scholarly journals Recent changes in summer distribution and numbers of migratory caribou on the southern Hudson Bay coast

Rangifer ◽  
2012 ◽  
pp. 269-276 ◽  
Author(s):  
Kenneth F. Abraham ◽  
Bruce A. Pond ◽  
Susan M. Tully ◽  
Vicki Trim ◽  
Daryll Hedman ◽  
...  

The status of migratory woodland caribou inhabiting the coastal region in southern Hudson Bay is dynamic. The Pen Islands Herd within that region was defined in the 1990s, but opportunistic observations between 1999 and 2007 suggested that its status had significantly changed since the late 1980s and early 1990s. We undertook systematic surveys from the Hayes River, MB, to the Lakitusaki River, ON, in 2008 and 2009 to determine current distribution and minimum numbers of woodland caribou on the southern Hudson Bay coast from the Hayes River, Manitoba, to the Lakitusaki River, Ontario. We documented a significant change in summer distribution during the historical peak aggregation period (7-15 July) compared to the 1990s. In 2008 and 2009, respectively, we tallied 3529 and 3304 animals; however, fewer than 180 caribou were observed each year in the Pen Islands Herd’s former summer range where over 10 798 caribou were observed during a systematic survey in 1994. Over 80% of caribou were in the Cape Henrietta Maria area of Ontario. Calf proportions in herds varied from 8% of animals in the west to 20% in the east. Our 2008 and 2009 systematic surveys were focused on the immediate coast, but one exploratory flight inland suggested that more caribou may be inland than had been observed in the 1980s-1990s. The causes of change in the numbers and distribution in the coastal Hudson Bay Lowlands and the association of current caribou with the formerly large Pen Islands Herd may be difficult to determine because of gaps in monitoring, but satellite telemetry, genetic sampling, remote sensing, habitat analysis, and aboriginal knowledge are all being used to pursue answers.

Rangifer ◽  
1998 ◽  
Vol 18 (5) ◽  
pp. 99 ◽  
Author(s):  
Harold G. Cumming

Over 20 000 woodland caribou were reported in Ontario during 1966, the highest figure ever published. Photographic counts of the Pen Islands herd, bordering Manitoba, have shown constant increases from 2300 in 1979 to 10 800 in 1994. Elsewhere in Ontario, estimates have been declining, from 13 000 in 1965 to 11 000 in 1989 to under 10 000 in 1996, a trend that may or may not be real because of differing survey methods. On the Hudson Bay Lowlands (excluding the Pen Islands caribou) 8600 were reported in 1965, 7200 in 1989, 5500 in 1996, an apparent decline. The transitional forest populations has remained stable. Estimated caribou numbers inhabiting the true boreal forest have dropped from nearly 4000 in 1965 to 2700 in 1996, but this decrease was not confirmed by careful within-district breakdowns of sub-populations by habitat types and may be an artifact of classification from districts to regions. The sharpest decrease was reported for the Central Region, north east of Lake Superior, where estimates dropped from 500 in 1965 to 475 in 1989 and to 68 in 1996. Individual caribou bands approach recognized minimum numbers for isolated populations, and even totals by sub-population remain low: over 1300 in commercial forests, about 500 in potentially commercial forests, and 8-900 in parks. Due to small numbers in widely dispersed band-locations, the potential for human disturbance affecting these forest dwelling caribou is substantial.


2019 ◽  
Vol IV (II) ◽  
pp. 56-66
Author(s):  
Fakhr Ul Munir ◽  
SanaUllah ◽  
Anila

India and China are the world's fast mounting economies influencing global politics affecting 2.5 billion of their subjects via their policies. Both states account for one-fifth of the total populace of the globe. Asia's overall progress, peace, prosperity and stability is directly influenced by the relations of these two Asian competitors. It is anticipated that by 2025, these states would be world's economies. However, bilateral disputes and enmity wield greater regional and global implications, which are intensely required to be resolved for the best and prosperous future. One of the most crucial aspects aggravating Sino-Indian relations is the asylum given to Dalai Lama and the status of Tibet. China has been assisting Pakistan economically and technically to build Gwadar Port, supporting Sri Lankan northern Hambantota Port, extending sustenance to Bangladesh's Chittagong Port, and furthering support to the Myanmar Port lying at the coastal region of the Indian Ocean. However, the strained relations for decades between India and China had given little space for healthy trade, increasing from 3 billion $ in 2000 to 20 billion $ in 2010.


1951 ◽  
Vol 32 (3) ◽  
pp. 329 ◽  
Author(s):  
A. de Vos ◽  
Randolph L. Peterson
Keyword(s):  

1984 ◽  
Vol 54 (2) ◽  
pp. 178-184
Author(s):  
Dirk Platvoet

Samples from wells in the coastal region of the département Var (France), from Mallorca and from a cave in Formentera (Balearic islands) contained among other amphipods species belonging to the genus Salentinella Ruffo; the status of the specimens from Var and from Mallorca is discussed. Salentinella formenterae n. sp. is described from Formentera and some remarks on the discriminating features used within the genus are given.


Author(s):  
Victor PH Nikijuluw

Blessed with vast coastal region, Indonesia has developed its economy by better utilizing the available resources therein. The coastal region, consisting of about 81,000 km shoreline and more than 17,000 small islands, has provided huge contribution to the national economy and served as the solid basis for various human activities. The region and its resources should be sustainably available and existed to support the country’s future economic development. Nevertheless there is a serious concern for its future, particularly regarding the status of the resources which essentially are the important life supporting system. The main coastal ecosystems that constitute Indonesian coastal region are mangrove forest, seagrass meadow, and coral reefs. Variety of goods and services are produced by these coastal ecosystems. Some of the goods and services are exploitable, usable, marketable, tradable, and highly priced. Some other goods and services, however, are remained unidentified, non-quantified, non-tradable, and unable to be monetized by using the existing technologies and market mechanisms. Consequently, the resources tend be underestimated and undervalued and eventually misused and mismanaged.


2012 ◽  
Vol 13 (2) ◽  
pp. 105 ◽  
Author(s):  
Tahril Tahril ◽  
Paulina Taba ◽  
Nursiah La Nafie ◽  
Alfian Noor

The objectives of the study are to describe the iron content of seagrass area ecosystem and its relation with nature of physico-chemical territorial water. The sampling of seagrass was conducted in purposive sampling technique for every status of the field and performed in three spots of the seagrass ecosystem region with reference to the depth of water and the current direction. Based on statistical tests of factorial and variance analysis indicate that the quality of physico-chemical territorial water in the coastal region of Donggala regency still very good, relatively. The result also showed, The Demand Oxygen and the turbidity gave a positive effect to Fe- seagrass improvement in its various association. Besides, the limiting factor for the low of Fe-seagrass is the height of salinity and water temperature. If the results were combined with another micro and macro mineral analysis will to become the basic for estimating the status of seagrass fertility.


Rangifer ◽  
2005 ◽  
Vol 25 (4) ◽  
pp. 105 ◽  
Author(s):  
Audrey J. Magoun ◽  
Kenneth F. Abraham ◽  
John E. Thompson ◽  
Justina C. Ray ◽  
Michel E. Gauthier ◽  
...  

To determine past distribution and relative abundance of caribou (Rangifer tarandus caribou) in the Hudson Plains Ecozone (HPE) of Ontario, we reviewed past HPE-wide winter systematic aerial surveys, partial winter systematic surveys, summer photographic surveys, incidental observations of caribou, and other sources of information from the period 1950—2003. We conducted new HPE-wide aerial surveys in February 2003 and 2004 to evaluate current distribution patterns. From this information, we defined 9 core wintering areas in the HPE and differentiated between 3 catego¬ries of relative abundance. Wintering areas for the January—March period have changed relatively little over the past 45 years. Summer distribution of caribou along the Hudson Bay coast apparently shifted or expanded from the area west of the Severn River to the central and eastern portions of the coast since the 1980s, and caribou observations have become much more common in the area east of the Winisk River since 1998. Because major resource development activities in the HPE are proposed and some are imminent, we recommend additional caribou surveys to document current caribou population identity, size, and distribution, and research projects to better define caribou wintering areas, calving areas, and movement patterns in the HPE.


Rangifer ◽  
1998 ◽  
Vol 18 (5) ◽  
pp. 33 ◽  
Author(s):  
Kenneth F. Abraham ◽  
John E. Thompson

In this paper, we describe the Pen Islands Herd of caribou, the largest aggregation of caribou in Ontario (it also occupies a portion of northeastern Manitoba). Photographic counts showed the herd had a minimum population of 2300 in 1979, 4660 in 1986, 7424 in 1987 and 10 798 in 1994. Throughout the 1980s, the Pen Islands caribou exhibited population behaviour similar to migratory barren-ground caribou herds, although morphology suggests they are woodland caribou or possibly a mixture of subspecies. The herd had well-defined traditional tundra calving grounds, formed nursery groups and large mobile post-calving aggregations, and migrated over 400 km between tundra summer habitats and boreal forest winter habitats. Its migration took it into three Canadian jurisdictions (Ontario, Manitoba, Northwest Territories) and it was important to residents of both Manitoba and Ontario. It is clear that the herd should be managed as a migratory herd and the critical importance of both the coastal and variable large winter ranges should be noted in ensuring the herd's habitat needs are secure.


1993 ◽  
Vol 71 (3) ◽  
pp. 487-493 ◽  
Author(s):  
Tony E. Chubbs ◽  
Lloyd B. Keith ◽  
Shane P. Mahoney ◽  
Michael J. McGrath

Movements, sex and age structure, and habitat selection of adult woodland caribou (Rangifer tarandus caribou) were examined in relation to clear-cutting on summer range in east-central Newfoundland during 1987 – 1990. We obtained 2473 locations of 35 radio-collared caribou during at least two consecutive summers. Locations relative to clearcuts were determined for eight males and 27 females. Distances to existing clearcuts were compared with distances to those same geographic points prior to and following the summer in which clear-cutting occurred. Four males and 10 females maintained similar mean distances from clearcuts, 3 males and 12 females were farther away, and 2 females were closer. Three other females and one male were assumed to be too distant to be affected by clear-cutting. Of those found farther away from clearcuts, females were 2 – 3 times farther away than males. Among female caribou that maintained similar mean distances to clearcuts, habitat use during clear-cutting was similar to that before and afterwards. Females displaced by clear-cutting avoided open burns and hardwoods and selected mature black-spruce forest, whereas prior to cutting they used habitats in proportion to their availability. Sex and age ratios indicated that significantly fewer females and calves were present near clearcuts than elsewhere in the study area. Our results demonstrate that clear-cutting mature forests on summer range may affect the movements and distribution of woodland caribou.


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