Birds and their habitat conditions in reed marshes with different cutting intervals at Chongming Dongtan along China’s coasts

Yang, Sen; Zhang, Youzheng; Wu, Wei; Feng, Xinxin; Niu, Dongliang; Ma, Zhijun

doi:10.1016/j.gecco.2021.e01499

Cited by 3 publications

(1 citation statement)

References 33 publications

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“…The larger wetlands and shallower waters tend to be more biodiverse (Giosa et al 2018;Zhang et al 2016). Given that bird communities in reed marshes also differ signi cantly between seasons and harvest intervals (Yang et al 2021), retaining surface water during the plant growing season and increasing the number of perennial plant species to improve wetland complexity can increase biodiversity in wetlands (Bolduc and Afton 2004;Bradshaw et al 2020;Wang et al 2019).…”

Section: Spatial and Temporal Distribution Of Waterbirdsmentioning

confidence: 99%

Diversity of waterbirds and their spatial and temporal distribution in different habitat types of Bohai Sea coastal wetlands (Shandong section)

He,

Su,

Xin

et al. 2023

Preprint

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Context The coastal wetlands of the Bohai Sea are an important stopover site for migratory birds along the East Asia-Australasian flyway. Changes in land use and landscape structure of the coastal zone affect waterbird diversity and ecological conservation. Objectives We studied the community diversity and functional diversity of waterbirds in different habitats and seasons along the entire Shandong section of the Bohai Sea, explored the relationship between waterbird abundance and habitat area, and determined the relationship between bird functional eigenvalues and habitat types. Methods From June 2019 to April 2020, the Shandong section of the Bohai Sea was divided into 10 km × 10 km grids; a total of 87 grids were investigated, and four field surveys of waterbird communities were conducted using line transects and sampling points. We calculated the community and functional diversity of waterbirds in different habitats and seasons and analyzed the relationships of waterbird abundances with habitat area, functional traits, and habitat types using canonical correspondence analysis. Results The community diversity and functional diversity of waterbirds were highest in marsh wetlands, and waterbird richness and abundance were higher in natural wetlands than in artificial wetlands. There were significant differences in the diversity index of waterbirds among habitats and seasons. Habitat area was an extrinsic driver of the spatial distribution of different waterbird guilds, and foraging habits and feeding preferences were key intrinsic drivers. Conclusions Protecting waterbirds in this region requires prioritizing the protection of natural wetlands, reducing their exploitation, decreasing habitat fragmentation, and enhancing habitat connectivity.

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Section: Spatial and Temporal Distribution Of Waterbirdsmentioning

confidence: 99%

Diversity of waterbirds and their spatial and temporal distribution in different habitat types of Bohai Sea coastal wetlands (Shandong section)

He,

Su,

Xin

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

Study on spatio-temporal evolution of habitat quality based on land-use change in Chongming Dongtan, China

Dong

Gao

et al. 2022

Environ Earth Sci

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：Chongming Dongtan is an important habitat for international migratory birds. It is of great significance to study its land use and habitat quality change for rare waterfowl protection and ecological environment restoration. Based on the land use data in 2002, 2012 and 2020, this paper analyzes the relationship between land use change and habitat quality evolution in Chongming Dongtan in recent 18 years by using InVEST model, land use dynamic degree and land use degree index. The results show that the main types of land use in the study area are water area and cultivated land, followed by woodland, reed beach, grass beach, bare beach and construction land. Among them, bare beach and construction land have changed dramatically, the former continuing to decrease while the latter continuing to increase. And the increasing speed began to slow down after 2012, and the increasing part was mainly from the surrounding cultivated land. Secondly, in terms of time change, the degradation of habitat quality in Chongming Dongtan has been gradually improved from aggravating trend in the past 18 years. In terms of spatial distribution, the habitat degradation degree of Chongming Dongtan is higher in the east and lower in the west, spreading from the center to the surrounding. Based on this, the change of land use and the interference of human activities are the important reasons for the change of ecological environment quality.

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Invasive Water Hyacinth Limits Globally Threatened Waterbird Abundance and Diversity at Lake Cluster of Pokhara Valley, Nepal

et al. 2021

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Invasive species alter ecosystem structure and functioning, including impacts on native species, habitat alteration, and nutrient cycling. Among the 27 invasive plant species in Nepal, water hyacinth (Eichhornia crassipes) distribution is rapidly increasing in Lake Cluster of Pokhara Valley (LCPV) in the last several decades. We studied the effects of water hyacinth on threatened waterbird abundance, diversity, and physico-chemical parameters of water in the LCPV. We found areas with water hyacinth present (HP) had reduced threatened water bird abundance relative to areas where water hyacinth was absent (HA; p = 0.023). The occurrence of birds according to feeding guilds also varied between water hyacinth presence and absence habitats. Piscivorous birds were more abundant in HA areas than HP areas whereas insectivorous and omnivorous birds had greater abundance in HP areas than in HA areas. Threatened waterbird abundance and richness were greater in areas with greater water depth and overall bird abundance but declined in HP areas. Degraded water quality was also identified in HP areas. Our findings can be used as a baseline by lake managers and policy makers to develop strategies to remove or manage water hyacinth in LCPV to improve waterbird conservation.

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Birds and their habitat conditions in reed marshes with different cutting intervals at Chongming Dongtan along China’s coasts

Cited by 3 publications

References 33 publications

Diversity of waterbirds and their spatial and temporal distribution in different habitat types of Bohai Sea coastal wetlands (Shandong section)

Diversity of waterbirds and their spatial and temporal distribution in different habitat types of Bohai Sea coastal wetlands (Shandong section)

Study on spatio-temporal evolution of habitat quality based on land-use change in Chongming Dongtan, China

Invasive Water Hyacinth Limits Globally Threatened Waterbird Abundance and Diversity at Lake Cluster of Pokhara Valley, Nepal

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