Influence of Sieve Mesh Size on Relationships between Macroinvertebrate Assemblage and Environmental Variables in Wetlands

Wetlands ◽  
2018 ◽  
Vol 38 (4) ◽  
pp. 677-687
Author(s):  
Ryan C. Baldwin ◽  
Michael D. Sundberg ◽  
Timothy W. Stewart ◽  
Michael J. Weber
Keyword(s):  
Environmental Variables ◽  
Mesh Size ◽  
Macroinvertebrate Assemblage ◽  
Sieve Mesh Size

Macrobenthic community structure in tropical estuaries: the effect of sieve mesh-size and sampling depth on estimated abundance, biomass and composition

2013 ◽  
Vol 93 (6) ◽  
pp. 1441-1456 ◽  
Author(s):  
Ana Paula Maria Cavalcanti Valença ◽  
Paulo Jorge Parreira dos Santos
Keyword(s):  
Community Structure ◽  
Mesh Size ◽  
Environmental Parameters ◽  
Total Biomass ◽  
Sampling Depth ◽  
Total N ◽  
The Status ◽  
Sieve Mesh Size ◽  
The Difference ◽  
Sampling Procedures

Macrobenthic data from estuaries along the Pernambuco coast in north-eastern Brazil were analysed to evaluate the effect of sieve mesh size (1.0 mm × 0.5 mm) and sampling depth (0–10 cm × 0–20 cm) on the description of infaunal communities, in an attempt to discuss standardized sampling procedures for different ecological studies objectives in these ecosystems. In general, the difference in sieve retention was less evident for biomass but was important for abundance: the 1.0 mm sieve retained only 27% of total individuals but 77% of total biomass. Regarding sampling depth, the 0–10 cm layer contained most individuals (94%) but contributed just 64% of the overall biomass. Although no strong differences in community structure were observed at most sites with the use of different sieves, the correlations among community dissimilarity using different meshes with environmental parameters (organic matter, total-N and microphytobenthos) indicated that the use of the 0.5 mm sieve will allow a better evaluation of the status of these estuaries. The results also highlight the importance of taking the vertical distribution of tropical macrofauna into account for quantitative estimates: for taxa composition and abundance the top layer is clearly essential, whereas for biomass the deeper layers should also be considered.

Sieve mesh size and quantitative chironomid paleoclimatology

2007 ◽  
Vol 38 (3) ◽  
pp. 329-345 ◽  
Author(s):  
Dirk Verschuren ◽  
Hilde Eggermont
Keyword(s):  
Mesh Size ◽  
Sieve Mesh Size

Fish composition in a south-western Atlantic temperate coastal lagoon: spatial–temporal variation and relationships with environmental variables

2009 ◽  
Vol 89 (3) ◽  
pp. 593-604 ◽  
Author(s):  
M. González Castro ◽  
J.M. Díaz de Astarloa ◽  
M.B. Cousseau ◽  
D.E. Figueroa ◽  
S.M. Delpiani ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Coastal Lagoon ◽  
Environmental Variables ◽  
Mesh Size ◽  
High Abundance ◽  
Spatial And Temporal Variation ◽  
Salinity Range ◽  
Buenos Aires Province ◽  
Western Atlantic ◽  
Odontesthes Argentinensis

Mar Chiquita, an irregularly shaped brackish-water coastal lagoon, is located in the Buenos Aires province of Argentina and considered since 1996 by the Coordination Council of the Man and Biosphere Program of UNESCO as a World Reserve of Biosphere. The present paper aims to study both the spatial and temporal variation of fish composition in this coastal lagoon and the influence of some environmental variables on the relative abundance of the main fish species. Monthly sampling surveys over a two-year period in three different areas were conducted, using a beach-seine net and three monofilament-gill nets with different mesh size. Twenty-eight species belonging to four bio-ecological categories were identified, five of them are new records for Mar Chiquita fish community. The correspondence analysis showed strong relationships between high salinity range and the abundance of Brevoortia aurea, Cynoscion guatucupa and Pomatomus saltatrix. Conversely, low salinity range corresponded to high abundance of Mugil platanus and Odontesthes argentinensis. High temperatures were corresponded with abundance of Micropogonias furnieri and Brevoortia aurea. In contrast, high abundance of both Odontesthes argentinensis and Oligosarcus jenynsii were corresponded to low temperatures. Brevoortia aurea, Mugil platanus and Odontesthes argentinensis were the most abundant species, representing more than 80% of the total capture. The group of estuarine-nondependent-marine fish presented the highest species richness. Estuarine-dependent-marine species presented for both juveniles and adults specimens the highest abundance values.

scholarly journals Ichthyofaunal diversity with relation to environmental variables in the snow-fed Tamor River of eastern Nepal

2021 ◽  
Vol 13 (14) ◽  
pp. 20190-20200
Author(s):  
Jawan Tumbahangfe ◽  
Jash Hang Limbu ◽  
Archana Prasad ◽  
Bharat Raj Subba ◽  
Dil Kumar Limbu
Keyword(s):  
Analysis Of Variance ◽  
Environmental Variables ◽  
Redundancy Analysis ◽  
Fish Community ◽  
Mesh Size ◽  
Summer Season ◽  
Total Hardness ◽  
Fish Community Structure ◽  
Field Surveys ◽  
Four Seasons

Tamor River in eastern Nepal supports diverse hill stream fishes. From winter, spring, summer, and autumn of 2020, we investigated the ichthyofaunal diversity with environmental variables in the snow-fed Tamor River covering four seasons (winter, spring, summer, and autumn) and field surveys were carried out in January, April, July, and October 2020. We used two cast nets of different sizes, one with a mesh size of 2 cm, 6 m diameter and 6 kg weight and another having 0.5 cm, 3 m diameter and 2 kg weight. In addition, monofilament gill nets with mesh sizes of 6, 8, and 10 were used for fish sampling. A total of 6,373 fish individuals representing 28 species belonging to three orders, seven families, and 16 genera were recorded. One-way permutational multivariate analysis of variance (perMANOVA) on the Non-metric Multidimensional Scaling (NMDS) showed no significant (P >0.05) difference between winter, spring, and autumn season but summer season showed significant (P <0.05) difference from winter, spring, and autumn seasons. Furthermore, one-way analysis of variance on redundancy analysis (RDA) vindicated that among the selected parameters, pH, air temperature and total hardness were the influencing factors (P <0.05) to determine the fish community structure in Tamor River.

Effect of Sieve Mesh Size on the Estimation of Benthic Invertebrate Abundance and Composition in the Honi River, Kenya

2015 ◽  
Vol 103 (1) ◽  
pp. 59-68 ◽  
Author(s):  
John Gichimu Mbaka ◽  
Charles Mwithali M'Erimba ◽  
Henry Karanja Thiongo ◽  
Jude Mutuku Mathooko
Keyword(s):  
Mesh Size ◽  
Benthic Invertebrate ◽  
Invertebrate Abundance ◽  
Sieve Mesh Size
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