Sites dominated by common fiddleneck (Amsinckia menziesii var. intermedia) support diverse plant-pollinator interactions
Data files
Mar 26, 2024 version files 46.14 KB
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all.richness.xlsx
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README.md
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year1.net.xlsx
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year2.net.xlsx
Abstract
Biodiversity is declining at unprecedented rates worldwide due largely to land use change and abnormal disturbance events. The high species diversity and endemicity found in California’s coastal sage scrub (CSS) are especially at risk from urban development and ongoing disturbance. However, several CSS plant species have disturbance adaptations which may allow them to serve as vital resources for insect pollinators when native plant diversity is threatened. Common fiddleneck (Amsinckia menziesii var. intermedia) is one of the first annual forbs to germinate in CSS and as a result, it occurs in high density patches in early spring which temporarily creates a near monoculture. Although fiddleneck is a prominent CSS plant, particularly in areas that have experienced a disturbance event, its larger ecological role is not well explored. Therefore, we monitored ten sites across a disturbance gradient for two spring seasons to assess the composition of plant-pollinator networks in fiddleneck-dominated plots. We found fiddleneck supported a diverse pollinator community with 68% of recorded taxa visiting fiddleneck. The plants most frequently visited included two native annual forbs (common fiddleneck and Phacelia distans) and two invasive annual forbs (Erodium cicutarium and Brassica tournefortii). Plant and pollinator abundances increased with increased mean precipitation. Additionally, plant-pollinator networks changed over time; the number of links per species increased throughout the season but did not differ amongst disturbance types. Despite the numerical dominance of fiddleneck, CSS supported a diversity of pollinator taxa and exhibited complex plant-pollinator networks across the disturbance gradient.
README
Sites dominated by common fiddleneck (Amsinckia menziesii var. intermedia) support diverse plant-pollinator interactions
[https://doi.org/10.5061/dryad.4f4qrfjk7](https://doi.org/10.5061/dryad.4f4qrfjk7)
This dataset is from the manuscript "Sites dominated by common fiddleneck (Amsinckia menziesii var. intermedia) support diverse plant-pollinator interactions" and provides the details of the plant and butterfly data analyzed in this manuscript.
Description of the data files:
all.richness = biotic and abiotic data for the plant-pollinator observations analyzed in the study
year1.net = plant-pollinator network for year 1 (2022) of the study
year2.net = plant-pollinator network for year 2 (2023) of the study
all.richness
- year: Year of observation (2002 or 2023)
- site: Site where observation took place (site 1-10)
- amme.foliar.cover: Amsinckia menziesii var. intermedia foliar cover for respective plant species (out of 100%)
- AMME.floral.cover: Amsinckia menziesii var. intermedia floral cover (out of 100%)
- disturbance: Disturbance regime for respective site (single incident, recurring, none)
- ppt.month: Average monthly precipitation (inches). Data from UC ANR (https://ceriverside.ucanr.edu/About_CE_Riverside/weather_667/?weather=station&station=44
- week.num: Week number of the respective year at time of observation
- native.poll.diversity: Number of native pollinator species recorded
- n.honeybee: Number of honeybees (Apis mellifera) recorded
- n.other: Number of native pollinators recorded
- S.natives: Native plant species richness
- average.invasive.cover: Mean invasive plant cover
year1.net
- plants: ACGL: Acmispon glaber; AMME: Amsinckia menziesii; CAME: Calandrinia menziesii; CRPT: Cryptantha spp.; ENFA: Encelia farinosa; ERCI: Erodium cicutarium; ERFA: Eriogonum fasciculatum; HIIN: Hirschfeldia incana; LYCA: Lycium californicum; NEME: Nemophila menziesii; PHDI: Phacelia distans
year2.net
- plants: AMME: Amsinckia menziesii; BRTO: Brassica tournefortii; CAME: Calandrinia menziesii;CRPT: Cryptantha spp;ERCI: Erodium cicutarium; ERMO: Erodium moschatum; GIAN: Gilia angelensis; HIIN: Hirschfeldia incana; MAPA: Malva parviflora; PHDI: Phacelia distans; SIIR: Sisymbrium irio; VIVI: Vicia villosa