scholarly journals Through the Barren Ground of North-Eastern Canada to the Arctic Coast

1903 ◽  
Vol 22 (2) ◽  
pp. 178
Author(s):  
David T. Hanbury
2010 ◽  
Vol 124 (1) ◽  
pp. 58
Author(s):  
Jean-François Therrien

A pair of Short-eared Owls was observed throughout the summer of 2008 showing territorial behavior more than 1000 km north of their known breeding range in north-eastern Canada. These observations might be related to high lemming densities and/or climate change occurring in the Arctic.


1995 ◽  
Vol 43 (2) ◽  
pp. 147-158 ◽  
Author(s):  
Anatoly V. Lozhkin ◽  
Patricia M. Anderson

AbstractAlluvial, fluvial, and organic deposits of the last interglaciation are exposed along numerous river terraces in northeast Siberia. Although chronological control is often poor, the paleobotanical data suggest range extensions of up to 1000 km for the primary tree species. These data also indicate that boreal communities of the last interglaciation were similar to modern ones in composition, but their distributions were displaced significantly to the north-northwest. Inferences about climate of this period suggest that mean July temperatures were warmer by 4 to 8°C, and seasonal precipitation was slightly greater. Mean January temperatures may have been severely cooler than today (up to 12°C) along the Arctic coast, but similar or slightly warmer than present in other areas. The direction and magnitude of change in July temperatures agree with Atmospheric General Circulation Models, but the 126,000-year-B.P. model results also suggest trends opposite to the paleobotanical data, with simulated cooler winter temperatures and drier conditions than present during the climatic optimum.


1989 ◽  
Vol 67 (10) ◽  
pp. 2392-2397 ◽  
Author(s):  
B. G. E. de March

In the absence of distribution data for juvenile broad whitefish, Coregonus nasus, laboratory experiments were designed to elucidate the salinity ranges that the species will tolerate. Larval fish (12–18 mm) died within 120 h at salinities of 12.5‰ and higher at both 5 and 10 °C, though more slowly at 5 °C. Salinities of 12.5 and 15‰, but no higher, were tolerated for 120 h at 15 °C. Larvae fed readily at 15 °C but not at 5 or 10 °C. Slightly larger and more-developed larvae (15–19 mm) were tolerant of 12.5‰ but died within 120 h at 15‰ at the same three temperatures. These fish fed more readily than the younger ones. Larger fish (33–68 mm) were generally tolerant of 15–20‰ but not of higher salinities in 120-h tolerance tests. Larger field-collected fish (27–200 mm) reacted similarly but were more tolerant of salinities between 20 and 27‰ in 96-h tests. Analysis of both experiments with larger fish suggests that time to death was inversely related to size as well as to salinity. Coregonus nasus does not seem to be more tolerant of saline conditions than other freshwater or migratory fish species. Experimental results combined with limited information about the species' distribution suggest that man-made constructions on the arctic coast might seriously affect dispersal or annual migrations.


Author(s):  
Дмитрий Николаевич Замятин

Геокультурное пространство любого региона формируется в результате взаимодействия двух слабо отделимых друг от друга элементов – геокультур, развивающихся на данной территории, и культурных ландшафтов. Полноценное развитие геокультурного пространства предполагает формирование уникальной онтологии воображения, создающей когнитивный «фундамент» для построения соответствующих моделей. Онтологические модели воображения характеризуют возможности расширенной репрезентации и интерпретации культурных ландшафтов какого-либо региона. Визуальность культурного ландшафта представляет собой сложное образование, в котором зрительные реакции и рефлексии оказываются результатом множественного воображения – одновременно и личностного, и группового. Геокультурное пространство Арктики в его визуально-дискурсивном измерении является сложным, поскольку традиция «колониального взгляда» вкупе с тенденцией к анализу постколониальных практик и к деколонизации различных арктических дискурсов создаёт амбивалентное дискурсивное поле актуальных визуальных практик и политик. Экзистенциальная ситуация постэкзотизма, типологически характерная для арктических регионов, является полем онтологизации множественных визуальных практик, закрепляющих ризоматические процедуры геокультурных различений. В результате полевого исследования прибрежных территорий Северо-Восточной Чукотки были выделены наиболее визуально интенсивные ключевые ландшафтные ассамбляжи: 1) морской охоты; 2) традиционных праздников морских охотников; 3) «первозданной» природы. Ландшафтные ассамбляжи репрезентируются теми или иными визуальными диспозитивами. Под визуальными диспозитивами понимаются устойчиво воспроизводящиеся и феноменологически фиксируемые визуальные ландшафтные (геокультурные) образы, характеризующие специфику определённых ландшафтных ассамбляжей. В результате проведённого исследования выделено пять ключевых визуальных диспозитивов, обусловливающих специфические формы воспроизводства и развития как самих геокультур, так и соответствующих культурных ландшафтов данных территорий: 1) диспозитив морских охотников, наиболее пограничный и фрактальный; 2) диспозитив праздников традиционной культуры морских охотников; 3) диспозитив разрушения и руинирования, связанный как с экстремальными природными условиями региона, так и с эпохой советского и постсоветского развития; 4) диспозитив «природного», «первозданного» пространства, связанный с низкой освоенностью территории; и 5) диспозитив мультинатурализма, проявляющийся в особенностях визуальных сред чукотских поселений (сел, поселков городского типа, небольшого города). Эти диспозитивы, переплетаясь и взаимодействуя между собой, создают множественные, постоянно трансформирующиеся ландшафтные ассамбляжи. В рамках представленных визуальных диспозитивов формируются феномены арктического постэкзотизма и внутреннего экзотизма, фиксирующие невозможность возвращения к доколониальной «ландшафтной оптике». The geocultural space of any region is formed as a result of the interaction of two weakly separable elements – geocultures developing in the given territory and cultural landscapes. The full development of a geocultural space involves the formation of a unique ontology of imagination, which creates a cognitive “foundation” for the construction of appropriate models. Ontological models of imagination characterize the possibilities of an expanded representation and interpretation of the cultural landscapes of a region. The visuality of a cultural landscape is a complex formation in which visual reactions and reflections are the result of multiple imaginations – both personal and group. The geocultural space of the Arctic, in its visual-discursive dimension, is complex, since the tradition of the “colonial view”, coupled with the tendencies to analyze postcolonial practices and to decolonize various Arctic discourses, creates an ambivalent discursive field of relevant visual practices and policies. The existential situation of post-exoticism, typologically characteristic of the Arctic regions, is a field of ontologization of multiple visual practices that consolidate rhizomatic procedures of geocultural distinctions. As a result of a field study of the coastal territories of North-Eastern Chukotka, the most visually intensive key landscape assemblages have been identified: 1) sea hunting, 2) traditional holidays of sea hunters, 3) “pristine” nature. Landscape assemblages are represented by various visual dispositives. Visual dispositives are understood as consistently reproducing and phenomenologically fixed visual landscape (geocultural) images that characterize the specifics of certain landscape assemblages. As a result of the study, five key visual dispositives have been identified that determine the specific forms of the reproduction and development of both geo-cultures themselves and the corresponding cultural landscapes of these territories: 1) the dispositive of sea hunters, the most borderline and fractal; 2) the dispositive of holidays of the traditional culture of sea hunters; 3) the dispositive of destruction and ruin associated with both the extreme natural conditions of the region and the era of the Soviet and post-Soviet development; 4) the dispositive of the “natural”, “pristine” space associated with the low development of the territory, and 5) the dispositive of multi-naturalism, manifested in the features of the visual environments of Chukchi settlements (villages, urban-type settlements, small towns). These dispositives, intertwining and interacting, create multiple, constantly transforming landscape assemblages. Within the framework of the presented visual dispositives, the phenomena of Arctic post-exoticism and internal exoticism are formed, which fix the impossibility of returning to the pre-colonial “landscape optics”.


Author(s):  
Susan Green ◽  
Dr. Michael Krop

Photographic surveys have been used since the early 1940’s to document coastlines, fuel supplies and river courses. The US Navy, post world war II, flew over the Arctic coast to document possible locations for oil extraction. These very same photos are now being utilized to compare changes in tundra vegetation at the same locations today. John Muirs’ photos of Glacier Bay are a startling testament to the melted glaciers no longer visible from the same vantage point in present times. Taking photographs to monitor change may not tell the entire story behind a change in landscape. However, photos taken over a number of years from the same vantage points, can help monitor landscape changes due to habitat fragmentation, global warming, forest fire, cattle grazing and other land management issues. Photo monitoring is inexpensive, simple and can portray change to many different groups. Of course, photos taken to reveal change must start with documenting current or normal conditions. This is sometimes called baseline monitoring. The park ranger in Glacier National Park did not realize when he took his picture of the Grinnell glacier in 1911 that his photo would become an alarming baseline photo for evidence of global warming. The purpose of this project was to document the Snake River headwater basin and its riparian zones as a document in time for future reference. The original documentation included 48 images of two main headwater areas; the Shoshone and Lewis Lake areas and the Fox Park-Two Ocean Bear Management Areas near the Yellowstone Park border. Since the Shoshone-Lewis lakes are easily assessable and photo space here is limited, I have chosen to only use photos from the more remote areas.


The Auk ◽  
2001 ◽  
Vol 118 (4) ◽  
pp. 1088-1095 ◽  
Author(s):  
James S. Sedinger ◽  
Mark P. Herzog ◽  
Brian T. Person ◽  
Morgan T. Kirk ◽  
Tim Obritchkewitch ◽  
...  

AbstractWe examined variation in growth of Black Brant (Branta bernicla nigricans) goslings among two colonies on the Yukon-Kuskokwim Delta in southwestern Alaska and the Colville River Delta on Alaska's Arctic coast. We simultaneously measured abundance and quality of a key food plant, Carex subspathacea, and grazing pressure on that plant at the three colonies. Our goal was to measure variation in gosling growth in relation to variation in grazing pressure and food abundance because growth of goslings is directly linked to first-year survival, and consequently is the principal mechanism for density-dependent population regulation. Goslings grew substantially faster on the arctic coast and were nearly 30% larger than those on the Yukon-Kuskokwim Delta at four to five weeks old. Faster growth on the arctic coast was associated with 2× greater standing crop of C. subspathacea during brood rearing than on the Yukon-Kuskokwim Delta. Dispersal rates are high enough (Lindberg et al. 1998) to rule out local adaptation and genetic variation as explanations for observed variation in growth. Our results are consistent with lower survival of goslings from the Yukon-Kuskokwim Delta during their first fall migration and stronger density-dependent regulation on the Yukon-Kuskokwim Delta than on the Arctic coast.


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