Authors

Kandice Starr

Document Type

Internship Report

Publication Date

Spring 2016

Abstract

Everglades National Park (ENP), established in December 1947, has collected recreational fishing data since 1958. By gathering information about where an angler fished, what species and how many individual fish were caught, as well as collecting lengths of harvested fish, biologists can examine trends in a particular species life history and abundance. These trends can then be used to implement new or update old regulations. Centropomus undecimalis (common snook) is one of the most sought after fish by anglers within ENP. By analyzing data from fishing guide logbook reports, CREEL interviews and fork lengths of harvested fish, trends within the population were examined. Trends in abundance of the population determined there was a significant effect on the population from the 2010 cold snap (p<0.001) and potentially the escalation of salinity levels in 2014. The ANOVA also determined significant differences (p=0.019) in the fork lengths of harvested C. undecimalis between 2005 and 2014. The decrease in average fork length of the harvested individuals potentially correlate to the south Florida cold event of 2010. Although the results for trends in both the abundance and lengths do not show significance for 2014, continuation of monitoring the population for significant changes may be vital for the conservation of the individual snook within ENP due to climate change surges in temperature and salinity levels.

Comments

Department: MES

MPS Track: MCO

Location: Everglades National Park

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