The red grouper is commercially important in the Gulf of Mexico. Such subjects as geographical distribution, depth distribution, seasonal abundance and migration, temperatures of occurrence, and habitat are included. (Author)

Jun 16, 2011 ... R. parksii truffles were not associated with organic layer depth, root density or forest structure. E. granulatus truffles were distributed ...

... These depth profiles were used to consider regulation of P(org) distribution by biomass abundance, chemical structure, and physical protection ...

This in-depth report summarizes existing information on the life history, status, distribution, and abundance of the Rusty Blackbird in Canada....

... of the response of bird abundance to each independent variable. For water depth, the a priori expectation, based ... the cross-products of each pairwise combination of independent variables (Neter et al. ...

An analysis of published and original data on the meiobenthos abundance in the depth interval from 100 to 9807 m (in total, 665 records, 445 of them obtained for depths exceeding 1000 m) revealed general regularities in its distribution. The influence of the sampling and data processing methods on the quantitative ...

Surveys in 1975 and 1976 in the Michigan waters of Lake Erie assessed the relative abundance and distribution of larval fish. Seasonal fluctuations, patterns of distribution, and depth preferences were noted for the 24 larval fish taxa identified. Special...

A sampling study was designed to investigate small-scale abundance fluctuations of diatoms over a distance of 10 miles. It was carried out at three depths in each of two oceanic environments of the North Pacific. Significant nonrandom distributions were o...

Surveys in 1975 and 1976 in the Michigan waters of Lake Erie assessed the relative abundance and distribution of larval fish. Seasonal fluctuations, patterns of distribution, and depth preferences were noted for the 24 larval fish taxa identified. Special emphasis was placed on f...

The present study is a first attempt to examine sponge distribution in the Persian Gulf (Iranian costs) and suggests that physical and biological factors influence the sponge distribution patterns in Hengam Island. The purpose of this study is to provide patterns of sponges distribution and depth influence on ...

:287-297. In 32 Florida lakes, Secchi depth (SD), light attenuation coefficient measured with a light meter, plant, light attenuation, Secchi depth, sediment, slope The distribution and abundance of aquatic macrophytes as measured by Secchi depth (SD) and MDC in 26 Florida lakes. They also ...

of maturity class, larger fish occurred farther offshore at night. Stomach contents data confirmed fish of both sexes occurred at shallow depths at night as well; however, the distribution of numbers significant differences (Table 2). Clearly, queen- fish present at 5-27 m depths at night occur at 5

million years, these two carbon fluxes have been modulated by the relative abundance of diatoms phy- toplankton community composition in the Atlantic Ocean and show that the distribution of diatoms from seasonal cycles to geological transitions. coccolithophorids diatoms stratification climate change

The relatively high volatile abundances inferred from LCROSS measurements cannot be representative of a homogeneous distribution within the Cabeus permanently shadowed region, but lateral and/or depth variations can account for the discrepancy.

Number, total biomass, and individual mass of winter buds of Vallisneria americana was significantly related to the depth of the 1% of surface irradiance (Z) and the photosynthetic photon irradiance calculated for each shading treatment imposed during thi...

The author has identified the following significant results. The distribution and abundance of white marlin correlated with the chlorophyll, water temperature, and Secchi depth sea truth measurements. Results of correlation analyses for dolphin were incon...

... MEASUREMENT, WATER, DEPTH, STATISTICAL ... STATISTICAL DISTRIBUTIONS, SELECTION. ... Distribution Statement : APPROVED FOR ...

Measurements of ash-free dry weight were used to characterize the effects of a heated effluent on submerged macrophytes in a reactor cooling reservoir. The species which were most abundant during the summers of 1974 and 1975 were Myriophyllum spicatum L. and Eleocharis acicularis (L.) R. and S. Examination of the vertical distribution of the shoot biomass ...

Microhabitat specialists offer tractable systems for studying the role of habitat in determining species' distribution and abundance patterns. While factors underlying the distribution patterns of these specialists have been studied for decades, few papers have considered factors influencing both the microhabitat and the inhabitant. On ...

Peracarida are an important component of both the deep-sea fauna and the fauna known from the Antarctic shelf. The peracarid composition from epibenthic-sledge samples obtained during the expeditions ANDEEP I III is shown and compared to that of other deep-sea basins and the Antarctic shelf. The Amphipoda were the most abundant taxon in the samples, with 43% of all peracarid ...

This report presents in-depth analyses of current meter records obtained from the deployment of continuously recording current meters in the Potomac estuary in 1974. The analyses of transport characteristics are presented in relation to the distribution of striped bass ichthyoplankton in the tidal portion of the Potomac River. The characteristics of ...

Recently documented changes to benthic communities in the lower Great Lakes have created concerns about the status of benthic macroinvertebrates in Lake Superior. This lakewide study was conducted to ascertain their status in U.S. nearshore waters of Lake Superior. Benthic macroinvertebrates were collected from 27 sites representing the U.S. nearshore waters (20 to 110 m) of Lake Superior in ...

Neutral and positively charged clusters produced by 4 keV Ar[sup +] ion bombardment of a liquid gallium-indium eutectic alloy have been studied by time-of-flight mass spectrometry coupled with single photon positionization of the neutrals. The abundence distributions for clusters with equal nuclearity are statistical. They confirm a strong indium surface ...

... Title : DEPTH DISTRIBUTION OF DEFECTS, MEASURED BY POSITRON ANNIHILATION, TITANIUM IRRADIATED BY ELECTRON PULSES. ...

... were also made at various depths and through ... It was observed that the angular distribution pattern of ... light field changed in shape with depth and it ...

Background and AimsMany recent studies show that plant�pollinator interaction webs exhibit consistent structural features such as long-tailed distributions of the degree of generalization, nestedness of interactions and asymmetric interaction dependencies. Recognition of these shared features has led to a variety of mechanistic attempts at explanation. Here it is ...

The Gulf of California is one of the most mega-diverse regions in the world, for which few fishery information is available. We present here latitudinal and bathymetric distribution of the most abundant and frequent bycatch species from the Gulf of California. The samples were obtained from a total of 111 hauls taken during seven research cruises of the ...

Unusually high nitrogen abundances in the atmospheres of the hot DA white dwarfs GD 659, RE J1032+532, and RE J1614-085 have been reported in the literature. Because of the strength of the NV ?1240 doublet and the absence of nitrogen absorption in extreme ultraviolet (EUV) spectra, it has been proposed that the nitrogen abundance as a function of ...

A comparative study of small temperate lakes (<20 square kilometers) indicates that the mixing depth or epilimnion is directly related to light penetration measured as Secchi depth. Clearer lakes have deeper mixing depths. This relation is the result of greater penetration of incident solar radiation in lakes and enclosures with ...

Zooplankton concentration and composition was related to hydrographic parameters in Onslow Bay, NC. During summer the hydrography of Onslow Bay is often characterized by the presence of nutrient-rich Gulf Stream waters. These originate from greater depths of the Gulf Stream, intrude at subsurface depths, frequently strand in the Bay and have high ...

Zooplankton concentration and composition were related to hydrographic parameters in Onslow Bay, NC. During summer the hydrography of Onslow Bay is often characterized by the presence of nutrient-rich Gulf Stream waters. These originate from greater depths of the Gulf Stream, intrude at subsurface depths, frequently strand in the Bay and have high ...

Detailed studies on the relation of structure and function of microbial communities in a sediment depth profile scarcely exist. We determined as functional aspect the vertical distribution of the acetotrophic and hydrogenotrophic CH4 production activity by measuring production rates and stable 13C/12C-isotopic signatures of CH4 in the profundal sediment of ...

sightings . . . 32 10. Locations of all common, Risso's, and bottlenose dolphin sightings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 15. Depth distribution of all on-effort Risso's dolphin sightings right whale dolphins (N^ = 754, CV = 0.40) and Dall's porpoise (N^ = 370, CV = 0.62). Risso's dolphin

The perception biases associated with manta tow estimates of the abundance of benthic organisms were investigated using artificial targets, the density, distribution and availability of which could be controlled. The proportion of targets which are counted by a mantatowed observer (sightability) and the precision of the resultant estimates of their ...

... USGS Fact Sheet July 1999 Measuring Variability in Forage Fish Abundance Introduction The abundance, distribution and h...

A Monte Carlo spectrum synthesis code is employed to determine the abundance and distribution of s-process elements in the early-time spectrum of SN 1987A. The problem of a possible overabundance of barium is studied by means of an NLTE code which calculates the occupation numbers for the Ba II levels and the relative abundances of Ba ...

The diversity and distribution of metazooplankton across the Mediterranean Sea was studied along a 3000 km long transect from the eastern to the western basins during the BOUM cruise in summer 2008. Metazooplankton were sampled using both a 120 ?m mesh size bongo net and Niskin bottles at 17 stations. Here we report on the stock, the composition and the structure of the ...

The effect of depth on the distribution and sex-specific energy allocation patterns of a common coral reef fish, Chrysiptera rollandi (Pomacentridae), was investigated using depth-stratified collections over a broad depth range (5-39 m) and a translocation experiment. C. rollandi consistently selected rubble ...

Language: English ...

Contents: Distribution and abundance of king crab larvae, Paralithodes camtschatica and P. platypus in the southeast Bering Sea; Distribution and abundance of the larvae of tanner crabs in the southeastern Bering Sea; Distribution and abundance of other b...