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Nest predation pressure on Chinese Bulbuls decreases along the urbanization gradient in Hangzhou,China

Avian Research 2022年第3期13卷 294-300页

作者： Xingmin chen Qin Zhang Sisi Lan shuihua chen Yanping Wang Laboratory of Island Biogeography and Conservation Biology College of Life SciencesNanjing Normal UniversityNanjing210023China College of Chemistry and Life Sciences Zhejiang Normal UniversityJinhu1321004China Zhejiang Museum of Natural History Hangzhou310012China

Nest predation is an essential factor affecting bird population density,reproductive ecology and life ***,there are still contradictory results about how nest predation pressure changes with *** of the reasons for the controversy is that previous studies often use artificial nests to investigate nest predation,but the result of artificial nests is often biased and contrary to that of natural ***,it is important to perform nest predation experiments simultaneously with both natural and artificial *** this study,we examined the change of nest predation pressure on the Chinese Bulbul(Pycnonotus sinensis)along the urbanization gradient in Hangzhou,*** detected 148 natural nests of Chinese Bulbuls and continuously monitored them in two continuous breeding seasons from 2012 to *** the breeding season,we placed artificial eggs in natural nests of Chinese Bulbuls to investigate the changes in nest predation pressure and used infrared cameras to record the *** then calculated the urbanization synthetic index(USI)as the measure of the degree of urbanization and examined its relationship with nest predation *** found that no matter whether natural nests or artificial eggs were used,the nest predation pressure always decreased significantly with the degree of *** average height of shrubs within 10 m of the nest differed significantly between the predated and unpredated nests,which also affected the risk of nest *** study highlights the importance of using natural and artificial nests simultaneously to conduct nest predation experiments,which can reduce the bias or errors caused by only using artificial *** also recommend the use of infrared cameras in future nest predation studies,which has obvious advantages in monitoring and identifying potential predators.

关键词： Artificial nest Natural nest Nest predation Shrub height Urbanization

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Does nest sanitation elicit egg rejection in an open-cup nesting cuckoo host rejecter?

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Avian Research 2018年第4期9卷 294-298页

作者： Tongping Su Chanchao Yang shuihua chen Wei Liang Zhejiang Museum of Natural History Hangzhou 310014China Ministry of Education Key Laboratory for Ecology of Tropical Islands College of Life SciencesHainan Normal UniversityHaikou 571158China

Background: Nest sanitation behavior is one of the most important means to ensure high reproductive efficiency. In avian brood parasitism, nest sanitation behavior may be a pre-adaptation of host birds that allows them to identify the parasitic eggs, so that egg discrimination behavior may have evolved from nest sanitation behavior. However, whether nest sanitation behavior could improve egg rejection in cuckoo hosts was ***: In this study, we investigated the relationship between nest sanitation and egg discrimination behavior in a potential cuckoo host, the Brown-breasted Bulbul(Pycnonotus xanthorrhous) with two experimental groups. In the first group, we added a blue, non-mimetic egg to the nest of the host, while in the second group we added a blue, non-mimetic egg and a peanut ***: The results showed that in the first group, the probability of rejecting the non-mimetic eggs was 53.8%(n = 26 nests). In comparison, all of the Brown-breasted Bulbuls in the second group were able to rapidly remove the peanut shells from the nest, but only 52.6%(n = 19 nests) rejected the non-mimetic eggs. The rejection rates of the non-mimetic eggs in both experimental groups were not significantly ***: Our study indicated that nest sanitation behavior of Brown-breasted Bulbuls did not influence their egg recognition and that egg discrimination ability of Brown-breasted Bulbuls was not directly related to nest sanitation behavior.

关键词： Brood parasitism Brown-breasted Bulbul Egg discrimination Nest sanitation behavior Cuckoo host

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Variation in reproductive life-history traits of Chinese Bulbuls(Pycnonotus sinensis)along the urbanization gradient in Hangzhou,China

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Avian Research 2023年第2期14卷 174-181页

作者： Xingmin chen Qin Zhang Sisi Lan Qin Huang shuihua chen Yanping Wang Laboratory of Island Biogeography and Conservation Biology College of Life SciencesNanjing Normal UniversityNanjing210023China College of Chemistry and Life Sciences Zhejiang Normal UniversityJinhua321004China Zhejiang Museum of Natural History Hangzhou310012China Zhejiang Provincial Museum Hangzhou310007China

Urbanization brings new selection pressures to wildlife living in cities,and changes in the life-history traits of urban species can reflect their responses to such *** date,most of the studies investigating the impacts of urbanization on avian life-history traits are conducted in Europe and North America,while such studies are often lacking in quickly developing countries in Asia(e.g.,China).In this study,we examined the variations in reproductive life-history traits of Chinese Bulbuls(Pycnonotus sinensis)along the urbanization gradient in Hangzhou,*** detected 234 natural nests of Chinese Bulbuls and continuously monitored them in two continuous breeding seasons from 2012 to *** collected data on seven life-history traits(laying date,incubation period,nestling period,clutch size,egg volume,hatching success rate,and fledging success rate).We used infrared cameras to record the number of feedings per hour as the measure of food resources for the *** measured nest predation pressure by monitoring 148 natural breeding nests during breeding seasons and 54 artificial nests immediately after breeding *** then calculated the urbanization synthetic index(USI)as a measure of the level of urbanization and examined its relationship with the seven life-history *** found that Chinese Bulbuls laid eggs significantly earlier with increasing ***,the other six life-history traits did not vary significantly with the ***,the feeding frequency of chicks increased significantly with the USI,but the nest predation pressure of Chinese Bulbuls decreased significantly with the *** food resources and reduced nest predation pressure in cities may lead to earlier laying date of Chinese *** study should test whether the earlier laying date of Chinese Bulbuls is the result of phenotypic plasticity or genetic change.

关键词： Feeding frequency Laying date Life-history trait Nest predation Urbanization Urbanization synthetic index(USI)

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Common blackbirds Turdus merula use anthropogenic structures as nesting sites in an urbanized landscape

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Current Zoology 2015年第3期61卷 435-443页

作者： YanDingWANG Qin HUANG Sisi LAN Qin ZHANG shuihua chen The Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education College of Life Sciences Zhejiang University Hangzhou 310058 China Zhejiang Museum of Natural History Hangzhou 310014 China College of Chemistry and Life Sciences Zhejiang Normal University Jinhua 321004 China

The common blackbird Turdus merula is one of the most highly urbanized bird species. However, to date, the use of anthropogenic structures as nesting sites in the common blackbird is rarely documented, and the factors influencing its use of the anthropogenic structures as nesting sites remain unclear. In this study, we systematically quantified and determined the factors in- fluencing the use of anthropogenie structures as nesting sites in common blackbirds in a highly urbanized city of Hangzhou, Chi- na. We searched for nests of common blackbirds during four breeding seasons from 2010 to 2013. Among the 60 nests found, 34 nests were in anthropogenic structures such as wall ledges, air condition mounts, window canopies, cable poles, guardrails, eaves, balcony frames, flowerpots and flower shelves on balconies. We found that the available anthropogenic nest sites and the availa- ble nesting trees were main factors determining the use of anthropogenic structures as nesting sites in common blackbirds. In ur- ban environments, the amount of available anthropogenic nesting sites increased significantly, whereas the number of natural nesting sites reduced greatly. Our results suggest that common blackbirds can adjust their nest sites in response to urbanization and such nesting behavior shifts may aid them to colonize urban environments. From a management viewpoint, our results indi- cate that behavioral flexibility should be taken into account for effective urban wildlife management and conservation

关键词： Adaptation Anthropogenic nest Behavioral flexibility Colonization Urbanization

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Anthropogenic nesting materials and reproductive performance of Chinese Bulbuls(Pycnonotus sinensis)along the urbanization gradient in Hangzhou,China

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Avian Research 2024年第4期15卷 431-437页

Urbanization induced by human activities presents both challenges and adaptive opportunities for *** notable impact of urban sprawl is the vast amount of waste it produces,which has discernible effects on ***,an emerging trend has been observed that birds are incorporating anthropogenic materials into their ***,the relationship between anthropogenic nesting materials(ANMs)and the reproductive performance of urban birds is *** this study,we investigated the relationship between the incorporation of ANMs into nests and the reproductive performance of Chinese Bulbuls(Pycnonotus sinensis)by monitoring and collecting data on 136 breeding nests in Hangzhou,*** gathered data on seven reproductive traits of Chinese Bulbuls,including laying date,incubation period,nestling period,clutch size,egg volume,hatching success rate,and fledging success *** then calculated the urbanization synthetic index as a measure of the level of urbanization and examined its relationship with the proportion and weight of *** examination of nest components,we observed significant increase in the proportion and weight of ANMs with the urbanization synthetic ***,we found a higher hatching success rate of Chinese Bulbuls with an increasing proportion of ***,the inclusion of ANMs in nests was not correlated with other reproductive traits of Chinese ***,the use of ANMs by Chinese Bulbuls is consistent with the adaptive hypothesis and the availability *** studies should use controlled experiments to investigate the impact of ANMs on avian reproductive success.

关键词： Adaptive hypothesis Anthropogenic nesting materials Availability hypothesis Hatching success Reproductive traits Urbanization

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Bird community patterns in response to the island features of urban woodlots in eastern China

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Frontiers in Biology 2006年第4期1卷 448-454页

作者： chen shuihua DING Ping ZHENG Guangmei WANG Yujun Zhejiang Museum of Natural History Hangzhou 310012China College of Life Science Zhejiang UniversityHangzhou 310028China College of Life Science Beijing Normal UniversityBeijing 100875China Hangzhou Forestry Resource Administration Station Hangzhou 310009China

Many studies have demonstrated the changes in the spatial patterns of plant and animal communities with respect to habitat *** communities tend to exhibit some special patterns in connection with the characteristics of island *** this paper,the relationships between richness,assemblage,and abundance of bird communities with respect to island features were analyzed in 20 urban woodlots in Hangzhou,*** investigations of bird communities,using the line transect method,were conducted from January to December,*** woodlot was surveyed 16 times during the *** indicated that bird richness was higher,per unit area,in the smaller woodlots than the larger ones,and overall bird density decreased with the increase in the size of ***,the evenness of species abundance increased with the area,and small woodlots were usually dominated by higher density species and large woodlots by medium density *** species occurring in the small woodlots also occurred in larger ***,bird communities among urban woodlots showed a nestedness pattern in *** patterns implied that the main impacts of woodland habitat fragmentation are:(1)species are constricted and thus species number will increase at a given sample size;(2)as surface area decreases,the proportion of forest edge species as to interior species will increase;(3)community abundance will therefore increase per unit area but most individuals will be from a few dominant species;and(4)overall species diversity will decrease at a habitat level as well as at a region *** patterns of community in response to the island features were therefore summarized as“island effects in community”.The underlying processes of such observations were also examined in this *** area,edge ratio,isolation,and habitat nestedness were considered as the important factors forming the island effects in *** heterogeneity between habitats usually contri

关键词： urban woodlot bird community island habitat island effect

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The Breeding Ecology of a Critically Endangered Salamander,Hynobius amjiensis(Caudata：Hynobiidae),Endemic to Eastern China

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Asian Herpetological Research 2016年第1期7卷 53-58页

作者： Cangsong chen Jia YANG Yunke WU Zhongyong FAN Weiwei LU shuihua chen Lipeng YU College of Agriculture and Biotechnology Zhejiang University Hangzhou 310012 Zhejiang China Zhejiang Museum of Natural History Hangzhou 310014 Zhejiang China Department of Ecology and Evolutionary Biology Cornell University Ithaca 14853 New York USA The Administration Bureau of Longwangshan Natural Reserve Anji 313301 Zhejiang China

Hynobius amjiensis is a critically endangered salamander species（IUCN Red List） endemic to eastern China. It currently has three known populations： one in Longwangshan, Zhejiang Province（type locality）, and two in Qingliangfeng between Anhui and Zhejiang Provinces. We examined the relatively unstudied breeding ecology of this species in the field and at laboratory from March 2007 to May 2014. Adult males and females were year-round terrestrial, except for the February–April breeding season. During this period, we captured only a total of 16 breeding adults（11 males and 5 females）. As few as 100 breeding females were estimated based on the number of egg sacs observed since 2007. This number was significantly reduced from the estimated number between 1992 and 1998. Males（mean total length = 16.21 cm, mean body mass = 18.8 g） were slightly smaller than females（16.51 cm, 19.2 g）. Size of breeding pools ranged from 0.2 m-2 to 1.2 m-2（0.1–1.2 m depths）. Each female deposits a pair of egg sacs by attaching the adhesive tips of the sacs to aquatic plants or dead twigs. Fifteen pairs of egg sacs had an average length of 28.6 cm and a diameter of 3.3 cm. On average, each egg sac contained 75 eggs with a diameter of 0.3 cm. Our field survey revealed that H. amjiensis used oviposition sites in small, cool, and weakly acidic pools at high elevations（1 300–1 600 m） where peat moss was abundant. Reduction in wetland size and disappearance of suitable breeding pools suggest that this salamander species is under threat of extinction, particularly at Longwangshan, where 5 of the 9 breeding pools have either dried up or disappeared. Combined size of the remaining 4 pools is less than 2 m-2. We urge immediate implementation of more effective conservation measures and suggest that preservation priority should be given to habitat that contains suitable breeding pools.

关键词： Amji's salamander oviposition site reproductive traits population decline habitat destruction preservation priority

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The phylogenetic position and genetic evidence of hybridization of the world’s most endangered tern,the Chinese Crested Tern Thalasseus bernsteini

The phylogenetic position and genetic evidence of hybridizat...

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第七届浙江省生物多样性保护研讨会

作者： Jia Yang Guoling chen Leyang Yuan Qin Huang Zhongyong Fan Yiwei Lu Yang Liu shuihua chen ZhejiangMuseumofNaturalHistory StateKeyLaboratoryofBiocontrol SchoolofLifeSciencesSunYat-senUniversity

Determining the phylogenetic relationship among species is central to understanding their evolutionary and conservation ***,the phylogenetic position of threatened species,such as th

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海鸟种群的人工招引与恢复技术及其应用

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生物多样性 2017年第4期25卷 364-371页

作者：周晓陈东东 Stephen W.Kress 陈水华浙江师范大学化学与生命科学学院浙江金华321004 Seabird Restoration Program National Audubon Society 浙江自然博物馆杭州310014

全球多数海鸟种群处于受胁状态。针对这一状况,鸟类学家根据海鸟的繁殖习性,借助于人工招引技术恢复海鸟的种群及营建适宜的栖息地。海鸟人工招引技术主要包括社群吸引技术和雏鸟转移技术两大类。社群吸引技术是在人为选择和改造的栖息... 详细信息

全球多数海鸟种群处于受胁状态。针对这一状况,鸟类学家根据海鸟的繁殖习性,借助于人工招引技术恢复海鸟的种群及营建适宜的栖息地。海鸟人工招引技术主要包括社群吸引技术和雏鸟转移技术两大类。社群吸引技术是在人为选择和改造的栖息地内利用假鸟模型和声音回放吸引附近海鸟前来栖息的方法;雏鸟转移是将恢复种群的雏鸟转移到改造好的栖息地内,利用海鸟的成长地依赖性,促使其在繁殖期主动回到生长地繁殖。这两种方法已在全世界16个国家和地区的64种海鸟,一共171多个招引项目中得到了应用。在具体应用中,应该因地制宜,针对不同的海鸟种类和繁殖习性选择合适的方法,可单独或结合使用。不论采用何种方法,都应开展充分的前期研究,选择并营造适宜的繁殖栖息地,严格控制天敌,密切监测,及时排除威胁因素,确保繁殖成功。我国沿海繁殖海鸟正面临多种威胁,海鸟种群缩小和栖息地丧失严重,海鸟人工招引技术的应用为我国沿海繁殖海鸟种群及其栖息地的恢复带来了希望。

关键词：海鸟繁殖栖息地种群恢复社群吸引技术雏鸟转移

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在浙博看未来:后疫情时代的博物馆恢复与高质量发展

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艺术博物馆 2022年第3期 12-16页

作者：陈水华浙江省博物馆浙江杭州310000

2021年5月18日是第45个国际博物馆日,今年的主题为“博物馆的未来:恢复与重塑”。在世界范围内疫情常态化防控的背景下,博物馆如何应对多重挑战,及时调整完善自身功能定位与发展方向,积极探索新发展、新模式、新方案,是全球博物馆普遍... 详细信息

2021年5月18日是第45个国际博物馆日,今年的主题为“博物馆的未来:恢复与重塑”。在世界范围内疫情常态化防控的背景下,博物馆如何应对多重挑战,及时调整完善自身功能定位与发展方向,积极探索新发展、新模式、新方案,是全球博物馆普遍要思考和面临的问题。本文就浙江省博物馆自身情况、在疫情时代中面临的困境进行讨论,延伸至后疫情时代博物馆存在的一些机遇及挑战、博物馆应该有哪些对策,以及浙江省博物馆面对机遇和挑战做了哪些探索和实践。

关键词：后疫情时代博物馆对策

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