Data from: Cross-scale effects of habitat fragmentation on local biodiversity and ecosystem multifunctionality in a fragmented grassland landscape
Data files
Apr 03, 2025 version files 81.34 KB
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Biodiversity_and_Ecosystem_Functions_Data.xlsx
25.28 KB
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Habitat_Fragmentation_Data.xlsx
51.66 KB
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README.md
4.40 KB
Abstract
Anthropogenic habitat fragmentation has become the main threat to terrestrial ecosystems worldwide. However, the impacts of habitat fragmentation at different spatial scales on biodiversity and ecosystem functions remain uncertain. Based on 130 fragmented grassland landscapes in the agro-pastoral ecotone of northern China, we investigated the hierarchical effects of habitat fragmentation at landscape and patch scales on plant, soil bacteria, and soil fungi diversity and ecosystem multifunctionality in local sample sites. We found that increased inter-patch distance within the landscape had the strongest negative effect on plant richness. Decreased habitat amount within the landscape had the strongest negative effect on bacteria richness, fungi richness, and 80% threshold multifunctionality. Decreased patch area and increased patch isolation had the strongest negative effects on 30% and 50% threshold multifunctionality, respectively. Importantly, we found that patch-scale fragmentation mediated the negative effects of landscape-scale fragmentation on biodiversity and ecosystem multifunctionality. And biodiversity had no significant effect on ecosystem multifunctionality.
Synthesis. Our study highlights that both landscape-scale and patch-scale fragmentation decline biodiversity and ecosystem multifunctionality in the agro-pastoral ecotone in northern China, with a significant spatial hierarchical structure. Biodiversity poorly predicts ecosystem multifunctionality in the fragmented grassland landscape.
Dataset DOI: 10.5061/dryad.kprr4xhgs
Description of the data and file structure
There are two data files. The “Habitat Fragmentation Data” and “Biodiversity and Ecosystem Functions Data” files contain data from 130 sample sites collected in the Tabu River Basin in the Siziwang Banner of the agro-pastoral ecotone of northern China.
Files and variables
File: Biodiversity_and_Ecosystem_Functions_Data.xlsx
Description:
Variables
- Sample site: the ID of 130 sample sites.
- Plant richness: number of plant species.
- Bacteria richness: number of ASVs of soil bacteria.
- Fungi richness: number of ASVs of soil fungi.
- AGB: above-ground biomass (g).
- SOC: soil organic carbon (%).
- TN: soil total nitrogen (%).
- NH4: soil ammonium (mg/kg).
- NO3: soil nitrate (mg/kg).
- TP: soil total phosphorus (g/kg).
- AP: soil available phosphorus (mg/kg).
- Multifunctionality 30%: ecosystem multifunctionality at the 30% threshold.
- Multifunctionality 50%: ecosystem multifunctionality at the 50% threshold.
- Multifunctionality 80%: ecosystem multifunctionality at the 80% threshold.
File: Habitat_Fragmentation_Data.xlsx
Description:
Variables
- Sample site: the ID of 130 sample sites.
- Longitude: longitude of sample site (expressed in decimal degrees).
- Latitude: longitude of sample site (expressed in decimal degrees).
- PA: area of the grassland patch where the sample site is located (ha).
- DE: distance of the sample site from the grassland patch edge (m).
- DM: distance of the grassland patch from the mainland (m).
- HM(100-m): habitat amount in the landscape with a radius of 100 m (%).
- HM(200-m): habitat amount in the landscape with a radius of 200 m (%).
- HM(300-m): habitat amount in the landscape with a radius of 300 m (%).
- HM(400-m): habitat amount in the landscape with a radius of 400 m (%).
- HM(500-m): habitat amount in the landscape with a radius of 500 m (%).
- HM(600-m): habitat amount in the landscape with a radius of 600 m (%).
- HM(700-m): habitat amount in the landscape with a radius of 700 m (%).
- HM(800-m): habitat amount in the landscape with a radius of 800 m (%).
- HM(900-m): habitat amount in the landscape with a radius of 900 m (%).
- HM(1000-m): habitat amount in the landscape with a radius of 1000 m (%).
- ED(100-m): edge density in the landscape with a radius of 100 m (m/ha).
- ED(200-m): edge density in the landscape with a radius of 200 m (m/ha).
- ED(300-m): edge density in the landscape with a radius of 300 m (m/ha).
- ED(400-m): edge density in the landscape with a radius of 400 m (m/ha).
- ED(500-m): edge density in the landscape with a radius of 500 m (m/ha).
- ED(600-m): edge density in the landscape with a radius of 600 m (m/ha).
- ED(700-m): edge density in the landscape with a radius of 700 m (m/ha).
- ED(800-m): edge density in the landscape with a radius of 800 m (m/ha).
- ED(900-m): edge density in the landscape with a radius of 900 m (m/ha).
- ED(1000-m): edge density in the landscape with a radius of 1000 m (m/ha).
- ENN_MN(100-m): mean nearest-neighbor distance among grassland patches in the landscape with a radius of 100 m (m).
- ENN_MN(200-m): mean nearest-neighbor distance among grassland patches in the landscape with a radius of 200 m (m).
- ENN_MN(300-m): mean nearest-neighbor distance among grassland patches in the landscape with a radius of 300 m (m).
- ENN_MN(400-m): mean nearest-neighbor distance among grassland patches in the landscape with a radius of 400 m (m).
- ENN_MN(500-m): mean nearest-neighbor distance among grassland patches in the landscape with a radius of 500 m (m).
- ENN_MN(600-m): mean nearest-neighbor distance among grassland patches in the landscape with a radius of 600 m (m).
- ENN_MN(700-m): mean nearest-neighbor distance among grassland patches in the landscape with a radius of 700 m (m).
- ENN_MN(800-m): mean nearest-neighbor distance among grassland patches in the landscape with a radius of 800 m (m).
- ENN_MN(900-m): mean nearest-neighbor distance among grassland patches in the landscape with a radius of 900 m (m).
- ENN_MN(1000-m): mean nearest-neighbor distance among grassland patches in the landscape with a radius of 1000 m (m).