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https://www.readbyqxmd.com/read/29350826/dispersal-and-population-state-of-an-endangered-island-lizard-following-a-conservation-translocation
#1
Nicole F Angeli, Ian F Lundgren, Clayton G Pollock, Zandy M Hillis-Starr, Lee A Fitzgerald
Population size is widely used as a unit of ecological analysis, yet to estimate population size requires accounting for observed and latent heterogeneity influencing dispersion of individuals across landscapes. In newly established populations, such as when animals are translocated for conservation, dispersal and availability of resources influence patterns of abundance. We developed a process to estimate population size using N-mixture models and spatial models for newly established and dispersing populations...
January 19, 2018: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/29342148/a-strong-summer-phytoplankton-bloom-southeast-of-vietnam-in-2007-a-transitional-year-from-el-ni%C3%A3-o-to-la-ni%C3%A3-a
#2
Hui Zhao, Jian Zhao, Xingli Sun, Fajin Chen, Guoqi Han
Summer upwelling occurs frequently off the southeast Vietnam coast in the western South China Sea (SCS), where summer phytoplankton blooms generally appear during June-August. In this study, we investigate inter-annual variation of Ekman pumping and offshore transport, and its modulation on summer blooms southeast of Vietnam. The results indicate that there are low intensities of summer blooms in El Niño years, under higher sea surface temperatures (SST) and weaker winds. However, a different pattern of monthly chlorophyll a (Chl-a) blooms occurred in summer of 2007, a transitional stage from El Niño to La Niña, with weak (strong) wind and high (low) SST before (after) early July...
2018: PloS One
https://www.readbyqxmd.com/read/29339335/potential-impacts-of-offshore-oil-spills-on-polar-bears-in-the-chukchi-sea
#3
Ryan R Wilson, Craig Perham, Deborah P French-McCay, Richard Balouskus
Sea ice decline is anticipated to increase human access to the Arctic Ocean allowing for offshore oil and gas development in once inaccessible areas. Given the potential negative consequences of an oil spill on marine wildlife populations in the Arctic, it is important to understand the magnitude of impact a large spill could have on wildlife to inform response planning efforts. In this study we simulated oil spills that released 25,000 barrels of oil for 30 days in autumn originating from two sites in the Chukchi Sea (one in Russia and one in the U...
January 12, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29333358/investigating-the-seasonal-and-diurnal-cycles-of-ocean-vector-winds-near-the-philippines-using-rapidscat-and-ccmp
#4
Timothy J Lang
The seasonal and diurnal cycles of ocean vector winds in the domain of the South China Sea are characterized and compared using RapidScat and the Cross-Calibrated Multi-Platform (CCMP) data sets. Broad agreement in seasonal flow patterns exists between these data sets during the year 2015. Both observe the dramatic reversal from wintertime trade winds (November-April) to westerly flow associated with the summer monsoon (May-October). These seasonal changes have strong but not equivalent effects on mean wind divergence patterns in both data sets...
September 27, 2017: Journal of Geophysical Research. Atmospheres: JGR
https://www.readbyqxmd.com/read/29322109/influence-of-hydrodynamic-features-in-the-transport-and-fate-of-hazard-contaminants-within-touristic-ports-case-study-torre-a-mare-italy
#5
Matilda Mali, Daniela Malcangio, Maria Michela Dell' Anna, Leonardo Damiani, Piero Mastrorilli
The environmental quality of Torre a Mare port (Italy) was assessed evaluating on one side, the chemical concentration of nine metals and metalloids within bottom sediments and on the other one, by exploring the impact of hydrodynamic conditions in contaminant's transport within the most polluted basins. The investigated port was selected as case study because it resulted much more polluted than it was expected based on the touristic port activities and related stressors loading on it. In order to determine the origin and fate of contaminants in the port basin, 2D numerical simulations were carried out by MIKE21 software...
January 2018: Heliyon
https://www.readbyqxmd.com/read/29315312/taking-the-metabolic-pulse-of-the-world-s-coral-reefs
#6
Tyler Cyronak, Andreas J Andersson, Chris Langdon, Rebecca Albright, Nicholas R Bates, Ken Caldeira, Renee Carlton, Jorge E Corredor, Rob B Dunbar, Ian Enochs, Jonathan Erez, Bradley D Eyre, Jean-Pierre Gattuso, Dwight Gledhill, Hajime Kayanne, David I Kline, David A Koweek, Coulson Lantz, Boaz Lazar, Derek Manzello, Ashly McMahon, Melissa Meléndez, Heather N Page, Isaac R Santos, Kai G Schulz, Emily Shaw, Jacob Silverman, Atsushi Suzuki, Lida Teneva, Atsushi Watanabe, Shoji Yamamoto
Worldwide, coral reef ecosystems are experiencing increasing pressure from a variety of anthropogenic perturbations including ocean warming and acidification, increased sedimentation, eutrophication, and overfishing, which could shift reefs to a condition of net calcium carbonate (CaCO3) dissolution and erosion. Herein, we determine the net calcification potential and the relative balance of net organic carbon metabolism (net community production; NCP) and net inorganic carbon metabolism (net community calcification; NCC) within 23 coral reef locations across the globe...
2018: PloS One
https://www.readbyqxmd.com/read/29310588/insights-into-teleost-sex-determination-from-the-seriola-dorsalis-genome-assembly
#7
Catherine M Purcell, Arun S Seetharam, Owyn Snodgrass, Sofia Ortega-García, John R Hyde, Andrew J Severin
BACKGROUND: The assembly and annotation of a genome is a valuable resource for a species, with applications ranging from conservation genomics to gene discovery. Genomic resource development is especially important for species in culture, such as the California Yellowtail (Seriola dorsalis), the likely candidate for the establishment of commercial offshore aquaculture production in southern California. Genomic resource development for this species will improve the understanding of sex and other phenotypic traits, and allow for rapid increases in genetic improvement for and economic gain in culture production...
January 8, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29306169/water-exclosure-treatment-system-wets-an-innovative-device-for-minimizing-beach-closures
#8
John R Reimer, Chin H Wu, Kirsti K Sorsa
A Water Exclosure Treatment System (WETS) is developed and installed to minimize the occurrence of beach closures due to algae and Escherchia coli (E. coli) in an inland lake. WETS consists of an "exclosure" sub-system with a five-sided polypropylene, barrier that excludes offshore lake contaminated water from the swimming area. Inside the exclosure, water is pumped to a portable filtration-ultraviolet treatment sub-system with three components. First, heavy debris like aquatic plants are removed through a strainer...
January 3, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29303162/3-5-ghz-environmental-sensing-capability-detection-thresholds-and-deployment
#9
Thao T Nguyen, Michael R Souryal, Anirudha Sahoo, Timothy A Hall
Spectrum sharing in the 3.5 GHz band between commercial and government users along U.S. coastal areas depends on an environmental sensing capability (ESC)-that is, a network of radio frequency sensors and a decision system-to detect the presence of incumbent shipborne radar systems and trigger protective measures, as needed. It is well known that the sensitivity of these sensors depends on the aggregate interference generated by commercial systems to the incumbent radar receivers, but to date no comprehensive study has been made of the aggregate interference in realistic scenarios and its impact on the requirement for detection of the radar signal...
September 2017: IEEE Trans Cogn Commun Netw
https://www.readbyqxmd.com/read/29299300/an-integrative-mating-system-assessment-of-a-nonmodel-economically-important-pacific-rockfish-sebastes-melanops-reveals-nonterritorial-polygamy-and-conservation-implications-for-a-large-species-flock
#10
Kurt W Karageorge, Raymond R Wilson
Characterizing the mating systems of long-lived, economically important Pacific rockfishes comprising the viviparous Sebastes species flock is crucial for their conservation. However, direct assignment of mating success to sires is precluded by open, offshore populations and high female fecundity. We addressed this challenge by integrating paternity-assigned mating success of females with the adult sex ratio (ASR) of the population, male evolutionary responses to receptive females, and reproductive life history traits-in the framework of sexual selection theory-to assess the mating system of Sebastes melanops...
December 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29298307/persistent-differences-between-coastal-and-offshore-kelp-forest-communities-in-a-warming-gulf-of-maine
#11
Jon D Witman, Robert W Lamb
Kelp forests provide important ecosystem services, yet coastal kelp communities are increasingly altered by anthropogenic impacts. Kelp forests in remote, offshore locations may provide an informative contrast due to reduced impacts from local stressors. We tested the hypothesis that shallow kelp assemblages (12-15 m depth) and associated fish and benthic communities in the coastal southwest Gulf of Maine (GOM) differed significantly from sites on Cashes Ledge, 145 km offshore by sampling five coastal and three offshore sites at 43...
2018: PloS One
https://www.readbyqxmd.com/read/29289544/phylogenetics-and-geography-of-speciation-in-new-world-halichoeres-wrasses
#12
Peter C Wainwright, Francesco Santini, David R Bellwood, D Ross Robertson, Luiz A Rocha, Michael E Alfaro
The New World Halichoeres comprises about 30 small to medium sized wrasse species that are prominent members of reef communities throughout the tropical Western Atlantic and Eastern Pacific. We conducted a phylogenetic analysis of this group and related lineages using new and previously published sequence data. We estimated divergence times, evaluated the monophyly of this group, their relationship to other labrids, as well as the time-course and geography of speciation. These analyses show that all members of New World Halichoeres form a monophyletic group that includes Oxyjulis and Sagittalarva...
December 28, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/29277452/a-three-year-study-of-metal-levels-in-skin-biopsies-of-whales-in-the-gulf-of-mexico-after-the-deepwater-horizon-oil-crisis
#13
John Pierce Wise, James T F Wise, Catherine F Wise, Sandra S Wise, Christy Gianios, Hong Xie, Ron Walter, Mikki Boswell, Cairong Zhu, Tongzhang Zheng, Christopher Perkins, John Pierce Wise
In response to the explosion of the Deepwater Horizon and the massive release of oil that followed, we conducted three annual research voyages to investigate how the oil spill would impact the marine offshore environment. Most investigations into the ecological and toxicological impacts of the Deepwater Horizon Oil crisis have mainly focused on the fate of the oil and dispersants, but few have considered the release of metals into the environment. From studies of previous oil spills, other marine oil industries, and analyses of oil compositions, it is evident that metals are frequently encountered...
December 19, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/29261672/habitat-risk-assessment-for-regional-ocean-planning-in-the-u-s-northeast-and-mid-atlantic
#14
Katherine H Wyatt, Robert Griffin, Anne D Guerry, Mary Ruckelshaus, Michael Fogarty, Katie K Arkema
Coastal habitats provide important benefits to people, including habitat for species targeted by fisheries and opportunities for tourism and recreation. Yet, such human activities also can imperil these habitats and undermine the ecosystem services they provide to people. Cumulative risk assessment provides an analytical framework for synthesizing the influence of multiple stressors across habitats and decision-support for balancing human uses and ecosystem health. To explore cumulative risk to habitats in the U...
2017: PloS One
https://www.readbyqxmd.com/read/29259587/niche-partitioning-of-the-n-cycling-microbial-community-of-an-offshore-oxygen-deficient-zone
#15
Clara A Fuchsman, Allan H Devol, Jaclyn K Saunders, Cedar McKay, Gabrielle Rocap
Microbial communities in marine oxygen deficient zones (ODZs) are responsible for up to half of marine N loss through conversion of nutrients to N2O and N2. This N loss is accomplished by a consortium of diverse microbes, many of which remain uncultured. Here, we characterize genes for all steps in the anoxic N cycle in metagenomes from the water column and >30 μm particles from the Eastern Tropical North Pacific (ETNP) ODZ. We use an approach that allows for both phylogenetic identification and semi-quantitative assessment of gene abundances from individual organisms, and place these results in context of chemical measurements and rate data from the same location...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29250036/distribution-of-abundant-and-active-planktonic-ciliates-in-coastal-and-slope-waters-off-new-england
#16
Sarah J Tucker, George B McManus, Laura A Katz, Jean-David Grattepanche
Despite their important role of linking microbial and classic marine food webs, data on biogeographical patterns of microbial eukaryotic grazers are limited, and even fewer studies have used molecular tools to assess active (i.e., those expressing genes) community members. Marine ciliate diversity is believed to be greatest at the chlorophyll maximum, where there is an abundance of autotrophic prey, and is often assumed to decline with depth. Here, we assess the abundant (DNA) and active (RNA) marine ciliate communities throughout the water column at two stations off the New England coast (Northwest Atlantic)-a coastal station 43 km from shore (40 m depth) and a slope station 135 km off shore (1,000 m)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29245696/new-records-of-i-solenocera-barunajaya-i-crosnier-1994-and-i-solenocera-i-i-rathbuni-i-ramadan-1938-crustacea-decapoda-penaeoidea-from-the-southwest-coast-of-india
#17
P Purushothaman, Rekha Devi Chakraborty, G Maheswarudu, G Kuberan
The genus Solenocera Lucas, 1849 consist of 43 species, most with commercial importance and occurring in offshore, deeper waters (Pérez Farfante & Kensley 1997; De Grave & Fransen 2011). Twelve species in the genus Solenocera were reported from India, with a few contributing to the regular fishery (S. crassicornis, S. choprai, and S. hextii), and others seldom captured (S.alfonso, S.alticarinata, S.annectens, S.halli, S.koelbeli, S.melantho, S.pectinata, S.pectinulata and S.waltairensis). Members of the Solenoceridae are identified based on the key taxonomic characters of the genitalia and the cephalothorax...
October 31, 2017: Zootaxa
https://www.readbyqxmd.com/read/29242470/gastropods-from-the-late-jurassic-early-cretaceous-seep-deposits-in-spitsbergen-svalbard
#18
Andrzej Kaim, Krzysztof Hryniewicz, Crispin T S Little, Hans Arne Nakrem
Eleven gastropod species from seven latest Jurassic-earliest Cretaceous hydrocarbon seep deposits from central Spitsbergen, Svalbard are described and illustrated. Six new species and one new genus are introduced. Sassenfjordia gen. nov. is tentatively classified as a naticoid and is characterized by a naticiform gross teleoconch morphology and a large protoconch ornamented with spiral ribs, similar to those present in the subfamily Sininae. The patellogastropod ?Pectinodonta borealis sp. nov. represents the oldest occurrence of pectinodontid limpets in chemosynthesis-based associations...
October 6, 2017: Zootaxa
https://www.readbyqxmd.com/read/29234456/-it-s-still-a-great-adventure-exploring-offshore-employees-working-conditions-in-a-qualitative-study
#19
Janika Mette, Marcial Velasco Garrido, Volker Harth, Alexandra M Preisser, Stefanie Mache
Background: Despite the particular demands inherent to offshore work, little is known about the working conditions of employees in the German offshore wind industry. To date, neither offshore employees' job demands and resources, nor their needs for improving the working conditions have been explored. Therefore, the aim of this study was to conduct a qualitative analysis to gain further insight into these topics. Methods: Forty-two semi-structured telephone interviews with German offshore employees (n = 21) and offshore experts (n = 21) were conducted...
2017: Journal of Occupational Medicine and Toxicology
https://www.readbyqxmd.com/read/29229801/prediction-of-the-free-surface-elevation-for-rotational-water-waves-using-the-recovery-of-pressure-at-the-bed
#20
D Henry, G P Thomas
This paper considers the pressure-streamfunction relationship for a train of regular water waves propagating on a steady current, which may possess an arbitrary distribution of vorticity, in two dimensions. The application of such work is to both near shore and offshore environments, and in particular, for linear waves we provide a description of the role which the pressure function on the seabed plays in determining the free-surface profile elevation. Our approach is shown to provide a good approximation for a range of current conditions...
January 28, 2018: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
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