Larval Behavior and Protective Implications for Sea Scallops and Surf Clams within the Middle Atlantic Bight: Part Two, Variability of Physical Environment and Larval Behaviors

2019 ◽  
Vol 2 (2) ◽  
Keyword(s):  
Physical Environment ◽  
Climate Changes ◽  
Larval Growth ◽  
Growth Patterns ◽  
Larval Behavior ◽  
Larval Release ◽  
Physical Conditions ◽  
Climatic Variations ◽  
Middle Atlantic ◽  
Sea Scallops

Larval growth and settlement rates are important larval behaviors for larval protections. The variability of larval growthsettlement rates and physical conditions for 2006-2012 and in the future with potential climate changes was studied using the coupling ROMS-IMBs, and new temperature and current indexes. Forty-four experimental cases were conducted for larval growth patterns and release mechanisms, showing the spatial, seasonal, annual, and climatic variations of larval growthsettlement rates and physical conditions, demonstrating that the slight different larval temperature-adaption and larval release strategies made difference in larval growth-settlement rates, and displaying that larval growth and settlement rates highly depended upon physical conditions and were vulnerable to climate changes.

scholarly journals Larval Behavior and Protective Implications for Sea Scallops and Surf Clams within the Middle Atlantic Bight: Part One, a Sensitivity Study

2019 ◽  
Vol 2 (2) ◽  
Keyword(s):  
Sensitivity Study ◽  
Growth Patterns ◽  
Ocean Modeling ◽  
Placopecten Magellanicus ◽  
Larval Behavior ◽  
Regional Ocean Modeling System ◽  
Middle Atlantic Bight ◽  
Surf Clam ◽  
Middle Atlantic ◽  
Sea Scallops

In this study, sensitivity studies of larval behaviors were performed, using numerical modeling and analytical methods, for sea scallops (Placopecten magellanicus) and surf clams (Spisula solidissima) in the Middle Atlantic Bight during 2006 and 2010. Based on multiple experiments, a regional ocean modeling system (ROMS) was implemented as the primary physical model, and larval individual behavior models (IBMs) for sea scallops and surf clam larvae were implemented and coupled to the ROMS. To simulate the physical environment and larval behavior using a series of numerical experiments, he coupled ROMS and IBMs were then employed and were driven by realistic dynamic forcing (e.g., winds, tides, and climatological mean boundaries), thermo-dynamic fluxes (e.g., solar radiation, sensible and latent heating), and hydrological forcing for larval behaviors such as vertical swimming and sinking, horizontal drifting with currents, growth, and settlement. Various growth patterns, release types, and larval behavioral parameters were analyzed and are summarized here, based on implications for the protection of sea scallops and surf clam larvae in the Middle Atlantic Bight.

YENİDOĞAN YOĞUN BAKIM ÜNİTELERİNDE İŞ KAZALARI RİSKLERİ VE NEDENLERİNE YÖNELİK BİR ARAŞTIRMA

2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Haluk Tanrıverdi ◽  
Orhan Akova ◽  
Nurcan Türkoğlu Latifoğlu
Keyword(s):  
Intensive Care ◽  
Intensive Care Units ◽  
Physical Environment ◽  
Neonatal Intensive Care ◽  
Organizational Factors ◽  
Occupational Accidents ◽  
Neonatal Intensive Care Units ◽  
Work Related ◽  
Physical Conditions ◽  
The Relationship

This study aims to demonstrate the relationship between the qualifications of neonatal intensive care units of hospitals (physical conditions, standard applications, employee qualifications and use of personal protective equipment) and work related causes and risks, employee related causes and risks when occupational accidents occur. Accordingly, a survey was prepared and was made among 105 nurses working in 3 public and 3 private hospital's neonatal intensive care units, in the January of 2010. The survey consists of questions about the qualifications of neonatal intensive care units, work related causes and risks, and employee related causes and risks. From the regression analysis conducted, it has been found that confirmed hypotheses in several studies in the literature were not significant in this study. The sub-dimensions in which relationships has been found show that the improvement of the physical environment in workplace, the improvement of the employee qualifications and standard applications can reduce the rate of occupational accidents. According to the results of this study management should take care of the organizational factors besides to improvement of the physical environment in workplace, the improvement of the employee qualifications and standard applications.

scholarly journals The Structure and Physical Environment of Loch Leven, Scotland

1974 ◽  
Vol 74 ◽  
pp. 81-100 ◽  
Author(s):  
I. R. Smith
Keyword(s):  
Land Use ◽  
Environmental Factors ◽  
Physical Environment ◽  
Catchment Area ◽  
Trophic Levels ◽  
Phytoplankton Production ◽  
Physical Conditions ◽  
Loch Leven ◽  
Hydraulic Conditions ◽  
Temperature Water

SynopsisThis paper describes the environment, structure and internal physical conditions of the loch. The first section deals with structure, land use and climate of the catchment area. The structure of the loch itself is then considered together with a brief description of the sediments. The bulk of the paper is devoted to the effect of sun, rain and wind on the loch, e.g., radiation and water temperature, water balance and hydraulic conditions. It ends with a summary of the influence of environmental factors on phytoplankton production and higher trophic levels.

scholarly journals The Influence of Climatic Variations on the Stability of Wheat Plant Height

2018 ◽  
Vol 1 (1) ◽  
pp. 508-514
Author(s):  
Steliana Paula Barbu ◽  
Aurel Giura ◽  
Daniel Cristina ◽  
Călina Petruţa Cornea
Keyword(s):  
Plant Height ◽  
Climate Changes ◽  
Selection Process ◽  
Wheat Plant ◽  
Selected Lines ◽  
Breeding Programs ◽  
Climatic Variations ◽  
The Stability ◽  
Dh Lines ◽  
Or Genes

Abstract The decrease of variability sources and the genotypes instability as a result of climate changes from the last years were issues addressed in the breeding programs. For breeders the stability of some parameters like plant height is very important in selection process, therefore the influence of climatic variations it is aimed to be reduced by genetic response of the genotypes. Semi-dwarf genotypes are preferred by breeders because in this way is avoided the lodging risk. A set of 307 mutant and mutant/recombinant wheat DH lines, along with parental genotypes, was analyzed in three different years for plant height and the semi-dwarf selected lines were evaluated for stability of this parameter. The material was also analyzed for the presence of Lr34, or genes and 1A/1R translocation. In our study the reduced plant height and its stability was not associated with any of the genetic background

scholarly journals Impacts on Estuarine Ecosystem from Climate Changes Based on Modeling Experiments within Delaware Bay

2019 ◽  
Vol 2 (2) ◽  
Keyword(s):  
High Resolution ◽  
Physical Environment ◽  
Climate Changes ◽  
River Flow ◽  
Salinity Gradient ◽  
Delaware Bay ◽  
Estuarine Ecosystem ◽  
Salt Intrusion ◽  
Shear Dispersion ◽  
Freshwater Resource

Coastal regions concentrate ecological behaviors, have more observations, permit high-resolution modeling, and serve as a good climate-changing sensor. For the Delaware Bay, a high-resolution hydro-dynamical model (ROMS) was tailored, validated and applied to hindcast its largely unrecorded physical environment, to investigate the roles of the physical environment influencing oyster diseases, and to inquire into the future fate of the bay in response to climate changes. Sensitivity studies suggested that 50-100-cm sea-level rise (SLR) in approximately 50-100 years may occur and salinize the Delaware Bay mainly through weakening salinity gradient and salt advection due to the intensified mixing induced by the widened bay. Highly correlating to mixing and therefore changing salt advection, the width of the bay mattered to salt intrusion distance more than the depth of the bay did. This conclusion is differenet than that from the classic theories that emphasize the depth in influencing the salt intrusion distance via the steady shear dispersion. The SLR-induced salinization may not be offset by intensified river flow input, but may be substantially mitigated by fixing the coastline (or width). Climate warming may warm the shallow and thermally sensitive bay. The warm and salty conditions would compromise freshwater resource in the upper bay and be generally unfavorable to oysters by promoting oyster diseases (i.e., MSX and Dermo). Salinization might occur in other similar estuaries of narrow geometry, shallow depth, and small volume.

scholarly journals Larval Growth Patterns in the Aesop Shrimp Pandalus Montagui

1997 ◽  
Vol 17 (3) ◽  
pp. 472-479 ◽  
Author(s):  
Klaus Anger ◽  
Kirstin Schultze
Keyword(s):  
Larval Growth ◽  
Growth Patterns

scholarly journals Morphological Murals: The Scaling and Allometry of Butterfly Wing Patterns

2019 ◽  
Vol 59 (5) ◽  
pp. 1281-1289 ◽  
Author(s):  
Rayleigh Palmer ◽  
Kenneth Z McKenna ◽  
H F Nijhout
Keyword(s):  
Imaginal Disc ◽  
Larval Instar ◽  
Larval Growth ◽  
Pupal Stage ◽  
Color Pattern ◽  
Growth Patterns ◽  
Junonia Coenia ◽  
Wing Size ◽  
Color Patterns ◽  
Final Size

Abstract The color patterns of butterflies moths are exceptionally diverse, but are very stable within a species, so that most species can be identified on the basis of their color pattern alone. The color pattern is established in the wing imaginal disc during a prolonged period of growth and differentiation, beginning during the last larval instar and ending during the first few days of the pupal stage. During this period, a variety of diffusion and reaction–diffusion signaling mechanisms determine the positions and sizes of the various elements that make up the overall color pattern. The patterning occurs while the wing is growing from a small imaginal disc to a very large pupal wing. One would therefore expect that some or all aspects of the color pattern would be sensitive to the size of the developmental field on which pattern formation takes place. To study this possibility, we analyzed the color patterns of Junonia coenia from animals whose growth patterns were altered by periodic starvation during larval growth, which produced individuals with a large range of variation in body size and wing size. Analyses of the color patterns showed that the positions and size of the pattern elements scaled perfectly isometrically with wing size. This is a puzzling finding and suggests the operation of a homeostatic or robustness mechanism that stabilizes pattern in spite of variation in the growth rate and final size of the wing.

Lake Level and Climate Changes between 42,000 and 18,000 14C yr B.P. in the Tengger Desert, Northwestern China

2002 ◽  
Vol 58 (1) ◽  
pp. 62-72 ◽  
Author(s):  
Hucai Zhang ◽  
Bernd Wünnemann ◽  
Yuzhen Ma ◽  
Jinlan Peng ◽  
Hans-J. Pachur ◽  
...  
Keyword(s):  
North Atlantic ◽  
Climate Changes ◽  
Climatic Conditions ◽  
Northwestern China ◽  
Tengger Desert ◽  
Climatic Variations ◽  
The North ◽  
Modern Analogue ◽  
Fossil Data ◽  
The Tengger Desert

AbstractMultiple lines of stratigraphic, geochemical, and fossil data suggest that fresh-mesohaline paleolakes were widespread in the Tengger Desert of northwestern China and underwent major fluctuations during the late Pleistocene. The paleolakes started to develop at ca. 42,000 14C yr B.P. The lake levels were the highest between 35,000 and 22,000 14C yr B.P., during which Megalake Tengger dominated the landscape. The climatic conditions at this time were unique for this area and have no modern analogue. After an episode of decline between 22,000 and 20,000 14C yr B.P. and an episode of rebound between 20,000 and 18,600 14C yr B.P., the paleolakes started to desiccate and completely disappeared around 18,000 14C yr B.P. The environmental proxy data indicate that the Megalake Tengger formed under warm–humid climates. The reconstructed climatic variations appear to be correlative with the abrupt climatic events reconstructed for the North Atlantic.

scholarly journals Hubungan iklim dan kondisi lingkungan fisik rumah terhadap insidensi demam berdarah dengue di beberapa zona musim di Daerah Istimewa Yogyakarta (Studi kasus di Kecamatan Kasihan, Kabupaten Bantul, Yogyakarta)

2016 ◽  
Vol 32 (12) ◽  
pp. 455
Author(s):  
Farid Ayumi ◽  
Susi Iravati ◽  
Sitti Rahmah Umniyati
Keyword(s):  
Dengue Fever ◽  
Physical Environment ◽  
Ecological Study ◽  
Mosquito Larvae ◽  
Climate Factors ◽  
Air Humidity ◽  
Physical Conditions ◽  
The Relationship ◽  
Breeding Place

Climate factors and conditions of physical environment house for the dengue fever incidence in several zone season in: a case study from Bantul, YogyakartaPurposeThis research aimed to determine the relationship between climate (rainfall, air humidity, and temperature) and physical conditions of house environment with incidence of dengue fever in some seasonal zones in Yogyakarta.MethodsThe design of this study was an ecological study by time to observe the trend of dengue incidence in Yogyakarta within the period of 2010-2014.ResultsResults showed not all ZOMs were related to the incidence of dengue fever in Yogyakarta. Environmental conditions of the physical house that have a correlation with the dengue fever were breeding place outside, while the use of gauze ventilation and the existence of mosquito larvae in-house, were not correlated to an occurrence of dengue fever.ConclusionRainfall, air humidity, and temperature have a correlation with the incident of dengue fever in some ZOM area. The condition of the physical environment of the house in the form of breeding places outside of the house is associated with the occurrence of dengue fever. 

scholarly journals The Relationship between Environmental Materials and Indonesian Language Learning

2020 ◽  
Author(s):  
Maya My Hustin
Keyword(s):  
Language Learning ◽  
Physical Environment ◽  
Physical Conditions ◽  
Surrounding Environment ◽  
Environmental Material ◽  
Environmental Materials ◽  
To Come ◽  
The Relationship ◽  
Land Water

The environment is a combination of physical conditions that include the state of natural resources such as land, water, solar energy, minerals, and flora and fauna that grow on land and in the oceans, with institutions that include human creation such as decisions on how to use the physical environment. The relation or relationship between environmental material in Indonesian language learning is that there is material that contains the surrounding environment making it easier for students to understand the text or material provided because they only need to understand what is around them and also with this environmental material it is expected to add the awareness of students in protecting their nature so that it can be used in the long term life of the future generations to come.

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