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Table 3 Mean ± standard deviation river distance (km) detected within the estuary from the mouth of the Shark River, Florida, USA for acoustically tagged American alligators (Alligator mississippiensis) during 2016–2018

From: Variation in movement behavior of alligators after a major hurricane

Transmitter2017 hurricane20162018
60 days
Before
60 days
After
4 days
During
BeforeAfterBeforeAfter
5425224.4 ± 0.124.3 ± 0.024.3 ± 0.024.4 ± 0.124.4 ± 0.224.3 ± 0.024.3 ± 0.0
5425310.1 ± 0.910.8 ± 0.3e,a10.9 ± 0.0b10.3 ± 0.510.5 ± 0.4
5425410.6 ± 3.810.6 ± 3.9e16.1 ± 0.8c10.6 ± 5.19.4 ± 4.5
5425524.3 ± 0.024.3 ± 0.024.3 ± 0.024.4 ± 0.224.4 ± 0.2
542607.9 ± 2.28.9 ± 1.6e12.9 ± 1.4d10.1 ± 1.09.9 ± 1.18.9 ± 1.19.8 ± 2.0
  1. Before and after in 2016 and 2018 correspond to the same 60-day timeframes in 2017. Some animals were not tracked these years. During the hurricane was defined as the 4-day period where environmental conditions within the estuary were rapidly changing (see [24]). All comparisons were two-sample t tests with α = 0.05
  2. aLinear distance range across the estuary (i.e., length of river occupied) differed after the hurricane
  3. bToo few observations during the hurricane to compare to other times
  4. cMean distances after were less than during the hurricane
  5. dMean distances before were less than during the hurricane
  6. eMean distances before and after the hurricane were significantly different