Dendroindication of Retrospective Larch Defoliation
We propose a method for dating of growth seasons of Siberian larch (Larix sibirica Ledeb.) following insect infestation events and defoliation. Needle damage during the growth phase triggers tree investment into additional growth of brachyblasts within the same season. Dissecting brachyblasts allows...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Siberian Federal University
2018-09-01
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| Series: | Журнал Сибирского федерального университета: Серия Биология |
| Subjects: | |
| Online Access: | http://elib.sfu-kras.ru/bitstream/2311/71055/1/07_Morozova.pdf |
| _version_ | 1811324535660609536 |
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| author | Tatyana I. Morozova Viktor I. Voronin |
| author_facet | Tatyana I. Morozova Viktor I. Voronin |
| author_sort | Tatyana I. Morozova |
| collection | DOAJ |
| description | We propose a method for dating of growth seasons of Siberian larch (Larix sibirica Ledeb.) following insect infestation events and defoliation. Needle damage during the growth phase triggers tree investment into additional growth of brachyblasts within the same season. Dissecting brachyblasts allows the identification of these secondary growth events. We tested this method in the Baikal region, East Siberia, in larch forest sites infested by the gypsy moth (Lymantria dispar L.) from 1997 to 2000. Defoliation of trees due to the infestation was highest in 1997 (63%) and decreased gradually to 46% in 1998, 50% in 1999 and 35% in 2000. During the period of the Lymantria dispar outbreak some brachyblasts had needles reduced by four times after defoliation. The proposed method allows retrospective identification of years of larch canopy damage and defoliation not only by insects, but also fungi or toxic gases in the case of early summer and summer defoliation. Wintering buds are already formed during this period, so defoliation and elimination of its inhibiting impact (power) on the growth of wintering buds results in their fast regeneration |
| first_indexed | 2024-04-13T14:16:08Z |
| format | Article |
| id | doaj.art-195dc1af52b14efbba5f0836e581d686 |
| institution | Directory Open Access Journal |
| issn | 1997-1389 2313-5530 |
| language | English |
| last_indexed | 2024-04-13T14:16:08Z |
| publishDate | 2018-09-01 |
| publisher | Siberian Federal University |
| record_format | Article |
| series | Журнал Сибирского федерального университета: Серия Биология |
| spelling | doaj.art-195dc1af52b14efbba5f0836e581d6862022-12-22T02:43:38ZengSiberian Federal UniversityЖурнал Сибирского федерального университета: Серия Биология1997-13892313-55302018-09-01113275284http://elib.sfu-kras.ru/handle/2311/71055Dendroindication of Retrospective Larch DefoliationTatyana I. Morozova0Viktor I. Voronin1Siberian Institute of Plant Physiology and Biochemistry SB RAS 123 Lermontov Str., Irkutsk, 664033, RussiaSiberian Institute of Plant Phуsiology and Biochemistry of SB RAS 132 Lermontov Str., Irkutsk, 664033, RussiaWe propose a method for dating of growth seasons of Siberian larch (Larix sibirica Ledeb.) following insect infestation events and defoliation. Needle damage during the growth phase triggers tree investment into additional growth of brachyblasts within the same season. Dissecting brachyblasts allows the identification of these secondary growth events. We tested this method in the Baikal region, East Siberia, in larch forest sites infested by the gypsy moth (Lymantria dispar L.) from 1997 to 2000. Defoliation of trees due to the infestation was highest in 1997 (63%) and decreased gradually to 46% in 1998, 50% in 1999 and 35% in 2000. During the period of the Lymantria dispar outbreak some brachyblasts had needles reduced by four times after defoliation. The proposed method allows retrospective identification of years of larch canopy damage and defoliation not only by insects, but also fungi or toxic gases in the case of early summer and summer defoliation. Wintering buds are already formed during this period, so defoliation and elimination of its inhibiting impact (power) on the growth of wintering buds results in their fast regenerationhttp://elib.sfu-kras.ru/bitstream/2311/71055/1/07_Morozova.pdfSiberian larchdefoliationradial and brachiblasts increment |
| spellingShingle | Tatyana I. Morozova Viktor I. Voronin Dendroindication of Retrospective Larch Defoliation Журнал Сибирского федерального университета: Серия Биология Siberian larch defoliation radial and brachiblasts increment |
| title | Dendroindication of Retrospective Larch Defoliation |
| title_full | Dendroindication of Retrospective Larch Defoliation |
| title_fullStr | Dendroindication of Retrospective Larch Defoliation |
| title_full_unstemmed | Dendroindication of Retrospective Larch Defoliation |
| title_short | Dendroindication of Retrospective Larch Defoliation |
| title_sort | dendroindication of retrospective larch defoliation |
| topic | Siberian larch defoliation radial and brachiblasts increment |
| url | http://elib.sfu-kras.ru/bitstream/2311/71055/1/07_Morozova.pdf |
| work_keys_str_mv | AT tatyanaimorozova dendroindicationofretrospectivelarchdefoliation AT viktorivoronin dendroindicationofretrospectivelarchdefoliation |