Habitat suitability change of water birds in Shengjinhu National Nature Reserve, Anhui Province

Li, Yang; Dong, Bin; Wang, Qing; Sheng, Shuwei; Wang, Han; Jun, Zhao; Mingwei, Cheng; Shaowen, Yang

doi:10.18307/2015.0606

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…When the dry season starts in autumn, as a result of lake recession, wetland plants such as eel grass, sedge, and buttercups are exposed in the lake riparian and shallow zones of the upper lake. This attract a large number of geese and hooded cranes to these areas in the winter season [22]. Post-December, due to the insufficient supply of food resources for the excessive number of waterbirds, some hooded cranes and bean geese colonies leave the meadows and mudflats for the surrounding paddy fields in search of food.…”

Section: Study Areamentioning

confidence: 99%

Do Geese Facilitate or Compete with Wintering Hooded Cranes (Grus monacha) for Forage Resources?

Zhu

Zhou

et al. 2020

Diversity

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Foraging is the key behavior of waterbirds, which profoundly affects the survival of their population, and it is affected by interspecific interaction. At Shengjin Lake in China, owing to the reduced availability of suitable habitats for a large population of migratory waterbirds (especially wild geese) over winter, mixed species foraging inevitably occurs. This study aimed to investigate whether mixed-species foraging affects the foraging of hooded cranes (Grus monacha). Fields surveys were carried out at Shengjin Lake from November 2018 to March 2019. Mixed-species foraging was surveyed between the flocks of hooded cranes and three species of geese, greater white-fronted geese (Anser albifrons), lesser white-fronted geese (Anser erythropus) and bean geese (Anser fabalis). Instantaneous scanning and focal animal methods were used to collect behavioral samples of hooded cranes. The quadrat method was used to survey the food density in three habitats: meadows, mudflats, and paddy fields. The results showed that the foraging success rate of hooded cranes was not significantly correlated with food density and the relative flock size in the mixed-species foraging flock in meadows, but a significant negative correlation with the relative flock size in mudflats. However in paddy fields it was a significant positive correlation with the relative flock size. Foraging efforts of hooded cranes were negatively correlated with food density and positively correlated with the relative flock size in meadows. In mudflats, foraging efforts of hooded cranes had a significant positively correlation with the relative flock size, however, there was a significant negative correlation with the relative flock size in paddy fields. To sum up, larger numbers of geese mixed with hooded cranes has a favorable effect on the foraging of hooded cranes in meadows and mudflats, however, the reverse was observed in the paddy fields.

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Section: Study Areamentioning

confidence: 99%

Do Geese Facilitate or Compete with Wintering Hooded Cranes (Grus monacha) for Forage Resources?

Zhu

Zhou

et al. 2020

Diversity

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“…Habitat quality refers to the ability of the ecosystem to provide suitable individuals and populations with sustainable survival and reproduction within a certain space and time range, and is an important ecosystem service. Stable habitat quality is an important basis for maintaining biodiversity of the ecosystem, which reflect regional biodiversity to a certain extent [1][2] . Studies have shown that land use change is the main driving force of habitat quality change.…”

Section: Introductionmentioning

confidence: 99%

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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“…Other scholars have analysed the eco‐hydrological structure of wetlands through remote sensing spatio‐temporal fusion technology (Zhang & Wang, 2020). Based on a multi‐temporal remote sensing image inversion, the influence of water level change on spatial differentiation of suspended solids in river and lake system was discussed (Wang et al, 2020), using advanced remote sensing technology to study the relationship between ecological environment and waterbird reproduction (Zhang, Dong, et al, 2019; Zhou et al, 2019), migration and habitat (Hu et al, 2019), establishing waterbird habitat suitability model to monitor and evaluate its habitat quality (Shealer & Alexander, 2013; Yang et al, 2015). Artificial intelligence remote sensing technology provides valuable information for ecological environment research.…”

Section: Introductionmentioning

confidence: 99%

Effects of extreme flooding on aquatic vegetation cover in Shengjin Lake, China

Guo

Zhou

Chen

et al. 2022

Hydrological Processes

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Aquatic plants are the main primary producers and an important part of the aquatic ecosystem. Seasonal flooding broke out in July 2020 in the middle and lower reaches of the Yangtze River, resulting in continued high water levels in lakes connected to the Yangtze River. To study the impact of extreme flooding on aquatic vegetation cover, we utilized two methods (surveying and remote sensing image data) to determine the changes in the aquatic vegetation cover of Shengjin Lake, one of the lakes connected to the Yangtze River, during the wet season from 2018 to 2020. The results showed that the dominant aquatic plant species before the flood in July 2020 were the emergent plant Zizania caduciflora, the floating plant Trapa incisa, the submerged plant Ceratophyllum demersum and Vallisineria natans. The area covered by aquatic vegetation in 2018–2019 showed a slight upward trend, increasing from 24.94 to 25.94 km2. In April 2020, the aquatic vegetation cover was 25.53 km2, and after the flooding in July 2020, the aquatic vegetation cover decreased sharply to 1.36 km2, which was mainly composed of emergent plant Z. caduciflora in the nearshore. No recovery of the dominant aquatic plant species, the floating plant T. incisa and other submerged plants, was seen during the monitoring of water level decline from September to December 2020. Winter wetland plants were not significantly affected by flooding. The results of the study provide a theoretical basis for the maintenance mechanism of aquatic vegetation and lake management in Shengjin Lake.

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Habitat suitability change of water birds in Shengjinhu National Nature Reserve, Anhui Province

Cited by 8 publications

References 5 publications

Do Geese Facilitate or Compete with Wintering Hooded Cranes (Grus monacha) for Forage Resources?

Do Geese Facilitate or Compete with Wintering Hooded Cranes (Grus monacha) for Forage Resources?

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

Effects of extreme flooding on aquatic vegetation cover in Shengjin Lake, China

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