Stopovers of Swans (Cygnus cygnus and C. bewickii) (Anatidae, Aves) in the Agricultural Landscape of Southern Karelia during the Spring Migration

2019 ◽  
Vol 46 (10) ◽  
pp. 1250-1255
Author(s):  
A. V. Artemyev ◽  
N. V. Lapshin ◽  
S. A. Simonov
2018 ◽  
Vol 17 (2) ◽  
pp. 127-135
Author(s):  
Aleksandr V. Artemyev ◽  
◽  
Nikolai V. Lapshin ◽  
Sergey A. Simonov ◽  
◽  
...  

2011 ◽  
Vol 2 (2) ◽  
pp. 156-168 ◽  
Author(s):  
David G. Krementz ◽  
Kwasi Asante ◽  
Luke W. Naylor

Abstract We used satellite telemetry to document spring migration phenology, routes, stopover regions, and nesting sites of mallards Anas platyrhynchos marked in Arkansas during the winters of 2004–2007. Of the 143 marked mallards that migrated from Arkansas, they did so, on average, by mid-March. Mallards flew over the Missouri Ozarks and 42% made an initial stopover in Missouri, where they used areas that had larger rivers (Mississippi River, Missouri River) embedded in an agricultural landscape. From this stopover region they either migrated directly to the Prairie Pothole Region (PPR) or they migrated north to Minnesota where they either moved next to the PPR or to the north and east of the PPR. For those mallards (83%) that stopped for >1 d before entering the PPR, the average length at each stop was 12 d (SE  =  0.90 d, range  =  2–54 d). Mallards made more stopovers, made shorter migration movements, and took longer to move to the PPR in wetter than drier years. Mallards arrived in the PPR earlier in 2006 (x¯  =  30 March, SE  =  2.18 d) than in 2005 (x¯  =  7 April, SE  =  2.30 d). Females nested across nine Bird Conservation Regions. Nesting occurred most frequently in South Dakota (n  =  9). The average date when females nested was 19 April (SE  =  2.44 d, range  =  12 March–26 May). Because many mallards headed for the large river corridors in Missouri for their first stopover, this region is an important spring migration stopover of continental importance to mallards and might be considered a focal area for conservation.


2018 ◽  
Vol 15 (1) ◽  
Author(s):  
Nirmala Dorasamy ◽  
Olayemi Bakre

The majority of the South African rural populace is directly or indirectly engaged in agricultural practices to earn a livelihood. However, impediments such as climate change, water shortages, and inadequacy of institutional support have undermined these once thriving subsistence farming communities. Furthermore, poor leadership in hydrology, coupled with a lack of depth in skills at all government levels to facilitate the understanding of the importance of groundwater, has made it near impossible for subsistence farmers to benefit optimally from groundwater. The 2012 drought experienced in South Africa paralysed several subsistence farming communities in KwaZulu-Natal. To revamp subsistence farming and assist these farmers across South Africa, the Department of Water and Sanitation launched interventions, but despite the enormous resources expended, indicators (e.g. unsustainable farming practices, poor crop yield, pitiable living conditions, and poor standards of living) provide evidence that these interventions have not yielded the desired results. This paper seeks to suggest practicable interventions aimed at reducing the vulnerability of subsistence farmers in KwaZulu-Natal. The study pursued a qualitative approach in that it solicited the views of experts on groundwater and in related fields to gain an in-depth perspective. Some of the core challenges undermining the sustainability and growth of subsistence farming in the study area were found to be the inadequacy of experts on groundwater, water shortages, institutional deficiencies, lack of political will, and lack of coordination among stakeholders. Pragmatic recommendations are made to address these challenges, among other things to encourage a South African-Chinese partnership in the hydrology sector.


1996 ◽  
Vol 2 (1) ◽  
pp. 247-251 ◽  
Author(s):  
Ingunn M. Tombre ◽  
Kjell E. Erikstad ◽  
Geir W. Gabrielsen ◽  
Karl-Birger Strann ◽  
Jeffrey M. Black

2002 ◽  
Vol 4 (1) ◽  
pp. 35-75 ◽  
Author(s):  
A. V. Chistyakov ◽  
E. V. Sharkov ◽  
T. L. Grokhovskaya ◽  
O. A. Bogatikov ◽  
G. N. Muravitskaya ◽  
...  
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