Zobrazeno 1 - 10
of 1 218
pro vyhledávání: '"Population dynamic"'
Autor:
Erling Hauge
Publikováno v:
Fauna Norvegica, Vol 20 (2024)
Square samples were taken at intervals of 3 - 4 weeks (early spring 1972 - late summer 1973) in a heterogenous plant association dominated by Calluna vulgaris and several moss species (Loc.I), and in a homogenous, humid Sphagnum mat (Loc.II) with ver
Externí odkaz:
https://doaj.org/article/31e725b89ea445d9be90f82b98fecc99
Autor:
Robert T. Barrett
Publikováno v:
Fauna Norvegica, Vol 23 (2024)
Surveys of seabirds breeding along the coast of Sør-Varanger, NE Norway were carried out in 1989, 1996, 1999 and 2002 as a continuation of a monitoring study started in 1970. Until 1983, by which time 47 colonies were occupied, there had been a rapi
Externí odkaz:
https://doaj.org/article/4a94c58a464147d48b0bd2520202bec0
Autor:
Diego Caratelli, Paolo Emilio Ricci
Publikováno v:
Mathematical Modelling and Analysis, Vol 29, Iss 3 (2024)
The fractional exponential function is considered. General expansions in fractional powers are used to solve fractional population dynamics problems. Laguerretype exponentials are also considered, and an application to Laguerre-type fractional logist
Externí odkaz:
https://doaj.org/article/21d1089e969c45dfb67247939485c189
Publikováno v:
AGRIVITA Journal of Agricultural Science, Vol 46, Iss 1, Pp 1-14 (2024)
Fruit flies are an economic important of pest on horticultural crops. One of the commodities that are affected much due to fruit fly attack is salacca var. pondoh. The number of fruit flies attacking salacca increased from 2018 to 2021. The aims of t
Externí odkaz:
https://doaj.org/article/2ff93d15b22547b696c007a3dd1df723
Autor:
Yue Man, Delu Li, Minghui Wang, Zuqing Hu, Jean-Luc Gatti, Nicolas Desneux, Peng Han, Chen Luo
Publikováno v:
CABI Agriculture and Bioscience, Vol 4, Iss 1, Pp 1-9 (2023)
Abstract Background Aphids often harbor bacterial symbionts that confer resistance to biotic and abiotic stress. Previous studies have primarily examined the direct effects of symbiont infection on parasitoid success but less on aphid population dyna
Externí odkaz:
https://doaj.org/article/1e86b1b4d92c470e85ece1f88eed3814
Publikováno v:
Mathematical Biosciences and Engineering, Vol 20, Iss 9, Pp 17220-17241 (2023)
To address the issues with inadequate search space, sluggish convergence and easy fall into local optimality during iteration of the sparrow search algorithm (SSA), a multi-strategy improved sparrow search algorithm (ISSA), is developed. First, the p
Externí odkaz:
https://doaj.org/article/a5af937d4206489ca5ad8a24149c2767
Publikováno v:
Frontiers in Agronomy, Vol 6 (2024)
IntroductionCompetition by weeds is a severe threat to agricultural crops. While these days the broadcast of herbicides over the entire field is common praxis, new technologies promise to reduce chemical output by reducing the area sprayed. The maxim
Externí odkaz:
https://doaj.org/article/154e6c1ab4cc4d2b960b1adb7b53cc2d
Publikováno v:
SAR Journal - Science and Research. 6(1):23-27
Externí odkaz:
https://www.ceeol.com/search/article-detail?id=1107390
Autor:
Mi Tian, Xinran Ke, Ming Li, Kaixuan Deng, Yong Yang, Zanshan Fang, Cairong Zhong, Shen Li, Zhengjie Zhu, Nora Fung-Yee Tam, Tao Lang, Haichao Zhou
Publikováno v:
Forests, Vol 15, Iss 5, p 865 (2024)
In China, Dolichandrone spathacea is a rare and endangered semi-mangrove plant species with an extremely small population, naturally distributed only in Zhanjiang City and the east coast of Hainan Island. Despite conservation concerns, the population
Externí odkaz:
https://doaj.org/article/58f48b4ea92f45ab8baae5a447c705ea