10.5061/DRYAD.JB85F
Cheng, Brian S.
Smithsonian Environmental Research Center
University of California, Davis
Komoroske, Lisa M.
University of California, Davis
Southwest Fisheries Science Center
Grosholz, Edwin D.
University of California, Davis
Data from: Trophic sensitivity of invasive predator and native prey
interactions: integrating environmental context and climate change
Dryad
dataset
2017
Salinity
Ostrea lurida
Ocenebra inornata
Urosalpinx cinerea
Holocene
thermal optima
thermal safety margin
thermal performance curve
2017-08-30T00:00:00Z
2017-08-30T00:00:00Z
en
https://doi.org/10.1111/1365-2435.12759
6240530 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Climate change is predicted to intensify the impacts of invasive species
by enhancing their performance relative to their native counterparts.
However, few studies have compared the performance of invasive predators
and native prey, despite the fact that non-native predators are well known
to disrupt native communities. The ‘trophic sensitivity hypothesis’
suggests that predators are less tolerant of increasing environmental
stress than their prey, whereas the ‘tolerant invaders hypothesis’
suggests that invaders are more tolerant than native species due to
selection during the introduction process. It is therefore unclear how
invasive predators will respond to increasing climate stressors. We
coupled physiological measurements (thermal tolerance, thermal optima,
salinity tolerance, predation rate) with environmental time-series data to
assess the effects of warming and extreme low salinity events on
non-native predators (gastropods) and native prey (oysters) from a coastal
ecosystem. In general support of the trophic sensitivity hypothesis, we
found that both non-native predators exhibited lower thermal optima
relative to native prey, lower salinity tolerance and one predator was
less tolerant of warming. However, because warming tolerance was extremely
high (i.e. habitat temperature is 7·9–21 °C below thermal tolerance),
near-term warming may first increase predator performance (consumption and
growth rates), with negative effects on prey. Low salinity will likely
produce heterogeneous effects on predator–prey interactions due to varying
watershed sizes among estuaries that control the duration of low salinity
events. The trophic sensitivity hypothesis may be a useful framework for
understanding community responses to extreme climate change, which
portends a decoupling of predator–prey interactions. However, we conclude
that this hypothesis must be evaluated in environmental context and that
coupling physiological metrics with in situ environmental data offers the
best predictive power of near-term climate change impacts on invaded
communities. Within our study system, warming is likely to intensify the
impacts of both invasive predators, which may greatly reduce the abundance
of the native oyster, a species of conservation and restoration focus.
Thermal tolerance dataThermal tolerance data from the heat bar experiment.
Each row is an individual animal and each column describes the conditions
and response for that animal. "tube" refers to the tube number
for the heat bar. "row" refers to the row within the heat bar.
"Species" refers to Oyster (Ostrea lurida), Atlantic drill
(Urosalpinx cinerea), and Japanese drill (Ocenebra inornata).
"temp" refers to the temperature during the last hour of
exposure in degrees Celsius. "alive" refers to whether or not
the animal was alive the following day after heat exposure (Y = yes, N =
no). "survival" is a binary coding for the alive response (1 =
yes, 0 = no). "size" is the shell height of the animal in
millimeters."time" refers to the temporal block during which the
experiment was conducted (1,2, or 3).Cheng et al Thermal Tolerance
Data.csvSalinity Tolerance Data - GastropodsSalinity tolerance data for
oyster drills (gastropods). Each row is an individual animal and each
column is a variable. "species" refers to Urosalpinx (Atlantic
oyster drill) and Ocenebra (Japanese oyster drill). "salinity"
is the exposure salinity in practical salinity units. "duration"
is the length of exposure in days. "size" is the shell height in
millimeters. "alive" is whether or not the animal survived the
salinity exposure. "survival" is a numerical code for
"alive" where 1 = alive and 0 = death.Cheng et al Salinity
Tolerance Data.csvSalinity Tolerance Data - OystersSalinity tolerance data
for Olympia oysters (Ostrea lurida). Each row is an individual animal and
each column is a variable. "species" refers to oysters
(invariant). "Salinity" is the exposure salinity in practical
salinity units. "size" is the shell height in millimeters.
"alive" is whether the animal survived the salinity exposure
(yes or no). "Survival" is a numerical code for the
"alive" variable (1 = alive, 0 = dead). "Duration" is
the number of days that the animal was exposed to the target
salinity.Cheng et al Salinity Tolerance Data Oysters.csvThermal Growth
High Ration Data - OystersOyster growth data for thermal performance
curve. Each row is an individual oyster and each column is a variable.
"tile" refers to a numbered value assigned to each pvc square
that oysters were settled upon. "tile.side" is the side upon
which the oyster was located (a or b). "oyster.no" is a unique
number assigned to every oyster. "tank" is the number assigned
to each 38 liter tank during the experiment. "temp" is the
temperature in degrees Celsius. "initial.area" is the shell area
centimeters squared for that oyster at the beginning of the experiment.
"area" is the final area in centimeters squared after the
temperature exposure.Cheng et al Oyster Growth High Ration.csvThermal
Growth Low Ration Data - OystersGrowth data for low ration oyster
experiment. Each row is an individual animal and each column is a
variable. "food.ration" is low (invariant). "tile"
refers to the pvc plate that each oyster is assigned to.
"initial.area" is the size in centimeters squared for the oyster
at the beginning of the experiment. "final.area" is the oyster
size in centimeters squared at the end of the experiment.
"group" is a numerical code for the temperature treatment.
"temp" is the temperature that the oysters were assigned to in
degrees Celsius. "growth" is the difference between the final
and initial size in centimeters squared. "cum.growth" is the
cumulative growth for each tile in centimeters squared.Cheng et al Oyster
Growth Low Ration.csvThermal Growth High Ration Data - GastropodsThermal
growth data for the gastropods under high ration availability. Each row is
an individual animal and each column is a variable. "species" is
either Atlantic drill (Urosalpinx cinerea) or Japanese drill (Ocenebra
inornata). "snail.no" is a unique number given to every
experimental snail. "teaball" is a number given to each housing.
"temperature" is the water temperature that each snail was
exposed to in degrees Celsius. "tank" is the tank number that
each teaball was housed in. "alive" is a numerical code for
whether or not the snail survived the experiment (1 = alive, 0 = dead).
"initial.sh" is the shell height of each snail at the beginning
of the experiment in millimeters. "final.sh" is the shell heigh
of each snail at the end of the experiment in millimeters.
"final.sh.width" is the shell width (at widest point) at the end
of the experiment. "notes" are given for a subset of
snails.Cheng et al Gastropod Growth High Ration.csvEnvironmental Data
Tomales - Middle BayPhysical environmental data from "Middle
Bay" site within Tomales Bay, CA. Data was collected with a YSI
6920V2 sonde deployed at latitude 38.150328 degrees and longitude
-122.905767 degrees. Data collection began on November 24, 2010 and ended
on January 16, 2014. Each row is an observation and each column is a
variable. "date" is the date in month/day/year format.
"time" is the local time in hour:minute:second format.
"DateTimeStamp" is a concatenated string of "date" and
"time". "temp" is the water temperature in degrees
Celsius. "spcond" is the specific conductivity in millisiemens
per centimeter. "salinity" is the calculated salinity from
specific conductivity in practical salinity units. "pH" is the
water column pH in total scale. "do.sat" is the dissolved oxygen
in percent saturation. "do.mgl" is the dissolved oxygen in
milligrams per liter.Cheng et al Environmental Data.csvEnvironmental Data
Tomales - Inner BayEnvironmental data from Tomales Bay, CA. Temperature
data collected with an iButton data logger (DS-1922L). Logger was deployed
at 0.0 meters above mean lower low water level at latitude 38.115117
degrees and longtitude -122.870695 degrees. "date.time" is the
date and time in month/dat/year hour:minute format. "oday" is
the ordinal day. "tide.time" is the time of sea level
measurements. "aerial.exposure" is whether the sensor is
estimated to be in air or water given the tide. "water.temp" is
the temperature of the water in degrees Celsius. "air.temp" is
the temperature of the air in degrees Celsius.Cheng et al Environmental
Data Inner Bay.csv
Tomales Bay California USA
San Francisco Bay California USA