Landscape context and wetland attributes influence wintering waterbirds in important bird and biodiversity areas: implications for conservation and management

Landscape Ecology, Год журнала: 2024, Номер 39(8)

Опубликована: Авг. 8, 2024

Abstract Context The intensification and expansion of human activities have caused profound changes in global wetlands their associated aquatic bird communities. Understanding the mechanisms that drive spatial assemblages wetland birds is important for development effective conservation management strategies. Objectives overall objective was to evaluate influence features such as size distance nearest coastline, landscape composition, configuration, function shaping waterbird richness abundance 43 Tunisian Important Bird Biodiversity Areas (IBAs). Methods Systematic surveys on species at each IBA were carried out between December January 2020/2021 2021/2022. Satellite remote sensing indices used map characterize vegetation condition surrounding them. Landscape metrics describe habitat configuration around wetlands. Results Our results show significant effects waterbirds (i.e., shorebirds, waterfowl, wading birds, open-water birds). We found surface area coast factors influencing waterbirds. also indicate diversity an predictor abundance, there a interaction explaining Conclusions This study provides evidence are robustly dependent wetland. Furthermore, local characteristics (wetland coastline), composition (forest urban area), (spatial heterogeneity), (maximum minimum NDVI), significantly affect wintering highlights importance large connected conserving various communities IBAs recommendations sustainable management.

Язык: Английский

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Relationships Between Muskrat Density and Avian and Anuran Richness in Great Lakes Coastal Wetlands

Wetlands, Год журнала: 2024, Номер 44(4)

Опубликована: Март 8, 2024

Язык: Английский

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Assessment of Waterbird Habitat Importance and Identification of Conservation Gaps in Anhui Province

Animals, Год журнала: 2024, Номер 14(7), С. 1004 - 1004

Опубликована: Март 25, 2024

Wetlands are among the most important habitats of highly wetland-dependent waterbirds but subject to ongoing habitat loss and degradation owing intensified anthropogenic activities. The scarcity human natural resources makes effective protection an concern. Here, we aimed investigate waterbird methods for Anhui Province, China, a critical stopover wintering area on East Asian-Australasian Flyway that features rich wetland significant degradation. We evaluated status importance 306 identified key environmental influences current gaps using entropy weights method generalized additive modeling. found 73 in which were classified into levels (descending from I V) according discontinuity method. Level II mainly located Yangtze River floodplain IV Huaihe floodplain. gap analysis showed 42 had gaps, accounting 57.53% total area. Waterbird was significantly correlated with elevation, normalized vegetation index, lake area, circumference not distance roads or population density. results this study provide scientific information conservation planning, is crucial maintaining ecosystem functions.

Язык: Английский

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Waterbird diversity and its influencing factors in various types of coastal wetlands in the Bohai Rim region

Global Ecology and Conservation, Год журнала: 2025, Номер 57, С. e03421 - e03421

Опубликована: Янв. 1, 2025

Язык: Английский

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Waterbird community response to wetland and climate changes in the Liaohe River Estuary wetlands, China

Journal of Environmental Management, Год журнала: 2025, Номер 374, С. 124165 - 124165

Опубликована: Янв. 18, 2025

Язык: Английский

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Assessment of the Impact of Extreme Hydrological Conditions on Migratory Bird Habitats of the Largest Freshwater Lake Wetlands in China Based on Multi-Source Remote Sensing Fusion Approach

Sustainability, Год журнала: 2025, Номер 17(5), С. 1900 - 1900

Опубликована: Фев. 24, 2025

Poyang Lake, the largest freshwater lake of China, serves as a crucial wintering site for migratory birds in East Asian–Australasian Flyway, where habitat quality is essential maintaining diverse bird populations. Recently, frequent alternation extreme wet years, e.g., 2020, and dry 2022, have inflicted considerable perturbation on local wetland ecology, severely impacting avian habitats. This study employed spatiotemporal fusion method (ESTARFM) to obtain continuous imagery Lake National Nature Reserve during seasons from 2020 2022. Habitat areas were identified based classification water depth constraints. The results indicate that both conditions exacerbated fragmentation shallow habitats showed minor short-term fluctuations response levels but more significantly affected by long-term hydrological trends. These exhibited interannual variability across different affecting their proportion within overall distribution area. demonstrates ability ESTARFM reveal dynamic changes responses conditions, highlighting critical role analysis. outcomes this improve understanding impact habitats, which may help expand knowledge about protection other floodplain wetlands around world.

Язык: Английский

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How Do Waterbird Communities Respond to Multi-Scale Environmental Variables in the Satellite Wetlands Surrounding a Ramsar Site, Shengjin Lake in China?

Diversity, Год журнала: 2025, Номер 17(3), С. 176 - 176

Опубликована: Фев. 28, 2025

The global degradation and loss of natural wetlands are increasingly threatening wetland-dependent taxa, particularly waterbirds, which highly vulnerable to environmental changes. In response these threats, an increasing number waterbirds relocating surrounding satellite in search compensatory habitats. However, how utilize respond varying variables remain poorly understood. the winter 2022–2023 summer 2023, we conducted surveys on waterbird assemblages 49 different types (reservoirs, aquaculture ponds, paddy fields ponds) Shengjin Lake, a Ramsar site, analyzed relationship between community metrics factors. Large numbers were recorded during both winter, including several threatened nationally protected species. Species richness individuals varied significantly across wetland types, with ponds supporting highest species individuals. These two showed positive correlations areas landscape connectivity seasons. was also positively correlated habitat diversity summer. negatively distance human settlements, but pattern contrast that winter. Shannon–Wiener index displayed similar among did not We detected no effects factors index. composition differed markedly seasons, especially reservoirs ponds. To safeguard communities middle lower reaches Yangtze River, recommend integrating into regional network reducing disturbances, months.

Язык: Английский

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Coupled Hydrodynamic and Habitat Suitability Models for Reach‐Scale Restoration of Wintering Waterbird Habitats in Rivers: A Case Study on Scaly‐Sided Merganser

Aquatic Conservation Marine and Freshwater Ecosystems, Год журнала: 2025, Номер 35(3)

Опубликована: Март 1, 2025

ABSTRACT Rivers are pivotal ecosystems for migratory waterbirds, with the habitat preferences of piscivorous species heavily influenced by hydrodynamic factors such as water depth and flow velocity. These variables directly impact food availability foraging behaviours waterbirds. While integration suitability models has been effective in assessing river conditions guiding restoration efforts, research specific to instream‐dependent waterbirds at reach scale is scarce. This concentrates on scaly‐sided merganser ( Mergus squamatus ), an endangered IUCN Red List, identifying crucial factors—water depth, velocity human disturbance distance—based their significance shaping wintering choices this bird. Through a coupled model deployed segment Xitiaoxi River southeastern China, study seeks create tailored merganser, assess distribution landscape features suitable instream habitats suggest management tactics. Results show that despite dry season revealing areas (31.1%), (16.8%) (80.5%) respectively, combined only occupies 5.1%, predominantly shallow regions like riffles sandbanks. The proposes strategies enhance presenting pragmatic approach reach‐scale restoration, proactive conservation efforts beneficial findings relevant not southern rivers China but also other countries support similar waterbird habitats.

Язык: Английский

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Macquarie Marshes, Australia: Aquatic ecosystem function and microbial biodiversity

Elsevier eBooks, Год журнала: 2025, Номер unknown, С. 183 - 199

Опубликована: Янв. 1, 2025

Язык: Английский

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Scale-dependent landscape variables and linear infrastructures influence smooth newt (Lissotriton vulgaris) abundance in wetlands of a heavily urbanized lake

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Апрель 22, 2025

Abstract The degradation of freshwater ecosystems due to land use changes is one the major driver global biodiversity loss and amphibian declines with these impacts varying across different spatial scales. Our study aimed assess how natural human-modified affects smooth newt ( Lissotriton vulgaris ) abundance in surrounding waterbodies Lake Balaton, a highly urbanized area. We conducted aquatic trap surveys at 32 wetland sites during breeding season quantified cover within 250, 500, 1000-m radius buffer zones. hypothesized that urban use, cropland, proximity roads railways would negatively correlate abundance, while wetlands areas (marshes, swamps, periodically flooded grasslands) terrestrial habitats (grasslands, forests woodlands) positively correlate, effects N-mixture models were used analyse survey data, estimating examining relationships covariates. Results revealed 500-m zone increased probably supporting metapopulation connectivity. In contrast, cropland 250 m affected abundance. Conservation efforts should prioritize providing newts adequate reducing disturbances from croplands, roads, railways.

Язык: Английский

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