This dataset from the Channel Islands National Park's Kelp Forest Monitoring Program has measurements of the abundance of selected rare, clumped, sedentary indicator species. The summary data presented here represents the mean density per square meter. Sampling is conducted annually between the months of May-October, so the Time data in this file is July 1 of each year (a nominal value). The original measurements were taken at various depths, so the Depth data in this file is the depth of the station's temperature logger, which is a typical depth.

This dataset from the Channel Islands National Park's Kelp Forest Monitoring Program has measurements of the abundance (density) of relatively abundant selected sedentary indicator species. The summary data presented here represents the mean density per square meter. Sampling is conducted annually between the months of May-October, so the Time data in this file is July 1 of each year (a nominal value). The actual measurements were taken at various depths, so the Depth data in this file is the depth of the station's temperature logger, which is a typical depth.

This dataset from the Channel Islands National Park's Kelp Forest Monitoring Program has measurements of the abundance of fish species. The original measurements were taken at various depths, so the Depth data in this file is the depth of the station's temperature logger, which is a typical depth.

This dataset from the Channel Islands National Park's Kelp Forest Monitoring Program has subtidal temperature data taken at permanent monitoring sites. Since 1993, remote temperature loggers manufactured by Onset Computer Corporation were deployed at each site approximately 10-20 cm from the bottom in a underwater housing. Since 1993, three models of temperature loggers (HoboTemp (tm), StowAway (R) and Tidbit(R)) were used to collect temperature data every 1-5 hours depending on the model used.

Kelp Forest Transect Surveys conducted along 30x2m transects on rocky reef habitats from 0-60 ft depth in Sonoma and Mendocino counties, Northern California. The data set includes depth of transect; number, size and species of abalone and urchins; number of associated species and predators; substrate type; percent cover of algal type along a 30x2m transect. Transect locations are identified by latitude and longitude at sampling and are stratified into 4 depth ranges: 0-15ft, 16-30ft, 31-45ft, and 46-60ft. This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000061. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

Kelp Forest Transect Surveys conducted along 30x2m transects on rocky reef habitats from 0-60 ft depth in Sonoma and Mendocino counties, Northern California. The data set includes depth of transect; number, size and species of abalone and urchins; number of associated species and predators; substrate type; percent cover of algal type along a 30x2m transect. Transect locations are identified by latitude and longitude at sampling and are stratified into 4 depth ranges: 0-15ft, 16-30ft, 31-45ft, and 46-60ft. This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000061. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

We systematically surveyed 94 of the 122 nearshore rocky reefs in the California south coast study region (SCSR). This synoptic baseline survey was conducted at 75 individual sites in 2011 and 88 sites in 2012. In addition, we incorporate two similar ‘historical’ data sets from 59 sites in 2004 and 79 sites in 2008. From 2011-2012, we surveyed all accessible nearshore rocky reefs found in the SCSR MPAs and determined the appropriateness of references areas for each. This baseline provides, for the first time, a taxonomically exhaustive biogeographic assessment of the nearshore subtidal reefs in the SCSR, improving significantly on our knowledge of the region and incorporating newly established and existing MPAs. Results confirm previously described patterns for subtidal fishes, reflect the physical oceanographic complexities of the Southern California Bight and add new knowledge to biogeographic patterns of algae and invertebrates. The SCSR is characterized by strong environmental gradients, a major defining feature of the SCSR compared to the other California MLPA Study Regions that have relatively more spatially consistent physical environments. These differences are reflected biologically in a high degree of kelp forest community structure across the region. We identified 17 geographically cohesive community clusters, each with distinct fish, invertebrate, and algal assemblages (Figure ES.1). Although kelp forest communities in the SCSR are highly variable, the structure can be related to the sea surface temperature patterns caused by the confluence of the California Current, the Southern California Counter Current and localized upwelling. Benthic habitat structure also varies within the region; the geology and structure of island reefs are functionally different from mainland reefs. Mainland reefs generally are less steep, can be found significantly offshore of the coastline, and have a greater influence of sedimentation moving through the system. With few exceptions, island reefs are generally abrupt, high relief structures, tightly fit to the coastline with less influence of the nearby soft bottom habitat. Ideally, long-term monitoring of MPAs should be distributed across the distinct areas as each is likely to respond differently.

This data set presents the data collected in 2014 as part of the long-term terrestrial kelp forest monitoring program at Channel Islands National Park in collaboration with the Mediterranean Coast Network of the NPS Inventory and Monitoring Program.

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PURPOSE: The research survey provides a fisheries-independent source of information about all marine living organisms that are captured by the fishing trawl used to obtain samples in the southern Gulf of St. Lawrence. DESCRIPTION: Tow, catch, length frequency, and biological information for fish caught during the annual September research vessel trawl surveys in the southern Gulf of St. Lawrence (NAFO Division 4T). Abundance indices and spatial distribution patterns of commercial and non-commercial groundfish. The catch data that appear in this dataset SHOULD NOT BE USED FOR ECOLOGICAL ANALYSES INVOLVING CATCH RATES. Important factors such as vessel, fishing gear and diurnal periods must be accounted for to use these data in analyses. Please contact the data custodians if you are interested in using this data for any kind of ecological analyses involving catch rates. PARAMETERS COLLECTED: abundance estimates (ecological); distribution (ecological); species counts (ecological); gear (fishing); vessel information (fishing); point (spatial) NOTES ON QUALITY CONTROL: Scientific names listed in the survey species list have been mapped to recognized standards - marine taxa have been mapped to the World Register of Marine Species (WoRMS) using their online taxon match tool. All sampling locations were plotted on a map to perform a visual check confirming that the latitude and longitude coordinates were within the described sampling area. In 2003, because of a fire aboard the Alfred Needler, the Wilfred Templeman was used for the survey. However, no comparative fishing experiments have been conducted between the Alfred Needler and the Wilfred Templeman. We are therefore unable to integrate the indices derived for 2003 to the remainder of the survey time-series. SAMPLING METHODS: Sampling Method: Consult the "Protocols for research vessel cruises within the Gulf Region (dermersal fish) (1970-1980)" report, link provided in the citations list. USE LIMITATION: To ensure scientific integrity and appropriate use of the data, we would encourage you to contact the data custodian.