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Taxonomy-based differences in feeding guilds of fish

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Current Zoology 2020年第1期66卷 51-56页

作者： Javier SANCHEZ-HERNANDEZ Departamento de Zooloxla Xenetica e Antropoloxfa FlsicaFacultade de BioloxfaUniversidade de Santiago de CompostelaCampus Vida s/nSantiago de CompostelaEspana

It has been taken for granted that feeding guilds and behavior in animals are linked to the taxonomic relatedness of species,but empirical evidence supporting such relationship is virtually missing.To examine the importance of taxonomy on trophic ecology,I here present the first well-resolved dietary taxonomy analysis based on feeding guilds(predation,herbivory,and filtering)among families and genera within the fish order Perciformes.Taxonomic relatedness in feeding did not vary with ecosystem dimension(marine vs.freshwater).Although predation dominates among Perciformes fishes,this study shows that in most cases taxonomic units(family or genus)are composed by species with several feeding guilds.Related species are more similar in feeding compared with species that are taxonomically more distant demonstrating that there is a greater variation of feeding guilds within families than genera.Thus,there is no consistency in feeding guilds between family-and genus-level taxonomy.This study provides empirical support for the notion that genera are more informative than families,underlining that family-level taxonomy should be avoided to infer feeding habits of fish species at finer taxonomic resolution.Thus,the choice of taxonomic resolution(family or genus level)in ecological studies is key to avoid information loss and misleading results.I conclude that high-rank taxonomic units(i.e.,above the generic level)are not appropriate to test research hypotheses about the feeding of fish.

关键词： aquatic systems clades FishBase global datasets taxonomic sufficiency trophic ecology

STUDY OF THE ECOLOGICAL RESTORATION OF aquatic MACROPHYTES IN A EUTROPHIC SHALLOW LAKE

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Chinese Journal of Oceanology and Limnology 1997年第1期15卷 52-60页

作者：邱东茹吴振斌严国安李益健周远捷

Investigations in 1991 to 1993 showed that a perennial submerged plant, Potamogeton maackianus A.Benn., which always dominates the submerged vegetation in the shallow lakes in the middle and lower basins of the Changjiang River, had been extinct from Donghu Lake of Wuhan, and that some other submerged plants sensitive to water contamination had also dissappeared or declined in the lake. The r-selected species, Najas marina L., Myriophyllum spicatum L. and Vallisneria sp. had superseded the K-selected one, P. maackianus, to co-dominate the submerged vegetation. Several hypereutrophic or eutrophic subregions had switched from macrophyte dominance to phytoplankton dominance, while the shrinkage of macrophytes and the deterioration of water quality had also become more and more severe in the other subregions. The emergent macrophytes were poorly developed and the share of leaf-floating plants hed increased in the lake. It was found that the existing vegetation fluctuated drastically from year to year. Macrophyte restoration experiments carried out in large enclosures at 3 subregions of different trophic state, suggested that the aquatic vegetation of less polluted sublakes,such as Niuchao, Tanglin and Houhu Lakes, could recover spontaneously after stocking of herbivorous fish stopped, that K-selected plants should be introduced into these sublakes to enhance the stability of aquatic vegetation,that a prerequisite for the recovery of macrophytes in the severely polluted basins is the reduction of external and internal nutrient loadingr coupled with feasible management measures; and that r-selected submerged species should be used as pioneer plants for the macrophyte recovery.The recently introduced exotic submerged plant, Elodea canadensis,transplanted into the Houhu Enclosure could survive but failed to surive summer in the enclosures located in the hypereutrophic Shuiguohu Bay.

关键词： aquatic macrophytes restoration

Microplastics removal strategies:A step toward finding the solution

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Frontiers of Environmental Science & Engineering 2022年第1期16卷 19-36页

作者： Neha Badola Ashish Bahuguna Yoel Sasson Jaspal Singh Chauhan aquatic Biodiversity Lab Department of Himalayan Aquatic BiodiversityHemvati Nandan Bahuguna Garhwal University(A Central University)Srinagar-GarhwalUttarakhand 246174India Casali Center for Applied Chemistry Institute of ChemistryThe Hebrew University of Jerusalem9190401Israel Department of Chemistry Uttaranchal UniversityDehradunUttarakhand 248007India

Microplastics are an emerging threat and a big challenge for the environment.The presence of microplastics(MPs)in water is life-threatening to diverse organisms of aquatic ecosystems.Hence,the scientific community is exploring deeper to find treatment and removal options of MPs.Various physical,chemical and biological methods are researched for MPs removal,among which few have shown good efficiency in the laboratory.These methods also have a few limitations in environmental conditions.Other than finding a suitable method,the creation of legal restrictions at a governmental level by imposing policies against MPs is still a daunting task in many countries.This review is an effort to place all effectual MP removal methods in one document to compare the mechanisms,efficiency,advantages,and disadvantages and find the best solution.Further,it also discusses the policies and regulations available in different countries to design an effective global policy.Efforts are also made to discuss the research gaps,recent advancements,and insights in the field.

关键词： aquatic Coagulation Microplastics Plastic Water Treatment Plant Wastewater

A STUDY ON QUALITY OF aquatic ENVIRONMENT IN TUMEN RIVER AREA

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Chinese Geographical Science 1998年第2期8卷 31-40页

作者：朱颜明黎劲松卢学强

ＡＳＴＵＤＹＯＮＱＵＡＬＩＴＹＯＦＡＱＵＡＴＩＣＥＮＶＩＲＯＮＭＥＮＴＩＮＴＵＭＥＮＲＩＶＥＲＡＲＥＡ①ＺｈｕＹａｎｍｉｎｇ（朱颜明）ＣｈａｎｇｃｈｕｎＩｎｓｔｉｔｕｔｅｏｆＧｅｏｇｒａｐｈｙ，ｔｈｅＣｈｉｎｅｓｅＡ... 详细信息

ＡＳＴＵＤＹＯＮＱＵＡＬＩＴＹＯＦＡＱＵＡＴＩＣＥＮＶＩＲＯＮＭＥＮＴＩＮＴＵＭＥＮＲＩＶＥＲＡＲＥＡ①ＺｈｕＹａｎｍｉｎｇ（朱颜明）ＣｈａｎｇｃｈｕｎＩｎｓｔｉｔｕｔｅｏｆＧｅｏｇｒａｐｈｙ，ｔｈｅＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ，...

关键词： pollution sources aquatic environment quality environmental forecast Tumen River

MEMBRANE POTENTIAL——A KEY PARAMETER OF aquatic MICROPLANKTON

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Chinese Journal of Oceanology and Limnology 2002年第S1期20卷 74-80页

作者：杨印杰焦念志 Ministry of Education Key Laboratory for Marine Environmental Sciences Center of Marine Environmental Science Xiamen University Xiamen 361005 China

Membrane potential is essential for the uptake of substance and physiological activityin cells; and is an indicator of cell viability and a criterion of aquatic environment. It is also applied toclassification of ecological populations. So membrane potential is a key parameter in studies on aquaticmicroplankton. It can be estimated by microelectrode, radioisotope method, spectro photomeny, flow cy-

关键词： membrane potential aquatic microplankton flow cytometry

Dissolved organic carbon in permafrost regions: A review

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Science China Earth Sciences 2019年第2期62卷 349-364页

作者： Qiang MA Huijun JIN Congrong YU Victor F.BENSE State Key Laboratory of Frozen Soils Engineering Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences College of Resources and Environment University of Chinese Academy of Sciences School of Civil Engineering Harbin Institute of Technology State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University Hydrology and Quantitative Water Management Group Department of Environmental Sciences Wageningen University

A large quantity of organic carbon(C) is stored in northern and elevational permafrost regions. A portion of this large terrestrial organic C pool will be transferred by water into soil solution(～0.4 Pg C yr^(-1))(1 Pg=10^(15) g), rivers (～0.06 Pg C yr^(-1)),wetlands, lakes, and oceans. The lateral transport of dissolved organic carbon(DOC) is the primary pathway, impacting river biogeochemistry and ecosystems. However, climate warming will substantially alter the lateral C shifts in permafrost regions.Vegetation, permafrost, precipitation, soil humidity and temperature, and microbial activities, among many other environmental factors, will shift substantially under a warming climate. It remains uncertain as to what extent the lateral C cycle is responding,and will respond, to climate change. This paper reviews recent studies on terrestrial origins of DOC, biodegradability, transfer pathways, and modelling, and on how to forecast of DOC fluxes in permafrost regions under a warming climate, as well as the potential anthropogenic impacts on DOC in permafrost regions. It is concluded that:(1) surface organic layer, permafrost soils,and vegetation leachates are the main DOC sources, with about 4.72 Pg C DOC stored in the topsoil at depths of 0–1 m in permafrost regions;(2) in-stream DOC concentrations vary spatially and temporally to a relatively small extent (1–60 mg C L^(-1)) and annual export varies from 0.1–10 g C m^(-2) yr^(-1);(3) biodegradability of DOC from the thawing permafrost can be as high as 71%, with a median at 52%;(4) DOC flux is controlled by multiple factors, mainly including vegetation, soil properties,permafrost occurrence, river discharge and other related environmental factors, and(5) many statistical and process-based models have been developed, but model predictions are inconsistent with observational results largely dependent on the individual watershed characteristics and future discharge trends. Thus, it is still difficult to predict how future lateral C flux will respond to climate change

关键词： Dissolved organic carbon (DOC) aquatic ecosystem Carbon biodegradability DOC export Permafrost degradation

Characterization of an infectious pancreatic necrosis virus from rainbow trout fry(Onhorhynchus mykiss) in West Ukraine

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Virologica Sinica 2015年第3期30卷 231-233页

作者： Yuriy P Rud Maria I Maistrenko Leonid P Buchatskiy Laboratory of Biotechnology in Aquaculture Institute of Fisheries of the National Academy of Agrarian Sciences of Ukraine Department of Molecular Biology Biotechnology and Biophysics Institute of High Technologies Taras Shevchenko National University of Kyiv Laboratory of Physico-Chemical Biology ESC Institute of BiologyTaras Shevchenko National University of Kyiv

Dear Editor,aquatic birnaviruses are a group within the family Birnaviridae that comprise isolates from fish and shellfish from both fresh-and seawater(Woo and Bruno,1999).Members of the family Birnaviridae are icosahedral viruses approximately 60 nm in diameter composed of five polypeptides and two segments of double-stranded RNA(Dixon et al.,2008).In this report,an aquatic birnavirus was isolated from rainbow trout fry,Onhorhynchus myki-

关键词： trout shellfish infectious Dixon isolates Bruno aquatic stranded fresh comprise

Response of benthic algae to environmental conditions in an urban lake recovered from eutrophication, China

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Journal of Oceanology and Limnology 2020年第1期38卷 93-101页

作者： WANG Tao WANG Qing XIA Shuang YAN Chunlan PEI Guofeng Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China SouthCentral University for Nationalities

Benthic algae communities dominate the primary production in littoral zone of shallow lake.To tmderstand the long-term effect of alteration in the composition of benthic algae community assemblage in such as a lake in China,we analyzed the benthic algae developments and indicators in the Donghu Lake in Wuhan,central China in 2004 and 2014.We compared the benthic algae biomass,compositions,and species richness of aquatic macrophytes and the changes of primary physicochemical parameters.The results show that in the 10-year period,chl a and conductivity declined significantly but nutrient level of the whole lake remained largely stable.The benthic algae biomass doubled and the relative proportion of green algae increased,whereas the benthic diatom ratio decreased.The benthic diatom assemblages and taxa differed in a number of ways,showing more epiphytic diatom species,and the relative abundance and species richness changed markedly.The number of aquatic macrophyte species increased from 3 in 2004 to 15 in 2014,presenting a remarkable recovery from previous eutrophication conditions.The changes of water level,chl a,and conductivity played a crucial role in governing aquatic macrophytes re-colonization in the littoral zones in the period.The ecological characteristics of littoral benthic diatoms reflect habitat coupling as indicated by redundancy analysis.Therefore,the close link between benthic algae and macrophyte recovery demonstrates that the benthic algae metrics are much more useful than nutrient levels to quantify the process of restoration in the lake.

关键词： benthic algae benthic diatom lake restoration aquatic macrophyte water level

The alternative saline lake ecosystem states and adaptive environmental management

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Journal of Oceanology and Limnology 2018年第6期36卷 2010-2017页

作者： Nickolai V.SHADRIN Kovalevsky Institute of Marine Biological Research Russian Academy of Sciences

Our sustainable environmental management must be based on adequate ecological concepts. The question arises: what concept is better to use for understanding and management of ecosystems? To look for an answer, we concentrate our attention on saline lakes. Every ecosystem has several alternative stable states and may demonstrate regime shifts, which are large, abrupt, persistent changes in the structure and function of a system. To understand the dynamics of ecosystems the Concept of Multiplicity of Ecosystem Alternative Stable States as a new ecological paradigm has been developed recently. The author analyzes the emerging paradigm using the case of saline lakes, and discusses how to base our adaptive environmental management on the developing paradigm. Different issues of development of the concept and its application to salinology as a scientific basis of an integrated management of a saline lake and its watershed are discussed. The concept may serve as one of the key theoretical elements of the scientific basis in sustainable environmental management.

关键词： adaptive management aquatic ecology environmental management saline lakes salinology