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Population Dynamics of Wood Storks in North and Central Florida, USA

The population size and stability of 14 Wood Stork (Mycteria americana) colonies in north and central Florida were monitored during 1981-1985. Individual colonies ranged in size from 29 to 456 nests (x̄ ± sd = 125.8 ± 18.36 nests), but exhibited considerable intercolony (cv = 73.1-101.6%) and intrac...

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Published in:Colonial waterbirds 1987-01, Vol.10 (2), p.151-156
Main Authors: Rodgers, James A., Wenner, Anne S., Schwikert, Stephen T.
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description The population size and stability of 14 Wood Stork (Mycteria americana) colonies in north and central Florida were monitored during 1981-1985. Individual colonies ranged in size from 29 to 456 nests (x̄ ± sd = 125.8 ± 18.36 nests), but exhibited considerable intercolony (cv = 73.1-101.6%) and intracolony (cv = 11.3-158.9%) variation in size. The mean (±sd) intracolony reproductive rate ranged from 0.21 ± 0.42 to 1.54 ± 0.27 fledglings per nest. There appears to be little correlation within colonies among number of nests, reproductive rate, and precipitation. The 14 colony-population averaged 1760.8 ± 255.7 nests/year. Although there was much interyear-intracolony variation during the 5-year period, the north-central Florida stork population as a whole appears relatively stable (cv = 17.2%). /// Se estudiaron el tamaño de la población y la estabilidad de 14 colonias de Cigüeña Maderera (Mycteria americana) en el centro y norte de la Florida de 1981-1985. Las colonies individuales variaron en tamaño de 29-456 nidos (x̄ ± desviación standard = 125.8 ± 18.36 nidos), pero hubo una significativa variatión de tamaño entre las colonias (cv=73.1-101.6%) y tambien dentro de las colonias (cv=11.3-158.9%). El promedio (±d.s.) de la velocidad de reproducción dentro de las colonias varió de 0.21 ± 0.42 a 1.54 ± 0.27 pajaritos por nido. Parece naber es casa correlación entre el número de nidos, la velocidad de reproducción y la precipitación que afectó las colonias. El total de la población de las 14 colonias promedió 1760.8 ± 255.7 nidos por año. A pesar de haber mucha variación anual dentro de cada colonia durante el periodo de 5 años, la totalidad de la población de cigüeñas del centro y norte de la Florida parece ser relativamente estable (cv=17.2%).
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Individual colonies ranged in size from 29 to 456 nests (x̄ ± sd = 125.8 ± 18.36 nests), but exhibited considerable intercolony (cv = 73.1-101.6%) and intracolony (cv = 11.3-158.9%) variation in size. The mean (±sd) intracolony reproductive rate ranged from 0.21 ± 0.42 to 1.54 ± 0.27 fledglings per nest. There appears to be little correlation within colonies among number of nests, reproductive rate, and precipitation. The 14 colony-population averaged 1760.8 ± 255.7 nests/year. Although there was much interyear-intracolony variation during the 5-year period, the north-central Florida stork population as a whole appears relatively stable (cv = 17.2%). /// Se estudiaron el tamaño de la población y la estabilidad de 14 colonias de Cigüeña Maderera (Mycteria americana) en el centro y norte de la Florida de 1981-1985. 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Individual colonies ranged in size from 29 to 456 nests (x̄ ± sd = 125.8 ± 18.36 nests), but exhibited considerable intercolony (cv = 73.1-101.6%) and intracolony (cv = 11.3-158.9%) variation in size. The mean (±sd) intracolony reproductive rate ranged from 0.21 ± 0.42 to 1.54 ± 0.27 fledglings per nest. There appears to be little correlation within colonies among number of nests, reproductive rate, and precipitation. The 14 colony-population averaged 1760.8 ± 255.7 nests/year. Although there was much interyear-intracolony variation during the 5-year period, the north-central Florida stork population as a whole appears relatively stable (cv = 17.2%). /// Se estudiaron el tamaño de la población y la estabilidad de 14 colonias de Cigüeña Maderera (Mycteria americana) en el centro y norte de la Florida de 1981-1985. Las colonies individuales variaron en tamaño de 29-456 nidos (x̄ ± desviación standard = 125.8 ± 18.36 nidos), pero hubo una significativa variatión de tamaño entre las colonias (cv=73.1-101.6%) y tambien dentro de las colonias (cv=11.3-158.9%). El promedio (±d.s.) de la velocidad de reproducción dentro de las colonias varió de 0.21 ± 0.42 a 1.54 ± 0.27 pajaritos por nido. Parece naber es casa correlación entre el número de nidos, la velocidad de reproducción y la precipitación que afectó las colonias. El total de la población de las 14 colonias promedió 1760.8 ± 255.7 nidos por año. A pesar de haber mucha variación anual dentro de cada colonia durante el periodo de 5 años, la totalidad de la población de cigüeñas del centro y norte de la Florida parece ser relativamente estable (cv=17.2%).</abstract><pub>E. O. Painter Printing Co</pub><doi>10.2307/1521253</doi><tpages>6</tpages></addata></record>
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source JSTOR Archival Journals and Primary Sources Collection
subjects Animal nesting
Breeding
Censuses
Freshwater
Lakes
Mycteria americana
Pelicans
Population dynamics
Population size
Reproductive success
Storks
The Ecology and Conservation of Storks
Wildlife ecology
title Population Dynamics of Wood Storks in North and Central Florida, USA
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