OBSERVATIONS ON THE BIOLOGY OF AMETROPUS NEAVEI (EPHEMEROPTERA: AMETROPODIDAE) FROM A LARGE RIVER IN NORTHERN ALBERTA, CANADA

1979 ◽  
Vol 111 (7) ◽  
pp. 855-858 ◽  
Author(s):  
Hugh F. Clifford ◽  
David R. Barton
Keyword(s):  
Life Cycle ◽  
Small Particle ◽  
Large River ◽  
Large Rivers ◽  
Flowing Water ◽  
Emergence Period ◽  
Athabasca River ◽  
Northeastern Alberta ◽  
Northern Alberta

AbstractAmetropus neavei McDunnough populations apparently inhabit only large rivers. In the Athabasca River of northeastern Alberta, Canada, the species has an univoltine life cycle, with some overlap of generations. There appears to be an extended emergence period (June and July), the nymphs are found in flowing water at depths greater than 0.5 m, and the population is almost entirely small-particle detritivores.

scholarly journals Accessing and Mobilizing “New” Data to Evaluate Emerging Environmental Impacts on Semi-Aquatic Mammals

Land ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 345
Author(s):  
Glynnis A. Hood
Keyword(s):  
Oil Sands ◽  
Research Process ◽  
Knowledge Mobilization ◽  
Athabasca River ◽  
River Otters ◽  
Literature Reviews ◽  
Wood Buffalo National Park ◽  
Northeastern Alberta ◽  
Northern Alberta ◽  
Aquatic Mammals

This paper describes how knowledge mobilization evolved during a study that assessed a proposed increase in industrial water withdrawals from the Athabasca River in northern Alberta, Canada, and potential impacts on a suite of freshwater semi-aquatic mammals in the broader ecosystem. The oil sands region in northeastern Alberta faces various pressures that require rapid knowledge mobilization and decision making, while still acknowledging ecological sensitivities immediately downstream in the Peace-Athabasca Delta (PAD) in the Wood Buffalo National Park. Data were acquired using a multi-faceted approach, including literature reviews, acquisition and synthesis of raw data, and interviews with local knowledge holders. The final outcome of the study was then contextualized relative to elements of knowledge mobilization: (1) research, (2) dissemination, (3) uptake, (4) implementation, and (5) impact. Knowledge mobilization was easiest to quantify for the first two elements, yet was still present in varying forms in the latter stages. The cultural importance of beavers, muskrats, river otters, and mink for communities associated with the Athabasca River and the PAD allowed for increased engagement during all stages of the research process, which then facilitated the co-production of potential solutions among different organization and perspectives.

scholarly journals Evidence of Arboreal Lichen Use in Peatlands by White-tailed Deer, Odocoileus virginianus, in Northeastern Alberta

2008 ◽  
Vol 122 (3) ◽  
pp. 230 ◽  
Author(s):  
A. David M. Latham ◽  
Stan Boutin
Keyword(s):  
Odocoileus Virginianus ◽  
Rangifer Tarandus ◽  
The West ◽  
West Side ◽  
Athabasca River ◽  
The Past ◽  
Large Numbers ◽  
Winter Food ◽  
Northeastern Alberta ◽  
Northern Alberta

Within the past 10 to 15 years, White-tailed Deer (Odocoileus virginianus) have extended their geographical range to include most of northern Alberta. In the boreal forest they are most abundant in well-drained upland habitat. We report the occurrence of unusually large numbers of deer seen in a large fen complex in the west side of the Athabasca River Caribou range in northeastern Alberta. Further, we report an observation that suggests that deer may be using arboreal lichen (old man’s beard; Bryoria spp. and Usnea spp.) as a winter food in this region. We discuss the potential ecological ramifications of this observation for Woodland Caribou (Rangifer tarandus caribou) in northeastern Alberta.

scholarly journals Managing Water Resources in Large River Basins

Water ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3486
Author(s):  
William Young ◽  
Nagaraja Rao Harshadeep
Keyword(s):  
Water Resources ◽  
River Basins ◽  
Large River ◽  
Large Rivers ◽  
Large River Basins

The management of water resources in large rivers basins commonly involves challenges and complexities that are not found or are less common in smaller basins [...]

scholarly journals Life Cycle of Tree Frogs (Hyla savygnyi) in Semi-Arid Habitats in Northern Israel

2015 ◽  
Vol 8 (1) ◽  
pp. 17 ◽  
Author(s):  
Gad Degani
Keyword(s):  
Life Cycle ◽  
Plasma Osmolality ◽  
Annual Rainfall ◽  
Tree Frog ◽  
Flowing Water ◽  
Breeding Sites ◽  
Hula Valley ◽  
Terrestrial Life ◽  
Tree Frogs ◽  
Semi Arid

The life cycle of tree frogs (Hyla savygnyi) in localities of various habitats in northern Israel in the Upper Galilee and Golan Heights (annual rainfall range of 500-1,000 mm) and the Hula Valley, ranging from 212 to 740 m above sea level (ASL), was studied. Tree frogs were observed around winter rain pools, springs and streams. Fifty-one different breeding places were monitored. Only ponds and springs having stable non-flowing water are used by tree frogs for reproduction and are where larvae can metamorphose. The male call in the breeding places attracts the female, who then comes to the male, and breeding occurs underwater. Breeding time in Israel varies according to location and geographical and ecological conditions. It takes place in March-April in northern Israel, the Upper Galilee, the Golan Heights and the Hula Valley. In various breeding places, larvae grow between April and June. Apparently tree frog larvae adapt to breeding places where stable water is found, such as in ponds or springs, but not to breeding places with flowing water such as streams or rivers. Various Anuran and Urodela larvae were found in the same breeding sites where the larvae of H. savygnyi were found, including Pseudepidalea Viridis, Rana bedriagae, Pelobates syriacus, Salamandra infraimmaculata and Triturs vittatus. Following metamorphosis, H. savygnyi adapt to terrestrial life in semi-arid habitats, and is found on plants or in hiding places under rocks and in holes to prevent dehydration particularly during hot and dry weather. The ability to change color helped the frogs to hide in various substrates. The rate of water loss of terrestrial H. savygnyi during dehydration is around 50% of body weight. Plasma osmolality increased from 200 mOsm/kg to about 450 mOsm/kg, which helped the tree frog to survive in semi-arid habitats.

Historical Changes in Large River Fish Assemblages of the Americas

2005 ◽  
Keyword(s):  
Fish Assemblage ◽  
Fish Assemblages ◽  
River Management ◽  
Large River ◽  
Large Rivers ◽  
Pertinent Literature ◽  
Historical Changes ◽  
Time To Learn ◽  
River Fish

<em>Abstract.</em>—This book’s objective is to document historical changes in the fish assemblages of large American rivers, and to determine patterns in and rationale for those changes. In this chapter, we review pertinent literature on large rivers and fish assemblages worldwide and briefly introduce the chapters. We expect that the information contained in this book will aid river management in general, and stimulate similar historical fish assemblage studies elsewhere. There will never be a better time to learn and understand what has been changed and to reverse or slow undesirable changes.

scholarly journals Microbiology of a northern river: bacterial distribution and relationship to suspended sediment and organic carbon

1979 ◽  
Vol 25 (9) ◽  
pp. 1058-1062 ◽  
Author(s):  
G. G. Geesey ◽  
J. W. Costerton
Keyword(s):  
Organic Carbon ◽  
Suspended Sediment ◽  
Mining Operations ◽  
Free Living ◽  
Athabasca River ◽  
Turbid Waters ◽  
Northern River ◽  
High Concentrations ◽  
Northeastern Alberta ◽  
Carbon Concentrations

Epifluorescent microscopy showed as many as 4 × 106 bacteria/mL in the turbid waters of the Athabasca River near the tar sand deposits in northeastern Alberta. The numbers were usually similar upstream and downstream (60 km) from pilot-mining operations. The majority of bacteria existed as free-living cells in spite of the fact there were high concentrations of suspended sediment present (average 220 mg/L) during the ice-free period. Fluctuations in bacterial concentration were positively correlated (r = 0.86, P < 0.05) with total organic carbon concentrations in the river water.

McMurray Formation foraminifera within the lower Albian (Lower Cretaceous) Loon River shales of northern Alberta

2007 ◽  
Vol 44 (11) ◽  
pp. 1627-1651 ◽  
Author(s):  
C R Stelck ◽  
F H Trollope ◽  
A W Norris ◽  
S G Pemberton
Keyword(s):  
Lower Cretaceous ◽  
Isotopic Analysis ◽  
Radiometric Dating ◽  
Western Canada ◽  
Fort Mcmurray ◽  
Mcmurray Formation ◽  
Peace River ◽  
Clearwater Formation ◽  
Northeastern Alberta ◽  
Northern Alberta

Early Cretaceous paleogeography and biostratigraphy of western Canada are reviewed in light of a reassessment of foraminiferal and microfloral data from unpublished university theses on the early Albian Loon River shales of the lower Peace River area of northern Alberta (Norris 1951; Trollope 1951). The Loon River Formation, once considered to be an obsolete term, comprises numerous “zones” of foraminifera, radiolarian, and algal cysts, in ascending order Rectobolivina sp., lower Radiolarian zone, lower Leiosphaeridia zone, Haplophragmoides yukonensis, upper Radiolarian zone, upper Leiosphaeridia zone, Trochammina mcmurrayensis, Valvulineria loetterlei, Haplophragmoides topagorukensis, Marginulinopsis collinsi, and Haplophragmoides gigas minor. The upper part of the Loon River Formation, from the upper Radiolarian zone onwards, correlates with the McMurray, Wabiskaw, and Clearwater formations of the Fort McMurray area of northeastern Alberta. Molluscan data from various localities in western Canada indicates that the entire Loon River succession occurred within the early Albian. The presence of Inoceramus dowlingi and Cleoniceras sp. with the Marginulinopsis collinsi microfauna permits correlation of the type Clearwater Formation and type McMurray Formation with the Moosebar Formation of northeastern Bristish Columbia. An anomalous thick sequence of Leiosphaeridia (algal cysts) beds, bounded above and below by radiolarian-bearing strata, occurs in the mid part of the Loon River shales outcropping ~40 km along the lower Peace River. The Trochammina mcmurrayensis microfauna occurs 2–3 m below Inoceramus dowlingi and 30 m above Cleoniceras sp., and above the upper Leiosphaeridia zone. The radiolarian and Leiosphaeridia beds are considered to be the offshore neritic homotaxial equivalent of deltaic strata in the upper part of the McMurray Formation. The mid and lower Loon River shales are potential oil sources for the tar of the McMurray Formation, and this is supported by recent radiometric dating of the tar by Rhenium–Osmium isotopic analysis.

scholarly journals Habitat use by caribou in northern Alberta, Canada

Rangifer ◽  
2000 ◽  
Vol 20 (2-3) ◽  
pp. 43 ◽  
Author(s):  
Richard R. Schneider ◽  
B. Wynes ◽  
S. Wasel ◽  
E. Dzus ◽  
H. Hiltz
Keyword(s):  
Habitat Use ◽  
Habitat Suitability ◽  
Habitat Mapping ◽  
Conservation Strategy ◽  
Woodland Caribou ◽  
Entire Region ◽  
Habitat Types ◽  
Northeastern Alberta ◽  
Northern Alberta

Habitat mapping and habitat supply assessment have been identified as key elements of the Alberta Woodland Caribou Conservation Strategy. Previous studies from northeastern Alberta have shown that caribou select lowland habitat types and avoid upland. The objectives of our study were to determine whether these selection patterns are consistent across all of northern Alberta and to generate a map of habitat suitability for the entire region. Our database included over 11 000 radiotelemetry locations collected over six years from caribou across northern Alberta. We also had available a recently revised map of peatlands for the entire province. We found that polygons in the peatland map containing greater than 30% bog were selected by caribou. Fens were also selected, but not as strongly as bogs. Habitat polygons containing greater than 50% non-peat were avoided. These findings were consistent among all regions studied, and among years. The proportion of caribou relocations declined exponentially with distance from polygons classified as peatlands. Based on the observed selection patterns, we reclassified the peatland map to reflect the potential suitability of habitat for caribou across northern Alberta.

scholarly journals Fauna and Distribution of Blood-Sucking Midges of the Family Simuliidae in the Territory of Russia

2018 ◽  
pp. 38-47
Author(s):  
Andrey Denisov ◽  
Elena Ivantsova ◽  
Anna Kholodenko ◽  
Elena Zaliznyak
Keyword(s):  
Domestic Animals ◽  
European Part ◽  
Deciduous Forests ◽  
Large Rivers ◽  
Forest Steppe ◽  
Taiga Zone ◽  
Flowing Water ◽  
Blood Sucking ◽  
The Family ◽  
Vast Territory

The vast majority of these midges. (Simuliidae) is the bloodsuckers of humans and domestic animals. On the vast territory of Russia and the CIS, in the steppe, forest-steppe and especially in the taiga and tundra, midges occupy one of the first places among the blood-sucking Diptera. The family of blood-sucking midges is represented in Russia by more than 300 species. There are numerous midges in the valleys of large rivers with clean fast flowing water; their number is especially high in the taiga zone – in the valleys of the large rivers of Siberia and, to a lesser extent, the European part. On the territory of Russia moshki are found everywhere, but their abundance decreases from North to South. The zone of taiga and deciduous forests is most rich in them.

The Ecology and Management of Wood in World Rivers

2003 ◽  
Keyword(s):  
Large River ◽  
Large Rivers ◽  
Biological Processes ◽  
Riparian Area ◽  
World Rivers ◽  
Temperate Climates

<em>Abstract.</em>—A large river, in relation to wood dynamics, has a width several times greater than the height of the trees in its riparian area. Large rivers undergo particular physical and biological processes related to wood that vary according to their condition (pristine or managed) and their locations in the landscape (upland area or downstream, tropical or temperate climates).

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