Subjects -> ENVIRONMENTAL STUDIES (Total: 925 journals)
    - ENVIRONMENTAL STUDIES (822 journals)
    - POLLUTION (31 journals)
    - TOXICOLOGY AND ENVIRONMENTAL SAFETY (54 journals)
    - WASTE MANAGEMENT (18 journals)

ENVIRONMENTAL STUDIES (822 journals)                  1 2 3 4 5 | Last

Showing 1 - 200 of 378 Journals sorted alphabetically
ACS Chemical Health & Safety     Hybrid Journal   (Followers: 4)
ACS Environmental Au     Open Access  
ACS ES&T Engineering     Hybrid Journal   (Followers: 2)
Acta Brasiliensis     Open Access  
Acta Ecologica Sinica     Open Access   (Followers: 9)
Acta Environmentalica Universitatis Comenianae     Open Access  
Acta Limnologica Brasiliensia     Open Access   (Followers: 3)
Acta Oecologica     Hybrid Journal   (Followers: 11)
Acta Regionalia et Environmentalica     Open Access   (Followers: 1)
Advanced Electronic Materials     Hybrid Journal   (Followers: 5)
Advanced Energy and Sustainability Research     Open Access   (Followers: 4)
Advanced Sustainable Systems     Hybrid Journal   (Followers: 5)
Advances in Ecological Research     Full-text available via subscription   (Followers: 41)
Advances in Environmental Chemistry     Open Access   (Followers: 9)
Advances in Environmental Sciences - International Journal of the Bioflux Society     Open Access   (Followers: 12)
Advances in Environmental Technology     Open Access  
Advances in Life Science and Technology     Open Access   (Followers: 10)
Advances in Tropical Biodiversity and Environmental Sciences     Open Access   (Followers: 3)
Aeolian Research     Hybrid Journal   (Followers: 6)
African Journal of Environmental Science and Technology     Open Access   (Followers: 2)
Agricultura Tecnica     Open Access   (Followers: 1)
Agricultural & Environmental Letters     Open Access   (Followers: 3)
Agro-Science     Full-text available via subscription   (Followers: 1)
Agroecological journal     Open Access  
Agronomy for Sustainable Development     Open Access   (Followers: 18)
Agrosystems, Geosciences & Environment     Open Access   (Followers: 3)
Amazon's Research and Environmental Law     Open Access   (Followers: 2)
Ambiens. Revista Iberoamericana Universitaria en Ambiente, Sociedad y Sustentabilidad     Open Access  
American Journal of Energy and Environment     Open Access   (Followers: 4)
American Journal of Environmental Engineering     Open Access   (Followers: 6)
American Journal of Environmental Protection     Open Access   (Followers: 3)
American Journal of Environmental Sciences     Open Access   (Followers: 8)
American Naturalist     Full-text available via subscription   (Followers: 78)
Annals of Civil and Environmental Engineering     Open Access   (Followers: 2)
Annals of Environmental Science and Toxicology     Open Access   (Followers: 2)
Annals of GIS     Open Access   (Followers: 29)
Annual Review of Ecology, Evolution, and Systematics     Full-text available via subscription   (Followers: 80)
Annual Review of Environment and Resources     Full-text available via subscription   (Followers: 16)
Annual Review of Pharmacology and Toxicology     Full-text available via subscription   (Followers: 36)
Annual Review of Resource Economics     Full-text available via subscription   (Followers: 9)
Applied and Environmental Soil Science     Open Access   (Followers: 14)
Applied Ecology and Environmental Sciences     Open Access   (Followers: 28)
Applied Environmental Education & Communication     Hybrid Journal   (Followers: 15)
Applied Journal of Environmental Engineering Science     Open Access   (Followers: 1)
Aquatic Ecology     Hybrid Journal   (Followers: 38)
Aquatic Toxicology     Hybrid Journal   (Followers: 23)
Arcada : Revista de conservación del patrimonio cultural     Open Access  
Architecture, Civil Engineering, Environment     Open Access   (Followers: 4)
Archives des Maladies Professionnelles et de l'Environnement     Full-text available via subscription  
Archives of Environmental and Occupational Health     Hybrid Journal   (Followers: 10)
Archives of Environmental Contamination and Toxicology     Hybrid Journal   (Followers: 12)
Archives of Environmental Protection     Open Access   (Followers: 3)
Archives of Toxicology     Hybrid Journal   (Followers: 20)
Arctic Environmental Research     Open Access  
Asian Journal of Environment & Ecology     Open Access  
Asian Journal of Rural Development     Open Access   (Followers: 9)
Asian Review of Environmental and Earth Sciences     Open Access   (Followers: 1)
ATBU Journal of Environmental Technology     Open Access   (Followers: 1)
Atmospheric and Climate Sciences     Open Access   (Followers: 32)
Atmospheric Environment     Hybrid Journal   (Followers: 72)
Atmospheric Environment : X     Open Access   (Followers: 2)
Augm Domus : Revista electrónica del Comité de Medio Ambiente de AUGM     Open Access  
Austral Ecology     Hybrid Journal   (Followers: 16)
Australasian Journal of Environmental Management     Hybrid Journal   (Followers: 8)
Australasian Journal of Human Security     Full-text available via subscription   (Followers: 1)
Australian Journal of Environmental Education     Full-text available via subscription   (Followers: 9)
Basic & Clinical Pharmacology & Toxicology     Hybrid Journal   (Followers: 13)
Basic and Applied Ecology     Hybrid Journal   (Followers: 21)
Behavioral Ecology     Hybrid Journal   (Followers: 56)
Behavioral Ecology and Sociobiology     Hybrid Journal   (Followers: 35)
Biocenosis     Open Access  
Biochar     Hybrid Journal   (Followers: 1)
Biodegradation     Hybrid Journal   (Followers: 2)
Biodiversity     Hybrid Journal   (Followers: 23)
Biofouling: The Journal of Bioadhesion and Biofilm Research     Hybrid Journal   (Followers: 2)
Bioremediation Journal     Hybrid Journal   (Followers: 4)
BioRisk     Open Access   (Followers: 2)
BMC Ecology     Open Access   (Followers: 24)
Boletín Instituto de Derecho Ambiental y de los Recursos Naturales     Open Access  
Boletín Semillas Ambientales     Open Access  
Boston College Environmental Affairs Law Review     Open Access   (Followers: 5)
Bothalia : African Biodiversity & Conservation     Open Access  
Built Environment     Full-text available via subscription   (Followers: 5)
Bulletin of Environmental Contamination and Toxicology     Hybrid Journal   (Followers: 10)
Bulletin of the American Meteorological Society     Open Access   (Followers: 60)
Bumi Lestari Journal of Environment     Open Access  
Canadian Journal of Earth Sciences     Hybrid Journal   (Followers: 21)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 51)
Canadian Journal of Soil Science     Full-text available via subscription   (Followers: 12)
Canadian Water Resources Journal     Hybrid Journal   (Followers: 18)
Capitalism Nature Socialism     Hybrid Journal   (Followers: 20)
Carbon Capture Science & Technology     Open Access   (Followers: 6)
Carbon Resources Conversion     Open Access   (Followers: 2)
Case Studies in Chemical and Environmental Engineering     Open Access  
Cell Biology and Toxicology     Hybrid Journal   (Followers: 10)
Chain Reaction     Full-text available via subscription  
Challenges in Sustainability     Open Access   (Followers: 9)
Chemical Research in Toxicology     Hybrid Journal   (Followers: 22)
Chemico-Biological Interactions     Hybrid Journal   (Followers: 3)
Chemosphere     Hybrid Journal   (Followers: 16)
Child and Adolescent Mental Health     Hybrid Journal   (Followers: 68)
Ciencia, Ambiente y Clima     Open Access  
City and Environment Interactions     Open Access   (Followers: 2)
Civil and Environmental Engineering     Open Access   (Followers: 6)
Civil and Environmental Engineering Reports     Open Access   (Followers: 3)
Civil and Environmental Research     Open Access   (Followers: 15)
CLEAN - Soil, Air, Water     Hybrid Journal   (Followers: 17)
Clean Technologies and Environmental Policy     Hybrid Journal   (Followers: 4)
Cleaner Environmental Systems     Open Access   (Followers: 5)
Cleaner Production Letters     Hybrid Journal   (Followers: 6)
Cleanroom Technology     Full-text available via subscription   (Followers: 1)
Climate and Energy     Full-text available via subscription   (Followers: 5)
Climate Change Ecology     Open Access   (Followers: 11)
Climate Change Economics     Hybrid Journal   (Followers: 35)
Climate Policy     Hybrid Journal   (Followers: 45)
Climate Resilience and Sustainability     Open Access   (Followers: 18)
Coastal Engineering Journal     Hybrid Journal   (Followers: 7)
Cogent Environmental Science     Open Access  
Columbia Journal of Environmental Law     Open Access   (Followers: 12)
Computational Ecology and Software     Open Access   (Followers: 9)
Computational Water, Energy, and Environmental Engineering     Open Access   (Followers: 5)
Conservation and Society     Open Access   (Followers: 12)
Conservation Letters     Open Access   (Followers: 48)
Conservation Science     Open Access   (Followers: 26)
Consilience : The Journal of Sustainable Development     Open Access   (Followers: 2)
Contemporary Problems of Ecology     Hybrid Journal   (Followers: 4)
Critical Reviews in Environmental Science and Technology     Hybrid Journal   (Followers: 11)
Critical Reviews in Toxicology     Hybrid Journal   (Followers: 26)
Cuadernos de Investigación Geográfica / Geographical Research Letters     Open Access  
Culture, Agriculture, Food and Environment     Hybrid Journal   (Followers: 21)
Culture, Agriculture, Food and Environment     Hybrid Journal   (Followers: 9)
Current Environmental Health Reports     Hybrid Journal   (Followers: 1)
Current Forestry Reports     Hybrid Journal   (Followers: 1)
Current Landscape Ecology Reports     Hybrid Journal   (Followers: 2)
Current Opinion in Environmental Science & Health     Hybrid Journal  
Current Opinion in Environmental Sustainability     Hybrid Journal   (Followers: 14)
Current Research in Ecological and Social Psychology     Open Access   (Followers: 6)
Current Research in Environmental Sustainability     Open Access   (Followers: 2)
Current Research in Green and Sustainable Chemistry     Open Access  
Current Research in Microbiology     Open Access   (Followers: 21)
Current Sustainable/Renewable Energy Reports     Hybrid Journal   (Followers: 7)
Die Bodenkultur : Journal of Land Management, Food and Environment     Open Access  
Disaster Prevention and Management     Hybrid Journal   (Followers: 29)
Discover Sustainability     Open Access   (Followers: 2)
disP - The Planning Review     Hybrid Journal   (Followers: 1)
Drug and Chemical Toxicology     Hybrid Journal   (Followers: 13)
Duke Environmental Law & Policy Forum     Open Access   (Followers: 7)
Dynamiques Environnementales     Open Access  
E3S Web of Conferences     Open Access  
Earth and Environmental Science Transactions of the Royal Society of Edinburgh     Hybrid Journal   (Followers: 5)
Earth Interactions     Open Access   (Followers: 11)
Earth Science Informatics     Hybrid Journal   (Followers: 5)
Earth System Governance     Open Access  
Earth System Science Data (ESSD)     Open Access   (Followers: 7)
Earth Systems and Environment     Hybrid Journal   (Followers: 2)
EchoGéo     Open Access  
Eco-Thinking     Open Access   (Followers: 2)
Ecocycles     Open Access   (Followers: 4)
Ecohydrology     Hybrid Journal   (Followers: 8)
Ecohydrology & Hydrobiology     Full-text available via subscription   (Followers: 4)
Ecologia Aplicada     Open Access  
Ecología en Bolivia     Open Access  
Ecological Applications     Full-text available via subscription   (Followers: 135)
Ecological Chemistry and Engineering S     Open Access   (Followers: 2)
Ecological Complexity     Hybrid Journal   (Followers: 7)
Ecological Engineering     Hybrid Journal   (Followers: 4)
Ecological Indicators     Hybrid Journal   (Followers: 20)
Ecological Informatics     Hybrid Journal   (Followers: 3)
Ecological Management & Restoration     Hybrid Journal   (Followers: 15)
Ecological Modelling     Hybrid Journal   (Followers: 69)
Ecological Monographs     Full-text available via subscription   (Followers: 36)
Ecological Processes     Open Access   (Followers: 2)
Ecological Questions     Open Access   (Followers: 4)
Ecological Research     Hybrid Journal   (Followers: 10)
Ecological Restoration     Full-text available via subscription   (Followers: 21)
Ecologist, The     Full-text available via subscription   (Followers: 22)
Ecology     Full-text available via subscription   (Followers: 340)
Ecology and Evolution     Open Access   (Followers: 90)
Ecology Letters     Hybrid Journal   (Followers: 240)
EcoMat : Functional Materials for Green Energy and Environment     Open Access  
Economics and Policy of Energy and the Environment     Full-text available via subscription   (Followers: 13)
Économie rurale     Open Access   (Followers: 3)
Ecoprint : An International Journal of Ecology     Open Access   (Followers: 4)
Ecopsychology     Hybrid Journal   (Followers: 7)
Ecosphere     Open Access   (Followers: 8)
Ecosystem Services     Hybrid Journal   (Followers: 7)
Ecosystems     Hybrid Journal   (Followers: 31)
Ecosystems and People     Open Access   (Followers: 2)
Ecotoxicology     Hybrid Journal   (Followers: 9)
Ecotoxicology and Environmental Safety     Hybrid Journal   (Followers: 10)
Ecotrophic : Journal of Environmental Science     Open Access  
Ecozon@ : European Journal of Literature, Culture and Environment     Open Access   (Followers: 4)
Éducation relative à l'environnement     Open Access  
Electronic Green Journal     Open Access   (Followers: 4)
Empowering Sustainability International Journal     Open Access   (Followers: 5)
Energy & Environmental Science     Hybrid Journal   (Followers: 32)
Energy and Climate Change     Hybrid Journal   (Followers: 9)
Energy and Environment Focus     Free   (Followers: 7)
Energy and Environment Research     Open Access   (Followers: 13)
Energy and Environmental Engineering     Open Access   (Followers: 5)

        1 2 3 4 5 | Last

Similar Journals
Journal Cover
Aquatic Ecology
Journal Prestige (SJR): 0.656
Citation Impact (citeScore): 2
Number of Followers: 38  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1573-5125 - ISSN (Online) 1386-2588
Published by Springer-Verlag Homepage  [2468 journals]
  • Heavy metal phytoremediation of aqueous solution by Typha domingensis

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      Abstract: More has yet to be indicated on the ability of microphyte plants for the removal of heavy metals from contaminated environments. In the present research, the ability of the aquatic macrophyte, Typha domingensis species, for the phytoremediation of heavy metals (Zn, Cd, Ni, Pb, and Cr) in aqueous solution was investigated. Accordingly, 50 plants of T. domingensis species were harvested from Shadegan International Wetland, Iran. The plants were then translocated in the aquariums containing water contaminated with heavy metals (Zn, Cd, Ni, Pb, Cr) at concentrations between 0 (as control) and 20 mg L−1 in two different pHs (4 and 7) for 30 days. Plant absorption of heavy metals, determined for different plant tissues, increased with increase in heavy metal concentration and decrease in water pH. The highest total uptake of heavy metals was in the following order: Zn (77.5%) > Pb (70.2%) > Ni (63.1%) > Cr (47.8%) > Cd (38.2%), with the order tissue of roots > stems > leaves > flowers. Plant roots had the highest values of bioconcentration (BCF) factor for Zn (2.16) > Pb (1.66) > Ni (1.46) > Cr (1.09) > Cd (0.94). However, compared with the leaves and flowers, plant aerial parts indicated the highest TF values, by the following order: Zn (0.95) > Pb (0.94) > Ni (0.90) > Cr (0.85) > Cd (0.79). T. domingensis is a heavy metal hyperaccumulator and can be efficiently used for the phytoremediation of aqueous solutions, contaminated with heavy metals including Zn, Pb, Ni, Cr, and Cd.
      PubDate: 2022-01-25
       
  • The invasive crayfish Faxonius immunis causes the collapse of
           macroinvertebrate communities in Central European ponds

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      Abstract: The invasive crayfish Faxonius immunis is regarded as a threat to amphibians and macroinvertebrates in the Upper Rhine Valley, Germany, eradicating macrophytes and establishing high-density populations in stagnant waters. This study investigates the macroinvertebrate community structure of five conservation ponds south of Karlsruhe, Germany, to identify effects caused by this invasive crayfish. Two of the ponds had a high population density of F. immunis, two were expected to have lower crayfish densities as they had been habitat modified with gravelled water beds as a crayfish management approach, and one pond was known to be free of crayfish but contained fish. The macroinvertebrate communities were analyzed considering their species richness and composition. The relative density of F. immunis within the samples was regarded as a representative indicator for crayfish population density and tested for its influence on the ordination along with habitat composition and abiotic factors using distance-based redundancy analysis. F. immunis was identified as a driving factor of the macroinvertebrate communities of sampled ponds. Additionally, this study indicates that gravelling ground beds as a management method for invasive burrowing crayfish species does not significantly influence the community composition but can minimize indirect effects caused by F. immunis.
      PubDate: 2022-01-23
       
  • An unavoidably short history of inland aquatic animal diversity research
           in the US Virgin Islands

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      Abstract: The first freshwater species from the US Virgin Islands (USVI) was described 190 years ago, but research on inland aquatic animals, particularly invertebrates, remains limited. Due to a complex history of European colonization in the Caribbean, natural history writings about inland aquatic diversity for the USVI began almost 250 years later than those from elsewhere. Those early writings were produced primarily by clergy and largely recorded indigenous knowledge from other islands. Proposed in the first natural history by West in 1793, and reinforced later by Ledru in 1810, an assumption emerged that Puerto Rico and USVI faunas were almost identical. This partially explains the paucity of work in almost all aquatic faunal groups but birds. We review the history of inland aquatic faunal observations and studies in the USVI, from pre-Columbian traditions to recent faunal assessments. We discuss the pivotal Scientific Survey of Porto Rico and the Virgin Islands and the importance of local and foreign naturalists and taxonomists for our understanding of aquatic biota. Since 1900, 155 articles included observations on USVI inland aquatic animals, without clear trends toward increased or decreased publication output since the 1960s. Taxonomic bias toward studies on insects and birds, and geographic bias toward vertebrate work from St. Croix, are evident. Descriptive articles overwhelmingly outnumber manipulative ones. Despite overlap between USVI and Puerto Rican inland aquatic vertebrate faunas, recent surveys from St. Thomas have documented many new records and undescribed aquatic invertebrates. The historical assumption that the two faunas are equivalent appears to depend on taxonomic context. This hypothesis requires further evaluation.
      PubDate: 2022-01-23
       
  • Induction of Staghorn coral settlement and early post-settlement survival
           in laboratory conditions

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      Abstract: Acropora cervicornis have suffered massive mortalities in the Caribbean, and decades later are yet to recover. Coral recruitment through larval settlement is critical for the recovery of this species. Currently, there is little information available regarding the requirements for the settlement and post-settlement survival of A. cervicornis, and the mechanisms by which larvae are induced to settle are poorly understood. We determined the rates of larval settlement and early survival in the presence of five crustose coralline algae (CCA) species and tested the effect of CCA chemical compounds and the physical structure of the algae on larval settlement. Settlement on CCA was higher (20–38%) compared to the negative control (sterilized seawater, 9%). Settlement also occurred in the absence of CCA, indicating that larvae settlement might be induced by bacterial biofilms. Settlement of A. cervicornis on CCA under controlled conditions is low compared to other Acropora species, and this may have implications for its recovery. There was a direct relationship between settlement and survival; higher survival was associated to the most inductive CCA species (i.e., Hydrolithon boergesenii 67% and Titanoderma prototypum 50%), while striking mortality was observed in presence of Neogoniolithon sp. (100%), which may be related to allelopathy or tissue sloughing. More larvae attached to substrates with CCA extract (52%) than in the negative control (4%). We conclude that settlement of A. cervicornis is initiated by chemical compounds present in CCA, and A. cervicornis prefers CCA species which favor post-settlement survival.
      PubDate: 2022-01-22
       
  • The effects of inter-annual fluctuations in precipitation, lake surface
           area, and wind speed on phytoplankton structure in three shallow
           Mediterranean lakes (Sakarya, Turkey)

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      Abstract: Phytoplankton biomass, diversity, functional groups (FGs), and environmental parameters in three shallow lakes were evaluated to show the inter-annual fluctuations in precipitation, lake surface area, and wind speed which might affect the community structure and distribution of phytoplankton. Three lakes (Taşkısığı, Little Akgöl, and Poyrazlar) in Sakarya province (Turkey) were sampled taking into account two periods (Period A and Period B). Monthly (PRE)–daily (dPRE) total precipitation, lake surface area, and monthly (WD)–daily (dWD) average wind speed values were obtained higher in Period B. Moreover, in Period B, probably due to increased runoff, high total phosphorus values were recorded which slightly triggers the increase in biomass. Besides, higher WD and dWD values have also caused biomass increase due to the reinforcement of nutrients to the water column from the sediment in this period. It is thought that the increase in the species richness and diversity values in Period B is related to the unstable environmental conditions as well as their relationship with water temperature, total phosphorus, orthophosphate, specific conductance, soluble silica, and pH. During the studied periods, 16 phytoplankton functional groups (FGs) were prominent in the total biomass; however, FGs F, N, X1, X2, Lo, and T were abundant during Period A, while Y, E, W1, and H1 were important components of phytoplankton during Period B. Light availability was low in both periods; therefore, FGs that prefer or are tolerant to low light conditions were dominant in the lakes. However, elevated light availability in some months of Period B has selected coda W1 and H1. Higher nutrient levels in Period B have also determined the distribution of the FGs, and FGs that prefer or are tolerant to high nutrient conditions were prominent in this period.
      PubDate: 2022-01-22
       
  • Lipid mediators in marine diatoms

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      Abstract: Diatoms are eukaryotic microalgae representing one of the major groups in the marine phytoplankton, accounting for up to 40% of annual productivity at sea. They are widely distributed in all aquatic environments, including extreme ones. To adapt and thrive in such different environments, diatoms have evolved several strategies, including the production of secondary metabolites and toxins as defence mechanisms. Despite the great ecological relevance of these organisms, the study of chemical interactions underlying intraspecific and interspecific communication is still an open field of research. To date, the best known example of chemical mediators in diatoms is represented by oxylipins. These compounds have multiple functions such as antipredator, antibacterial, infochemical and allelochemical, influencing the abundance and distribution of other species in the surrounding environments and eventually shaping the ecosystem functioning. Other lipidic compounds involved in chemical signalling in many organisms have been identified in diatoms, but their role in these microalgae is still poorly understood. In this review, we focus on lipidic secondary metabolites produced by diatoms, i.e. oxylipins, prostaglandins and sterols, their biosynthetic pathways and their established or putative role as infochemicals.
      PubDate: 2022-01-21
       
  • Aquatic chemical ecology meets ecotoxicology

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      Abstract: Chemical ecology and ecotoxicology are research directions that emerged between the 1950s and 1970s following a rise in awareness for info- or allelochemicals influencing biotic interactions or ecological and ecosystem consequences of anthropogenic pollutants. The aim of this paper, focussing mainly on freshwater systems, is to present already existing links between both disciplines and to outline the potential of a strengthened alliance for a better evaluation of environmental risks. A wide range of anthropogenic or natural contaminants may cause a so-called infodisruption, the disturbance of infochemical-mediated biotic interactions. Metals, pesticides and personal care products are among the most cited pollutants that might interfere with the chemical ecology of organisms. Given the widespread environmental pollution in the current era of the Anthropocene, it seems important to consider disturbances such as “infodisruption” in environmental risk assessment. Chemical ecology can provide new response factors that might help identifying sublethal effects of pollutants. Further, exploring natural, non-toxic alternatives to currently used biocides can help in risk management. The link between both disciplines should be fostered as both are already multi- and interdisciplinary fields, and developing common themes between chemical ecology and ecotoxicology might enhance a deeper understanding of ecological processes. It can also help to achieve the aim of the 2020 European chemicals strategy for sustainability towards a toxic-free environment.
      PubDate: 2022-01-17
       
  • Fishermen’s knowledge and conservation attitudes: focus on the great
           cormorant Phalacrocorax carbo (Linnaeus, 1758) in the Minho River,
           Portugal

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      Abstract: Considerate the attitudes of traditional communities and their local ecological knowledge (LEK) can contribute to better policymaking and more appropriate management plans. Thus, this study strived to share the Minho River’s fishermen LEK about great cormorant Phalacrocorax carbo (Linnaeus, 1758), as well as it exposes their conservation attitudes towards this species. We described and analysed interviewees’ LEK qualitatively, while their attitudes were analysed quantitatively through correlation with variables from fishermen’s profile. Fishermen were able to identify cormorant’s ecological characteristics like habitats, prey species, and foraging behaviour. They also exposed an overall moderate attitude towards the conservation of great cormorants. The LEK often was supported by published data, but we found diverse information in some themes, such as habitat and diet. We found a significant negative correlation between fishermen’s age and attitudes (p = 0.02), and those fishermen who often fished contrasted significantly from those who rarely fished (p = 0.02). We lastly reaffirm the importance of the present study as background information regarding P. carbo in Minho River and of ethnobiological studies as a tool for management plans.
      PubDate: 2022-01-17
       
  • Composition and indication of plankton fatty acids under the influence of
           environmental factors in the Hongfeng Reservoir, Southwest China

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      Abstract: To clarify the indication of plankton fatty acids (FAs) under the influence of the natural environmental factors that affect FA composition and transmission, the Hongfeng Reservoir was investigated including plankton community structure and FA composition as well as the physical and chemical indicators of water quality. Thereafter, redundancy analysis (RDA) was performed to analysis the pattern of plankton FA composition during August 2018 to July 2019. The results showed that water quality indicators, including total phosphorus (TP), total nitrogen (TN), chlorophyll a (Chl a), pH, and DO, exerted significant influence on plankton FA composition. It was also observed that Cyanophyta (Pseudanabaena limnetica, Merismopedia and Cylindrospermopsis raciborskii) and copepod (Mongolodiaptomus birulai) constituted the dominant phytoplankton and zooplankton communities, respectively. Further, Saturated fatty acids (SFAs) presented a relatively intuitive indication of the changes in the community structure of Cyanophyta. One of the MUFAs (C16:1) content reflected Bacillariophyta community structure changes. Additionally, there is a good indicational effect between C18:2ω6 and cladocerans, which exhibit a feeding phenomenon toward Cryptophyta. Rotifers obtained C20:2 through Pyrrophyta in order to get polyunsaturated fatty acids (PUFAs). EPA is indication of rotifers. The research results can provide theoretical support for understanding the mechanism of fatty acid transfer among plankton.
      PubDate: 2022-01-13
       
  • Sphagnum physiological responses to elevated temperature, nitrogen, CO2
           and low moisture in laboratory and in situ microhabitats: a review

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      Abstract: Sphagnum mosses are considered peatland engineers because of their ability to create conditions inducing carbon accumulation. Here, we report on a review of the effects of four environmental variables (elevated temperature, N and CO2 and reduced moisture) on the capitulum biomass, length increment, respiration, photosynthetic capability, N and P exchange and content of the 3 most studied Sphagnum subgenera (Acutifolia, Cuspidata, Sphagnum). Overall, we observe that, when compared to in situ experiments, laboratory experiments tend to exacerbate length increments and underestimate maximum photosynthesis in most of the studies inventoried. This review underscores some differences among results that can be associated with the used of different protocols (e.g. exposure time, instrumental analysis). Studies that investigated the impact of elevated temperature (2–5 °C) on Sphagnum reveal an increase in length, respiration and photosynthesis regardless of the experimental conditions and subgenus. Elevated N (3–23 g Nm−2y−1) on the other hand appears to reduce the length increment but had contrasting effects on photosynthesis. Some divergent responses are found with Cuspidata species because of their tolerance to high doses of N. Low moisture reduces the length increment and photosynthesis of species of the Cuspidata and Sphagnum subgenera but has different effects on species of the Acutifolia subgenus, which are relatively tolerant to water fluctuations. Responses to elevated CO2 have no clear trends reported. Allelochemical interactions between Sphagnum, their microbiome or surrounding mosses or other plants were found to be determinant to Sphagnum responses under those variables and reinforce the interest of such investigations.
      PubDate: 2022-01-12
       
  • The effect of salinity on the grazing rate and survival of Daphnia magna
           females adapted to different salinities

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      Abstract: The cladoceran Daphnia magna inhabits lakes with salinities up to 10 g L−1. We compared the effects of different salinities (up to 9 g L−1) on the survival, specific grazing rate, and size selective feeding of Daphnia females adapted to fresh or saline waters (3–4 g L−1). The freshwater population was more sensitive to high salinity (LC50 = 5.3 g L−1), while the survival of the saline water population also decreased in fresh water. Freshwater population demonstrated a higher grazing rate in fresh water, while the saline water population had a higher grazing rate at the salinity above 3 g L−1. A decrease in the grazing rate of the freshwater population was observed at the salinity above 4–5 g L−1. Populations differed in food selectivity. The saline water population consumed particles of larger sizes than the freshwater population. The average size of phytoplankton particles grazed in fresh water was larger than in saline water. This size selective salinity-dependent grazing may be related to the dependence of the feeding efficiency of cladocerans on the viscosity of water and size of phytoplankton particles. Our results indicate that Daphnia populations adapted to a certain salinity can temporarily lose the ability to control phytoplankton because of salinity fluctuations.
      PubDate: 2022-01-11
       
  • Single and combined effects of two trace elements (Cd and Cu) on the
           asexual reproduction of Aurelia sp. polyps

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      Abstract: Jellyfish blooms are an increasingly common event in our seas. Occurring via polyps’ asexual reproduction induced by human stresses, they represent a hazard for ecosystems equilibrium. The aim of this study is to highlight polyps underrated role during these events by investigating cadmium (Cd) and copper (Cu) exposure on Aurelia sp. polyps under laboratory conditions. Cd treatments seemed to not cause toxic effects on polyps up to 1000 μg/L, while 150 μg/L of Cu resulted above polyps’ tolerance for the metal, leading to a 62% of mortality and inducing the regression-regeneration cycle of polyps. Surprisingly, combined treatments of Cd and Cu had lesser effects, working antagonistically. Our results show how, in natural conditions, the chosen concentrations and combinations could not represent a hazard for polyps, instead, they stimulate the asexual reproduction, supporting the hormesis and, through jellyfish blooms, altering the Good Environmental Status aimed by the Marine Strategy Framework Directive.
      PubDate: 2022-01-10
       
  • Responses of early recruitment processes with rhizome to flooding depth
           and salinity in Manchurian wild rice (Zizania latifolia)

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      Abstract: Environmental stress, such as intense rainfall, drought and salinization, is predicted to increase not only in intensity, but also in frequency under future climate scenarios. Quantitative information about the response of the early recruitment process to environmental stress is essential for predicting the species distribution pattern; however, it is still lacking. We conducted an experiment in the rainproof shelter to investigate the response of early recruitment processes of Zizania latifolia at flooding depths of 0, 5, 15 and 30 cm and salinity of 0, 5, 15, 30 and 50 mmol/L. The effects of flooding depth and salinity on rhizome bud sprouting, shoot survival, and shoot early growth of Z. latifolia were investigated. The results showed that the interaction between flooding depth and salinity had no significant effect on the rhizome bud sprouting and obviously affected the shoot early growth. Flooding reduced final sprouting percentage and shoot survival, but enhanced the half-final sprouting time, absolute growth rate and shoot height. Salinity has no effect on final sprouting percentage and shoot survival. Both absolute growth rate and shoot height showed a unimodal relationship with salinity, while the half-final sprouting time showed a u-shaped pattern along the salinity gradient. We therefore conclude that Z. latifolia may be used for vegetation restoration of mild salinized wetlands (salinity less than 15 mmol/L), and artificially reducing the flooding depth (below 15 cm) during the establishment stage will be more conducive to the expansion of the Z. latifolia in the salt marsh.
      PubDate: 2022-01-09
       
  • Allelopathic effects of male and female calanoids and cyclopoids
           (Copepoda) on the demographic response of Brachionus havanaensis
           (Rotifera)

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      Abstract: We hypothesized that cyclopoids, being predators, have a stronger allelopathic influence than calanoids on life-history variables of herbivorous rotifers. To test this hypothesis, we quantified the allelopathic effects of conditioned medium obtained separately from males and females of a calanoid (Arctodiaptomus dorsalis) and a cyclopoid (Mesocyclops longisetus) on the life table demography of the rotifer Brachionus havanaensis. The conditioned medium of the male and female A. dorsalis and male M. longisetus caused a significant reduction (14–18%) in the life expectancy at birth of B. havanaensis. Gross and net reproductive rates of rotifers reduced significantly on the conditioned medium of male or female A. dorsalis; however, the conditioned medium from either sex of M. longisetus had no significant effect on these variables. The population growth rate, r, varied from 0.53 to 0.64 d−1 depending on the treatment; the r was significantly lower when cultured on the conditioned medium from A. dorsalis (males or females) and female M. longisetus Contrary to our hypothesis, calanoid allelochemicals adversely affected the life history variables of rotifers more than those produced by the cyclopoids.
      PubDate: 2022-01-08
       
  • Invertebrates in small shallow lakes and ponds: a new sampling method to
           study the influence of environmental factors on their communities

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      Abstract: Small shallow lakes (SSL) are reservoirs of biodiversity and provide numerous ecosystem services. Therefore, tools to easily and rapidly assess the biological integrity and conservation value of these aquatic ecosystems have been increasingly requested by environmental managers. In this study, we propose a new sampling method for monitoring aquatic invertebrates. This method, called S3i, allows to sample SSL with a surface area from 1 m2 to at least 20 ha. We applied the method to 268 SSL in France and used generalised additive models to investigate factors that correlate with (1) total richness, and (2) richness and relative abundance of functional group ε, i.e. group of taxa exclusive of SSL richness and determining SSL functioning. Elevation, surface area, and distance from the source—a proxy of river and watershed connectivity—were identified as determinants of invertebrate richness. Invasive crayfish may directly impact total and ε-richness, whereas fish impact ε-richness and ε-abundances. Shoreline vegetation and vegetation cover were especially determinant for total richness, ε-richness, and ε-relative abundance. The S3i was successfully applied to a wide diversity of SSL in France. The sampling method can be considered as rapid, reproductible, and representative for monitoring aquatic invertebrates in SSL and should be applied to the management of a worldwide range of small shallow lakes.
      PubDate: 2022-01-06
       
  • Habitat destruction in wetland affects Ostracoda (Crustacea) species
           occurrence patterns amid different aquatic habitats

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      Abstract: To outline influence of anthropogenic activities on natural aquatic habitats such as wetlands, we sampled ostracods along with measuring several different aquatic variables at four different aquatic bodies between 2019 and 2020 in the Hıdırşeyhler Village (Bolu, Turkey). We found 15 living and 10 subfossil ostracods. Species with high tolerances (Eucypris virens) and/or with swimming abilities (Cypria ophtalmica) were reported from the canal and wetland. Non-swimmer ostracods (e.g., Prionocypris zenkeri) were only found from the creek. Ostracod Watch Model illustrated some species with stenochronal and eurychronal (e.g., Heterocypris incongruens) occurrences per site. CCA results displayed that water temperature and electrical conductivity were the most important explanatory variables on species. Unbiased diversity indices revealed the highest diversity in the canal followed by the creek, wetland, and trough. Wetland diversity exhibited positive and negative correlations with the canal and the creek, respectively. Tukey’s pairwise test supported the significant comparisons between the trough, canal, and wetland (p < 0.01). The ratio of tolerant species per station was slightly higher in the canal than the wetland, trough, and creek. This suggests the fact that species encountered from the creek seem to be habitat specific and may be considered more vulnerable to changes in aquatic conditions. Frequency of species encountered in three habitats (wetland, canal, and trough) was significantly changed after the construction (digging and converting the wetland) activities began in August 2019. This activity was a negative impact on species diversity and richness in the wetland area where the diversity sharply dropped down and did not recover during the study. In contrast, this was probably advantage for some cosmoecious species.
      PubDate: 2022-01-06
       
  • A pheromone bouquet controls the reproductive behaviour of the male shore
           crab, Carcinus maenas

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      Abstract: The reproduction of many brachyuran crustaceans involves the formation of mating pairs often around the time of the female moult with attraction of a sexual partner and mating behaviour controlled by sex pheromones. In shore crabs, Carcinus maenas, females produce sex pheromones that are released in the urine. High Performance Liquid Chromatography analysis (HPLC) of female urine shows that the pheromone, identified as the nucleotide uridine diphosphate (UDP), elutes as an unresolved peak with structurally related nucleotides. We examined female urine samples over the moult cycle and detected UDP as well as uridine triphosphate (UTP). Bioassays were conducted to establish the possibility of a blend of nucleotides forming a sex pheromone bouquet in C. maenas. Whilst UDP induced the male mate guarding behaviour (cradling), a mixture of the two nucleotides at a ratio of 4:1 UDP:UTP elicited an even stronger mating response than either UDP or UTP individually. The urine concentration and composition of these nucleotides changes over the moult period pre and post ecdysis, providing evidence that a pheromone bouquet composition is not always constant. The change of the bouquet is related to the physiological state of the sender, here the moult cycle. Our study unravels the functionality of reaction-specific molecules in a pheromone bouquet. Whilst UDP is the mating signal, UTP acts as an attractant and combined they maximise the reproductive response. The use of bouquets provides species-specificity, potentially enabling reproductive isolation of sympatric species, and contains valuable information on the physiological state of the sender.
      PubDate: 2021-12-24
       
  • Correction to: Toward a phylogeny and biogeography of Diaphanosoma
           (Crustacea: Cladocera)

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      PubDate: 2021-12-01
       
  • A critical assessment of the stoichiometric knife-edge: no evidence for
           artifacts caused by the experimental P-supplementation of algae

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      Abstract: The stoichiometric knife-edge refers to the reduced performance of consumers encountering food with excess phosphorus (P) relative to carbon (C) or nitrogen (N). Studies that provide evidence for such knife-edge in aquatic systems often apply phosphate supplementation to create P-rich food treatments. However, this method may suffer from artifacts, because after uptake algae may store P in a form different from the P-rich biomolecules typically consumed by zooplankton. Our aim was to test if P supplementation results in potential biases. We experimentally exposed populations of the herbivore rotifer species, Brachionus calyciflorus (Pallas), to four different food quality treatments: algae grown under P-saturating (HPchem, molar C:P ratio = 59.7 ± 2.7) and P-sufficient (MPchem, molar C:P = 116.3 ± 5.2) conditions in chemostats, and algae grown under P-limiting conditions, but with molar C:P ratios equal to HPchem and MPchem treatments, respectively (HPLP+P, molar C:P = 59.8 ± 0.14; MPLP+P, molar C:P = 121.0 ± 4.3). The latter two treatments were achieved through P-supplementation of P-limited algae. Results show that for rotifers fed algae with either excess or intermediate P content, population growth rates were consistently higher on algae grown in chemostats than algae treated with the P supplementation method. Importantly, growth rates were also consistently lower in HP than in MP treatments and the magnitude of this negative impact was independent on algal growth history. The latter result confirms the existence of a stoichiometric knife-edge and indicates that P supplementation is a reliable method to study the relative effect of excess P on zooplankton performance in a standardized way.
      PubDate: 2021-12-01
       
  • Plasticity in depth selection behavior and heat shock proteins in Daphnia

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      Abstract: Habitat selection behavior by aquatic and terrestrial animals is influenced by both abiotic (e.g., temperature) and biotic (e.g., threat from predators) environmental factors. In this study, the mechanisms underlying the variability in behavior of habitat selection of Daphnia under environmental stress were examined. Experiments were conducted using five Daphnia clones with different environmental preferences and, consequently, with a different width of the reaction norm. These clones also showed variation in their constitutive levels of stress-related heat shock proteins (HSP60, HSP70 and HSP90), but none of the tested stress factors had any direct effect on their expression. However, behavioral plasticity was significantly positively correlated with the constitutive level of HSP70. It is likely that animals with a high constitutive HSP70 level can cope better with sudden changes in environment conditions that they experience, e.g., during vertical migrations. In contrast, non-migrating animals with low HSP levels do not allocate energy to the synthesis of stress proteins and have a narrow range of behavioral plasticity.
      PubDate: 2021-12-01
       
 
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