U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Subject beaches Remove constraint Subject: beaches
Start Over

Search

287  Search Results

« Previous | 1 - 20 of 287 |
Number of results to display per page

Search Results

1. 3D mapping efficacy of a drone and terrestrial laser scanner over a temperate beach-dune zone

Author:
Emilia Guisado-Pintado; Derek W.T. Jackson; David Rogers
Source:
Geomorphology 2019 v.328 pp. 157-172
ISSN:
0169-555X
Subject:
analytical methods; beaches; data quality; digital elevation models; landscapes; lasers; scanners; space and time; spatial data; surveys; topography; unmanned aerial vehicles; vegetation cover; Ireland
Abstract:
... Understanding dynamic earth surface processes requires various spatial and temporal information to help produce patterns of landform change. Recent developments in sensor technology such as Structure from Motion (SfM), camera-mounted airborne Unmanned Aerial Vehicles (UAVs) and Terrestrial Laser Scanning (TLS) have provided a means of acquiring high-resolution spatial data on land surface topograp ...
DOI:
10.1016/j.geomorph.2018.12.013

2. Ulva lactuca, A Source of Troubles and Potential Riches

Author:
Herminia Dominguez; Erwann P. Loret
Source:
Marine drugs 2019 v.17 no.6 pp. -
ISSN:
1660-3397
Subject:
Ulva lactuca; algae; algal blooms; bacteria; beaches; bioactive compounds; biofuels; biomass; genetic analysis; lettuce; phenotype; spring; symbiosis; vapors; water salinity
Abstract:
... Ulva lactuca is a green macro alga involved in devastating green tides observed worldwide. These green tides or blooms are a consequence of human activities. Ulva blooms occur mainly in shallow waters and the decomposition of this alga can produce dangerous vapors. Ulva lactuca is a species usually resembling lettuce, but genetic analyses demonstrated that other green algae with tubular phenotypes ...
DOI:
10.3390/md17060357
PubMed:
31207947
PubMed Central:
PMC6627311

3. Abundance, characteristics and surface degradation features of microplastics in beach sediments of five coastal areas in Tamil Nadu, India

Author:
Narmatha Sathish; K. Immaculate Jeyasanta; Jamila Patterson
Source:
Marine pollution bulletin 2019 v.142 pp. 112-118
ISSN:
0025-326X
Subject:
beaches; coasts; energy-dispersive X-ray analysis; management systems; microplastics; nylon; polyesters; polyethylene; polypropylenes; polystyrenes; recreation; scanning electron microscopy; sediments; waste management; water pollution; India
Abstract:
... This study undertook to investigate the occurrence of microplastics (MPs) in the high and low-tide sediments of five coastal areas in Tamil Nadu, India. The abundance of microplastics vary from 439 ± 172 to 119 ± 72 (HTL) and 179 ± 68 to 33 ± 30 (LTL) items kg⁻¹ of sediments. The MP polymers found in the study sites are Polyethylene (73.2%), polypropylene (13.8%), nylon (8.2%), polystyrene (2.8%) ...
DOI:
10.1016/j.marpolbul.2019.03.037

4. Abundance, morphology and chemical composition of microplastics in sand and sediments from a protected coastal area: The Mar Menor lagoon (SE Spain)

Author:
Javier Bayo; Dolores Rojo; Sonia Olmos
Source:
Environmental pollution 2019 v.252 pp. 1357-1366
ISSN:
0269-7491
Subject:
beaches; chemical composition; coastal water; coasts; color; conservation areas; education programs; environmental policy; fisheries; littoral zone; manufacturing; microplastics; plastic greenhouses; pollution; polyethylene; resins; sand; sludge; tourism; tourists; wastewater treatment; winter; Spain
Abstract:
... This paper presents the abundance and ubiquitous presence of microplastics in a protected coastal zone located in the southeast of Spain: The Mar Menor lagoon, an important tourist destination in this region. Seventeen sampling sites, corresponding to both intertidal and backshore points, were collected during winter 2017 and 2018, being situated in different protected areas according to internati ...
DOI:
10.1016/j.envpol.2019.06.024

5. Accumulation and characteristics of plastic debris along five beaches in Cape Town

Author:
Takunda Y. Chitaka; Harro von Blottnitz
Source:
Marine pollution bulletin 2019 v.138 pp. 451-457
ISSN:
0025-326X
Subject:
beaches; foods; marine debris; marine environment; packaging; polystyrenes; seawater; straw; surveys; water pollution; watersheds; weather
Abstract:
... Beach accumulation surveys can be used as a proxy to estimate litter flows into the marine environment. However, litter loads can be influenced by various factors including catchment area characteristics, weather conditions and ocean water movements. This complexity is evidenced by the results of five beach surveys conducted in Cape Town in 2017. Observed average litter accumulation rates across t ...
DOI:
10.1016/j.marpolbul.2018.11.065

6. Aeolian sand transport and deposition patterns within a large woody debris matrix fronting a foredune

Author:
Michael J. Grilliot; Ian J. Walker; Bernard O. Bauer
Source:
Geomorphology 2019 v.338 pp. 1-15
ISSN:
0169-555X
Subject:
beaches; coarse woody debris; eolian sands; porosity; roughness; sand; sediment transport; topography; vegetation cover; wind; British Columbia
Abstract:
... Sediment transport pathways and resulting erosion-deposition patterns across beach-foredune systems can be complex. Although a great deal is known about the effects of wind fetch, surface moisture, topographic forcing, and vegetation cover, the role of large woody debris (LWD) as a control on sediment redistribution across beaches is relatively understudied. Pieces of LWD act as non-porous roughne ...
DOI:
10.1016/j.geomorph.2019.04.010

7. Application of Matrix Scoring Techniques to evaluate marine debris sources in the remote islands of the Azores Archipelago

Author:
Catharina Pieper; Linda Amaral-Zettler; Kara Lavender Law; Clara Magalhães Loureiro; Ana Martins
Source:
Environmental pollution 2019 v.249 pp. 666-675
ISSN:
0269-7491
Subject:
beaches; islands; marine debris; shorelines; Azores
Abstract:
... Three-quarters of all marine debris (MD) consists of plastic, a reflection of their worldwide use, production and waste mismanagement. Data on MD distributions can improve our ability to effectively reduce debris that escapes onto shorelines and the ocean. In this study, the Matrix Scoring Technique (Marine Strategy Framework Directive Technical Group on Marine Litter) was applied as an approach t ...
DOI:
10.1016/j.envpol.2019.03.084

8. Application of power law to vertical distribution of longshore currents

Author:
Zhen-wei Zhang; Zhi-li Zou
Source:
Water Science and Engineering 2019 pp. -
ISSN:
1674-2370
Subject:
beaches; field experimentation; spatial distribution
Abstract:
... The vertical profiles of longshore currents have been examined experimentally over plane and barred beaches. In most cases, the vertical profiles of longshore currents are expressed by the logarithmic law. The power law is not commonly used to describe the profile of longshore currents. In this paper, however, a power-type formula is proposed to describe the vertical profiles of longshore currents ...
DOI:
10.1016/j.wse.2019.04.004

9. Application of system approach framework for coastal zone management in Pärnu, SW Estonia

Author:
Hannes Tõnisson; Are Kont; Kaarel Orviku; Ülo Suursaar; Reimo Rivis; Valdeko Palginõmm
Source:
Journal of coastal conservation 2019 v.23 no.5 pp. 931-942
ISSN:
1400-0350
Subject:
atmospheric circulation; beaches; coastal zone management; coasts; floods; resorts; risk; sea ice; sea level; stakeholders; storms; summer; surveys; tourism; winter; Baltic Sea; Estonia
Abstract:
... Due to changes in atmospheric circulation and warmer winters, the frequency of strong westerly storms associated with high sea level in ice-free sea conditions has increased on the western coast of Estonia. This trend is especially dangerous for the sections of depositional seashores along the eastern coast of the Baltic Sea such as Pärnu Bay and its surroundings. Pärnu is the largest city in SW E ...
DOI:
10.1007/s11852-018-0637-6

10. Aracaju beach bars as a contested market: Conflicts and overlaps between market and nature

Author:
Marina de Souza Sartore; Simone de Araújo Pereira; Cae Rodrigues
Source:
Ocean & coastal management 2019 v.179 pp. 104828
ISSN:
0964-5691
Subject:
at-risk population; beaches; coastal zone management; interviews; markets; trade; wilderness; Brazil
Abstract:
... The premise for this paper is that the almost 50 beach bars built on the beaches along the Expansion Urban Zone of the city of Aracaju, in the Northeast of Brazil, constitute a form of commerce on the beach that has become a contested market. This has become more evident since 2014, after a lawsuit was filed by the Brazilian Federal Public Ministry to demolish all the beach bars in Aracaju's Expan ...
DOI:
10.1016/j.ocecoaman.2019.104828

11. Are our beaches safe? Quantifying the human health impact of anthropogenic beach litter on people in New Zealand

Author:
Marnie L. Campbell; Linda Peters; Cameron McMains; Mariana Cruz Rodrigues de Campos; Rebecca J. Sargisson; Boyd Blackwell; Chad L. Hewitt
Source:
Science of the total environment 2019 v.651 pp. 2400-2409
ISSN:
0048-9697
Subject:
animal injuries; anthropogenic activities; beaches; children; decision making; ecosystems; fauna; flora; health insurance; human health; marine debris; risk; tourists; New Zealand
Abstract:
... The environmental, social and cultural importance of beaches permeates human society, yet the risk of human injury associated with increasing exposure to anthropogenic beach litter remains an unknown. While the impact of marine debris and beach litter on marine and coastal fauna and flora is a widely reported global issue, we investigate the impact on human health in New Zealand. Anthropogenic bea ...
DOI:
10.1016/j.scitotenv.2018.10.137

12. Are the n-alkane carbon isotopic profiles of South Australian coastal asphaltites indicative of their extent of weathering?

Author:
David M. McKirdy; Se Gong; Alexander J. Corrick; P. Anthony Hall; Christine Trefry; Andrew S. Ross
Source:
Organic geochemistry 2019 pp. -
ISSN:
0146-6380
Subject:
alkanes; analytical methods; beaches; bitumen; carbon; exposure duration; oils; stable isotopes; weathering; South Australia
Abstract:
... Asphaltic bitumen (asphaltite) found on the ocean beaches of South Australia is considered to be a product of an adjacent, but as yet unlocated, submarine oil seep. Four large asphaltites recently stranded on three different beaches were sub-sampled (n = 5–6) and analysed to determine if their n-alkane δ13C profiles display systematic variation along a transect from the centre to the outer rim of ...
DOI:
10.1016/j.orggeochem.2019.07.002

13. Assess and mapping the flooding hazards using geospatial tools and empirical model along Kenitra coast, Morocco

Author:
Mounir Hakkou; Mehdi Maanan; Tarik Belrhaba; Frédéric Leone; Aïcha Benmohammadi; Khalid El khalidi; Bendahhou Zourarah
Source:
Ocean & coastal management 2019 v.169 pp. 264-272
ISSN:
0964-5691
Subject:
beaches; coastal zone management; coasts; dunes; empirical models; estuaries; floods; global positioning systems; risk; rivers; sand; sea level; storms; surveys; topography; urban areas; Morocco
Abstract:
... This study assesses the coastal flooding risk of Kenitra coast (Morrocan Atlantic) consisting of rectilinear beaches backed by dunes and crossed by the mouth of Sebou river. A Differential Global Positioning System (DGPS) topographic survey of the study area was carried out in order to analyse shore and backshore morphology. Total water levels (TWL) are empirically calculated and statistically ana ...
DOI:
10.1016/j.ocecoaman.2018.12.032

14. Assessing beach and island habitat loss in the Chesapeake Bay and Delmarva coastal bay region, USA, through processing of Landsat imagery: A case study

Author:
Paul Ramón Marbán; Jennifer M. Mullinax; Jonathan P. Resop; Diann J. Prosser
Source:
Remote sensing applications 2019 v.16 pp. 100265
ISSN:
2352-9385
Subject:
Internet; Landsat; beaches; breeding; case studies; climate change; coasts; ecosystems; foraging; geographic information systems; habitat conservation; habitat destruction; habitats; image analysis; islands; remote sensing; sea level; social benefit; thematic maps; wildlife; Chesapeake Bay; United States
Abstract:
... Beaches and islands provide economic and social value to humans and contribute critical habitat for breeding and foraging wildlife. These ecosystems, however, are being severely impacted by global climate change and sea level rise through increased erosion and frequency of inundation. The case study presented here aimed to document island loss in the Chesapeake Bay and Delmarva coastal bay region ...
DOI:
10.1016/j.rsase.2019.100265

15. Assessing climate change associated sea‐level rise impacts on sea turtle nesting beaches using drones, photogrammetry and a novel GPS system

Author:
Miguel R. Varela; Ana R. Patrício; Karen Anderson; Annette C. Broderick; Leon DeBell; Lucy A. Hawkes; Dominic Tilley; Robin T. E. Snape; Matthew J. Westoby; Brendan J. Godley
Source:
Global change biology 2019 v.25 no.2 pp. 753-762
ISSN:
1354-1013
Subject:
Caretta caretta; Chelonia mydas; altitude; beaches; climate change; coasts; conservation areas; egg incubation; global positioning systems; habitats; landscapes; models; nesting; photogrammetry; risk; sea level; sea turtles; surveys; sympatry; viability
Abstract:
... Climate change associated sea‐level rise (SLR) is expected to have profound impacts on coastal areas, affecting many species, including sea turtles which depend on these habitats for egg incubation. Being able to accurately model beach topography using digital terrain models (DTMs) is therefore crucial to project SLR impacts and develop effective conservation strategies. Traditional survey methods ...
DOI:
10.1111/gcb.14526

16. Assessment of mercury mobilization potential in Upper St. Lawrence River riparian wetlands under new water level regulation management

Author:
Evie S. Brahmstedt; Hao Zhou; Erin M. Eggleston; Thomas M. Holsen; Michael R. Twiss
Source:
Journal of Great Lakes research 2019 v.45 no.4 pp. 735-741
ISSN:
0380-1330
Subject:
Archaea; Typha; atmospheric deposition; bacteria; beaches; bioavailability; biodiversity; food webs; freshwater ecosystems; genomics; hydric soils; marshes; mercury; methylation; methylmercury compounds; organic matter; soil horizons; upland soils; wetland soils; Saint Lawrence River
Abstract:
... Mercury is a contaminant of concern in freshwater ecosystems. Riparian wetlands in the Upper St. Lawrence River (USLR) are dominated by monotypic (Typha spp.) marshes due to water level management since 1958. A new management plan will make water levels more closely resemble natural fluctuations and restore riparian wetland biodiversity by eroding some existing marshes. If Typha abundance is reduc ...
DOI:
10.1016/j.jglr.2019.03.001

17. Assessment of the physical vulnerability to erosion and flooding in a sheltered coastal sector: Florianópolis Bay, Brazil

Author:
Yasmim Garcia da Silveira; Jarbas Bonetti
Source:
Journal of coastal conservation 2019 v.23 no.2 pp. 303-314
ISSN:
1400-0350
Subject:
beaches; coasts; energy; humans; infrastructure; water waves; Brazil
Abstract:
... This study aims to characterize the physical vulnerability of the western coast of Santa Catarina Island by applying the Smartline methodology. Erosion and flooding processes can endanger the installed human infrastructure in the coastal zone, with the degree of vulnerability of a given site being dependent on its natural characteristics, or even due to changes induced by human action. The methodo ...
DOI:
10.1007/s11852-018-0659-0

18. Attack and probable predation on ghost crab (Ocypode quadrata) by Red-shouldered Hawk (Buteo lineatus)

Author:
Keith L. McCullough; Thomas R. Rainwater; Mark A. McAlister; Jamie Dozier; Steven G. Platt
Source:
Wilson journal of ornithology 2019 v.131 no.2 pp. 399-402
ISSN:
1559-4491
Subject:
Buteo lineatus; Crustacea; amphibians; beaches; crabs; crayfish; diet; dunes; foraging; habitats; hawks; insects; mammals; predation; predators; reptiles; South Carolina
Abstract:
... Red-shouldered Hawks (Buteo lineatus) feed primarily on mammals, amphibians, and reptiles, but invertebrates also comprise a significant portion of the diet. The majority of invertebrates consumed are insects and crustaceans, with the latter represented to date only by crayfish. In 2016, we observed a Red-shouldered Hawk attack and dismember another crustacean, the ghost crab (Ocypode quadrata), o ...
DOI:
10.1676/18-151

19. Baseline Health Parameters of East Pacific Green Turtles at Southern California Foraging Grounds

Author:
Shreya M. Banerjee; Camryn D. Allen; Todd Schmitt; Brian S. Cheng; Jeffrey A. Seminoff; Tomoharu Eguchi; Lisa M. Komoroske
Source:
Chelonian conservation and biology 2019 v.18 no.2 pp. 163-174
ISSN:
1943-3956
Subject:
Chelonia mydas; beaches; biodiversity; blood chemistry; coastal ecosystems; conservation areas; environmental health; estuaries; foraging; habitats; health status; human development; monitoring; morphometry; normal values; rivers; urbanization; California
Abstract:
... Urban coastal ecosystems are unique intersections of human development and biodiversity, and monitoring populations in these areas is critical to understanding ecosystem health and function. Three highly urbanized estuary systems, San Diego Bay, San Gabriel River, and Seal Beach National Wildlife Refuge (all in California), are the northernmost foraging habitats for green turtles (Chelonia mydas) ...
DOI:
10.2744/CCB-1347.1

20. Beach litter in Ecuador and the Galapagos islands: A baseline to enhance environmental conservation and sustainable beach tourism

Author:
Carlos Mestanza; Camilo M. Botero; Giorgio Anfuso; J. Adolfo Chica-Ruiz; Enzo Pranzini; Alexis Mooser
Source:
Marine pollution bulletin 2019 v.140 pp. 573-578
ISSN:
0025-326X
Subject:
beaches; cleaning; international tourism; natural resources conservation; water pollution; Ecuador; Galapagos Islands
Abstract:
... The presence and characterization of beach litter was investigated, according to the EA/NALG (2000) methodology, at 59 sites along four provinces of Ecuador, i.e., three continental and the Galapagos Islands Province. The methodology, which has been verified in several countries, was used to classify beaches into four grades (from “A” – excellent to “D” – poor) according to the content of nine typ ...
DOI:
10.1016/j.marpolbul.2019.02.003