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Wild turkey movements during flooding after opening of the Morganza Spillway, Louisiana

机译：路易斯安那州Morganza溢洪道开放后洪水期间的野火鸡运动

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The opening of the Morganza Spillway in Louisiana on 18 May 2011 to relieve historic flooding along the lower Mississippi river subsequently inundated thousands of acres of bottomland forest in the Atchafalaya basin. Since 2001, we have conducted Meleagris gallopavo silvestris (Eastern Wild Turkey) population ecology research on the Sherburne Wildlife Management Area, located approximately 30 km south of the Morganza spillway. In expectation of the Morganza spillway opening, between 11 and 14 May, we captured and fitted 5 (1 M, 4 F) adult Eastern Wild Turkeys with GPS transmitters to monitor turkey response to basin flooding. By 19 May 2011, our study area was inundated with >3 m of flood waters, and remained completely inundated until 11 June 2011. Via radio-telemetry, we confirmed one female was depredated immediately before flood waters inundated our study site, and one female survived and reached dry ground created by receding water on 16 June. A second female lived 21 days and made circuitous movements within the tree canopy before dying, and the lone male died after 31 days. Movements of the second female through the canopy during flooding suggested a deliberate search for topographically higher areas within her range. Our findings suggest that rapid, widespread flooding conditions created by opening of the Morganza spillway likely negatively affected Wild Turkey populations across the Atchafalaya basin through direct reductions in survival. Further research is needed to assess how flood mitigation efforts affect Wild Turkey populations in floodplains along the Mississippi River and other alluvial floodplains.
机译：2011年5月18日，路易斯安那州的Morganza溢洪道启用，以缓解密西西比河下游的历史性洪灾，随后淹没了Atchafalaya盆地数千英亩的底层森林。自2001年以来，我们在位于Morganza溢洪道以南约30公里的Sherburne野生动物管理区进行了Meleagris gallopavo silvestris（东部野生土耳其）种群生态研究。预期Morganza溢洪道将在5月11日至14日开放，我们捕获并安装了5个（1 M，4 F）成年东部野火鸡，配备GPS发射器，以监测火鸡对流域洪水的反应。到2011年5月19日，我们的研究区域被3m以上的洪水淹没，并一直被完全淹没，直到2011年6月11日。通过无线电遥测，我们确认一名女性在洪水淹没我们的研究地点之前被淘汰。幸存下来，并于6月16日到达因退水而形成的干燥地面。另一位女性活了21天，死前在树冠层内circuit回运动，而孤独的男性在31天后死亡。在洪水期间，第二只雌性穿过树冠的运动表明，有意在其范围内搜寻地形较高的区域。我们的研究结果表明，由Morganza溢洪道的开放造成的快速，广泛的洪水条件可能会通过直接减少生存而对整个Atchafalaya流域的野生土耳其种群造成负面影响。需要进一步的研究来评估缓解洪水的努力如何影响密西西比河沿岸的洪泛区和其他冲积洪泛区中的野生土耳其种群。

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