keyword
MENU ▼
Read by QxMD icon Read
search

Marine Ecology

keyword
https://www.readbyqxmd.com/read/28221832/what-explains-patterns-of-diversification-and-richness-among-animal-phyla
#1
Tereza Jezkova, John J Wiens
Animal phyla vary dramatically in species richness (from one species to >1.2 million), but the causes of this variation remain largely unknown. Animals have also evolved striking variation in morphology and ecology, including sessile marine taxa lacking heads, eyes, limbs, and complex organs (e.g., sponges), parasitic worms (e.g., nematodes, platyhelminths), and taxa with eyes, skeletons, limbs, and complex organs that dominate terrestrial ecosystems (arthropods, chordates). Relating this remarkable variation in traits to the diversification and richness of animal phyla is a fundamental yet unresolved problem in biology...
March 2017: American Naturalist
https://www.readbyqxmd.com/read/28217892/animal-pee-in-the-sea-consumer-mediated-nutrient-dynamics-in-the-world-s-changing-oceans
#2
REVIEW
Jacob E Allgeier, Deron E Burkepile, Craig A Layman
Humans have drastically altered the abundance of animals in marine ecosystems via exploitation. Reduced abundance can destabilize food webs, leading to cascading indirect effects that dramatically reorganize community structure and shift ecosystem function. However, the additional implications of these top-down changes for biogeochemical cycles via consumer-mediated nutrient dynamics (CND) are often overlooked in marine systems, particularly in coastal areas. Here, we review research that underscores the importance of this bottom-up control at local, regional, and global scales in coastal marine ecosystems, and the potential implications of anthropogenic change to fundamentally alter these processes...
February 20, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28217773/finding-food-how-marine-invertebrates-use-chemical-cues-to-track-and-select-food
#3
REVIEW
Michiya Kamio, Charles D Derby
Benthic marine invertebrates sense molecules from other organisms and use these molecules to find and evaluate the organisms as sources of food. These processes depend on the detection and discrimination of molecules carried in sea water around and in the mouths of these animals. To understand these processes, researchers have studied how molecules released from food distribute in the sea water as a plume, how animals respond to the plume, the molecular identity of the attractants in the plume, the effect of turbulence on food-searching success, and how animals evaluate the quality of food and make decisions to eat or not...
February 20, 2017: Natural Product Reports
https://www.readbyqxmd.com/read/28217745/the-baltic-sea-virome-diversity-and-transcriptional-activity-of-dna-and-rna-viruses
#4
Lisa Zeigler Allen, John P McCrow, Karolina Ininbergs, Christopher L Dupont, Jonathan H Badger, Jeffery M Hoffman, Martin Ekman, Andrew E Allen, Birgitta Bergman, J Craig Venter
Metagenomic and metatranscriptomic data were generated from size-fractionated samples from 11 sites within the Baltic Sea and adjacent marine waters of Kattegat and freshwater Lake Torneträsk in order to investigate the diversity, distribution, and transcriptional activity of virioplankton. Such a transect, spanning a salinity gradient from freshwater to the open sea, facilitated a broad genome-enabled investigation of natural as well as impacted aspects of Baltic Sea viral communities. Taxonomic signatures representative of phages within the widely distributed order Caudovirales were identified with enrichments in lesser-known families such as Podoviridae and Siphoviridae...
January 2017: MSystems
https://www.readbyqxmd.com/read/28216029/ecophysiological-responses-of-juvenile-seabass-dicentrarchus-labrax-exposed-to-increased-temperature-and-dietary-methylmercury
#5
Ana Luísa Maulvault, Vera Barbosa, Ricardo Alves, Ana Custódio, Patrícia Anacleto, Tiago Repolho, Pedro Pousão Ferreira, Rui Rosa, António Marques, Mário Diniz
The ecotoxicological effects of methylmercury (MeHg) exposure have been intensively described in literature. Yet, it is still unclear how marine biota will respond to the presence of MeHg under climate change, namely ocean warming. The present study aimed to investigate, for the first time, fish condition [Fulton's K index (K), hepatosomatic index (HIS) and brain-to-body mass ratio (BB-ratio)] and several stress-related responses in an ecologically and commercially important fish species (Dicentrachus labrax) exposed for 28days to dietary MeHg (8...
February 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28215555/intertidal-pool-fish-girella-laevifrons-kyphosidae-shown-strong-physiological-homeostasis-but-shy-personality-the-cost-of-living-in-hypercapnic-habitats
#6
S Benítez, C Duarte, T Opitz, N A Lagos, J M Pulgar, C A Vargas, M A Lardies
Tide pools habitats are naturally exposed to a high degree of environmental variability. The consequences of living in these extreme habitats are not well established. In particular, little it is known about of the effects of hypercanic seawater (i.e. high pCO2 levels) on marine vertebrates such as intertidal pool fish. The aim of this study was to evaluate the effects of increased pCO2 on the physiology and behavior in juveniles of the intertidal pool fish Girella laevifrons. Two nominal pCO2 concentrations (400 and 1600μatm) were used...
February 16, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28215554/diversity-of-bacteria-and-fungi-associated-with-tarballs-recent-developments-and-future-prospects
#7
REVIEW
Varsha Laxman Shinde, V Suneel, Belle Damodara Shenoy
Tarballs are formed by weathering of crude oil in marine environment. They are transported from open ocean to the shores by sea currents and waves. Tarball pollution is a major concern to global marine ecosystem. Microbes such as bacteria and fungi are known to be associated with tarballs. They presumably play an important role in tarball degradation and some are potential human and animal pathogens. This paper highlights the recent studies on tarball-associated bacteria and fungi. Future perspectives on diversity, ecology and possible applications of tarball-associated microbes in bioremediation of beached tarballs have been discussed...
February 16, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28215329/biotechnological-applications-of-marine-enzymes-from-algae-bacteria-fungi-and-sponges
#8
S Parte, V L Sirisha, J S D'Souza
Diversity is the hallmark of all life forms that inhabit the soil, air, water, and land. All these habitats pose their unique inherent challenges so as to breed the "fittest" creatures. Similarly, the biodiversity from the marine ecosystem has evolved unique properties due to challenging environment. These challenges include permafrost regions to hydrothermal vents, oceanic trenches to abyssal plains, fluctuating saline conditions, pH, temperature, light, atmospheric pressure, and the availability of nutrients...
2017: Advances in Food and Nutrition Research
https://www.readbyqxmd.com/read/28214009/trophic-magnification-of-dechlorane-plus-in-the-marine-food-webs-of-fildes-peninsula-in-antarctica
#9
Guangshui Na, Yao Yao, Hui Gao, Ruijing Li, Linke Ge, Ivan A Titaley, Lisandra Santiago-Delgado, Staci L Massey Simonich
The food web composition, assimilation efficiency of Dechlorane Plus (DP) in food web components, and even extrinsic conditions can affect the trophic biomagnification potentials of DP isomers in food webs. Antarctica ecological system is characterized by the presence of few consumers and simple trophic levels (TLs), which are crucial in discussing the behavior of contaminants. To assess the biomagnification potential of DP in the Antarctic food web, nine representative species were sampled and analyzed from the Fildes Peninsula...
February 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28212462/climate-change-contaminant-interactions-in-marine-food-webs-towards-a-conceptual-framework
#10
Juan José Alava, William W L Cheung, Peter S Ross, Rashid U Sumaila
Climate change is reshaping the way in which contaminants move through the global environment, in large part by changing the chemistry of the oceans and affecting the physiology, health and feeding ecology of marine biota. Climate change-associated impacts on structure and function of marine food webs, with consequent changes in contaminant transport, fate and effects, is likely to have significant repercussions to those human populations that rely on fisheries resources for food, recreation or culture. Published studies on climate change-contaminant interactions with a focus on food web bioaccumulation were systematically reviewed to explore how climate change and ocean acidification may impact contaminant levels in marine food webs...
February 17, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28211249/improving-the-interpretability-of-climate-landscape-metrics-an-ecological-risk-analysis-of-japan-s-marine-protected-areas
#11
Jorge García Molinos, Shintaro Takao, Naoki H Kumagai, Elvira S Poloczanska, Michael T Burrows, Masahiko Fujii, Hiroya Yamano
Conservation efforts strive to protect significant swaths of terrestrial, freshwater and marine ecosystems from a range of threats. As climate change becomes an increasing concern, these efforts must take into account how resilient protected spaces will be in the face of future drivers of change such as warming temperatures. Climate landscape metrics, which signal the spatial magnitude and direction of climate change, support a convenient initial assessment of potential threats to and opportunities within ecosystems to inform conservation and policy efforts where biological data are not available...
February 17, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28209775/evidence-for-environmental-and-ecological-selection-in-a-microbe-with-no-geographic-limits-to-gene-flow
#12
Kerry A Whittaker, Tatiana A Rynearson
The ability for organisms to disperse throughout their environment is thought to strongly influence population structure and thus evolution of diversity within species. A decades-long debate surrounds processes that generate and support high microbial diversity, particularly in the ocean. The debate concerns whether diversification occurs primarily through geographic partitioning (where distance limits gene flow) or through environmental selection, and remains unresolved due to lack of empirical data. Here we show that gene flow in a diatom, an ecologically important eukaryotic microbe, is not limited by global-scale geographic distance...
February 16, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28208796/recent%C3%A2-trends%C3%A2-in%C3%A2-marine%C3%A2-phycotoxins%C3%A2-from%C3%A2-australian%C3%A2-coastal%C3%A2-waters
#13
Penelope Ajani, D Tim Harwood, Shauna A Murray
Phycotoxins, which are produced by harmful microalgae and bioaccumulate in the  marine food web, are of growing concern for Australia. These harmful algae pose a threat to  ecosystem and human health, as well as constraining the progress of aquaculture, one of the fastest  growing food sectors in the world. With better monitoring, advanced analytical skills and an  increase in microalgal expertise, many phycotoxins have been identified in Australian coastal  waters in recent years...
February 9, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28207804/spatio-temporal-dynamics-of-a-fish-predator-density-dependent-and-hydrographic-effects-on-baltic-sea-cod-population
#14
Valerio Bartolino, Huidong Tian, Ulf Bergström, Pekka Jounela, Eero Aro, Christian Dieterich, H E Markus Meier, Massimiliano Cardinale, Barbara Bland, Michele Casini
Understanding the mechanisms of spatial population dynamics is crucial for the successful management of exploited species and ecosystems. However, the underlying mechanisms of spatial distribution are generally complex due to the concurrent forcing of both density-dependent species interactions and density-independent environmental factors. Despite the high economic value and central ecological importance of cod in the Baltic Sea, the drivers of its spatio-temporal population dynamics have not been analytically investigated so far...
2017: PloS One
https://www.readbyqxmd.com/read/28205416/ecological-implications-of-hypoxia-triggered-shifts-in-secondary-metabolism
#15
Kelley A Gallagher, Greg Wanger, Jane Henderson, Mark Llorente, Chambers C Hughes, Paul R Jensen
Members of the actinomycete genus Streptomyces are non-motile, filamentous bacteria that are well known for the production of biomedically relevant secondary metabolites. While considered obligate aerobes, little is known about how these bacteria respond to periods of reduced oxygen availability in their natural habitats, which include soils and ocean sediments. Here we provide evidence that the marine streptomycete strain CNQ-525 can reduce MnO2 via a diffusible mechanism. We investigated the effects of hypoxia on secondary metabolite production and observed a shift away from the antibiotic napyradiomycin towards 8-amino-flaviolin, an intermediate in the napyradiomycin biosynthetic pathway...
February 15, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28202274/marine-debris-in-five-national-parks-in-alaska
#16
L Polasek, J Bering, H Kim, P Neitlich, B Pister, M Terwilliger, K Nicolato, C Turner, T Jones
Marine debris is a management issue with ecological and recreational impacts for agencies, especially on remote beaches not accessible by road. This project was implemented to remove and document marine debris from five coastal National Park Service units in Alaska. Approximately 80km of coastline were cleaned with over 10,000kg of debris collected. Marine debris was found at all 28 beaches surveyed. Hard plastics were found on every beach and foam was found at every beach except one. Rope/netting was the next most commonly found category, present at 23 beaches...
February 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28202240/fatty-acid-profile-of-the-sea-snail-gibbula-umbilicalis-as-a-biomarker-for-coastal-metal-pollution
#17
Carla O Silva, Tiago Simões, Sara C Novais, Inês Pimparel, Luana Granada, Amadeu M V M Soares, Carlos Barata, Marco F L Lemos
Metals are among the most common environmental pollutants with natural or anthropogenic origin that can be easily transferred through the food chain. Marine gastropods are known to accumulate high concentrations of these metals in their tissues. Gibbula umbilicalis ecological importance and abundant soft tissues, which enables extent biochemical assessments, makes this particular organism a potentially suitable species for marine ecotoxicological studies. Fatty acids are carbon-rich compounds that are ubiquitous in all organisms and easy to metabolize...
February 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28199341/methods-for-calculating-protection-equality-for-conservation-planning
#18
Alienor L M Chauvenet, Caitlin D Kuempel, Jennifer McGowan, Maria Beger, Hugh P Possingham
Protected Areas (PAs) are a central part of biodiversity conservation strategies around the world. Today, PAs cover c15% of the Earth's land mass and c3% of the global oceans. These numbers are expected to grow rapidly to meet the Convention on Biological Diversity's Aichi Biodiversity target 11, which aims to see 17% and 10% of terrestrial and marine biomes protected, respectively, by 2020. This target also requires countries to ensure that PAs protect an "ecologically representative" sample of their biodiversity...
2017: PloS One
https://www.readbyqxmd.com/read/28198382/re-shifting-the-ecological-baseline-for-the-overexploited-mediterranean-red-coral
#19
J Garrabou, E Sala, C Linares, J B Ledoux, I Montero-Serra, J M Dominici, S Kipson, N Teixidó, E Cebrian, D K Kersting, J G Harmelin
Overexploitation leads to the ecological extinction of many oceanic species. The depletion of historical abundances of large animals, such as whales and sea turtles, is well known. However, the magnitude of the historical overfishing of exploited invertebrates is unclear. The lack of rigorous baseline data limits the implementation of efficient management and conservation plans in the marine realm. The precious Mediterranean red coral Corallium rubrum has been intensively exploited since antiquity for its use in jewellery...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28196756/amberstripe-scad-decapterus-muroadsi-carangidae-fish-ingest-blue-microplastics-resembling-their-copepod-prey-along-the-coast-of-rapa-nui-easter-island-in-the-south-pacific-subtropical-gyre
#20
Nicolas Christian Ory, Paula Sobral, Joana Lia Ferreira, Martin Thiel
An increasing number of studies have described the presence of microplastics (≤5mm) in many different fish species, raising ecological concerns. The factors influencing the ingestion of microplastics by fish remain unclear despite their importance to a better understanding of the routes of microplastics through marine food webs. Here, we compare microplastics and planktonic organisms in surface waters and as food items of 20 Amberstripe scads (Decapterus muroadsi) captured along the coast of Rapa Nui (Easter Island) to assess the hypothesis that fish ingest microplastics resembling their natural prey...
February 10, 2017: Science of the Total Environment
keyword
keyword
8293
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"