The effects of agricultural landscape composition and heterogeneity on bird diversity and community structure in the Chengdu Plain, China

Liao, Jing; Liao, Tao; He, Xingcheng; Zhang, Taxing; Li, Dongrui; Luo, Xiuhai; Wu, Yongjie; Ran, Jianghong

doi:10.1016/j.gecco.2020.e01191

Cited by 9 publications

(9 citation statements)

References 62 publications

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“…In accordance with the results of this study, it has been reported in many studies that as the NP and heterogeneity increase in agricultural areas, bird species diversity expands (Atauri and Lucio, 2001;Devictor and Jiguet, 2007;Fahring et al, 2011;Belfrage et al, 2015;Liao et al, 2020) and the number of individual birds increases in direct proportion (Farina, 1997;Belfrage et al, 2005;McMahon et al, 2008;Smith et al, 2010).…”

Section: Discussionsupporting

confidence: 92%

“…Corroborating other studies (Morelli et al, 2013;Aksan and Akbay, 2018;Liao et al, 2020), diff erences were observed in the size of the patches and edges that produce an edge eff ect between various agricultural zones, creating areas that respond to diff erent habitat demands in terms of wild animals and especially birds. Similar to these study fi ndings, Liao et al (2020) decided that heterogeneity is important for bird diversity because the growth of edge density and the small patch size of cropland indicates a longer edge length. Smith et al, (2010) reported that bird species feeding on invertebrates in organic farming areas are positively associated with increased habitat heterogeneity.…”

Section: Discussionmentioning

confidence: 58%

“…Similar to these study results, Belfrage et al, (2015) found that small-scale agricultural areas provide more patch and land structure diversity than large-scale agricultural areas. According to Belfrage et al, (2015) and Liao et al, (2020), there was a higher number of nesting and breeding birds with more territorial ownership, depending on the diversity of the land structure. It has been determined that not only the NP and the diversity of land structure, but also the distribution of these patches relative to each other are important in the increase in species diversity.…”

Section: Discussionmentioning

confidence: 99%

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Relationships Between Avian Diversity and Agricultural Landscape Heterogeneity

Aksan

2023

Rev. Árvore

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Studies on birds and their habitats are usually conducted in natural areas (protected areas, forests, wetlands, etc.). In this study, the relationship between agricultural landscape diversity and the species diversity of birds was investigated in an agricultural zone surrounded by natural and forested areas. Observations were carried out in 60 sample grid squares. Presence/absence data for birds and cultivated plants at each sample site were recorded. The Shannon-Wiener diversity index for bird species and landscape metrics for agricultural areas were used in the sample site. A multiple linear regression analysis was performed to explain the correlation between agricultural landscape diversity and bird species diversity. According to the results, the area-weighted mean shape index (AWMSI) and the number of patches (NP) were found to be particularly effective at predicting bird species diversity (R2 = 0.66). In addition, as the patch number and patch shape ratio increased in a sample area, the diversity of bird species (R = 0.83) expanded. It can be concluded that agricultural zones consisting of small, different patches are rich areas for bird species diversity. Bird species diversity is lessened in agricultural areas with uniform or similar landscape structures consisting of large patches. If the NP in the area is high, but not distributed in a mosaic pattern, then the diversity of bird species is considered weak. Despite the increasing NP and patch types, bird species diversity declines if there is intense human activity in the area.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 58%

Section: Discussionmentioning

confidence: 99%

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Relationships Between Avian Diversity and Agricultural Landscape Heterogeneity

Aksan

2023

Rev. Árvore

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“…To calculate FD, we collected data on 23 traits that are associated with body features, as well as feeding and breeding ecology in birds (Liao et al, 2020; Zhang et al, 2020). We compiled trait data from The Handbook of the Birds of China for each species found in our surveys (Zhao, 2001).…”

Section: Methodsmentioning

confidence: 99%

“…Functional and phylogenetic data are often used to assess deterministic processes of community assembly (He et al, 2018; Liao et al, 2020; Webb et al, 2002; Xu et al, 2017), such as environmental filtering and interspecific competition, which can result in non‐random community structure (Liao et al, 2020; Montano‐Centellas et al, 2019). Environmental filtering, in which fitness of a species is impacted by environmental conditions (like temperature or water availability), results in phylogenetically and/or functionally clustered biological communities (i.e.…”

Section: Introductionmentioning

confidence: 99%

Seasonal elevational patterns and the underlying mechanisms of avian diversity and community structure on the eastern slope of Mt. Gongga

DuBay

Zhangshang

et al. 2022

Diversity and Distributions

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Aim Mountain ecosystems harbour significant biodiversity across elevations and seasons. This biodiversity, however, is increasingly under threat from climate change and human land use. While much work has been done to characterize biodiversity in tropical mountains, far less is known about the environmental, seasonal and spatial factors that impact diversity and community structure in subtropical and temperate regions. Location Mt. Gongga, Sichuan, China: the eastern‐most peak in Asia above 7000‐m elevation and the main peak of the Hengduan Mountains. Method We examined elevational patterns and ecological variables underlying taxonomic diversity (TD), phylogenetic diversity (PD), functional diversity (FD) and community structure in birds on the eastern slope of Mt. Gongga between 1100‐ and 4400‐m elevation. We assessed biodiversity patterns between species with different elevational range sizes (small‐ vs. large‐ranged species) and between seasons (breeding vs. non‐breeding season). Results We recorded 230 bird species across seven field surveys. TD, PD and FD showed similar hump‐shaped elevational patterns in both seasons. In the breeding season, TD, PD and FD for small‐ranged species were highly correlated with climatic factors (mean daily temperature, seasonal temperature range) and vegetation factors (enhanced vegetation index), while large‐ranged species were correlated with spatial factors (mid‐domain effect). In the non‐breeding season, TD, PD and FD for all species groupings were positively correlated with climate factors. For small‐ranged species in both seasons, community structure was more overdispersed at low and high elevations, and more clustered at middle elevations. For large‐ranged species, community structure differed between seasons, showing a general trend towards clustering as elevations increase in the breeding season and trends towards overdispersion and/or evenness as elevations increase in the non‐breeding season. Conclusions We found that different factors shape elevational patterns of diversity for small‐ and large‐ranged species in the breeding season; small‐ranged species are shaped by climate and vegetation structure, while large‐ranged species are shaped by spatial factors. This difference is likely explained by differences in ecological niche breadth (physiological tolerance and/or habitat specialization) between small‐ranged species and large‐ranged species. In the non‐breeding season, however, when climate is seasonally harsher, we found that patterns of diversity for all range‐size groupings were driven by climatic factors. We also found that community structure generally becomes more overdispersed as resource availability decreases and environmental conditions become harsher, like at higher elevations and in the non‐breeding season, suggesting that competition for limited resources is important for shaping communities in seasonal environments. These findings highlight how avian diversity and community structure are dynamic across a local elevational gradient and season...

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Semi‐natural habitats benefit maintaining the spider diversity in subtropical agroecosystems

Geng,

Lin,

et al. 2023

Land Degrad Dev

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Land use change has caused the loss of agricultural biodiversity. As major natural enemies of pests in agroecosystems, spiders have important ecological functions in improving agricultural productivity and thus deserve attention. However, few studies have considered their responses to land use changes. Here, we investigated the structure and diversity of the spider community in four land use types, that is, fallow land, woodland, orchard, and cropland in Pengzhou City, China. The differences in species richness, total abundance, community composition, and spider abundances with three foraging strategies and their correlations with environmental factors and agricultural intensity were compared between land use types. The results showed that the total abundance of spiders in fallow land was 71%, 157%, and 214% higher than that in orchard, cropland, and woodland, respectively. Similarly, fallow land maintained the highest species richness. Shannon–Wiener index, community structure heterogeneity, and number of spider species sampled in a single land use type were highest in woodland. Further, spiders with different foraging strategies showed distinctive responses to environmental factors and agricultural practices. The diversity of hunters was negatively correlated with the intensity of agricultural practices and canopy density, while web‐builders were positively correlated with canopy density. The diversity of burrowers was positively correlated with the vertical complexity of vegetation structure. Our study emphasizes the vital role of semi‐natural habitats, like fallow land and woodland, in maintaining spider diversity, and suggests optimizing land uses to provide wide‐open spaces and mitigate the effects of intensified agricultural activities for natural enemies of pests in agriculture.

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The effects of agricultural landscape composition and heterogeneity on bird diversity and community structure in the Chengdu Plain, China

Cited by 9 publications

References 62 publications

Relationships Between Avian Diversity and Agricultural Landscape Heterogeneity

Relationships Between Avian Diversity and Agricultural Landscape Heterogeneity

Seasonal elevational patterns and the underlying mechanisms of avian diversity and community structure on the eastern slope of Mt. Gongga

Semi‐natural habitats benefit maintaining the spider diversity in subtropical agroecosystems

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