Soay sheep demographic monitoring (Bovidae)

Knowledge graph centered on Soay sheep demographic monitoring (Bovidae) with 19 nodes and 52 connections. Top connected: Marmota flaviventris, mark-recapture (Sciuridae), Parus major, early-life trade-offs, Daphnia.

Method synopsis

Long-term individual-based monitoring of unmanaged feral sheep population including annual fecundity and mass measurements. Combined with population census data and climatic indices.

Synthesized from method descriptions across 1 paper using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — Detecting context dependence in the expression of life history trade-offs (2024), Journal of Animal Ecology. Implementations in other papers (listed below) may differ.

1. Soay sheep data collection and processing
   Used existing data from unmanaged feral sheep population on Hirta island, St. Kilda. Measured ewe fecundity (number of lambs 0-2) and log mass in following summer. Environmental variables included population density and winter NAO index. Data span 37 years with 2497 reproductive events from 861 ewes.
   Quantities: 2497 reproductive events, 861 ewes, 37 years of dataDuration: Annual measurements 1985-2022Conditions: Island environment, St. Kilda Scotland (57°48'N, 8°37'W)
   Equipment: Mass scales, Population census equipment, Individual identification tags

Typical Equipment

• Mass scales
• Population census equipment
• Individual identification tags

Output Measurements

• ewe fecundity
• individual mass
• population density
• winter NAO index

Papers Using This Protocol (1)

Species Studied With This Protocol