Filters: Tags: Colonization (X) > Categories: Data (X)
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These data indicate whether a premetamorphic or any life stage of each amphibian species (sierran treefrog Pseudacris sierra, California red-legged frog Rana draytonii, and rough-skinned newt Taricha granulosa) was detected in a survey. These data, combined with the survey data, are necessary for modeling occupancy while accounting for imperfect detection. Surveys for which no detections occurred do not appear in this file, but are in the survey data file (Survey_Data_for_Occupancy_of_Amphibians_in_Northern_California_Coastal_Dune_Drainages_2014_2016).
Categories: Data;
Types: Citation;
Tags: California,
Great Beach,
Point Reyes National Seashore,
amphibian,
coastal dune,
These data describe the maximum water depth in each studied coastal dune drainage in each study year. Water depth is used as a proxy for hydroperiod, and is a good indicator of the relative persistence of surface water among sites that can be collected in a single visit.
Categories: Data;
Types: Citation;
Tags: California,
Great Beach,
Point Reyes National Seashore,
amphibian,
coastal dune,
These data describe the date, time (night vs. day), observer, and air temperature of each amphibian occupancy survey conducted in coastal dune drainages from 2014 through 2016. Survey-specific covariates explain patterns in detection probabilities among surveys, thereby reducing bias in occupancy models and improving future surveys.
Categories: Data;
Types: Citation;
Tags: California,
Great Beach,
Point Reyes National Seashore,
amphibian,
coastal dune,
Fish colonization ability may be one factor affecting population resilience after disturbance. We conducted displacement experiments in headwater streams in Wyoming, U.S.A. to evaluate mottled sculpin (Cottus bairdii) and mountain sucker (Catostomus platyrhynchus) colonization ability. Specifically, we (1) determined if fish could colonize sites rapidly after displacement, (2) evaluated site-level factors affecting colonization, and (3) compared species-level differences in movement and colonization capabilities. For the colonization experiment, we removed fish from 31 experimental 100 m reaches to create an experimental displacement and examined short-term colonization dynamics in relation to initial fish abundance...
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