Waterbird Monitoring in the Antsalova Region, Western Madagascar

Razafimanjato, Gilbert; Sam, T. S.; Thorstrom, Russell

doi:10.1675/1524-4695(2007)030[0441:wmitar]2.0.co;2

Cited by 10 publications

(5 citation statements)

References 6 publications

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“…Individual answers, however, might be influenced by the anxiety of the person interviewed of potential punishment for conducting illegal activity in the PA. As this species is very difficult to confuse with any other species (at least when not in flight), monitoring by community members might be a good solution to conduct surveys more regularly in the future. Overall, our numbers of waterbirds (Tsangajoly >7500; Andrahangy > 2500; Kivalo ~500) is comparable to survey estimates of other IBAs in the Antsalova region further north, specifically the Bemamba and Manambolomaty wetland complex, where waterbird numbers range 266-4,105 across survey sites (see Razafimanjato et al 2007; Table 1).…”

Section: No Of Mapped Mangrove Sitessupporting

confidence: 69%

A rapid assessment of waterbirds and the mangrove status in the Menabe Antimena Protected Area, Madagascar

Zöckler¹,

Razanamahenina

Markolf

2021

J. Threat. Taxa

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Mangroves are of great ecological importance that provide multiple ecosystem services, shelter, and habitat for many threatened waterbird species. The mangroves of the Menabe Antimena Protected Area (MANAP) in western Madagascar are among the most extensive remaining on the island. The remaining dryland forests of the MANAP have been subjected to immense deforestation in recent years. Although remote sensing studies indicate that the mangrove forest loss is considerably lower than the dryland forest loss, little is known about the mangroves’ degradation status. Furthermore, detailed information on bird diversity and numbers is scattered, and previous surveys focused on northern parts of the MANAP, recently designated as the Wetlands of the Tsiribihina RAMSAR site. This study aims to assess bird diversity and abundance, as well as the status of mangroves in the MANAP. We conducted a rapid survey using direct observations at three sites along the coastal regions of the MANAP from 24 Sep–2 Oct 2019. We recorded 71 species of birds in the mangroves and coastal wetlands. High numbers of individuals were counted for several species. Numbers of the Madagascar Plover Charadrius thoracicus and the Madagascar Teal Anas bernieri fulfill criteria for important bird areas at single survey sites and the site is likely to be of importance for Madagascar Sacred Ibis Threskiornis bernieri; these three species are all globally threatened. Mangrove degradation is still limited, but numerous threats to mangroves are present. Our results highlight the importance of the mangroves of the MANAP for several endemic bird species in Madagascar. We provide recommendations for conservation management and future research.

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Section: No Of Mapped Mangrove Sitessupporting

confidence: 69%

A rapid assessment of waterbirds and the mangrove status in the Menabe Antimena Protected Area, Madagascar

Zöckler¹,

Razanamahenina

Markolf

2021

J. Threat. Taxa

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“…Farming and paddy seasons are essential aspects of the abundance and distribution of birds in the area (Kelly et al, 2008;Ibáñez et al, 2010;Wood et al, 2010). Studies have suggested that paddy fields are suitable for water birds and land birds as a place to forage, breed, and shelter (Zou et al, 2006;Razafimanjato et al, 2007;Takahashi and Ohkawara, 2007;King et al, 2010;Wood et al, 2010). Flood plains of Punjab along river Beas have also witnessed the anthropogenic intervention in the landscapes of the river led to depleted natural ecosystems and land use patterns.…”

Section: Effect Of Agriculture On Avian Diversity Of River Systemmentioning

confidence: 99%

Avian diversity at Beas River conservation reserve under urbanization and intensive agriculture in Punjab, India

Kumar¹,

Kler²

2021

Biological Diversity: Current Status and Conservation Policies

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Punjab is an agrarian state nurtured by the river Beas and Satluj with a maximum gross cropped area of 98.5% in India. River Beas had been designated as "Conservation Reserve" in 2017 and "Ramsar site" in 2019. Agriculture affects 87% of the globally threatened bird species. Birds are the most noticeable and specialized species in the river habitats; hence the abundance and distribution of birds are often readily interpreted in the context of river health and vice versa. The chapter has been designed to understand the impact of agriculture, urbanization, tree diversity and wetlands along the river on avian diversity based on literature available for the state of Punjab. The chapter aims to generate sustainable management strategies for the conservation of avian diversity at Beas river conservation reserve without hampering the development of the region. The present work reveals that agriculture intensification and urbanization are major concern for avian diversity conservation as both these factors negatively impacts the habitat specialist bird species and favors generalist and insectivore species. The study concludes that significant number of species recorded have specific niche area requirements that are completed by the river's sub-habitats including feeding, foraging, roosting and nesting therefore the whole area needs protection as a single unit.

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“…Over the years, several studies have been conducted on the wetlands in Antananarivo and its surroundings (Milon 1949, Malzy 1967, Wilmé and Jacquet 2002, Razafimanjato et al 2007, Raherilalao and Goodman 2011, but few studies have focused on the uses of these wetlands by invasive alien bird species such as the Common mynas. The objective of this study is to assess the current situation of this species and to estimate its impact or influence on the indigenous waterfowl.…”

Section: Introductionmentioning

confidence: 99%

Analysis of wetland uses by Common mynas (Acridotheres tristis) in the urban environment of Antananarivo, Madagascar

Randriamiharisoa

Rakotomanana

2022

MCD

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The importance of wetlands as habitat and breeding grounds for waterfowls is recognized and has been extensively studied, but their role in regulating and maintaining ecosystems is less well documented. The use of wetlands by invasive species such as Common myna (Acridotheres tristis), considered as one of the 100 worst invasive species in the world, is largely unknown. Therefore, the Common mynas could have an influence on the occupation of native water bird species. The objectives of this study were to assess Common myna's (1) population size, (2) spatial occupation and (3) characteristics of foraging and roosting sites. Three urban wetlands in Antananarivo were studied: the Tsarasaotra Park, a private site classified as a Ramsar site, the Tsimbazaza Zoological and Botanical Park in the city center, and an area near the Ikopa River, close to the SOCOBIS biscuit factory. In total, 6196 Common mynas were counted with an estimated 7.9 individuals per hectare around the roosting sites. Vigilance and foraging behaviors were less observed when individuals were at a higher stratum, with communication and resting being the most observed behaviors at this level. Only 5.6% of wetlands are used during the day as foraging areas and 1.4% as roosting sites at night, where Common mynas cohabitate with herons and egrets. Finally, the environmental variables collected revealed that Common mynas favor wetlands with tall, wide trees, located far from human disturbance. L’importance des zones humides en tant qu’habitat et site de reproduction pour les oiseaux d’eau est reconnue et a été abondamment étudiée. Cependant, le rôle des oiseaux d’eau dans la régulation et le maintien d’écosystème est moins bien documenté. Particulièrement l’utilisation des zones humides par des espèces envahissantes telles que le Martin triste (Acridotheres tristis), une des 100 pires espèces envahissantes dans le monde, reste peu étudiée. Le Martin triste pourrait avoir une influence et un impact par son occupation et son comportement envahissant sur les oiseaux d’eau autochtones. Afin d'évaluer la taille de la population du Martin triste, son utilisation et occupation spatiale, ainsi que les caractéristiques écologiques de ses zones d’alimentation et de dortoir, trois zones humides du milieu urbain d’Antananarivo ont été étudiées. Il s’agit du Parc de Tsarasaotra, un site privé classé RAMSAR, le Parc Zoologique et Botanique de Tsimbazaza dans le centre-ville, et une zone située à proximité de la rivière Ikopa, près de l’usine de fabrication de biscuits SOCOBIS. Un nombre de 6196 observations de Martins tristes ont été réa- lisées et l'abondance des populations a été estimée à 7.9 individus par hectare autour des dortoirs. Les observations ont aussi révélé que le Martin triste réduit certains comportements tels que la vigilance et l’alimentation lorsqu’il est à une hauteur plus élevée et privilégie alors des comportements de communication et de repos. Il utilise 5,6% des zones humides pendant la journée en tant que site de nourrissage et 1,4% pendant la nuit comme dortoir, où il cohabite avec des hérons et des aigrettes. Les varia-bles environnementales récoltées sur les sites ont révélé que le Martin triste privilégie les zones humides situées loin des perturbations humaines et présentant de grands arbres à diamètre important.

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Waterbird Monitoring in the Antsalova Region, Western Madagascar

Cited by 10 publications

References 6 publications

A rapid assessment of waterbirds and the mangrove status in the Menabe Antimena Protected Area, Madagascar

A rapid assessment of waterbirds and the mangrove status in the Menabe Antimena Protected Area, Madagascar

Avian diversity at Beas River conservation reserve under urbanization and intensive agriculture in Punjab, India

Analysis of wetland uses by Common mynas (Acridotheres tristis) in the urban environment of Antananarivo, Madagascar

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