Dataset

Bull Kelp Forest Ecosystem Monitoring Database, Northern California, 1971-2023

OBIS USA MeasurementOrFact Open in mapper Explore occurrences

Kelps are critical habitat structuring organisms forming dense underwater forests in nearshore rocky reefs of northern California. Kelp forests support a range of species such as red abalone and red sea urchins which form the basis for important invertebrate fisheries in the region. Along with fisheries, kelp forests provide a suite of other ecosystem services including supporting biodiversity and carbon sequestration, making them critical habitats to monitor. Monitoring of kelps and kelp obligate species is now more important than ever with the intensification of ocean changes such as marine heatwaves, low oxygen events and ocean acidification. Changes in kelp forest ecosystems associated with fishing can be observed inside fished sites whereas changes in protected sites suggests region wide stressors. In this long-term, bull kelp forest monitoring program, divers quantify key marine invertebrates, algal cover and substrate types along transects inside and outside fished sites centered in Sonoma and Mendocino Counties, in northern California. As nearshore kelp forest ecosystems face increasing stressors, long term monitoring programs will be critical for informing fishery management, restoration strategies and marine spatial planning.

Citation: Laura Rogers-Bennett, & Robert Klamt. (2024). Bull Kelp Forest Ecosystem Monitoring Database, Northern California, 1971-2023 (ongoing). California Ocean Protection Council Data Repository. doi:10.25494/P66W3J.

Published: July 09, 2025 at 20:11

URL: https://ipt-obis.gbif.us/resource?r=bullkelp_ecosystem_monitoring_norcal

Laura Rogers-Bennett
University of California Davis

Robert Klamt
University of California Davis

Marine Lebrec
CeNCOOS/MBARI

24,474
occurrence records
91,869
measurements and facts
78
taxa
52
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 24,474
100.0%
maximumDepthInMeters 1,559
6.4%
minimumDepthInMeters 1,559
6.4%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 1,559
6.4%
MIN_DEPTH_EXCEEDS_MAX 45
0.2%
DEPTH_EXCEEDS_BATH 43
0.2%

Measurement types

DNA derived data