肯尼亚热带稀树草原景观中离散植被组合的植物防御特征

IF 1 4区环境科学与生态学 Q4 ECOLOGY

Journal of Tropical Ecology Pub Date : 2023-05-26 DOI:10.1017/S0266467423000123

J. M. Kimeu, G. Mwachala, D. Hattas, T. Reichgelt, A. M. Muasya

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引用次数: 0

摘要

摘要据称，木本植物对草食性植物的结构防御和化学防御之间的权衡取决于非洲稀树草原的土壤因素。我们研究了东非热带草原景观中肥沃和贫瘠土壤的土壤马赛克中的抗草食性特征，以阐明非洲热带草原木本植物中草食性防御特征的表达。我们使用了来自8个地点的8个物种的81种植物的数据，其中4个地点来自肥沃的土壤（42种植物），另外4个地点位于贫瘠的土壤（39种植物）。在我们的数据中，我们没有发现结构策略和化学策略之间的普遍差异。相反，我们发现了一系列防御特征的组合。我们的研究结果强调，在非洲稀树草原的木本植物中，化学防御和结构防御可以相互增强，而不一定是折衷的。食草动物的多样性，从昆虫到中浏览器，可能推动了非洲大草原多种防御策略的演变。

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Plant defence traits among discrete vegetation assemblages in a mesic savanna landscape in Kenya

Abstract A trade-off between structural and chemical defences against herbivory in woody plants is alleged to depend on edaphic factors in African savannas. We studied anti-herbivory traits, in an edaphic mosaic of fertile and infertile soils within a savanna landscape in East Africa, towards elucidating herbivory defence traits expressions in woody plants of African savannas. We used data of 81 plants for 8 species from 8 sites — four sites from fertile soils (42 plants) and another four sites from infertile soils (39 plants). We did not find a general divide between structural and chemical strategies in our data. Instead, we found a range of defence traits combinations. Our results highlight that in woody plants of African savannas, chemical and structural defences can augment each other, and not necessarily trade-off. The diversity of herbivores, ranging from insects to mesobrowsers, may have driven the evolution of multiple defence strategies within the African savannas.

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来源期刊

Journal of Tropical Ecology 环境科学-生态学

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

18-36 weeks

期刊介绍： Journal of Tropical Ecology aims to address topics of general relevance and significance to tropical ecology. This includes sub-disciplines of ecology, such as conservation biology, evolutionary ecology, marine ecology, microbial ecology, molecular ecology, quantitative ecology, etc. Studies in the field of tropical medicine, specifically where it involves ecological surroundings (e.g., zoonotic or vector-borne disease ecology), are also suitable. We also welcome methods papers, provided that the techniques are well-described and are of broad general utility. Please keep in mind that studies focused on specific geographic regions or on particular taxa will be better suited to more specialist journals. In order to help the editors make their decision, in your cover letter please address the specific hypothesis your study addresses, and how the results will interest the broad field of tropical ecology. While we will consider purely descriptive studies of outstanding general interest, the case for them should be made in the cover letter.