The Demographic Response of Grass Species to Fire Treatments in a Guinean Savanna / K. F. Koff, A. B. N’Dri, T. Srikanthasamy [et al.]

Уровень набора: FireАльтернативный автор-лицо: Koff, K. F., Kouame Fulgence;N’Dri, A. B., Aya Brigitte;Srikanthasamy, T., Tharaniya;Lata, Zh.-K. (J.-Ch.), geochemist, Associate Professor of Tomsk Polytechnic University, 1969-, Zhan-Kristof (Jean-Christophe);Konate, S., Souleymane;Konan, M., Marcel;Barot, S., SebastienКоллективный автор (вторичный): Национальный исследовательский Томский политехнический университет, Инженерная школа природных ресурсов, Отделение геологииЯзык: английский.Страна: .Резюме или реферат: Fighting tree encroachment using fire promotes C4 perennial grasses but likely affects their demography according to the fire date during the dry season. We analyzed the impact of four fire treatments (early, middle, late and no fire) on the demography of the four dominant perennial grasses (Andropogon canaliculatus, Andropogon schirensis, Hyparrhenia diplandra and Loudetia simplex) in a Guinean savanna of West Africa (Lamto, Cote d’Ivoire). We carried out a yearly demographic monitoring of each grass individual during five years (2015–2019) on three plots by treatment and parametrized a size-classified matrix model with five circumference classes. The results showed that A. schirensis, H. diplandra and L. simplex declined (? < 1.0) under late fire and will disappear after 10 years, as did L. simplex under the middle fire. Stasis influenced the most ? values and stable class distribution was nearly achieved in all species under all treatments. The size of L. simplex should increase under early and late fires. Our results suggest that late fire is the most detrimental fire regime for grasses in this Guinean area, contrary to early and middle fires, which could be recommended to savanna managers..Примечания о наличии в документе библиографии/указателя: [References: 73 tit.].Тематика: электронный ресурс | труды учёных ТПУ | fire treatment | Guinean savanna | perennial grass | demography | population growth rate | size-classified matrix model | обработка | огонь | Гвинея | многолетние травы | демография | рост | население | матричные модели Ресурсы он-лайн:Щелкните здесь для доступа в онлайн
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[References: 73 tit.]

Fighting tree encroachment using fire promotes C4 perennial grasses but likely affects their demography according to the fire date during the dry season. We analyzed the impact of four fire treatments (early, middle, late and no fire) on the demography of the four dominant perennial grasses (Andropogon canaliculatus, Andropogon schirensis, Hyparrhenia diplandra and Loudetia simplex) in a Guinean savanna of West Africa (Lamto, Cote d’Ivoire). We carried out a yearly demographic monitoring of each grass individual during five years (2015–2019) on three plots by treatment and parametrized a size-classified matrix model with five circumference classes. The results showed that A. schirensis, H. diplandra and L. simplex declined (? < 1.0) under late fire and will disappear after 10 years, as did L. simplex under the middle fire. Stasis influenced the most ? values and stable class distribution was nearly achieved in all species under all treatments. The size of L. simplex should increase under early and late fires. Our results suggest that late fire is the most detrimental fire regime for grasses in this Guinean area, contrary to early and middle fires, which could be recommended to savanna managers.

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