19:I[42426,["/_next/static/immutable/chunks/1xctgzqre-wsy.js","/_next/static/immutable/chunks/06_-wz6pdtp2b.js","/_next/static/immutable/chunks/30e52g49hg40p.js","/_next/static/immutable/chunks/02yq6tul2z-oh.js","/_next/static/immutable/chunks/10bx_ec2vj7n_.js","/_next/static/immutable/chunks/33bfn03fo8xnt.js","/_next/static/immutable/chunks/0tfjf78scu61b.js","/_next/static/immutable/chunks/31xnvej4n1bi9.js"],"default"] 1a:T80f,

Growth data for animals on experimental plates in the field during 2013 was collected monthly via digital photographs and measured using ImageJ software. Respiration of limpets collected from the field during summer 2013 was measured in air or seawater at a range of temperatures for one hour or two hours.

Related Reference:

Miller, L.P., B.J. Allen, F.A. King, D.R. Chilin, V.M. Reynoso and M.W. Denny (2015). Warm microhabitats drive both increased respiration and growth rates of intertidal consumers. Marine Ecology Progress Series 522: 127-143 doi: http://dx.doi.org/10.3354/meps11117

Download R code: 2013_limpet_mass_analysis.R

Related Datasets (includes metadata)	Download original data files
limpet mass and body volume	2013_limpet_mass_master.csv
limpet aquatic respiration	2013_summer_aquatic_respiration_rates.csv
limpet aerial respiration	2013_summer_aerial_respiration_rates.csv

These data are also available at the Stanford Digital Repository: https://purl.stanford.edu/mz343tz6255

1b:Tb98,From NSF award abstract: Functional traits of species are those that determine either species-specific responses to environmental conditions or their influence on ecological processes. Current theory suggests that communities with many species that perform a given function in a similar way but have different sensitivities to environmental conditions will exhibit greater temporal stability of ecosystem properties. So-called functional redundancy should lead to compensation among species, as some will do better when others do worse in response to environmental variability. Anthropogenic global warming is a major driver of current and anticipated changes in population dynamics, species interactions, and community structure from local to global scales. Resulting changes in biodiversity therefore have the potential to significantly alter important ecosystem properties such as productivity, nutrient cycling, and resistance to disturbance or invasion. Although ecologists have typically emphasized the response of populations and communities to changing climatic averages (e.g., increasing temperature and rainfall), global circulation models also predict significant increases in the intensity, frequency and duration of extreme weather and climate events in many parts of the world; that is, increases in the variability of the physical environment. Unfortunately, our current knowledge about the effects of increasing climatic variation on natural ecosystems is generally quite poor. Predicting how communities will likely respond to changing environmental variability has therefore been recognized as a critical research priority. This project will advance our understanding of how projected changes in temperature variability will affect the behavior, demography, and interactions of key taxa on rocky shores, a model system for testing theoretical ecological predictions with field experiments. Environmental temperatures strongly influence the physiology, behavior, and demography of most organisms, and changes in average temperature have already been implicated in geographic range shifts of many species. A novel manipulative technique will be used to test the effects of changes in thermal variability on performance by a guild of congeneric grazing limpets, the productivity of their benthic microalgal food, and the resulting interaction strengths between the two taxa. Energy transfer among trophic levels is a key ecosystem process linked to local food-web support and rates of nutrient cycling. This research will evaluate not only species-specific effects of thermal variability on limpet survival, growth, and grazing activity, but also the potential for functional redundancy among limpet species to maintain that ecosystem function over time as environmental variability increases. Data generated from this study will provide a framework for future investigations of the consequences of climate change in this diverse and productive habitat.6:["$","$L19",null,{"dataset":{"_id":"630054","description":"$1a","problem":"","acquisition":"

Oxygen measurements taken using Ocean Optics FOXY fluorescence-based optode. Limpet mass data for all measured animals is included. Detailed methodology is available in Miller et al (2015).

\n","processing":"

Growth measurements were made by analyzing limpet shell projected area in ImageJ. Limpet respiration time series were used to estimate oxygen consumption rate. Complete analysis for size measurements and derived respiration rates are provided in the attached R code.

BCO-DMO Processing:

- added conventional header with dataset name, PI name, version date
\n- renamed parameters to BCO-DMO standard
\n- replaced NA with nd (no data)
\n- replaced spaces with underscores
\n- sorted data by air_water, then species, then temp

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whether respiration trial was run in air or water (Reminder that many limpets in this data file were run as pilot trials and not included in the published analysis.)

","units":{"_id":"","name":"unitless"},"type":{"_id":"1073","name":"no_bcodmo_term","description":"

An association with a community-wide standard parameter has not yet been made.

"}},{"_id":"632604","name":"species","format":"","frictionlessType":"","description":"

Lottia species name

","units":{"_id":"","name":"unitless"},"type":{"_id":"976","name":"species","description":"

a taxonomic binomial that consists of a genus name followed by the species name of an organism

"}},{"_id":"632605","name":"temp","format":"","frictionlessType":"","description":"

temperature of respiration trial

","units":{"_id":"","name":"degrees Celsius"},"type":{"_id":"733","name":"temperature","description":"

water temperature at measurement depth

"}},{"_id":"632606","name":"limpet","format":"","frictionlessType":"","description":"

unique identifying label for each limpet consisting of a 3-character species name abbreviation and a 3 or 4 digit number: lim = Lottia limatula; dig = L. austrodigitalis; sca = L. scabra; pel = L. pelta

","units":{"_id":"","name":"unitless"},"type":{"_id":"960","name":"sample","description":"

unique sample identification or number; any combination of alpha numeric characters; precise definition is file dependent

"}},{"_id":"632607","name":"mass_submerged_g","format":"","frictionlessType":"","description":"

mass of the submerged live limpet in seawater; used for calculation of volume

","units":{"_id":"","name":"grams"},"type":{"_id":"1678","name":"weight","description":"

Weight of a sample or object; see dataset for units of measurement. Weight is a physical quality inhering in a bearer that has mass near a gravitational body. (Mass and weight are not equivalent.)

"}},{"_id":"632608","name":"mass_air_g","format":"","frictionlessType":"","description":"

wet mass of live limpet (shell + tissue)

","units":{"_id":"","name":"grams"},"type":{"_id":"1678","name":"weight","description":"

Weight of a sample or object; see dataset for units of measurement. Weight is a physical quality inhering in a bearer that has mass near a gravitational body. (Mass and weight are not equivalent.)

"}},{"_id":"632609","name":"mass_empty_shell_g","format":"","frictionlessType":"","description":"

dry mass of empty limpet shell

","units":{"_id":"","name":"grams"},"type":{"_id":"1678","name":"weight","description":"

Weight of a sample or object; see dataset for units of measurement. Weight is a physical quality inhering in a bearer that has mass near a gravitational body. (Mass and weight are not equivalent.)

"}},{"_id":"632610","name":"mass_tin_tare_g","format":"","frictionlessType":"","description":"

mass of tin foil weighing dish; used for drying tissue

","units":{"_id":"","name":"grams"},"type":{"_id":"1678","name":"weight","description":"

Weight of a sample or object; see dataset for units of measurement. Weight is a physical quality inhering in a bearer that has mass near a gravitational body. (Mass and weight are not equivalent.)

"}},{"_id":"632611","name":"mass_dry_gross_g","format":"","frictionlessType":"","description":"

mass of tin foil dish and dried tissue

","units":{"_id":"","name":"grams"},"type":{"_id":"1678","name":"weight","description":"

Weight of a sample or object; see dataset for units of measurement. Weight is a physical quality inhering in a bearer that has mass near a gravitational body. (Mass and weight are not equivalent.)

"}},{"_id":"632612","name":"image_id","format":"","frictionlessType":"","description":"

corresponding image name for limpet shell (used to calculate projected area of shell)

","units":{"_id":"","name":"unitless"},"type":{"_id":"960","name":"sample","description":"

unique sample identification or number; any combination of alpha numeric characters; precise definition is file dependent

"}},{"_id":"632613","name":"mass_tissue_live_g","format":"","frictionlessType":"","description":"

wet tissue mass; calculated as difference between mass_air_g and mass_empty_shell_g

","units":{"_id":"","name":"grams"},"type":{"_id":"1678","name":"weight","description":"

Weight of a sample or object; see dataset for units of measurement. Weight is a physical quality inhering in a bearer that has mass near a gravitational body. (Mass and weight are not equivalent.)

"}},{"_id":"632614","name":"mass_net_dry_tissue_g","format":"","frictionlessType":"","description":"

dried tissue mass; calculated as difference between mass_dry_gross_g and mass_tin_tare_g

","units":{"_id":"","name":"grams"},"type":{"_id":"1678","name":"weight","description":"

Weight of a sample or object; see dataset for units of measurement. Weight is a physical quality inhering in a bearer that has mass near a gravitational body. (Mass and weight are not equivalent.)

"}},{"_id":"632615","name":"mass_net_disp_g","format":"","frictionlessType":"","description":"

net displaced mass; calculated as the difference betweenmass_air_g and mass_submerged_g

","units":{"_id":"","name":"grams"},"type":{"_id":"1678","name":"weight","description":"

Weight of a sample or object; see dataset for units of measurement. Weight is a physical quality inhering in a bearer that has mass near a gravitational body. (Mass and weight are not equivalent.)

"}},{"_id":"632616","name":"vol_limpet_cm3","format":"","frictionlessType":"","description":"

limpet displaced volume; calculated as mass_net_disp_g * 1.0247 (density of local seawater at 15C = 1.0247 g/cm^3).

","units":{"_id":"","name":"cm^3"},"type":{"_id":"819","name":"disp_vol","description":"

displacement volume (biovolume) of plankton net samples, units will vary

"}},{"_id":"632617","name":"area_shell_mm2","format":"","frictionlessType":"","description":"

projected area of limpet shell when viewed from above; measured using the digital image of the shell in ImageJ by painting the outline of the shell and calculating the enclosed area. This same method was used to estimate limpet growth in the field using digital images taken from overhead.

","units":{"_id":"","name":"mm^2"},"type":{"_id":"1073","name":"no_bcodmo_term","description":"

An association with a community-wide standard parameter has not yet been made.

"}},{"_id":"632618","name":"date_collection","format":"","frictionlessType":"","description":"

date that limpet was collected from the field

","units":{"_id":"","name":"mm/dd/yyyy"},"type":{"_id":"1070","name":"date","description":"

date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)

"}},{"_id":"632619","name":"date_trial","format":"","frictionlessType":"","description":"

date of respiration measurements

","units":{"_id":"","name":"mm/dd/yyyy"},"type":{"_id":"1070","name":"date","description":"

"}},{"_id":"632620","name":"comment","format":"","frictionlessType":"","description":"

lists whether limpet shell was intact or chipped. Chipped shells should not be used to calculate the relationship between limpet mass and projected area measured in overhead images.

","units":{"_id":"","name":"unitless"},"type":{"_id":"778","name":"comment","description":"

free text comments, may only have meaning to submitting PI

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