THE EFFECT OF FENITROTHION FROM LARGE-SCALE FOREST SPRAYING ON BENTHOS IN NEW BRUNSWICK HEADWATERS STREAMS

1975 ◽  
Vol 107 (7) ◽  
pp. 743-760 ◽  
Author(s):  
D. C. Eidt
Keyword(s):  
New Brunswick ◽  
Large Scale ◽  
Stream Discharge

AbstractKills of arthropods in three streams containing fenitrothion up to 6.38 ppb were measured using drift nets. Stoneflies and some species of mayflies were most affected. The drift responses of various taxa to the insecticide and to stream discharge are documented. The benthos was not seriously depleted.

Relationship of upstream migrating adult Atlantic salmon (Salmo salar) and stream discharge within Catamaran Brook, New Brunswick

2007 ◽  
Vol 64 (3) ◽  
pp. 563-573 ◽  
Author(s):  
Sean C Mitchell ◽  
Richard A Cunjak
Keyword(s):  
Body Size ◽  
Atlantic Salmon ◽  
New Brunswick ◽  
Salmo Salar ◽  
Predictive Ability ◽  
River System ◽  
Low Flow ◽  
Stream Discharge ◽  
Atlantic Salmon Salmo Salar ◽  
Adult Abundance

Stream discharge has long been associated with abundance of returning adult spawning salmonids to streams and may also affect body size distribution of adult salmon as low flows interfere with returns of larger-bodied fish. We examined these relationships of abundance and body size within Catamaran Brook, a third-order tributary to the Miramichi River system of New Brunswick, Canada, to investigate the causes of a declining trend in annual returns of Atlantic salmon (Salmo salar) to this stream. Regression models of adult abundance, proportion of the run as grilse, and body size of returning adults as functions of maximum daily stream discharge during the period of upstream spawner migration were constructed. Adult abundance shows a logarithmic relationship with stream discharge and provides good predictive ability, while appearing to not be significantly related to adult abundance in the larger Miramichi system. The proportion as grilse in the run and female body size are also logarithmically related to stream discharge, with low flow years being very influential in the regressions. These relationships of Atlantic salmon population abundance and body size characteristics have implications with respect to stock integrity and production of the following generation.

scholarly journals Stream discharge using mobile large-scale particle image velocimetry: A proof of concept

2008 ◽  
Vol 44 (9) ◽  
Author(s):  
Y. Kim ◽  
M. Muste ◽  
A. Hauet ◽  
W. F. Krajewski ◽  
A. Kruger ◽  
...  
Keyword(s):  
Particle Image Velocimetry ◽  
Large Scale ◽  
Particle Image ◽  
Proof Of Concept ◽  
Stream Discharge ◽  
Image Velocimetry ◽  
Scale Particle

Evidence of DDT Resistance in Populations of Spruce Budworm, Choristoneura fumiferana (Clem.), From DDT-sprayed Areas of New Brunswick

1965 ◽  
Vol 97 (12) ◽  
pp. 1281-1293 ◽  
Author(s):  
A. P. Randall
Keyword(s):  
New Brunswick ◽  
Large Scale ◽  
Choristoneura Fumiferana ◽  
Spruce Budworm ◽  
Data Interpretation ◽  
Fuel Oil ◽  
Susceptible Population ◽  
Mortality Curve ◽  
Progressive Development ◽  
Ddt Resistance

AbstractA series of laboratory toxicological experiments using various concentrations of oil formulated DDT solutions (AR-50/fuel oil (2:7 V/V)) was carried out on 5th and 6th instar spruce budworm larvae collected in the field from DDT-sprayed and untreated areas of New Brunswick, Canada, and Maine, U.S.A.Results obtained in 1959, 1961, and 1962 with larvae collected from isolated, unsprayed areas in New Brunswick showed a consistent, straight log-dosage probit mortality curve. Larvae collected in 1962 and 1963 from infestation centres previously subjected to three, four, and five applications of non-consecutive large-scale aerial sprays of DDT showed a significant departure from the straight log-dosage probit curve previously obtained. The departure occurs as a change in the shape of the curve as well as a shift to the higher concentration range of DDT. The magnitude of change appears to be correlated with the number of sprays to which the population was exposed. Results obtained in 1962 and 1963, from untreated control and inter-spray areas, bounded by DDT-sprayed forest lands, showed a small but significant departure from the normal straight probit line of a susceptible population. These changes are indicative of a progressive development of DDT resistance in wild populations of spruce budworm.Studies on the effect of the tolerance of spruce budworm larvae within instar classes to the action of DDT showed that the early phase of instar development immediately after moulting is more susceptible to the action of DDT, whereas the latter phase of instar development immediately prior to moulting is more tolerant to topical application of DDT than the average for the instar. This effect is evident in both susceptible and resistant populations.The data interpretation assumes that a deviation from the straight line probit dosage – mortality curve is indicative of a difference in the DDT-susceptibility factor of the budworm population and that in the course of the tests, the amount of toxicant causing mortality was not proportional to the dosage.

Hematozoa of the passeriforms of the Tantramar Marshes, New Brunswick

1975 ◽  
Vol 53 (10) ◽  
pp. 1432-1442 ◽  
Author(s):  
Gordon F. Bennett ◽  
Marilyn Cameron ◽  
Ellen White
Keyword(s):  
New Brunswick ◽  
Environmental Quality ◽  
Natural Environment ◽  
Large Scale ◽  
Aerial Application ◽  
Future Studies ◽  
Environmental Alteration ◽  
Baseline Information

The prevalence of hematozoa in 3096 passeriforms of 70 species collected from 1972 to 1974 from the Tantramar Marshes in New Brunswick and 518 birds of 28 species from Charlotte County, New Brunswick, collected in 1973 was analyzed with respect to the effect of (i) climate, (ii) aerial application of insecticide, and (iii) large-scale environmental alteration. The effect of climate was found to be marked and of such magnitude as to mask other effects that may have arisen as a result of man's interference with the natural environment. The data presented represent the first analysis of the hematozoa of passeriforms for the New Brunswick region and may serve as baseline information for future studies using the prevalence of avian hematozoa as a criterion of environmental quality.

scholarly journals Is Forensic Entomology Lost in Space?

Insects ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 11
Author(s):  
Denis R. Boudreau ◽  
Gaétan Moreau
Keyword(s):  
Spatial Analysis ◽  
New Brunswick ◽  
Forensic Entomology ◽  
Large Scale ◽  
Scale Effects ◽  
Spatial Dynamics ◽  
Spatial Correlations ◽  
Interspecific Relationships ◽  
Larval Stages ◽  
Interpolation Techniques

Spatial and scale effects have barely been considered in forensic entomology, despite their pervasive influence on most of the parameters affecting the development of insect larval stages and the progression of insect succession on cadavers. Here, we used smoothing/interpolation techniques and semivariograms to document the spatial dynamics of sarcosaprophageous Calliphoridae, an important forensic taxon, in the Greater Moncton area in New Brunswick, Canada. Results indicated that the spatial dynamics of Calliphoridae differed between species, some species showing strong patterns of regional aggregation while others did not. Multivariate spatial correlations indicated that interspecific relationships in space varied widely, ranging from local and large-scale aggregation to spatial anticorrelation between species. Overall, this study suggested that even within a restricted timescale, the spatial dynamics of Calliphoridae can operate at many scales, manifest in different patterns, and be attributed to multiple different causes. We stress that forensic entomology has much to benefit from the use of spatial analysis because many important forensic questions, both at the fundamental and practical levels, require a spatial solution.

Integrated Surveys in New Brunswick

1966 ◽  
Vol 20 (2) ◽  
pp. 84-89
Author(s):  
Willis F. Roberts
Keyword(s):  
New Brunswick ◽  
Coordinate System ◽  
Large Scale ◽  
Land Area

The progress of survey integration in the province of New Brunswick has been rapid; one fifth of the total land area has now been covered by permanent monumentation. In the course of these surveys, conducted by the Department of Lands and Mines, some of the earlier procedures have been revised and new surveying aids, notably the model 6 geodimeter, adopted. Legislation for compulsory integration of municipal and legal surveys under the provincial coordinate system does not exist in New Brunswick, but a Land Surveys Act has been drafted authorizing agreements with municipalities involving large-scale mapping, the establishment of “integrated survey areas” and certain other regulations.

scholarly journals NOTES ON THE CANADA PORCUPINE IN THE MARITIME PROVINCES

1942 ◽  
Vol 18 (4) ◽  
pp. 182-187 ◽  
Author(s):  
W. A. Reeks
Keyword(s):  
New Brunswick ◽  
Large Scale ◽  
The United States ◽  
Control Methods ◽  
Forest Trees ◽  
Maritime Provinces ◽  
Small Areas ◽  
Degree Of Control ◽  
And Control ◽  
Scale Control

The Canada porcupine is discussed mainly from the standpoint of damage and control. The paper is based on the analysis of a questionnaire issued to foresters and forest rangers and is supplemented by data from the literature and some original observations.Feeding on forest trees is extensive in parts of New Brunswick and Nova Scotia but since all of the trees attacked are not crop trees serious damage to the stand does not always follow. Damage is severe in localized areas where the stands are of particular value, as in plantations, experimental areas and around camp sites.The only method of large-scale control ever attempted in the Maritime Provinces has been the bounty system. While the effectiveness of this method has not been carefully studied, it appears from parallel cases in the United States that the bounty system is generally expensive for the degree of control effected. Control methods probably serve best if applied intensively to small areas where the damage is most serious. A method of localized control by den poisoning is discussed.

Silurian tabulate coral biostratigraphy and biofacies of northern New Brunswick and the southern Gaspé Peninsula

1990 ◽  
Vol 27 (9) ◽  
pp. 1143-1158 ◽  
Author(s):  
Graham A. Young ◽  
James P. A. Noble
Keyword(s):  
New Brunswick ◽  
Relative Abundance ◽  
Large Scale ◽  
The Other ◽  
Region Analysis ◽  
Abundance Data ◽  
Tabulate Coral ◽  
Gaspe Peninsula ◽  
Tabulate Corals ◽  
Gaspé Peninsula

Diverse Early and Late Silurian tabulate coral faunas occur in the Baie des Chaleurs region. Analysis of relative abundance data of tabulate corals from the Limestone Point and La Vieille formations of northern New Brunswick and the Anse à Pierre-Loiselle, La Vieille, and Gascons formations of the southern Gaspé Peninsula allowed the recognition of three recurrent large-scale biofacies: the Propora–Heliolites, Cystihalysites, and Syringopora biofacies. The Syringopora Biofacies lacks the characteristics that would allow a zonation to be produced, but in each of the other biofacies, two zones are erected. These can be applied throughout the Baie des Chaleurs region and may be used for correlation with other areas having faunal affinities with this region.

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