Long Term Management of Rhizomania Disease—Insight Into the Changes of the Beet necrotic yellow vein virus RNA-3 Observed Under Resistant and Non-resistant Sugar Beet Fields

State of artificially-established stands of introduced conifers on the site of sessile oak in MU "Cer-Vidojevica"

Sustainable Forestry: Collection ◽

10.5937/sustfor1571063s ◽

2015 ◽

pp. 63-75

Author(s):

Branka Spasojević ◽

Vlado Čokeša ◽

Đorđe Jović

Keyword(s):

Basal Area ◽

Douglas Fir ◽

Main Task ◽

White Pine ◽

Short Term ◽

Sessile Oak ◽

Diameter Structure ◽

Term Management ◽

Insight Into

The paper presents the results of a study on the state of artificially established stands of Douglas-fir and white pine on the site of sessile oak with hornbeam (Querco-Carpinetum moesiacum Rud. 1945), in Podrinje-Kolubara forest area in MU 'Cer-Vidojevica'. The stands of Douglas-fir and white pine are 51 years. The main task of the paper was to examine extensive data on forest estimation elements obtained from the measurements carried out on the selected sample plots in order get a deeper insight into the structure (diameter structure, distribution of basal area, volume, height curve) and productivity (volume and volume increment) of the stands. With the aim of achieving comparability of the results, one sample plot was established in a 70-year old indigenous coppice stand of sessile oak. The knowledge of these characteristics will provide better understanding of the issues of forest management in these artificially-established stands and help define short-term and long-term management goals and measures for their implementation.

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First observations of young of the year and juvenile great white sharks (Carcharodon carcharias) scavenging from a whale carcass

Marine and Freshwater Research ◽

10.1071/mf07223 ◽

2008 ◽

Vol 59 (7) ◽

pp. 596 ◽

Cited By ~ 39

Author(s):

M. L. Dicken

Keyword(s):

South Africa ◽

Foraging Behaviour ◽

Scientific Literature ◽

Carcharodon Carcharias ◽

Great White Shark ◽

Young Of The Year ◽

Management And Conservation ◽

Term Management ◽

Insight Into

Observations of great white sharks (Carcharodon carcharias) scavenging from cetacean carcasses are rare and have only been reported in the scientific literature for large (>3.5 m total length (TL)) individuals. Between 13 October and 25 November 2006, young of the year and juvenile great white sharks were observed scavenging from the carcass of a humpback whale (Megaptera novaeangliae) in Algoa Bay, South Africa. Although more than one shark scavenged from the carcass, simultaneous feeding was not observed. The sharks showed a clear preference for soft tissue at sites along the mouth of the carcass. Protective ocular rotation was rarely observed and none of the sharks exhibited palatoquadrate protrusion while feeding. These observations provide a new insight into the foraging behaviour of young of the year and juvenile great white sharks. The prevalence of small great white sharks (1.5 m TL) and the absence of any individuals greater than 3.65 m TL suggest that Algoa Bay may function as a nursery area for great white sharks in South Africa. This information is crucial not only to improve our understanding of great white shark biology, but also for their long-term management and conservation in South Africa.

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