Radiotelemetry study of dynamics of spatial activity in red  deer (Cervus elaphus) populated  in the reserve „Plaiul Fagului“
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SAVIN, Anatolie, CAISÎN, Valeriu, NISTREANU, Victoria, SYTNIC, Veaceslav, LARION, Alina. Radiotelemetry study of dynamics of spatial activity in red  deer (Cervus elaphus) populated  in the reserve „Plaiul Fagului“. In: Sustainable use, protection of animal world and forest management in the context of climate change, 12-13 octombrie 2016, Chișinău. Chișinău: Institutul de Zoologie, 2016, Ediția 9, pp. 273-274. ISBN 978-9975-3022-7-2. DOI: https://doi.org/10.53937/9789975302272.140
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Sustainable use, protection of animal world and forest management in the context of climate change
Ediția 9, 2016
Conferința "Sustainable use, protection of animal world and forest management in the context of climate change"
Chișinău, Moldova, 12-13 octombrie 2016

Radiotelemetry study of dynamics of spatial activity in red  deer (Cervus elaphus) populated  in the reserve „Plaiul Fagului“

DOI: https://doi.org/10.53937/9789975302272.140

Pag. 273-274

Savin Anatolie, Caisîn Valeriu, Nistreanu Victoria, Sytnic Veaceslav, Larion Alina
 
Institute of Zoology ASM
 
Proiecte:
 
Disponibil în IBN: 16 noiembrie 2018



Teza

Radiotelemetry method of VHF (Very High Frequency) type enable to determine in the conditions of forest ecosystems the spatial activity of individuals marked in minimum visibility conditions and hidden way of life of animals, along with the possibility of visual study of specimens activity. The method is relatively inexpensive, information obtained has satisfactory precision for most studies, the duration of the device working is long, and the method applicable to any vertebrate species, the disadvantage being only linked to the heavy work in the field. In addition to the information on the position and movements of the animal, this method is also suitable for getting other data (Mech and Barber, 2002). The purpose of the researches was the study of adaptation of red deer released in the reserve from reproduction enclosures into local populations and spatial parameters of territorial activity in the accommodation process. The red deer (Cervus elaphus) – three male individuals with the age between 3 and 7 years old were released from the reproduction enclosure “Telenești” in scientific reserve „Plaiul Fagului“ (plot 24), on two of which were mounted collars with transmitters HLPM-3140, produced by the company Wildlife Materials Inc., with a guaranteed activity period of 380 days. For the location of specimens receivers TRX-16S from the same company were used, mounted on directed antennas of type “channel modulator” using triangulation method. In determining a location for deer at least three directions of radio signal reception are required, the points spaced at 200-600 meters, depending on the distance to the object. The intersection of these lines indicate the location of the animal, with precision ranging between a few tens and sometimes up to 300-500 meters in the conditions of the Reserve “Plaiul Fagului”. Radiotransmitter activity permitted the investigation of the marked individuals during February 2014 February 2016, the collars’ transmitter is still working. The first red deer male with age of 7 years old was released on February, 13, 2014 and marked with the transmitter on channel 14. The other two males of 3 years old were released on the same plot 15 days later, one being marked on channel 13. In the process of adaptation to the new conditions the males selected the feeding area (pl.18), at a distance of 700-800 m from the release place, where there was a supply of hay, concentrates and minerals. During this period the individuals were displaced solitary and exploited each an area of about 35-40 hectares with daytime movements up to 300-350 m. After a 3-4 week accommodation period it was observed marked males’ inclusion within local groups of red deer. At the same time, toward the vegetation period (March) spatial redeployment of these groups occurs with their fragmentation into smaller groups (3-4 individuals). In late March the male marked on channel 14 was located to the west, in a group of 4 individuals (2 females and 2 males) at a distance of about 2500 m (plots 27, 35, 36) from the “accommodation zone”. This shift was registered in daytime activity period during 8 hours. In April in male on channel 14 it was reported a leaving from the seasonal activity zone of about 300-350 hectares in open ground (grove island), at a distance of 4500 meters, crossing an area with old orchards, fallow and cultivated lands, being recorded on the seasonal activity sector (pl. 27, 35, 36) after 7 days. The second male marked on channel 13 moved during this period at the eastern extremity of the reserve in plots 6-8 at a distance of 1200-1600 m from „accommodation area”, remaining here from April to September, on an area of about 300 ha. In April - May period of 2014-2015 the individuals had a diurnal sector of 60-80 ha with its increase in June to 100-120 ha. Also, by early summer, a trend of selection of preferred trophic areas was observed, mostly at the ecotone: forest edge and nearby orchards grown with acacia. For resting the males retire in shrubs from lower area of the slopes with northern exposure, moving inside the forest at 900-1400 m. By autumn (years 2014, 2015) and the beginning of reproductive period the males retire in wet areas of the lakes (pl. 29, 24, 17, 18), where they have a diurnal activity within an area of about 100-150 ha. It was found that during mating season both males occupied sectors situated far away from activity areas of resident males. In the winter of 2014 - 2015 and 2015-2016 the males were found in feeding area: plots 16, 17, 18 (channel 13) and plots 24, 29 (channel 14) in ecotone zone limited by meadow from lake area, where the altitude do not exceed 180-200 m. it should be noted that in spring of 2015 the males remained longer time period in refuge areas (up to end of April) unlike the same period of the last year, when red deer dispersed towards areas with higher elevations (270-380m) within the forest. During the summer of 2015 the males also moved to northern (C.13) and southwestern extremities of the reserve (C.14), where they find trophic resources in the morning hours in areas of ecotone with agricultural fields. In conclusion it must be mentioned that red deer males released in the reserve “Plaiul Fagului” used annually on average over the study years 2014-2016 an area of about 500-700 ha, using sectors of 200-400 hectares – larger in spring-summer (300-400ha) and smaller in winter (200-250 ha). The territory of diurnal activity ranged between 80 ha (autumn-winter) and 150 ha (spring-summer). During summer the males moved to northern (C.13) and southwestern extremities of the reserve (C.14), where they find trophic resources in the morning hours in areas of ecotone with agricultural fields. The work was performed within the fundamental project 15.187.0211F.