#macrobenthic

[olive2travel]

Life of a #marinescientist... The grind. #scientistswhoselfie #marineecologist #macrobenthic #invertebratechick #invertebrates #nevergrowup #winniethepoohislife #poohbear #blackscientists #scientistsofcolor #womeninsteam #womeninstem #olive2travel (at University of New Haven) https://www.instagram.com/p/Btv2He6hOwH/?utm_source=ig_tumblr_share&igshid=1o5xnr16uuuj3

[evoldir]

Postdoc: Scandinavian.ResSchool.Biosystematics

Considering a postdoc in systematics, speciation or organismal evolution in Scandinavia? ForBio - the Scandinavian Research School in Biosystematics is organising a training program for outgoing and incoming postdoctoral fellows to apply for European Commission H2020 MSCA Individual Fellowships. The training program is open to potential incoming fellows to, and outgoing fellows from, research groups in systematic biology in Scandinavia, including systematics, taxonomy, phylogenetics, biogeography, macroevolution, metagenomics, etc. The target group are academically-engaged senior PhD students, postdocs and junior researchers. This covers the IF programs ER-ST (Standard European), ER-CAR (Career Restart Grant), ER-SE (Society and Enterprise), ER-RI (Reintegration), and GF (Global). We aim to have a mixed group of incoming and outgoing fellows. These programs are open to citizens of all countries. The program runs from June 1st to the submission deadline of the H2020 MSCA-IF call on September 11th 2019. The training includes match-making between fellows and hosts, coaching, an intensive 3-day workshop in Oslo, writing support, peer review, and liaison with EU coordination offices. For more information about teachers, target group, course plan, costs and registration, see: https://www.forbio.uio.no/events/courses/2019/MSCAIF.html For potential hosts for incoming fellows see below and here (https://www.forbio.uio.no/events/courses/2019/msca-if-hosts.html), but also consider any relevant host at the University of Oslo, NTNU Trondheim, University of Bergen, University of Tromsø, Gothenburg University, Uppsala University, Stockholm University, The Natural History Museum of Denmark, University of Copenhagen, Swedish Museum of Natural History, University of Aarhus, etc etc. SE (Society and Enterprise) fellowships can include mobility to research agencies, SMEs and NGOs. Registration: Interested fellows should register online and provide contact information of their host before May 10th. Registered fellows will be evaluated and notified by May 21st regarding acceptance and participation in the training program. Make sure the reserve the dates 12-14 June for the workshop. If you have any questions, contact Hugo de Boer (hugo.deboer@nhm.uio.no) for more information. Best, Hugo Hugo de Boer Natural History Museum University of Oslo P.O. Box 1172 Blindern 0318 Oslo, Norway Phone: +47 22851875 Plant.ID MSCA-ITN project leader Leader of ForBio - Research School in Biosystematics Plant Evolution and DNA Metabarcoding group Selected hosts that might be of interest: Inger Greve Alsos, Tromsø Museum, The Arctic University Museum of Norway, Tromsø PI of ERC CoG IceAGenT: IceAge Genomic Tracking of Refugia and Postglacial Dispersal PI of NFR Toppforsk ECOGEN: Ecosystem change and species persistence over time: a genome-based approach https://www.ecogen.no/ https://en.uit.no/forskning/forskningsgrupper/gruppe?p_document_id=605399 https://en.uit.no/om/enhet/ansatte/person?p_document_id=164266&p_dimension_id=268852 https://scholar.google.no/citations?user=phK0JuEAAAAJ&hl=no Torkild Bakken, NTNU University Museum, Norwegian University of Science and Technology. Biodiversity of marine macrobenthic organisms, coast-deep sea, Annelida, DNA barcoding, biogeography https://www.ntnu.edu/employees/torkild.bakken https://www.researchgate.net/profile/Torkild_Bakken Mika Bendiksby, NTNU University museum, Norwegian University of Science and Technology, Trondheim (also guest researcher at NHM, UiO) Biodiversity; biogeography (ecological- and historical-); biosystematics; speciation (allopolyploid-, cryptic- etc.); evolution (accelerated-, stagnant-, convergent- etc.); integrative taxonomy; lichenized fungi; phylogenetics (molecular- and spatial-) https://www.ntnu.edu/employees/mika.bendiksby https://www.nhm.uio.no/english/about/organization/research-collections/people/annamb/ https://scholar.google.no/citations?hl=en&user=e5TQ9AcAAAAJ Hugo de Boer, Plant Evolution and DNA metabarcoding, Natural History Museum, University of Oslo Plant systematics; Molecular identification; Trade, CITES, Genomic barcoding; Ethnobotany Project leader of H2020 MSCA-ITN-ETN Plant.ID on Molecular Identification of Plants. This project provides a lot of opportunities for plant identification related postdoctoral projects with large network of collaborators for international and intersectoral mobility as envisioned by the MSCA-IF program. https://www.plantid.uio.no/ Project leader of ForBio - Research School in Biosystematics. ForBio provides a great platform for networking and expert courses, and can also be used to gain teaching experience. https://www.forbio.uio.no/ https://www.nhm.uio.no/english/about/organization/research-collections/people/hugode/ https://scholar.google.se/citations?user=bJjOHT8AAAAJ&hl=en Nataliya Budaeva, Department of Natural History, University Museum of Bergen, University of Bergen, Norway Systematics and evolution of marine annelids, phylogenetics, morphology, biodiversity, deep sea Coordinator of ForBio - Research School in Biosystematics. https://www.uib.no/en/persons/Nataliya.Budaeva https://www.nataliyabudaeva.com/ https://scholar.google.com/citations?user=my3ndHwAAAAJ&hl=en Dimitar Dimitrov, Department of Natural History, University Museum of Bergen, University of Bergen, Norway Spider systematic; phylogenetics; macroevolution; macroecology and biogeography; biodiversity https://www.uib.no/en/persons/Dimitar.Dimitrov http://www.dimitardimitrov.name/ https://scholar.google.com/citations?user=mfemh8gAAAAJ Torbjørn Ekrem, Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway. Insect taxonomy, systematics and evolution; molecular systematics; DNA barcoding; metabarcoding https://www.ntnu.edu/employees/torbjorn.ekrem https://scholar.google.no/citations?user=qjFomJ4AAAAJ&hl=no https://www.researchgate.net/profile/Torbjorn_Ekrem http://www.norbol.org Vladimir Gusarov, Frontiers in Evolutionary Zoology, Natural History Museum, University of Oslo Systematic entomology; Molecular phylogenetics https://www.nhm.uio.no/english/about/organization/research-collections/people/vladig/ Galina Gusarova, Tromsø Museum, University of Tromsø, and CEES - Centre for Ecological and Evolutionary Synthesis, The Faculty of Mathematics and Natural Sciences, University of Oslo Plant systematics; DNA metabarcoding and metagenomics; Species delimitation; Euphrasia taxonomy https://www.mn.uio.no/cees/english/research/projects/257642/index.html https://scholar.google.no/citations?user=UGXI7o4AAAAJ&hl=en Kristian Hassel, Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway. Bbiodiversity and history of bryophytes at northern latitudes; (Meta)barcoding and macro fossil studies of lake sediments, current effects of climate change in the Arctic, as well as studies on species distributions (phylogeography and species distribution modelling) and speciation processes in Sphagnum. https://www.ntnu.edu/employees/kristian.hassel https://www.researchgate.net/profile/Kristian_Hassel https://scholar.google.com/citations?hl=en&user=28ljHRIAAAAJ Håvard Kauserud, Department of Biosciences, University of Oslo Molecular ecology of fungi in different habitats and ecosystems, combining evolutionary and ecological studies https://www.mn.uio.no/ibv/english/research/sections/evogene/groups/mycology/ https://www.mn.uio.no/ibv/english/people/aca/haavarka/ https://scholar.google.no/citations?user=q-ZfoDgAAAAJ&hl=en&oi=ao Anneleen Kool, Natural History Museum, University of Oslo Ethnobotany; Archaeobotany; Viking Age; Central Asia; Silk Road https://www.nhm.uio.no/english/about/organization/botanical-garden/people/anneleek/ https://www.nhm.uio.no/english/research/projects/people-and-plants/index.html https://www.mn.uio.no/cees/english/research/projects/143972/index.html Lee Hsiang Liow, Natural History Museum & Centre for Ecological and Evolutionary Synthesis (CEES), University of Oslo Paleobiology, macroevolution, bryozoology, statistical (paleo)ecology http://folk.uio.no/leehl/ https://scholar.google.no/citations?user=IdtcH6gAAAAJ&hl=en https://www.mn.uio.no/cees/english/people/researcher-postdoc/leehl/ Manuel Malaquias, Section of Taxonomy and Evolution, Department of Natural History, University Museum of Bergen Taxonomy, systematics, biogeography, phylogeny and speciation of marine molluscs from the Scandinavian region to the tropics across the entire marine realm from shallow to deep-sea environments. https://www.uib.no/en/persons/Manuel.Ant%C3%B3nio.E..Malaquias https://manuelmalaquias.wixsite.com/malaquias Michael Martin, Department of Natural History, NTNU University Museum, Trondheim Population genomics, palaeogenomics, phylogenomics, ancient DNA https://www.ntnu.no/ansatte/mike.martin https://scholar.google.no/citations?user=WosqmUMAAAAJ&hl=en Tommi Nyman, Norwegian Institute of Bioeconomy Research (NIBIO), Svanhovd, Norway Speciation; phylogenetics; macroevolution; population genetics; coevolution; conservation genetics; phylogeography of Hymenoptera (sawflies, parasitoids, wasps, bees, and ants) and parasitoid interactions (seal-parasite interactions, insect-parasitoid interactions, mushroom-insect-parasitoid networks. https://scholar.google.com/citations?user=7vHisVgAAAAJ&hl=en https://www.nibio.no/en/employees/tommi-nyman Bastiaan Star, Centre for Ecological and Evolutionary Synthesis, University of Oslo, Norway Ancient DNA, Bioinformatics, Archaeogenomics, Evolutionary Biology, Marine Biology. How past environmental changes and human impacts determine the evolution and distribution of organisms, with a specific interest in the marine environment. Hosting also two PhDs in H2020 MSCA-ITN-ETN SeaChanges. https://www.mn.uio.no/cees/english/people/researcher-postdoc/bastiaas/ https://www.mn.uio.no/cees/english/research/groups/archaeogenomics/index.html https://scholar.google.no/citations?user=Q0HX7bUAAAAJ&hl=en Hans K. Stenøien, Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology Molecular ecology, phylogeography, systematics and population genetics on mosses and humans. https://www.ntnu.edu/employees/hans.stenoien https://scholar.google.no/citations?user=1bZERzkAAAAJ&hl=no Torsten Hugo Struck, Frontiers in Evolutionary Zoology, Natural History Museum, University of Oslo Phylogenomics; Comparative Genomics; Bioinformatics; Annelida; Spiralia/Lophotrochozoa; Cryptic Speciation; Progenetic Evolution; Evolution of Complexity; Deep-level phylogeny http://www.annelida.de/ https://www.researchgate.net/profile/Torsten_Struck Hugo de Boer

[ijtsrd]

Species Diversity of Polychaete Worms from Some Selected Freshwater Environment of Thenkasi District, Tamil Nadu

by S. Balasubramanian | T. Citarasu | S. Lazarus | A. Renu ""Species Diversity of Polychaete Worms from Some Selected Freshwater Environment of Thenkasi District, Tamil Nadu""

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-5 , August 2019,

URL: https://www.ijtsrd.com/papers/ijtsrd26516.pdf  

Paper URL: https://www.ijtsrd.com/biological-science/zoology/26516/species-diversity-of-polychaete-worms-from-some-selected-freshwater-environment-of-thenkasi-district-tamil-nadu/s-balasubramanian

ugc approved science journal, languages journal, research papers

The number of freshwater species in the world is quite small when compared with the vast number of marine species. There are several marine forms which are penetrated brackish and freshwater but remain unable to breed there while others have adapted sufficiently to remain for their entire life span. Polychaetes are commonly found in Indian estuaries, among 152 species recorded, 119 species from the east coast, 10 species from both east and west coasts. A total of 8 species were identified along Thenkasi District. Macro benthic polychaetes highlighted the presence of indicator species at all stations. Most of the benthic studies explored that Nereididae is the dominant species. The polychaetes observed throughout this study were a similar size and this is a clear indication of extreme disturbance imposed on the sediment. The present findings show macrobenthic polychaete diversity rich all along the Thenkasi District of Tamil Nadu. 

[sciencespies]

Evolution after Chicxulub asteroid impact: Rapid response of life to end-cretaceous mass

https://sciencespies.com/nature/evolution-after-chicxulub-asteroid-impact-rapid-response-of-life-to-end-cretaceous-mass/

Evolution after Chicxulub asteroid impact: Rapid response of life to end-cretaceous mass

The impact event that formed the Chicxulub crater (Yucatán Peninsula, México) caused the extinction of 75% of species on Earth 66 million years ago, including non-avian dinosaurs. One place that did not experience much extinction was the deep, as organisms living in the abyss made it through the mass extinction event with just some changes to community structure.

New evidence from International Ocean Discovery Program (IODP) Expedition 364 of trace fossils of burrowing organisms that lived in the seafloor of the Chicxulub Crater beginning a few years after the impact shows just how quick the recovery of the seafloor ecosystem was, with the establishment of a well-developed tiered community within  approximately 700,000 years after the event.

In April and May 2016, a team of international scientists drilled into the Chicxulub impact crater. This joint expedition, organized by the International Ocean Discovery Program (IODP) and International Continental Scientific Drilling Program (ICDP) recovered an extended syn- and post-impact set of rock cores, allowing study of the effects of the impact on life and its recovery after the mass extinction event. The end Cretaceous (K-Pg) event has been profusely studied and its effect on biota are relatively well-known. However, the effect of these changes on the macrobenthic community, the community of organisms living on and in the seafloor that do not leave body fossils, is poorly known.

The investigators concluded that the diversity and abundance of trace fossils responded primarily to variations in the flux of organic matter (i.e., food) sinking to the seafloor during the early Paleocene. Local and regional-scale effects of the K-Pg impact included earthquakes of magnitude 10-11, causing continental and marine landslides, tsunamis hundreds of meters in height that swept more than 300 km onshore, shock waves and air blasts, and the ignition of wildfires. Global phenomena included acid rain, injection of aerosols, dust, and soot into the atmosphere, brief intense cooling followed by slight warming, and destruction of the stratospheric ozone layer, followed by a longer-term greenhouse effect.

Mass extinction events have punctuated the past 500 million years of Earth’s history, and studying them helps geoscientists understand how organisms respond to stress in their environment and how ecosystems recover from the loss of biodiversity. Although the K-Pg mass extinction was caused by an asteroid impact, previous ones were caused by slower processes, like massive volcanism, which caused ocean acidification and deoxygenation and had environmental effects that lasted millions of years.

By comparing the K-Pg record to earlier events like the end Permian mass extinction (the so-called “Great Dying” when 90% of life on Earth went extinct), geoscientists can determine how different environmental changes affect life. There are similar overall patterns of recovery after both events with distinct phases of stabilization and diversification, but with very different time frames. The initial recovery after the K-Pg, even at ground zero of the impact, lasted just a few years; this same phase lasted tens of thousands of years after the end Permian mass extinction. The overall recovery of seafloor burrowing organisms after the K-Pg took ~700,000 years, but it took several million years after the end Permian.

Story Source:

Materials provided by Geological Society of America. Note: Content may be edited for style and length.

#Nature

[400mcneillecologies]

Independent Study- EFFECTS OF CONSTRUCTION OF COASTAL STRUCTURE ON ECOSYSTEM

“Maintenance phase Some soft coastal defenses need to be provided. For instance, in beach nourishment, the beach requires to refill once in few years. The ecological impacts through the maintenance stage are analogous to the ones in the construction stage and are normally negative. Further soft coastal defense structures such as mudflat revive or salt bog creation is self-sustaining, thus no protection is required.”

“Expanded nourishment or the fill sedimentcan indirectly affect turbidity sensitive animals and plants. These impacts can be either positive or negative. Muddy water can help animals to be protected from visual predators; it can reduce the diffusion of light throughout the water and thus can decrease phytoplankton and benthic algal efficiency; it can prevent polychaetes and bivalves to feed and breathe; it can also deliberate the recovery pace of macrobenthic organisms. Moreover, grain size and the morphology of beaches can affect the composition and performance of the ecosystem”

This article explores how man-made interventions to costal areas affect the ecosystem, both hard and soft technics. The Oriental beach would be classified as Beach Nourishment which involves bringing in sand etc from another area to regenerate the beach since it isn't naturally occurring beach the maintenance of it is very important but Afshin discusses how this can be dangerous to the existing ecologies as the soil and minerals may not match what the ecosystem needs. Also the size and grain is very important to maintain ballance but because oriental is made to be the perfeect aestheic this could imapact the sourounding enviromnets  

Jahangirzadeh, Afshin, et al. EFFECTS OF CONSTRUCTION OF COASTAL STRUCTURE ON ECOSYSTEM. 2012, p. 12.

http://eprints.um.edu.my/14068/1/v65-136.pdf

[environmentguru]

Mutual dependence between sedimentary organic carbon and infaunal macrobenthos resolved by mechanistic modeling

Abstract The mutual dependence between sedimentary total organic carbon (TOC) and infaunal macrobenthos is here quantified by a mechanistic model. The model describes (i) the vertical distribution of infaunal macrobenthic biomass resulting from a tra https://www.environmentguru.com/pages/elements/element.aspx?utm_source=dlvr.it&utm_medium=tumblr&id=5481146

[chemicalworldnews]

Research on decoding the first deep-sea mussel genome

HONG KONG, CHINA: A joint research led by Hong Kong Baptist University (HKBU) and the Hong Kong University of Science and Technology (HKUST) has assembled the 1.64 gigabytes genome of a deep-sea mussel, which is roughly equivalent to 50 percent of the size of human genome. This is the first decoded genome among all deep-sea macrobenthic animals, revealing a complete set of DNA. The discovery gives wider insights into future research on the mechanisms of symbiosis in other marine organisms such as giant tubeworms and giant clams.

The research team, led by HKUST's chair professor of division of life science professor Pei-Yuan Qian and HKBU's associate professor of biology Dr Jian-Wen Qiu, have published the research findings in the journal Nature Ecology & Evolution.

The team used a specimen collected in 2013 during Dr Qiu's participation in China's manned submersible Jiaolong expedition in the South China Sea for research. Deep-sea organisms including mussels thrive in extreme environments of hydrothermal vents and cold seeps which are characterised by high hydrostatic pressure, lack of photosynthesis-derived food, variable temperatures and high concentrations of toxic substances. Despite their ability to survive under stressful conditions, a lack of genomic resources has hindered the understanding of their molecular mechanisms of adaptation.

The study sequenced the genome of the deep-sea mussel Bathymodiolus platifrons as well as its shallow-water relative Modiolus philippinarum collected from a local softshore in Tingkok for comparison of genomic features.

Through phylogenetic analysis, the research team discovered that modern deep-sea mussels are the descendants of shallow-water mussels, and their ancestors migrated to the deep sea approximately 110 million years ago. Providing evidence to support a hypothesis that their ancestors survived through an extinction event during the global anoxia period associated with the Palaeocene-Eocene Thermal Maximum which occurred around 57 million years ago.

Genome comparison revealed that the great expansion of several gene families in the deep-sea mussel may be related to its adaptation to the deep sea. For instance, the expansion of the "heat shock protein 70 family", a family of proteins that are produced by a cell in response to exposure to stressful conditions, may help the mussel stabilise protein structures. The expansion of the "ABC transporters family", the unit of the transport system, may enhance the mussel's ability to move toxic chemicals outside its gill epithelial cells.

The expansion of gene families related to immune recognition, endocytosis and caspase-mediated apoptosis indicates the mussel's adaptation to the presence of chemoautotrophic endosymbionts in its gills. An additional proteomic analysis of the deep-sea mussel gill reveals nutritional and energetic dependency of the mussel on its methanotrophic symbionts.

"The study has provided genomic resources for understanding how the deep-sea mussel has adapted to the abiotic stresses and lack of photosynthesis-derived food in the deep-sea chemosynthetic environment. The general mechanisms of symbiosis revealed in the study are of relevance to other symbiotic organisms such as deep-sea tubeworms and giant clams," said Qian.

"The genomic resources will facilitate various studies, including genetic connectivity among deep-sea populations, which is relevant to the establishment of deep-sea marine reserves," added Qian.

The study was supported by the Strategic Priority Research Program of Chinese Academy of Sciences of China, HKUST, HKBU, Scientific and Technical Innovation Council of Shenzhen, and Guangdong Natural Science Foundation.

Other main collaborators are HKUST post-doc fellows Dr Jin Sun and Dr Weipeng Zhang, Dr Jerome Hui of The Chinese University of Hong Kong and his team members Wenyan Nong and Fiona Ka Man Cheung, Dr Runsheng Li of Hong Kong Baptist University, Dr Yu Zhang of Shenzhen University, Dr Zhang Yang of The South China Sea Institute of Oceanography, and Christopher Fields of University of Illinois at Urbana-Champaign.

© HKBU News

[kangaske]

Research decoding the first deep-sea mussel genome published

A joint research led by Hong Kong Baptist University (HKBU) and the Hong Kong University of Science and Technology (HKUST) has assembled the 1.64 gigabytes genome of a deep-sea mussel, which is roughly equivalent to 50% of the size of human genome. This is the first decoded genome among all deep-sea macrobenthic animals, revealing a complete set of DNA. The discovery gives wider insights into future research on the mechanisms of symbiosis in other marine organisms such as giant tubeworms and giant clams. http://dlvr.it/PD1dy2