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Academic literature on the topic 'Macrobentho'
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Journal articles on the topic "Macrobentho"
1
Zhang, Zhongfang, Shanshan Xia, Xuetao Sun, and Lizhi Zhou. "Effects of Macrobenthos Relative to Floating-Leaved Plants on the Wintering Shorebird Assemblages at Shengjin Lake, China." Diversity 14, no. 12 (2022): 1072. http://dx.doi.org/10.3390/d14121072.
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In shallow lakes, floating-leaved plants can produce dense lakebeds that dramatically alter freshwater ecosystems and impact macrobenthic communities. Shorebirds are morphologically diverse and utilize different foraging strategies; they can partition food resources to achieve coexistence due to differences in food availability. In this study, we defined shorebird foraging guilds using a principal component analysis and explained differences in shorebird composition in terms of food availability by comparing macrobenthic and shorebird communities in Euryale ferox artificial planting areas, Trapa spp. natural growth areas, and control areas. The Mantel test and a Spearman analysis were used to correlate macrobenthic taxa with shorebird foraging guilds. We recorded four different macrobenthic taxa in the three study areas, including insects, gastropods, oligochaetes, and bivalves. Fifteen species belonging to three shorebird families were recorded across the three study areas. Our results suggest that floating-leaved plants are an important cause of differences in macrobenthic communities, and epifaunal macrobenthos (insects and gastropods) and infaunal macrobenthos (oligochaetes and bivalves) take on different patterns of diversity composition in different habitats. The macrobenthic and shorebird communities were potentially coherent. Different shorebird foraging guilds were limited by food availability and thus correlated differently with different macrobenthos. Therefore, differences in macrobenthic communities relative to floating-leaved plants can affect shorebird assemblages by affecting the availability of food resources.
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Selleslagh, Jonathan, Sandric Lesourd, and Rachid Amara. "Comparison of macrobenthic assemblages of three fish estuarine nurseries and their importance as foraging grounds." Journal of the Marine Biological Association of the United Kingdom 92, no. 1 (2011): 85–97. http://dx.doi.org/10.1017/s0025315411000336.
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Macrobenthic assemblages were examined in three fish estuarine nurseries and related to environmental variables, as well as fish and macrocrustaceans, in order to assess and compare the potential foraging ground value of these systems. Macrobenthos was sampled in spring 2007 in the Canche, Authie and Somme estuaries (eastern English Channel, France). A total of 17, 28 and 23 macrobenthic taxa, with a clear dominance of amphipods (mainly Bathyporeia sarsi), polychaetes and bivalves, were recorded in the three estuaries respectively. Although predators (fish and macrocrustaceans) were abundant, relatively high densities of macrobenthos were observed: 876.2 ± 389.1, 595.4 ± 197.2 and 854.3 ± 281.2 ind. m-2 in the Canche, Authie and Somme, respectively. No significant difference in species richness, Shannon–Wiener diversity and density (total and dominant groups) of macrobenthos was observed between the three estuaries. Although the analysis of similarity and similarity percentages analyses indicated that macrobenthic assemblage was variable between Authie and Somme, results showed that macrobenthos resource was relatively high and similar in the three estuaries. Taking into account these considerations, the present study indicated a similar relative importance of the Canche, Authie and Somme estuaries as foraging grounds for fish and macrocrustaceans during spring. Multivariate analysis showed that macrobenthic assemblages were mainly driven by salinity and sediment characteristics in the Canche and Authie estuaries while in the Somme estuary sediment characteristics were the most influencing parameters.
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Haque, Md Mozammal, Abu Sayed Muhammad Sharif, Md Kawser Ahmed, et al. "Distribution and Diversity of Macrobenthos in Sangu River, Bangladesh." Dhaka University Journal of Earth and Environmental Sciences 9, no. 2 (2021): 27–34. http://dx.doi.org/10.3329/dujees.v9i2.55087.
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This study was conducted to understand the macrobenthos distribution and abundance in Sangu River to monitor the aquatic pollution level. Both surface and sub-surface water and benthic sediments were collected from three stations of the Sangu River. A few indices viz. Shannon-wiener, Simpson, Margalef’s and Evenness were used to estimate the macrobenthic assemblages. In this study, a total of 11 major taxa comprising total 870 macobenthic species were identified. Shannon-wiener index was maximum (1.58) at lower part (LP) which indicated moderate to heavily pollute aquatic environment of the Sangu River. The average diversity values of Shannon, Evenness, Simpson and Margalef’s indices were 0.97, 0.43, 0.39 and 1.54 respectively. The concentration of dissolved oxygen was the lowest (4.90 mg/L) at LP and the highest (5.08 mg/L) at upper part (UP). This study showed that macrobenthos abundances was influenced by higher temperature, salinity, and pH. The percentage of organic carbon content was maximum (98.18%) at LP where the macrobenthic abundance was 330 individuals/m2, whereas it was minimum (80.77%) at UP where macrobenthic abundance was 248 individuals/m2 that indicated carbon content also influence the assemblages of the macrobenthos in the Sangu River. A clear gradient of physico-chemical and benthic soil parameters fluctuation was also found to be responsible for the variations of macrobenthos assemblage in the Sangu River. The Dhaka University Journal of Earth and Environmental Sciences, Vol. 9(2), 2020, P 27-34
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Pan, Sin-He, Chuan-Wen Ho, Chiao-Wen Lin, Shou-Chung Huang, and Hsing-Juh Lin. "Differential Response of Macrobenthic Abundance and Community Composition to Mangrove Vegetation." Forests 12, no. 10 (2021): 1403. http://dx.doi.org/10.3390/f12101403.
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The mass planting of mangroves has been proposed as a mitigation strategy to compensate for mangrove loss. However, the effects of mangrove vegetation on the abundance and community composition of macrobenthos remain controversial. The macrobenthic communities in four intact mangrove forests with different conditions and the adjacent nonvegetated mudflats of two mangrove species with distinct stand structures on the western coast of Taiwan were examined. Some macrobenthic taxa occurred only in the mangroves, suggesting macrobenthic critical habitats. Seasonal shift in community composition was more pronounced in the mudflats than in the mangroves, possibly due to the rich food supply, low temperature, and shelter function provided by mangrove forests. However, crab density was always lower in the mangroves than in the mudflats. There was a negative relationship between the stem density of Kandelia obovata (S., L.) and infaunal density. The pneumatophore density of Avicennia marina (Forsk.) correlated negatively with epifaunal density. Our results show that the response of macrobenthic abundance and community composition to mangrove vegetation was inconsistent. We reason that mangroves are critical habitats for the macrobenthos in the mudflats. However, if mangrove tree density is high, we predict that the macrobenthic density will decrease. This suggests that at some intermediate level of mangrove tree density, where there are enough mangrove trees to harbor a macrobenthic community but not enough trees to significantly reduce this density, mangroves management can be optimally achieved to promote the presence of a diverse and dense macrobenthic community.
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Shafie, B. B., A. Man, N. F. Ali, and A. A. Rahim. "Macrobenthos diversity along the Exclusive Economic Zone of East Coast Peninsular Malaysia." Journal of Environmental Biology 42, no. 3(SI) (2021): 817–23. http://dx.doi.org/10.22438/jeb/42/3(si)/jeb-13.
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Aim: To examine the standing stock of macrobenthos along a depth gradient at regional scales in the Sunda Shelf of Malaysian Economic Exclusive Zone (EEZ). Methodology: Macrobenthos was sampled with a Smith–McIntyre grab at 19 stations on the continental shelf of the South-western South China Sea (east coast of Peninsular Malaysia) within the EEZ and was carried out onboard MV SEAFDEC II in May/June 2016. Results: The faunal composition, abundance, and diversity of species, together with environmental parameters were studied. A total of 10,232 individuals comprising 105 families were identified. The dominant macrobenthic group was Mollusca (55.25%), followed by Annelida (26.80%) and Arthropoda (15.36%), while the Echinodermata and Miscellaneous group recorded 1.13% and 1.43% respectively. Based on Bray-Curtis species similarities, five different sample groups (SGs) were distinguished, which were located in different zones and gradients of EEZ. Interpretation: Variations in the macrobenthic community is significantly associated with depth, temperature, and salinity. Further research should be conducted on other factors that contribute to the diversity of macrobenthos along the east coast of Peninsular Malaysia’s EEZ.
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Farabi, Seyyed Mohammad Vahid, Abolghasem Roohi, and Abdolhamid Azari. "Comparative study of the impacts of fish cage culture on some environmental factors and Macrobenthic communities in offshore farms in the southern Caspian Sea." Journal of Aquaculture & Marine Biology 12, no. 1 (2023): 1–6. http://dx.doi.org/10.15406/jamb.2023.12.00350.
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The aim of this study was to investigate the effects of fish cage culture on Macrobenthic in the southern Caspian Sea. Samples were collected in two offshore farms with four floating polyethylene cages with a production of 60 tons for 5 months in 2015. Sampling was performed of macrobenthos, physicochemical, and sediment in January, March, May, and August at the depths of shade, 50, 100, and 1000 m in three geographical directions (east, west, and south) of the farm. Macrobenthic analysis showed Hypaniola kowalewskii and Streblospio gynobranchiata were predominant, which resulted in an unusual condition due to the effectiveness of the marine farm. There was a linear relationship between environmental factors and macrobenthos communities under the RDA analysis test and the water temperature was the most crucial factor in the density of the dominant species in both fish farm sites. The dominant Macrobenthic species were subjected to environmental conditions in addition to the influence of temperature, salinity, pH, dissolved oxygen, nitrogen, and phosphorus compounds. This situation can be attributed to the hydrological conditions of the studied area; low production of fish, a short period of fish farming, suitable depth of cages established and different water flow directions.
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Xiong, Shao Gao, Hong Yuan Li, and Xiu Ming Wang. "Relationships between Macrobenthos and Environmental Variables in Tianjin Offshore Water." Advanced Materials Research 838-841 (November 2013): 2556–60. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.2556.
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With rapid economic and social development in Tianjin coastal area, environmental impact factors are increasingly complex. In order to study the relationships between macrobenthos and environmental variables, macrobenthos and seven environmental variables (including dissolved oxygen, active phosphate, inorganic nitrogen, ammonia, nitrate, nitrite, and oil) are investigated in the summer of 2004 and 2007. Canonical Correspondence Analysis (CCA) and Redundancy Analysis (RDA) in CANOCO software are all employed in the analysis for mutual authentication of the result. The results indicate that: (1) reactive phosphate and nitrite are the most important impact factor for the macrobenthic community; (2) nitrate is the supplementary factor that explains the macrobenthos data; (3) whether inorganic nitrogen is a key impact factor, it needs further research.
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Kim, Sang Lyeol, Su Min Kang, Hyung-Gon Lee, Gwan Hee Han, and Ok Hwan Yu. "Species Diversity and Community Structure of Macrobenthos in the Ulleung Basin, East Sea, Republic of Korea." Journal of Marine Science and Engineering 11, no. 1 (2023): 92. http://dx.doi.org/10.3390/jmse11010092.
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The Ulleung Basin of the East Sea is a biological hotspot, but studies on the macrobenthos therein are lacking. To evaluate the macrobenthos species diversity and community structure in the Ulleung Basin, we conducted a survey from 2017 to 2021. A total of 262 species of macrobenthos was detected by the survey, and the average habitat density was 243 individuals/m2. The average biomass of macrobenthos was 43.7 g/m2, and the average Shannon and Wiener’s diversity index was 2.3 (0.69–3.61). The dominant species were the polychaetes Terebellides horikoshii, Chaetozone setosa, Scalibregma inflatum, and Aglaophamus sp. and the bivalvia Axinopsida subquadrata. The community structure of macrobenthos differed according to water depth, and a correlation analysis using environmental variables showed that the community was affected by water temperature, salinity, and dissolved oxygen. The macrobenthic fauna in the Ulleung Basin was greatly influenced by water depth, the sedimentary environment was different, and the dominant species were also different. In addition, there was little seasonal change compared to the East Sea coast. Our findings will facilitate further investigation of benthic ecosystems throughout the East Sea.
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Vineetha S. "The Benthic Macrofaunal Community in Agricultural Ditches in Kole Paddy Fields, Vembanad Kole Wetlands, India." Journal of Advance Research in Business Management and Accounting (ISSN: 2456-3544) 2, no. 11 (2016): 01–08. http://dx.doi.org/10.53555/nnbma.v2i11.492.
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Paddy fields are connected by drainage ditches (channels),that are considered as drivers of biodiversity inagricultural areas. The macrobenthic community structure in agricultural ditches of Kole paddy fields, a part ofthe Ramsar site Vembanad kole wetlands during a complete crop season was analyzed. The macrobenthicfauna belonged to phyla Annelida, Arthropoda and Mollusca and classes Oligochaeta (60.39%), Insecta(39.31%), Mollusca (0.15%) and Hirudinae (0.15%). The class Oligochaeta was represented by Tubificidae,Naididae, Lumbriculidae; Insecta by Diptera, Coleoptera, Odonata; Mollusca by Bivalvia, Gastropoda.Composition of macrobenthos resembled to that of fresh water wetlands and paddy fields. The average numberof macrobenthos was 1475±2064 ind./m2. There was an unusually high abundance in May (5155 ind./m2); butthe environmental parameters remained usual. The abundance of good quality food or some specific, localizedcondition acting on a microscale which could not be recorded in the environmental analysis would haveresulted in the unusual distribution of the fauna. Highest diversity (3.17) and species richness (1.95) wasobserved during May 2011, during the unusual abundance. Predominant functional feeding group wascollector gatherers indicating the abundance of fine organic particulate matter (FPOM) in the substrate. Nosignificant correlation emerged between macrobenthic abundance and environmental parameters.
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Kim, Sang Lyeol, Hyung Gon Lee, Su Min Kang, and Ok Hwan Yu. "The Influence of Manila Clam (Ruditapes philippinarum) on Macrobenthos Communities in a Korean Tidal Ecosystem." Sustainability 12, no. 10 (2020): 4205. http://dx.doi.org/10.3390/su12104205.
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We investigated the biological impact of extensive Manila clam (Ruditapes philippinarum) aquaculture on macrobenthic communities in a tidal ecosystem in Korea. We collected macrobenthos (>1 mm in length) samples seasonally in the intertidal zone in Geunsoman, Taean, Korea from April 2011 to December 2014. We identified 146 macrobenthos species, including 60 polychaetes, 53 crustaceans, and 16 mollusks. A biota–environment matching (BIO–ENV) analysis indicated that the benthic community was affected by mean sediment grain size (Mz), total organic carbon (TOC), and R. philippinarum biomass. We found no correlation between R. philippinarum and the main dominant species (Heteromastus filiformis, Ceratonereis erythraeensis, and Ampharete arctica), which have a different feeding strategy; thus, this may result in a lack of competition for food resources. In addition, we found that flourishing R. philippinarum positively affects the macrobenthos density but negatively affects the biodiversity index. Moreover, competition between species does not occur clearly, and environmental variables (sediment, organic carbon) are important.