitas
Keyword(s):  
Natural History ◽  
Urban Areas ◽  
Rio Grande ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Faunal Composition ◽  
Diversity Patterns ◽  
Reptile Species ◽  
History Of ◽  
Composition Structure

Faunistic inventories regarding natural history of amphibians and reptiles are considered scarce and very little is known about their assemblages in urban areas; the Pampas morphoclimatic domain, also known as Uruguayan Savannah or Southern Grasslands, is also poorly known regarding their faunal composition.  Herein, we present a checklist of 16 amphibian and 20 reptile species recorded over a course of four years in the Instituto Federal de Educação, Ciências e Tecnologia, Câmpus Pelotas-Visconde da Graça, in Pelotas, Rio Grande do Sul, Brazil. We also present data on natural history and discuss conservation efforts to be undertaken in the area, in one of the least preserved and known Brazilian morphoclimatic domains, providing insights into urban herpetofaunal diversity patterns and showing the importance of modified areas in its conservation.

Aminostratigraphic Correlation and Geochronology of Two Quaternary Loess Localities, Central Mississippi Valley

1994 ◽  
Vol 41 (3) ◽  
pp. 289-297 ◽  
Author(s):  
June E. Mirecki ◽  
Barry B. Miller
Keyword(s):  
Amino Acid ◽  
Kinetic Model ◽  
Mississippi Valley ◽  
River Section ◽  
Mollusc Shell ◽  
The Third ◽  
Shell Carbonate ◽  
Parabolic Kinetic

AbstractAmino acid epimeric (aIle/Ile) values from terrestrial molluscs are used to define and correlate three aminozones in loess sequences exposed across the central Mississippi Valley, in Arkansas and Tennessee. Three superposed aminozones are defined at Wittsburg quarry, Arkansas, primarily using aIle/Ile values from total hydrolysates of the gastropod genus Hendersonia: Peoria Loess (aIle/Ile = 0.07 ± 0.01), Roxana Silt (0.14 ± 0.02), and a third loess (0.28 ± 0.06). Loess units at Wittsburg quarry can be correlated on lithologic characteristics eastward across the Mississippi Valley to the Old River section, near Memphis, Tennessee; however, only one loess unit is fossil-bearing (Peoria Loess, aIle/Ile = 0.05) at that section. Radiocarbon analyses of charcoal from the upper Roxana Silt (ca. 26,000 to 29,000 yr old) and mollusc shell carbonate from the basal Roxana Silt (ca. 39,000 yr old) are used to calibrate amino acid epimeric data for the central Mississippi Valley. These data, applied to the apparent parabolic kinetic model of R. M. Mitterer and N. Kriausakul (1989, Quaternary Science Reviews 8, 353-357), suggest an Illinoian (>120,000 yr) age for the third loess in the central Mississippi Valley that is correlative with part of the Loveland Loess in Illinois and Iowa.

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