COVID19-induced reduction in human disturbance enhances fattening of an overabundant goose species.
COVID19-induced reduction in human disturbance enhances fattening of an overabundant goose species.
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COVID 19诱导的人类干扰减少增强了过度丰富的鹅物种的育肥。
DOI：
10.1016/j.biocon.2021.108968
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发表时间：
2021-03
影响因子：
5.9
通讯作者：
Legagneux P
中科院分区：
文献类型：
--
作者：
LeTourneux F;Grandmont T;Dulude-de Broin F;Martin MC;Lefebvre J;Kato A;Bêty J;Gauthier G;Legagneux P
物种过多会对它们的栖息地产生重大影响，并在生态系统内引起营养级联。在北美，自 1999 年以来，通过特殊的春季狩猎规定成功控制了大雪雁（Anser caerulescens atlanticus）的数量。狩猎是死亡的一个来源，但也是干扰的来源，它影响了雪雁的行为和营养储存动态。 2020 年，新冠病毒大流行实施的封锁使它们在魁北克迁徙停留期间的狩猎活动减少了至少 31%。这提供了一个独特的机会来评估狩猎干扰突然减少对鹅的影响。我们利用体重的长期数据以及 2019 年和 2020 年 GPS 跟踪鸟类的运动数据来评估 2020 年封锁对大雪雁春季身体状况和行为的影响。 2020 年的身体状况高于自 1999 年春季狩猎开始以来的所有年份（除 2019 年外）。然而，2020 年鹅在分阶段期间比任何其他年份更早达到最大身体状况，与 2019 年相比，在春末高利润但有风险的农业栖息地觅食的时间减少了一半。尽管我们的研究并非旨在评估封锁的影响，但 2020 年相关干扰的减少支持了这一假设那个 与狩猎相关的干扰会对鹅的觅食效率和身体状况产生负面影响。由于春季的身体状况与随后的繁殖成功有关，因此封锁可能会提高这个过剩种群的生产力。
Overabundant species can have major impacts on their habitat and induce trophic cascades within ecosystems. In North America, the overabundant greater snow goose (Anser caerulescens atlanticus) has been successfully controlled through special spring hunting regulations since 1999. Hunting is a source of mortality but also of disturbance, which affects the behavior and nutrient storage dynamics of staging snow geese. In 2020, the lockdown imposed by the COVID19 pandemic reduced hunting activity during their migratory stopover in Québec by at least 31%. This provided a unique opportunity to assess the effects of a sudden reduction in hunting disturbance on geese. We used long-term data on body mass combined with movement data from GPS-tracked birds in 2019 and 2020 to assess the effects of the 2020 lockdown on the spring body condition and behavior of greater snow geese. Body condition was higher in 2020 than in all years since the inception of spring hunting in 1999, except for 2019. However, in 2020 geese reached maximal body condition earlier during the staging period than in any other year and reduced by half time spent feeding in highly profitable but risky agricultural habitat in late spring compared to 2019. Although our study was not designed to evaluate the effects of the lockdown, the associated reduction in disturbance in 2020 supports the hypothesis that hunting-related disturbance negatively affects foraging efficiency and body condition in geese. Since spring body condition is related to subsequent breeding success, the lockdown could increase productivity in this overabundant population.
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影响因子：
5.7
作者：
Dokter, Adriaan M.;Fokkema, Wimke;Nolet, Bart A.
通讯作者：
Nolet, Bart A.
DOI：
10.1139/z96-107
发表时间：
1996-05-01
期刊：
CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE
影响因子：
--
作者：
Giroux, JF;Bergeron, R
通讯作者：
Bergeron, R
影响因子：
5.7
作者：
Béchet, A;Giroux, JF;Hines, JE
通讯作者：
Hines, JE
DOI：
10.1080/00288330.2005.9517323
发表时间：
2005-01-01
影响因子：
1.6
作者：
Castro, M;Araújo, A;Monteiro, P
通讯作者：
Monteiro, P
影响因子：
5.7
作者：
Béchet, A;Giroux, JF;Gauthier, G
通讯作者：
Gauthier, G