Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015
We completed four distinct projects to collect baseline data at varying spatial and temporal scales. First, we used data from aerial photographic surveys conducted from 1989-2014 to investigate region-wide trends in the populations of Common Murres and Brandt’s Cormorants. We used 173 observations of Common Murre colony abundance at 14 colonies and 123 observations of Brandt’s Cormorant nest abundance at 10 colonies over the 26-year study period. Additionally, aerial photographic surveys conducted in 2014 were used to document location and abundance of Common Murre, Brandt’s Cormorant, and Double-crested Cormorant across the NCSR. Second, at a more localized scale, we monitored Common Murre reproduction, foraging effort, and diet in 2014 at Castle Rock National Wildlife Refuge using a robotic, remotely-controlled video recording system. Although this is only one of the seabird colonies in the NCSR, it the largest and served to inform our understanding of the mechanisms of population change across the region. Common Murre are very visible and thus ideal for monitoring fine scale patterns in reproduction and changing diet. We measured date of nest initiation, hatching success, fledging success, overall reproductive success, time allocation, provisioning rate, and diet composition via the video. Information gained from these surveys were combined with comparable data from 2007-2013 at Castle Rock to assess baseline condition and variability of these metrics over an 8-year period. Third, in 2014-2015 we conducted ground-based surveys of coastally breeding seabirds inside and outside of six MPAs to establish a framework for continued MPA monitoring. For this, we conducted intensive monitoring of six species likely to benefit from MPA establishment: Pigeon Guillemot, Brandt’s Cormorant, Pelagic Cormorant, Double-crested Cormorant, Western Gull, and Black Oystercatcher. We collected data on breeding population size, breeding productivity, foraging rates and rates of human-caused disturbance inside and outside of each MPA. We monitored productivity by following individual nests visible from land and calculated annual breeding productivity as number of fledglings produced per breeding pair. We monitored foraging from land-based observation points, recording all birds foraging within a 1 km radius of an observation point. We calculated foraging rates as number of birds foraging per hour of observation. We recorded all human-caused disturbances observed during any land-based survey and calculated disturbance rates as number of disturbances per hour of observation.
Data files
Data title and description | Access data | File details | Last updated |
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Data package for Aerial Surveys A Zip file of all resources in the aerial survey component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | ZIP | 01/16/19 |
Data package for Disturbance A Zip file of all resources in the disturbance component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | ZIP | 01/16/19 |
Data package for Foraging A Zip file of all resources in the foraging component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | ZIP | 01/16/19 |
Data package for Productivity A Zip file of all resources in the productivity component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | ZIP | 01/16/19 |
Data package for Reproduction Time A Zip file of all resources in the reproduction time component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | ZIP | 01/16/19 |
Data package for Transect Surveys A Zip file of all resources in the transect survey component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | ZIP | 01/16/19 |
MPA Baseline Program Information - North Coast Lookup table containing a list of North Coast (NC) Marine Protected Area (MPA) baseline program projects and associated information. | Download | CSV | 01/16/19 |
MPA Baseline Program Information - North Coast - Metadata Data dictionary for MPA Baseline Program Information - North Coast | Download | CSV | 01/16/19 |
MPA Boundary Details - North Coast Lookup table containing a list of North Coast (NC) Marine Protected Area (MPA) boundary coordinates. | Download | CSV | 01/16/19 |
MPA Boundary Details - North Coast - Metadata Data dictionary for MPA Boundary Details - North Coast | Download | CSV | 01/16/19 |
Beaufort Lookup Table Lookup table containing Beaufort codes and descriptions used in the NC_Seabirds project. Tab delimited. | Download | TXT | 01/16/19 |
Beaufort Lookup Table - Metadata Metadata for the file NC_SeabirdPopulation_5Beaufort_Lookup_Table_2014_2015.txt. Tab delimited. | Download | TXT | 01/16/19 |
Site Coordinates Lookup Table Lookup table containing boundary coordinates for the list of transects and/or counting blocks used for seabird population, productivity, foraging, and disturbance monitoring. Includes county, area, and transect codes, counting block numbers, and names. For general location information, see NC_SeabirdForaging_2Location_Lookup_Table_2014_2015.txt. Tab delimited. | Download | TXT | 01/16/19 |
Site Coordinates Lookup Table - Metadata Metadata table for the file NC_SeabirdForaging_3Coordinate_Lookup_Table_2014_2015.txt. Tab delimited. | Download | TXT | 01/16/19 |
Site Location Lookup Table Lookup table containing a list of transects and counting blocks used for seabird population, productivity, foraging, and disturbance monitoring. Includes transect codes, counting block numbers, names, general area, and indication of which study/ies took place at that location. For coordinates, see NC_SeabirdForaging_3Coordinate_Lookup_Table_2014_2015.txt. Tab delimited. | Download | TXT | 01/16/19 |
Site Location Lookup Table - Metadata Metadata for the file NC_SeabirdForaging_2Location_Lookup_Table_2014_2015.txt. Tab delimited. | Download | TXT | 01/16/19 |
Observer Lookup Table Lookup table containing observer initials used in the SeabirdPopulation, SeabirdForaging, SeabirdDisturbance, and SeabirdProductivity portion of the NC_Seabirds project. Tab delimited | Download | TXT | 01/16/19 |
Observer Lookup Table - Metadata Metadata for the file NC_SeabirdForaging_7Observer_Lookup_Table_2014_2015.txt. Tab delimited | Download | TXT | 01/16/19 |
Taxon Lookup Table Lookup table containing taxonomic data for species identified in the NC_Seabirds project. Tab delimited. | Download | TXT | 01/16/19 |
Taxon Lookup Table - Metadata Metadata for the file NC_SeabirdForaging_4Taxon_Lookup_Table_2014_2015.txt. Tab delimited. | Download | TXT | 01/16/19 |
Visibility Lookup Table Lookup table containing visibility codes and descriptions used in the NC_Seabirds project. Tab delimited | Download | TXT | 01/16/19 |
Visibility Lookup Table - Metadata Metadata for the file NC_SeabirdForaging_6Visibility_Lookup_Table_2014_2015.txt. Tab delimited. | Download | TXT | 01/16/19 |
Aerial Surveys - Metdata EML metadata for the aerial survey component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | XML | 01/16/19 |
Aerial Surveys - Site Location Lookup Table 2014 Site locations for all the seabird colony photographic survey locations as part of the North Coast Study Region's Baseline Characterization of Seabirds. | Download | CSV | 01/16/19 |
Aerial Surveys - Site Location Lookup Table 2014 - Metadata Data dictionary for Aerial Surveys - Site Location Lookup Table | Download | CSV | 01/16/19 |
Aerial Surveys - Colony Counts Baseline 2014 Total numbers of Common Murres, and Brandt's and Double-crested Cormorant nests, territorial sites, and birds at active breeding colonies throughout the North Coast Study Region in 2014. Counts of non-breeding Brown Pelicans also are included. | Download | CSV | 01/16/19 |
Aerial Surveys - Colony Counts Baseline 2014 - Metadata Data dictionary for Aerial Surveys - Colony Counts Baseline 2014 | Download | CSV | 01/16/19 |
Aerial Surveys - Colony Counts Trends 2000 - 2014 Total numbers of seabird nests, sites, and birds counted from aerial photographs of Castle Rock NWR and Cape Vizcaino and Rockport Rosks for trends component. Counts of non-breeding Brown Pelicans also are included. | Download | CSV | 01/16/19 |
Aerial Surveys - Colony Counts Trends 2000 - 2014 - Metadata Data dictionary for Aerial Surveys - Colony Counts Trends 2000 - 2014 | Download | CSV | 01/16/19 |
Aerial Surveys - Taxon Lookup Table Taxonomic classifications of all seabird species observed during aerial photographic surveys as part of the North Coast Study Region's Baseline Characterization of Seabirds. | Download | CSV | 01/16/19 |
Aerial Surveys - Taxon Lookup Table - Metadata Data dictionary for Aerial Surveys - Taxon Lookup Table | Download | CSV | 01/16/19 |
Disturbance - Data Table 2014 - 2015 Data table containing information regarding surveys/studies during which disturbance data were collected. ""uniqstudy"" is a linking field. Tab deliminated. | Download | TXT | 01/16/19 |
Disturbance - Data Table 2014 - 2015 - Metadata Data dictionary for Disturbance - Data Table 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Study Lookup Table 2014 - 2015 Lookup table containing study codes codes and descriptions used in the NC_Seabird project. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Study Lookup Table 2014 - 2015 - Metadata Data dictionary for Disturbance - Study Lookup Table 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Sources 2014 - 2015 Data table containing information regarding potential/actual disturbance sources observed during population, nearshore foraging, or breeding surveys. ""uniqpotdist"" is a linking field. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Sources 2014 - 2015 - Metadata Data dictionary for Disturbance - Sources 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Sources Lookup Table 2014 - 2015 Definition table containing information regarding potential disturbance sources and their activities observed during population, nearshore foraging, or breeding surveys. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Sources Lookup Table 2014 - 2015 - Metadata Data dictionary for Disturbance - Sources Lookup Table 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Species Data 2014 - 2015 Data table containing information regarding observations of species that were disturbed during population, nearshore foraging, or breeding surveys. ""uniqspaff"" is a linking field. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Species Data 2014 - 2015 - Metadata Data dictionary for Disturbance - Species Data 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Status Lookup Table 2014 - 2015 Lookup table containing status codes and descriptions used in the NC_Seabird project. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Status Lookup Table 2014 - 2015 - Metadata Data dictionary for Disturbance - Status Lookup Table 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Offspring Data 2014 - 2015 Data table containing information regarding observations of offspring that were disturbed during population, nearshore foraging, or breeding surveys. ""uniqoffaff"" is a linking field. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Offspring Data 2014 - 2015 - Metadata Data dictionary for Disturbance - Offspring Data 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Reaction Lookup Table 2014 - 2015 Lookup table containing reaction codes and descriptions used in the NC_Seabird project. Tab delimited. | Download | TXT | 01/16/19 |
Disturbance - Reaction Lookup Table 2014 - 2015 - Metadata Data dictionary for Disturbance - Reaction Lookup Table 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Foraging - Metadata EML metadata for the foraging component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | XML | 01/16/19 |
Foraging - Data table 2014 -2015 Data table containing weekly counts of seabird and marine mammal species observed foraging within a 1-km radius of pre-determined observation points. Tab delimited | Download | TXT | 01/16/19 |
Foraging - Data table 2014 -2015 - Metadata Data dictionary for Foraging - Data table 2014 -2015 | Download | TXT | 01/16/19 |
Foraging - Flock Data 2014 -2015 Data table containing counts of seabird and marine mammal species observed in feeding flocks during nearshore foraging surveys. Tab delimited | Download | TXT | 01/16/19 |
Foraging - Flock Data 2014 -2015 - Metadata Data dictionary for Foraging - Flock Data 2014 -2015. Tab delimited. | Download | TXT | 01/16/19 |
Foraging - Interval Lookup Table 2014 -2015 Lookup table containing interval codes used in the NC_Seabird project. Tab delimited | Download | TXT | 01/16/19 |
Foraging - Interval Lookup Table 2014 -2015 - Metadata Data dictionary for Foraging - Interval Lookup Table 2014 -2015. Tab delimited. | Download | TXT | 01/16/19 |
Foraging - Block Lookup Table 2014 -2015 Lookup table containing time block codes used in the NC_Seabird project. Tab delimited. | Download | TXT | 01/16/19 |
Foraging - Block Lookup Table 2014 -2015 - Metadata Data dictionary for Foraging - Block Lookup Table 2014 -2015. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Metadata EML metadata for the productivity component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | XML | 01/16/19 |
Productivity - Black Oystercatcher 2014 - 2015 Data table containing breeding and productivity data for Black Oystercatchers. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Black Oystercatcher 2014 - 2015 - Metadata Data dictionary for Productivity - Black Oystercatcher 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Brandts Cormorant 2014 - 2015 Data table containing breeding and productivity data for Brandt's Cormorants. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Brandts Cormorant 2014 - 2015 - Metadata Data dictionary for Productivity - Brandts Cormorant 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Double Crested Cormorant 2014 - 2015 Data table containing breeding and productivity data for Double-crested Cormorants. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Double Crested Cormorant 2014 - 2015 - Metadata Data dictionary for Productivity - Double Crested Cormorant 2014 - 2015. Tab delimited | Download | TXT | 01/16/19 |
Productivity - Pelagic Cormorant 2014 - 2015 Data table containing breeding and productivity data for Pelagic Cormorants. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Pelagic Cormorant 2014 - 2015 - Metadata Data dictionary for Productivity - Pelagic Cormorant 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Western Gull 2014 - 2015 Data table containing breeding and productivity data for Western Gulls. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Western Gull 2014 - 2015 - Metadata Data dictionary for Productivity - Western Gull 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Active Lookup Table 2014 - 2015 Lookup table containing Active codes and descriptions used in the NC_Seabirds project. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Active Lookup Table 2014 - 2015 - Metadata Data dictionary for Productivity - Active Lookup Table 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Lay Date Lookup Table 2014 - 2015 Lookup table containing LayDate codes and descriptions used in the NC_Seabirds project. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Lay Date Lookup Table 2014 - 2015 - Metadata Data dictionary for Productivity - Lay Date Lookup Table 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Hatch Date Lookup Table 2014 - 2015 Lookup table containing HatchDate codes and descriptions used in the NC_Seabirds project. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Hatch Date Lookup Table 2014 -2015 - Metadata Data dictionary for Productivity - Hatch Date Lookup Table 2014 -2015. Tab delimited | Download | TXT | 01/16/19 |
Productivity - Date Last Observed Lookup Table 2014 -2015 Lookup table containing DateLastObs codes and descriptions used in the NC_Seabirds project. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Date Last Observed Lookup Table 2014 -2015 - Metadata Data dictionary for Productivity - Date Last Observed Lookup Table 2014 -2015. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Relay Lookup Table 2014 -2015 Lookup table containing Relay codes and descriptions used in the NC_Seabirds project. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Relay Lookup Table 2014 -2015 - Metadata Data dictionary for Productivity - Relay Lookup Table 2014 -2015. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Nest Condition Lookup Table 2014 -2015 Lookup table containing NestCondition codes and descriptions used in the NC_Seabirds project. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Nest Condition Lookup Table 2014 -2015 - Metadata Data dictionary for Productivity - Nest Condition Lookup Table 2014 -2015. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Egg Fate Lookup Table 2014 -2015 Lookup table containing EggFate codes (E1F, E2F, E3F) and descriptions used in the NC_Seabirds project. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Egg Fate Lookup Table 2014 -2015 - Metadata Data dictionary for Productivity - Egg Fate Lookup Table 2014 -2015. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Chick Fate Lookup Table 2014 -2015 Lookup table containing ChickFate codes (E1F, E2F, E3F) and descriptions used in the NC_Seabirds project. Tab delimited. | Download | TXT | 01/16/19 |
Productivity - Chick Fate Lookup Table 2014 -2015 - Metadata Data dictionary for Productivity - Chick Fate Lookup Table 2014 -2015. Tab delimited. | Download | TXT | 01/16/19 |
Reproduction Time - Metadata EML metadata for the reproduction time component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset. | Download | XML | 01/16/19 |
Reproduction Time - Diet - 2014 Raw data collected in 2014 to determine composition of prey returned to the colony by Common Murre throughout the chick-rearing period at Castle Rock National Wildlife Refuge as part of the North Coast Study Region's Baseline Characterization of Seabirds. | Download | CSV | 01/16/19 |
Reproduction Time - Diet - 2014 - Metadata Data dictionary for Reproductive Time - Diet - 2014. | Download | TXT | 01/16/19 |
Reproduction Time - Nesting Success - 2014 Raw data collected in 2014 to determine the timing and success of nesting by a seabird, Common Murre, at Castle Rock National Wildlife Reguge as part of the North Coast Study Region's Baseline Characterization of Seabirds. | Download | CSV | 01/16/19 |
Reproduction Time - Nesting Success - 2014 - Metadata Data dictionary for Reproduction Time - Nesting Success - 2014. | Download | TXT | 01/16/19 |
Reproduction Time - Prey Taxonomy Lookup Table Taxonomic classifications of all prey observed during diet surveys of Common Murre nesting at Castle Rock National Wildlife Refuge as part of the North Coast Study Region's Baseline Characterization of Seabirds. | Download | CSV | 01/16/19 |
Reproduction Time - Prey Taxonomy Lookup Table - Metadata Data dictionary for Reproduction Time - Prey Taxonomy Lookup Table | Download | TXT | 01/16/19 |
Reproduction Time - Site Location Lookup Table Site location for all nesting, time allocation, and diet surveys at Castle Rock National Wildlife Refuge as part of the North Coast Study Region's Baseline Characterization of Seabirds. | Download | CSV | 01/16/19 |
Reproduction Time - Site Location Lookup Table - Metadata Data dictionary for Reproduction Time - Site Location Lookup Table | Download | TXT | 01/16/19 |
Reproduction Time - Time Budget Raw data collected in 2014 to determine the time budget, including allocation of time away from colony to find prey and frequency of chick feedings, for Common Murre nesting at Castle Rock National Wildlife Reguge as part of the North Coast Study Region's Baseline Characterization of Seabirds. | Download | CSV | 01/16/19 |
Reproduction Time - Time Budget - Metadata Data dictionary for Reproduction Time - Time Budget | Download | TXT | 01/16/19 |
Transect Surveys - Metadata EML metadata for the transect survey component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | XML | 01/16/19 |
Transect Surveys - Population Data 2014 - 2015 Data table containing counts of seabird and marine mammal species observed roosting, hauled out, or breeding within the boundaries of pre-determined counting blocks arranged in transects. Tab delimited. | Download | TXT | 01/16/19 |
Transect Surveys - Population Data 2014 - 2015 - Metadata Data dictionary for Transect Surveys - Population Data 2014 - 2015. Tab delimited. | Download | TXT | 01/16/19 |
Supporting files
Data title and description | Access data | File details | Last updated |
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Final Report Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 North coast baseline (phase I) marine protected area (MPA) final report for Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset. This project and report were completed in fulfillment of CA Sea Grant R/MPA-35. | Download | PDF | 01/16/19 |
Aerial Surveys - Methods and Sampling Metadata Metadata for sampling methods for the aerial survey component of Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | PDF | 01/16/19 |
Disturbance - Methods and Sampling Metadata Metadata for sampling methods for the disturbance component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | PDF | 01/16/19 |
Foraging - Methods and Sampling Metadata Metadata for sampling methods of the foraging component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | PDF | 01/16/19 |
Productivity - Methods and Sampling Metadata Metadata for sampling methods for the productivity component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | PDF | 01/16/19 |
Reproduction Time - Methods and Sampling Metadata Metadata for the sampling methods for the reproduction time component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset. | Download | PDF | 01/16/19 |
Transect Surveys - Methods and Sampling Metadata Metadata for sampling methods of the transect survey component of the Characterization of Seabirds, California North Coast MPA Baseline Study, 2014 to 2015 dataset | Download | PDF | 01/16/19 |