In kimberly-bastille/sin-cat: Synthetic Indicator Catalogue

Species Distribution Indicators {#species_dist}

Description: Species mean depth, along-shelf distance, and distance to coastline

Indicator family:

• [X] Habitat
• [X] Megafauna

Contributor(s): Kevin Friedland, Brandon Beltz

Affiliations: NEFSC

knitr::opts_chunk$set(echo = F)
library(ecodata)

Introduction to Indicator

Distribution shifts for a suite of 48 commercially or ecologically important fish species were evaluated using center of gravity metrics based on NEFSC bottom trawl survey data.

Along-shelf distance is a metric for quantifying the distribution of a species through time along the axis of the US Northeast Continental Shelf, which extends northeastward from the Outer Banks of North Carolina. Once mean distance is found, depth of occurrence and distance to coastline can be calculated for each species’ positional center.

Key Results and Visualizations

The center of distribution for a suite of 48 commercially or ecologically important fish species along the entire Northeast Shelf continues to show movement towards the northeast and generally into deeper water.

MidAtlantic

# Plot indicator
ggplotObject <- ecodata::plot_species_dist(report= 'MidAtlantic', varName= 'along')
ggplotObject

# Plot indicator
ggplotObject <- ecodata::plot_species_dist(report= 'MidAtlantic', varName= 'depth')
ggplotObject

NewEngland

# Plot indicator
ggplotObject <- ecodata::plot_species_dist(report= 'NewEngland', varName= 'along')
ggplotObject

# Plot indicator
ggplotObject <- ecodata::plot_species_dist(report= 'NewEngland', varName= 'depth')
ggplotObject

Indicator statistics

Spatial scale: Shelfwide

Temporal scale: Annual

Synthesis Theme:

• [X] Multiple System Drivers

# Either from Contributor or ecodata

Implications

Temperature change is a major driver of changing fish distributions [@friedland_event_2019].

Get the data

Point of contact: Kevin Friedland, [e-mail]{.email}

ecodata name: ecodata::species_dist

Variable definitions

"along-shelf distance" "depth"
"distance to coast"
"Latitude"
"Longitude"

# Pull all var names
vars <- ecodata::species_dist |>
   dplyr::select(Var, Units) |>
   dplyr::distinct()

DT::datatable(vars)

Indicator Category:

• [X] Published Methods

Public Availability

Source data are NOT publicly available.

Accessibility and Constraints

Contact Kevin Friedland, [e-mail] for data access

tech-doc link https://noaa-edab.github.io/tech-doc/species_dist.html

kimberly-bastille/sin-cat documentation built on Oct. 29, 2024, 3:08 a.m.