Factors associated with local and statewide population trends of the Florida Sandhill Crane (Antigone canadensis pratensis)

Breeding Bird Survey (BBS) data indicate that the Florida population of the nonmigratory Florida Sandhill Crane (Antigone canadensis pratensis) has been increasing for 50 years despite substantial habitat loss and a recent period of extended drought. We generated BBS route-specific population trends...

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Autores principales:	W Andrew. Cox, Timothy A. Dellinger, Richard Kiltie, Brittany Bankovich, Brett Tornwall
Formato:	article
Lenguaje:	EN
Publicado:	Resilience Alliance 2020
Materias:	<span style="font-style:normal">antigone canadensis</span> drought land use change population trends productivity sandhill crane Plant culture SB1-1110 Environmental sciences GE1-350 Plant ecology QK900-989
Acceso en línea:	https://doaj.org/article/8076dd72ef5b4542ad5a729ee5e17327
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spelling	oai:doaj.org-article:8076dd72ef5b4542ad5a729ee5e173272021-12-02T11:55:12ZFactors associated with local and statewide population trends of the Florida Sandhill Crane (Antigone canadensis pratensis)1712-6568https://doaj.org/article/8076dd72ef5b4542ad5a729ee5e173272020-06-01T00:00:00Zhttp://www.ace-eco.org/vol15/iss1/art7/https://doaj.org/toc/1712-6568Breeding Bird Survey (BBS) data indicate that the Florida population of the nonmigratory Florida Sandhill Crane (Antigone canadensis pratensis) has been increasing for 50 years despite substantial habitat loss and a recent period of extended drought. We generated BBS route-specific population trends for 1966-2016 to identify locations in Florida that had experienced significant increases or declines to better understand the statewide population growth. We also assessed whether changes in land cover over time were correlated with local increases or decreases in the Sandhill Crane population. Finally, we explored how drought during the breeding season affected the number of cranes detected during the BBS and the number of young cranes detected in a fall post-reproductive survey we conducted during 1991-2016. Of the 42 BBS routes on which cranes were observed in ≥ 4 years, populations increased on 17 (40%) and declined on one (2%), and no change was detected on 24 (57%). Routes with positive population growth occurred throughout the breeding range, with one hot spot of growth occurring in the northwest region of central Florida. Change in five primary land cover types (grassland, wetland, scrub/successional, woodland, urban) during 1985-2016 did not predict changes in Sandhill Crane populations. Drought conditions during a prior year's breeding season were negatively correlated with BBS counts, and within-season drought conditions were negatively correlated with juvenile crane counts on the post-reproductive surveys. Productivity rates in all but the driest years were similar to those associated with stable or growing crane populations. Continued monitoring is warranted because the longevity of adult cranes could mask an impending population decline and because little is known about the cranes that reside in the suburban landscapes that make up an increasingly large proportion of Florida's landscapes.W Andrew. CoxTimothy A. DellingerRichard KiltieBrittany BankovichBrett TornwallResilience Alliancearticle<span style="font-style:normal">antigone canadensis</span>droughtland use changepopulation trendsproductivitysandhill cranePlant cultureSB1-1110Environmental sciencesGE1-350Plant ecologyQK900-989ENAvian Conservation and Ecology, Vol 15, Iss 1, p 7 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	<span style="font-style:normal">antigone canadensis</span> drought land use change population trends productivity sandhill crane Plant culture SB1-1110 Environmental sciences GE1-350 Plant ecology QK900-989
spellingShingle	<span style="font-style:normal">antigone canadensis</span> drought land use change population trends productivity sandhill crane Plant culture SB1-1110 Environmental sciences GE1-350 Plant ecology QK900-989 W Andrew. Cox Timothy A. Dellinger Richard Kiltie Brittany Bankovich Brett Tornwall Factors associated with local and statewide population trends of the Florida Sandhill Crane (Antigone canadensis pratensis)
description	Breeding Bird Survey (BBS) data indicate that the Florida population of the nonmigratory Florida Sandhill Crane (Antigone canadensis pratensis) has been increasing for 50 years despite substantial habitat loss and a recent period of extended drought. We generated BBS route-specific population trends for 1966-2016 to identify locations in Florida that had experienced significant increases or declines to better understand the statewide population growth. We also assessed whether changes in land cover over time were correlated with local increases or decreases in the Sandhill Crane population. Finally, we explored how drought during the breeding season affected the number of cranes detected during the BBS and the number of young cranes detected in a fall post-reproductive survey we conducted during 1991-2016. Of the 42 BBS routes on which cranes were observed in ≥ 4 years, populations increased on 17 (40%) and declined on one (2%), and no change was detected on 24 (57%). Routes with positive population growth occurred throughout the breeding range, with one hot spot of growth occurring in the northwest region of central Florida. Change in five primary land cover types (grassland, wetland, scrub/successional, woodland, urban) during 1985-2016 did not predict changes in Sandhill Crane populations. Drought conditions during a prior year's breeding season were negatively correlated with BBS counts, and within-season drought conditions were negatively correlated with juvenile crane counts on the post-reproductive surveys. Productivity rates in all but the driest years were similar to those associated with stable or growing crane populations. Continued monitoring is warranted because the longevity of adult cranes could mask an impending population decline and because little is known about the cranes that reside in the suburban landscapes that make up an increasingly large proportion of Florida's landscapes.
format	article
author	W Andrew. Cox Timothy A. Dellinger Richard Kiltie Brittany Bankovich Brett Tornwall
author_facet	W Andrew. Cox Timothy A. Dellinger Richard Kiltie Brittany Bankovich Brett Tornwall
author_sort	W Andrew. Cox
title	Factors associated with local and statewide population trends of the Florida Sandhill Crane (Antigone canadensis pratensis)
title_short	Factors associated with local and statewide population trends of the Florida Sandhill Crane (Antigone canadensis pratensis)
title_full	Factors associated with local and statewide population trends of the Florida Sandhill Crane (Antigone canadensis pratensis)
title_fullStr	Factors associated with local and statewide population trends of the Florida Sandhill Crane (Antigone canadensis pratensis)
title_full_unstemmed	Factors associated with local and statewide population trends of the Florida Sandhill Crane (Antigone canadensis pratensis)
title_sort	factors associated with local and statewide population trends of the florida sandhill crane (antigone canadensis pratensis)
publisher	Resilience Alliance
publishDate	2020
url	https://doaj.org/article/8076dd72ef5b4542ad5a729ee5e17327
work_keys_str_mv	AT wandrewcox factorsassociatedwithlocalandstatewidepopulationtrendsofthefloridasandhillcraneantigonecanadensispratensis AT timothyadellinger factorsassociatedwithlocalandstatewidepopulationtrendsofthefloridasandhillcraneantigonecanadensispratensis AT richardkiltie factorsassociatedwithlocalandstatewidepopulationtrendsofthefloridasandhillcraneantigonecanadensispratensis AT brittanybankovich factorsassociatedwithlocalandstatewidepopulationtrendsofthefloridasandhillcraneantigonecanadensispratensis AT bretttornwall factorsassociatedwithlocalandstatewidepopulationtrendsofthefloridasandhillcraneantigonecanadensispratensis
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Factors associated with local and statewide population trends of the Florida Sandhill Crane (Antigone canadensis pratensis)

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