277,197 results match your criteria habitat

Soil type shapes the antibiotic resistome profiles of long-term manured soil.

Sci Total Environ 2021 Apr 27;786:147361. Epub 2021 Apr 27.

College of Resources and Environment, Southwest University, Chongqing 400716, China. Electronic address:

Animal manure fertilization facilitates the proliferation and dissemination of antibiotic resistance genes (ARGs) in soil, posing high risks to humans and ecosystem health. Although studies suggest that soil types could shape the ARG profiles in greenhouse soil, there is still a lack of comparative studies on the fate of ARGs in different types of manured soils under field trials. Thus, a metagenomic approach was used to decipher the fate of ARGs in 12-year long-term fertilized (inorganic fertilizer, compost manure and a mix of them) acidic, near-neutral and alkaline soils. Read More

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DNA metabarcoding and morphological methods show complementary patterns in the metacommunity organization of lentic epiphytic diatoms.

Sci Total Environ 2021 Apr 30;786:147410. Epub 2021 Apr 30.

Ecology Unit, University of León, Campus de Vegazana S/N, 24071 León, Spain; Institute of Environment, Natural Resources and Biodiversity, La Serna, 58, 24007 León, Spain. Electronic address:

Diatoms are important organisms in freshwater ecosystems due to their position as primary producers and therefore, analyzing their assemblages provides relevant information on ecosystem functioning. Diatoms have historically been identified based on morphological traits, which is time-consuming and requires well-trained specialists. Nevertheless, DNA barcoding offers an alternative approach to overcome some limitations of the morphological method. Read More

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Thermal tolerance, safety margins and vulnerability of coastal species: Projected impact of climate change induced cold water variability in a temperate African region.

Mar Environ Res 2021 Apr 29;169:105346. Epub 2021 Apr 29.

South African Institute for Aquatic Biodiversity, Makhanda, 6140, South Africa; Department of Ichthyology and Fisheries Science, Rhodes University, Makhanda, 6140, South Africa.

Anthropogenic induced climate change is predicted to increase the thermal variability in coastal waters, which can have strong physiological effects on individuals and populations of marine ectotherms. The magnitude and direction of these thermal effects varies depending on species, life stage, biogeography, habitat and season. This study aimed to compare the thermal tolerance of a range of juvenile fish and adult macro-invertebrates from intertidal and estuarine habitats in a warm-temperate, thermally variable region on the south-east coast of South Africa. Read More

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Effects of reclamation methods and habitats on macrobenthic communities and ecological health in estuarine coastal wetlands.

Mar Pollut Bull 2021 May 7;168:112420. Epub 2021 May 7.

School of Life Science, East China Normal University, Shanghai 200241, China; State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China. Electronic address:

This study compared the community structure of macrobenthos in bare tidal areas and vegetated regions under two reclamation patterns, fully enclosed and opened reclamation, in Yangtze wetland, China. Compared with fully enclosed reclamation areas, opened reclamation areas had higher water salinity, higher number of species and abundance, and less disturbed habitat health status. Compared with bare tidal areas, vegetated regions were more suitable for the survival of macrobenthos and its habitat health status was more stable. Read More

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Effect of microplastics on aquatic biota: A hormetic perspective.

Environ Pollut 2021 Apr 30;285:117206. Epub 2021 Apr 30.

CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences (CAS), Qingdao, 266071, PR China. Electronic address:

As emerging pollutants, microplastics (MPs) have been found globally in various freshwater and marine matrices. This study recompiled 270 endpoints of 3765 individuals from 43 publications, reporting the onset of enhanced biological performance and reduced oxidative stress biomarkers induced by MPs in aquatic organisms at environmentally relevant concentrations (≤1 mg/L, median = 0.1 mg/L). Read More

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One-pot pyrolysis of a typical invasive plant into nitrogen-doped biochars for efficient sorption of phthalate esters from aqueous solution.

Chemosphere 2021 May 3;280:130712. Epub 2021 May 3.

Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, 210037, PR China; National Positioning Observation Station of Hung-tse Lake Wetland Ecosystem in Jiangsu Province, Huaian, Jiangsu, 223100, PR China. Electronic address:

Invasive plants pose a significant threat to natural ecosystems because of their high adaptability, rapid propagation and spreading ability in the environment. In this study, a typical aquatic invasive plant, Pistia stratiotes, was chosen as a novel feedstock for the preparation of nitrogen-doped biochars (NBs) for the first time, and the NBs were used as efficient sorbents to remove phthalate esters (PAEs) from aqueous solution. Characterization results showed that NBs possess great pore structure (up to 126. Read More

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Ancient horse genomes reveal the timing and extent of dispersals across the Bering Land Bridge.

Mol Ecol 2021 May 10. Epub 2021 May 10.

Biomolecular Engineering, University Of California Santa Cruz, Santa Cruz, United States.

The Bering Land Bridge (BLB) last connected Eurasia and North America during the Late Pleistocene. Although the BLB would have enabled transfers of terrestrial biota in both directions, it also acted as an ecological filter whose permeability varied considerably over time. Here we explore the possible impacts of this ecological corridor on genetic diversity within, and connectivity among, populations of a once wide-ranging group, the caballine horses (Equus spp. Read More

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Effects of Cryopreservation on Acrosin Activity and DNA Damage of Russian Sturgeon (Acipenser gueldenstaedtii) Semen.

Cryo Letters 2021 May-Jun;42(3):129-136

Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences; Shanghai Engineering Research Center of Fisheries Stock Enhancement and Habitat Restoration of the Yangtze Estuary, Shanghai, China.

Background: Cryopreservation of sturgeon sperm can be successful, but there can be a decrease in sperm viability and the reasons are not clear.

Objective: To investigate variations in the acrosin activity and the DNA integrity of Acipenser gueldenstaedtii semen during cryopreservation at -196ºC.

Materials And Methods: Fish semen samples were randomly divided into three groups: [1] fresh control; [2] native semen diluted 1:1 with 23. Read More

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Assessment of losses to the local population due to restrictions on their ownership rights to land and property assets: The case of the Tunkinsky National Park, Russia.

PLoS One 2021 10;16(5):e0251383. Epub 2021 May 10.

Baikal Institute of Nature Management Siberian Branch of the Russian Academy of Sciences, Ulan-Ude, Republic Buryatia, Russia.

The impact of protected areas on local communities is the subject of intense discussions as part of the implementation of the global ecosystem protection agenda. Conflicts between the interests of environmental protection and the needs of socio-economic development become particularly acute when large areas of land are taken out of economic circulation as a result of organizing protected areas. In this case, there is an urgent need for detailed and reliable information about the social impacts of such land withdrawal on the well-being of the local population. Read More

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Interannual variability in net ecosystem carbon production in a rain-fed maize ecosystem and its climatic and biotic controls during 2005-2018.

PLoS One 2021 10;16(5):e0237684. Epub 2021 May 10.

Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.

Interannual variability (IAV) in net ecosystem carbon production (NEP) plays an important role in the processes of the carbon cycle, but the long-term trends in NEP and the climatic and biotic control of IAV in NEP still remain unclear in agroecosystems. We investigated interannual variability in NEP, expressed as annual values and anomalies, and its climatic and biotic controls using an eddy-covariance dataset for 2005-2018 for rain-fed spring maize in northeastern China. Average annual NEP was 270±31 g C m-2yr -1, with no significant changes over time. Read More

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The microbiome of deep-sea fish reveals new microbial species and a sparsity of antibiotic resistance genes.

Gut Microbes 2021 Jan-Dec;13(1):1-13

Teagasc Food Research Centre, Fermoy, Ireland.

Adaptation to life in the deep-sea can be dramatic, with fish displaying behaviors and appearances unlike those seen in any other aquatic habitat. However, the extent of which adaptations may have developed at a microbial scale is not as clear. Shotgun metagenomic sequencing of the intestinal microbiome of 32 species of deep-sea fish from across the Atlantic Ocean revealed that many of the associated microbes differ extensively from those previously identified in reference databases. Read More

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Thermoregulatory strategies of three reclusive lizards (genus Xantusia) from the Baja California peninsula, Mexico, under current and future microenvironmental temperatures.

J Exp Zool A Ecol Integr Physiol 2021 May 10. Epub 2021 May 10.

Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Ciudad de México, Mexico.

The thermal quality of the habitat is key for the regulation of body temperature in terrestrial ectotherms and, therefore, permits them to carry out their fundamental biological activities. In thermally heterogeneous environments, ectotherms might follow different behavioral or physiological strategies to maintain their body temperature within biologically adequate boundaries, for which they depend on microhabitat selection. These aspects are, thus, relevant in the context of habitat degradation and land-use change. Read More

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Comparative analysis of the intestinal bacterial communities in mud crab Scylla serrata in South India.

Microbiologyopen 2021 Mar;10(2):e1179

Marine Biology and Ecology Research Centre, University of Plymouth, Plymouth, UK.

Little is known about the functions of the crustacean gut microbiome, but environmental parameters and habitat are known to affect the composition of the intestinal microbiome, which may in turn affect the physiological status of the host. The mud crab Scylla serrata is an economically important species, and is wild-caught, and farmed across the Indo-Pacific region. In this study, we compared the composition of the gut microbiome (in terms of gut microbial species richness and abundance) of S. Read More

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Targeted elimination of species-rich larval habitats can rapidly collapse arbovirus vector mosquito populations at hotel compounds in Zanzibar.

Med Vet Entomol 2021 May 10. Epub 2021 May 10.

Department of Allied Health Sciences, School of Health and Medical Sciences, The State University of Zanzibar, Zanzibar, Tanzania.

Understanding the dynamics of larval habitat utilization by mosquito communities is crucial for the design of efficient environmental control strategies. The authors investigated the structure of mosquito communities found at hotel compounds in Zanzibar, networks of mosquito interactions with larval habitats and robustness of mosquito communities to elimination of larval habitats. A total of 23 698 mosquitoes comprising 26 species in six genera were found. Read More

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Alcohol ethoxysulfates (AES) in environmental matrices.

Environ Sci Pollut Res Int 2021 May 10. Epub 2021 May 10.

School of Environmental Studies, Cochin University of Science and Technology, Kochi, Kerala, 682022, India.

Extensive use of surfactants in numerous fields resulted in their discharge into various environmental compartments including soil, sediment, and water. Alcohol ethoxysulfates (AES) together with alcohol ethoxylates (AE), alkyl sulfates (AS), and linear alkyl benzene sulfonates (LAS) find wide variety of applications in consumer products including both domestic and industrial applications. Consequently, all these surfactants pose several concerns to both aquatic and human health. Read More

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Ecosystem engineering in the arboreal realm: heterogeneity of wood-boring beetle cavities and their use by cavity-nesting ants.

Oecologia 2021 May 10. Epub 2021 May 10.

Department of Biology and the Whitney R. Harris World Ecology Center, University of Missouri-St. Louis, St. Louis, MO, 63121, USA.

Wood-boring beetle larvae act as ecosystem engineers by creating stem cavities that are used secondarily as nests by many arboreal ant species. Understanding the heterogeneity and distribution of available cavities and their use by ants is therefore key to understanding arboreal ant community assembly and diversity. Our goals were to quantify the abundance and diversity of beetle-produced cavity resources in a tropical canopy, reveal how ants use these resources, and determine which characteristics of the cavity resource contribute to ant use. Read More

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Is Resource Change a Useful Predictor of Carrion Insect Succession on Pigs and Humans?

J Med Entomol 2021 May 10. Epub 2021 May 10.

School of Science, Psychology and Sport, Federation University Australia, Mount Helen, VIC 3350,Australia.

Carrion is a dynamic and nutrient-rich resource that attracts numerous insect species that undergo succession due to the rapid change in the carrion resource. Despite this process being well-understood, few studies have examined resource change as a driver of carrion insect succession, and instead have focused on the effects of time per se, or on coarse, qualitative measures such as decay stage. Here we report on three field succession experiments using pig carcasses and human cadavers encompassing two winters and one summer. Read More

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Use of sequential extraction and mercury stable isotope analysis to assess remobilization of sediment-bound legacy mercury.

Environ Sci Process Impacts 2021 May 10. Epub 2021 May 10.

Department of Earth and Environmental Sciences, University of Michigan, 1100 N. University Ave., Ann Arbor, MI 48109-1005, USA.

The goal of this project was to assess how anthropogenic legacy mercury (Hg) retained in streambed sediment may be remobilized to stream water. To do this, we performed sequential extractions and Hg isotope analyses on streambed sediment collected along the length of East Fork Poplar Creek, a point-source contaminated stream in Oak Ridge, Tennessee, USA. Legacy Hg within streambed sediment appears to have been isotopically fractionated by equilibrium isotope effects driven by isotope exchange between co-existing Hg(0) and Hg(ii) species, potentially over-printing fractionation patterns that would have been imparted by kinetic redox reactions. Read More

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Storm and fire disturbances in Europe: distribution and trends.

Glob Chang Biol 2021 May 9. Epub 2021 May 9.

Ecosystem Dynamics and Forest Management Group, Technical University of Munich, Hans-Carl-von-Carlowitz-Platz 2, 85354, Freising, Germany.

Abiotic forest disturbances are an important driver of ecosystem dynamics. In Europe, storms and fires have been identified as the most important abiotic disturbances in the recent past. Yet, how strongly these agents drive local disturbance regimes compared to other agents (e. Read More

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Complete mitochondrial genome of (Mediophyceae, Bacillariophyta).

Mitochondrial DNA B Resour 2021 Apr 26;6(4):1560-1562. Epub 2021 Apr 26.

CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.

is a species-rich genus with about 170 described species, many of which are harmful algal species with significant negative ecological impact. However, genome data of these species remain limited. In this study, the complete mitochondrial genome of (Hendey) Hasle 1973 was determined for the first time. Read More

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Genome-Wide Changes of Regulatory Non-Coding RNAs Reveal Pollen Development Initiated at Ecodormancy in Peach.

Front Mol Biosci 2021 9;8:612881. Epub 2021 Apr 9.

Genome Science and Technology Program, University of Tennessee, Knoxville, TN, United States.

Bud dormancy is under the regulation of complex mechanisms including genetic and epigenetic factors. To study the function of regulatory non-coding RNAs in winter dormancy release, we analyzed the small RNA and long non-coding RNA (lncRNA) expression from peach () floral buds in endodormancy, ecodormancy and bud break stages. Small RNAs underwent a major shift in expression primarily between dormancy and flowering with specific pairs of microRNAs and their mRNA target genes undergoing coordinated differential expression. Read More

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Prokaryotic diversity of tropical coastal sand dunes ecosystem using metagenomics.

3 Biotech 2021 May 4;11(5):252. Epub 2021 May 4.

Department of Microbiology, Goa University, Taleigao-Plateau, Goa 403206 India.

Coastal sand dunes (CSDs), unique, stressed and hostile habitats act as a barrier between marine and terrestrial ecosystems. CSDs are stressed in terms of nutrition and fluctuating physio-chemical conditions. CSD is classified into several types, each of which presents different challenges for life forms. Read More

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Maximum Entropy Modeling to Predict the Impact of Climate Change on Pine Wilt Disease in China.

Front Plant Sci 2021 23;12:652500. Epub 2021 Apr 23.

Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, Nanjing, China.

Pine wilt disease is a devastating forest disease caused by the pinewood nematode , which has been listed as the object of quarantine in China. Climate change influences species and may exacerbate the risk of forest diseases, such as the pine wilt disease. The maximum entropy (MaxEnt) model was used in this study to identify the current and potential distribution and habitat suitability of three pine species and in China. Read More

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Virus Prevalence and Genetic Diversity Across a Wild Bumblebee Community.

Front Microbiol 2021 22;12:650747. Epub 2021 Apr 22.

Centre for Ecology and Conservation, University of Exeter, Cornwall, United Kingdom.

Viruses are key population regulators, but we have limited knowledge of the diversity and ecology of viruses. This is even the case in wild host populations that provide ecosystem services, where small fitness effects may have major ecological impacts in aggregate. One such group of hosts are the bumblebees, which have a major role in the pollination of food crops and have suffered population declines and range contractions in recent decades. Read More

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Mycoplankton Biome Structure and Assemblage Processes Differ Along a Transect From the Elbe River Down to the River Plume and the Adjacent Marine Waters.

Front Microbiol 2021 23;12:640469. Epub 2021 Apr 23.

Molecular Ecology Group, University of Bremen, FB2, Bremen, Germany.

Rivers are transport systems and supply adjacent ecosystems with nutrients. They also serve human well-being, for example as a source of food. Microorganism biodiversity is an important parameter for the ecological balance of river ecosystems. Read More

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Organic Electron Donors and Terminal Electron Acceptors Structure Anaerobic Microbial Communities and Interactions in a Permanently Stratified Sulfidic Lake.

Front Microbiol 2021 23;12:620424. Epub 2021 Apr 23.

Department of Biological Sciences, Wellesley College, Wellesley, MA, United States.

The extent to which nutrients structure microbial communities in permanently stratified lakes is not well understood. This study characterized microbial communities from the anoxic layers of the meromictic and sulfidic Fayetteville Green Lake (FGL), NY, United States, and investigated the roles of organic electron donors and terminal electron acceptors in shaping microbial community structure and interactions. Bacterial communities from the permanently stratified layer below the chemocline (monimolimnion) and from enrichment cultures inoculated by lake sediments were analyzed using 16S rRNA gene sequencing. Read More

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A 30-Year Study of Impacts, Recovery, and Development of Critical Effect Sizes for Endocrine Disruption in White Sucker () Exposed to Bleached-Kraft Pulp Mill Effluent at Jackfish Bay, Ontario, Canada.

Front Endocrinol (Lausanne) 2021 22;12:664157. Epub 2021 Apr 22.

Biological Sciences, University of Calgary, Calgary, AB, Canada.

Jackfish Bay is an isolated bay on the north shore of Lake Superior, Canada that has received effluent from a large bleached-kraft pulp mill since the 1940s. Studies conducted in the late 1980s found evidence of reductions in sex steroid hormone levels in multiple fish species living in the Bay, and increased growth, condition and relative liver weights, with a reduction in internal fat storage, reduced gonadal sizes, delayed sexual maturation, and altered levels of circulating sex steroid hormones in white sucker (). These early studies provided some of the first pieces of evidence of endocrine disruption in wild animals. Read More

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Isolation and HPLC assisted quantification of two iridoid glycoside compounds and molecular DNA fingerprinting in critically endangered medicinal Royle ex Benth: implications for conservation.

Physiol Mol Biol Plants 2021 Apr 26;27(4):727-746. Epub 2021 Mar 26.

Department of Botany, University of Delhi, 110007 New Delhi, Delhi India.

is a medicinally important, high altitude perennial herb, endemic to the Himalayas. It possesses strong hepato-protective bioactivity that is contributed by two iridoid picroside compounds viz Picroside-I (P-I) and Picroside-II (P-II). Commercially, many based hepato-stimulatory Ayurvedic drug brands that use different proportions of P-I and P-II are available in the market. Read More

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Physiological homeostasis for ecological success of ( Pers.) populations in saline soils.

Physiol Mol Biol Plants 2021 Apr 24;27(4):687-701. Epub 2021 Mar 24.

Department of Botany, Government College University, Faisalabad, 38000 Pakistan.

The natural capacity of plants to endure salt stress is largely regulated by multifaceted structural and physio-biochemical modulations. Salt toxicity endurance mechanism of six ecotypes of sis Pers. was evaluated by analyzing photosynthesis, ionic homeostasis, and stomatal physiology under different levels of salinity (0, 100, 200 and 300 mM NaCl). Read More

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